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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: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* 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 "gfx2DGlue.h"
#include "gfxPlatform.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/MiscEvents.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/ipc/MessageChannel.h"
#include <algorithm>
#include <limits>
#include "nsWindow.h"
#include <shellapi.h>
#include <windows.h>
#include <wtsapi32.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 "prenv.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 "nsFontMetrics.h"
#include "nsIFontEnumerator.h"
#include "nsFont.h"
#include "nsRect.h"
#include "nsThreadUtils.h"
#include "nsNativeCharsetUtils.h"
#include "nsGkAtoms.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 "nsLayoutUtils.h"
#include "nsView.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"
#include "WidgetUtils.h"
#include "nsIWidgetListener.h"
#include "mozilla/dom/Touch.h"
#include "mozilla/gfx/2D.h"
#include "nsToolkitCompsCID.h"
#include "nsIAppStartup.h"
#include "mozilla/WindowsVersion.h"
#include "nsThemeConstants.h"
#ifdef MOZ_ENABLE_D3D9_LAYER
#include "LayerManagerD3D9.h"
#endif
#ifdef MOZ_ENABLE_D3D10_LAYER
#include "LayerManagerD3D10.h"
#endif
#include "nsIGfxInfo.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)
#ifdef DEBUG
#include "mozilla/a11y/Logging.h"
#endif
#include "oleidl.h"
#include <winuser.h>
#include "nsAccessibilityService.h"
#include "mozilla/a11y/DocAccessible.h"
#include "mozilla/a11y/Platform.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"
#include "nsWindowDefs.h"
#include "nsCrashOnException.h"
#include "nsIXULRuntime.h"
#include "nsIContent.h"
#include "mozilla/HangMonitor.h"
#include "WinIMEHandler.h"
#include "npapi.h"
#if !defined(SM_CONVERTIBLESLATEMODE)
#define SM_CONVERTIBLESLATEMODE 0x2003
#endif
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::gfx;
using namespace mozilla::layers;
using namespace mozilla::widget;
/**************************************************************
**************************************************************
**
** BLOCK: Variables
**
** nsWindow Class static initializations and global variables.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow statics
*
**************************************************************/
bool nsWindow::sDropShadowEnabled = true;
uint32_t nsWindow::sInstanceCount = 0;
bool nsWindow::sSwitchKeyboardLayout = false;
BOOL nsWindow::sIsOleInitialized = FALSE;
HCURSOR nsWindow::sHCursor = nullptr;
imgIContainer* nsWindow::sCursorImgContainer = nullptr;
nsWindow* nsWindow::sCurrentWindow = nullptr;
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 = nullptr;
HHOOK nsWindow::sCallProcHook = nullptr;
HHOOK nsWindow::sCallMouseHook = nullptr;
bool nsWindow::sProcessHook = false;
UINT nsWindow::sRollupMsgId = 0;
HWND nsWindow::sRollupMsgWnd = nullptr;
UINT nsWindow::sHookTimerId = 0;
// 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 general window class (used when the pref is the empty string).
const char* nsWindow::sDefaultMainWindowClass = kClassNameGeneral;
// 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 wchar_t* kOOPPPluginFocusEventId = L"OOPP Plugin Focus Widget Event";
uint32_t nsWindow::sOOPPPluginFocusEvent =
RegisterWindowMessageW(kOOPPPluginFocusEventId);
DWORD nsWindow::sFirstEventTime = 0;
TimeStamp nsWindow::sFirstEventTimeStamp = TimeStamp();
/**************************************************************
*
* SECTION: globals variables
*
**************************************************************/
static const char *sScreenManagerContractID = "@mozilla.org/gfx/screenmanager;1";
#ifdef PR_LOGGING
extern PRLogModuleInfo* gWindowsLog;
#endif
// 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 int32_t 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 int32_t kResizableBorderMinSize = 3;
// Cached pointer events enabler value, True if pointer events are enabled.
static bool gIsPointerEventsEnabled = false;
// 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
// On window open (as well as after), Windows has an unfortunate habit of
// sending rather a lot of WM_NCHITTEST messages. Because we have to do point
// to DOM target conversions for these, we cache responses for a given
// coordinate this many milliseconds:
#define HITTEST_CACHE_LIFETIME_MS 50
// Times attached to messages wrap when they overflow
static const DWORD kEventTimeRange = std::numeric_limits<DWORD>::max();
static const DWORD kEventTimeHalfRange = kEventTimeRange / 2;
/**************************************************************
**************************************************************
**
** BLOCK: nsIWidget impl.
**
** nsIWidget interface implementation, broken down into
** sections.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: nsWindow construction and destruction
*
**************************************************************/
nsWindow::nsWindow() : nsWindowBase()
{
mIconSmall = nullptr;
mIconBig = nullptr;
mWnd = nullptr;
mPaintDC = nullptr;
mCompositeDC = nullptr;
mPrevWndProc = nullptr;
mNativeDragTarget = nullptr;
mInDtor = false;
mIsVisible = false;
mIsTopWidgetWindow = false;
mUnicodeWidget = true;
mDisplayPanFeedback = false;
mTouchWindow = false;
mCustomNonClient = false;
mHideChrome = false;
mFullscreenMode = false;
mMousePresent = false;
mDestroyCalled = false;
mHasTaskbarIconBeenCreated = false;
mMouseTransparent = false;
mPickerDisplayCount = 0;
mWindowType = eWindowType_child;
mBorderStyle = eBorderStyle_default;
mOldSizeMode = nsSizeMode_Normal;
mLastSizeMode = nsSizeMode_Normal;
mLastSize.width = 0;
mLastSize.height = 0;
mOldStyle = 0;
mOldExStyle = 0;
mPainting = 0;
mLastKeyboardLayout = 0;
mBlurSuppressLevel = 0;
mLastPaintEndTime = TimeStamp::Now();
mCachedHitTestPoint.x = 0;
mCachedHitTestPoint.y = 0;
mCachedHitTestTime = TimeStamp::Now();
mCachedHitTestResult = 0;
#ifdef MOZ_XUL
mTransparentSurface = nullptr;
mMemoryDC = nullptr;
mTransparencyMode = eTransparencyOpaque;
memset(&mGlassMargins, 0, sizeof mGlassMargins);
#endif
DWORD background = ::GetSysColor(COLOR_BTNFACE);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(background));
mTaskbarPreview = nullptr;
// Global initialization
if (!sInstanceCount) {
// Global app registration id for Win7 and up. See
// WinTaskbar.cpp for details.
