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gecko-dev/widget/windows/nsWindow.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sts=2 sw=2 et cin: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Dean Tessman <dean_tessman@hotmail.com>
* Ere Maijala <emaijala@kolumbus.fi>
* Mark Hammond <markh@activestate.com>
* Michael Lowe <michael.lowe@bigfoot.com>
* Peter Bajusz <hyp-x@inf.bme.hu>
* Pierre Phaneuf <pp@ludusdesign.com>
* Robert O'Callahan <roc+moz@cs.cmu.edu>
* Roy Yokoyama <yokoyama@netscape.com>
* Makoto Kato <m_kato@ga2.so-net.ne.jp>
* Masayuki Nakano <masayuki@d-toybox.com>
* Dainis Jonitis <Dainis_Jonitis@swh-t.lv>
* Christian Biesinger <cbiesinger@web.de>
* Mats Palmgren <matspal@gmail.com>
* Ningjie Chen <chenn@email.uc.edu>
* Jim Mathies <jmathies@mozilla.com>
* Kyle Huey <me@kylehuey.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* nsWindow - Native window management and event handling.
*
* nsWindow is organized into a set of major blocks and
* block subsections. The layout is as follows:
*
* Includes
* Variables
* nsIWidget impl.
* nsIWidget methods and utilities
* nsSwitchToUIThread impl.
* nsSwitchToUIThread methods and utilities
* Moz events
* Event initialization
* Event dispatching
* Native events
* Wndproc(s)
* Event processing
* OnEvent event handlers
* IME management and accessibility
* Transparency
* Popup hook handling
* Misc. utilities
* Child window impl.
*
* Search for "BLOCK:" to find major blocks.
* Search for "SECTION:" to find specific sections.
*
* Blocks should be split out into separate files if they
* become unmanageable.
*
* Related source:
*
* nsWindowDefs.h - Definitions, macros, structs, enums
* and general setup.
* nsWindowDbg.h/.cpp - Debug related code and directives.
* nsWindowGfx.h/.cpp - Graphics and painting.
*
*/
/**************************************************************
**************************************************************
**
** BLOCK: Includes
**
** Include headers.
**
**************************************************************
**************************************************************/
#include "mozilla/ipc/RPCChannel.h"
/* This must occur *after* ipc/RPCChannel.h to avoid typedefs conflicts. */
#include "mozilla/Util.h"
#include "nsWindow.h"
#include <windows.h>
#include <process.h>
#include <commctrl.h>
#include <unknwn.h>
#include <psapi.h>
#include "prlog.h"
#include "prtime.h"
#include "prprf.h"
#include "prmem.h"
#include "mozilla/WidgetTraceEvent.h"
#include "nsIAppShell.h"
#include "nsISupportsPrimitives.h"
#include "nsIDOMMouseEvent.h"
#include "nsITheme.h"
#include "nsIObserverService.h"
#include "nsIScreenManager.h"
#include "imgIContainer.h"
#include "nsIFile.h"
#include "nsIRollupListener.h"
#include "nsIServiceManager.h"
#include "nsIClipboard.h"
#include "nsIMM32Handler.h"
#include "WinMouseScrollHandler.h"
#include "nsILocalFile.h"
#include "nsFontMetrics.h"
#include "nsIFontEnumerator.h"
#include "nsGUIEvent.h"
#include "nsFont.h"
#include "nsRect.h"
#include "nsThreadUtils.h"
#include "nsNativeCharsetUtils.h"
#include "nsGkAtoms.h"
#include "nsUnicharUtils.h"
#include "nsCRT.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsXPIDLString.h"
#include "nsWidgetsCID.h"
#include "nsTHashtable.h"
#include "nsHashKeys.h"
#include "nsString.h"
#include "mozilla/Services.h"
#include "nsNativeThemeWin.h"
#include "nsWindowsDllInterceptor.h"
#include "nsIWindowMediator.h"
#include "nsIServiceManager.h"
#include "nsWindowGfx.h"
#include "gfxWindowsPlatform.h"
#include "Layers.h"
#include "nsPrintfCString.h"
#include "mozilla/Preferences.h"
#include "nsISound.h"
#include "WinTaskbar.h"
#include "WinUtils.h"
#ifdef MOZ_ENABLE_D3D9_LAYER
#include "LayerManagerD3D9.h"
#endif
#ifdef MOZ_ENABLE_D3D10_LAYER
#include "LayerManagerD3D10.h"
#endif
#include "LayerManagerOGL.h"
#include "nsIGfxInfo.h"
#include "BasicLayers.h"
#include "nsUXThemeConstants.h"
#include "KeyboardLayout.h"
#include "nsNativeDragTarget.h"
#include <mmsystem.h> // needed for WIN32_LEAN_AND_MEAN
#include <zmouse.h>
#include <richedit.h>
#if defined(ACCESSIBILITY)
#include "oleidl.h"
#include <winuser.h>
#include "nsIAccessibleDocument.h"
#if !defined(WINABLEAPI)
#include <winable.h>
#endif // !defined(WINABLEAPI)
#endif // defined(ACCESSIBILITY)
#include "nsIWinTaskbar.h"
#define NS_TASKBAR_CONTRACTID "@mozilla.org/windows-taskbar;1"
#if defined(NS_ENABLE_TSF)
#include "nsTextStore.h"
#endif // defined(NS_ENABLE_TSF)
// Windowless plugin support
#include "npapi.h"
#include "nsWindowDefs.h"
#include "mozilla/FunctionTimer.h"
#include "nsCrashOnException.h"
#include "nsIXULRuntime.h"
#include "nsIContent.h"
using namespace mozilla::widget;
using namespace mozilla::layers;
using namespace mozilla;
/**************************************************************
**************************************************************
**
** BLOCK: Variables
**
** nsWindow Class static initializations and global variables.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow statics
*
**************************************************************/
bool nsWindow::sDropShadowEnabled = true;
PRUint32 nsWindow::sInstanceCount = 0;
bool nsWindow::sSwitchKeyboardLayout = false;
BOOL nsWindow::sIsOleInitialized = FALSE;
HCURSOR nsWindow::sHCursor = NULL;
imgIContainer* nsWindow::sCursorImgContainer = nsnull;
nsWindow* nsWindow::sCurrentWindow = nsnull;
bool nsWindow::sJustGotDeactivate = false;
bool nsWindow::sJustGotActivate = false;
bool nsWindow::sIsInMouseCapture = false;
// imported in nsWidgetFactory.cpp
TriStateBool nsWindow::sCanQuit = TRI_UNKNOWN;
// Hook Data Memebers for Dropdowns. sProcessHook Tells the
// hook methods whether they should be processing the hook
// messages.
HHOOK nsWindow::sMsgFilterHook = NULL;
HHOOK nsWindow::sCallProcHook = NULL;
HHOOK nsWindow::sCallMouseHook = NULL;
bool nsWindow::sProcessHook = false;
UINT nsWindow::sRollupMsgId = 0;
HWND nsWindow::sRollupMsgWnd = NULL;
UINT nsWindow::sHookTimerId = 0;
// Rollup Listener
nsIRollupListener* nsWindow::sRollupListener = nsnull;
nsIWidget* nsWindow::sRollupWidget = nsnull;
bool nsWindow::sRollupConsumeEvent = false;
// Mouse Clicks - static variable definitions for figuring
// out 1 - 3 Clicks.
POINT nsWindow::sLastMousePoint = {0};
POINT nsWindow::sLastMouseMovePoint = {0};
LONG nsWindow::sLastMouseDownTime = 0L;
LONG nsWindow::sLastClickCount = 0L;
BYTE nsWindow::sLastMouseButton = 0;
// Trim heap on minimize. (initialized, but still true.)
int nsWindow::sTrimOnMinimize = 2;
// Default value for Trackpoint hack (used when the pref is set to -1).
bool nsWindow::sDefaultTrackPointHack = false;
// Default value for general window class (used when the pref is the empty string).
const char* nsWindow::sDefaultMainWindowClass = kClassNameGeneral;
// Whether to enable the Elantech swipe gesture hack.
bool nsWindow::sUseElantechSwipeHack = false;
// Whether to enable the Elantech pinch-to-zoom gesture hack.
bool nsWindow::sUseElantechPinchHack = false;
// If we're using D3D9, this will not be allowed during initial 5 seconds.
bool nsWindow::sAllowD3D9 = false;
TriStateBool nsWindow::sHasBogusPopupsDropShadowOnMultiMonitor = TRI_UNKNOWN;
// Used in OOPP plugin focus processing.
const PRUnichar* kOOPPPluginFocusEventId = L"OOPP Plugin Focus Widget Event";
PRUint32 nsWindow::sOOPPPluginFocusEvent =
RegisterWindowMessageW(kOOPPPluginFocusEventId);
MSG nsWindow::sRedirectedKeyDown;
bool nsWindow::sEnablePixelScrolling = true;
bool nsWindow::sNeedsToInitMouseWheelSettings = true;
ULONG nsWindow::sMouseWheelScrollLines = 0;
ULONG nsWindow::sMouseWheelScrollChars = 0;
HWND nsWindow::sLastMouseWheelWnd = NULL;
PRInt32 nsWindow::sRemainingDeltaForScroll = 0;
PRInt32 nsWindow::sRemainingDeltaForPixel = 0;
bool nsWindow::sLastMouseWheelDeltaIsPositive = false;
bool nsWindow::sLastMouseWheelOrientationIsVertical = false;
bool nsWindow::sLastMouseWheelUnitIsPage = false;
PRUint32 nsWindow::sLastMouseWheelTime = 0;
/**************************************************************
*
* SECTION: globals variables
*
**************************************************************/
static const char *sScreenManagerContractID = "@mozilla.org/gfx/screenmanager;1";
#ifdef PR_LOGGING
PRLogModuleInfo* gWindowsLog = nsnull;
#endif
// Kbd layout. Used throughout character processing.
static KeyboardLayout gKbdLayout;
// Global user preference for disabling native theme. Used
// in NativeWindowTheme.
bool gDisableNativeTheme = false;
// Global used in Show window enumerations.
static bool gWindowsVisible = false;
// True if we have sent a notification that we are suspending/sleeping.
static bool gIsSleepMode = false;
static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
// General purpose user32.dll hook object
static WindowsDllInterceptor sUser32Intercept;
// 2 pixel offset for eTransparencyBorderlessGlass which equals the size of
// the default window border Windows paints. Glass will be extended inward
// this distance to remove the border.
static const PRInt32 kGlassMarginAdjustment = 2;
// When the client area is extended out into the default window frame area,
// this is the minimum amount of space along the edge of resizable windows
// we will always display a resize cursor in, regardless of the underlying
// content.
static const PRInt32 kResizableBorderMinSize = 3;
// We should never really try to accelerate windows bigger than this. In some
// cases this might lead to no D3D9 acceleration where we could have had it
// but D3D9 does not reliably report when it supports bigger windows. 8192
// is as safe as we can get, we know at least D3D10 hardware always supports
// this, other hardware we expect to report correctly in D3D9.
#define MAX_ACCELERATED_DIMENSION 8192
/**************************************************************
**************************************************************
**
** BLOCK: nsIWidget impl.
**
** nsIWidget interface implementation, broken down into
** sections.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow construction and destruction
*
**************************************************************/
nsWindow::nsWindow() : nsBaseWidget()
{
#ifdef PR_LOGGING
if (!gWindowsLog) {
gWindowsLog = PR_NewLogModule("nsWindow");
}
#endif
mWnd = nsnull;
mPaintDC = nsnull;
mPrevWndProc = nsnull;
mNativeDragTarget = nsnull;
mInDtor = false;
mIsVisible = false;
mIsTopWidgetWindow = false;
mUnicodeWidget = true;
mDisplayPanFeedback = false;
mTouchWindow = false;
mCustomNonClient = false;
mHideChrome = false;
mFullscreenMode = false;
mMousePresent = false;
mDestroyCalled = false;
mPickerDisplayCount = 0;
mWindowType = eWindowType_child;
mBorderStyle = eBorderStyle_default;
mPopupType = ePopupTypeAny;
mOldSizeMode = nsSizeMode_Normal;
mLastPoint.x = 0;
mLastPoint.y = 0;
mLastSize.width = 0;
mLastSize.height = 0;
mOldStyle = 0;
mOldExStyle = 0;
mPainting = 0;
mLastKeyboardLayout = 0;
mAssumeWheelIsZoomUntil = 0;
mBlurSuppressLevel = 0;
mLastPaintEndTime = TimeStamp::Now();
#ifdef MOZ_XUL
mTransparentSurface = nsnull;
mMemoryDC = nsnull;
mTransparencyMode = eTransparencyOpaque;
memset(&mGlassMargins, 0, sizeof mGlassMargins);
#endif
mBackground = ::GetSysColor(COLOR_BTNFACE);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(mBackground));
mForeground = ::GetSysColor(COLOR_WINDOWTEXT);
mTaskbarPreview = nsnull;
mHasTaskbarIconBeenCreated = false;
// Global initialization
if (!sInstanceCount) {
// Global app registration id for Win7 and up. See
// WinTaskbar.cpp for details.
mozilla::widget::WinTaskbar::RegisterAppUserModelID();
gKbdLayout.LoadLayout(::GetKeyboardLayout(0));
// Init IME handler
nsIMM32Handler::Initialize();
#ifdef NS_ENABLE_TSF
nsTextStore::Initialize();
#endif
if (SUCCEEDED(::OleInitialize(NULL))) {
sIsOleInitialized = TRUE;
}
NS_ASSERTION(sIsOleInitialized, "***** OLE is not initialized!\n");
InitInputWorkaroundPrefDefaults();
MouseScrollHandler::Initialize();
// Init titlebar button info for custom frames.
nsUXThemeData::InitTitlebarInfo();
// Init theme data
nsUXThemeData::UpdateNativeThemeInfo();
ForgetRedirectedKeyDownMessage();
} // !sInstanceCount
mIdleService = nsnull;
sInstanceCount++;
}
nsWindow::~nsWindow()
{
mInDtor = true;
// If the widget was released without calling Destroy() then the native window still
// exists, and we need to destroy it. This will also result in a call to OnDestroy.
//
// XXX How could this happen???
if (NULL != mWnd)
Destroy();
sInstanceCount--;
// Global shutdown
if (sInstanceCount == 0) {
#ifdef NS_ENABLE_TSF
nsTextStore::Terminate();
#endif
NS_IF_RELEASE(sCursorImgContainer);
if (sIsOleInitialized) {
::OleFlushClipboard();
::OleUninitialize();
sIsOleInitialized = FALSE;
}
// delete any of the IME structures that we allocated
nsIMM32Handler::Terminate();
}
NS_IF_RELEASE(mNativeDragTarget);
}
NS_IMPL_ISUPPORTS_INHERITED0(nsWindow, nsBaseWidget)
/**************************************************************
*
* SECTION: nsIWidget::Create, nsIWidget::Destroy
*
* Creating and destroying windows for this widget.
*
**************************************************************/
// Allow Derived classes to modify the height that is passed
// when the window is created or resized.
PRInt32 nsWindow::GetHeight(PRInt32 aProposedHeight)
{
return aProposedHeight;
}
// Create the proper widget
nsresult
nsWindow::Create(nsIWidget *aParent,
nsNativeWidget aNativeParent,
const nsIntRect &aRect,
EVENT_CALLBACK aHandleEventFunction,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData)
{
nsWidgetInitData defaultInitData;
if (!aInitData)
aInitData = &defaultInitData;
mUnicodeWidget = aInitData->mUnicode;
nsIWidget *baseParent = aInitData->mWindowType == eWindowType_dialog ||
aInitData->mWindowType == eWindowType_toplevel ||
aInitData->mWindowType == eWindowType_invisible ?
nsnull : aParent;
mIsTopWidgetWindow = (nsnull == baseParent);
mBounds = aRect;
// Ensure that the toolkit is created.
nsToolkit::GetToolkit();
BaseCreate(baseParent, aRect, aHandleEventFunction, aContext, aInitData);
HWND parent;
if (aParent) { // has a nsIWidget parent
parent = aParent ? (HWND)aParent->GetNativeData(NS_NATIVE_WINDOW) : NULL;
mParent = aParent;
} else { // has a nsNative parent
parent = (HWND)aNativeParent;
mParent = aNativeParent ?
WinUtils::GetNSWindowPtr((HWND)aNativeParent) : nsnull;
}
mPopupType = aInitData->mPopupHint;
mIsRTL = aInitData->mRTL;
DWORD style = WindowStyle();
DWORD extendedStyle = WindowExStyle();
if (mWindowType == eWindowType_popup) {
if (!aParent)
parent = NULL;
if (aInitData->mIsDragPopup) {
// This flag makes the window transparent to mouse events
extendedStyle |= WS_EX_TRANSPARENT;
}
} else if (mWindowType == eWindowType_invisible) {
// Make sure CreateWindowEx succeeds at creating a toplevel window
style &= ~0x40000000; // WS_CHILDWINDOW
} else {
// See if the caller wants to explictly set clip children and clip siblings
if (aInitData->clipChildren) {
style |= WS_CLIPCHILDREN;
} else {
style &= ~WS_CLIPCHILDREN;
}
if (aInitData->clipSiblings) {
style |= WS_CLIPSIBLINGS;
}
}
nsAutoString className;
if (aInitData->mDropShadow) {
GetWindowPopupClass(className);
} else {
GetWindowClass(className);
}
// Plugins are created in the disabled state so that they can't
// steal focus away from our main window. This is especially
// important if the plugin has loaded in a background tab.
if(aInitData->mWindowType == eWindowType_plugin) {
style |= WS_DISABLED;
}
mWnd = ::CreateWindowExW(extendedStyle,
className.get(),
L"",
style,
aRect.x,
aRect.y,
aRect.width,
GetHeight(aRect.height),
parent,
NULL,
nsToolkit::mDllInstance,
NULL);
if (!mWnd) {
NS_WARNING("nsWindow CreateWindowEx failed.");
return NS_ERROR_FAILURE;
}
if (mIsRTL && nsUXThemeData::dwmSetWindowAttributePtr) {
DWORD dwAttribute = TRUE;
nsUXThemeData::dwmSetWindowAttributePtr(mWnd, DWMWA_NONCLIENT_RTL_LAYOUT, &dwAttribute, sizeof dwAttribute);
}
if (mWindowType != eWindowType_plugin &&
mWindowType != eWindowType_invisible &&
UseTrackPointHack()) {
// Ugly Thinkpad Driver Hack (Bugs 507222 and 594977)
//
// We create two zero-sized windows as descendants of the top-level window,
// like so:
//
// Top-level window (MozillaWindowClass)
// FAKETRACKPOINTSCROLLCONTAINER (MozillaWindowClass)
// FAKETRACKPOINTSCROLLABLE (MozillaWindowClass)
//
// We need to have the middle window, otherwise the Trackpoint driver
// will fail to deliver scroll messages. WM_MOUSEWHEEL messages are
// sent to the FAKETRACKPOINTSCROLLABLE, which then propagate up the
// window hierarchy until they are handled by nsWindow::WindowProc.
// WM_HSCROLL messages are also sent to the FAKETRACKPOINTSCROLLABLE,
// but these do not propagate automatically, so we have the window
// procedure pretend that they were dispatched to the top-level window
// instead.
//
// The FAKETRACKPOINTSCROLLABLE needs to have the specific window styles it
// is given below so that it catches the Trackpoint driver's heuristics.
HWND scrollContainerWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLCONTAINER",
WS_CHILD | WS_VISIBLE,
0, 0, 0, 0, mWnd, NULL, nsToolkit::mDllInstance, NULL);
HWND scrollableWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLABLE",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_TABSTOP | 0x30,
0, 0, 0, 0, scrollContainerWnd, NULL, nsToolkit::mDllInstance, NULL);
// Give the FAKETRACKPOINTSCROLLABLE window a specific ID so that
// WindowProcInternal can distinguish it from the top-level window
// easily.
::SetWindowLongPtrW(scrollableWnd, GWLP_ID, eFakeTrackPointScrollableID);
// Make FAKETRACKPOINTSCROLLABLE use nsWindow::WindowProc, and store the
// old window procedure in its "user data".
WNDPROC oldWndProc;
if (mUnicodeWidget)
oldWndProc = (WNDPROC)::SetWindowLongPtrW(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
else
oldWndProc = (WNDPROC)::SetWindowLongPtrA(scrollableWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
::SetWindowLongPtrW(scrollableWnd, GWLP_USERDATA, (LONG_PTR)oldWndProc);
}
// call the event callback to notify about creation
DispatchStandardEvent(NS_CREATE);
SubclassWindow(TRUE);
// If the internal variable set by the config.trim_on_minimize pref has not
// been initialized, and if this is the hidden window (conveniently created
// before any visible windows, and after the profile has been initialized),
// do some initialization work.
if (sTrimOnMinimize == 2 && mWindowType == eWindowType_invisible) {
// Our internal trim prevention logic is effective on 2K/XP at maintaining
// the working set when windows are minimized, but on Vista and up it has
// little to no effect. Since this feature has been the source of numerous
// bugs over the years, disable it (sTrimOnMinimize=1) on Vista and up.
sTrimOnMinimize =
Preferences::GetBool("config.trim_on_minimize",
(WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION)) ? 1 : 0;
sSwitchKeyboardLayout =
Preferences::GetBool("intl.keyboard.per_window_layout", false);
gDisableNativeTheme =
Preferences::GetBool("mozilla.widget.disable-native-theme", false);
}
return NS_OK;
}
// Close this nsWindow
NS_METHOD nsWindow::Destroy()
{
// WM_DESTROY has already fired, avoid calling it twice
if (mOnDestroyCalled)
return NS_OK;
// Don't destroy windows that have file pickers open, we'll tear these down
// later once the picker is closed.
mDestroyCalled = true;
if (mPickerDisplayCount)
return NS_OK;
// During the destruction of all of our children, make sure we don't get deleted.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
/**
* On windows the LayerManagerOGL destructor wants the widget to be around for
* cleanup. It also would like to have the HWND intact, so we NULL it here.
*/
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nsnull;
/* We should clear our cached resources now and not wait for the GC to
* delete the nsWindow. */
ClearCachedResources();
// The DestroyWindow function destroys the specified window. The function sends WM_DESTROY
// and WM_NCDESTROY messages to the window to deactivate it and remove the keyboard focus
// from it. The function also destroys the window's menu, flushes the thread message queue,
// destroys timers, removes clipboard ownership, and breaks the clipboard viewer chain (if
// the window is at the top of the viewer chain).
//
// If the specified window is a parent or owner window, DestroyWindow automatically destroys
// the associated child or owned windows when it destroys the parent or owner window. The
// function first destroys child or owned windows, and then it destroys the parent or owner
// window.
VERIFY(::DestroyWindow(mWnd));
// Our windows can be subclassed which may prevent us receiving WM_DESTROY. If OnDestroy()
// didn't get called, call it now.
if (false == mOnDestroyCalled) {
LRESULT result;
mWindowHook.Notify(mWnd, WM_DESTROY, 0, 0, &result);
OnDestroy();
}
return NS_OK;
}
/**************************************************************
*
* SECTION: Window class utilities
*
* Utilities for calculating the proper window class name for
* Create window.
*
**************************************************************/
void nsWindow::RegisterWindowClass(const nsString& aClassName, UINT aExtraStyle,
LPWSTR aIconID)
{
WNDCLASSW wc;
if (::GetClassInfoW(nsToolkit::mDllInstance, aClassName.get(), &wc)) {
// already registered
return;
}
wc.style = CS_DBLCLKS | aExtraStyle;
wc.lpfnWndProc = ::DefWindowProcW;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = nsToolkit::mDllInstance;
wc.hIcon = aIconID ? ::LoadIconW(::GetModuleHandleW(NULL), aIconID) : NULL;
wc.hCursor = NULL;
wc.hbrBackground = mBrush;
wc.lpszMenuName = NULL;
wc.lpszClassName = aClassName.get();
if (!::RegisterClassW(&wc)) {
// For older versions of Win32 (i.e., not XP), the registration may
// fail with aExtraStyle, so we have to re-register without it.
wc.style = CS_DBLCLKS;
::RegisterClassW(&wc);
}
}
static LPWSTR const gStockApplicationIcon = MAKEINTRESOURCEW(32512);
// Return the proper window class for everything except popups.
void nsWindow::GetWindowClass(nsString& aWindowClass)
{
switch (mWindowType) {
case eWindowType_invisible:
aWindowClass.AssignLiteral(kClassNameHidden);
RegisterWindowClass(aWindowClass, 0, gStockApplicationIcon);
break;
case eWindowType_dialog:
aWindowClass.AssignLiteral(kClassNameDialog);
RegisterWindowClass(aWindowClass, 0, 0);
break;
default:
GetMainWindowClass(aWindowClass);
RegisterWindowClass(aWindowClass, 0, gStockApplicationIcon);
break;
}
}
// Return the proper popup window class
void nsWindow::GetWindowPopupClass(nsString& aWindowClass)
{
aWindowClass.AssignLiteral(kClassNameDropShadow);
RegisterWindowClass(aWindowClass, CS_XP_DROPSHADOW, gStockApplicationIcon);
}
/**************************************************************
*
* SECTION: Window styles utilities
*
* Return the proper windows styles and extended styles.
*
**************************************************************/
// Return nsWindow styles
DWORD nsWindow::WindowStyle()
{
DWORD style;
switch (mWindowType) {
case eWindowType_plugin:
case eWindowType_child:
style = WS_OVERLAPPED;
break;
case eWindowType_dialog:
style = WS_OVERLAPPED | WS_BORDER | WS_DLGFRAME | WS_SYSMENU | DS_3DLOOK |
DS_MODALFRAME | WS_CLIPCHILDREN;
if (mBorderStyle != eBorderStyle_default)
style |= WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX;
break;
case eWindowType_popup:
style = WS_POPUP;
if (!HasGlass()) {
style |= WS_OVERLAPPED;
}
break;
default:
NS_ERROR("unknown border style");
// fall through
case eWindowType_toplevel:
case eWindowType_invisible:
style = WS_OVERLAPPED | WS_BORDER | WS_DLGFRAME | WS_SYSMENU |
WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_CLIPCHILDREN;
break;
}
if (mBorderStyle != eBorderStyle_default && mBorderStyle != eBorderStyle_all) {
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_border))
style &= ~WS_BORDER;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_title)) {
style &= ~WS_DLGFRAME;
style |= WS_POPUP;
style &= ~WS_CHILD;
}
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_close))
style &= ~0;
// XXX The close box can only be removed by changing the window class,
// as far as I know --- roc+moz@cs.cmu.edu
if (mBorderStyle == eBorderStyle_none ||
!(mBorderStyle & (eBorderStyle_menu | eBorderStyle_close)))
style &= ~WS_SYSMENU;
// Looks like getting rid of the system menu also does away with the
// close box. So, we only get rid of the system menu if you want neither it
// nor the close box. How does the Windows "Dialog" window class get just
// closebox and no sysmenu? Who knows.
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_resizeh))
style &= ~WS_THICKFRAME;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_minimize))
style &= ~WS_MINIMIZEBOX;
if (mBorderStyle == eBorderStyle_none || !(mBorderStyle & eBorderStyle_maximize))
style &= ~WS_MAXIMIZEBOX;
if (IsPopupWithTitleBar()) {
style |= WS_CAPTION;
if (mBorderStyle & eBorderStyle_close) {
style |= WS_SYSMENU;
}
}
}
VERIFY_WINDOW_STYLE(style);
return style;
}
// Return nsWindow extended styles
DWORD nsWindow::WindowExStyle()
{
switch (mWindowType)
{
case eWindowType_plugin:
case eWindowType_child:
return 0;
case eWindowType_dialog:
return WS_EX_WINDOWEDGE | WS_EX_DLGMODALFRAME;
case eWindowType_popup:
{
DWORD extendedStyle = WS_EX_TOOLWINDOW;
if (mPopupLevel == ePopupLevelTop)
extendedStyle |= WS_EX_TOPMOST;
return extendedStyle;
}
default:
NS_ERROR("unknown border style");
// fall through
case eWindowType_toplevel:
case eWindowType_invisible:
return WS_EX_WINDOWEDGE;
}
}
/**************************************************************
*
* SECTION: Window subclassing utilities
*
* Set or clear window subclasses on native windows. Used in
* Create and Destroy.
*
**************************************************************/
// Subclass (or remove the subclass from) this component's nsWindow
void nsWindow::SubclassWindow(BOOL bState)
{
if (NULL != mWnd) {
//NS_PRECONDITION(::IsWindow(mWnd), "Invalid window handle");
if (!::IsWindow(mWnd)) {
NS_ERROR("Invalid window handle");
}
if (bState) {
// change the nsWindow proc
if (mUnicodeWidget)
mPrevWndProc = (WNDPROC)::SetWindowLongPtrW(mWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
else
mPrevWndProc = (WNDPROC)::SetWindowLongPtrA(mWnd, GWLP_WNDPROC,
(LONG_PTR)nsWindow::WindowProc);
NS_ASSERTION(mPrevWndProc, "Null standard window procedure");
// connect the this pointer to the nsWindow handle
WinUtils::SetNSWindowPtr(mWnd, this);
}
else {
if (mUnicodeWidget)
::SetWindowLongPtrW(mWnd, GWLP_WNDPROC, (LONG_PTR)mPrevWndProc);
else
::SetWindowLongPtrA(mWnd, GWLP_WNDPROC, (LONG_PTR)mPrevWndProc);
WinUtils::SetNSWindowPtr(mWnd, NULL);
mPrevWndProc = NULL;
}
}
}
/**************************************************************
*
* SECTION: nsIWidget::SetParent, nsIWidget::GetParent
*
* Set or clear the parent widgets using window properties, and
* handles calculating native parent handles.
*
**************************************************************/
// Get and set parent widgets
NS_IMETHODIMP nsWindow::SetParent(nsIWidget *aNewParent)
{
mParent = aNewParent;
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
nsIWidget* parent = GetParent();
if (parent) {
parent->RemoveChild(this);
}
if (aNewParent) {
ReparentNativeWidget(aNewParent);
aNewParent->AddChild(this);
return NS_OK;
}
if (mWnd) {
// If we have no parent, SetParent should return the desktop.
VERIFY(::SetParent(mWnd, nsnull));
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::ReparentNativeWidget(nsIWidget* aNewParent)
{
NS_PRECONDITION(aNewParent, "");
mParent = aNewParent;
if (mWindowType == eWindowType_popup) {
return NS_OK;
}
HWND newParent = (HWND)aNewParent->GetNativeData(NS_NATIVE_WINDOW);
NS_ASSERTION(newParent, "Parent widget has a null native window handle");
if (newParent && mWnd) {
::SetParent(mWnd, newParent);
}
return NS_OK;
}
nsIWidget* nsWindow::GetParent(void)
{
return GetParentWindow(false);
}
float nsWindow::GetDPI()
{
HDC dc = ::GetDC(mWnd);
if (!dc)
return 96.0f;
double heightInches = ::GetDeviceCaps(dc, VERTSIZE)/MM_PER_INCH_FLOAT;
int heightPx = ::GetDeviceCaps(dc, VERTRES);
::ReleaseDC(mWnd, dc);
if (heightInches < 0.25) {
// Something's broken
return 96.0f;
}
return float(heightPx/heightInches);
}
nsWindow* nsWindow::GetParentWindow(bool aIncludeOwner)
{
if (mIsTopWidgetWindow) {
// Must use a flag instead of mWindowType to tell if the window is the
// owned by the topmost widget, because a child window can be embedded inside
// a HWND which is not associated with a nsIWidget.
return nsnull;
}
// If this widget has already been destroyed, pretend we have no parent.
// This corresponds to code in Destroy which removes the destroyed
// widget from its parent's child list.
if (mInDtor || mOnDestroyCalled)
return nsnull;
// aIncludeOwner set to true implies walking the parent chain to retrieve the
// root owner. aIncludeOwner set to false implies the search will stop at the
// true parent (default).
nsWindow* widget = nsnull;
if (mWnd) {
HWND parent = nsnull;
if (aIncludeOwner)
parent = ::GetParent(mWnd);
else
parent = ::GetAncestor(mWnd, GA_PARENT);
if (parent) {
widget = WinUtils::GetNSWindowPtr(parent);
if (widget) {
// If the widget is in the process of being destroyed then
// do NOT return it
if (widget->mInDtor) {
widget = nsnull;
}
}
}
}
return widget;
}
BOOL CALLBACK
nsWindow::EnumAllChildWindProc(HWND aWnd, LPARAM aParam)
{
nsWindow *wnd = WinUtils::GetNSWindowPtr(aWnd);
if (wnd) {
((nsWindow::WindowEnumCallback*)aParam)(wnd);
}
return TRUE;
}
BOOL CALLBACK
nsWindow::EnumAllThreadWindowProc(HWND aWnd, LPARAM aParam)
{
nsWindow *wnd = WinUtils::GetNSWindowPtr(aWnd);
if (wnd) {
((nsWindow::WindowEnumCallback*)aParam)(wnd);
}
EnumChildWindows(aWnd, EnumAllChildWindProc, aParam);
return TRUE;
}
void
nsWindow::EnumAllWindows(WindowEnumCallback aCallback)
{
EnumThreadWindows(GetCurrentThreadId(),
EnumAllThreadWindowProc,
(LPARAM)aCallback);
}
/**************************************************************
*
* SECTION: nsIWidget::Show
*
* Hide or show this component.
*
**************************************************************/
NS_METHOD nsWindow::Show(bool bState)
{
if (mWindowType == eWindowType_popup) {
// See bug 603793. When we try to draw D3D9/10 windows with a drop shadow
// without the DWM on a secondary monitor, windows fails to composite
// our windows correctly. We therefor switch off the drop shadow for
// pop-up windows when the DWM is disabled and two monitors are
// connected.
if (HasBogusPopupsDropShadowOnMultiMonitor() &&
WinUtils::GetMonitorCount() > 1 &&
!nsUXThemeData::CheckForCompositor())
{
if (sDropShadowEnabled) {
::SetClassLongA(mWnd, GCL_STYLE, 0);
sDropShadowEnabled = false;
}
} else {
if (!sDropShadowEnabled) {
::SetClassLongA(mWnd, GCL_STYLE, CS_DROPSHADOW);
sDropShadowEnabled = true;
}
}
}
#ifdef NS_FUNCTION_TIMER
static bool firstShow = true;
if (firstShow &&
(mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog ||
mWindowType == eWindowType_popup))
{
firstShow = false;
mozilla::FunctionTimer::LogMessage("@ First toplevel/dialog/popup showing");
}
#endif
bool syncInvalidate = false;
bool wasVisible = mIsVisible;
// Set the status now so that anyone asking during ShowWindow or
// SetWindowPos would get the correct answer.
mIsVisible = bState;
// We may have cached an out of date visible state. This can happen
// when session restore sets the full screen mode.
if (mIsVisible)
mOldStyle |= WS_VISIBLE;
else
mOldStyle &= ~WS_VISIBLE;
if (!mIsVisible && wasVisible) {
ClearCachedResources();
}
if (mWnd) {
if (bState) {
if (!wasVisible && mWindowType == eWindowType_toplevel) {
// speed up the initial paint after show for
// top level windows:
syncInvalidate = true;
switch (mSizeMode) {
case nsSizeMode_Fullscreen:
::ShowWindow(mWnd, SW_SHOW);
break;
case nsSizeMode_Maximized :
::ShowWindow(mWnd, SW_SHOWMAXIMIZED);
break;
case nsSizeMode_Minimized :
::ShowWindow(mWnd, SW_SHOWMINIMIZED);
break;
default:
if (CanTakeFocus()) {
::ShowWindow(mWnd, SW_SHOWNORMAL);
} else {
// Place the window behind the foreground window
// (as long as it is not topmost)
HWND wndAfter = ::GetForegroundWindow();
if (!wndAfter)
wndAfter = HWND_BOTTOM;
else if (GetWindowLongPtrW(wndAfter, GWL_EXSTYLE) & WS_EX_TOPMOST)
wndAfter = HWND_TOP;
::SetWindowPos(mWnd, wndAfter, 0, 0, 0, 0, SWP_SHOWWINDOW | SWP_NOSIZE |
SWP_NOMOVE | SWP_NOACTIVATE);
GetAttention(2);
}
break;
}
} else {
DWORD flags = SWP_NOSIZE | SWP_NOMOVE | SWP_SHOWWINDOW;
if (wasVisible)
flags |= SWP_NOZORDER;
if (mWindowType == eWindowType_popup) {
// ensure popups are the topmost of the TOPMOST
// layer. Remember not to set the SWP_NOZORDER
// flag as that might allow the taskbar to overlap
// the popup.
flags |= SWP_NOACTIVATE;
HWND owner = ::GetWindow(mWnd, GW_OWNER);
::SetWindowPos(mWnd, owner ? 0 : HWND_TOPMOST, 0, 0, 0, 0, flags);
} else {
if (mWindowType == eWindowType_dialog && !CanTakeFocus())
flags |= SWP_NOACTIVATE;
::SetWindowPos(mWnd, HWND_TOP, 0, 0, 0, 0, flags);
}
}
if (!wasVisible && (mWindowType == eWindowType_toplevel || mWindowType == eWindowType_dialog)) {
// when a toplevel window or dialog is shown, initialize the UI state
::SendMessageW(mWnd, WM_CHANGEUISTATE, MAKEWPARAM(UIS_INITIALIZE, UISF_HIDEFOCUS | UISF_HIDEACCEL), 0);
}
} else {
if (mWindowType != eWindowType_dialog) {
::ShowWindow(mWnd, SW_HIDE);
} else {
::SetWindowPos(mWnd, 0, 0, 0, 0, 0, SWP_HIDEWINDOW | SWP_NOSIZE | SWP_NOMOVE |
SWP_NOZORDER | SWP_NOACTIVATE);
}
}
}
#ifdef MOZ_XUL
if (!wasVisible && bState) {
Invalidate();
if (syncInvalidate) {
::UpdateWindow(mWnd);
}
}
#endif
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::IsVisible
*
* Returns the visibility state.