mozilla::widget::WinTaskbar::RegisterAppUserModelID();
KeyboardLayout::GetInstance()->OnLayoutChange(::GetKeyboardLayout(0));
IMEHandler::Initialize();
if (SUCCEEDED(::OleInitialize(nullptr))) {
sIsOleInitialized = TRUE;
}
NS_ASSERTION(sIsOleInitialized, "***** OLE is not initialized!\n");
MouseScrollHandler::Initialize();
// Init titlebar button info for custom frames.
nsUXThemeData::InitTitlebarInfo();
// Init theme data
nsUXThemeData::UpdateNativeThemeInfo();
RedirectedKeyDownMessageManager::Forget();
Preferences::AddBoolVarCache(&gIsPointerEventsEnabled,
"dom.w3c_pointer_events.enabled",
gIsPointerEventsEnabled);
} // !sInstanceCount
mIdleService = nullptr;
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 (nullptr != mWnd)
Destroy();
// Free app icon resources. This must happen after `OnDestroy` (see bug 708033).
if (mIconSmall)
::DestroyIcon(mIconSmall);
if (mIconBig)
::DestroyIcon(mIconBig);
sInstanceCount--;
// Global shutdown
if (sInstanceCount == 0) {
IMEHandler::Terminate();
NS_IF_RELEASE(sCursorImgContainer);
if (sIsOleInitialized) {
::OleFlushClipboard();
::OleUninitialize();
sIsOleInitialized = FALSE;
}
}
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.
int32_t nsWindow::GetHeight(int32_t aProposedHeight)
{
return aProposedHeight;
}
// Create the proper widget
nsresult
nsWindow::Create(nsIWidget *aParent,
nsNativeWidget aNativeParent,
const nsIntRect &aRect,
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 ?
nullptr : aParent;
mIsTopWidgetWindow = (nullptr == baseParent);
mBounds = aRect;
// Ensure that the toolkit is created.
nsToolkit::GetToolkit();
BaseCreate(baseParent, aRect, aContext, aInitData);
HWND parent;
if (aParent) { // has a nsIWidget parent
parent = aParent ? (HWND)aParent->GetNativeData(NS_NATIVE_WINDOW) : nullptr;
mParent = aParent;
} else { // has a nsNative parent
parent = (HWND)aNativeParent;
mParent = aNativeParent ?
WinUtils::GetNSWindowPtr((HWND)aNativeParent) : nullptr;
}
mIsRTL = aInitData->mRTL;
DWORD style = WindowStyle();
DWORD extendedStyle = WindowExStyle();
if (mWindowType == eWindowType_popup) {
if (!aParent) {
parent = nullptr;
}
if (IsVistaOrLater() && !IsWin8OrLater() &&
HasBogusPopupsDropShadowOnMultiMonitor()) {
extendedStyle |= WS_EX_COMPOSITED;
}
if (aInitData->mMouseTransparent) {
// This flag makes the window transparent to mouse events
mMouseTransparent = true;
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,
nullptr,
nsToolkit::mDllInstance,
nullptr);
if (!mWnd) {
NS_WARNING("nsWindow CreateWindowEx failed.");
return NS_ERROR_FAILURE;
}
if (mIsRTL && WinUtils::dwmSetWindowAttributePtr) {
DWORD dwAttribute = TRUE;
WinUtils::dwmSetWindowAttributePtr(mWnd, DWMWA_NONCLIENT_RTL_LAYOUT, &dwAttribute, sizeof dwAttribute);
}
if (mWindowType != eWindowType_plugin &&
mWindowType != eWindowType_invisible &&
MouseScrollHandler::Device::IsFakeScrollableWindowNeeded()) {
// 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, nullptr, nsToolkit::mDllInstance, nullptr);
HWND scrollableWnd = ::CreateWindowW
(className.get(), L"FAKETRACKPOINTSCROLLABLE",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_TABSTOP | 0x30,
0, 0, 0, 0, scrollContainerWnd, nullptr, nsToolkit::mDllInstance,
nullptr);
// 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);
}
SubclassWindow(TRUE);
// Starting with Windows XP, a process always runs within a terminal services
// session. In order to play nicely with RDP, fast user switching, and the
// lock screen, we should be handling WM_WTSSESSION_CHANGE. We must register
// our HWND in order to receive this message.
DebugOnly<BOOL> wtsRegistered = ::WTSRegisterSessionNotification(mWnd,
NOTIFY_FOR_THIS_SESSION);
NS_ASSERTION(wtsRegistered, "WTSRegisterSessionNotification failed!\n");
IMEHandler::InitInputContext(this, mInputContext);
// 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",
IsVistaOrLater() ? 1 : 0);
sSwitchKeyboardLayout =
Preferences::GetBool("intl.keyboard.per_window_layout", false);
}
// Query for command button metric data for rendering the titlebar. We
// only do this once on the first window.
if (mWindowType == eWindowType_toplevel &&
(!nsUXThemeData::sTitlebarInfoPopulatedThemed ||
!nsUXThemeData::sTitlebarInfoPopulatedAero)) {
nsUXThemeData::UpdateTitlebarInfo(mWnd);
}
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 nullptr it here.
*/
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
/* 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) {
MSGResult msgResult;
mWindowHook.Notify(mWnd, WM_DESTROY, 0, 0, msgResult);
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(nullptr), aIconID) : nullptr;
wc.hCursor = nullptr;
wc.hbrBackground = mBrush;
wc.lpszMenuName = nullptr;
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 (bState) {
if (!mWnd || !IsWindow(mWnd)) {
NS_ERROR("Invalid window handle");
}
if (mUnicodeWidget) {
mPrevWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtrW(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(nsWindow::WindowProc)));
} else {
mPrevWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtrA(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(nsWindow::WindowProc)));
}
NS_ASSERTION(mPrevWndProc, "Null standard window procedure");
// connect the this pointer to the nsWindow handle
WinUtils::SetNSWindowBasePtr(mWnd, this);
} else {
if (IsWindow(mWnd)) {
if (mUnicodeWidget) {
SetWindowLongPtrW(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mPrevWndProc));
} else {
SetWindowLongPtrA(mWnd,
GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mPrevWndProc));
}
}
WinUtils::SetNSWindowBasePtr(mWnd, nullptr);
mPrevWndProc = nullptr;
}
}
/**************************************************************
*
* 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, nullptr));
}
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);
}
double nsWindow::GetDefaultScaleInternal()
{
return WinUtils::LogToPhysFactor();
}
nsWindow*
nsWindow::GetParentWindow(bool aIncludeOwner)
{
return static_cast<nsWindow*>(GetParentWindowBase(aIncludeOwner));
}
nsWindowBase*
nsWindow::GetParentWindowBase(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 nullptr;
}
// 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 nullptr;
// 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 = nullptr;
if (mWnd) {
HWND parent = nullptr;
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 = nullptr;
}
}
}
}
return static_cast<nsWindowBase*>(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;
}
}
// WS_EX_COMPOSITED conflicts with the WS_EX_LAYERED style and causes
// some popup menus to become invisible.
LONG_PTR exStyle = ::GetWindowLongPtrW(mWnd, GWL_EXSTYLE);
if (exStyle & WS_EX_LAYERED) {
::SetWindowLongPtrW(mWnd, GWL_EXSTYLE, exStyle & ~WS_EX_COMPOSITED);
}
}
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 {
// Clear contents to avoid ghosting of old content if we display
// this window again.
if (wasVisible && mTransparencyMode == eTransparencyTransparent) {
ClearTranslucentWindow();
}
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 && !mInDtor && !mOnDestroyCalled) {
::UpdateWindow(mWnd);
}
}
#endif
return NS_OK;
}
/**************************************************************
*
* SECTION: nsIWidget::IsVisible
*
* Returns the visibility state.
*
**************************************************************/
// Return true if the whether the component is visible, false otherwise
bool nsWindow::IsVisible() const
{
return mIsVisible;
}
/**************************************************************
*
* 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 (IsVistaOrLater() && !HasGlass() &&
(mWindowType == eWindowType_popup && !IsPopupWithTitleBar() &&
(mPopupType == ePopupTypeTooltip || mPopupType == ePopupTypePanel))) {
SetWindowRgn(mWnd, nullptr, 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 (IsVistaOrLater() && !HasGlass() &&
(mWindowType == eWindowType_popup && !IsPopupWithTitleBar() &&
(mPopupType == ePopupTypeTooltip || mPopupType == ePopupTypePanel))) {
HRGN hRgn = nullptr;
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() {
if (Preferences::GetInt("dom.w3c_touch_events.enabled", 0) ||
gIsPointerEventsEnabled) {
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.
*
**************************************************************/
void
nsWindow::SetSizeConstraints(const SizeConstraints& aConstraints)
{
SizeConstraints c = aConstraints;
if (mWindowType != eWindowType_popup) {
c.mMinSize.width = std::max(int32_t(::GetSystemMetrics(SM_CXMINTRACK)), c.mMinSize.width);
c.mMinSize.height = std::max(int32_t(::GetSystemMetrics(SM_CYMINTRACK)), c.mMinSize.height);
}
nsBaseWidget::SetSizeConstraints(c);
}
// Move this component
NS_METHOD nsWindow::Move(double aX, double aY)
{
if (mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog) {
SetSizeMode(nsSizeMode_Normal);
}
// for top-level windows only, convert coordinates from global display pixels
// (the "parent" coordinate space) to the window's device pixel space
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels() ? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
int32_t x = NSToIntRound(aX * scale.scale);
int32_t y = NSToIntRound(aY * scale.scale);
// 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 == x) && (mBounds.y == y))
{
// Nothing to do, since it is already positioned correctly.