*
**************************************************************/
// Return true if the whether the component is visible, false otherwise
NS_METHOD nsWindow::IsVisible(bool & bState)
{
bState = mIsVisible;
return NS_OK;
}
/**************************************************************
*
* SECTION: Window clipping utilities
*
* Used in Size and Move operations for setting the proper
* window clipping regions for window transparency.
*
**************************************************************/
// XP and Vista visual styles sometimes require window clipping regions to be applied for proper
// transparency. These routines are called on size and move operations.
void nsWindow::ClearThemeRegion()
{
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION &&
!HasGlass() &&
(mWindowType == eWindowType_popup && !IsPopupWithTitleBar() &&
(mPopupType == ePopupTypeTooltip || mPopupType == ePopupTypePanel))) {
SetWindowRgn(mWnd, NULL, false);
}
}
void nsWindow::SetThemeRegion()
{
// Popup types that have a visual styles region applied (bug 376408). This can be expanded
// for other window types as needed. The regions are applied generically to the base window
// so default constants are used for part and state. At some point we might need part and
// state values from nsNativeThemeWin's GetThemePartAndState, but currently windows that
// change shape based on state haven't come up.
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION &&
!HasGlass() &&
(mWindowType == eWindowType_popup && !IsPopupWithTitleBar() &&
(mPopupType == ePopupTypeTooltip || mPopupType == ePopupTypePanel))) {
HRGN hRgn = nsnull;
RECT rect = {0,0,mBounds.width,mBounds.height};
HDC dc = ::GetDC(mWnd);
GetThemeBackgroundRegion(nsUXThemeData::GetTheme(eUXTooltip), dc, TTP_STANDARD, TS_NORMAL, &rect, &hRgn);
if (hRgn) {
if (!SetWindowRgn(mWnd, hRgn, false)) // do not delete or alter hRgn if accepted.
DeleteObject(hRgn);
}
::ReleaseDC(mWnd, dc);
}
}
/**************************************************************
*
* SECTION: nsIWidget::RegisterTouchWindow,
* nsIWidget::UnregisterTouchWindow, and helper functions
*
* Used to register the native window to receive touch events
*
**************************************************************/
NS_METHOD nsWindow::RegisterTouchWindow() {
mTouchWindow = true;
mGesture.RegisterTouchWindow(mWnd);
::EnumChildWindows(mWnd, nsWindow::RegisterTouchForDescendants, 0);
return NS_OK;
}
NS_METHOD nsWindow::UnregisterTouchWindow() {
mTouchWindow = false;
mGesture.UnregisterTouchWindow(mWnd);
::EnumChildWindows(mWnd, nsWindow::UnregisterTouchForDescendants, 0);
return NS_OK;
}
BOOL CALLBACK nsWindow::RegisterTouchForDescendants(HWND aWnd, LPARAM aMsg) {
nsWindow* win = WinUtils::GetNSWindowPtr(aWnd);
if (win)
win->mGesture.RegisterTouchWindow(aWnd);
return TRUE;
}
BOOL CALLBACK nsWindow::UnregisterTouchForDescendants(HWND aWnd, LPARAM aMsg) {
nsWindow* win = WinUtils::GetNSWindowPtr(aWnd);
if (win)
win->mGesture.UnregisterTouchWindow(aWnd);
return TRUE;
}
/**************************************************************
*
* SECTION: nsIWidget::Move, nsIWidget::Resize,
* nsIWidget::Size, nsIWidget::BeginResizeDrag
*
* Repositioning and sizing a window.
*
**************************************************************/
// Move this component
NS_METHOD nsWindow::Move(PRInt32 aX, PRInt32 aY)
{
if (mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog) {
SetSizeMode(nsSizeMode_Normal);
}
// Check to see if window needs to be moved first
// to avoid a costly call to SetWindowPos. This check
// can not be moved to the calling code in nsView, because
// some platforms do not position child windows correctly
// Only perform this check for non-popup windows, since the positioning can
// in fact change even when the x/y do not. We always need to perform the
// check. See bug #97805 for details.
if (mWindowType != eWindowType_popup && (mBounds.x == aX) && (mBounds.y == aY))
{
// Nothing to do, since it is already positioned correctly.
return NS_OK;
}
mBounds.x = aX;
mBounds.y = aY;
if (mWnd) {
#ifdef DEBUG
// complain if a window is moved offscreen (legal, but potentially worrisome)
if (mIsTopWidgetWindow) { // only a problem for top-level windows
// Make sure this window is actually on the screen before we move it
// XXX: Needs multiple monitor support
HDC dc = ::GetDC(mWnd);
if (dc) {
if (::GetDeviceCaps(dc, TECHNOLOGY) == DT_RASDISPLAY) {
RECT workArea;
::SystemParametersInfo(SPI_GETWORKAREA, 0, &workArea, 0);
// no annoying assertions. just mention the issue.
if (aX < 0 || aX >= workArea.right || aY < 0 || aY >= workArea.bottom) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("window moved to offscreen position\n"));
}
}
::ReleaseDC(mWnd, dc);
}
}
#endif
ClearThemeRegion();
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOSIZE;
// Workaround SetWindowPos bug with D3D9. If our window has a clip
// region, some drivers or OSes may incorrectly copy into the clipped-out
// area.
if (mWindowType == eWindowType_plugin &&
(!mLayerManager || mLayerManager->GetBackendType() == LayerManager::LAYERS_D3D9) &&
mClipRects &&
(mClipRectCount != 1 || !mClipRects[0].IsEqualInterior(nsIntRect(0, 0, mBounds.width, mBounds.height)))) {
flags |= SWP_NOCOPYBITS;
}
VERIFY(::SetWindowPos(mWnd, NULL, aX, aY, 0, 0, flags));
SetThemeRegion();
}
return NS_OK;
}
// Resize this component
NS_METHOD nsWindow::Resize(PRInt32 aWidth, PRInt32 aHeight, bool aRepaint)
{
NS_ASSERTION((aWidth >=0 ) , "Negative width passed to nsWindow::Resize");
NS_ASSERTION((aHeight >=0 ), "Negative height passed to nsWindow::Resize");
// Avoid unnecessary resizing calls
if (mBounds.width == aWidth && mBounds.height == aHeight && !aRepaint)
return NS_OK;
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(aWidth, aHeight);
#endif
// Set cached value for lightweight and printing
mBounds.width = aWidth;
mBounds.height = aHeight;
if (mWnd) {
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOMOVE;
if (!aRepaint) {
flags |= SWP_NOREDRAW;
}
ClearThemeRegion();
VERIFY(::SetWindowPos(mWnd, NULL, 0, 0, aWidth, GetHeight(aHeight), flags));
SetThemeRegion();
}
if (aRepaint)
Invalidate();
return NS_OK;
}
// Resize this component
NS_METHOD nsWindow::Resize(PRInt32 aX, PRInt32 aY, PRInt32 aWidth, PRInt32 aHeight, bool aRepaint)
{
NS_ASSERTION((aWidth >=0 ), "Negative width passed to nsWindow::Resize");
NS_ASSERTION((aHeight >=0 ), "Negative height passed to nsWindow::Resize");
// Avoid unnecessary resizing calls
if (mBounds.x == aX && mBounds.y == aY &&
mBounds.width == aWidth && mBounds.height == aHeight && !aRepaint)
return NS_OK;
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(aWidth, aHeight);
#endif
// Set cached value for lightweight and printing
mBounds.x = aX;
mBounds.y = aY;
mBounds.width = aWidth;
mBounds.height = aHeight;
if (mWnd) {
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE;
if (!aRepaint) {
flags |= SWP_NOREDRAW;
}
ClearThemeRegion();
VERIFY(::SetWindowPos(mWnd, NULL, aX, aY, aWidth, GetHeight(aHeight), flags));
SetThemeRegion();
}
if (aRepaint)
Invalidate();
return NS_OK;
}
NS_IMETHODIMP
nsWindow::BeginResizeDrag(nsGUIEvent* aEvent, PRInt32 aHorizontal, PRInt32 aVertical)
{
NS_ENSURE_ARG_POINTER(aEvent);
if (aEvent->eventStructType != NS_MOUSE_EVENT) {
// you can only begin a resize drag with a mouse event
return NS_ERROR_INVALID_ARG;
}
nsMouseEvent* mouseEvent = static_cast<nsMouseEvent*>(aEvent);
if (mouseEvent->button != nsMouseEvent::eLeftButton) {
// you can only begin a resize drag with the left mouse button
return NS_ERROR_INVALID_ARG;
}
// work out what sizemode we're talking about
WPARAM syscommand;
if (aVertical < 0) {
if (aHorizontal < 0) {
syscommand = SC_SIZE | WMSZ_TOPLEFT;
} else if (aHorizontal == 0) {
syscommand = SC_SIZE | WMSZ_TOP;
} else {
syscommand = SC_SIZE | WMSZ_TOPRIGHT;
}
} else if (aVertical == 0) {
if (aHorizontal < 0) {
syscommand = SC_SIZE | WMSZ_LEFT;
} else if (aHorizontal == 0) {
return NS_ERROR_INVALID_ARG;
} else {
syscommand = SC_SIZE | WMSZ_RIGHT;
}
} else {
if (aHorizontal < 0) {
syscommand = SC_SIZE | WMSZ_BOTTOMLEFT;
} else if (aHorizontal == 0) {
syscommand = SC_SIZE | WMSZ_BOTTOM;
} else {
syscommand = SC_SIZE | WMSZ_BOTTOMRIGHT;
}
}
// resizing doesn't work if the mouse is already captured
CaptureMouse(false);
// find the top-level window
HWND toplevelWnd = WinUtils::GetTopLevelHWND(mWnd, true);
// tell Windows to start the resize
::PostMessage(toplevelWnd, WM_SYSCOMMAND, syscommand,
POINTTOPOINTS(aEvent->refPoint));
return NS_OK;
}
/**************************************************************
*
* SECTION: Window Z-order and state.
*
* nsIWidget::PlaceBehind, nsIWidget::SetSizeMode,
* nsIWidget::ConstrainPosition
*
* Z-order, positioning, restore, minimize, and maximize.
*
**************************************************************/
// Position the window behind the given window
NS_METHOD nsWindow::PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
nsIWidget *aWidget, bool aActivate)
{
HWND behind = HWND_TOP;
if (aPlacement == eZPlacementBottom)
behind = HWND_BOTTOM;
else if (aPlacement == eZPlacementBelow && aWidget)
behind = (HWND)aWidget->GetNativeData(NS_NATIVE_WINDOW);
UINT flags = SWP_NOMOVE | SWP_NOREPOSITION | SWP_NOSIZE;
if (!aActivate)
flags |= SWP_NOACTIVATE;
if (!CanTakeFocus() && behind == HWND_TOP)
{
// Can't place the window to top so place it behind the foreground window
// (as long as it is not topmost)
HWND wndAfter = ::GetForegroundWindow();
if (!wndAfter)
behind = HWND_BOTTOM;
else if (!(GetWindowLongPtrW(wndAfter, GWL_EXSTYLE) & WS_EX_TOPMOST))
behind = wndAfter;
flags |= SWP_NOACTIVATE;
}
::SetWindowPos(mWnd, behind, 0, 0, 0, 0, flags);
return NS_OK;
}
// Maximize, minimize or restore the window.
NS_IMETHODIMP nsWindow::SetSizeMode(PRInt32 aMode) {
nsresult rv;
// Let's not try and do anything if we're already in that state.
// (This is needed to prevent problems when calling window.minimize(), which
// calls us directly, and then the OS triggers another call to us.)
if (aMode == mSizeMode)
return NS_OK;
// save the requested state
rv = nsBaseWidget::SetSizeMode(aMode);
if (NS_SUCCEEDED(rv) && mIsVisible) {
int mode;
switch (aMode) {
case nsSizeMode_Fullscreen :
mode = SW_SHOW;
break;
case nsSizeMode_Maximized :
mode = SW_MAXIMIZE;
break;
case nsSizeMode_Minimized :
// Using SW_SHOWMINIMIZED prevents the working set from being trimmed but
// keeps the window active in the tray. So after the window is minimized,
// windows will fire WM_WINDOWPOSCHANGED (OnWindowPosChanged) at which point
// we will do some additional processing to get the active window set right.
// If sTrimOnMinimize is set, we let windows handle minimization normally
// using SW_MINIMIZE.
mode = sTrimOnMinimize ? SW_MINIMIZE : SW_SHOWMINIMIZED;
break;
default :
mode = SW_RESTORE;
}
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
// Don't call ::ShowWindow if we're trying to "restore" a window that is
// already in a normal state. Prevents a bug where snapping to one side
// of the screen and then minimizing would cause Windows to forget our
// window's correct restored position/size.
if( !(pl.showCmd == SW_SHOWNORMAL && mode == SW_RESTORE) ) {
::ShowWindow(mWnd, mode);
}
// we dispatch an activate event here to ensure that the right child window
// is focused
if (mode == SW_RESTORE || mode == SW_MAXIMIZE || mode == SW_SHOW)
DispatchFocusToTopLevelWindow(NS_ACTIVATE);
}
return rv;
}
// Constrain a potential move to fit onscreen
NS_METHOD nsWindow::ConstrainPosition(bool aAllowSlop,
PRInt32 *aX, PRInt32 *aY)
{
if (!mIsTopWidgetWindow) // only a problem for top-level windows
return NS_OK;
bool doConstrain = false; // whether we have enough info to do anything
/* get our playing field. use the current screen, or failing that
for any reason, use device caps for the default screen. */
RECT screenRect;
nsCOMPtr<nsIScreenManager> screenmgr = do_GetService(sScreenManagerContractID);
if (screenmgr) {
nsCOMPtr<nsIScreen> screen;
PRInt32 left, top, width, height;
// zero size rects confuse the screen manager
width = mBounds.width > 0 ? mBounds.width : 1;
height = mBounds.height > 0 ? mBounds.height : 1;
screenmgr->ScreenForRect(*aX, *aY, width, height,
getter_AddRefs(screen));
if (screen) {
if (mSizeMode != nsSizeMode_Fullscreen) {
// For normalized windows, use the desktop work area.
screen->GetAvailRect(&left, &top, &width, &height);
} else {
// For full screen windows, use the desktop.
screen->GetRect(&left, &top, &width, &height);
}
screenRect.left = left;
screenRect.right = left+width;
screenRect.top = top;
screenRect.bottom = top+height;
doConstrain = true;
}
} else {
if (mWnd) {
HDC dc = ::GetDC(mWnd);
if (dc) {
if (::GetDeviceCaps(dc, TECHNOLOGY) == DT_RASDISPLAY) {
if (mSizeMode != nsSizeMode_Fullscreen) {
::SystemParametersInfo(SPI_GETWORKAREA, 0, &screenRect, 0);
} else {
screenRect.left = screenRect.top = 0;
screenRect.right = GetSystemMetrics(SM_CXFULLSCREEN);
screenRect.bottom = GetSystemMetrics(SM_CYFULLSCREEN);
}
doConstrain = true;
}
::ReleaseDC(mWnd, dc);
}
}
}
if (aAllowSlop) {
if (*aX < screenRect.left - mBounds.width + kWindowPositionSlop)
*aX = screenRect.left - mBounds.width + kWindowPositionSlop;
else if (*aX >= screenRect.right - kWindowPositionSlop)
*aX = screenRect.right - kWindowPositionSlop;
if (*aY < screenRect.top - mBounds.height + kWindowPositionSlop)
*aY = screenRect.top - mBounds.height + kWindowPositionSlop;
else if (*aY >= screenRect.bottom - kWindowPositionSlop)
*aY = screenRect.bottom - kWindowPositionSlop;
} else {
if (*aX < screenRect.left)
*aX = screenRect.left;
else if (*aX >= screenRect.right - mBounds.width)
*aX = screenRect.right - mBounds.width;
if (*aY < screenRect.top)
*aY = screenRect.top;
else if (*aY >= screenRect.bottom - mBounds.height)
*aY = screenRect.bottom - mBounds.height;
}
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::Enable, nsIWidget::IsEnabled
*
* Enabling and disabling the widget.
*
**************************************************************/
// Enable/disable this component
NS_METHOD nsWindow::Enable(bool bState)
{
if (mWnd) {
::EnableWindow(mWnd, bState);
}
return NS_OK;
}
// Return the current enable state
NS_METHOD nsWindow::IsEnabled(bool *aState)
{
NS_ENSURE_ARG_POINTER(aState);
*aState = !mWnd || (::IsWindowEnabled(mWnd) && ::IsWindowEnabled(::GetAncestor(mWnd, GA_ROOT)));
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::SetFocus
*
* Give the focus to this widget.
*
**************************************************************/
NS_METHOD nsWindow::SetFocus(bool aRaise)
{
if (mWnd) {
#ifdef WINSTATE_DEBUG_OUTPUT
if (mWnd == WinUtils::GetTopLevelHWND(mWnd)) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** SetFocus: [ top] raise=%d\n", aRaise));
} else {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** SetFocus: [child] raise=%d\n", aRaise));
}
#endif
// Uniconify, if necessary
HWND toplevelWnd = WinUtils::GetTopLevelHWND(mWnd);
if (aRaise && ::IsIconic(toplevelWnd)) {
::ShowWindow(toplevelWnd, SW_RESTORE);
}
::SetFocus(mWnd);
}
return NS_OK;
}
/**************************************************************
*
* SECTION: Bounds
*
* GetBounds, GetClientBounds, GetScreenBounds, GetClientOffset
* SetDrawsInTitlebar, GetNonClientMargins, SetNonClientMargins
*
* Bound calculations.
*
**************************************************************/
// Return the window's full dimensions in screen coordinates.
// If the window has a parent, converts the origin to an offset
// of the parent's screen origin.
NS_METHOD nsWindow::GetBounds(nsIntRect &aRect)
{
if (mWnd) {
RECT r;
VERIFY(::GetWindowRect(mWnd, &r));
// assign size
aRect.width = r.right - r.left;
aRect.height = r.bottom - r.top;
// popup window bounds' are in screen coordinates, not relative to parent
// window
if (mWindowType == eWindowType_popup) {
aRect.x = r.left;
aRect.y = r.top;
return NS_OK;
}
// chrome on parent:
// ___ 5,5 (chrome start)
// | ____ 10,10 (client start)
// | | ____ 20,20 (child start)
// | | |
// 20,20 - 5,5 = 15,15 (??)
// minus GetClientOffset:
// 15,15 - 5,5 = 10,10
//
// no chrome on parent:
// ______ 10,10 (win start)
// | ____ 20,20 (child start)
// | |
// 20,20 - 10,10 = 10,10
//
// walking the chain:
// ___ 5,5 (chrome start)
// | ___ 10,10 (client start)
// | | ___ 20,20 (child start)
// | | | __ 30,30 (child start)
// | | | |
// 30,30 - 20,20 = 10,10 (offset from second child to first)
// 20,20 - 5,5 = 15,15 + 10,10 = 25,25 (??)
// minus GetClientOffset:
// 25,25 - 5,5 = 20,20 (offset from second child to parent client)
// convert coordinates if parent exists
HWND parent = ::GetParent(mWnd);
if (parent) {
RECT pr;
VERIFY(::GetWindowRect(parent, &pr));
r.left -= pr.left;
r.top -= pr.top;
// adjust for chrome
nsWindow* pWidget = static_cast<nsWindow*>(GetParent());
if (pWidget && pWidget->IsTopLevelWidget()) {
nsIntPoint clientOffset = pWidget->GetClientOffset();
r.left -= clientOffset.x;
r.top -= clientOffset.y;
}
}
aRect.x = r.left;
aRect.y = r.top;
} else {
aRect = mBounds;
}
return NS_OK;
}
// Get this component dimension
NS_METHOD nsWindow::GetClientBounds(nsIntRect &aRect)
{
if (mWnd) {
RECT r;
VERIFY(::GetClientRect(mWnd, &r));
nsIntRect bounds;
GetBounds(bounds);
aRect.MoveTo(bounds.TopLeft() + GetClientOffset());
aRect.width = r.right - r.left;
aRect.height = r.bottom - r.top;
} else {
aRect.SetRect(0,0,0,0);
}
return NS_OK;
}
// Like GetBounds, but don't offset by the parent
NS_METHOD nsWindow::GetScreenBounds(nsIntRect &aRect)
{
if (mWnd) {
RECT r;
VERIFY(::GetWindowRect(mWnd, &r));
aRect.width = r.right - r.left;
aRect.height = r.bottom - r.top;
aRect.x = r.left;
aRect.y = r.top;
} else
aRect = mBounds;
return NS_OK;
}
// return the x,y offset of the client area from the origin
// of the window. If the window is borderless returns (0,0).
nsIntPoint nsWindow::GetClientOffset()
{
if (!mWnd) {
return nsIntPoint(0, 0);
}
RECT r1;
GetWindowRect(mWnd, &r1);
nsIntPoint pt = WidgetToScreenOffset();
return nsIntPoint(pt.x - r1.left, pt.y - r1.top);
}
void
nsWindow::SetDrawsInTitlebar(bool aState)
{
nsWindow * window = GetTopLevelWindow(true);
if (window && window != this) {
return window->SetDrawsInTitlebar(aState);
}
if (aState) {
// left, top, right, bottom for nsIntMargin
nsIntMargin margins(-1, 0, -1, -1);
SetNonClientMargins(margins);
}
else {
nsIntMargin margins(-1, -1, -1, -1);
SetNonClientMargins(margins);
}
}
NS_IMETHODIMP
nsWindow::GetNonClientMargins(nsIntMargin &margins)
{
nsWindow * window = GetTopLevelWindow(true);
if (window && window != this) {
return window->GetNonClientMargins(margins);
}
if (mCustomNonClient) {
margins = mNonClientMargins;
return NS_OK;
}
margins.top = GetSystemMetrics(SM_CYCAPTION);
margins.bottom = GetSystemMetrics(SM_CYFRAME);
margins.top += margins.bottom;
margins.left = margins.right = GetSystemMetrics(SM_CYFRAME);
return NS_OK;
}
void
nsWindow::ResetLayout()
{
// This will trigger a frame changed event, triggering
// nc calc size and a sizemode gecko event.
SetWindowPos(mWnd, 0, 0, 0, 0, 0,
SWP_FRAMECHANGED|SWP_NOACTIVATE|SWP_NOMOVE|
SWP_NOOWNERZORDER|SWP_NOSIZE|SWP_NOZORDER);
// If hidden, just send the frame changed event for now.
if (!mIsVisible)
return;
// Send a gecko size event to trigger reflow.
RECT clientRc = {0};
GetClientRect(mWnd, &clientRc);
nsIntRect evRect(nsWindowGfx::ToIntRect(clientRc));
OnResize(evRect);
// Invalidate and update
Invalidate();
}
// Internally track the caption status via a window property. Required
// due to our internal handling of WM_NCACTIVATE when custom client
// margins are set.
static const PRUnichar kManageWindowInfoProperty[] = L"ManageWindowInfoProperty";
typedef BOOL (WINAPI *GetWindowInfoPtr)(HWND hwnd, PWINDOWINFO pwi);
static GetWindowInfoPtr sGetWindowInfoPtrStub = NULL;
BOOL WINAPI
GetWindowInfoHook(HWND hWnd, PWINDOWINFO pwi)
{
if (!sGetWindowInfoPtrStub) {
NS_ASSERTION(FALSE, "Something is horribly wrong in GetWindowInfoHook!");
return FALSE;
}
int windowStatus =
reinterpret_cast<LONG_PTR>(GetPropW(hWnd, kManageWindowInfoProperty));
// No property set, return the default data.
if (!windowStatus)
return sGetWindowInfoPtrStub(hWnd, pwi);
// Call GetWindowInfo and update dwWindowStatus with our
// internally tracked value.
BOOL result = sGetWindowInfoPtrStub(hWnd, pwi);
if (result && pwi)
pwi->dwWindowStatus = (windowStatus == 1 ? 0 : WS_ACTIVECAPTION);
return result;
}
void
nsWindow::UpdateGetWindowInfoCaptionStatus(bool aActiveCaption)
{
if (!mWnd)
return;
if (!sGetWindowInfoPtrStub) {
sUser32Intercept.Init("user32.dll");
if (!sUser32Intercept.AddHook("GetWindowInfo", reinterpret_cast<intptr_t>(GetWindowInfoHook),
(void**) &sGetWindowInfoPtrStub))
return;
}
// Update our internally tracked caption status
SetPropW(mWnd, kManageWindowInfoProperty,
reinterpret_cast<HANDLE>(static_cast<int>(aActiveCaption) + 1));
}
// Called when the window layout changes: full screen mode transitions,
// theme changes, and composition changes. Calculates the new non-client
// margins and fires off a frame changed event, which triggers an nc calc
// size windows event, kicking the changes in.
bool
nsWindow::UpdateNonClientMargins(PRInt32 aSizeMode, bool aReflowWindow)
{
if (!mCustomNonClient)
return false;
mNonClientOffset.top = mNonClientOffset.bottom =
mNonClientOffset.left = mNonClientOffset.right = 0;
mCaptionHeight = mVertResizeMargin = mHorResizeMargin = 0;
if (aSizeMode == -1)
aSizeMode = mSizeMode;
if (aSizeMode == nsSizeMode_Minimized ||
aSizeMode == nsSizeMode_Fullscreen) {
return true;
}
bool hasCaption = (mBorderStyle & (eBorderStyle_all |
eBorderStyle_title |
eBorderStyle_menu |
eBorderStyle_default)) > 0 ? true : false;
if (hasCaption)
mCaptionHeight = GetSystemMetrics(SM_CYCAPTION);
mHorResizeMargin = GetSystemMetrics(SM_CXFRAME);
mVertResizeMargin = GetSystemMetrics(SM_CYFRAME);
mCaptionHeight += mVertResizeMargin;
// Custom margin offset calculations for the chrome margin attribute on a
// window. The offsets calculated here are added to the client area in the
// WM_NCCALCSIZE event:
// -1 - leave the default frame in place
// 0 - remove the frame, our frame offset equals the default frame size
// >0 - frame size equals (default frame size - margin value) with the
// restriction that the offset <= default frame size.
if (!mNonClientMargins.top)
mNonClientOffset.top = mCaptionHeight;
else if (mNonClientMargins.top > 0)
mNonClientOffset.top = NS_MIN(mCaptionHeight, mNonClientMargins.top);
if (!mNonClientMargins.left)
mNonClientOffset.left = mHorResizeMargin;
else if (mNonClientMargins.left > 0)
mNonClientOffset.left = NS_MIN(mHorResizeMargin, mNonClientMargins.left);
if (!mNonClientMargins.right)
mNonClientOffset.right = mHorResizeMargin;
else if (mNonClientMargins.right > 0)
mNonClientOffset.right = NS_MIN(mHorResizeMargin, mNonClientMargins.right);
if (!mNonClientMargins.bottom)
mNonClientOffset.bottom = mVertResizeMargin;
else if (mNonClientMargins.bottom > 0)
mNonClientOffset.bottom = NS_MIN(mVertResizeMargin, mNonClientMargins.bottom);
// Disable chrome margins > 0 in two cases:
// - For non-glass desktops: The window frame is painted with textures that
// require the entire space of the default frame. We allow a full frame or
// no frame at all.
// - For maximized windows: Windows positions maximized windows such that the
// outer bounds sit off screen a distance equal to the standard frame size.
if(!nsUXThemeData::CheckForCompositor() || aSizeMode == nsSizeMode_Maximized) {
if (mNonClientMargins.top > 0)
mNonClientOffset.top = 0;
if (mNonClientMargins.bottom > 0)
mNonClientOffset.bottom = 0;
if (mNonClientMargins.left > 0)
mNonClientOffset.left = 0;
if (mNonClientMargins.right > 0)
mNonClientOffset.right = 0;
}
if (aSizeMode == nsSizeMode_Maximized) {
// For chrome margins = 0 on maximized windows, Windows places the bounds
// off screen a distance equal to the standard frame size. Remove this
// area from our expanded client area.
if (!mNonClientMargins.bottom)
mNonClientOffset.bottom = 0;
if (!mNonClientMargins.left)
mNonClientOffset.left = 0;
if (!mNonClientMargins.right)
mNonClientOffset.right = 0;
// This should be (mCaptionHeight - mVertResizeMargin). But if we offset
// the client area by just SM_CYCAPTION (placing the top of the client
// area level with the visible screen) Windows dwm def proc fails to pick
// up mouse hover and clicks on the glass control buttons. To compensate,
// we position the client area off screen by mVertResizeMargin, and add
// widget padding in nsNativeThemeWin::GetWidgetPadding().
if (!mNonClientMargins.top)
mNonClientOffset.top = mCaptionHeight;
// Address an issue with auto-hide taskbars which fall behind the window.
// Ensure a 1 pixel margin at the bottom of the monitor so that unhiding
// the taskbar works properly.
MONITORINFO info = {sizeof(MONITORINFO)};
if (::GetMonitorInfo(::MonitorFromWindow(mWnd, MONITOR_DEFAULTTOPRIMARY),
&info)) {
RECT r;
if (::GetWindowRect(mWnd, &r)) {
// Adjust window rect to account for non-client margins.
r.top += mVertResizeMargin - mNonClientOffset.top;
r.left += mHorResizeMargin - mNonClientOffset.left;
r.bottom -= mVertResizeMargin - mNonClientOffset.bottom;
r.right -= mHorResizeMargin - mNonClientOffset.right;
// Leave the 1 pixel margin if the window covers the monitor.
if (r.top <= info.rcMonitor.top &&
r.left <= info.rcMonitor.left &&
r.right >= info.rcMonitor.right &&
r.bottom >= info.rcMonitor.bottom)
mNonClientOffset.bottom -= r.bottom - info.rcMonitor.bottom + 1;
}
}
}
if (aReflowWindow) {
// Force a reflow of content based on the new client
// dimensions.
ResetLayout();
}
return true;
}
NS_IMETHODIMP
nsWindow::SetNonClientMargins(nsIntMargin &margins)
{
if (!mIsTopWidgetWindow ||
mBorderStyle & eBorderStyle_none ||
mHideChrome)
return NS_ERROR_INVALID_ARG;
// Request for a reset
if (margins.top == -1 && margins.left == -1 &&
margins.right == -1 && margins.bottom == -1) {
mCustomNonClient = false;
mNonClientMargins = margins;
RemovePropW(mWnd, kManageWindowInfoProperty);
// Force a reflow of content based on the new client
// dimensions.
ResetLayout();
return NS_OK;
}
if (margins.top < -1 || margins.bottom < -1 ||
margins.left < -1 || margins.right < -1)
return NS_ERROR_INVALID_ARG;
mNonClientMargins = margins;
mCustomNonClient = true;
if (!UpdateNonClientMargins()) {
NS_WARNING("UpdateNonClientMargins failed!");
return false;
}
return NS_OK;
}
void
nsWindow::InvalidateNonClientRegion()
{
// +-+-----------------------+-+
// | | app non-client chrome | |
// | +-----------------------+ |
// | | app client chrome | | }
// | +-----------------------+ | }
// | | app content | | } area we don't want to invalidate
// | +-----------------------+ | }
// | | app client chrome | | }
// | +-----------------------+ |
// +---------------------------+ <
// ^ ^ windows non-client chrome
// client area = app *
RECT rect;
GetWindowRect(mWnd, &rect);
MapWindowPoints(NULL, mWnd, (LPPOINT)&rect, 2);
HRGN winRgn = CreateRectRgnIndirect(&rect);
// Subtract app client chrome and app content leaving
// windows non-client chrome and app non-client chrome
// in winRgn.
GetWindowRect(mWnd, &rect);
rect.top += mCaptionHeight;
rect.right -= mHorResizeMargin;
rect.bottom -= mHorResizeMargin;
rect.left += mVertResizeMargin;
MapWindowPoints(NULL, mWnd, (LPPOINT)&rect, 2);
HRGN clientRgn = CreateRectRgnIndirect(&rect);
CombineRgn(winRgn, winRgn, clientRgn, RGN_DIFF);
DeleteObject(clientRgn);
// triggers ncpaint and paint events for the two areas
RedrawWindow(mWnd, NULL, winRgn, RDW_FRAME|RDW_INVALIDATE);
DeleteObject(winRgn);
}
HRGN
nsWindow::ExcludeNonClientFromPaintRegion(HRGN aRegion)
{
RECT rect;
HRGN rgn = NULL;
if (aRegion == (HRGN)1) { // undocumented value indicating a full refresh
GetWindowRect(mWnd, &rect);
rgn = CreateRectRgnIndirect(&rect);
} else {
rgn = aRegion;
}
GetClientRect(mWnd, &rect);
MapWindowPoints(mWnd, NULL, (LPPOINT)&rect, 2);
HRGN nonClientRgn = CreateRectRgnIndirect(&rect);
CombineRgn(rgn, rgn, nonClientRgn, RGN_DIFF);
DeleteObject(nonClientRgn);
return rgn;
}
/**************************************************************
*
* SECTION: nsIWidget::SetBackgroundColor
*
* Sets the window background paint color.
*
**************************************************************/
NS_METHOD nsWindow::SetBackgroundColor(const nscolor &aColor)
{
nsBaseWidget::SetBackgroundColor(aColor);
if (mBrush)
::DeleteObject(mBrush);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(mBackground));
if (mWnd != NULL) {
::SetClassLongPtrW(mWnd, GCLP_HBRBACKGROUND, (LONG_PTR)mBrush);
}
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::SetCursor
*
* SetCursor and related utilities for manging cursor state.
*
**************************************************************/
// Set this component cursor
NS_METHOD nsWindow::SetCursor(nsCursor aCursor)
{
// Only change cursor if it's changing
//XXX mCursor isn't always right. Scrollbars and others change it, too.
//XXX If we want this optimization we need a better way to do it.
//if (aCursor != mCursor) {
HCURSOR newCursor = NULL;
switch (aCursor) {
case eCursor_select:
newCursor = ::LoadCursor(NULL, IDC_IBEAM);
break;
case eCursor_wait:
newCursor = ::LoadCursor(NULL, IDC_WAIT);
break;
case eCursor_hyperlink:
{
newCursor = ::LoadCursor(NULL, IDC_HAND);
break;
}
case eCursor_standard:
newCursor = ::LoadCursor(NULL, IDC_ARROW);
break;
case eCursor_n_resize:
case eCursor_s_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZENS);
break;
case eCursor_w_resize:
case eCursor_e_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZEWE);
break;
case eCursor_nw_resize:
case eCursor_se_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZENWSE);
break;
case eCursor_ne_resize:
case eCursor_sw_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZENESW);
break;
case eCursor_crosshair:
newCursor = ::LoadCursor(NULL, IDC_CROSS);
break;
case eCursor_move:
newCursor = ::LoadCursor(NULL, IDC_SIZEALL);
break;
case eCursor_help:
newCursor = ::LoadCursor(NULL, IDC_HELP);
break;
case eCursor_copy: // CSS3
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_COPY));
break;
case eCursor_alias:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ALIAS));
break;
case eCursor_cell:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_CELL));
break;
case eCursor_grab:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_GRAB));
break;
case eCursor_grabbing:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_GRABBING));
break;
case eCursor_spinning:
newCursor = ::LoadCursor(NULL, IDC_APPSTARTING);
break;
case eCursor_context_menu:
// XXX this CSS3 cursor needs to be implemented
break;
case eCursor_zoom_in:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ZOOMIN));
break;
case eCursor_zoom_out:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ZOOMOUT));
break;
case eCursor_not_allowed:
case eCursor_no_drop:
newCursor = ::LoadCursor(NULL, IDC_NO);
break;
case eCursor_col_resize:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_COLRESIZE));
break;
case eCursor_row_resize:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_ROWRESIZE));
break;
case eCursor_vertical_text:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_VERTICALTEXT));
break;
case eCursor_all_scroll:
// XXX not 100% appropriate perhaps
newCursor = ::LoadCursor(NULL, IDC_SIZEALL);
break;
case eCursor_nesw_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZENESW);
break;
case eCursor_nwse_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZENWSE);
break;
case eCursor_ns_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZENS);
break;
case eCursor_ew_resize:
newCursor = ::LoadCursor(NULL, IDC_SIZEWE);
break;
case eCursor_none:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_NONE));
break;
default:
NS_ERROR("Invalid cursor type");
break;
}
if (NULL != newCursor) {
mCursor = aCursor;
HCURSOR oldCursor = ::SetCursor(newCursor);
if (sHCursor == oldCursor) {
NS_IF_RELEASE(sCursorImgContainer);
if (sHCursor != NULL)
::DestroyIcon(sHCursor);
sHCursor = NULL;
}
}
return NS_OK;
}
// Setting the actual cursor
NS_IMETHODIMP nsWindow::SetCursor(imgIContainer* aCursor,
PRUint32 aHotspotX, PRUint32 aHotspotY)
{
if (sCursorImgContainer == aCursor && sHCursor) {
::SetCursor(sHCursor);
return NS_OK;
}
PRInt32 width;
PRInt32 height;
nsresult rv;
rv = aCursor->GetWidth(&width);
NS_ENSURE_SUCCESS(rv, rv);
rv = aCursor->GetHeight(&height);
NS_ENSURE_SUCCESS(rv, rv);
// Reject cursors greater than 128 pixels in either direction, to prevent
// spoofing.
// XXX ideally we should rescale. Also, we could modify the API to
// allow trusted content to set larger cursors.
if (width > 128 || height > 128)
return NS_ERROR_NOT_AVAILABLE;
HCURSOR cursor;
// No scaling
gfxIntSize size(0, 0);
rv = nsWindowGfx::CreateIcon(aCursor, true, aHotspotX, aHotspotY, size, &cursor);
NS_ENSURE_SUCCESS(rv, rv);
mCursor = nsCursor(-1);
::SetCursor(cursor);
NS_IF_RELEASE(sCursorImgContainer);
sCursorImgContainer = aCursor;
NS_ADDREF(sCursorImgContainer);
if (sHCursor != NULL)
::DestroyIcon(sHCursor);
sHCursor = cursor;
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::Get/SetTransparencyMode
*
* Manage the transparency mode of the top-level window
* containing this widget.
*
**************************************************************/
#ifdef MOZ_XUL
nsTransparencyMode nsWindow::GetTransparencyMode()
{
return GetTopLevelWindow(true)->GetWindowTranslucencyInner();
}
void nsWindow::SetTransparencyMode(nsTransparencyMode aMode)
{
GetTopLevelWindow(true)->SetWindowTranslucencyInner(aMode);
}
static const nsIntRegion
RegionFromArray(const nsTArray<nsIntRect>& aRects)
{
nsIntRegion region;
for (PRUint32 i = 0; i < aRects.Length(); ++i) {
region.Or(region, aRects[i]);
}
return region;
}
void nsWindow::UpdateOpaqueRegion(const nsIntRegion &aOpaqueRegion)
{
if (!HasGlass() || GetParent())
return;
// If there is no opaque region or hidechrome=true, set margins
// to support a full sheet of glass. Comments in MSDN indicate
// all values must be set to -1 to get a full sheet of glass.
MARGINS margins = { -1, -1, -1, -1 };
if (!aOpaqueRegion.IsEmpty()) {
nsIntRect pluginBounds;
for (nsIWidget* child = GetFirstChild(); child; child = child->GetNextSibling()) {
nsWindowType type;
child->GetWindowType(type);
if (type == eWindowType_plugin) {
// Collect the bounds of all plugins for GetLargestRectangle.
nsIntRect childBounds;
child->GetBounds(childBounds);
pluginBounds.UnionRect(pluginBounds, childBounds);
}
}
nsIntRect clientBounds;
GetClientBounds(clientBounds);
// Find the largest rectangle and use that to calculate the inset. Our top
// priority is to include the bounds of all plugins.
nsIntRect largest = aOpaqueRegion.GetLargestRectangle(pluginBounds);
margins.cxLeftWidth = largest.x;
margins.cxRightWidth = clientBounds.width - largest.XMost();
margins.cyBottomHeight = clientBounds.height - largest.YMost();
if (mCustomNonClient) {
// The minimum glass height must be the caption buttons height,
// otherwise the buttons are drawn incorrectly.
largest.y = NS_MAX<PRUint32>(largest.y,
nsUXThemeData::sCommandButtons[CMDBUTTONIDX_BUTTONBOX].cy);
}
margins.cyTopHeight = largest.y;
}
// Only update glass area if there are changes
if (memcmp(&mGlassMargins, &margins, sizeof mGlassMargins)) {
mGlassMargins = margins;
UpdateGlass();
}
}
void nsWindow::UpdateGlass()
{
MARGINS margins = mGlassMargins;
// DWMNCRP_USEWINDOWSTYLE - The non-client rendering area is
// rendered based on the window style.
// DWMNCRP_ENABLED - The non-client area rendering is
// enabled; the window style is ignored.
DWMNCRENDERINGPOLICY policy = DWMNCRP_USEWINDOWSTYLE;
switch (mTransparencyMode) {
case eTransparencyBorderlessGlass:
// Only adjust if there is some opaque rectangle
if (margins.cxLeftWidth >= 0) {
margins.cxLeftWidth += kGlassMarginAdjustment;
margins.cyTopHeight += kGlassMarginAdjustment;
margins.cxRightWidth += kGlassMarginAdjustment;
margins.cyBottomHeight += kGlassMarginAdjustment;
}
// Fall through
case eTransparencyGlass:
policy = DWMNCRP_ENABLED;
break;
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("glass margins: left:%d top:%d right:%d bottom:%d\n",
margins.cxLeftWidth, margins.cyTopHeight,
margins.cxRightWidth, margins.cyBottomHeight));
// Extends the window frame behind the client area
if(nsUXThemeData::CheckForCompositor()) {
nsUXThemeData::dwmExtendFrameIntoClientAreaPtr(mWnd, &margins);
nsUXThemeData::dwmSetWindowAttributePtr(mWnd, DWMWA_NCRENDERING_POLICY, &policy, sizeof policy);
}
}
#endif
/**************************************************************
*
* SECTION: nsIWidget::HideWindowChrome
*
* Show or hide window chrome.
*
**************************************************************/
NS_IMETHODIMP nsWindow::HideWindowChrome(bool aShouldHide)
{
HWND hwnd = WinUtils::GetTopLevelHWND(mWnd, true);
if (!WinUtils::GetNSWindowPtr(hwnd))
{
NS_WARNING("Trying to hide window decorations in an embedded context");
return NS_ERROR_FAILURE;
}
if (mHideChrome == aShouldHide)
return NS_OK;
DWORD_PTR style, exStyle;
mHideChrome = aShouldHide;
if (aShouldHide) {
DWORD_PTR tempStyle = ::GetWindowLongPtrW(hwnd, GWL_STYLE);
DWORD_PTR tempExStyle = ::GetWindowLongPtrW(hwnd, GWL_EXSTYLE);
style = tempStyle & ~(WS_CAPTION | WS_THICKFRAME);
exStyle = tempExStyle & ~(WS_EX_DLGMODALFRAME | WS_EX_WINDOWEDGE |
WS_EX_CLIENTEDGE | WS_EX_STATICEDGE);
mOldStyle = tempStyle;
mOldExStyle = tempExStyle;
}
else {
if (!mOldStyle || !mOldExStyle) {
mOldStyle = ::GetWindowLongPtrW(hwnd, GWL_STYLE);
mOldExStyle = ::GetWindowLongPtrW(hwnd, GWL_EXSTYLE);
}
style = mOldStyle;
exStyle = mOldExStyle;
}
VERIFY_WINDOW_STYLE(style);
::SetWindowLongPtrW(hwnd, GWL_STYLE, style);
::SetWindowLongPtrW(hwnd, GWL_EXSTYLE, exStyle);
return NS_OK;
}
/**************************************************************
*
* SECTION: nsWindow::Invalidate
*
* Invalidate an area of the client for painting.
*
**************************************************************/
// Invalidate this component visible area
NS_METHOD nsWindow::Invalidate(bool aEraseBackground,
bool aUpdateNCArea,
bool aIncludeChildren)
{
if (!mWnd) {
return NS_OK;
}
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpInvalidate(stdout,
this,
nsnull,
nsCAutoString("noname"),
(PRInt32) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
DWORD flags = RDW_INVALIDATE;
if (aEraseBackground) {
flags |= RDW_ERASE;
}
if (aUpdateNCArea) {
flags |= RDW_FRAME;
}
if (aIncludeChildren) {
flags |= RDW_ALLCHILDREN;
}
VERIFY(::RedrawWindow(mWnd, NULL, NULL, flags));
return NS_OK;
}
// Invalidate this component visible area
NS_METHOD nsWindow::Invalidate(const nsIntRect & aRect)
{
if (mWnd)
{
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpInvalidate(stdout,
this,
&aRect,
nsCAutoString("noname"),
(PRInt32) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
RECT rect;
rect.left = aRect.x;
rect.top = aRect.y;
rect.right = aRect.x + aRect.width;
rect.bottom = aRect.y + aRect.height;
VERIFY(::InvalidateRect(mWnd, &rect, FALSE));
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::MakeFullScreen(bool aFullScreen)
{
// taskbarInfo will be NULL pre Windows 7 until Bug 680227 is resolved.
nsCOMPtr<nsIWinTaskbar> taskbarInfo =
do_GetService(NS_TASKBAR_CONTRACTID);
mFullscreenMode = aFullScreen;
if (aFullScreen) {
if (mSizeMode == nsSizeMode_Fullscreen)
return NS_OK;
mOldSizeMode = mSizeMode;
SetSizeMode(nsSizeMode_Fullscreen);
// Notify the taskbar that we will be entering full screen mode.
if (taskbarInfo) {
taskbarInfo->PrepareFullScreenHWND(mWnd, TRUE);
}
} else {
SetSizeMode(mOldSizeMode);
}
UpdateNonClientMargins();
bool visible = mIsVisible;
if (mOldSizeMode == nsSizeMode_Normal)
Show(false);
// Will call hide chrome, reposition window. Note this will
// also cache dimensions for restoration, so it should only
// be called once per fullscreen request.
nsresult rv = nsBaseWidget::MakeFullScreen(aFullScreen);
if (visible) {
Show(true);
Invalidate();
}
// Notify the taskbar that we have exited full screen mode.
if (!aFullScreen && taskbarInfo) {
taskbarInfo->PrepareFullScreenHWND(mWnd, FALSE);
}
// Let the dom know via web shell window
nsSizeModeEvent event(true, NS_SIZEMODE, this);
event.mSizeMode = mSizeMode;
InitEvent(event);
DispatchWindowEvent(&event);
return rv;
}
/**************************************************************
*
* SECTION: Native data storage
*
* nsIWidget::GetNativeData
* nsIWidget::FreeNativeData
*
* Set or clear native data based on a constant.
*
**************************************************************/
// Return some native data according to aDataType
void* nsWindow::GetNativeData(PRUint32 aDataType)
{
nsAutoString className;
switch (aDataType) {
case NS_NATIVE_TMP_WINDOW:
GetWindowClass(className);
return (void*)::CreateWindowExW(mIsRTL ? WS_EX_LAYOUTRTL : 0,
className.get(),
L"",
WS_CHILD,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
mWnd,
NULL,
nsToolkit::mDllInstance,
NULL);
case NS_NATIVE_PLUGIN_PORT:
case NS_NATIVE_WIDGET:
case NS_NATIVE_WINDOW:
case NS_NATIVE_SHAREABLE_WINDOW:
return (void*)mWnd;
case NS_NATIVE_GRAPHIC:
// XXX: This is sleezy!! Remember to Release the DC after using it!
#ifdef MOZ_XUL
return (void*)(eTransparencyTransparent == mTransparencyMode) ?
mMemoryDC : ::GetDC(mWnd);
#else
return (void*)::GetDC(mWnd);
#endif
#ifdef NS_ENABLE_TSF
case NS_NATIVE_TSF_THREAD_MGR:
return nsTextStore::GetThreadMgr();
case NS_NATIVE_TSF_CATEGORY_MGR:
return nsTextStore::GetCategoryMgr();
case NS_NATIVE_TSF_DISPLAY_ATTR_MGR:
return nsTextStore::GetDisplayAttrMgr();
#endif //NS_ENABLE_TSF
default:
break;
}
return NULL;
}
// Free some native data according to aDataType
void nsWindow::FreeNativeData(void * data, PRUint32 aDataType)
{
switch (aDataType)
{
case NS_NATIVE_GRAPHIC:
#ifdef MOZ_XUL
if (eTransparencyTransparent != mTransparencyMode)
::ReleaseDC(mWnd, (HDC)data);
#else
::ReleaseDC(mWnd, (HDC)data);
#endif
break;
case NS_NATIVE_WIDGET:
case NS_NATIVE_WINDOW:
case NS_NATIVE_PLUGIN_PORT:
break;
default:
break;
}
}
/**************************************************************
*
* SECTION: nsIWidget::SetTitle
*
* Set the main windows title text.
*
**************************************************************/
NS_METHOD nsWindow::SetTitle(const nsAString& aTitle)
{
const nsString& strTitle = PromiseFlatString(aTitle);
::SendMessageW(mWnd, WM_SETTEXT, (WPARAM)0, (LPARAM)(LPCWSTR)strTitle.get());
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::SetIcon
*
* Set the main windows icon.
*
**************************************************************/
NS_METHOD nsWindow::SetIcon(const nsAString& aIconSpec)
{
// Assume the given string is a local identifier for an icon file.
nsCOMPtr<nsILocalFile> iconFile;
ResolveIconName(aIconSpec, NS_LITERAL_STRING(".ico"),
getter_AddRefs(iconFile));
if (!iconFile)
return NS_OK; // not an error if icon is not found
nsAutoString iconPath;
iconFile->GetPath(iconPath);
// XXX this should use MZLU (see bug 239279)
::SetLastError(0);
HICON bigIcon = (HICON)::LoadImageW(NULL,
(LPCWSTR)iconPath.get(),
IMAGE_ICON,
::GetSystemMetrics(SM_CXICON),
::GetSystemMetrics(SM_CYICON),
LR_LOADFROMFILE );
HICON smallIcon = (HICON)::LoadImageW(NULL,
(LPCWSTR)iconPath.get(),
IMAGE_ICON,
::GetSystemMetrics(SM_CXSMICON),
::GetSystemMetrics(SM_CYSMICON),
LR_LOADFROMFILE );
if (bigIcon) {
HICON icon = (HICON) ::SendMessageW(mWnd, WM_SETICON, (WPARAM)ICON_BIG, (LPARAM)bigIcon);
if (icon)
::DestroyIcon(icon);
}
#ifdef DEBUG_SetIcon
else {
NS_LossyConvertUTF16toASCII cPath(iconPath);
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("\nIcon load error; icon=%s, rc=0x%08X\n\n",
cPath.get(), ::GetLastError()));
}
#endif
if (smallIcon) {
HICON icon = (HICON) ::SendMessageW(mWnd, WM_SETICON, (WPARAM)ICON_SMALL, (LPARAM)smallIcon);
if (icon)
::DestroyIcon(icon);
}
#ifdef DEBUG_SetIcon
else {
NS_LossyConvertUTF16toASCII cPath(iconPath);
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("\nSmall icon load error; icon=%s, rc=0x%08X\n\n",
cPath.get(), ::GetLastError()));
}
#endif
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::WidgetToScreenOffset
*
* Return this widget's origin in screen coordinates.
*
**************************************************************/
nsIntPoint nsWindow::WidgetToScreenOffset()
{
POINT point;
point.x = 0;
point.y = 0;
::ClientToScreen(mWnd, &point);
return nsIntPoint(point.x, point.y);
}
nsIntSize nsWindow::ClientToWindowSize(const nsIntSize& aClientSize)
{
if (!IsPopupWithTitleBar())
return aClientSize;
// just use (200, 200) as the position
RECT r;
r.left = 200;
r.top = 200;
r.right = 200 + aClientSize.width;
r.bottom = 200 + aClientSize.height;
::AdjustWindowRectEx(&r, WindowStyle(), false, WindowExStyle());
return nsIntSize(r.right - r.left, r.bottom - r.top);
}
/**************************************************************
*
* SECTION: nsIWidget::EnableDragDrop
*
* Enables/Disables drag and drop of files on this widget.
*
**************************************************************/
NS_METHOD nsWindow::EnableDragDrop(bool aEnable)
{
NS_ASSERTION(mWnd, "nsWindow::EnableDragDrop() called after Destroy()");
nsresult rv = NS_ERROR_FAILURE;
if (aEnable) {
if (nsnull == mNativeDragTarget) {
mNativeDragTarget = new nsNativeDragTarget(this);
if (NULL != mNativeDragTarget) {
mNativeDragTarget->AddRef();
if (S_OK == ::CoLockObjectExternal((LPUNKNOWN)mNativeDragTarget,TRUE,FALSE)) {
if (S_OK == ::RegisterDragDrop(mWnd, (LPDROPTARGET)mNativeDragTarget)) {
rv = NS_OK;
}
}
}
}
} else {
if (nsnull != mWnd && NULL != mNativeDragTarget) {
::RevokeDragDrop(mWnd);
if (S_OK == ::CoLockObjectExternal((LPUNKNOWN)mNativeDragTarget, FALSE, TRUE)) {
rv = NS_OK;
}
mNativeDragTarget->DragCancel();
NS_RELEASE(mNativeDragTarget);
}
}
return rv;
}
/**************************************************************
*
* SECTION: nsIWidget::CaptureMouse
*
* Enables/Disables system mouse capture.
*
**************************************************************/
NS_METHOD nsWindow::CaptureMouse(bool aCapture)
{
if (!nsToolkit::gMouseTrailer) {
NS_ERROR("nsWindow::CaptureMouse called after nsToolkit destroyed");
return NS_OK;
}
if (aCapture) {
nsToolkit::gMouseTrailer->SetCaptureWindow(mWnd);
::SetCapture(mWnd);
} else {
nsToolkit::gMouseTrailer->SetCaptureWindow(NULL);
::ReleaseCapture();
}
sIsInMouseCapture = aCapture;
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::CaptureRollupEvents
*
* Dealing with event rollup on destroy for popups. Enables &
* Disables system capture of any and all events that would
* cause a dropdown to be rolled up.
*
**************************************************************/
NS_IMETHODIMP nsWindow::CaptureRollupEvents(nsIRollupListener * aListener,
bool aDoCapture,
bool aConsumeRollupEvent)
{
if (aDoCapture) {
/* we haven't bothered carrying a weak reference to sRollupWidget because
we believe lifespan is properly scoped. this next assertion helps
assure that remains true. */
NS_ASSERTION(!sRollupWidget, "rollup widget reassigned before release");
sRollupConsumeEvent = aConsumeRollupEvent;
NS_IF_RELEASE(sRollupWidget);
sRollupListener = aListener;
sRollupWidget = this;
NS_ADDREF(this);
if (!sMsgFilterHook && !sCallProcHook && !sCallMouseHook) {
RegisterSpecialDropdownHooks();
}
sProcessHook = true;
} else {
sRollupListener = nsnull;
NS_IF_RELEASE(sRollupWidget);
sProcessHook = false;
UnregisterSpecialDropdownHooks();
}
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::GetAttention
*
* Bring this window to the user's attention.
*
**************************************************************/
// Draw user's attention to this window until it comes to foreground.
NS_IMETHODIMP
nsWindow::GetAttention(PRInt32 aCycleCount)
{
// Got window?
if (!mWnd)
return NS_ERROR_NOT_INITIALIZED;
HWND flashWnd = WinUtils::GetTopLevelHWND(mWnd, false, false);
HWND fgWnd = ::GetForegroundWindow();
// Don't flash if the flash count is 0 or if the foreground window is our
// window handle or that of our owned-most window.
if (aCycleCount == 0 ||
flashWnd == fgWnd ||
flashWnd == WinUtils::GetTopLevelHWND(fgWnd, false, false)) {
return NS_OK;
}
DWORD defaultCycleCount = 0;
::SystemParametersInfo(SPI_GETFOREGROUNDFLASHCOUNT, 0, &defaultCycleCount, 0);
FLASHWINFO flashInfo = { sizeof(FLASHWINFO), flashWnd,
FLASHW_ALL, aCycleCount > 0 ? aCycleCount : defaultCycleCount, 0 };
::FlashWindowEx(&flashInfo);
return NS_OK;
}
void nsWindow::StopFlashing()
{
HWND flashWnd = mWnd;
while (HWND ownerWnd = ::GetWindow(flashWnd, GW_OWNER)) {
flashWnd = ownerWnd;
}
FLASHWINFO flashInfo = { sizeof(FLASHWINFO), flashWnd,
FLASHW_STOP, 0, 0 };
::FlashWindowEx(&flashInfo);
}
/**************************************************************
*
* SECTION: nsIWidget::HasPendingInputEvent
*
* Ask whether there user input events pending. All input events are
* included, including those not targeted at this nsIwidget instance.
*
**************************************************************/
bool
nsWindow::HasPendingInputEvent()
{
// If there is pending input or the user is currently
// moving the window then return true.
// Note: When the user is moving the window WIN32 spins
// a separate event loop and input events are not
// reported to the application.
if (HIWORD(GetQueueStatus(QS_INPUT)))
return true;
GUITHREADINFO guiInfo;
guiInfo.cbSize = sizeof(GUITHREADINFO);
if (!GetGUIThreadInfo(GetCurrentThreadId(), &guiInfo))
return false;
return GUI_INMOVESIZE == (guiInfo.flags & GUI_INMOVESIZE);
}
/**************************************************************
*
* SECTION: nsIWidget::GetLayerManager
*
* Get the layer manager associated with this widget.
*
**************************************************************/
struct LayerManagerPrefs {
LayerManagerPrefs()
: mAccelerateByDefault(true)
, mDisableAcceleration(false)
, mPreferOpenGL(false)
, mPreferD3D9(false)
{}
bool mAccelerateByDefault;
bool mDisableAcceleration;
bool mForceAcceleration;
bool mPreferOpenGL;
bool mPreferD3D9;
};
static void
GetLayerManagerPrefs(LayerManagerPrefs* aManagerPrefs)
{
Preferences::GetBool("layers.acceleration.disabled",
&aManagerPrefs->mDisableAcceleration);
Preferences::GetBool("layers.acceleration.force-enabled",
&aManagerPrefs->mForceAcceleration);
Preferences::GetBool("layers.prefer-opengl",
&aManagerPrefs->mPreferOpenGL);
Preferences::GetBool("layers.prefer-d3d9",
&aManagerPrefs->mPreferD3D9);
const char *acceleratedEnv = PR_GetEnv("MOZ_ACCELERATED");
aManagerPrefs->mAccelerateByDefault =
aManagerPrefs->mAccelerateByDefault ||
(acceleratedEnv && (*acceleratedEnv != '0'));
bool safeMode = false;
nsCOMPtr<nsIXULRuntime> xr = do_GetService("@mozilla.org/xre/runtime;1");
if (xr)
xr->GetInSafeMode(&safeMode);
aManagerPrefs->mDisableAcceleration =
aManagerPrefs->mDisableAcceleration || safeMode;
}
LayerManager*
nsWindow::GetLayerManager(PLayersChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence,
bool* aAllowRetaining)
{
if (aAllowRetaining) {
*aAllowRetaining = true;
}
#ifdef MOZ_ENABLE_D3D10_LAYER
if (mLayerManager) {
if (mLayerManager->GetBackendType() ==
mozilla::layers::LayerManager::LAYERS_D3D10)
{
mozilla::layers::LayerManagerD3D10 *layerManagerD3D10 =
static_cast<mozilla::layers::LayerManagerD3D10*>(mLayerManager.get());
if (layerManagerD3D10->device() !=
gfxWindowsPlatform::GetPlatform()->GetD3D10Device())
{
mLayerManager->Destroy();
mLayerManager = nsnull;
}
}
}
#endif
RECT windowRect;
::GetClientRect(mWnd, &windowRect);
if (!mLayerManager ||
(!sAllowD3D9 && aPersistence == LAYER_MANAGER_PERSISTENT &&
mLayerManager->GetBackendType() ==
mozilla::layers::LayerManager::LAYERS_BASIC)) {
// If D3D9 is not currently allowed but the permanent manager is required,
// -and- we're currently using basic layers, run through this check.
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
/* We don't currently support using an accelerated layer manager with
* transparent windows so don't even try. I'm also not sure if we even
* want to support this case. See bug #593471 */
if (eTransparencyTransparent == mTransparencyMode ||
prefs.mDisableAcceleration ||
windowRect.right - windowRect.left > MAX_ACCELERATED_DIMENSION ||
windowRect.bottom - windowRect.top > MAX_ACCELERATED_DIMENSION)
mUseAcceleratedRendering = false;
else if (prefs.mAccelerateByDefault)
mUseAcceleratedRendering = true;
if (mUseAcceleratedRendering) {
if (aPersistence == LAYER_MANAGER_PERSISTENT && !sAllowD3D9) {
// This will clear out our existing layer manager if we have one since
// if we hit this with a LayerManager we're always using BasicLayers.
nsToolkit::StartAllowingD3D9();
}
#ifdef MOZ_ENABLE_D3D10_LAYER
if (!prefs.mPreferD3D9 && !prefs.mPreferOpenGL) {
nsRefPtr<mozilla::layers::LayerManagerD3D10> layerManager =
new mozilla::layers::LayerManagerD3D10(this);
if (layerManager->Initialize(prefs.mForceAcceleration)) {
mLayerManager = layerManager;
}
}
#endif
#ifdef MOZ_ENABLE_D3D9_LAYER
if (!prefs.mPreferOpenGL && !mLayerManager && sAllowD3D9) {
nsRefPtr<mozilla::layers::LayerManagerD3D9> layerManager =
new mozilla::layers::LayerManagerD3D9(this);
if (layerManager->Initialize(prefs.mForceAcceleration)) {
mLayerManager = layerManager;
}
}
#endif
if (!mLayerManager && prefs.mPreferOpenGL) {
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
PRInt32 status = nsIGfxInfo::FEATURE_NO_INFO;
if (gfxInfo && !prefs.mForceAcceleration) {
gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_OPENGL_LAYERS, &status);
}
if (status == nsIGfxInfo::FEATURE_NO_INFO) {
nsRefPtr<mozilla::layers::LayerManagerOGL> layerManager =
new mozilla::layers::LayerManagerOGL(this);
if (layerManager->Initialize()) {
mLayerManager = layerManager;
}
} else {
NS_WARNING("OpenGL accelerated layers are not supported on this system.");
}
}
}
// Fall back to software if we couldn't use any hardware backends.
if (!mLayerManager)
mLayerManager = CreateBasicLayerManager();
}
NS_ASSERTION(mLayerManager, "Couldn't provide a valid layer manager.");
return mLayerManager;
}
/**************************************************************
*
* SECTION: nsIWidget::GetThebesSurface
*
* Get the Thebes surface associated with this widget.
*
**************************************************************/
gfxASurface *nsWindow::GetThebesSurface()
{
#ifdef CAIRO_HAS_D2D_SURFACE
if (mD2DWindowSurface) {
return mD2DWindowSurface;
}
#endif
if (mPaintDC)
return (new gfxWindowsSurface(mPaintDC));
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
gfxASurface::gfxContentType content = gfxASurface::CONTENT_COLOR;
#if defined(MOZ_XUL)
if (mTransparencyMode != eTransparencyOpaque) {
content = gfxASurface::CONTENT_COLOR_ALPHA;
}
#endif
return (new gfxD2DSurface(mWnd, content));
} else {
#endif
PRUint32 flags = gfxWindowsSurface::FLAG_TAKE_DC;
if (mTransparencyMode != eTransparencyOpaque) {
flags |= gfxWindowsSurface::FLAG_IS_TRANSPARENT;
}
return (new gfxWindowsSurface(mWnd, flags));
#ifdef CAIRO_HAS_D2D_SURFACE
}
#endif
}
/**************************************************************
*
* SECTION: nsIWidget::OnDefaultButtonLoaded
*
* Called after the dialog is loaded and it has a default button.
*
**************************************************************/
NS_IMETHODIMP
nsWindow::OnDefaultButtonLoaded(const nsIntRect &aButtonRect)
{
if (aButtonRect.IsEmpty())
return NS_OK;
// Don't snap when we are not active.
HWND activeWnd = ::GetActiveWindow();
if (activeWnd != ::GetForegroundWindow() ||
WinUtils::GetTopLevelHWND(mWnd, true) !=
WinUtils::GetTopLevelHWND(activeWnd, true)) {
return NS_OK;
}
bool isAlwaysSnapCursor =
Preferences::GetBool("ui.cursor_snapping.always_enabled", false);
if (!isAlwaysSnapCursor) {
BOOL snapDefaultButton;
if (!::SystemParametersInfo(SPI_GETSNAPTODEFBUTTON, 0,
&snapDefaultButton, 0) || !snapDefaultButton)
return NS_OK;
}
nsIntRect widgetRect;
nsresult rv = GetScreenBounds(widgetRect);
NS_ENSURE_SUCCESS(rv, rv);
nsIntRect buttonRect(aButtonRect + widgetRect.TopLeft());
nsIntPoint centerOfButton(buttonRect.x + buttonRect.width / 2,
buttonRect.y + buttonRect.height / 2);
// The center of the button can be outside of the widget.
// E.g., it could be hidden by scrolling.
if (!widgetRect.Contains(centerOfButton)) {
return NS_OK;
}
if (!::SetCursorPos(centerOfButton.x, centerOfButton.y)) {
NS_ERROR("SetCursorPos failed");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
nsWindow::OverrideSystemMouseScrollSpeed(PRInt32 aOriginalDelta,
bool aIsHorizontal,
PRInt32 &aOverriddenDelta)
{
// The default vertical and horizontal scrolling speed is 3, this is defined
// on the document of SystemParametersInfo in MSDN.
const PRUint32 kSystemDefaultScrollingSpeed = 3;
PRInt32 absOriginDelta = NS_ABS(aOriginalDelta);
// Compute the simple overridden speed.
PRInt32 absComputedOverriddenDelta;
nsresult rv =
nsBaseWidget::OverrideSystemMouseScrollSpeed(absOriginDelta, aIsHorizontal,
absComputedOverriddenDelta);
NS_ENSURE_SUCCESS(rv, rv);
aOverriddenDelta = aOriginalDelta;
if (absComputedOverriddenDelta == absOriginDelta) {
// We don't override now.
return NS_OK;
}
// Otherwise, we should check whether the user customized the system settings
// or not. If the user did it, we should respect the will.
UINT systemSpeed;
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0, &systemSpeed, 0)) {
return NS_ERROR_FAILURE;
}
// The default vertical scrolling speed is 3, this is defined on the document
// of SystemParametersInfo in MSDN.
if (systemSpeed != kSystemDefaultScrollingSpeed) {
return NS_OK;
}
// Only Vista and later, Windows has the system setting of horizontal
// scrolling by the mouse wheel.
if (WinUtils::GetWindowsVersion() >= WinUtils::VISTA_VERSION) {
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS, 0, &systemSpeed, 0)) {
return NS_ERROR_FAILURE;
}
// The default horizontal scrolling speed is 3, this is defined on the
// document of SystemParametersInfo in MSDN.
if (systemSpeed != kSystemDefaultScrollingSpeed) {
return NS_OK;
}
}
// Limit the overridden delta value from the system settings. The mouse
// driver might accelerate the scrolling speed already. If so, we shouldn't
// override the scrolling speed for preventing the unexpected high speed
// scrolling.
PRInt32 absDeltaLimit;
rv =
nsBaseWidget::OverrideSystemMouseScrollSpeed(kSystemDefaultScrollingSpeed,
aIsHorizontal, absDeltaLimit);
NS_ENSURE_SUCCESS(rv, rv);
// If the given delta is larger than our computed limitation value, the delta
// was accelerated by the mouse driver. So, we should do nothing here.
if (absDeltaLimit <= absOriginDelta) {
return NS_OK;
}
absComputedOverriddenDelta =
NS_MIN(absComputedOverriddenDelta, absDeltaLimit);
aOverriddenDelta = (aOriginalDelta > 0) ? absComputedOverriddenDelta :
-absComputedOverriddenDelta;
return NS_OK;
}
/**************************************************************
**************************************************************
**
** BLOCK: Moz Events
**
** Moz GUI event management.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: Mozilla event initialization
*
* Helpers for initializing moz events.
*
**************************************************************/
// Event intialization
void nsWindow::InitEvent(nsGUIEvent& event, nsIntPoint* aPoint)
{
if (nsnull == aPoint) { // use the point from the event
// get the message position in client coordinates
if (mWnd != NULL) {
DWORD pos = ::GetMessagePos();
POINT cpos;
cpos.x = GET_X_LPARAM(pos);
cpos.y = GET_Y_LPARAM(pos);
::ScreenToClient(mWnd, &cpos);
event.refPoint.x = cpos.x;
event.refPoint.y = cpos.y;
} else {
event.refPoint.x = 0;
event.refPoint.y = 0;
}
}
else {
// use the point override if provided
event.refPoint.x = aPoint->x;
event.refPoint.y = aPoint->y;
}
event.time = ::GetMessageTime();
mLastPoint = event.refPoint;
}
/**************************************************************
*
* SECTION: Moz event dispatch helpers
*
* Helpers for dispatching different types of moz events.
*
**************************************************************/
// Main event dispatch. Invokes callback and ProcessEvent method on
// Event Listener object. Part of nsIWidget.