return NS_OK;
}
mBounds.x = x;
mBounds.y = y;
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 (x < 0 || x >= workArea.right || y < 0 || y >= 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() == LayersBackend::LAYERS_D3D9) &&
mClipRects &&
(mClipRectCount != 1 || !mClipRects[0].IsEqualInterior(nsIntRect(0, 0, mBounds.width, mBounds.height)))) {
flags |= SWP_NOCOPYBITS;
}
VERIFY(::SetWindowPos(mWnd, nullptr, x, y, 0, 0, flags));
SetThemeRegion();
}
NotifyRollupGeometryChange();
return NS_OK;
}
// Resize this component
NS_METHOD nsWindow::Resize(double aWidth, double aHeight, bool aRepaint)
{
// for top-level windows only, convert coordinates from global display pixels
// (the "parent" coordinate space) to the window's device pixel space
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels() ? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
int32_t width = NSToIntRound(aWidth * scale.scale);
int32_t height = NSToIntRound(aHeight * scale.scale);
NS_ASSERTION((width >= 0) , "Negative width passed to nsWindow::Resize");
NS_ASSERTION((height >= 0), "Negative height passed to nsWindow::Resize");
ConstrainSize(&width, &height);
// Avoid unnecessary resizing calls
if (mBounds.width == width && mBounds.height == height) {
if (aRepaint) {
Invalidate();
}
return NS_OK;
}
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(width, height);
#endif
// Set cached value for lightweight and printing
mBounds.width = width;
mBounds.height = height;
if (mWnd) {
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOMOVE;
if (!aRepaint) {
flags |= SWP_NOREDRAW;
}
ClearThemeRegion();
VERIFY(::SetWindowPos(mWnd, nullptr, 0, 0,
width, GetHeight(height), flags));
SetThemeRegion();
}
if (aRepaint)
Invalidate();
NotifyRollupGeometryChange();
return NS_OK;
}
// Resize this component
NS_METHOD nsWindow::Resize(double aX, double aY, double aWidth, double aHeight, bool aRepaint)
{
// for top-level windows only, convert coordinates from global display pixels
// (the "parent" coordinate space) to the window's device pixel space
CSSToLayoutDeviceScale scale = BoundsUseDisplayPixels() ? GetDefaultScale()
: CSSToLayoutDeviceScale(1.0);
int32_t x = NSToIntRound(aX * scale.scale);
int32_t y = NSToIntRound(aY * scale.scale);
int32_t width = NSToIntRound(aWidth * scale.scale);
int32_t height = NSToIntRound(aHeight * scale.scale);
NS_ASSERTION((width >= 0), "Negative width passed to nsWindow::Resize");
NS_ASSERTION((height >= 0), "Negative height passed to nsWindow::Resize");
ConstrainSize(&width, &height);
// Avoid unnecessary resizing calls
if (mBounds.x == x && mBounds.y == y &&
mBounds.width == width && mBounds.height == height) {
if (aRepaint) {
Invalidate();
}
return NS_OK;
}
#ifdef MOZ_XUL
if (eTransparencyTransparent == mTransparencyMode)
ResizeTranslucentWindow(width, height);
#endif
// Set cached value for lightweight and printing
mBounds.x = x;
mBounds.y = y;
mBounds.width = width;
mBounds.height = height;
if (mWnd) {
UINT flags = SWP_NOZORDER | SWP_NOACTIVATE;
if (!aRepaint) {
flags |= SWP_NOREDRAW;
}
ClearThemeRegion();
VERIFY(::SetWindowPos(mWnd, nullptr, x, y,
width, GetHeight(height), flags));
SetThemeRegion();
}
if (aRepaint)
Invalidate();
NotifyRollupGeometryChange();
return NS_OK;
}
NS_IMETHODIMP
nsWindow::BeginResizeDrag(WidgetGUIEvent* aEvent,
int32_t aHorizontal,
int32_t 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;
}
if (aEvent->AsMouseEvent()->button != WidgetMouseEvent::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(int32_t 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
mLastSizeMode = mSizeMode;
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 activate here to ensure that the right child window is focused
if (mode == SW_MAXIMIZE || mode == SW_SHOW)
DispatchFocusToTopLevelWindow(true);
}
return rv;
}
// Constrain a potential move to fit onscreen
// Position (aX, aY) is specified in Windows screen (logical) pixels
NS_METHOD nsWindow::ConstrainPosition(bool aAllowSlop,
int32_t *aX, int32_t *aY)
{
if (!mIsTopWidgetWindow) // only a problem for top-level windows
return NS_OK;
double dpiScale = GetDefaultScale().scale;
// we need to use the window size in logical screen pixels
int32_t logWidth = std::max<int32_t>(NSToIntRound(mBounds.width / dpiScale), 1);
int32_t logHeight = std::max<int32_t>(NSToIntRound(mBounds.height / dpiScale), 1);
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;
int32_t left, top, width, height;
screenmgr->ScreenForRect(*aX, *aY, logWidth, logHeight,
getter_AddRefs(screen));
if (screen) {
if (mSizeMode != nsSizeMode_Fullscreen) {
// For normalized windows, use the desktop work area.
screen->GetAvailRectDisplayPix(&left, &top, &width, &height);
} else {
// For full screen windows, use the desktop.
screen->GetRectDisplayPix(&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 - logWidth + kWindowPositionSlop)
*aX = screenRect.left - logWidth + kWindowPositionSlop;
else if (*aX >= screenRect.right - kWindowPositionSlop)
*aX = screenRect.right - kWindowPositionSlop;
if (*aY < screenRect.top - logHeight + kWindowPositionSlop)
*aY = screenRect.top - logHeight + kWindowPositionSlop;
else if (*aY >= screenRect.bottom - kWindowPositionSlop)
*aY = screenRect.bottom - kWindowPositionSlop;
} else {
if (*aX < screenRect.left)
*aX = screenRect.left;
else if (*aX >= screenRect.right - logWidth)
*aX = screenRect.right - logWidth;
if (*aY < screenRect.top)
*aY = screenRect.top;
else if (*aY >= screenRect.bottom - logHeight)
*aY = screenRect.bottom - logHeight;
}
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
bool nsWindow::IsEnabled() const
{
return !mWnd ||
(::IsWindowEnabled(mWnd) &&
::IsWindowEnabled(::GetAncestor(mWnd, GA_ROOT)));
}
/**************************************************************
*
* 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,
* GetRestoredBounds, 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;
}
NS_METHOD nsWindow::GetRestoredBounds(nsIntRect &aRect)
{
if (SizeMode() == nsSizeMode_Normal) {
return GetScreenBounds(aRect);
}
if (!mWnd) {
return NS_ERROR_FAILURE;
}
WINDOWPLACEMENT pl = { sizeof(WINDOWPLACEMENT) };
VERIFY(::GetWindowPlacement(mWnd, &pl));
const RECT& r = pl.rcNormalPosition;
HMONITOR monitor = ::MonitorFromWindow(mWnd, MONITOR_DEFAULTTONULL);
if (!monitor) {
return NS_ERROR_FAILURE;
}
MONITORINFO mi = { sizeof(MONITORINFO) };
VERIFY(::GetMonitorInfo(monitor, &mi));
aRect.SetRect(r.left, r.top, r.right - r.left, r.bottom - r.top);
aRect.MoveBy(mi.rcWork.left - mi.rcMonitor.left,
mi.rcWork.top - mi.rcMonitor.top);
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) {
// top, right, bottom, left for nsIntMargin
nsIntMargin margins(0, -1, -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_CXFRAME);
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(WinUtils::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 wchar_t kManageWindowInfoProperty[] = L"ManageWindowInfoProperty";
typedef BOOL (WINAPI *GetWindowInfoPtr)(HWND hwnd, PWINDOWINFO pwi);
static GetWindowInfoPtr sGetWindowInfoPtrStub = nullptr;
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.
*
* The offsets calculated here are based on the value of `mNonClientMargins`
* which is specified in the "chromemargins" attribute of the window. For
* each margin, the value specified has the following meaning:
* -1 - leave the default frame in place
* 0 - remove the frame
* >0 - frame size equals min(0, (default frame size - margin value))
*
* This function calculates and populates `mNonClientOffset`.
* In our processing of `WM_NCCALCSIZE`, the frame size will be calculated
* as (default frame size - offset). For example, if the left frame should
* be 1 pixel narrower than the default frame size, `mNonClientOffset.left`
* will equal 1.
*
* For maximized, fullscreen, and minimized windows, the values stored in
* `mNonClientMargins` are ignored, and special processing takes place.
*
* For non-glass windows, we only allow frames to be their default size
* or removed entirely.
*/
bool
nsWindow::UpdateNonClientMargins(int32_t aSizeMode, bool aReflowWindow)
{
if (!mCustomNonClient)
return false;
if (aSizeMode == -1) {
aSizeMode = mSizeMode;
}
bool hasCaption = (mBorderStyle
& (eBorderStyle_all
| eBorderStyle_title
| eBorderStyle_menu
| eBorderStyle_default));
// mCaptionHeight is the default size of the NC area at
// the top of the window. If the window has a caption,
// the size is calculated as the sum of:
// SM_CYFRAME - The thickness of the sizing border
// around a resizable window
// SM_CXPADDEDBORDER - The amount of border padding
// for captioned windows
// SM_CYCAPTION - The height of the caption area
//
// If the window does not have a caption, mCaptionHeight will be equal to
// `GetSystemMetrics(SM_CYFRAME)`
mCaptionHeight = GetSystemMetrics(SM_CYFRAME)
+ (hasCaption ? GetSystemMetrics(SM_CYCAPTION)
+ GetSystemMetrics(SM_CXPADDEDBORDER)
: 0);
// mHorResizeMargin is the size of the default NC areas on the
// left and right sides of our window. It is calculated as
// the sum of:
// SM_CXFRAME - The thickness of the sizing border
// SM_CXPADDEDBORDER - The amount of border padding
// for captioned windows
//
// If the window does not have a caption, mHorResizeMargin will be equal to
// `GetSystemMetrics(SM_CXFRAME)`
mHorResizeMargin = GetSystemMetrics(SM_CXFRAME)
+ (hasCaption ? GetSystemMetrics(SM_CXPADDEDBORDER) : 0);
// mVertResizeMargin is the size of the default NC area at the
// bottom of the window. It is calculated as the sum of:
// SM_CYFRAME - The thickness of the sizing border
// SM_CXPADDEDBORDER - The amount of border padding
// for captioned windows.
//
// If the window does not have a caption, mVertResizeMargin will be equal to
// `GetSystemMetrics(SM_CYFRAME)`
mVertResizeMargin = GetSystemMetrics(SM_CYFRAME)
+ (hasCaption ? GetSystemMetrics(SM_CXPADDEDBORDER) : 0);
if (aSizeMode == nsSizeMode_Minimized) {
// Use default frame size for minimized windows
mNonClientOffset.top = 0;
mNonClientOffset.left = 0;
mNonClientOffset.right = 0;
mNonClientOffset.bottom = 0;
} else if (aSizeMode == nsSizeMode_Fullscreen) {
// Remove the default frame from the top of our fullscreen window. This
// makes the whole caption part of our client area, allowing us to draw
// in the whole caption area. Additionally remove the default frame from
// the left, right, and bottom.
mNonClientOffset.top = mCaptionHeight;
mNonClientOffset.bottom = mVertResizeMargin;
mNonClientOffset.left = mHorResizeMargin;
mNonClientOffset.right = mHorResizeMargin;
} else if (aSizeMode == nsSizeMode_Maximized) {
// Remove the default frame from the top of our maximized window. This
// makes the whole caption part of our client area, allowing us to draw
// in the whole caption area. Use default frame size on left, right, and
// bottom. The reason this works is that, for maximized windows,
// Windows positions them so that their frames fall off the screen.
// This gives the illusion of windows having no frames when they are
// maximized. If we try to mess with the frame sizes by setting these
// offsets to positive values, our client area will fall off the screen.
mNonClientOffset.top = mCaptionHeight;
mNonClientOffset.bottom = 0;
mNonClientOffset.left = 0;
mNonClientOffset.right = 0;
APPBARDATA appBarData;
appBarData.cbSize = sizeof(appBarData);
UINT taskbarState = SHAppBarMessage(ABM_GETSTATE, &appBarData);
if (ABS_AUTOHIDE & taskbarState) {
UINT edge = -1;
appBarData.hWnd = FindWindow(L"Shell_TrayWnd", nullptr);
if (appBarData.hWnd) {
HMONITOR taskbarMonitor = ::MonitorFromWindow(appBarData.hWnd,
MONITOR_DEFAULTTOPRIMARY);
HMONITOR windowMonitor = ::MonitorFromWindow(mWnd,
MONITOR_DEFAULTTONEAREST);
if (taskbarMonitor == windowMonitor) {
SHAppBarMessage(ABM_GETTASKBARPOS, &appBarData);
edge = appBarData.uEdge;
}
}
if (ABE_LEFT == edge) {
mNonClientOffset.left -= 1;
} else if (ABE_RIGHT == edge) {
mNonClientOffset.right -= 1;
} else if (ABE_BOTTOM == edge || ABE_TOP == edge) {
mNonClientOffset.bottom -= 1;
}
}
} else {
bool glass = nsUXThemeData::CheckForCompositor();
// We're dealing with a "normal" window (not maximized, minimized, or
// fullscreen), so process `mNonClientMargins` and set `mNonClientOffset`
// accordingly.