NS_IMETHODIMP nsWindow::DispatchEvent(nsGUIEvent* event, nsEventStatus & aStatus)
{
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpEvent(stdout,
event->widget,
event,
nsCAutoString("something"),
(PRInt32) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
aStatus = nsEventStatus_eIgnore;
// skip processing of suppressed blur events
if (event->message == NS_DEACTIVATE && BlurEventsSuppressed())
return NS_OK;
// Top level windows can have a view attached which requires events be sent
// to the underlying base window and the view. Added when we combined the
// base chrome window with the main content child for nc client area (title
// bar) rendering.
if (mViewCallback) {
// A subset of events are sent to the base xul window first
switch(event->message) {
// sent to the base window, then to the view
case NS_SIZE:
case NS_DEACTIVATE:
case NS_ACTIVATE:
case NS_SIZEMODE:
case NS_UISTATECHANGED:
case NS_DESTROY:
case NS_SETZLEVEL:
case NS_XUL_CLOSE:
case NS_MOVE:
(*mEventCallback)(event); // web shell / xul window
break;
};
// attached view events
aStatus = (*mViewCallback)(event);
}
else if (mEventCallback) {
aStatus = (*mEventCallback)(event);
}
// the window can be destroyed during processing of seemingly innocuous events like, say,
// mousedowns due to the magic of scripting. mousedowns will return nsEventStatus_eIgnore,
// which causes problems with the deleted window. therefore:
if (mOnDestroyCalled)
aStatus = nsEventStatus_eConsumeNoDefault;
return NS_OK;
}
bool nsWindow::DispatchStandardEvent(PRUint32 aMsg)
{
nsGUIEvent event(true, aMsg, this);
InitEvent(event);
bool result = DispatchWindowEvent(&event);
return result;
}
bool nsWindow::DispatchWindowEvent(nsGUIEvent* event)
{
nsEventStatus status;
DispatchEvent(event, status);
return ConvertStatus(status);
}
bool nsWindow::DispatchWindowEvent(nsGUIEvent* event, nsEventStatus &aStatus) {
DispatchEvent(event, aStatus);
return ConvertStatus(aStatus);
}
bool nsWindow::DispatchKeyEvent(PRUint32 aEventType, WORD aCharCode,
const nsTArray<nsAlternativeCharCode>* aAlternativeCharCodes,
UINT aVirtualCharCode, const MSG *aMsg,
const nsModifierKeyState &aModKeyState,
PRUint32 aFlags)
{
UserActivity();
nsKeyEvent event(true, aEventType, this);
nsIntPoint point(0, 0);
InitEvent(event, &point); // this add ref's event.widget
event.flags |= aFlags;
event.charCode = aCharCode;
if (aAlternativeCharCodes)
event.alternativeCharCodes.AppendElements(*aAlternativeCharCodes);
event.keyCode = aVirtualCharCode;
#ifdef KE_DEBUG
static cnt=0;
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("%d DispatchKE Type: %s charCode %d keyCode %d ", cnt++,
NS_KEY_PRESS == aEventType ? "PRESS :
(aEventType == NS_KEY_UP ? "Up" : "Down"),
event.charCode, event.keyCode));
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("Shift: %s Control %s Alt: %s \n", (mIsShiftDown ? "D" : "U"),
(mIsControlDown ? "D" : "U"), (mIsAltDown ? "D" : "U")));
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("[%c][%c][%c] <== [%c][%c][%c][ space bar ][%c][%c][%c]\n",
IS_VK_DOWN(NS_VK_SHIFT) ? 'S' : ' ',
IS_VK_DOWN(NS_VK_CONTROL) ? 'C' : ' ',
IS_VK_DOWN(NS_VK_ALT) ? 'A' : ' ',
IS_VK_DOWN(VK_LSHIFT) ? 'S' : ' ',
IS_VK_DOWN(VK_LCONTROL) ? 'C' : ' ',
IS_VK_DOWN(VK_LMENU) ? 'A' : ' ',
IS_VK_DOWN(VK_RMENU) ? 'A' : ' ',
IS_VK_DOWN(VK_RCONTROL) ? 'C' : ' ',
IS_VK_DOWN(VK_RSHIFT) ? 'S' : ' '));
#endif
event.isShift = aModKeyState.mIsShiftDown;
event.isControl = aModKeyState.mIsControlDown;
event.isMeta = false;
event.isAlt = aModKeyState.mIsAltDown;
NPEvent pluginEvent;
if (aMsg && PluginHasFocus()) {
pluginEvent.event = aMsg->message;
pluginEvent.wParam = aMsg->wParam;
pluginEvent.lParam = aMsg->lParam;
event.pluginEvent = (void *)&pluginEvent;
}
bool result = DispatchWindowEvent(&event);
return result;
}
bool nsWindow::DispatchCommandEvent(PRUint32 aEventCommand)
{
nsCOMPtr<nsIAtom> command;
switch (aEventCommand) {
case APPCOMMAND_BROWSER_BACKWARD:
command = nsGkAtoms::Back;
break;
case APPCOMMAND_BROWSER_FORWARD:
command = nsGkAtoms::Forward;
break;
case APPCOMMAND_BROWSER_REFRESH:
command = nsGkAtoms::Reload;
break;
case APPCOMMAND_BROWSER_STOP:
command = nsGkAtoms::Stop;
break;
case APPCOMMAND_BROWSER_SEARCH:
command = nsGkAtoms::Search;
break;
case APPCOMMAND_BROWSER_FAVORITES:
command = nsGkAtoms::Bookmarks;
break;
case APPCOMMAND_BROWSER_HOME:
command = nsGkAtoms::Home;
break;
default:
return false;
}
nsCommandEvent event(true, nsGkAtoms::onAppCommand, command, this);
InitEvent(event);
DispatchWindowEvent(&event);
return true;
}
// Recursively dispatch synchronous paints for nsIWidget
// descendants with invalidated rectangles.
BOOL CALLBACK nsWindow::DispatchStarvedPaints(HWND aWnd, LPARAM aMsg)
{
LONG_PTR proc = ::GetWindowLongPtrW(aWnd, GWLP_WNDPROC);
if (proc == (LONG_PTR)&nsWindow::WindowProc) {
// its one of our windows so check to see if it has a
// invalidated rect. If it does. Dispatch a synchronous
// paint.
if (GetUpdateRect(aWnd, NULL, FALSE))
VERIFY(::UpdateWindow(aWnd));
}
return TRUE;
}
// Check for pending paints and dispatch any pending paint
// messages for any nsIWidget which is a descendant of the
// top-level window that *this* window is embedded within.
//
// Note: We do not dispatch pending paint messages for non
// nsIWidget managed windows.
void nsWindow::DispatchPendingEvents()
{
if (mPainting) {
NS_WARNING("We were asked to dispatch pending events during painting, "
"denying since that's unsafe.");
return;
}
// We need to ensure that reflow events do not get starved.
// At the same time, we don't want to recurse through here
// as that would prevent us from dispatching starved paints.
static int recursionBlocker = 0;
if (recursionBlocker++ == 0) {
NS_ProcessPendingEvents(nsnull, PR_MillisecondsToInterval(100));
--recursionBlocker;
}
// Quickly check to see if there are any paint events pending,
// but only dispatch them if it has been long enough since the
// last paint completed.
if (::GetQueueStatus(QS_PAINT) &&
((TimeStamp::Now() - mLastPaintEndTime).ToMilliseconds() >= 50)) {
// Find the top level window.
HWND topWnd = WinUtils::GetTopLevelHWND(mWnd);
// Dispatch pending paints for topWnd and all its descendant windows.
// Note: EnumChildWindows enumerates all descendant windows not just
// the children (but not the window itself).
nsWindow::DispatchStarvedPaints(topWnd, 0);
::EnumChildWindows(topWnd, nsWindow::DispatchStarvedPaints, 0);
}
}
// Deal with plugin events
bool nsWindow::DispatchPluginEvent(const MSG &aMsg)
{
if (!PluginHasFocus())
return false;
nsPluginEvent event(true, NS_PLUGIN_INPUT_EVENT, this);
nsIntPoint point(0, 0);
InitEvent(event, &point);
NPEvent pluginEvent;
pluginEvent.event = aMsg.message;
pluginEvent.wParam = aMsg.wParam;
pluginEvent.lParam = aMsg.lParam;
event.pluginEvent = (void *)&pluginEvent;
event.retargetToFocusedDocument = true;
return DispatchWindowEvent(&event);
}
bool nsWindow::DispatchPluginEvent(UINT aMessage,
WPARAM aWParam,
LPARAM aLParam,
bool aDispatchPendingEvents)
{
bool ret = DispatchPluginEvent(WinUtils::InitMSG(aMessage, aWParam, aLParam));
if (aDispatchPendingEvents) {
DispatchPendingEvents();
}
return ret;
}
void nsWindow::RemoveMessageAndDispatchPluginEvent(UINT aFirstMsg,
UINT aLastMsg, nsFakeCharMessage* aFakeCharMessage)
{
MSG msg;
if (aFakeCharMessage) {
if (aFirstMsg > WM_CHAR || aLastMsg < WM_CHAR) {
return;
}
msg = aFakeCharMessage->GetCharMessage(mWnd);
} else {
::GetMessageW(&msg, mWnd, aFirstMsg, aLastMsg);
}
DispatchPluginEvent(msg);
}
// Deal with all sort of mouse event
bool nsWindow::DispatchMouseEvent(PRUint32 aEventType, WPARAM wParam,
LPARAM lParam, bool aIsContextMenuKey,
PRInt16 aButton, PRUint16 aInputSource)
{
bool result = false;
UserActivity();
if (!mEventCallback) {
return result;
}
switch (aEventType) {
case NS_MOUSE_BUTTON_DOWN:
CaptureMouse(true);
break;
// NS_MOUSE_MOVE and NS_MOUSE_EXIT are here because we need to make sure capture flag
// isn't left on after a drag where we wouldn't see a button up message (see bug 324131).
case NS_MOUSE_BUTTON_UP:
case NS_MOUSE_MOVE:
case NS_MOUSE_EXIT:
if (!(wParam & (MK_LBUTTON | MK_MBUTTON | MK_RBUTTON)) && sIsInMouseCapture)
CaptureMouse(false);
break;
default:
break;
} // switch
nsIntPoint eventPoint;
eventPoint.x = GET_X_LPARAM(lParam);
eventPoint.y = GET_Y_LPARAM(lParam);
nsMouseEvent event(true, aEventType, this, nsMouseEvent::eReal,
aIsContextMenuKey
? nsMouseEvent::eContextMenuKey
: nsMouseEvent::eNormal);
if (aEventType == NS_CONTEXTMENU && aIsContextMenuKey) {
nsIntPoint zero(0, 0);
InitEvent(event, &zero);
} else {
InitEvent(event, &eventPoint);
}
event.isShift = IS_VK_DOWN(NS_VK_SHIFT);
event.isControl = IS_VK_DOWN(NS_VK_CONTROL);
event.isMeta = false;
event.isAlt = IS_VK_DOWN(NS_VK_ALT);
event.button = aButton;
event.inputSource = aInputSource;
nsIntPoint mpScreen = eventPoint + WidgetToScreenOffset();
// Suppress mouse moves caused by widget creation
if (aEventType == NS_MOUSE_MOVE)
{
if ((sLastMouseMovePoint.x == mpScreen.x) && (sLastMouseMovePoint.y == mpScreen.y))
return result;
sLastMouseMovePoint.x = mpScreen.x;
sLastMouseMovePoint.y = mpScreen.y;
}
bool insideMovementThreshold = (abs(sLastMousePoint.x - eventPoint.x) < (short)::GetSystemMetrics(SM_CXDOUBLECLK)) &&
(abs(sLastMousePoint.y - eventPoint.y) < (short)::GetSystemMetrics(SM_CYDOUBLECLK));
BYTE eventButton;
switch (aButton) {
case nsMouseEvent::eLeftButton:
eventButton = VK_LBUTTON;
break;
case nsMouseEvent::eMiddleButton:
eventButton = VK_MBUTTON;
break;
case nsMouseEvent::eRightButton:
eventButton = VK_RBUTTON;
break;
default:
eventButton = 0;
break;
}
// Doubleclicks are used to set the click count, then changed to mousedowns
// We're going to time double-clicks from mouse *up* to next mouse *down*
LONG curMsgTime = ::GetMessageTime();
if (aEventType == NS_MOUSE_DOUBLECLICK) {
event.message = NS_MOUSE_BUTTON_DOWN;
event.button = aButton;
sLastClickCount = 2;
}
else if (aEventType == NS_MOUSE_BUTTON_UP) {
// remember when this happened for the next mouse down
sLastMousePoint.x = eventPoint.x;
sLastMousePoint.y = eventPoint.y;
sLastMouseButton = eventButton;
}
else if (aEventType == NS_MOUSE_BUTTON_DOWN) {
// now look to see if we want to convert this to a double- or triple-click
if (((curMsgTime - sLastMouseDownTime) < (LONG)::GetDoubleClickTime()) && insideMovementThreshold &&
eventButton == sLastMouseButton) {
sLastClickCount ++;
} else {
// reset the click count, to count *this* click
sLastClickCount = 1;
}
// Set last Click time on MouseDown only
sLastMouseDownTime = curMsgTime;
}
else if (aEventType == NS_MOUSE_MOVE && !insideMovementThreshold) {
sLastClickCount = 0;
}
else if (aEventType == NS_MOUSE_EXIT) {
event.exit = IsTopLevelMouseExit(mWnd) ? nsMouseEvent::eTopLevel : nsMouseEvent::eChild;
}
else if (aEventType == NS_MOUSE_MOZHITTEST)
{
event.flags |= NS_EVENT_FLAG_ONLY_CHROME_DISPATCH;
}
event.clickCount = sLastClickCount;
#ifdef NS_DEBUG_XX
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("Msg Time: %d Click Count: %d\n", curMsgTime, event.clickCount));
#endif
NPEvent pluginEvent;
switch (aEventType)
{
case NS_MOUSE_BUTTON_DOWN:
switch (aButton) {
case nsMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONDOWN;
break;
case nsMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONDOWN;
break;
case nsMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONDOWN;
break;
default:
break;
}
break;
case NS_MOUSE_BUTTON_UP:
switch (aButton) {
case nsMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONUP;
break;
case nsMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONUP;
break;
case nsMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONUP;
break;
default:
break;
}
break;
case NS_MOUSE_DOUBLECLICK:
switch (aButton) {
case nsMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONDBLCLK;
break;
case nsMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONDBLCLK;
break;
case nsMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONDBLCLK;
break;
default:
break;
}
break;
case NS_MOUSE_MOVE:
pluginEvent.event = WM_MOUSEMOVE;
break;
case NS_MOUSE_EXIT:
pluginEvent.event = WM_MOUSELEAVE;
break;
default:
pluginEvent.event = WM_NULL;
break;
}
pluginEvent.wParam = wParam; // plugins NEED raw OS event flags!
pluginEvent.lParam = lParam;
event.pluginEvent = (void *)&pluginEvent;
// call the event callback
if (nsnull != mEventCallback) {
if (nsToolkit::gMouseTrailer)
nsToolkit::gMouseTrailer->Disable();
if (aEventType == NS_MOUSE_MOVE) {
if (nsToolkit::gMouseTrailer && !sIsInMouseCapture) {
nsToolkit::gMouseTrailer->SetMouseTrailerWindow(mWnd);
}
nsIntRect rect;
GetBounds(rect);
rect.x = 0;
rect.y = 0;
if (rect.Contains(event.refPoint)) {
if (sCurrentWindow == NULL || sCurrentWindow != this) {
if ((nsnull != sCurrentWindow) && (!sCurrentWindow->mInDtor)) {
LPARAM pos = sCurrentWindow->lParamToClient(lParamToScreen(lParam));
sCurrentWindow->DispatchMouseEvent(NS_MOUSE_EXIT, wParam, pos, false,
nsMouseEvent::eLeftButton, aInputSource);
}
sCurrentWindow = this;
if (!mInDtor) {
LPARAM pos = sCurrentWindow->lParamToClient(lParamToScreen(lParam));
sCurrentWindow->DispatchMouseEvent(NS_MOUSE_ENTER, wParam, pos, false,
nsMouseEvent::eLeftButton, aInputSource);
}
}
}
} else if (aEventType == NS_MOUSE_EXIT) {
if (sCurrentWindow == this) {
sCurrentWindow = nsnull;
}
}
result = DispatchWindowEvent(&event);
if (nsToolkit::gMouseTrailer)
nsToolkit::gMouseTrailer->Enable();
// Release the widget with NS_IF_RELEASE() just in case
// the context menu key code in nsEventListenerManager::HandleEvent()
// released it already.
return result;
}
return result;
}
// Deal with accessibile event
#ifdef ACCESSIBILITY
nsAccessible*
nsWindow::DispatchAccessibleEvent(PRUint32 aEventType)
{
if (nsnull == mEventCallback) {
return nsnull;
}
nsAccessibleEvent event(true, aEventType, this);
InitEvent(event, nsnull);
event.isShift = IS_VK_DOWN(NS_VK_SHIFT);
event.isControl = IS_VK_DOWN(NS_VK_CONTROL);
event.isMeta = false;
event.isAlt = IS_VK_DOWN(NS_VK_ALT);
DispatchWindowEvent(&event);
return event.mAccessible;
}
#endif
bool nsWindow::DispatchFocusToTopLevelWindow(PRUint32 aEventType)
{
if (aEventType == NS_ACTIVATE)
sJustGotActivate = false;
sJustGotDeactivate = false;
// retrive the toplevel window or dialog
HWND curWnd = mWnd;
HWND toplevelWnd = NULL;
while (curWnd) {
toplevelWnd = curWnd;
nsWindow *win = WinUtils::GetNSWindowPtr(curWnd);
if (win) {
nsWindowType wintype;
win->GetWindowType(wintype);
if (wintype == eWindowType_toplevel || wintype == eWindowType_dialog)
break;
}
curWnd = ::GetParent(curWnd); // Parent or owner (if has no parent)
}
if (toplevelWnd) {
nsWindow *win = WinUtils::GetNSWindowPtr(toplevelWnd);
if (win)
return win->DispatchFocus(aEventType);
}
return false;
}
// Deal with focus messages
bool nsWindow::DispatchFocus(PRUint32 aEventType)
{
// call the event callback
if (mEventCallback) {
nsGUIEvent event(true, aEventType, this);
InitEvent(event);
//focus and blur event should go to their base widget loc, not current mouse pos
event.refPoint.x = 0;
event.refPoint.y = 0;
NPEvent pluginEvent;
switch (aEventType)
{
case NS_ACTIVATE:
pluginEvent.event = WM_SETFOCUS;
break;
case NS_DEACTIVATE:
pluginEvent.event = WM_KILLFOCUS;
break;
case NS_PLUGIN_ACTIVATE:
pluginEvent.event = WM_KILLFOCUS;
break;
default:
break;
}
event.pluginEvent = (void *)&pluginEvent;
return DispatchWindowEvent(&event);
}
return false;
}
bool nsWindow::IsTopLevelMouseExit(HWND aWnd)
{
DWORD pos = ::GetMessagePos();
POINT mp;
mp.x = GET_X_LPARAM(pos);
mp.y = GET_Y_LPARAM(pos);
HWND mouseWnd = ::WindowFromPoint(mp);
// WinUtils::GetTopLevelHWND() will return a HWND for the window frame
// (which includes the non-client area). If the mouse has moved into
// the non-client area, we should treat it as a top-level exit.
HWND mouseTopLevel = WinUtils::GetTopLevelHWND(mouseWnd);
if (mouseWnd == mouseTopLevel)
return true;
return WinUtils::GetTopLevelHWND(aWnd) != mouseTopLevel;
}
bool nsWindow::BlurEventsSuppressed()
{
// are they suppressed in this window?
if (mBlurSuppressLevel > 0)
return true;
// are they suppressed by any container widget?
HWND parentWnd = ::GetParent(mWnd);
if (parentWnd) {
nsWindow *parent = WinUtils::GetNSWindowPtr(parentWnd);
if (parent)
return parent->BlurEventsSuppressed();
}
return false;
}
// In some circumstances (opening dependent windows) it makes more sense
// (and fixes a crash bug) to not blur the parent window. Called from
// nsFilePicker.
void nsWindow::SuppressBlurEvents(bool aSuppress)
{
if (aSuppress)
++mBlurSuppressLevel; // for this widget
else {
NS_ASSERTION(mBlurSuppressLevel > 0, "unbalanced blur event suppression");
if (mBlurSuppressLevel > 0)
--mBlurSuppressLevel;
}
}
bool nsWindow::ConvertStatus(nsEventStatus aStatus)
{
return aStatus == nsEventStatus_eConsumeNoDefault;
}
/**************************************************************
*
* SECTION: IPC
*
* IPC related helpers.
*
**************************************************************/
// static
bool
nsWindow::IsAsyncResponseEvent(UINT aMsg, LRESULT& aResult)
{
switch(aMsg) {
case WM_SETFOCUS:
case WM_KILLFOCUS:
case WM_ENABLE:
case WM_WINDOWPOSCHANGING:
case WM_WINDOWPOSCHANGED:
case WM_PARENTNOTIFY:
case WM_ACTIVATEAPP:
case WM_NCACTIVATE:
case WM_ACTIVATE:
case WM_CHILDACTIVATE:
case WM_IME_SETCONTEXT:
case WM_IME_NOTIFY:
case WM_SHOWWINDOW:
case WM_CANCELMODE:
case WM_MOUSEACTIVATE:
case WM_CONTEXTMENU:
aResult = 0;
return true;
case WM_SETTINGCHANGE:
case WM_SETCURSOR:
return false;
}
#ifdef DEBUG
char szBuf[200];
sprintf(szBuf,
"An unhandled ISMEX_SEND message was received during spin loop! (%X)", aMsg);
NS_WARNING(szBuf);
#endif
return false;
}
void
nsWindow::IPCWindowProcHandler(UINT& msg, WPARAM& wParam, LPARAM& lParam)
{
NS_ASSERTION(!mozilla::ipc::SyncChannel::IsPumpingMessages(),
"Failed to prevent a nonqueued message from running!");
// Modal UI being displayed in windowless plugins.
if (mozilla::ipc::RPCChannel::IsSpinLoopActive() &&
(InSendMessageEx(NULL)&(ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
LRESULT res;
if (IsAsyncResponseEvent(msg, res)) {
ReplyMessage(res);
}
return;
}
// Handle certain sync plugin events sent to the parent which
// trigger ipc calls that result in deadlocks.
DWORD dwResult = 0;
bool handled = false;
switch(msg) {
// Windowless flash sending WM_ACTIVATE events to the main window
// via calls to ShowWindow.
case WM_ACTIVATE:
if (lParam != 0 && LOWORD(wParam) == WA_ACTIVE &&
IsWindow((HWND)lParam)) {
// Check for Adobe Reader X sync activate message from their
// helper window and ignore. Fixes an annoying focus problem.
if ((InSendMessageEx(NULL)&(ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
PRUnichar szClass[10];
HWND focusWnd = (HWND)lParam;
if (IsWindowVisible(focusWnd) &&
GetClassNameW(focusWnd, szClass,
sizeof(szClass)/sizeof(PRUnichar)) &&
!wcscmp(szClass, L"Edit") &&
!WinUtils::IsOurProcessWindow(focusWnd)) {
break;
}
}
handled = true;
}
break;
// Plugins taking or losing focus triggering focus app messages.
case WM_SETFOCUS:
case WM_KILLFOCUS:
// Windowed plugins that pass sys key events to defwndproc generate
// WM_SYSCOMMAND events to the main window.
case WM_SYSCOMMAND:
// Windowed plugins that fire context menu selection events to parent
// windows.
case WM_CONTEXTMENU:
// IME events fired as a result of synchronous focus changes
case WM_IME_SETCONTEXT:
handled = true;
break;
}
if (handled &&
(InSendMessageEx(NULL)&(ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
ReplyMessage(dwResult);
}
}
/**************************************************************
**************************************************************
**
** BLOCK: Native events
**
** Main Windows message handlers and OnXXX handlers for
** Windows event handling.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: Wind proc.
*
* The main Windows event procedures and associated
* message processing methods.
*
**************************************************************/
static bool
DisplaySystemMenu(HWND hWnd, nsSizeMode sizeMode, bool isRtl, PRInt32 x, PRInt32 y)
{
HMENU hMenu = GetSystemMenu(hWnd, FALSE);
if (hMenu) {
MENUITEMINFO mii;
mii.cbSize = sizeof(MENUITEMINFO);
mii.fMask = MIIM_STATE;
mii.fType = 0;
// update the options
mii.fState = MF_ENABLED;
SetMenuItemInfo(hMenu, SC_RESTORE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_SIZE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MOVE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MAXIMIZE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MINIMIZE, FALSE, &mii);
mii.fState = MF_GRAYED;
switch(sizeMode) {
case nsSizeMode_Fullscreen:
SetMenuItemInfo(hMenu, SC_RESTORE, FALSE, &mii);
// intentional fall through
case nsSizeMode_Maximized:
SetMenuItemInfo(hMenu, SC_SIZE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MOVE, FALSE, &mii);
SetMenuItemInfo(hMenu, SC_MAXIMIZE, FALSE, &mii);
break;
case nsSizeMode_Minimized:
SetMenuItemInfo(hMenu, SC_MINIMIZE, FALSE, &mii);
break;
case nsSizeMode_Normal:
SetMenuItemInfo(hMenu, SC_RESTORE, FALSE, &mii);
break;
}
LPARAM cmd =
TrackPopupMenu(hMenu,
(TPM_LEFTBUTTON|TPM_RIGHTBUTTON|
TPM_RETURNCMD|TPM_TOPALIGN|
(isRtl ? TPM_RIGHTALIGN : TPM_LEFTALIGN)),
x, y, 0, hWnd, NULL);
if (cmd) {
PostMessage(hWnd, WM_SYSCOMMAND, cmd, 0);
return true;
}
}
return false;
}
// The WndProc procedure for all nsWindows in this toolkit. This merely catches
// exceptions and passes the real work to WindowProcInternal. See bug 587406
// and http://msdn.microsoft.com/en-us/library/ms633573%28VS.85%29.aspx
LRESULT CALLBACK nsWindow::WindowProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
return mozilla::CallWindowProcCrashProtected(WindowProcInternal, hWnd, msg, wParam, lParam);
}
LRESULT CALLBACK nsWindow::WindowProcInternal(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
NS_TIME_FUNCTION_MIN_FMT(5.0, "%s (line %d) (hWnd: %p, msg: %p, wParam: %p, lParam: %p",
MOZ_FUNCTION_NAME, __LINE__, hWnd, msg,
wParam, lParam);
if (::GetWindowLongPtrW(hWnd, GWLP_ID) == eFakeTrackPointScrollableID) {
// This message was sent to the FAKETRACKPOINTSCROLLABLE.
if (msg == WM_HSCROLL) {
// Route WM_HSCROLL messages to the main window.
hWnd = ::GetParent(::GetParent(hWnd));
} else {
// Handle all other messages with its original window procedure.
WNDPROC prevWindowProc = (WNDPROC)::GetWindowLongPtr(hWnd, GWLP_USERDATA);
return ::CallWindowProcW(prevWindowProc, hWnd, msg, wParam, lParam);
}
}
if (msg == MOZ_WM_TRACE) {
// This is a tracer event for measuring event loop latency.
// See WidgetTraceEvent.cpp for more details.
mozilla::SignalTracerThread();
return 0;
}
// Get the window which caused the event and ask it to process the message
nsWindow *someWindow = WinUtils::GetNSWindowPtr(hWnd);
if (someWindow)
someWindow->IPCWindowProcHandler(msg, wParam, lParam);
// create this here so that we store the last rolled up popup until after
// the event has been processed.
nsAutoRollup autoRollup;
LRESULT popupHandlingResult;
if (DealWithPopups(hWnd, msg, wParam, lParam, &popupHandlingResult))
return popupHandlingResult;
// XXX This fixes 50208 and we are leaving 51174 open to further investigate
// why we are hitting this assert
if (nsnull == someWindow) {
NS_ASSERTION(someWindow, "someWindow is null, cannot call any CallWindowProc");
return ::DefWindowProcW(hWnd, msg, wParam, lParam);
}
// hold on to the window for the life of this method, in case it gets
// deleted during processing. yes, it's a double hack, since someWindow
// is not really an interface.
nsCOMPtr<nsISupports> kungFuDeathGrip;
if (!someWindow->mInDtor) // not if we're in the destructor!
kungFuDeathGrip = do_QueryInterface((nsBaseWidget*)someWindow);
// Call ProcessMessage
LRESULT retValue;
if (true == someWindow->ProcessMessage(msg, wParam, lParam, &retValue)) {
return retValue;
}
LRESULT res = ::CallWindowProcW(someWindow->GetPrevWindowProc(),
hWnd, msg, wParam, lParam);
return res;
}
// The main windows message processing method for plugins.
// The result means whether this method processed the native
// event for plugin. If false, the native event should be
// processed by the caller self.
bool
nsWindow::ProcessMessageForPlugin(const MSG &aMsg,
LRESULT *aResult,
bool &aCallDefWndProc)
{
NS_PRECONDITION(aResult, "aResult must be non-null.");
*aResult = 0;
aCallDefWndProc = false;
bool eventDispatched = false;
switch (aMsg.message) {
case WM_CHAR:
case WM_SYSCHAR:
*aResult = ProcessCharMessage(aMsg, &eventDispatched);
break;
case WM_KEYUP:
case WM_SYSKEYUP:
*aResult = ProcessKeyUpMessage(aMsg, &eventDispatched);
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
*aResult = ProcessKeyDownMessage(aMsg, &eventDispatched);
break;
case WM_DEADCHAR:
case WM_SYSDEADCHAR:
case WM_CUT:
case WM_COPY:
case WM_PASTE:
case WM_CLEAR:
case WM_UNDO:
break;
default:
return false;
}
if (!eventDispatched)
aCallDefWndProc = !DispatchPluginEvent(aMsg);
DispatchPendingEvents();
return true;
}
static void ForceFontUpdate()
{
// update device context font cache
// Dirty but easiest way:
// Changing nsIPrefBranch entry which triggers callbacks
// and flows into calling mDeviceContext->FlushFontCache()
// to update the font cache in all the instance of Browsers
static const char kPrefName[] = "font.internaluseonly.changed";
bool fontInternalChange =
Preferences::GetBool(kPrefName, false);
Preferences::SetBool(kPrefName, !fontInternalChange);
}
static bool CleartypeSettingChanged()
{
static int currentQuality = -1;
BYTE quality = cairo_win32_get_system_text_quality();
if (currentQuality == quality)
return false;
if (currentQuality < 0) {
currentQuality = quality;
return false;
}
currentQuality = quality;
return true;
}
// The main windows message processing method.
bool nsWindow::ProcessMessage(UINT msg, WPARAM &wParam, LPARAM &lParam,
LRESULT *aRetValue)
{
// For the Elantech Touchpad Zoom Gesture Hack, we should check that the
// system time (32-bit milliseconds) hasn't wrapped around. Otherwise we
// might get into the situation where wheel events for the next 50 days of
// system uptime are assumed to be Ctrl+Wheel events. (It is unlikely that
// we would get into that state, because the system would already need to be
// up for 50 days and the Control key message would need to be processed just
// before the system time overflow and the wheel message just after.)
//
// We also take the chance to reset mAssumeWheelIsZoomUntil if we simply have
// passed that time.
if (mAssumeWheelIsZoomUntil) {
LONG msgTime = ::GetMessageTime();
if ((mAssumeWheelIsZoomUntil >= 0x3fffffffu && DWORD(msgTime) < 0x40000000u) ||
(mAssumeWheelIsZoomUntil < DWORD(msgTime))) {
mAssumeWheelIsZoomUntil = 0;
}
}
// (Large blocks of code should be broken out into OnEvent handlers.)
if (mWindowHook.Notify(mWnd, msg, wParam, lParam, aRetValue))
return true;
#if defined(EVENT_DEBUG_OUTPUT)
// First param shows all events, second param indicates whether
// to show mouse move events. See nsWindowDbg for details.
PrintEvent(msg, SHOW_REPEAT_EVENTS, SHOW_MOUSEMOVE_EVENTS);
#endif
bool eatMessage;
if (nsIMM32Handler::ProcessMessage(this, msg, wParam, lParam, aRetValue,
eatMessage)) {
return mWnd ? eatMessage : true;
}
if (MouseScrollHandler::ProcessMessage(this, msg, wParam, lParam, aRetValue,
eatMessage)) {
return mWnd ? eatMessage : true;
}
if (PluginHasFocus()) {
bool callDefaultWndProc;
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam);
if (ProcessMessageForPlugin(nativeMsg, aRetValue, callDefaultWndProc)) {
return mWnd ? !callDefaultWndProc : true;
}
}
bool result = false; // call the default nsWindow proc
*aRetValue = 0;
// Glass hit testing w/custom transparent margins
LRESULT dwmHitResult;
if (mCustomNonClient &&
nsUXThemeData::CheckForCompositor() &&
nsUXThemeData::dwmDwmDefWindowProcPtr(mWnd, msg, wParam, lParam, &dwmHitResult)) {
*aRetValue = dwmHitResult;
return true;
}
switch (msg) {
// WM_QUERYENDSESSION must be handled by all windows.
// Otherwise Windows thinks the window can just be killed at will.
case WM_QUERYENDSESSION:
if (sCanQuit == TRI_UNKNOWN)
{
// Ask if it's ok to quit, and store the answer until we
// get WM_ENDSESSION signaling the round is complete.
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
nsCOMPtr<nsISupportsPRBool> cancelQuit =
do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID);
cancelQuit->SetData(false);
obsServ->NotifyObservers(cancelQuit, "quit-application-requested", nsnull);
bool abortQuit;
cancelQuit->GetData(&abortQuit);
sCanQuit = abortQuit ? TRI_FALSE : TRI_TRUE;
}
*aRetValue = sCanQuit ? TRUE : FALSE;
result = true;
break;
case WM_ENDSESSION:
case MOZ_WM_APP_QUIT:
if (msg == MOZ_WM_APP_QUIT || (wParam == TRUE && sCanQuit == TRI_TRUE))
{
// Let's fake a shutdown sequence without actually closing windows etc.
// to avoid Windows killing us in the middle. A proper shutdown would
// require having a chance to pump some messages. Unfortunately
// Windows won't let us do that. Bug 212316.
nsCOMPtr<nsIObserverService> obsServ =
mozilla::services::GetObserverService();
NS_NAMED_LITERAL_STRING(context, "shutdown-persist");
obsServ->NotifyObservers(nsnull, "quit-application-granted", nsnull);
obsServ->NotifyObservers(nsnull, "quit-application-forced", nsnull);
obsServ->NotifyObservers(nsnull, "quit-application", nsnull);
obsServ->NotifyObservers(nsnull, "profile-change-net-teardown", context.get());
obsServ->NotifyObservers(nsnull, "profile-change-teardown", context.get());
obsServ->NotifyObservers(nsnull, "profile-before-change", context.get());
// Then a controlled but very quick exit.
_exit(0);
}
sCanQuit = TRI_UNKNOWN;
result = true;
break;
case WM_DISPLAYCHANGE:
DispatchStandardEvent(NS_DISPLAYCHANGED);
break;
case WM_SYSCOLORCHANGE:
OnSysColorChanged();
break;
case WM_NOTIFY:
// TAB change
{
LPNMHDR pnmh = (LPNMHDR) lParam;
switch (pnmh->code) {
case TCN_SELCHANGE:
{
DispatchStandardEvent(NS_TABCHANGE);
result = true;
}
break;
}
}
break;
case WM_THEMECHANGED:
{
// Update non-client margin offsets
UpdateNonClientMargins();
nsUXThemeData::InitTitlebarInfo();
nsUXThemeData::UpdateNativeThemeInfo();
DispatchStandardEvent(NS_THEMECHANGED);
// Invalidate the window so that the repaint will
// pick up the new theme.