//
// Setting `mNonClientOffset` to 0 has the effect of leaving the default
// frame intact. Setting it to a value greater than 0 reduces the frame
// size by that amount.
if (mNonClientMargins.top > 0 && glass) {
mNonClientOffset.top = std::min(mCaptionHeight, mNonClientMargins.top);
} else if (mNonClientMargins.top == 0) {
mNonClientOffset.top = mCaptionHeight;
} else {
mNonClientOffset.top = 0;
}
if (mNonClientMargins.bottom > 0 && glass) {
mNonClientOffset.bottom = std::min(mVertResizeMargin, mNonClientMargins.bottom);
} else if (mNonClientMargins.bottom == 0) {
mNonClientOffset.bottom = mVertResizeMargin;
} else {
mNonClientOffset.bottom = 0;
}
if (mNonClientMargins.left > 0 && glass) {
mNonClientOffset.left = std::min(mHorResizeMargin, mNonClientMargins.left);
} else if (mNonClientMargins.left == 0) {
mNonClientOffset.left = mHorResizeMargin;
} else {
mNonClientOffset.left = 0;
}
if (mNonClientMargins.right > 0 && glass) {
mNonClientOffset.right = std::min(mHorResizeMargin, mNonClientMargins.right);
} else if (mNonClientMargins.right == 0) {
mNonClientOffset.right = mHorResizeMargin;
} else {
mNonClientOffset.right = 0;
}
}
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;
// Force a reflow of content based on the new client
// dimensions.
ResetLayout();
int windowStatus =
reinterpret_cast<LONG_PTR>(GetPropW(mWnd, kManageWindowInfoProperty));
if (windowStatus) {
::SendMessageW(mWnd, WM_NCACTIVATE, 1 != windowStatus, 0);
}
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 NS_OK;
}
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(nullptr, 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(nullptr, 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, nullptr, winRgn, RDW_FRAME | RDW_INVALIDATE);
DeleteObject(winRgn);
}
HRGN
nsWindow::ExcludeNonClientFromPaintRegion(HRGN aRegion)
{
RECT rect;
HRGN rgn = nullptr;
if (aRegion == (HRGN)1) { // undocumented value indicating a full refresh
GetWindowRect(mWnd, &rect);
rgn = CreateRectRgnIndirect(&rect);
} else {
rgn = aRegion;
}
GetClientRect(mWnd, &rect);
MapWindowPoints(mWnd, nullptr, (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.
*
**************************************************************/
void nsWindow::SetBackgroundColor(const nscolor &aColor)
{
if (mBrush)
::DeleteObject(mBrush);
mBrush = ::CreateSolidBrush(NSRGB_2_COLOREF(aColor));
if (mWnd != nullptr) {
::SetClassLongPtrW(mWnd, GCLP_HBRBACKGROUND, (LONG_PTR)mBrush);
}
}
/**************************************************************
*
* 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 = nullptr;
switch (aCursor) {
case eCursor_select:
newCursor = ::LoadCursor(nullptr, IDC_IBEAM);
break;
case eCursor_wait:
newCursor = ::LoadCursor(nullptr, IDC_WAIT);
break;
case eCursor_hyperlink:
{
newCursor = ::LoadCursor(nullptr, IDC_HAND);
break;
}
case eCursor_standard:
case eCursor_context_menu: // XXX See bug 258960.
newCursor = ::LoadCursor(nullptr, IDC_ARROW);
break;
case eCursor_n_resize:
case eCursor_s_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENS);
break;
case eCursor_w_resize:
case eCursor_e_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZEWE);
break;
case eCursor_nw_resize:
case eCursor_se_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENWSE);
break;
case eCursor_ne_resize:
case eCursor_sw_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENESW);
break;
case eCursor_crosshair:
newCursor = ::LoadCursor(nullptr, IDC_CROSS);
break;
case eCursor_move:
newCursor = ::LoadCursor(nullptr, IDC_SIZEALL);
break;
case eCursor_help:
newCursor = ::LoadCursor(nullptr, 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(nullptr, IDC_APPSTARTING);
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(nullptr, 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(nullptr, IDC_SIZEALL);
break;
case eCursor_nesw_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENESW);
break;
case eCursor_nwse_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENWSE);
break;
case eCursor_ns_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZENS);
break;
case eCursor_ew_resize:
newCursor = ::LoadCursor(nullptr, IDC_SIZEWE);
break;
case eCursor_none:
newCursor = ::LoadCursor(nsToolkit::mDllInstance, MAKEINTRESOURCE(IDC_NONE));
break;
default:
NS_ERROR("Invalid cursor type");
break;
}
if (nullptr != newCursor) {
mCursor = aCursor;
HCURSOR oldCursor = ::SetCursor(newCursor);
if (sHCursor == oldCursor) {
NS_IF_RELEASE(sCursorImgContainer);
if (sHCursor != nullptr)
::DestroyIcon(sHCursor);
sHCursor = nullptr;
}
}
return NS_OK;
}
// Setting the actual cursor
NS_IMETHODIMP nsWindow::SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY)
{
if (sCursorImgContainer == aCursor && sHCursor) {
::SetCursor(sHCursor);
return NS_OK;
}
int32_t width;
int32_t 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 != nullptr)
::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 (uint32_t 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()) {
if (child->WindowType() == 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 = std::max<uint32_t>(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()) {
WinUtils::dwmExtendFrameIntoClientAreaPtr(mWnd, &margins);
WinUtils::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,
nullptr,
nsAutoCString("noname"),
(int32_t) 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, nullptr, nullptr, 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,
nsAutoCString("noname"),
(int32_t) 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 nullptr 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);
}
if (mWidgetListener)
mWidgetListener->SizeModeChanged(mSizeMode);
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(uint32_t 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,
nullptr,
nsToolkit::mDllInstance,
nullptr);
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
case NS_NATIVE_TSF_THREAD_MGR:
case NS_NATIVE_TSF_CATEGORY_MGR:
case NS_NATIVE_TSF_DISPLAY_ATTR_MGR:
return IMEHandler::GetNativeData(aDataType);
default:
break;
}
return nullptr;
}
// Free some native data according to aDataType
void nsWindow::FreeNativeData(void * data, uint32_t 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<nsIFile> 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(nullptr,
(LPCWSTR)iconPath.get(),
IMAGE_ICON,
::GetSystemMetrics(SM_CXICON),
::GetSystemMetrics(SM_CYICON),
LR_LOADFROMFILE );
HICON smallIcon = (HICON)::LoadImageW(nullptr,
(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);
mIconBig = bigIcon;
}
#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);
mIconSmall = smallIcon;
}
#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 (mWindowType == eWindowType_popup && !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 (nullptr == mNativeDragTarget) {
mNativeDragTarget = new nsNativeDragTarget(this);
if (nullptr != mNativeDragTarget) {
mNativeDragTarget->AddRef();
if (S_OK == ::CoLockObjectExternal((LPUNKNOWN)mNativeDragTarget,TRUE,FALSE)) {
if (S_OK == ::RegisterDragDrop(mWnd, (LPDROPTARGET)mNativeDragTarget)) {
rv = NS_OK;
}
}
}
}
} else {
if (nullptr != mWnd && nullptr != 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(nullptr);
::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)
{
if (aDoCapture) {
gRollupListener = aListener;
if (!sMsgFilterHook && !sCallProcHook && !sCallMouseHook) {
RegisterSpecialDropdownHooks();
}
sProcessHook = true;
} else {
gRollupListener = nullptr;
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(int32_t 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(PLayerTransactionChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence,
bool* aAllowRetaining)
{
if (aAllowRetaining) {
*aAllowRetaining = true;
}
#ifdef MOZ_ENABLE_D3D10_LAYER
if (mLayerManager) {
if (mLayerManager->GetBackendType() == LayersBackend::LAYERS_D3D10)
{
LayerManagerD3D10 *layerManagerD3D10 =
static_cast<LayerManagerD3D10*>(mLayerManager.get());
if (layerManagerD3D10->device() !=
gfxWindowsPlatform::GetPlatform()->GetD3D10Device())
{
MOZ_ASSERT(!mLayerManager->IsInTransaction());
mLayerManager->Destroy();
mLayerManager = nullptr;
}
}
}
#endif
RECT windowRect;
::GetClientRect(mWnd, &windowRect);
// Try OMTC first.
if (!mLayerManager && ShouldUseOffMainThreadCompositing()) {
// e10s uses the parameter to pass in the shadow manager from the TabChild
// so we don't expect to see it there since this doesn't support e10s.
NS_ASSERTION(aShadowManager == nullptr, "Async Compositor not supported with e10s");
CreateCompositor();
}
if (!mLayerManager ||
(!sAllowD3D9 && aPersistence == LAYER_MANAGER_PERSISTENT &&
mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC &&
!ShouldUseOffMainThreadCompositing())) {
// 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)
mUseLayersAcceleration = false;
else if (prefs.mAccelerateByDefault)
mUseLayersAcceleration = true;
if (mUseLayersAcceleration) {
if (aPersistence == LAYER_MANAGER_PERSISTENT && !sAllowD3D9) {
MOZ_ASSERT(!mLayerManager || !mLayerManager->IsInTransaction());
// 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<LayerManagerD3D10> layerManager =
new LayerManagerD3D10(this);
if (layerManager->Initialize(prefs.mForceAcceleration)) {
mLayerManager = layerManager;
}
}
#endif
#ifdef MOZ_ENABLE_D3D9_LAYER
if (!prefs.mPreferOpenGL && !mLayerManager && sAllowD3D9) {
nsRefPtr<LayerManagerD3D9> layerManager =
new LayerManagerD3D9(this);
if (layerManager->Initialize(prefs.mForceAcceleration)) {
mLayerManager = layerManager;
}
}
#endif
}
// 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::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(double aOriginalDeltaX,
double aOriginalDeltaY,
double& aOverriddenDeltaX,
double& aOverriddenDeltaY)
{
// The default vertical and horizontal scrolling speed is 3, this is defined
// on the document of SystemParametersInfo in MSDN.
const uint32_t kSystemDefaultScrollingSpeed = 3;
double absOriginDeltaX = Abs(aOriginalDeltaX);
double absOriginDeltaY = Abs(aOriginalDeltaY);
// Compute the simple overridden speed.
double absComputedOverriddenDeltaX, absComputedOverriddenDeltaY;
nsresult rv =
nsBaseWidget::OverrideSystemMouseScrollSpeed(absOriginDeltaX,
absOriginDeltaY,
absComputedOverriddenDeltaX,
absComputedOverriddenDeltaY);
NS_ENSURE_SUCCESS(rv, rv);
aOverriddenDeltaX = aOriginalDeltaX;
aOverriddenDeltaY = aOriginalDeltaY;
if (absComputedOverriddenDeltaX == absOriginDeltaX &&
absComputedOverriddenDeltaY == absOriginDeltaY) {
// 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 (IsVistaOrLater()) {
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.