Invalidate(true, true, true);
}
break;
case WM_FONTCHANGE:
{
nsresult rv;
bool didChange = false;
// update the global font list
nsCOMPtr<nsIFontEnumerator> fontEnum = do_GetService("@mozilla.org/gfx/fontenumerator;1", &rv);
if (NS_SUCCEEDED(rv)) {
fontEnum->UpdateFontList(&didChange);
//didChange is TRUE only if new font langGroup is added to the list.
if (didChange) {
ForceFontUpdate();
}
} //if (NS_SUCCEEDED(rv))
}
break;
case WM_NCCALCSIZE:
{
// If wParam is TRUE, it specifies that the application should indicate
// which part of the client area contains valid information. The system
// copies the valid information to the specified area within the new
// client area. If the wParam parameter is FALSE, the application should
// return zero.
if (mCustomNonClient) {
if (!wParam) {
result = true;
*aRetValue = 0;
break;
}
// before:
// rgrc[0]: the proposed window
// rgrc[1]: the current window
// rgrc[2]: the source client area
// pncsp->lppos: move/size data
// after:
// rgrc[0]: the new client area
// rgrc[1]: the destination window
// rgrc[2]: the source client area
// (all values in screen coordiantes)
NCCALCSIZE_PARAMS *pncsp = reinterpret_cast<NCCALCSIZE_PARAMS*>(lParam);
LRESULT res = CallWindowProcW(GetPrevWindowProc(), mWnd, msg, wParam, lParam);
pncsp->rgrc[0].top -= mNonClientOffset.top;
pncsp->rgrc[0].left -= mNonClientOffset.left;
pncsp->rgrc[0].right += mNonClientOffset.right;
pncsp->rgrc[0].bottom += mNonClientOffset.bottom;
result = true;
*aRetValue = res;
}
break;
}
case WM_NCHITTEST:
{
/*
* If an nc client area margin has been moved, we are responsible
* for calculating where the resize margins are and returning the
* appropriate set of hit test constants. DwmDefWindowProc (above)
* will handle hit testing on it's command buttons if we are on a
* composited desktop.
*/
if (!mCustomNonClient)
break;
*aRetValue =
ClientMarginHitTestPoint(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
result = true;
break;
}
case WM_SETTEXT:
/*
* WM_SETTEXT paints the titlebar area. Avoid this if we have a
* custom titlebar we paint ourselves.
*/
if (!mCustomNonClient || mNonClientMargins.top == -1)
break;
{
// From msdn, the way around this is to disable the visible state
// temporarily. We need the text to be set but we don't want the
// redraw to occur.
DWORD style = GetWindowLong(mWnd, GWL_STYLE);
SetWindowLong(mWnd, GWL_STYLE, style & ~WS_VISIBLE);
*aRetValue = CallWindowProcW(GetPrevWindowProc(), mWnd,
msg, wParam, lParam);
SetWindowLong(mWnd, GWL_STYLE, style);
return true;
}
case WM_NCACTIVATE:
{
/*
* WM_NCACTIVATE paints nc areas. Avoid this and re-route painting
* through WM_NCPAINT via InvalidateNonClientRegion.
*/
if (!mCustomNonClient)
break;
// let the dwm handle nc painting on glass
if(nsUXThemeData::CheckForCompositor())
break;
if (wParam == TRUE) {
// going active
*aRetValue = FALSE; // ignored
result = true;
UpdateGetWindowInfoCaptionStatus(true);
// invalidate to trigger a paint
InvalidateNonClientRegion();
break;
} else {
// going inactive
*aRetValue = TRUE; // go ahead and deactive
result = true;
UpdateGetWindowInfoCaptionStatus(false);
// invalidate to trigger a paint
InvalidateNonClientRegion();
break;
}
}
case WM_NCPAINT:
{
/*
* Reset the non-client paint region so that it excludes the
* non-client areas we paint manually. Then call defwndproc
* to do the actual painting.
*/
if (!mCustomNonClient)
break;
// let the dwm handle nc painting on glass
if(nsUXThemeData::CheckForCompositor())
break;
HRGN paintRgn = ExcludeNonClientFromPaintRegion((HRGN)wParam);
LRESULT res = CallWindowProcW(GetPrevWindowProc(), mWnd,
msg, (WPARAM)paintRgn, lParam);
if (paintRgn != (HRGN)wParam)
DeleteObject(paintRgn);
*aRetValue = res;
result = true;
}
break;
case WM_POWERBROADCAST:
switch (wParam)
{
case PBT_APMSUSPEND:
PostSleepWakeNotification(true);
break;
case PBT_APMRESUMEAUTOMATIC:
case PBT_APMRESUMECRITICAL:
case PBT_APMRESUMESUSPEND:
PostSleepWakeNotification(false);
break;
}
break;
case WM_MOVE: // Window moved
{
RECT rect;
::GetWindowRect(mWnd, &rect);
result = OnMove(rect.left, rect.top);
}
break;
case WM_CLOSE: // close request
DispatchStandardEvent(NS_XUL_CLOSE);
result = true; // abort window closure
break;
case WM_DESTROY:
// clean up.
OnDestroy();
result = true;
break;
case WM_PAINT:
if (CleartypeSettingChanged()) {
ForceFontUpdate();
gfxFontCache *fc = gfxFontCache::GetCache();
if (fc) {
fc->Flush();
}
}
*aRetValue = (int) OnPaint(NULL, 0);
result = true;
break;
case WM_PRINTCLIENT:
result = OnPaint((HDC) wParam, 0);
break;
case WM_HOTKEY:
result = OnHotKey(wParam, lParam);
break;
case WM_SYSCHAR:
case WM_CHAR:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam);
result = ProcessCharMessage(nativeMsg, nsnull);
DispatchPendingEvents();
}
break;
case WM_SYSKEYUP:
case WM_KEYUP:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam);
nativeMsg.time = ::GetMessageTime();
result = ProcessKeyUpMessage(nativeMsg, nsnull);
DispatchPendingEvents();
}
break;
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam);
result = ProcessKeyDownMessage(nativeMsg, nsnull);
DispatchPendingEvents();
}
break;
// say we've dealt with erase background if widget does
// not need auto-erasing
case WM_ERASEBKGND:
if (!AutoErase((HDC)wParam)) {
*aRetValue = 1;
result = true;
}
break;
case WM_MOUSEMOVE:
{
mMousePresent = true;
// Suppress dispatch of pending events
// when mouse moves are generated by widget
// creation instead of user input.
LPARAM lParamScreen = lParamToScreen(lParam);
POINT mp;
mp.x = GET_X_LPARAM(lParamScreen);
mp.y = GET_Y_LPARAM(lParamScreen);
bool userMovedMouse = false;
if ((sLastMouseMovePoint.x != mp.x) || (sLastMouseMovePoint.y != mp.y)) {
userMovedMouse = true;
}
result = DispatchMouseEvent(NS_MOUSE_MOVE, wParam, lParam,
false, nsMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
if (userMovedMouse) {
DispatchPendingEvents();
}
}
break;
case WM_NCMOUSEMOVE:
// If we receive a mouse move event on non-client chrome, make sure and
// send an NS_MOUSE_EXIT event as well.
if (mMousePresent && !sIsInMouseCapture)
SendMessage(mWnd, WM_MOUSELEAVE, 0, 0);
break;
case WM_LBUTTONDOWN:
{
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam, lParam,
false, nsMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
}
break;
case WM_LBUTTONUP:
{
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam, lParam,
false, nsMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
}
break;
case WM_MOUSELEAVE:
{
if (!mMousePresent)
break;
mMousePresent = false;
// We need to check mouse button states and put them in for
// wParam.
WPARAM mouseState = (GetKeyState(VK_LBUTTON) ? MK_LBUTTON : 0)
| (GetKeyState(VK_MBUTTON) ? MK_MBUTTON : 0)
| (GetKeyState(VK_RBUTTON) ? MK_RBUTTON : 0);
// Synthesize an event position because we don't get one from
// WM_MOUSELEAVE.
LPARAM pos = lParamToClient(::GetMessagePos());
DispatchMouseEvent(NS_MOUSE_EXIT, mouseState, pos, false,
nsMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
}
break;
case WM_CONTEXTMENU:
{
// if the context menu is brought up from the keyboard, |lParam|
// will be -1.
LPARAM pos;
bool contextMenukey = false;
if (lParam == -1)
{
contextMenukey = true;
pos = lParamToClient(GetMessagePos());
}
else
{
pos = lParamToClient(lParam);
}
result = DispatchMouseEvent(NS_CONTEXTMENU, wParam, pos, contextMenukey,
contextMenukey ?
nsMouseEvent::eLeftButton :
nsMouseEvent::eRightButton, MOUSE_INPUT_SOURCE());
if (lParam != -1 && !result && mCustomNonClient &&
DispatchMouseEvent(NS_MOUSE_MOZHITTEST, wParam, pos,
false, nsMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE())) {
// Blank area hit, throw up the system menu.
DisplaySystemMenu(mWnd, mSizeMode, mIsRTL, GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam));
result = true;
}
}
break;
case WM_LBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam, lParam, false,
nsMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam, lParam, false,
nsMouseEvent::eMiddleButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam, lParam, false,
nsMouseEvent::eMiddleButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam, lParam, false,
nsMouseEvent::eMiddleButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, 0, lParamToClient(lParam), false,
nsMouseEvent::eMiddleButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0, lParamToClient(lParam), false,
nsMouseEvent::eMiddleButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0, lParamToClient(lParam), false,
nsMouseEvent::eMiddleButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam, lParam, false,
nsMouseEvent::eRightButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam, lParam, false,
nsMouseEvent::eRightButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam, lParam, false,
nsMouseEvent::eRightButton, MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, 0, lParamToClient(lParam),
false, nsMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0, lParamToClient(lParam),
false, nsMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0, lParamToClient(lParam),
false, nsMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_EXITSIZEMOVE:
if (!sIsInMouseCapture) {
DispatchStandardEvent(NS_DONESIZEMOVE);
}
break;
case WM_NCLBUTTONDBLCLK:
DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0, lParamToClient(lParam),
false, nsMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
result =
DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0, lParamToClient(lParam),
false, nsMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_APPCOMMAND:
{
PRUint32 appCommand = GET_APPCOMMAND_LPARAM(lParam);
switch (appCommand)
{
case APPCOMMAND_BROWSER_BACKWARD:
case APPCOMMAND_BROWSER_FORWARD:
case APPCOMMAND_BROWSER_REFRESH:
case APPCOMMAND_BROWSER_STOP:
case APPCOMMAND_BROWSER_SEARCH:
case APPCOMMAND_BROWSER_FAVORITES:
case APPCOMMAND_BROWSER_HOME:
DispatchCommandEvent(appCommand);
// tell the driver that we handled the event
*aRetValue = 1;
result = true;
break;
}
// default = false - tell the driver that the event was not handled
}
break;
case WM_HSCROLL:
case WM_VSCROLL:
*aRetValue = 0;
result = OnScroll(msg, wParam, lParam);
break;
case MOZ_WM_HSCROLL:
case MOZ_WM_VSCROLL:
*aRetValue = 0;
OnScrollInternal(WinUtils::GetNativeMessage(msg), wParam, lParam);
// Doesn't need to call next wndproc for internal message.
return true;
// The WM_ACTIVATE event is fired when a window is raised or lowered,
// and the loword of wParam specifies which. But we don't want to tell
// the focus system about this until the WM_SETFOCUS or WM_KILLFOCUS
// events are fired. Instead, set either the sJustGotActivate or
// gJustGotDeativate flags and fire the NS_ACTIVATE or NS_DEACTIVATE
// events once the focus events arrive.
case WM_ACTIVATE:
if (mEventCallback) {
PRInt32 fActive = LOWORD(wParam);
if (WA_INACTIVE == fActive) {
// when minimizing a window, the deactivation and focus events will
// be fired in the reverse order. Instead, just dispatch
// NS_DEACTIVATE right away.
if (HIWORD(wParam))
result = DispatchFocusToTopLevelWindow(NS_DEACTIVATE);
else
sJustGotDeactivate = true;
if (mIsTopWidgetWindow)
mLastKeyboardLayout = gKbdLayout.GetLayout();
} else {
StopFlashing();
sJustGotActivate = true;
nsMouseEvent event(true, NS_MOUSE_ACTIVATE, this,
nsMouseEvent::eReal);
InitEvent(event);
DispatchWindowEvent(&event);
if (sSwitchKeyboardLayout && mLastKeyboardLayout)
ActivateKeyboardLayout(mLastKeyboardLayout, 0);
}
}
break;
case WM_MOUSEACTIVATE:
if (mWindowType == eWindowType_popup) {
// a popup with a parent owner should not be activated when clicked
// but should still allow the mouse event to be fired, so the return
// value is set to MA_NOACTIVATE. But if the owner isn't the frontmost
// window, just use default processing so that the window is activated.
HWND owner = ::GetWindow(mWnd, GW_OWNER);
if (owner && owner == ::GetForegroundWindow()) {
*aRetValue = MA_NOACTIVATE;
result = true;
}
}
break;
case WM_WINDOWPOSCHANGING:
{
LPWINDOWPOS info = (LPWINDOWPOS) lParam;
OnWindowPosChanging(info);
}
break;
case WM_SETFOCUS:
// If previous focused window isn't ours, it must have received the
// redirected message. So, we should forget it.
if (!WinUtils::IsOurProcessWindow(HWND(wParam))) {
ForgetRedirectedKeyDownMessage();
}
if (sJustGotActivate) {
result = DispatchFocusToTopLevelWindow(NS_ACTIVATE);
}
break;
case WM_KILLFOCUS:
if (sJustGotDeactivate) {
result = DispatchFocusToTopLevelWindow(NS_DEACTIVATE);
}
break;
case WM_WINDOWPOSCHANGED:
{
WINDOWPOS *wp = (LPWINDOWPOS)lParam;
OnWindowPosChanged(wp, result);
}
break;
case WM_SETTINGCHANGE:
switch (wParam) {
case SPI_SETWHEELSCROLLLINES:
case SPI_SETWHEELSCROLLCHARS:
sNeedsToInitMouseWheelSettings = true;
break;
}
break;
case WM_INPUTLANGCHANGEREQUEST:
*aRetValue = TRUE;
result = false;
break;
case WM_INPUTLANGCHANGE:
result = OnInputLangChange((HKL)lParam);
break;
case WM_DESTROYCLIPBOARD:
{
nsIClipboard* clipboard;
nsresult rv = CallGetService(kCClipboardCID, &clipboard);
if(NS_SUCCEEDED(rv)) {
clipboard->EmptyClipboard(nsIClipboard::kGlobalClipboard);
NS_RELEASE(clipboard);
}
}
break;
#ifdef ACCESSIBILITY
case WM_GETOBJECT:
{
*aRetValue = 0;
// Do explicit casting to make it working on 64bit systems (see bug 649236
// for details).
DWORD objId = static_cast<DWORD>(lParam);
if (objId == OBJID_CLIENT) { // oleacc.dll will be loaded dynamically
nsAccessible *rootAccessible = GetRootAccessible(); // Held by a11y cache
if (rootAccessible) {
IAccessible *msaaAccessible = NULL;
rootAccessible->GetNativeInterface((void**)&msaaAccessible); // does an addref
if (msaaAccessible) {
*aRetValue = LresultFromObject(IID_IAccessible, wParam, msaaAccessible); // does an addref
msaaAccessible->Release(); // release extra addref
result = true; // We handled the WM_GETOBJECT message
}
}
}
}
#endif
case WM_SYSCOMMAND:
{
WPARAM filteredWParam = (wParam &0xFFF0);
// prevent Windows from trimming the working set. bug 76831
if (!sTrimOnMinimize && filteredWParam == SC_MINIMIZE) {
::ShowWindow(mWnd, SW_SHOWMINIMIZED);
result = true;
}
// Handle the system menu manually when we're in full screen mode
// so we can set the appropriate options.
if (filteredWParam == SC_KEYMENU && lParam == VK_SPACE &&
mSizeMode == nsSizeMode_Fullscreen) {
DisplaySystemMenu(mWnd, mSizeMode, mIsRTL,
MOZ_SYSCONTEXT_X_POS,
MOZ_SYSCONTEXT_Y_POS);
result = true;
}
}
break;
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
OnMouseWheel(msg, wParam, lParam, aRetValue);
// We don't need to call next wndproc WM_MOUSEWHEEL and WM_MOUSEHWHEEL.
// We should consume them always. If the messages would be handled by
// our window again, it causes making infinite message loop.
return true;
case MOZ_WM_MOUSEVWHEEL:
case MOZ_WM_MOUSEHWHEEL:
{
UINT nativeMessage = WinUtils::GetNativeMessage(msg);
// If OnMouseWheel returns true, the event was forwarded directly to another
// mozilla window message handler (ProcessMessage). In this case the return
// value of the forwarded event is in 'result' which we should return immediately.
// If OnMouseWheel returns false, OnMouseWheel processed the event internally.
// 'result' and 'aRetValue' will be set based on what we did with the event, so
// we should fall through.
OnMouseWheelInternal(nativeMessage, wParam, lParam, aRetValue);
// Doesn't need to call next wndproc for internal message.
return true;
}
case WM_DWMCOMPOSITIONCHANGED:
// First, update the compositor state to latest one. All other methods
// should use same state as here for consistency painting.
nsUXThemeData::CheckForCompositor(true);
UpdateNonClientMargins();
RemovePropW(mWnd, kManageWindowInfoProperty);
BroadcastMsg(mWnd, WM_DWMCOMPOSITIONCHANGED);
DispatchStandardEvent(NS_THEMECHANGED);
UpdateGlass();
Invalidate(true, true, true);
break;
case WM_UPDATEUISTATE:
{
// If the UI state has changed, fire an event so the UI updates the
// keyboard cues based on the system setting and how the window was
// opened. For example, a dialog opened via a keyboard press on a button
// should enable cues, whereas the same dialog opened via a mouse click of
// the button should not.
PRInt32 action = LOWORD(wParam);
if (action == UIS_SET || action == UIS_CLEAR) {
nsUIStateChangeEvent event(true, NS_UISTATECHANGED, this);
PRInt32 flags = HIWORD(wParam);
if (flags & UISF_HIDEACCEL)
event.showAccelerators = (action == UIS_SET) ? UIStateChangeType_Clear : UIStateChangeType_Set;
if (flags & UISF_HIDEFOCUS)
event.showFocusRings = (action == UIS_SET) ? UIStateChangeType_Clear : UIStateChangeType_Set;
DispatchWindowEvent(&event);
}
break;
}
/* Gesture support events */
case WM_TABLET_QUERYSYSTEMGESTURESTATUS:
// According to MS samples, this must be handled to enable
// rotational support in multi-touch drivers.
result = true;
*aRetValue = TABLET_ROTATE_GESTURE_ENABLE;
break;
case WM_TOUCH:
result = OnTouch(wParam, lParam);
if (result) {
*aRetValue = 0;
}
break;
case WM_GESTURE:
result = OnGesture(wParam, lParam);
break;
case WM_GESTURENOTIFY:
{
if (mWindowType != eWindowType_invisible &&
mWindowType != eWindowType_plugin) {
// A GestureNotify event is dispatched to decide which single-finger panning
// direction should be active (including none) and if pan feedback should
// be displayed. Java and plugin windows can make their own calls.
GESTURENOTIFYSTRUCT * gestureinfo = (GESTURENOTIFYSTRUCT*)lParam;
nsPointWin touchPoint;
touchPoint = gestureinfo->ptsLocation;
touchPoint.ScreenToClient(mWnd);
nsGestureNotifyEvent gestureNotifyEvent(true, NS_GESTURENOTIFY_EVENT_START, this);
gestureNotifyEvent.refPoint = touchPoint;
nsEventStatus status;
DispatchEvent(&gestureNotifyEvent, status);
mDisplayPanFeedback = gestureNotifyEvent.displayPanFeedback;
if (!mTouchWindow)
mGesture.SetWinGestureSupport(mWnd, gestureNotifyEvent.panDirection);
}
result = false; //should always bubble to DefWindowProc
}
break;
case WM_CLEAR:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_DELETE, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_CUT:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_CUT, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_COPY:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_COPY, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_PASTE:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_PASTE, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case EM_UNDO:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_UNDO, this);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_REDO:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_REDO, this);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_CANPASTE:
{
// Support EM_CANPASTE message only when wParam isn't specified or
// is plain text format.
if (wParam == 0 || wParam == CF_TEXT || wParam == CF_UNICODETEXT) {
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_PASTE,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
}
break;
case EM_CANUNDO:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_UNDO,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_CANREDO:
{
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_REDO,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
default:
{
#ifdef NS_ENABLE_TSF
if (msg == WM_USER_TSF_TEXTCHANGE) {
nsTextStore::OnTextChangeMsg();
}
#endif //NS_ENABLE_TSF
if (msg == nsAppShell::GetTaskbarButtonCreatedMessage())
SetHasTaskbarIconBeenCreated();
if (msg == sOOPPPluginFocusEvent) {
if (wParam == 1) {
// With OOPP, the plugin window exists in another process and is a child of
// this window. This window is a placeholder plugin window for the dom. We
// receive this event when the child window receives focus. (sent from
// PluginInstanceParent.cpp)
::SendMessage(mWnd, WM_MOUSEACTIVATE, 0, 0); // See nsPluginNativeWindowWin.cpp
} else {
// WM_KILLFOCUS was received by the child process.
if (sJustGotDeactivate) {
DispatchFocusToTopLevelWindow(NS_DEACTIVATE);
}
}
}
}
break;
}
//*aRetValue = result;
if (mWnd) {
return result;
}
else {
//Events which caused mWnd destruction and aren't consumed
//will crash during the Windows default processing.
return true;
}
}
/**************************************************************
*
* SECTION: Broadcast messaging
*
* Broadcast messages to all windows.
*
**************************************************************/
// Enumerate all child windows sending aMsg to each of them
BOOL CALLBACK nsWindow::BroadcastMsgToChildren(HWND aWnd, LPARAM aMsg)
{
WNDPROC winProc = (WNDPROC)::GetWindowLongPtrW(aWnd, GWLP_WNDPROC);
if (winProc == &nsWindow::WindowProc) {
// it's one of our windows so go ahead and send a message to it
::CallWindowProcW(winProc, aWnd, aMsg, 0, 0);
}
return TRUE;
}
// Enumerate all top level windows specifying that the children of each
// top level window should be enumerated. Do *not* send the message to
// each top level window since it is assumed that the toolkit will send
// aMsg to them directly.
BOOL CALLBACK nsWindow::BroadcastMsg(HWND aTopWindow, LPARAM aMsg)
{
// Iterate each of aTopWindows child windows sending the aMsg
// to each of them.
::EnumChildWindows(aTopWindow, nsWindow::BroadcastMsgToChildren, aMsg);
return TRUE;
}
/**************************************************************
*
* SECTION: Event processing helpers
*
* Special processing for certain event types and
* synthesized events.
*
**************************************************************/
PRInt32
nsWindow::ClientMarginHitTestPoint(PRInt32 mx, PRInt32 my)
{
if (mSizeMode == nsSizeMode_Minimized ||
mSizeMode == nsSizeMode_Fullscreen) {
return HTCLIENT;
}
// Calculations are done in screen coords
RECT winRect;
GetWindowRect(mWnd, &winRect);
// hit return constants:
// HTBORDER - non-resizable border
// HTBOTTOM, HTLEFT, HTRIGHT, HTTOP - resizable border
// HTBOTTOMLEFT, HTBOTTOMRIGHT - resizable corner
// HTTOPLEFT, HTTOPRIGHT - resizable corner
// HTCAPTION - general title bar area
// HTCLIENT - area considered the client
// HTCLOSE - hovering over the close button
// HTMAXBUTTON - maximize button
// HTMINBUTTON - minimize button
PRInt32 testResult = HTCLIENT;
bool isResizable = (mBorderStyle & (eBorderStyle_all |
eBorderStyle_resizeh |
eBorderStyle_default)) > 0 ? true : false;
if (mSizeMode == nsSizeMode_Maximized)
isResizable = false;
bool top = false;
bool bottom = false;
bool left = false;
bool right = false;
int topOffset = NS_MAX(mCaptionHeight - mNonClientOffset.top,
kResizableBorderMinSize);
int bottomOffset = NS_MAX(mVertResizeMargin - mNonClientOffset.bottom,
kResizableBorderMinSize);
int topBounds = winRect.top + topOffset;
int bottomBounds = winRect.bottom - bottomOffset;
if (my >= winRect.top && my < topBounds)
top = true;
else if (my <= winRect.bottom && my > bottomBounds)
bottom = true;
int leftOffset = NS_MAX(mHorResizeMargin - mNonClientOffset.left,
kResizableBorderMinSize);
int rightOffset = NS_MAX(mHorResizeMargin - mNonClientOffset.right,
kResizableBorderMinSize);
// (the 2x case here doubles the resize area for corners)
int leftBounds = winRect.left +
(bottom ? (2*leftOffset) : leftOffset);
int rightBounds = winRect.right -
(bottom ? (2*rightOffset) : rightOffset);
if (mx >= winRect.left && mx < leftBounds)
left = true;
else if (mx <= winRect.right && mx > rightBounds)
right = true;
if (isResizable) {
if (top) {
testResult = HTTOP;
if (left)
testResult = HTTOPLEFT;
else if (right)
testResult = HTTOPRIGHT;
} else if (bottom) {
testResult = HTBOTTOM;
if (left)
testResult = HTBOTTOMLEFT;
else if (right)
testResult = HTBOTTOMRIGHT;
} else {
if (left)
testResult = HTLEFT;
if (right)
testResult = HTRIGHT;
}
} else {
if (top)
testResult = HTCAPTION;
else if (bottom || left || right)
testResult = HTBORDER;
}
bool contentOverlap = true;
if (mSizeMode != nsSizeMode_Maximized) {
contentOverlap = mx >= winRect.left + leftOffset &&
mx <= winRect.right - rightOffset &&
my >= winRect.top + topOffset &&
my <= winRect.bottom - bottomOffset;
}
if (!sIsInMouseCapture &&
contentOverlap &&
(testResult == HTCLIENT ||
testResult == HTTOP ||
testResult == HTBORDER ||
testResult == HTTOPLEFT ||
testResult == HTCAPTION)) {
LPARAM lParam = MAKELPARAM(mx, my);
LPARAM lParamClient = lParamToClient(lParam);
bool result = DispatchMouseEvent(NS_MOUSE_MOZHITTEST, 0, lParamClient,
false, nsMouseEvent::eLeftButton, MOUSE_INPUT_SOURCE());
if (result) {
// The mouse is over a blank area
testResult = testResult == HTCLIENT ? HTCAPTION : testResult;
} else {
// There's content over the mouse pointer. Set HTCLIENT
// to possibly override a resizer border.
testResult = HTCLIENT;
}
}
return testResult;
}
void nsWindow::PostSleepWakeNotification(const bool aIsSleepMode)
{
if (aIsSleepMode == gIsSleepMode)
return;
gIsSleepMode = aIsSleepMode;
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService)
observerService->NotifyObservers(nsnull,
aIsSleepMode ? "sleep_notification" : "wake_notification", nsnull);
}
// RemoveNextCharMessage() should be called by WM_KEYDOWN or WM_SYSKEYDOWM
// message handler. If there is no WM_(SYS)CHAR message for it, this
// method does nothing.
// NOTE: WM_(SYS)CHAR message is posted by TranslateMessage() API which is
// called in message loop. So, WM_(SYS)KEYDOWN message should have
// WM_(SYS)CHAR message in the queue if the keydown event causes character
// input.
/* static */
void nsWindow::RemoveNextCharMessage(HWND aWnd)
{
MSG msg;
if (::PeekMessageW(&msg, aWnd,
WM_KEYFIRST, WM_KEYLAST, PM_NOREMOVE | PM_NOYIELD) &&
(msg.message == WM_CHAR || msg.message == WM_SYSCHAR)) {
::GetMessageW(&msg, aWnd, msg.message, msg.message);
}
}
LRESULT nsWindow::ProcessCharMessage(const MSG &aMsg, bool *aEventDispatched)
{
NS_PRECONDITION(aMsg.message == WM_CHAR || aMsg.message == WM_SYSCHAR,
"message is not keydown event");
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("%s charCode=%d scanCode=%d\n",
aMsg.message == WM_SYSCHAR ? "WM_SYSCHAR" : "WM_CHAR",
aMsg.wParam, HIWORD(aMsg.lParam) & 0xFF));
// These must be checked here too as a lone WM_CHAR could be received
// if a child window didn't handle it (for example Alt+Space in a content window)
nsModifierKeyState modKeyState;
return OnChar(aMsg, modKeyState, aEventDispatched);
}
LRESULT nsWindow::ProcessKeyUpMessage(const MSG &aMsg, bool *aEventDispatched)
{
NS_PRECONDITION(aMsg.message == WM_KEYUP || aMsg.message == WM_SYSKEYUP,
"message is not keydown event");
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("%s VK=%d\n", aMsg.message == WM_SYSKEYDOWN ?
"WM_SYSKEYUP" : "WM_KEYUP", aMsg.wParam));
nsModifierKeyState modKeyState;
// Note: the original code passed (HIWORD(lParam)) to OnKeyUp as
// scan code. However, this breaks Alt+Num pad input.
// MSDN states the following:
// Typically, ToAscii performs the translation based on the
// virtual-key code. In some cases, however, bit 15 of the
// uScanCode parameter may be used to distinguish between a key
// press and a key release. The scan code is used for
// translating ALT+number key combinations.
// ignore [shift+]alt+space so the OS can handle it
if (modKeyState.mIsAltDown && !modKeyState.mIsControlDown &&
IS_VK_DOWN(NS_VK_SPACE)) {
return FALSE;
}
if (!nsIMM32Handler::IsComposingOn(this) &&
(aMsg.message != WM_KEYUP || aMsg.wParam != VK_MENU)) {
// Ignore VK_MENU if it's not a system key release, so that the menu bar does not trigger
// This helps avoid triggering the menu bar for ALT key accelerators used in
// assistive technologies such as Window-Eyes and ZoomText, and when using Alt+Tab
// to switch back to Mozilla in Windows 95 and Windows 98
return OnKeyUp(aMsg, modKeyState, aEventDispatched);
}
return 0;
}
LRESULT nsWindow::ProcessKeyDownMessage(const MSG &aMsg,
bool *aEventDispatched)
{
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("%s VK=%d\n", aMsg.message == WM_SYSKEYDOWN ?
"WM_SYSKEYDOWN" : "WM_KEYDOWN", aMsg.wParam));
NS_PRECONDITION(aMsg.message == WM_KEYDOWN || aMsg.message == WM_SYSKEYDOWN,
"message is not keydown event");
// If this method doesn't call OnKeyDown(), this method must clean up the
// redirected message information itself. For more information, see above
// comment of AutoForgetRedirectedKeyDownMessage struct definition in
// nsWindow.h.
AutoForgetRedirectedKeyDownMessage forgetRedirectedMessage(this, aMsg);
nsModifierKeyState modKeyState;
// Note: the original code passed (HIWORD(lParam)) to OnKeyDown as
// scan code. However, this breaks Alt+Num pad input.
// MSDN states the following:
// Typically, ToAscii performs the translation based on the
// virtual-key code. In some cases, however, bit 15 of the
// uScanCode parameter may be used to distinguish between a key
// press and a key release. The scan code is used for
// translating ALT+number key combinations.
// ignore [shift+]alt+space so the OS can handle it
if (modKeyState.mIsAltDown && !modKeyState.mIsControlDown &&
IS_VK_DOWN(NS_VK_SPACE))
return FALSE;
LRESULT result = 0;
if (modKeyState.mIsAltDown && nsIMM32Handler::IsStatusChanged()) {
nsIMM32Handler::NotifyEndStatusChange();
} else if (!nsIMM32Handler::IsComposingOn(this)) {
result = OnKeyDown(aMsg, modKeyState, aEventDispatched, nsnull);
// OnKeyDown cleaned up the redirected message information itself, so,
// we should do nothing.
forgetRedirectedMessage.mCancel = true;
}
if (aMsg.wParam == VK_MENU ||
(aMsg.wParam == VK_F10 && !modKeyState.mIsShiftDown)) {
// We need to let Windows handle this keypress,
// by returning false, if there's a native menu
// bar somewhere in our containing window hierarchy.
// Otherwise we handle the keypress and don't pass
// it on to Windows, by returning true.
bool hasNativeMenu = false;
HWND hWnd = mWnd;
while (hWnd) {
if (::GetMenu(hWnd)) {
hasNativeMenu = true;
break;
}
hWnd = ::GetParent(hWnd);
}
result = !hasNativeMenu;
}
return result;
}
nsresult
nsWindow::SynthesizeNativeKeyEvent(PRInt32 aNativeKeyboardLayout,
PRInt32 aNativeKeyCode,
PRUint32 aModifierFlags,
const nsAString& aCharacters,
const nsAString& aUnmodifiedCharacters)
{
nsPrintfCString layoutName("%08x", aNativeKeyboardLayout);
HKL loadedLayout = LoadKeyboardLayoutA(layoutName.get(), KLF_NOTELLSHELL);
if (loadedLayout == NULL)
return NS_ERROR_NOT_AVAILABLE;
// Setup clean key state and load desired layout
BYTE originalKbdState[256];
::GetKeyboardState(originalKbdState);
BYTE kbdState[256];
memset(kbdState, 0, sizeof(kbdState));
// This changes the state of the keyboard for the current thread only,
// and we'll restore it soon, so this should be OK.
::SetKeyboardState(kbdState);
HKL oldLayout = gKbdLayout.GetLayout();
gKbdLayout.LoadLayout(loadedLayout);
nsAutoTArray<KeyPair,10> keySequence;
SetupKeyModifiersSequence(&keySequence, aModifierFlags);
NS_ASSERTION(aNativeKeyCode >= 0 && aNativeKeyCode < 256,
"Native VK key code out of range");
keySequence.AppendElement(KeyPair(aNativeKeyCode, 0));
// Simulate the pressing of each modifier key and then the real key
for (PRUint32 i = 0; i < keySequence.Length(); ++i) {
PRUint8 key = keySequence[i].mGeneral;
PRUint8 keySpecific = keySequence[i].mSpecific;
kbdState[key] = 0x81; // key is down and toggled on if appropriate
if (keySpecific) {
kbdState[keySpecific] = 0x81;
}
::SetKeyboardState(kbdState);
nsModifierKeyState modKeyState;
MSG msg = WinUtils::InitMSG(WM_KEYDOWN, key, 0);
if (i == keySequence.Length() - 1 && aCharacters.Length() > 0) {
UINT scanCode = ::MapVirtualKeyEx(aNativeKeyCode, MAPVK_VK_TO_VSC,
gKbdLayout.GetLayout());
nsFakeCharMessage fakeMsg = { aCharacters.CharAt(0), scanCode };
OnKeyDown(msg, modKeyState, nsnull, &fakeMsg);
} else {
OnKeyDown(msg, modKeyState, nsnull, nsnull);
}
}
for (PRUint32 i = keySequence.Length(); i > 0; --i) {
PRUint8 key = keySequence[i - 1].mGeneral;
PRUint8 keySpecific = keySequence[i - 1].mSpecific;
kbdState[key] = 0; // key is up and toggled off if appropriate
if (keySpecific) {
kbdState[keySpecific] = 0;
}
::SetKeyboardState(kbdState);
nsModifierKeyState modKeyState;
MSG msg = WinUtils::InitMSG(WM_KEYUP, key, 0);
OnKeyUp(msg, modKeyState, nsnull);
}
// Restore old key state and layout
::SetKeyboardState(originalKbdState);
gKbdLayout.LoadLayout(oldLayout);
UnloadKeyboardLayout(loadedLayout);
return NS_OK;
}
nsresult
nsWindow::SynthesizeNativeMouseEvent(nsIntPoint aPoint,
PRUint32 aNativeMessage,
PRUint32 aModifierFlags)
{
RECT r;
::GetWindowRect(mWnd, &r);
::SetCursorPos(r.left + aPoint.x, r.top + aPoint.y);
INPUT input;
memset(&input, 0, sizeof(input));
input.type = INPUT_MOUSE;
input.mi.dwFlags = aNativeMessage;
::SendInput(1, &input, sizeof(INPUT));
return NS_OK;
}
/**************************************************************
*
* SECTION: OnXXX message handlers
*
* For message handlers that need to be broken out or
* implemented in specific platform code.
*
**************************************************************/
BOOL nsWindow::OnInputLangChange(HKL aHKL)
{
#ifdef KE_DEBUG
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("OnInputLanguageChange\n"));
#endif
gKbdLayout.LoadLayout(aHKL);
return false; // always pass to child window
}
void nsWindow::OnWindowPosChanged(WINDOWPOS *wp, bool& result)
{
if (wp == nsnull)
return;
#ifdef WINSTATE_DEBUG_OUTPUT
if (mWnd == WinUtils::GetTopLevelHWND(mWnd)) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("*** OnWindowPosChanged: [ top] "));
} else {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("*** OnWindowPosChanged: [child] "));
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("WINDOWPOS flags:"));
if (wp->flags & SWP_FRAMECHANGED) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_FRAMECHANGED "));
}
if (wp->flags & SWP_SHOWWINDOW) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_SHOWWINDOW "));
}
if (wp->flags & SWP_NOSIZE) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_NOSIZE "));
}
if (wp->flags & SWP_HIDEWINDOW) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_HIDEWINDOW "));
}
if (wp->flags & SWP_NOZORDER) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_NOZORDER "));
}
if (wp->flags & SWP_NOACTIVATE) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("SWP_NOACTIVATE "));
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("\n"));
#endif
// Handle window size mode changes
if (wp->flags & SWP_FRAMECHANGED && mSizeMode != nsSizeMode_Fullscreen) {
// Bug 566135 - Windows theme code calls show window on SW_SHOWMINIMIZED
// windows when fullscreen games disable desktop composition. If we're
// minimized and not being activated, ignore the event and let windows
// handle it.
if (mSizeMode == nsSizeMode_Minimized && (wp->flags & SWP_NOACTIVATE))
return;
nsSizeModeEvent event(true, NS_SIZEMODE, this);
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
if (pl.showCmd == SW_SHOWMAXIMIZED)
event.mSizeMode = (mFullscreenMode ? nsSizeMode_Fullscreen : nsSizeMode_Maximized);
else if (pl.showCmd == SW_SHOWMINIMIZED)
event.mSizeMode = nsSizeMode_Minimized;
else if (mFullscreenMode)
event.mSizeMode = nsSizeMode_Fullscreen;
else
event.mSizeMode = nsSizeMode_Normal;
// Windows has just changed the size mode of this window. The following
// NS_SIZEMODE event will trigger a call into SetSizeMode where we will
// set the min/max window state again or for nsSizeMode_Normal, call
// SetWindow with a parameter of SW_RESTORE. There's no need however as
// this window's mode has already changed. Updating mSizeMode here
// insures the SetSizeMode call is a no-op. Addresses a bug on Win7 related
// to window docking. (bug 489258)
mSizeMode = event.mSizeMode;
// If !sTrimOnMinimize, we minimize windows using SW_SHOWMINIMIZED (See
// SetSizeMode for internal calls, and WM_SYSCOMMAND for external). This
// prevents the working set from being trimmed but keeps the window active.
// After the window is minimized, we need to do some touch up work on the
// active window. (bugs 76831 & 499816)
if (!sTrimOnMinimize && nsSizeMode_Minimized == event.mSizeMode)
ActivateOtherWindowHelper(mWnd);
#ifdef WINSTATE_DEBUG_OUTPUT
switch (mSizeMode) {
case nsSizeMode_Normal:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** mSizeMode: nsSizeMode_Normal\n"));
break;
case nsSizeMode_Minimized:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** mSizeMode: nsSizeMode_Minimized\n"));
break;
case nsSizeMode_Maximized:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** mSizeMode: nsSizeMode_Maximized\n");
break;
default:
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("*** mSizeMode: ??????\n");
break;
};
#endif
InitEvent(event);
result = DispatchWindowEvent(&event);
// Skip window size change events below on minimization.
if (mSizeMode == nsSizeMode_Minimized)
return;
}
// Handle window size changes
if (!(wp->flags & SWP_NOSIZE)) {
RECT r;
PRInt32 newWidth, newHeight;
::GetWindowRect(mWnd, &r);
newWidth = r.right - r.left;
newHeight = r.bottom - r.top;
nsIntRect rect(wp->x, wp->y, newWidth, newHeight);
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(newWidth, newHeight);
#endif
if (newWidth > mLastSize.width)
{
RECT drect;
// getting wider
drect.left = wp->x + mLastSize.width;
drect.top = wp->y;
drect.right = drect.left + (newWidth - mLastSize.width);
drect.bottom = drect.top + newHeight;
::RedrawWindow(mWnd, &drect, NULL,
RDW_INVALIDATE |
RDW_NOERASE |
RDW_NOINTERNALPAINT |
RDW_ERASENOW |
RDW_ALLCHILDREN);
}
if (newHeight > mLastSize.height)
{
RECT drect;
// getting taller
drect.left = wp->x;
drect.top = wp->y + mLastSize.height;
drect.right = drect.left + newWidth;
drect.bottom = drect.top + (newHeight - mLastSize.height);
::RedrawWindow(mWnd, &drect, NULL,
RDW_INVALIDATE |
RDW_NOERASE |
RDW_NOINTERNALPAINT |
RDW_ERASENOW |
RDW_ALLCHILDREN);
}
mBounds.width = newWidth;
mBounds.height = newHeight;
mLastSize.width = newWidth;
mLastSize.height = newHeight;
#ifdef WINSTATE_DEBUG_OUTPUT
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("*** Resize window: %d x %d x %d x %d\n", wp->x, wp->y,
newWidth, newHeight));
#endif
// If a maximized window is resized, recalculate the non-client margins and
// ensure a 1 pixel margin at screen bottom to allow taskbar unhiding to
// work properly.
if (mSizeMode == nsSizeMode_Maximized) {
if (UpdateNonClientMargins(nsSizeMode_Maximized, true)) {
// gecko resize event already sent by UpdateNonClientMargins.
result = true;
return;
}
}
// Recalculate the width and height based on the client area for gecko events.
if (::GetClientRect(mWnd, &r)) {
rect.width = r.right - r.left;
rect.height = r.bottom - r.top;
}
// Send a gecko resize event
result = OnResize(rect);
}
}
// static
void nsWindow::ActivateOtherWindowHelper(HWND aWnd)
{
// Find the next window that is enabled, visible, and not minimized.
HWND hwndBelow = ::GetNextWindow(aWnd, GW_HWNDNEXT);
while (hwndBelow && (!::IsWindowEnabled(hwndBelow) || !::IsWindowVisible(hwndBelow) ||
::IsIconic(hwndBelow))) {
hwndBelow = ::GetNextWindow(hwndBelow, GW_HWNDNEXT);
}
// Push ourselves to the bottom of the stack, then activate the
// next window.
::SetWindowPos(aWnd, HWND_BOTTOM, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
if (hwndBelow)
::SetForegroundWindow(hwndBelow);
// Play the minimize sound while we're here, since that is also
// forgotten when we use SW_SHOWMINIMIZED.
nsCOMPtr<nsISound> sound(do_CreateInstance("@mozilla.org/sound;1"));
if (sound) {
sound->PlaySystemSound(NS_LITERAL_STRING("Minimize"));
}
}
void nsWindow::OnWindowPosChanging(LPWINDOWPOS& info)
{
// Update non-client margins if the frame size is changing, and let the
// browser know we are changing size modes, so alternative css can kick in.
// If we're going into fullscreen mode, ignore this, since it'll reset
// margins to normal mode.
if ((info->flags & SWP_FRAMECHANGED && !(info->flags & SWP_NOSIZE)) &&
mSizeMode != nsSizeMode_Fullscreen) {
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
PRInt32 sizeMode;
if (pl.showCmd == SW_SHOWMAXIMIZED)
sizeMode = (mFullscreenMode ? nsSizeMode_Fullscreen : nsSizeMode_Maximized);
else if (pl.showCmd == SW_SHOWMINIMIZED)
sizeMode = nsSizeMode_Minimized;
else if (mFullscreenMode)
sizeMode = nsSizeMode_Fullscreen;
else
sizeMode = nsSizeMode_Normal;
nsSizeModeEvent event(true, NS_SIZEMODE, this);
InitEvent(event);
event.mSizeMode = static_cast<nsSizeMode>(sizeMode);
DispatchWindowEvent(&event);
UpdateNonClientMargins(sizeMode, false);
}
// enforce local z-order rules
if (!(info->flags & SWP_NOZORDER)) {
HWND hwndAfter = info->hwndInsertAfter;
nsZLevelEvent event(true, NS_SETZLEVEL, this);
nsWindow *aboveWindow = 0;
InitEvent(event);
if (hwndAfter == HWND_BOTTOM)
event.mPlacement = nsWindowZBottom;
else if (hwndAfter == HWND_TOP || hwndAfter == HWND_TOPMOST || hwndAfter == HWND_NOTOPMOST)
event.mPlacement = nsWindowZTop;
else {
event.mPlacement = nsWindowZRelative;
aboveWindow = WinUtils::GetNSWindowPtr(hwndAfter);
}
event.mReqBelow = aboveWindow;
event.mActualBelow = nsnull;
event.mImmediate = false;
event.mAdjusted = false;
DispatchWindowEvent(&event);
if (event.mAdjusted) {
if (event.mPlacement == nsWindowZBottom)
info->hwndInsertAfter = HWND_BOTTOM;
else if (event.mPlacement == nsWindowZTop)
info->hwndInsertAfter = HWND_TOP;
else {
info->hwndInsertAfter = (HWND)event.mActualBelow->GetNativeData(NS_NATIVE_WINDOW);
}
}
NS_IF_RELEASE(event.mActualBelow);
}
// prevent rude external programs from making hidden window visible
if (mWindowType == eWindowType_invisible)
info->flags &= ~SWP_SHOWWINDOW;
}
void nsWindow::UserActivity()
{
// Check if we have the idle service, if not we try to get it.
if (!mIdleService) {
mIdleService = do_GetService("@mozilla.org/widget/idleservice;1");
}
// Check that we now have the idle service.
if (mIdleService) {
mIdleService->ResetIdleTimeOut();
}
}
bool nsWindow::OnTouch(WPARAM wParam, LPARAM lParam)
{
PRUint32 cInputs = LOWORD(wParam);
PTOUCHINPUT pInputs = new TOUCHINPUT[cInputs];
if (mGesture.GetTouchInputInfo((HTOUCHINPUT)lParam, cInputs, pInputs)) {
for (PRUint32 i = 0; i < cInputs; i++) {
PRUint32 msg;
if (pInputs[i].dwFlags & TOUCHEVENTF_MOVE) {
msg = NS_MOZTOUCH_MOVE;
} else if (pInputs[i].dwFlags & TOUCHEVENTF_DOWN) {
msg = NS_MOZTOUCH_DOWN;
} else if (pInputs[i].dwFlags & TOUCHEVENTF_UP) {
msg = NS_MOZTOUCH_UP;
} else {
continue;
}
nsPointWin touchPoint;
touchPoint.x = TOUCH_COORD_TO_PIXEL(pInputs[i].x);
touchPoint.y = TOUCH_COORD_TO_PIXEL(pInputs[i].y);
touchPoint.ScreenToClient(mWnd);
nsMozTouchEvent touchEvent(true, msg, this, pInputs[i].dwID);
touchEvent.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
touchEvent.refPoint = touchPoint;
nsEventStatus status;
DispatchEvent(&touchEvent, status);
}
}
delete [] pInputs;
mGesture.CloseTouchInputHandle((HTOUCHINPUT)lParam);
return true;
}
// Gesture event processing. Handles WM_GESTURE events.
bool nsWindow::OnGesture(WPARAM wParam, LPARAM lParam)
{
// Treatment for pan events which translate into scroll events:
if (mGesture.IsPanEvent(lParam)) {
nsMouseScrollEvent event(true, NS_MOUSE_PIXEL_SCROLL, this);
if ( !mGesture.ProcessPanMessage(mWnd, wParam, lParam) )
return false; // ignore
nsEventStatus status;
event.isShift = IS_VK_DOWN(NS_VK_SHIFT);
event.isControl = IS_VK_DOWN(NS_VK_CONTROL);
event.isMeta = false;
event.isAlt = IS_VK_DOWN(NS_VK_ALT);
event.button = 0;
event.time = ::GetMessageTime();
event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
bool endFeedback = true;
PRInt32 scrollOverflowX = 0;
PRInt32 scrollOverflowY = 0;
if (mGesture.PanDeltaToPixelScrollX(event)) {
DispatchEvent(&event, status);
scrollOverflowX = event.scrollOverflow;
}
if (mGesture.PanDeltaToPixelScrollY(event)) {
DispatchEvent(&event, status);
scrollOverflowY = event.scrollOverflow;
}
if (mDisplayPanFeedback) {
mGesture.UpdatePanFeedbackX(mWnd, scrollOverflowX, endFeedback);
mGesture.UpdatePanFeedbackY(mWnd, scrollOverflowY, endFeedback);
mGesture.PanFeedbackFinalize(mWnd, endFeedback);
}
mGesture.CloseGestureInfoHandle((HGESTUREINFO)lParam);
return true;
}
// Other gestures translate into simple gesture events:
nsSimpleGestureEvent event(true, 0, this, 0, 0.0);
if ( !mGesture.ProcessGestureMessage(mWnd, wParam, lParam, event) ) {
return false; // fall through to DefWndProc
}
// Polish up and send off the new event
event.isShift = IS_VK_DOWN(NS_VK_SHIFT);
event.isControl = IS_VK_DOWN(NS_VK_CONTROL);
event.isMeta = false;
event.isAlt = IS_VK_DOWN(NS_VK_ALT);
event.button = 0;
event.time = ::GetMessageTime();
event.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
nsEventStatus status;
DispatchEvent(&event, status);
if (status == nsEventStatus_eIgnore) {
return false; // Ignored, fall through
}
// Only close this if we process and return true.
mGesture.CloseGestureInfoHandle((HGESTUREINFO)lParam);
return true; // Handled
}
/* static */ void
nsWindow::InitMouseWheelScrollData()
{
if (!sNeedsToInitMouseWheelSettings) {
return;
}
sNeedsToInitMouseWheelSettings = false;
ResetRemainingWheelDelta();
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLLINES, 0,
&sMouseWheelScrollLines, 0)) {
NS_WARNING("Failed to get SPI_GETWHEELSCROLLLINES");
sMouseWheelScrollLines = 3;
} else if (sMouseWheelScrollLines > WHEEL_DELTA) {
// sMouseWheelScrollLines usually equals 3 or 0 (for no scrolling)
// However, if sMouseWheelScrollLines > WHEEL_DELTA, we assume that
// the mouse driver wants a page scroll. The docs state that
// sMouseWheelScrollLines should explicitly equal WHEEL_PAGESCROLL, but
// since some mouse drivers use an arbitrary large number instead,
// we have to handle that as well.
sMouseWheelScrollLines = WHEEL_PAGESCROLL;
}
if (!::SystemParametersInfo(SPI_GETWHEELSCROLLCHARS, 0,
&sMouseWheelScrollChars, 0)) {
NS_ASSERTION(WinUtils::GetWindowsVersion() < WinUtils::VISTA_VERSION,
"Failed to get SPI_GETWHEELSCROLLCHARS");
sMouseWheelScrollChars = 1;
} else if (sMouseWheelScrollChars > WHEEL_DELTA) {
// See the comments for the case sMouseWheelScrollLines > WHEEL_DELTA.
sMouseWheelScrollChars = WHEEL_PAGESCROLL;
}
sEnablePixelScrolling =
Preferences::GetBool("mousewheel.enable_pixel_scrolling", true);
}
/* static */
void
nsWindow::ResetRemainingWheelDelta()
{
sRemainingDeltaForPixel = 0;
sRemainingDeltaForScroll = 0;
sLastMouseWheelWnd = NULL;
}
static PRInt32 RoundDelta(double aDelta)
{
return aDelta >= 0 ? (PRInt32)floor(aDelta) : (PRInt32)ceil(aDelta);
}
/**
* OnMouseWheelInternal - mouse wheel event processing.
* aMessage may be WM_MOUSEWHEEL or WM_MOUSEHWHEEL but this is called when
* ProcessMessage() handles MOZ_WM_MOUSEVWHEEL or MOZ_WM_MOUSEHWHEEL.
*/
void
nsWindow::OnMouseWheelInternal(UINT aMessage, WPARAM aWParam, LPARAM aLParam,
LRESULT *aRetValue)
{
InitMouseWheelScrollData();
bool isVertical = (aMessage == WM_MOUSEWHEEL);
if ((isVertical && sMouseWheelScrollLines == 0) ||
(!isVertical && sMouseWheelScrollChars == 0)) {
// XXX I think that we should dispatch mouse wheel events even if the
// operation will not scroll because the wheel operation really happened
// and web application may want to handle the event for non-scroll action.
ResetRemainingWheelDelta();
*aRetValue = isVertical ? TRUE : FALSE; // means we don't process it
return;
}
PRInt32 nativeDelta = (short)HIWORD(aWParam);
if (!nativeDelta) {
*aRetValue = isVertical ? TRUE : FALSE; // means we don't process it
ResetRemainingWheelDelta();
return; // We cannot process this message
}
bool isPageScroll =
((isVertical && sMouseWheelScrollLines == WHEEL_PAGESCROLL) ||
(!isVertical && sMouseWheelScrollChars == WHEEL_PAGESCROLL));
// Discard the remaining delta if current wheel message and last one are
// received by different window or to scroll different direction or
// different unit scroll. Furthermore, if the last event was too old.
PRUint32 now = PR_IntervalToMilliseconds(PR_IntervalNow());
if (sLastMouseWheelWnd &&
(sLastMouseWheelWnd != mWnd ||
sLastMouseWheelDeltaIsPositive != (nativeDelta > 0) ||
sLastMouseWheelOrientationIsVertical != isVertical ||
sLastMouseWheelUnitIsPage != isPageScroll ||
now - sLastMouseWheelTime > 1500)) {
ResetRemainingWheelDelta();
}
sLastMouseWheelWnd = mWnd;
sLastMouseWheelDeltaIsPositive = (nativeDelta > 0);
sLastMouseWheelOrientationIsVertical = isVertical;
sLastMouseWheelUnitIsPage = isPageScroll;
sLastMouseWheelTime = now;
*aRetValue = isVertical ? FALSE : TRUE; // means we process this message
nsModifierKeyState modKeyState;
// Our positive delta value means to bottom or right.
// But positive nativeDelta value means to top or right.
// Use orienter for computing our delta value with native delta value.
PRInt32 orienter = isVertical ? -1 : 1;
// Assume the Control key is down if the Elantech touchpad has sent the
// mis-ordered WM_KEYDOWN/WM_MOUSEWHEEL messages. (See the comment in
// OnKeyUp.)
bool isControl;
if (mAssumeWheelIsZoomUntil &&
static_cast<DWORD>(::GetMessageTime()) < mAssumeWheelIsZoomUntil) {
isControl = true;
} else {
isControl = modKeyState.mIsControlDown;
}
// Create line (or page) scroll event.
nsMouseScrollEvent scrollEvent(true, NS_MOUSE_SCROLL, this);
// Initialize common members on line scroll event, pixel scroll event and
// test event.
InitEvent(scrollEvent);
scrollEvent.isShift = modKeyState.mIsShiftDown;
scrollEvent.isControl = isControl;
scrollEvent.isMeta = false;
scrollEvent.isAlt = modKeyState.mIsAltDown;
// Before dispatching line scroll event, we should get the current scroll
// event target information for pixel scroll.
bool dispatchPixelScrollEvent = false;
bool reversePixelScrollDirection = false;
PRInt32 actualScrollAction = nsQueryContentEvent::SCROLL_ACTION_NONE;
PRInt32 pixelsPerUnit = 0;
// the amount is the number of lines (or pages) per WHEEL_DELTA
PRInt32 computedScrollAmount = isPageScroll ? 1 :
(isVertical ? sMouseWheelScrollLines : sMouseWheelScrollChars);
if (sEnablePixelScrolling) {
nsMouseScrollEvent testEvent(true, NS_MOUSE_SCROLL, this);
InitEvent(testEvent);
testEvent.scrollFlags = isPageScroll ? nsMouseScrollEvent::kIsFullPage : 0;
testEvent.scrollFlags |= isVertical ? nsMouseScrollEvent::kIsVertical :
nsMouseScrollEvent::kIsHorizontal;
testEvent.isShift = scrollEvent.isShift;
testEvent.isControl = scrollEvent.isControl;
testEvent.isMeta = scrollEvent.isMeta;
testEvent.isAlt = scrollEvent.isAlt;
testEvent.delta = computedScrollAmount;
if ((isVertical && sLastMouseWheelDeltaIsPositive) ||
(!isVertical && !sLastMouseWheelDeltaIsPositive)) {
testEvent.delta *= -1;
}
nsQueryContentEvent queryEvent(true, NS_QUERY_SCROLL_TARGET_INFO, this);
InitEvent(queryEvent);
queryEvent.InitForQueryScrollTargetInfo(&testEvent);
DispatchWindowEvent(&queryEvent);
// If the necessary interger isn't larger than 0, we should assume that
// the event failed for us.
if (queryEvent.mSucceeded) {
actualScrollAction = queryEvent.mReply.mComputedScrollAction;
if (actualScrollAction == nsQueryContentEvent::SCROLL_ACTION_PAGE) {
if (isVertical) {
pixelsPerUnit = queryEvent.mReply.mPageHeight;
} else {
pixelsPerUnit = queryEvent.mReply.mPageWidth;
}
} else {
pixelsPerUnit = queryEvent.mReply.mLineHeight;
}
computedScrollAmount = queryEvent.mReply.mComputedScrollAmount;
if (pixelsPerUnit > 0 && computedScrollAmount != 0 &&
actualScrollAction != nsQueryContentEvent::SCROLL_ACTION_NONE) {
dispatchPixelScrollEvent = true;
// If original delta's sign and computed delta's one are different,
// we need to reverse the pixel scroll direction at dispatching it.
reversePixelScrollDirection =
(testEvent.delta > 0 && computedScrollAmount < 0) ||
(testEvent.delta < 0 && computedScrollAmount > 0);
// scroll amount must be positive.
computedScrollAmount = NS_ABS(computedScrollAmount);
}
}
}
// If we dispatch pixel scroll event after the line scroll event,
// we should set kHasPixels flag to the line scroll event.
scrollEvent.scrollFlags =
dispatchPixelScrollEvent ? nsMouseScrollEvent::kHasPixels : 0;
PRInt32 nativeDeltaForScroll = nativeDelta + sRemainingDeltaForScroll;
// NOTE: Don't use computedScrollAmount for computing the delta value of
// line/page scroll event. The value will be recomputed in ESM.
if (isPageScroll) {
scrollEvent.scrollFlags |= nsMouseScrollEvent::kIsFullPage;
if (isVertical) {
scrollEvent.scrollFlags |= nsMouseScrollEvent::kIsVertical;
} else {
scrollEvent.scrollFlags |= nsMouseScrollEvent::kIsHorizontal;
}
scrollEvent.delta = nativeDeltaForScroll * orienter / WHEEL_DELTA;
PRInt32 recomputedNativeDelta = scrollEvent.delta * orienter / WHEEL_DELTA;
sRemainingDeltaForScroll = nativeDeltaForScroll - recomputedNativeDelta;
} else {
double deltaPerUnit;
if (isVertical) {
scrollEvent.scrollFlags |= nsMouseScrollEvent::kIsVertical;
deltaPerUnit = (double)WHEEL_DELTA / sMouseWheelScrollLines;
} else {
scrollEvent.scrollFlags |= nsMouseScrollEvent::kIsHorizontal;
deltaPerUnit = (double)WHEEL_DELTA / sMouseWheelScrollChars;
}
scrollEvent.delta =
RoundDelta((double)nativeDeltaForScroll * orienter / deltaPerUnit);
PRInt32 recomputedNativeDelta =
(PRInt32)(scrollEvent.delta * orienter * deltaPerUnit);
sRemainingDeltaForScroll = nativeDeltaForScroll - recomputedNativeDelta;
}
if (scrollEvent.delta) {
DispatchWindowEvent(&scrollEvent);
if (mOnDestroyCalled) {
ResetRemainingWheelDelta();
return;
}
}
// If the query event failed, we cannot send pixel events.
if (!dispatchPixelScrollEvent) {
sRemainingDeltaForPixel = 0;
return;
}
nsMouseScrollEvent pixelEvent(true, NS_MOUSE_PIXEL_SCROLL, this);
InitEvent(pixelEvent);
pixelEvent.scrollFlags = nsMouseScrollEvent::kAllowSmoothScroll;
pixelEvent.scrollFlags |= isVertical ?
nsMouseScrollEvent::kIsVertical : nsMouseScrollEvent::kIsHorizontal;
if (actualScrollAction == nsQueryContentEvent::SCROLL_ACTION_PAGE) {
pixelEvent.scrollFlags |= nsMouseScrollEvent::kIsFullPage;
}
// Use same modifier state for pixel scroll event.
pixelEvent.isShift = scrollEvent.isShift;
pixelEvent.isControl = scrollEvent.isControl;
pixelEvent.isMeta = scrollEvent.isMeta;
pixelEvent.isAlt = scrollEvent.isAlt;
PRInt32 nativeDeltaForPixel = nativeDelta + sRemainingDeltaForPixel;
// Pixel scroll event won't be recomputed the scroll amout and direction by
// ESM. Therefore, we need to set the computed amout and direction here.
PRInt32 orienterForPixel = reversePixelScrollDirection ? -orienter : orienter;
double deltaPerPixel =
(double)WHEEL_DELTA / computedScrollAmount / pixelsPerUnit;
pixelEvent.delta =
RoundDelta((double)nativeDeltaForPixel * orienterForPixel / deltaPerPixel);
PRInt32 recomputedNativeDelta =
(PRInt32)(pixelEvent.delta * orienterForPixel * deltaPerPixel);
sRemainingDeltaForPixel = nativeDeltaForPixel - recomputedNativeDelta;
if (pixelEvent.delta != 0) {
DispatchWindowEvent(&pixelEvent);
}
return;
}
static bool
StringCaseInsensitiveEquals(const PRUnichar* aChars1, const PRUint32 aNumChars1,
const PRUnichar* aChars2, const PRUint32 aNumChars2)
{
if (aNumChars1 != aNumChars2)
return false;
nsCaseInsensitiveStringComparator comp;
return comp(aChars1, aChars2, aNumChars1, aNumChars2) == 0;
}
UINT nsWindow::MapFromNativeToDOM(UINT aNativeKeyCode)
{
switch (aNativeKeyCode) {
case VK_OEM_1: return NS_VK_SEMICOLON; // 0xBA, For the US standard keyboard, the ';:' key
case VK_OEM_PLUS: return NS_VK_ADD; // 0xBB, For any country/region, the '+' key
case VK_OEM_MINUS: return NS_VK_SUBTRACT; // 0xBD, For any country/region, the '-' key
}
return aNativeKeyCode;
}
/* static */
bool nsWindow::IsRedirectedKeyDownMessage(const MSG &aMsg)
{
return (aMsg.message == WM_KEYDOWN || aMsg.message == WM_SYSKEYDOWN) &&
(sRedirectedKeyDown.message == aMsg.message &&
WinUtils::GetScanCode(sRedirectedKeyDown.lParam) ==
WinUtils::GetScanCode(aMsg.lParam));
}
void
nsWindow::PerformElantechSwipeGestureHack(UINT& aVirtualKeyCode,
nsModifierKeyState& aModKeyState)
{
// The Elantech touchpad driver understands three-finger swipe left and
// right gestures, and translates them into Page Up and Page Down key
// events for most applications. For Firefox 3.6, it instead sends
// Alt+Left and Alt+Right to trigger browser back/forward actions. As
// with the Thinkpad Driver hack in nsWindow::Create, the change in
// HWND structure makes Firefox not trigger the driver's heuristics
// any longer.
//
// The Elantech driver actually sends these messages for a three-finger
// swipe right:
//
// WM_KEYDOWN virtual_key = 0xCC or 0xFF (depending on driver version)
// WM_KEYDOWN virtual_key = VK_NEXT
// WM_KEYUP virtual_key = VK_NEXT
// WM_KEYUP virtual_key = 0xCC or 0xFF
//
// so we use the 0xCC or 0xFF key modifier to detect whether the Page Down
// is due to the gesture rather than a regular Page Down keypress. We then
// pretend that we were went an Alt+Right keystroke instead. Similarly
// for VK_PRIOR and Alt+Left.
if ((aVirtualKeyCode == VK_NEXT || aVirtualKeyCode == VK_PRIOR) &&
(IS_VK_DOWN(0xFF) || IS_VK_DOWN(0xCC))) {
aModKeyState.mIsAltDown = true;
aVirtualKeyCode = aVirtualKeyCode == VK_NEXT ? VK_RIGHT : VK_LEFT;
}
}
/**
* nsWindow::OnKeyDown peeks into the message queue and pulls out
* WM_CHAR messages for processing. During testing we don't want to
* mess with the real message queue. Instead we pass a
* pseudo-WM_CHAR-message using this structure, and OnKeyDown will use
* that as if it was in the message queue, and refrain from actually
* looking at or touching the message queue.
*/
LRESULT nsWindow::OnKeyDown(const MSG &aMsg,
nsModifierKeyState &aModKeyState,
bool *aEventDispatched,
nsFakeCharMessage* aFakeCharMessage)
{
UINT virtualKeyCode =
aMsg.wParam != VK_PROCESSKEY ? aMsg.wParam : ::ImmGetVirtualKey(mWnd);
gKbdLayout.OnKeyDown(virtualKeyCode);
if (sUseElantechSwipeHack) {
PerformElantechSwipeGestureHack(virtualKeyCode, aModKeyState);
}
// Use only DOMKeyCode for XP processing.
// Use virtualKeyCode for gKbdLayout and native processing.
UINT DOMKeyCode = nsIMM32Handler::IsComposingOn(this) ?
virtualKeyCode : MapFromNativeToDOM(virtualKeyCode);
#ifdef DEBUG
//PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("In OnKeyDown virt: %d\n", DOMKeyCode));
#endif
static bool sRedirectedKeyDownEventPreventedDefault = false;
bool noDefault;
if (aFakeCharMessage || !IsRedirectedKeyDownMessage(aMsg)) {
nsIMEContext IMEContext(mWnd);
noDefault =
DispatchKeyEvent(NS_KEY_DOWN, 0, nsnull, DOMKeyCode, &aMsg, aModKeyState);
if (aEventDispatched) {
*aEventDispatched = true;
}
// If IMC wasn't associated to the window but is associated it now (i.e.,
// focus is moved from a non-editable editor to an editor by keydown
// event handler), WM_CHAR and WM_SYSCHAR shouldn't cause first character
// inputting if IME is opened. But then, we should redirect the native
// keydown message to IME.
// However, note that if focus has been already moved to another
// application, we shouldn't redirect the message to it because the keydown
// message is processed by us, so, nobody shouldn't process it.
HWND focusedWnd = ::GetFocus();
nsIMEContext newIMEContext(mWnd);
if (!noDefault && !aFakeCharMessage && focusedWnd && !PluginHasFocus() &&
!IMEContext.get() && newIMEContext.get()) {
RemoveNextCharMessage(focusedWnd);
INPUT keyinput;
keyinput.type = INPUT_KEYBOARD;
keyinput.ki.wVk = aMsg.wParam;
keyinput.ki.wScan = WinUtils::GetScanCode(aMsg.lParam);
keyinput.ki.dwFlags = KEYEVENTF_SCANCODE;
if (WinUtils::IsExtendedScanCode(aMsg.lParam)) {
keyinput.ki.dwFlags |= KEYEVENTF_EXTENDEDKEY;
}
keyinput.ki.time = 0;
keyinput.ki.dwExtraInfo = NULL;
sRedirectedKeyDownEventPreventedDefault = noDefault;
sRedirectedKeyDown = aMsg;
::SendInput(1, &keyinput, sizeof(keyinput));
// Return here. We shouldn't dispatch keypress event for this WM_KEYDOWN.
// If it's needed, it will be dispatched after next (redirected)
// WM_KEYDOWN.
return true;
}
if (mOnDestroyCalled) {
// If this was destroyed by the keydown event handler, we shouldn't
// dispatch keypress event on this window.
return true;
}
} else {
noDefault = sRedirectedKeyDownEventPreventedDefault;
// If this is redirected keydown message, we have dispatched the keydown
// event already.
if (aEventDispatched) {
*aEventDispatched = true;
}
}
ForgetRedirectedKeyDownMessage();
// If the key was processed by IME, we shouldn't dispatch keypress event.
if (aMsg.wParam == VK_PROCESSKEY) {
return noDefault;
}
// If we won't be getting a WM_CHAR, WM_SYSCHAR or WM_DEADCHAR, synthesize a keypress
// for almost all keys
switch (DOMKeyCode) {
case NS_VK_SHIFT:
case NS_VK_CONTROL:
case NS_VK_ALT:
case NS_VK_CAPS_LOCK:
case NS_VK_NUM_LOCK:
case NS_VK_SCROLL_LOCK: return noDefault;
}
PRUint32 extraFlags = (noDefault ? NS_EVENT_FLAG_NO_DEFAULT : 0);
MSG msg;
BOOL gotMsg = aFakeCharMessage ||
::PeekMessageW(&msg, mWnd, WM_KEYFIRST, WM_KEYLAST, PM_NOREMOVE | PM_NOYIELD);
// Enter and backspace are always handled here to avoid for example the
// confusion between ctrl-enter and ctrl-J.
if (DOMKeyCode == NS_VK_RETURN || DOMKeyCode == NS_VK_BACK ||
((aModKeyState.mIsControlDown || aModKeyState.mIsAltDown)
&& !gKbdLayout.IsDeadKey() && KeyboardLayout::IsPrintableCharKey(virtualKeyCode)))
{
// Remove a possible WM_CHAR or WM_SYSCHAR messages from the message queue.
// They can be more than one because of:
// * Dead-keys not pairing with base character
// * Some keyboard layouts may map up to 4 characters to the single key
bool anyCharMessagesRemoved = false;
if (aFakeCharMessage) {
RemoveMessageAndDispatchPluginEvent(WM_KEYFIRST, WM_KEYLAST,
aFakeCharMessage);
anyCharMessagesRemoved = true;
} else {
while (gotMsg && (msg.message == WM_CHAR || msg.message == WM_SYSCHAR))
{
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("%s charCode=%d scanCode=%d\n", msg.message == WM_SYSCHAR ?
"WM_SYSCHAR" : "WM_CHAR",
msg.wParam, HIWORD(msg.lParam) & 0xFF));
RemoveMessageAndDispatchPluginEvent(WM_KEYFIRST, WM_KEYLAST);
anyCharMessagesRemoved = true;
gotMsg = ::PeekMessageW (&msg, mWnd, WM_KEYFIRST, WM_KEYLAST, PM_NOREMOVE | PM_NOYIELD);
}
}
if (!anyCharMessagesRemoved && DOMKeyCode == NS_VK_BACK &&
nsIMM32Handler::IsDoingKakuteiUndo(mWnd)) {
NS_ASSERTION(!aFakeCharMessage,
"We shouldn't be touching the real msg queue");
RemoveMessageAndDispatchPluginEvent(WM_CHAR, WM_CHAR);
}
}
else if (gotMsg &&
(aFakeCharMessage ||
msg.message == WM_CHAR || msg.message == WM_SYSCHAR || msg.message == WM_DEADCHAR)) {
if (aFakeCharMessage) {
MSG msg = aFakeCharMessage->GetCharMessage(mWnd);
return OnCharRaw(aFakeCharMessage->mCharCode,
aFakeCharMessage->mScanCode,
aModKeyState, extraFlags, &msg);
}
// If prevent default set for keydown, do same for keypress
::GetMessageW(&msg, mWnd, msg.message, msg.message);
if (msg.message == WM_DEADCHAR) {
if (!PluginHasFocus())
return false;
// We need to send the removed message to focused plug-in.
DispatchPluginEvent(msg);
return noDefault;
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("%s charCode=%d scanCode=%d\n",
msg.message == WM_SYSCHAR ? "WM_SYSCHAR" : "WM_CHAR",
msg.wParam, HIWORD(msg.lParam) & 0xFF));
BOOL result = OnChar(msg, aModKeyState, nsnull, extraFlags);
// If a syschar keypress wasn't processed, Windows may want to
// handle it to activate a native menu.
if (!result && msg.message == WM_SYSCHAR)
::DefWindowProcW(mWnd, msg.message, msg.wParam, msg.lParam);
return result;
}
else if (!aModKeyState.mIsControlDown && !aModKeyState.mIsAltDown &&
(KeyboardLayout::IsPrintableCharKey(virtualKeyCode) ||
KeyboardLayout::IsNumpadKey(virtualKeyCode)))
{
// If this is simple KeyDown event but next message is not WM_CHAR,
// this event may not input text, so we should ignore this event.
// See bug 314130.
return PluginHasFocus() && noDefault;
}
if (gKbdLayout.IsDeadKey ())
return PluginHasFocus() && noDefault;
PRUint8 shiftStates[5];
PRUnichar uniChars[5];
PRUnichar shiftedChars[5] = {0, 0, 0, 0, 0};
PRUnichar unshiftedChars[5] = {0, 0, 0, 0, 0};
PRUnichar shiftedLatinChar = 0;
PRUnichar unshiftedLatinChar = 0;
PRUint32 numOfUniChars = 0;
PRUint32 numOfShiftedChars = 0;
PRUint32 numOfUnshiftedChars = 0;
PRUint32 numOfShiftStates = 0;
switch (virtualKeyCode) {
// keys to be sent as characters
case VK_ADD: uniChars [0] = '+'; numOfUniChars = 1; break;
case VK_SUBTRACT: uniChars [0] = '-'; numOfUniChars = 1; break;
case VK_DIVIDE: uniChars [0] = '/'; numOfUniChars = 1; break;
case VK_MULTIPLY: uniChars [0] = '*'; numOfUniChars = 1; break;
case VK_NUMPAD0:
case VK_NUMPAD1:
case VK_NUMPAD2:
case VK_NUMPAD3:
case VK_NUMPAD4:
case VK_NUMPAD5:
case VK_NUMPAD6:
case VK_NUMPAD7:
case VK_NUMPAD8:
case VK_NUMPAD9:
uniChars [0] = virtualKeyCode - VK_NUMPAD0 + '0';
numOfUniChars = 1;
break;
default:
if (KeyboardLayout::IsPrintableCharKey(virtualKeyCode)) {
numOfUniChars = numOfShiftStates =
gKbdLayout.GetUniChars(uniChars, shiftStates,
ArrayLength(uniChars));
}
if (aModKeyState.mIsControlDown ^ aModKeyState.mIsAltDown) {
PRUint8 capsLockState = (::GetKeyState(VK_CAPITAL) & 1) ? eCapsLock : 0;
numOfUnshiftedChars =
gKbdLayout.GetUniCharsWithShiftState(virtualKeyCode, capsLockState,
unshiftedChars, ArrayLength(unshiftedChars));
numOfShiftedChars =
gKbdLayout.GetUniCharsWithShiftState(virtualKeyCode,
capsLockState | eShift,
shiftedChars, ArrayLength(shiftedChars));
// The current keyboard cannot input alphabets or numerics,
// we should append them for Shortcut/Access keys.
// E.g., for Cyrillic keyboard layout.
if (NS_VK_A <= DOMKeyCode && DOMKeyCode <= NS_VK_Z) {
shiftedLatinChar = unshiftedLatinChar = DOMKeyCode;
if (capsLockState)
shiftedLatinChar += 0x20;
else
unshiftedLatinChar += 0x20;
if (unshiftedLatinChar == unshiftedChars[0] &&
shiftedLatinChar == shiftedChars[0]) {
shiftedLatinChar = unshiftedLatinChar = 0;
}
} else {
PRUint16 ch = 0;
if (NS_VK_0 <= DOMKeyCode && DOMKeyCode <= NS_VK_9) {
ch = DOMKeyCode;
} else {
switch (virtualKeyCode) {
case VK_OEM_PLUS: ch = '+'; break;
case VK_OEM_MINUS: ch = '-'; break;
}
}
if (ch && unshiftedChars[0] != ch && shiftedChars[0] != ch) {
// Windows has assigned a virtual key code to the key even though
// the character can't be produced with this key. That probably
// means the character can't be produced with any key in the
// current layout and so the assignment is based on a QWERTY
// layout. Append this code so that users can access the shortcut.
unshiftedLatinChar = ch;
}
}
// If the charCode is not ASCII character, we should replace the
// charCode with ASCII character only when Ctrl is pressed.
// But don't replace the charCode when the charCode is not same as
// unmodified characters. In such case, Ctrl is sometimes used for a
// part of character inputting key combination like Shift.
if (aModKeyState.mIsControlDown) {
PRUint8 currentState = eCtrl;
if (aModKeyState.mIsShiftDown)
currentState |= eShift;
PRUint32 ch =
aModKeyState.mIsShiftDown ? shiftedLatinChar : unshiftedLatinChar;
if (ch &&
(numOfUniChars == 0 ||
StringCaseInsensitiveEquals(uniChars, numOfUniChars,
aModKeyState.mIsShiftDown ? shiftedChars : unshiftedChars,
aModKeyState.mIsShiftDown ? numOfShiftedChars :
numOfUnshiftedChars))) {
numOfUniChars = numOfShiftStates = 1;
uniChars[0] = ch;
shiftStates[0] = currentState;
}
}
}
}
if (numOfUniChars > 0 || numOfShiftedChars > 0 || numOfUnshiftedChars > 0) {
PRUint32 num = NS_MAX(numOfUniChars,
NS_MAX(numOfShiftedChars, numOfUnshiftedChars));
PRUint32 skipUniChars = num - numOfUniChars;
PRUint32 skipShiftedChars = num - numOfShiftedChars;
PRUint32 skipUnshiftedChars = num - numOfUnshiftedChars;
UINT keyCode = numOfUniChars == 0 ? DOMKeyCode : 0;
for (PRUint32 cnt = 0; cnt < num; cnt++) {
PRUint16 uniChar, shiftedChar, unshiftedChar;
uniChar = shiftedChar = unshiftedChar = 0;
if (skipUniChars <= cnt) {
if (cnt - skipUniChars < numOfShiftStates) {
// If key in combination with Alt and/or Ctrl produces a different
// character than without them then do not report these flags
// because it is separate keyboard layout shift state. If dead-key
// and base character does not produce a valid composite character
// then both produced dead-key character and following base
// character may have different modifier flags, too.
aModKeyState.mIsShiftDown =
(shiftStates[cnt - skipUniChars] & eShift) != 0;
aModKeyState.mIsControlDown =
(shiftStates[cnt - skipUniChars] & eCtrl) != 0;
aModKeyState.mIsAltDown =
(shiftStates[cnt - skipUniChars] & eAlt) != 0;
}
uniChar = uniChars[cnt - skipUniChars];
}
if (skipShiftedChars <= cnt)
shiftedChar = shiftedChars[cnt - skipShiftedChars];
if (skipUnshiftedChars <= cnt)
unshiftedChar = unshiftedChars[cnt - skipUnshiftedChars];
nsAutoTArray<nsAlternativeCharCode, 5> altArray;
if (shiftedChar || unshiftedChar) {
nsAlternativeCharCode chars(unshiftedChar, shiftedChar);
altArray.AppendElement(chars);
}
if (cnt == num - 1 && (unshiftedLatinChar || shiftedLatinChar)) {
nsAlternativeCharCode chars(unshiftedLatinChar, shiftedLatinChar);
altArray.AppendElement(chars);
}
DispatchKeyEvent(NS_KEY_PRESS, uniChar, &altArray,
keyCode, nsnull, aModKeyState, extraFlags);
}
} else {
DispatchKeyEvent(NS_KEY_PRESS, 0, nsnull, DOMKeyCode, nsnull, aModKeyState,
extraFlags);
}
return noDefault;
}
// OnKeyUp
LRESULT nsWindow::OnKeyUp(const MSG &aMsg,
nsModifierKeyState &aModKeyState,
bool *aEventDispatched)
{
UINT virtualKeyCode = aMsg.wParam;
if (sUseElantechSwipeHack) {
PerformElantechSwipeGestureHack(virtualKeyCode, aModKeyState);
}
if (sUseElantechPinchHack) {
// Version 8 of the Elantech touchpad driver sends these messages for
// zoom gestures:
//
// WM_KEYDOWN virtual_key = 0xCC time = 10
// WM_KEYDOWN virtual_key = VK_CONTROL time = 10
// WM_MOUSEWHEEL time = ::GetTickCount()
// WM_KEYUP virtual_key = VK_CONTROL time = 10
// WM_KEYUP virtual_key = 0xCC time = 10
//
// The result of this is that we process all of the WM_KEYDOWN/WM_KEYUP
// messages first because their timestamps make them appear to have
// been sent before the WM_MOUSEWHEEL message. To work around this,
// we store the current time when we process the WM_KEYUP message and
// assume that any WM_MOUSEWHEEL message with a timestamp before that
// time is one that should be processed as if the Control key was down.
if (virtualKeyCode == VK_CONTROL && aMsg.time == 10) {
// We look only at the bottom 31 bits of the system tick count since
// GetMessageTime returns a LONG, which is signed, so we want values
// that are more easily comparable.
mAssumeWheelIsZoomUntil = ::GetTickCount() & 0x7FFFFFFF;
}
}
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("nsWindow::OnKeyUp VK=%d\n", virtualKeyCode));
if (!nsIMM32Handler::IsComposingOn(this)) {
virtualKeyCode = MapFromNativeToDOM(virtualKeyCode);
}
if (aEventDispatched)
*aEventDispatched = true;
return DispatchKeyEvent(NS_KEY_UP, 0, nsnull, virtualKeyCode, &aMsg,
aModKeyState);
}
// OnChar
LRESULT nsWindow::OnChar(const MSG &aMsg, nsModifierKeyState &aModKeyState,
bool *aEventDispatched, PRUint32 aFlags)
{
return OnCharRaw(aMsg.wParam, HIWORD(aMsg.lParam) & 0xFF, aModKeyState,
aFlags, &aMsg, aEventDispatched);
}
// OnCharRaw
LRESULT nsWindow::OnCharRaw(UINT charCode, UINT aScanCode,
nsModifierKeyState &aModKeyState, PRUint32 aFlags,
const MSG *aMsg, bool *aEventDispatched)
{
// ignore [shift+]alt+space so the OS can handle it
if (aModKeyState.mIsAltDown && !aModKeyState.mIsControlDown &&
IS_VK_DOWN(NS_VK_SPACE)) {
return FALSE;
}
// Ignore Ctrl+Enter (bug 318235)
if (aModKeyState.mIsControlDown && charCode == 0xA) {
return FALSE;
}
// WM_CHAR with Control and Alt (== AltGr) down really means a normal character
bool saveIsAltDown = aModKeyState.mIsAltDown;
bool saveIsControlDown = aModKeyState.mIsControlDown;
if (aModKeyState.mIsAltDown && aModKeyState.mIsControlDown)
aModKeyState.mIsAltDown = aModKeyState.mIsControlDown = false;
wchar_t uniChar;
if (nsIMM32Handler::IsComposingOn(this)) {
ResetInputState();
}
if (aModKeyState.mIsControlDown && charCode <= 0x1A) { // Ctrl+A Ctrl+Z, see Programming Windows 3.1 page 110 for details
// need to account for shift here. bug 16486
if (aModKeyState.mIsShiftDown)
uniChar = charCode - 1 + 'A';
else
uniChar = charCode - 1 + 'a';
charCode = 0;
}
else if (aModKeyState.mIsControlDown && charCode <= 0x1F) {
// Fix for 50255 - <ctrl><[> and <ctrl><]> are not being processed.
// also fixes ctrl+\ (x1c), ctrl+^ (x1e) and ctrl+_ (x1f)
// for some reason the keypress handler need to have the uniChar code set
// with the addition of a upper case A not the lower case.
uniChar = charCode - 1 + 'A';
charCode = 0;
} else { // 0x20 - SPACE, 0x3D - EQUALS
if (charCode < 0x20 || (charCode == 0x3D && aModKeyState.mIsControlDown)) {
uniChar = 0;
} else {
uniChar = charCode;
charCode = 0;
}
}
// Keep the characters unshifted for shortcuts and accesskeys and make sure
// that numbers are always passed as such (among others: bugs 50255 and 351310)
if (uniChar && (aModKeyState.mIsControlDown || aModKeyState.mIsAltDown)) {
UINT virtualKeyCode = ::MapVirtualKeyEx(aScanCode, MAPVK_VSC_TO_VK,
gKbdLayout.GetLayout());
UINT unshiftedCharCode =
virtualKeyCode >= '0' && virtualKeyCode <= '9' ? virtualKeyCode :
aModKeyState.mIsShiftDown ? ::MapVirtualKeyEx(virtualKeyCode,
MAPVK_VK_TO_CHAR,
gKbdLayout.GetLayout()) : 0;
// ignore diacritics (top bit set) and key mapping errors (char code 0)
if ((INT)unshiftedCharCode > 0)
uniChar = unshiftedCharCode;
}
// Fix for bug 285161 (and 295095) which was caused by the initial fix for bug 178110.
// When pressing (alt|ctrl)+char, the char must be lowercase unless shift is
// pressed too.
if (!aModKeyState.mIsShiftDown && (saveIsAltDown || saveIsControlDown)) {
uniChar = towlower(uniChar);
}
bool result = DispatchKeyEvent(NS_KEY_PRESS, uniChar, nsnull,
charCode, aMsg, aModKeyState, aFlags);
if (aEventDispatched)
*aEventDispatched = true;
aModKeyState.mIsAltDown = saveIsAltDown;
aModKeyState.mIsControlDown = saveIsControlDown;
return result;
}
void
nsWindow::SetupKeyModifiersSequence(nsTArray<KeyPair>* aArray, PRUint32 aModifiers)
{
for (PRUint32 i = 0; i < ArrayLength(sModifierKeyMap); ++i) {
const PRUint32* map = sModifierKeyMap[i];
if (aModifiers & map[0]) {
aArray->AppendElement(KeyPair(map[1], map[2]));
}
}
}
nsresult
nsWindow::ConfigureChildren(const nsTArray<Configuration>& aConfigurations)
{
// XXXroc we could use BeginDeferWindowPos/DeferWindowPos/EndDeferWindowPos
// here, if that helps in some situations. So far I haven't seen a
// need.
for (PRUint32 i = 0; i < aConfigurations.Length(); ++i) {
const Configuration& configuration = aConfigurations[i];
nsWindow* w = static_cast<nsWindow*>(configuration.mChild);
NS_ASSERTION(w->GetParent() == this,
"Configured widget is not a child");
nsresult rv = w->SetWindowClipRegion(configuration.mClipRegion, true);
NS_ENSURE_SUCCESS(rv, rv);
nsIntRect bounds;
w->GetBounds(bounds);
if (bounds.Size() != configuration.mBounds.Size()) {
w->Resize(configuration.mBounds.x, configuration.mBounds.y,
configuration.mBounds.width, configuration.mBounds.height,
true);
} else if (bounds.TopLeft() != configuration.mBounds.TopLeft()) {
w->Move(configuration.mBounds.x, configuration.mBounds.y);
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D ||
GetLayerManager()->GetBackendType() != LayerManager::LAYERS_BASIC) {
// XXX - Workaround for Bug 587508. This will invalidate the part of the
// plugin window that might be touched by moving content somehow. The
// underlying problem should be found and fixed!
nsIntRegion r;
r.Sub(bounds, configuration.mBounds);
r.MoveBy(-bounds.x,
-bounds.y);
w->Invalidate(r.GetBounds());
}
}
rv = w->SetWindowClipRegion(configuration.mClipRegion, false);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
static HRGN
CreateHRGNFromArray(const nsTArray<nsIntRect>& aRects)
{
PRInt32 size = sizeof(RGNDATAHEADER) + sizeof(RECT)*aRects.Length();
nsAutoTArray<PRUint8,100> buf;
if (!buf.SetLength(size))
return NULL;
RGNDATA* data = reinterpret_cast<RGNDATA*>(buf.Elements());
RECT* rects = reinterpret_cast<RECT*>(data->Buffer);
data->rdh.dwSize = sizeof(data->rdh);
data->rdh.iType = RDH_RECTANGLES;
data->rdh.nCount = aRects.Length();
nsIntRect bounds;
for (PRUint32 i = 0; i < aRects.Length(); ++i) {
const nsIntRect& r = aRects[i];
bounds.UnionRect(bounds, r);
::SetRect(&rects[i], r.x, r.y, r.XMost(), r.YMost());
}
::SetRect(&data->rdh.rcBound, bounds.x, bounds.y, bounds.XMost(), bounds.YMost());
return ::ExtCreateRegion(NULL, buf.Length(), data);
}
static const nsTArray<nsIntRect>
ArrayFromRegion(const nsIntRegion& aRegion)
{
nsTArray<nsIntRect> rects;
const nsIntRect* r;
for (nsIntRegionRectIterator iter(aRegion); (r = iter.Next());) {
rects.AppendElement(*r);
}
return rects;
}
nsresult
nsWindow::SetWindowClipRegion(const nsTArray<nsIntRect>& aRects,
bool aIntersectWithExisting)
{
if (!aIntersectWithExisting) {
if (!StoreWindowClipRegion(aRects))
return NS_OK;
} else {
// In this case still early return if nothing changed.
if (mClipRects && mClipRectCount == aRects.Length() &&
memcmp(mClipRects,
aRects.Elements(),
sizeof(nsIntRect)*mClipRectCount) == 0) {
return NS_OK;
}
// get current rects
nsTArray<nsIntRect> currentRects;
GetWindowClipRegion(&currentRects);
// create region from them
nsIntRegion currentRegion = RegionFromArray(currentRects);
// create region from new rects
nsIntRegion newRegion = RegionFromArray(aRects);
// intersect regions
nsIntRegion intersection;
intersection.And(currentRegion, newRegion);
// create int rect array from intersection
nsTArray<nsIntRect> rects = ArrayFromRegion(intersection);
// store
if (!StoreWindowClipRegion(rects))
return NS_OK;
}
HRGN dest = CreateHRGNFromArray(aRects);
if (!dest)
return NS_ERROR_OUT_OF_MEMORY;
if (aIntersectWithExisting) {
HRGN current = ::CreateRectRgn(0, 0, 0, 0);
if (current) {
if (::GetWindowRgn(mWnd, current) != 0 /*ERROR*/) {
::CombineRgn(dest, dest, current, RGN_AND);
}
::DeleteObject(current);
}
}
// If a plugin is not visible, especially if it is in a background tab,
// it should not be able to steal keyboard focus. This code checks whether
// the region that the plugin is being clipped to is NULLREGION. If it is,
// the plugin window gets disabled.
if(mWindowType == eWindowType_plugin) {
if(NULLREGION == ::CombineRgn(dest, dest, dest, RGN_OR)) {
::ShowWindow(mWnd, SW_HIDE);
::EnableWindow(mWnd, FALSE);
} else {
::EnableWindow(mWnd, TRUE);
::ShowWindow(mWnd, SW_SHOW);
}
}
if (!::SetWindowRgn(mWnd, dest, TRUE)) {
::DeleteObject(dest);
return NS_ERROR_FAILURE;
}
return NS_OK;
}
// WM_DESTROY event handler
void nsWindow::OnDestroy()
{
mOnDestroyCalled = true;
// Make sure we don't get destroyed in the process of tearing down.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
// Dispatch the NS_DESTROY event. Must be called before mEventCallback is cleared.
if (!mInDtor)
DispatchStandardEvent(NS_DESTROY);
// Prevent the widget from sending additional events.
mEventCallback = nsnull;
// Free our subclass and clear |this| stored in the window props. We will no longer
// receive events from Windows after this point.
SubclassWindow(FALSE);
// Once mEventCallback is cleared and the subclass is reset, sCurrentWindow can be
// cleared. (It's used in tracking windows for mouse events.)
if (sCurrentWindow == this)
sCurrentWindow = nsnull;
// Disconnects us from our parent, will call our GetParent().
nsBaseWidget::Destroy();
// Release references to children, device context, toolkit, and app shell.
nsBaseWidget::OnDestroy();
// Clear our native parent handle.
// XXX Windows will take care of this in the proper order, and SetParent(nsnull)'s
// remove child on the parent already took place in nsBaseWidget's Destroy call above.
//SetParent(nsnull);
mParent = nsnull;
// We have to destroy the native drag target before we null out our window pointer.
EnableDragDrop(false);
// If we're going away and for some reason we're still the rollup widget, rollup and
// turn off capture.
if ( this == sRollupWidget ) {
if ( sRollupListener )
sRollupListener->Rollup(0);
CaptureRollupEvents(nsnull, false, true);
}
// Restore the IM context.
AssociateDefaultIMC(true);
// Turn off mouse trails if enabled.
MouseTrailer* mtrailer = nsToolkit::gMouseTrailer;
if (mtrailer) {
if (mtrailer->GetMouseTrailerWindow() == mWnd)
mtrailer->DestroyTimer();
if (mtrailer->GetCaptureWindow() == mWnd)
mtrailer->SetCaptureWindow(nsnull);
}
// Free GDI window class objects
if (mBrush) {
VERIFY(::DeleteObject(mBrush));
mBrush = NULL;
}
// Free app icon resources.
HICON icon;
icon = (HICON) ::SendMessageW(mWnd, WM_SETICON, (WPARAM)ICON_BIG, (LPARAM) 0);
if (icon)
::DestroyIcon(icon);
icon = (HICON) ::SendMessageW(mWnd, WM_SETICON, (WPARAM)ICON_SMALL, (LPARAM) 0);
if (icon)
::DestroyIcon(icon);
// Destroy any custom cursor resources.
if (mCursor == -1)
SetCursor(eCursor_standard);
#ifdef MOZ_XUL
// Reset transparency
if (eTransparencyTransparent == mTransparencyMode)
SetupTranslucentWindowMemoryBitmap(eTransparencyOpaque);
#endif
// Finalize panning feedback to possibly restore window displacement
mGesture.PanFeedbackFinalize(mWnd, true);
// Clear the main HWND.
mWnd = NULL;
}
// OnMove
bool nsWindow::OnMove(PRInt32 aX, PRInt32 aY)
{
mBounds.x = aX;
mBounds.y = aY;
nsGUIEvent event(true, NS_MOVE, this);
InitEvent(event);
event.refPoint.x = aX;
event.refPoint.y = aY;
return DispatchWindowEvent(&event);
}
// Send a resize message to the listener
bool nsWindow::OnResize(nsIntRect &aWindowRect)
{
#ifdef CAIRO_HAS_D2D_SURFACE
if (mD2DWindowSurface) {
mD2DWindowSurface = NULL;
Invalidate();
}
#endif
// call the event callback
if (mEventCallback) {
nsSizeEvent event(true, NS_SIZE, this);
InitEvent(event);
event.windowSize = &aWindowRect;
RECT r;
if (::GetWindowRect(mWnd, &r)) {
event.mWinWidth = PRInt32(r.right - r.left);
event.mWinHeight = PRInt32(r.bottom - r.top);
} else {
event.mWinWidth = 0;
event.mWinHeight = 0;
}
#if 0
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("[%X] OnResize: client:(%d x %d x %d x %d) window:(%d x %d)\n", this,
aWindowRect.x, aWindowRect.y, aWindowRect.width, aWindowRect.height,
event.mWinWidth, event.mWinHeight));
#endif
return DispatchWindowEvent(&event);
}
return false;
}
bool nsWindow::OnHotKey(WPARAM wParam, LPARAM lParam)
{
return true;
}
// Determine whether the given HWND is the handle for the Elantech helper
// window. The helper window cannot be distinguished based on its
// window class, so we need to check if it is owned by the helper process,
// ETDCtrl.exe.
static bool IsElantechHelperWindow(HWND aHWND)
{
const PRUnichar* filenameSuffix = L"\\etdctrl.exe";
const int filenameSuffixLength = 12;
DWORD pid;
::GetWindowThreadProcessId(aHWND, &pid);
bool result = false;
HANDLE hProcess = ::OpenProcess(PROCESS_QUERY_INFORMATION, FALSE, pid);
if (hProcess) {
PRUnichar path[256] = {L'\0'};
if (GetProcessImageFileName(hProcess, path, ArrayLength(path))) {
int pathLength = lstrlenW(path);
if (pathLength >= filenameSuffixLength) {
if (lstrcmpiW(path + pathLength - filenameSuffixLength, filenameSuffix) == 0) {
result = true;
}
}
}
::CloseHandle(hProcess);
}
return result;
}
/**
* OnMouseWheel() is called when ProcessMessage() handles WM_MOUSEWHEEL,
* WM_MOUSEHWHEEL and also OnScroll() tries to emulate mouse wheel action for
* WM_VSCROLL or WM_HSCROLL.
* So, aMsg may be WM_MOUSEWHEEL, WM_MOUSEHWHEEL, WM_VSCROLL or WM_HSCROLL.
*/
void
nsWindow::OnMouseWheel(UINT aMsg, WPARAM aWParam, LPARAM aLParam,
LRESULT *aRetValue)
{
*aRetValue = (aMsg != WM_MOUSEHWHEEL) ? TRUE : FALSE;
POINT point;
DWORD dwPoints = ::GetMessagePos();
point.x = GET_X_LPARAM(dwPoints);
point.y = GET_Y_LPARAM(dwPoints);
static bool sMayBeUsingLogitechMouse = false;
if (aMsg == WM_MOUSEHWHEEL) {
// Logitech (Logicool) mouse driver (confirmed with 4.82.11 and MX-1100)
// always sets 0 to the lParam of WM_MOUSEHWHEEL. The driver SENDs one
// message at first time, this time, ::GetMessagePos works fine.
// Then, we will return 0 (0 means we process it) to the message. Then, the
// driver will POST the same messages continuously during the wheel tilted.
// But ::GetMessagePos API always returns (0, 0), even if the actual mouse
// cursor isn't 0,0. Therefore, we cannot trust the result of
// ::GetMessagePos API if the sender is the driver.
if (!sMayBeUsingLogitechMouse && aLParam == 0 && (DWORD)aLParam != dwPoints &&
::InSendMessage()) {
sMayBeUsingLogitechMouse = true;
} else if (sMayBeUsingLogitechMouse && aLParam != 0 && ::InSendMessage()) {
// The user has changed the mouse from Logitech's to another one (e.g.,
// the user has changed to the touchpad of the notebook.
sMayBeUsingLogitechMouse = false;
}
// If the WM_MOUSEHWHEEL comes from Logitech's mouse driver, and the
// ::GetMessagePos isn't correct, probably, we should use ::GetCursorPos
// instead.
if (sMayBeUsingLogitechMouse && aLParam == 0 && dwPoints == 0) {
::GetCursorPos(&point);
}
}
HWND underCursorWnd = ::WindowFromPoint(point);
if (!underCursorWnd) {
return;
}
if (sUseElantechPinchHack && IsElantechHelperWindow(underCursorWnd)) {
// The Elantech driver places a window right underneath the cursor
// when sending a WM_MOUSEWHEEL event to us as part of a pinch-to-zoom
// gesture. We detect that here, and search for our window that would
// be beneath the cursor if that window wasn't there.
underCursorWnd = WinUtils::FindOurWindowAtPoint(point);
if (!underCursorWnd) {
return;
}
}
// Handle most cases first. If the window under mouse cursor is our window
// except plugin window (MozillaWindowClass), we should handle the message
// on the window.
if (WinUtils::IsOurProcessWindow(underCursorWnd)) {
nsWindow* destWindow = WinUtils::GetNSWindowPtr(underCursorWnd);
if (!destWindow) {
NS_WARNING("We're not sure what cause this is.");
HWND wnd = ::GetParent(underCursorWnd);
for (; wnd; wnd = ::GetParent(wnd)) {
destWindow = WinUtils::GetNSWindowPtr(wnd);
if (destWindow) {
break;
}
}
if (!wnd) {
return;
}
}
NS_ASSERTION(destWindow, "destWindow must not be NULL");
// If the found window is our plugin window, it means that the message
// has been handled by the plugin but not consumed. We should handle the
// message on its parent window. However, note that the DOM event may
// cause accessing the plugin. Therefore, we should unlock the plugin
// process by using PostMessage().
if (destWindow->mWindowType == eWindowType_plugin) {
destWindow = destWindow->GetParentWindow(false);
NS_ENSURE_TRUE(destWindow, );
}
UINT internalMessage = WinUtils::GetInternalMessage(aMsg);
::PostMessage(destWindow->mWnd, internalMessage, aWParam, aLParam);
return;
}
// If the window under cursor is not in our process, it means:
// 1. The window may be a plugin window (GeckoPluginWindow or its descendant).
// 2. The window may be another application's window.
HWND pluginWnd = WinUtils::FindOurProcessWindow(underCursorWnd);
if (!pluginWnd) {
// If there is no plugin window in ancestors of the window under cursor,
// the window is for another applications (case 2).
// We don't need to handle this message.
return;
}
// If we're a plugin window (MozillaWindowClass) and cursor in this window,
// the message shouldn't go to plugin's wndproc again. So, we should handle
// it on parent window. However, note that the DOM event may cause accessing
// the plugin. Therefore, we should unlock the plugin process by using
// PostMessage().
if (mWindowType == eWindowType_plugin && pluginWnd == mWnd) {
nsWindow* destWindow = GetParentWindow(false);
NS_ENSURE_TRUE(destWindow, );
UINT internalMessage = WinUtils::GetInternalMessage(aMsg);
::PostMessage(destWindow->mWnd, internalMessage, aWParam, aLParam);
return;
}
// If the window is a part of plugin, we should post the message to it.
::PostMessage(underCursorWnd, aMsg, aWParam, aLParam);
}
/**
* OnScroll() is called when ProcessMessage() handles WM_VSCROLL or WM_HSCROLL.
* aMsg may be WM_VSCROLL or WM_HSCROLL.
*/
bool
nsWindow::OnScroll(UINT aMsg, WPARAM aWParam, LPARAM aLParam)
{
static PRInt8 sMouseWheelEmulation = -1;
if (sMouseWheelEmulation < 0) {
bool emulate =
Preferences::GetBool("mousewheel.emulate_at_wm_scroll", false);
sMouseWheelEmulation = PRInt8(emulate);
}
if (aLParam || sMouseWheelEmulation) {
// Scroll message generated by Thinkpad Trackpoint Driver or similar
// Treat as a mousewheel message and scroll appropriately
LRESULT retVal;
OnMouseWheel(aMsg, aWParam, aLParam, &retVal);
// Always consume the scroll message if we try to emulate mouse wheel
// action.
return true;
}
// Scroll message generated by external application
nsContentCommandEvent command(true, NS_CONTENT_COMMAND_SCROLL, this);
command.mScroll.mIsHorizontal = (aMsg == WM_HSCROLL);
switch (LOWORD(aWParam))
{
case SB_LINEUP: // SB_LINELEFT
command.mScroll.mUnit = nsContentCommandEvent::eCmdScrollUnit_Line;
command.mScroll.mAmount = -1;
break;
case SB_LINEDOWN: // SB_LINERIGHT
command.mScroll.mUnit = nsContentCommandEvent::eCmdScrollUnit_Line;
command.mScroll.mAmount = 1;
break;
case SB_PAGEUP: // SB_PAGELEFT
command.mScroll.mUnit = nsContentCommandEvent::eCmdScrollUnit_Page;
command.mScroll.mAmount = -1;
break;
case SB_PAGEDOWN: // SB_PAGERIGHT
command.mScroll.mUnit = nsContentCommandEvent::eCmdScrollUnit_Page;
command.mScroll.mAmount = 1;
break;
case SB_TOP: // SB_LEFT
command.mScroll.mUnit = nsContentCommandEvent::eCmdScrollUnit_Whole;
command.mScroll.mAmount = -1;
break;
case SB_BOTTOM: // SB_RIGHT
command.mScroll.mUnit = nsContentCommandEvent::eCmdScrollUnit_Whole;
command.mScroll.mAmount = 1;
break;
default:
return false;
}
// XXX If this is a plugin window, we should dispatch the event from
// parent window.
DispatchWindowEvent(&command);
return true;
}
/**
* OnScrollInternal() is called when ProcessMessage() handles MOZ_WM_VSCROLL or
* MOZ_WM_HSCROLL but aMsg may be WM_VSCROLL or WM_HSCROLL.
* These internal messages used only when OnScroll() tries to emulate mouse
* wheel action for the WM_VSCROLL or WM_HSCROLL message.
*/
void
nsWindow::OnScrollInternal(UINT aMsg, WPARAM aWParam, LPARAM aLParam)
{
nsMouseScrollEvent scrollevent(true, NS_MOUSE_SCROLL, this);
scrollevent.scrollFlags = (aMsg == WM_VSCROLL)
? nsMouseScrollEvent::kIsVertical
: nsMouseScrollEvent::kIsHorizontal;
switch (LOWORD(aWParam)) {
case SB_PAGEDOWN:
scrollevent.scrollFlags |= nsMouseScrollEvent::kIsFullPage;
case SB_LINEDOWN:
scrollevent.delta = 1;
break;
case SB_PAGEUP:
scrollevent.scrollFlags |= nsMouseScrollEvent::kIsFullPage;
case SB_LINEUP:
scrollevent.delta = -1;
break;
default:
return;
}
scrollevent.isShift = IS_VK_DOWN(NS_VK_SHIFT);
scrollevent.isControl = IS_VK_DOWN(NS_VK_CONTROL);
scrollevent.isMeta = false;
scrollevent.isAlt = IS_VK_DOWN(NS_VK_ALT);
InitEvent(scrollevent);
if (mEventCallback) {
DispatchWindowEvent(&scrollevent);
}
}
// Can be overriden. Controls auto-erase of background.
bool nsWindow::AutoErase(HDC dc)
{
return false;
}
void
nsWindow::AllowD3D9Callback(nsWindow *aWindow)
{
if (aWindow->mLayerManager) {
aWindow->mLayerManager->Destroy();
aWindow->mLayerManager = NULL;
}
}
void
nsWindow::AllowD3D9WithReinitializeCallback(nsWindow *aWindow)
{
if (aWindow->mLayerManager) {
aWindow->mLayerManager->Destroy();
aWindow->mLayerManager = NULL;
(void) aWindow->GetLayerManager();
}
}
void
nsWindow::StartAllowingD3D9(bool aReinitialize)
{
sAllowD3D9 = true;
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
if (prefs.mDisableAcceleration) {
// The guarantee here is, if there's *any* chance that after we
// throw out our layer managers we'd create at least one new,
// accelerated one, we *will* throw out all the current layer
// managers. We early-return here because currently, if
// |disableAcceleration|, we will always use basic managers and
// it's a waste to recreate them.
//
// NB: the above implies that it's eminently possible for us to
// skip this early return but still recreate basic managers.
// That's OK. It's *not* OK to take this early return when we
// *might* have created an accelerated manager.
return;
}
if (aReinitialize) {
EnumAllWindows(AllowD3D9WithReinitializeCallback);
} else {
EnumAllWindows(AllowD3D9Callback);
}
}
bool
nsWindow::HasBogusPopupsDropShadowOnMultiMonitor() {
if (sHasBogusPopupsDropShadowOnMultiMonitor == TRI_UNKNOWN) {
// Since any change in the preferences requires a restart, this can be
// done just once.
// Check for Direct2D first.
sHasBogusPopupsDropShadowOnMultiMonitor =
gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D ? TRI_TRUE : TRI_FALSE;
if (!sHasBogusPopupsDropShadowOnMultiMonitor) {
// Otherwise check if Direct3D 9 may be used.
LayerManagerPrefs prefs;
GetLayerManagerPrefs(&prefs);
if (!prefs.mDisableAcceleration && !prefs.mPreferOpenGL) {
nsCOMPtr<nsIGfxInfo> gfxInfo = do_GetService("@mozilla.org/gfx/info;1");
if (gfxInfo) {
PRInt32 status;
if (NS_SUCCEEDED(gfxInfo->GetFeatureStatus(nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS, &status))) {
if (status == nsIGfxInfo::FEATURE_NO_INFO || prefs.mForceAcceleration)
{
sHasBogusPopupsDropShadowOnMultiMonitor = TRI_TRUE;
}
}
}
}
}
}
return !!sHasBogusPopupsDropShadowOnMultiMonitor;
}
void
nsWindow::OnSysColorChanged()
{
if (mWindowType == eWindowType_invisible) {
::EnumThreadWindows(GetCurrentThreadId(), nsWindow::BroadcastMsg, WM_SYSCOLORCHANGE);
}
else {
// Note: This is sent for child windows as well as top-level windows.
// The Win32 toolkit normally only sends these events to top-level windows.
// But we cycle through all of the childwindows and send it to them as well
// so all presentations get notified properly.
// See nsWindow::GlobalMsgWindowProc.
DispatchStandardEvent(NS_SYSCOLORCHANGED);
}
}
/**************************************************************
**************************************************************
**
** BLOCK: IME management and accessibility
**
** Handles managing IME input and accessibility.
**
**************************************************************
**************************************************************/
NS_IMETHODIMP nsWindow::ResetInputState()
{
#ifdef DEBUG_KBSTATE
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("ResetInputState\n"));
#endif
#ifdef NS_ENABLE_TSF
nsTextStore::CommitComposition(false);
#endif //NS_ENABLE_TSF
nsIMM32Handler::CommitComposition(this);
return NS_OK;
}
NS_IMETHODIMP_(void)
nsWindow::SetInputContext(const InputContext& aContext,
const InputContextAction& aAction)
{
#ifdef NS_ENABLE_TSF
nsTextStore::SetInputContext(aContext);
#endif //NS_ENABLE_TSF
if (nsIMM32Handler::IsComposing()) {
ResetInputState();
}
mInputContext = aContext;
bool enable = (mInputContext.mIMEState.mEnabled == IMEState::ENABLED ||
mInputContext.mIMEState.mEnabled == IMEState::PLUGIN);
AssociateDefaultIMC(enable);
if (enable &&
mInputContext.mIMEState.mOpen != IMEState::DONT_CHANGE_OPEN_STATE) {
bool open = (mInputContext.mIMEState.mOpen == IMEState::OPEN);
#ifdef NS_ENABLE_TSF
nsTextStore::SetIMEOpenState(open);
#endif //NS_ENABLE_TSF
nsIMEContext IMEContext(mWnd);
if (IMEContext.IsValid()) {
::ImmSetOpenStatus(IMEContext.get(), open);
}
}
}
NS_IMETHODIMP_(InputContext)
nsWindow::GetInputContext()
{
mInputContext.mIMEState.mOpen = IMEState::CLOSED;
switch (mInputContext.mIMEState.mEnabled) {
case IMEState::ENABLED:
case IMEState::PLUGIN: {
nsIMEContext IMEContext(mWnd);
if (IMEContext.IsValid()) {
mInputContext.mIMEState.mOpen =
::ImmGetOpenStatus(IMEContext.get()) ? IMEState::OPEN :
IMEState::CLOSED;
}
#ifdef NS_ENABLE_TSF
if (mInputContext.mIMEState.mOpen == IMEState::CLOSED &&
nsTextStore::GetIMEOpenState()) {
mInputContext.mIMEState.mOpen = IMEState::OPEN;
}
#endif //NS_ENABLE_TSF
}
}
return mInputContext;
}
NS_IMETHODIMP nsWindow::CancelIMEComposition()
{
#ifdef DEBUG_KBSTATE
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("CancelIMEComposition\n"));
#endif
#ifdef NS_ENABLE_TSF
nsTextStore::CommitComposition(true);
#endif //NS_ENABLE_TSF
nsIMM32Handler::CancelComposition(this);
return NS_OK;
}
NS_IMETHODIMP
nsWindow::GetToggledKeyState(PRUint32 aKeyCode, bool* aLEDState)
{
#ifdef DEBUG_KBSTATE
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("GetToggledKeyState\n"));
#endif
NS_ENSURE_ARG_POINTER(aLEDState);
*aLEDState = (::GetKeyState(aKeyCode) & 1) != 0;
return NS_OK;
}
#ifdef NS_ENABLE_TSF
NS_IMETHODIMP
nsWindow::OnIMEFocusChange(bool aFocus)
{
nsresult rv = nsTextStore::OnFocusChange(aFocus, this,
mInputContext.mIMEState.mEnabled);
if (rv == NS_ERROR_NOT_AVAILABLE)
rv = NS_ERROR_NOT_IMPLEMENTED; // TSF is not enabled, maybe.
return rv;
}
NS_IMETHODIMP
nsWindow::OnIMETextChange(PRUint32 aStart,
PRUint32 aOldEnd,
PRUint32 aNewEnd)
{
return nsTextStore::OnTextChange(aStart, aOldEnd, aNewEnd);
}
NS_IMETHODIMP
nsWindow::OnIMESelectionChange(void)
{
return nsTextStore::OnSelectionChange();
}
#endif //NS_ENABLE_TSF
bool nsWindow::AssociateDefaultIMC(bool aAssociate)
{
nsIMEContext IMEContext(mWnd);
if (aAssociate) {
BOOL ret = ::ImmAssociateContextEx(mWnd, NULL, IACE_DEFAULT);
#ifdef DEBUG
// Note that if IME isn't available with current keyboard layout,
// IMM might not be installed on the system such as English Windows.
// On such system, IMM APIs always fail.
NS_ASSERTION(ret || !nsIMM32Handler::IsIMEAvailable(),
"ImmAssociateContextEx failed to restore default IMC");
if (ret) {
nsIMEContext newIMEContext(mWnd);
NS_ASSERTION(!IMEContext.get() || newIMEContext.get() == IMEContext.get(),
"Unknown IMC had been associated");
}
#endif
return ret && !IMEContext.get();
}
if (mOnDestroyCalled) {
// If OnDestroy() has been called, we shouldn't disassociate the default
// IMC at destroying the window.
return false;
}
if (!IMEContext.get()) {
return false; // already disassociated
}
BOOL ret = ::ImmAssociateContextEx(mWnd, NULL, 0);
NS_ASSERTION(ret, "ImmAssociateContextEx failed to disassociate the IMC");
return ret != FALSE;
}
#ifdef ACCESSIBILITY
#ifdef DEBUG_WMGETOBJECT
#define NS_LOG_WMGETOBJECT_WNDACC(aWnd) \
nsAccessible* acc = aWnd ? \
aWnd->DispatchAccessibleEvent(NS_GETACCESSIBLE) : nsnull; \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, (" acc: %p", acc)); \
if (acc) { \
nsAutoString name; \
acc->GetName(name); \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, \
(", accname: %s", NS_ConvertUTF16toUTF8(name).get())); \
nsCOMPtr<nsIAccessibleDocument> doc = do_QueryObject(acc); \
void *hwnd = nsnull; \
doc->GetWindowHandle(&hwnd); \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, (", acc hwnd: %d", hwnd)); \
}
#define NS_LOG_WMGETOBJECT_THISWND \
{ \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, \
("\n*******Get Doc Accessible*******\nOrig Window: ")); \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, \
("\n {\n HWND: %d, parent HWND: %d, wndobj: %p,\n", \
mWnd, ::GetParent(mWnd), this)); \
NS_LOG_WMGETOBJECT_WNDACC(this) \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("\n }\n")); \
}
#define NS_LOG_WMGETOBJECT_WND(aMsg, aHwnd) \
{ \
nsWindow* wnd = WinUtils::GetNSWindowPtr(aHwnd); \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, \
("Get " aMsg ":\n {\n HWND: %d, parent HWND: %d, wndobj: %p,\n", \
aHwnd, ::GetParent(aHwnd), wnd)); \
NS_LOG_WMGETOBJECT_WNDACC(wnd); \
PR_LOG(gWindowsLog, PR_LOG_ALWAYS, ("\n }\n")); \
}
#else
#define NS_LOG_WMGETOBJECT_THISWND
#define NS_LOG_WMGETOBJECT_WND(aMsg, aHwnd)
#endif // DEBUG_WMGETOBJECT
nsAccessible*
nsWindow::GetRootAccessible()
{
// We want the ability to forcibly disable a11y on windows, because
// some non-a11y-related components attempt to bring it up. See bug
// 538530 for details; we have a pref here that allows it to be disabled
// for performance and testing resons.
//
// This pref is checked only once, and the browser needs a restart to
// pick up any changes.
static int accForceDisable = -1;
if (accForceDisable == -1) {
const char* kPrefName = "accessibility.win32.force_disabled";
if (Preferences::GetBool(kPrefName, false)) {
accForceDisable = 1;
} else {
accForceDisable = 0;
}
}
// If the pref was true, return null here, disabling a11y.
if (accForceDisable)
return nsnull;
if (mInDtor || mOnDestroyCalled || mWindowType == eWindowType_invisible) {
return nsnull;
}
NS_LOG_WMGETOBJECT_THISWND
NS_LOG_WMGETOBJECT_WND("This Window", mWnd);
return DispatchAccessibleEvent(NS_GETACCESSIBLE);
}
#endif
/**************************************************************
**************************************************************
**
** BLOCK: Transparency
**
** Window transparency helpers.
**
**************************************************************
**************************************************************/
#ifdef MOZ_XUL
void nsWindow::ResizeTranslucentWindow(PRInt32 aNewWidth, PRInt32 aNewHeight, bool force)
{
if (!force && aNewWidth == mBounds.width && aNewHeight == mBounds.height)
return;
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
nsRefPtr<gfxD2DSurface> newSurface =
new gfxD2DSurface(gfxIntSize(aNewWidth, aNewHeight), gfxASurface::ImageFormatARGB32);
mTransparentSurface = newSurface;
mMemoryDC = nsnull;
} else
#endif
{
nsRefPtr<gfxWindowsSurface> newSurface =
new gfxWindowsSurface(gfxIntSize(aNewWidth, aNewHeight), gfxASurface::ImageFormatARGB32);
mTransparentSurface = newSurface;
mMemoryDC = newSurface->GetDC();
}
}
void nsWindow::SetWindowTranslucencyInner(nsTransparencyMode aMode)
{
if (aMode == mTransparencyMode)
return;
// stop on dialogs and popups!
HWND hWnd = WinUtils::GetTopLevelHWND(mWnd, true);
nsWindow* parent = WinUtils::GetNSWindowPtr(hWnd);
if (!parent)
{
NS_WARNING("Trying to use transparent chrome in an embedded context");
return;
}
if (parent != this) {
NS_WARNING("Setting SetWindowTranslucencyInner on a parent this is not us!");
}
if (aMode == eTransparencyTransparent) {
// If we're switching to the use of a transparent window, hide the chrome
// on our parent.
HideWindowChrome(true);
} else if (mHideChrome && mTransparencyMode == eTransparencyTransparent) {
// if we're switching out of transparent, re-enable our parent's chrome.
HideWindowChrome(false);
}
LONG_PTR style = ::GetWindowLongPtrW(hWnd, GWL_STYLE),
exStyle = ::GetWindowLongPtr(hWnd, GWL_EXSTYLE);
if (parent->mIsVisible)
style |= WS_VISIBLE;
if (parent->mSizeMode == nsSizeMode_Maximized)
style |= WS_MAXIMIZE;
else if (parent->mSizeMode == nsSizeMode_Minimized)
style |= WS_MINIMIZE;
if (aMode == eTransparencyTransparent)
exStyle |= WS_EX_LAYERED;
else
exStyle &= ~WS_EX_LAYERED;
VERIFY_WINDOW_STYLE(style);
::SetWindowLongPtrW(hWnd, GWL_STYLE, style);
::SetWindowLongPtrW(hWnd, GWL_EXSTYLE, exStyle);
if (HasGlass())
memset(&mGlassMargins, 0, sizeof mGlassMargins);
mTransparencyMode = aMode;
SetupTranslucentWindowMemoryBitmap(aMode);
UpdateGlass();
}
void nsWindow::SetupTranslucentWindowMemoryBitmap(nsTransparencyMode aMode)
{
if (eTransparencyTransparent == aMode) {
ResizeTranslucentWindow(mBounds.width, mBounds.height, true);
} else {
mTransparentSurface = nsnull;
mMemoryDC = NULL;
}
}
nsresult nsWindow::UpdateTranslucentWindow()
{
if (mBounds.IsEmpty())
return NS_OK;
::GdiFlush();
BLENDFUNCTION bf = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
SIZE winSize = { mBounds.width, mBounds.height };
POINT srcPos = { 0, 0 };
HWND hWnd = WinUtils::GetTopLevelHWND(mWnd, true);
RECT winRect;
::GetWindowRect(hWnd, &winRect);
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
mMemoryDC = static_cast<gfxD2DSurface*>(mTransparentSurface.get())->
GetDC(true);
}
#endif
// perform the alpha blend
bool updateSuccesful =
::UpdateLayeredWindow(hWnd, NULL, (POINT*)&winRect, &winSize, mMemoryDC, &srcPos, 0, &bf, ULW_ALPHA);
#ifdef CAIRO_HAS_D2D_SURFACE
if (gfxWindowsPlatform::GetPlatform()->GetRenderMode() ==
gfxWindowsPlatform::RENDER_DIRECT2D) {
nsIntRect r(0, 0, 0, 0);
static_cast<gfxD2DSurface*>(mTransparentSurface.get())->ReleaseDC(&r);
}
#endif
if (!updateSuccesful) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
#endif //MOZ_XUL
/**************************************************************
**************************************************************
**
** BLOCK: Popup rollup hooks
**
** Deals with CaptureRollup on popup windows.
**
**************************************************************
**************************************************************/
// Schedules a timer for a window, so we can rollup after processing the hook event
void nsWindow::ScheduleHookTimer(HWND aWnd, UINT aMsgId)
{
// In some cases multiple hooks may be scheduled
// so ignore any other requests once one timer is scheduled
if (sHookTimerId == 0) {
// Remember the window handle and the message ID to be used later
sRollupMsgId = aMsgId;
sRollupMsgWnd = aWnd;
// Schedule native timer for doing the rollup after
// this event is done being processed
sHookTimerId = ::SetTimer(NULL, 0, 0, (TIMERPROC)HookTimerForPopups);
NS_ASSERTION(sHookTimerId, "Timer couldn't be created.");
}
}
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
int gLastMsgCode = 0;
extern MSGFEventMsgInfo gMSGFEvents[];
#endif
// Process Menu messages, rollup when popup is clicked.
LRESULT CALLBACK nsWindow::MozSpecialMsgFilter(int code, WPARAM wParam, LPARAM lParam)
{
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (sProcessHook) {
MSG* pMsg = (MSG*)lParam;
int inx = 0;
while (gMSGFEvents[inx].mId != code && gMSGFEvents[inx].mStr != NULL) {
inx++;
}
if (code != gLastMsgCode) {
if (gMSGFEvents[inx].mId == code) {
#ifdef DEBUG
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("MozSpecialMessageProc - code: 0x%X - %s hw: %p\n",
code, gMSGFEvents[inx].mStr, pMsg->hwnd));
#endif
} else {
#ifdef DEBUG
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("MozSpecialMessageProc - code: 0x%X - %d hw: %p\n",
code, gMSGFEvents[inx].mId, pMsg->hwnd));
#endif
}
gLastMsgCode = code;
}
PrintEvent(pMsg->message, FALSE, FALSE);
}
#endif // #ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (sProcessHook && code == MSGF_MENU) {
MSG* pMsg = (MSG*)lParam;
ScheduleHookTimer( pMsg->hwnd, pMsg->message);
}
return ::CallNextHookEx(sMsgFilterHook, code, wParam, lParam);
}
// Process all mouse messages. Roll up when a click is in a native window
// that doesn't have an nsIWidget.
LRESULT CALLBACK nsWindow::MozSpecialMouseProc(int code, WPARAM wParam, LPARAM lParam)
{
if (sProcessHook) {
switch (WinUtils::GetNativeMessage(wParam)) {
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
{
MOUSEHOOKSTRUCT* ms = (MOUSEHOOKSTRUCT*)lParam;
nsIWidget* mozWin = WinUtils::GetNSWindowPtr(ms->hwnd);
if (mozWin) {
// If this window is windowed plugin window, the mouse events are not
// sent to us.
if (static_cast<nsWindow*>(mozWin)->mWindowType == eWindowType_plugin)
ScheduleHookTimer(ms->hwnd, (UINT)wParam);
} else {
ScheduleHookTimer(ms->hwnd, (UINT)wParam);
}
break;
}
}
}
return ::CallNextHookEx(sCallMouseHook, code, wParam, lParam);
}
// Process all messages. Roll up when the window is moving, or
// is resizing or when maximized or mininized.
LRESULT CALLBACK nsWindow::MozSpecialWndProc(int code, WPARAM wParam, LPARAM lParam)
{
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (sProcessHook) {
CWPSTRUCT* cwpt = (CWPSTRUCT*)lParam;
PrintEvent(cwpt->message, FALSE, FALSE);
}
#endif
if (sProcessHook) {
CWPSTRUCT* cwpt = (CWPSTRUCT*)lParam;
if (cwpt->message == WM_MOVING ||
cwpt->message == WM_SIZING ||
cwpt->message == WM_GETMINMAXINFO) {
ScheduleHookTimer(cwpt->hwnd, (UINT)cwpt->message);
}
}
return ::CallNextHookEx(sCallProcHook, code, wParam, lParam);
}
// Register the special "hooks" for dropdown processing.
void nsWindow::RegisterSpecialDropdownHooks()
{
NS_ASSERTION(!sMsgFilterHook, "sMsgFilterHook must be NULL!");
NS_ASSERTION(!sCallProcHook, "sCallProcHook must be NULL!");
DISPLAY_NMM_PRT("***************** Installing Msg Hooks ***************\n");
// Install msg hook for moving the window and resizing
if (!sMsgFilterHook) {
DISPLAY_NMM_PRT("***** Hooking sMsgFilterHook!\n");
sMsgFilterHook = SetWindowsHookEx(WH_MSGFILTER, MozSpecialMsgFilter, NULL, GetCurrentThreadId());
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (!sMsgFilterHook) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("***** SetWindowsHookEx is NOT installed for WH_MSGFILTER!\n"));
}
#endif
}
// Install msg hook for menus
if (!sCallProcHook) {
DISPLAY_NMM_PRT("***** Hooking sCallProcHook!\n");
sCallProcHook = SetWindowsHookEx(WH_CALLWNDPROC, MozSpecialWndProc, NULL, GetCurrentThreadId());
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (!sCallProcHook) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("***** SetWindowsHookEx is NOT installed for WH_CALLWNDPROC!\n"));
}
#endif
}
// Install msg hook for the mouse
if (!sCallMouseHook) {
DISPLAY_NMM_PRT("***** Hooking sCallMouseHook!\n");
sCallMouseHook = SetWindowsHookEx(WH_MOUSE, MozSpecialMouseProc, NULL, GetCurrentThreadId());
#ifdef POPUP_ROLLUP_DEBUG_OUTPUT
if (!sCallMouseHook) {
PR_LOG(gWindowsLog, PR_LOG_ALWAYS,
("***** SetWindowsHookEx is NOT installed for WH_MOUSE!\n"));
}
#endif
}
}
// Unhook special message hooks for dropdowns.
void nsWindow::UnregisterSpecialDropdownHooks()
{
DISPLAY_NMM_PRT("***************** De-installing Msg Hooks ***************\n");
if (sCallProcHook) {
DISPLAY_NMM_PRT("***** Unhooking sCallProcHook!\n");
if (!::UnhookWindowsHookEx(sCallProcHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sCallProcHook!\n");
}
sCallProcHook = NULL;
}
if (sMsgFilterHook) {
DISPLAY_NMM_PRT("***** Unhooking sMsgFilterHook!\n");
if (!::UnhookWindowsHookEx(sMsgFilterHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sMsgFilterHook!\n");
}
sMsgFilterHook = NULL;
}
if (sCallMouseHook) {
DISPLAY_NMM_PRT("***** Unhooking sCallMouseHook!\n");
if (!::UnhookWindowsHookEx(sCallMouseHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sCallMouseHook!\n");
}
sCallMouseHook = NULL;
}
}
// This timer is designed to only fire one time at most each time a "hook" function
// is used to rollup the dropdown. In some cases, the timer may be scheduled from the
// hook, but that hook event or a subsequent event may roll up the dropdown before
// this timer function is executed.
//
// For example, if an MFC control takes focus, the combobox will lose focus and rollup
// before this function fires.
VOID CALLBACK nsWindow::HookTimerForPopups(HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
if (sHookTimerId != 0) {
// if the window is NULL then we need to use the ID to kill the timer
BOOL status = ::KillTimer(NULL, sHookTimerId);
NS_ASSERTION(status, "Hook Timer was not killed.");
sHookTimerId = 0;
}
if (sRollupMsgId != 0) {
// Note: DealWithPopups does the check to make sure that
// sRollupListener and sRollupWidget are not NULL
LRESULT popupHandlingResult;
nsAutoRollup autoRollup;
DealWithPopups(sRollupMsgWnd, sRollupMsgId, 0, 0, &popupHandlingResult);
sRollupMsgId = 0;
sRollupMsgWnd = NULL;
}
}
BOOL CALLBACK nsWindow::ClearResourcesCallback(HWND aWnd, LPARAM aMsg)
{
nsWindow *window = WinUtils::GetNSWindowPtr(aWnd);
if (window) {
window->ClearCachedResources();
}
return TRUE;
}
void
nsWindow::ClearCachedResources()
{
#ifdef CAIRO_HAS_D2D_SURFACE
mD2DWindowSurface = nsnull;
#endif
if (mLayerManager &&
mLayerManager->GetBackendType() == LayerManager::LAYERS_BASIC) {
static_cast<BasicLayerManager*>(mLayerManager.get())->
ClearCachedResources();
}
::EnumChildWindows(mWnd, nsWindow::ClearResourcesCallback, 0);
}
static bool IsDifferentThreadWindow(HWND aWnd)
{
return ::GetCurrentThreadId() != ::GetWindowThreadProcessId(aWnd, NULL);
}
bool
nsWindow::EventIsInsideWindow(UINT Msg, nsWindow* aWindow)
{
RECT r;
if (Msg == WM_ACTIVATEAPP)
// don't care about activation/deactivation
return false;
::GetWindowRect(aWindow->mWnd, &r);
DWORD pos = ::GetMessagePos();
POINT mp;
mp.x = GET_X_LPARAM(pos);
mp.y = GET_Y_LPARAM(pos);
// was the event inside this window?
return (bool) PtInRect(&r, mp);
}
// Handle events that may cause a popup (combobox, XPMenu, etc) to need to rollup.
BOOL
nsWindow::DealWithPopups(HWND inWnd, UINT inMsg, WPARAM inWParam, LPARAM inLParam, LRESULT* outResult)
{
if (sRollupListener && sRollupWidget && ::IsWindowVisible(inWnd)) {
inMsg = WinUtils::GetNativeMessage(inMsg);
if (inMsg == WM_LBUTTONDOWN || inMsg == WM_RBUTTONDOWN || inMsg == WM_MBUTTONDOWN ||
inMsg == WM_MOUSEWHEEL || inMsg == WM_MOUSEHWHEEL || inMsg == WM_ACTIVATE ||
(inMsg == WM_KILLFOCUS && IsDifferentThreadWindow((HWND)inWParam)) ||
inMsg == WM_NCRBUTTONDOWN ||
inMsg == WM_MOVING ||
inMsg == WM_SIZING ||
inMsg == WM_NCLBUTTONDOWN ||
inMsg == WM_NCMBUTTONDOWN ||
inMsg == WM_MOUSEACTIVATE ||
inMsg == WM_ACTIVATEAPP ||
inMsg == WM_MENUSELECT)
{
// Rollup if the event is outside the popup.
bool rollup = !nsWindow::EventIsInsideWindow(inMsg, (nsWindow*)sRollupWidget);
if (rollup && (inMsg == WM_MOUSEWHEEL || inMsg == WM_MOUSEHWHEEL))
{
rollup = sRollupListener->ShouldRollupOnMouseWheelEvent();
*outResult = true;
}
// If we're dealing with menus, we probably have submenus and we don't
// want to rollup if the click is in a parent menu of the current submenu.
PRUint32 popupsToRollup = PR_UINT32_MAX;
if (rollup) {
if ( sRollupListener ) {
nsAutoTArray<nsIWidget*, 5> widgetChain;
PRUint32 sameTypeCount = sRollupListener->GetSubmenuWidgetChain(&widgetChain);
for ( PRUint32 i = 0; i < widgetChain.Length(); ++i ) {
nsIWidget* widget = widgetChain[i];
if ( nsWindow::EventIsInsideWindow(inMsg, (nsWindow*)widget) ) {
// don't roll up if the mouse event occurred within a menu of the
// same type. If the mouse event occurred in a menu higher than
// that, roll up, but pass the number of popups to Rollup so
// that only those of the same type close up.
if (i < sameTypeCount) {
rollup = false;
}
else {
popupsToRollup = sameTypeCount;
}
break;
}
} // foreach parent menu widget
} // if rollup listener knows about menus
}
if (inMsg == WM_MOUSEACTIVATE && popupsToRollup == PR_UINT32_MAX) {
// Prevent the click inside the popup from causing a change in window
// activation. Since the popup is shown non-activated, we need to eat
// any requests to activate the window while it is displayed. Windows
// will automatically activate the popup on the mousedown otherwise.
if (!rollup) {
*outResult = MA_NOACTIVATE;
return TRUE;
}
else
{
UINT uMsg = HIWORD(inLParam);
if (uMsg == WM_MOUSEMOVE)
{
// WM_MOUSEACTIVATE cause by moving the mouse - X-mouse (eg. TweakUI)
// must be enabled in Windows.
rollup = sRollupListener->ShouldRollupOnMouseActivate();
if (!rollup)
{
*outResult = MA_NOACTIVATE;
return true;
}
}
}
}
// if we've still determined that we should still rollup everything, do it.
else if (rollup) {
// sRollupConsumeEvent may be modified by
// nsIRollupListener::Rollup.
bool consumeRollupEvent = sRollupConsumeEvent;
// only need to deal with the last rollup for left mouse down events.
NS_ASSERTION(!mLastRollup, "mLastRollup is null");
mLastRollup = sRollupListener->Rollup(popupsToRollup, inMsg == WM_LBUTTONDOWN);
NS_IF_ADDREF(mLastRollup);
// Tell hook to stop processing messages
sProcessHook = false;
sRollupMsgId = 0;
sRollupMsgWnd = NULL;
// return TRUE tells Windows that the event is consumed,
// false allows the event to be dispatched
//
// So if we are NOT supposed to be consuming events, let it go through
if (consumeRollupEvent && inMsg != WM_RBUTTONDOWN) {
*outResult = MA_ACTIVATE;
// However, don't activate panels
if (inMsg == WM_MOUSEACTIVATE) {
nsWindow* activateWindow = WinUtils::GetNSWindowPtr(inWnd);
if (activateWindow) {
nsWindowType wintype;
activateWindow->GetWindowType(wintype);
if (wintype == eWindowType_popup && activateWindow->PopupType() == ePopupTypePanel) {
*outResult = MA_NOACTIVATE;
}
}
}
return TRUE;
}
// if we are only rolling up some popups, don't activate and don't let
// the event go through. This prevents clicks menus higher in the
// chain from opening when a context menu is open
if (popupsToRollup != PR_UINT32_MAX && inMsg == WM_MOUSEACTIVATE) {
*outResult = MA_NOACTIVATEANDEAT;
return TRUE;
}
}
} // if event that might trigger a popup to rollup
} // if rollup listeners registered
return FALSE;
}
/**************************************************************
**************************************************************
**
** BLOCK: Misc. utility methods and functions.
**
** General use.
**
**************************************************************
**************************************************************/
// nsModifierKeyState used in various character processing.
nsModifierKeyState::nsModifierKeyState()
{
mIsShiftDown = IS_VK_DOWN(NS_VK_SHIFT);
mIsControlDown = IS_VK_DOWN(NS_VK_CONTROL);
mIsAltDown = IS_VK_DOWN(NS_VK_ALT);
}
// Note that the result of GetTopLevelWindow method can be different from the
// result of WinUtils::GetTopLevelHWND(). The result can be non-floating
// window. Because our top level window may be contained in another window
// which is not managed by us.
nsWindow* nsWindow::GetTopLevelWindow(bool aStopOnDialogOrPopup)
{
nsWindow* curWindow = this;
while (true) {
if (aStopOnDialogOrPopup) {
switch (curWindow->mWindowType) {
case eWindowType_dialog:
case eWindowType_popup:
return curWindow;
default:
break;
}
}
// Retrieve the top level parent or owner window
nsWindow* parentWindow = curWindow->GetParentWindow(true);
if (!parentWindow)
return curWindow;
curWindow = parentWindow;
}
}
static BOOL CALLBACK gEnumWindowsProc(HWND hwnd, LPARAM lParam)
{
DWORD pid;
::GetWindowThreadProcessId(hwnd, &pid);
if (pid == GetCurrentProcessId() && ::IsWindowVisible(hwnd))
{
gWindowsVisible = true;
return FALSE;
}
return TRUE;
}
bool nsWindow::CanTakeFocus()
{
gWindowsVisible = false;
EnumWindows(gEnumWindowsProc, 0);
if (!gWindowsVisible) {
return true;
} else {
HWND fgWnd = ::GetForegroundWindow();
if (!fgWnd) {
return true;
}
DWORD pid;
GetWindowThreadProcessId(fgWnd, &pid);
if (pid == GetCurrentProcessId()) {
return true;
}
}
return false;
}
void nsWindow::GetMainWindowClass(nsAString& aClass)
{
NS_PRECONDITION(aClass.IsEmpty(), "aClass should be empty string");
nsresult rv = Preferences::GetString("ui.window_class_override", &aClass);
if (NS_FAILED(rv) || aClass.IsEmpty()) {
aClass.AssignASCII(sDefaultMainWindowClass);
}
}
/**
* Gets the Boolean value of a pref used to enable or disable an input
* workaround (like the Trackpoint hack). The pref can take values 0 (for
* disabled), 1 (for enabled) or -1 (to automatically detect whether to
* enable the workaround).
*
* @param aPrefName The name of the pref.
* @param aValueIfAutomatic Whether the given input workaround should be
* enabled by default.
*/
bool nsWindow::GetInputWorkaroundPref(const char* aPrefName,
bool aValueIfAutomatic)
{
if (!aPrefName) {
return aValueIfAutomatic;
}
PRInt32 lHackValue = 0;
if (NS_SUCCEEDED(Preferences::GetInt(aPrefName, &lHackValue))) {
switch (lHackValue) {
case 0: // disabled
return false;
case 1: // enabled
return true;
default: // -1: autodetect
break;
}
}
return aValueIfAutomatic;
}
bool nsWindow::UseTrackPointHack()
{
return GetInputWorkaroundPref("ui.trackpoint_hack.enabled",
sDefaultTrackPointHack);
}
static bool
HasRegistryKey(HKEY aRoot, PRUnichar* aName)
{
HKEY key;
LONG result = ::RegOpenKeyExW(aRoot, aName, 0, KEY_READ | KEY_WOW64_32KEY, &key);
if (result != ERROR_SUCCESS) {
result = ::RegOpenKeyExW(aRoot, aName, 0, KEY_READ | KEY_WOW64_64KEY, &key);
if (result != ERROR_SUCCESS)
return false;
}
::RegCloseKey(key);
return true;
}
static bool
IsObsoleteSynapticsDriver()
{
PRUnichar buf[40];
bool foundKey = WinUtils::GetRegistryKey(HKEY_LOCAL_MACHINE,
L"Software\\Synaptics\\SynTP\\Install",
L"DriverVersion",
buf,
sizeof buf);
if (!foundKey)
return false;
int majorVersion = wcstol(buf, NULL, 10);
int minorVersion = 0;
PRUnichar* p = wcschr(buf, L'.');
if (p) {
minorVersion = wcstol(p + 1, NULL, 10);
}
return majorVersion < 15 || majorVersion == 15 && minorVersion == 0;
}
static PRInt32
GetElantechDriverMajorVersion()
{
PRUnichar buf[40];
// The driver version is found in one of these two registry keys.
bool foundKey = WinUtils::GetRegistryKey(HKEY_CURRENT_USER,
L"Software\\Elantech\\MainOption",
L"DriverVersion",
buf,
sizeof buf);
if (!foundKey)
foundKey = WinUtils::GetRegistryKey(HKEY_CURRENT_USER,
L"Software\\Elantech",
L"DriverVersion",
buf,
sizeof buf);
if (!foundKey)
return false;
// Assume that the major version number can be found just after a space
// or at the start of the string.
for (PRUnichar* p = buf; *p; p++) {
if (*p >= L'0' && *p <= L'9' && (p == buf || *(p - 1) == L' ')) {
return wcstol(p, NULL, 10);
}
}
return 0;
}
void nsWindow::InitInputWorkaroundPrefDefaults()
{
PRUint32 elantechDriverVersion = GetElantechDriverMajorVersion();
if (HasRegistryKey(HKEY_CURRENT_USER, L"Software\\Lenovo\\TrackPoint")) {
sDefaultTrackPointHack = true;
} else if (HasRegistryKey(HKEY_CURRENT_USER, L"Software\\Lenovo\\UltraNav")) {
sDefaultTrackPointHack = true;
} else if (HasRegistryKey(HKEY_CURRENT_USER, L"Software\\Alps\\Apoint\\TrackPoint")) {
sDefaultTrackPointHack = true;
} else if ((HasRegistryKey(HKEY_CURRENT_USER, L"Software\\Synaptics\\SynTPEnh\\UltraNavUSB") ||
HasRegistryKey(HKEY_CURRENT_USER, L"Software\\Synaptics\\SynTPEnh\\UltraNavPS2")) &&
IsObsoleteSynapticsDriver()) {
sDefaultTrackPointHack = true;
}
bool useElantechGestureHacks =
GetInputWorkaroundPref("ui.elantech_gesture_hacks.enabled",
elantechDriverVersion != 0);
sUseElantechSwipeHack = useElantechGestureHacks && elantechDriverVersion <= 7;
sUseElantechPinchHack = useElantechGestureHacks && elantechDriverVersion <= 8;
}
LPARAM nsWindow::lParamToScreen(LPARAM lParam)
{
POINT pt;
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
::ClientToScreen(mWnd, &pt);
return MAKELPARAM(pt.x, pt.y);
}
LPARAM nsWindow::lParamToClient(LPARAM lParam)
{
POINT pt;
pt.x = GET_X_LPARAM(lParam);
pt.y = GET_Y_LPARAM(lParam);
::ScreenToClient(mWnd, &pt);
return MAKELPARAM(pt.x, pt.y);
}
void nsWindow::PickerOpen()
{
mPickerDisplayCount++;
}
void nsWindow::PickerClosed()
{
NS_ASSERTION(mPickerDisplayCount > 0, "mPickerDisplayCount out of sync!");
if (!mPickerDisplayCount)
return;
mPickerDisplayCount--;
if (!mPickerDisplayCount && mDestroyCalled) {
Destroy();
}
}
/**************************************************************
**************************************************************
**
** BLOCK: ChildWindow impl.
**
** Child window overrides.
**
**************************************************************
**************************************************************/
// return the style for a child nsWindow
DWORD ChildWindow::WindowStyle()
{
DWORD style = WS_CLIPCHILDREN | nsWindow::WindowStyle();
if (!(style & WS_POPUP))
style |= WS_CHILD; // WS_POPUP and WS_CHILD are mutually exclusive.
VERIFY_WINDOW_STYLE(style);
return style;
}
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