double absDeltaLimitX, absDeltaLimitY;
rv =
nsBaseWidget::OverrideSystemMouseScrollSpeed(kSystemDefaultScrollingSpeed,
kSystemDefaultScrollingSpeed,
absDeltaLimitX,
absDeltaLimitY);
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 (absDeltaLimitX <= absOriginDeltaX || absDeltaLimitY <= absOriginDeltaY) {
return NS_OK;
}
aOverriddenDeltaX = std::min(absComputedOverriddenDeltaX, absDeltaLimitX);
aOverriddenDeltaY = std::min(absComputedOverriddenDeltaY, absDeltaLimitY);
if (aOriginalDeltaX < 0) {
aOverriddenDeltaX *= -1;
}
if (aOriginalDeltaY < 0) {
aOverriddenDeltaY *= -1;
}
return NS_OK;
}
mozilla::TemporaryRef<mozilla::gfx::DrawTarget>
nsWindow::StartRemoteDrawing()
{
MOZ_ASSERT(!mCompositeDC);
NS_ASSERTION(IsRenderMode(gfxWindowsPlatform::RENDER_DIRECT2D) ||
IsRenderMode(gfxWindowsPlatform::RENDER_GDI),
"Unexpected render mode for remote drawing");
HDC dc = (HDC)GetNativeData(NS_NATIVE_GRAPHIC);
nsRefPtr<gfxASurface> surf;
if (mTransparencyMode == eTransparencyTransparent) {
if (!mTransparentSurface) {
SetupTranslucentWindowMemoryBitmap(mTransparencyMode);
}
if (mTransparentSurface) {
surf = mTransparentSurface;
}
}
if (!surf) {
if (!dc) {
return nullptr;
}
uint32_t flags = (mTransparencyMode == eTransparencyOpaque) ? 0 :
gfxWindowsSurface::FLAG_IS_TRANSPARENT;
surf = new gfxWindowsSurface(dc, flags);
}
mozilla::gfx::IntSize size(surf->GetSize().width, surf->GetSize().height);
if (size.width <= 0 || size.height <= 0) {
if (dc) {
FreeNativeData(dc, NS_NATIVE_GRAPHIC);
}
return nullptr;
}
MOZ_ASSERT(!mCompositeDC);
mCompositeDC = dc;
return mozilla::gfx::Factory::CreateDrawTargetForCairoSurface(surf->CairoSurface(), size);
}
void
nsWindow::EndRemoteDrawing()
{
if (mTransparencyMode == eTransparencyTransparent) {
MOZ_ASSERT(IsRenderMode(gfxWindowsPlatform::RENDER_DIRECT2D)
|| mTransparentSurface);
UpdateTranslucentWindow();
}
if (mCompositeDC) {
FreeNativeData(mCompositeDC, NS_NATIVE_GRAPHIC);
}
mCompositeDC = nullptr;
}
void
nsWindow::UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries)
{
nsIntRegion clearRegion;
for (size_t i = 0; i < aThemeGeometries.Length(); i++) {
if ((aThemeGeometries[i].mWidgetType == NS_THEME_WINDOW_BUTTON_BOX ||
aThemeGeometries[i].mWidgetType == NS_THEME_WINDOW_BUTTON_BOX_MAXIMIZED) &&
nsUXThemeData::CheckForCompositor())
{
nsIntRect bounds = aThemeGeometries[i].mRect;
clearRegion = nsIntRect(bounds.X(), bounds.Y(), bounds.Width(), bounds.Height() - 2.0);
clearRegion.Or(clearRegion, nsIntRect(bounds.X() + 1.0, bounds.YMost() - 2.0, bounds.Width() - 1.0, 1.0));
clearRegion.Or(clearRegion, nsIntRect(bounds.X() + 2.0, bounds.YMost() - 1.0, bounds.Width() - 3.0, 1.0));
}
}
nsRefPtr<LayerManager> layerManager = GetLayerManager();
if (layerManager) {
layerManager->SetRegionToClear(clearRegion);
}
}
uint32_t
nsWindow::GetMaxTouchPoints() const
{
if (IsWin7OrLater()) {
return GetSystemMetrics(SM_MAXIMUMTOUCHES);
}
return 0;
}
/**************************************************************
**************************************************************
**
** BLOCK: Moz Events
**
** Moz GUI event management.
**
**************************************************************
**************************************************************/
/**************************************************************
*
* SECTION: Mozilla event initialization
*
* Helpers for initializing moz events.
*
**************************************************************/
// Event intialization
void nsWindow::InitEvent(WidgetGUIEvent& event, nsIntPoint* aPoint)
{
if (nullptr == aPoint) { // use the point from the event
// get the message position in client coordinates
if (mWnd != nullptr) {
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();
event.timeStamp = GetMessageTimeStamp(event.time);
}
/**************************************************************
*
* 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(WidgetGUIEvent* event,
nsEventStatus& aStatus)
{
#ifdef WIDGET_DEBUG_OUTPUT
debug_DumpEvent(stdout,
event->widget,
event,
nsAutoCString("something"),
(int32_t) mWnd);
#endif // WIDGET_DEBUG_OUTPUT
aStatus = nsEventStatus_eIgnore;
// 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 (mAttachedWidgetListener) {
aStatus = mAttachedWidgetListener->HandleEvent(event, mUseAttachedEvents);
}
else if (mWidgetListener) {
aStatus = mWidgetListener->HandleEvent(event, mUseAttachedEvents);
}
// 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(uint32_t aMsg)
{
WidgetGUIEvent event(true, aMsg, this);
InitEvent(event);
bool result = DispatchWindowEvent(&event);
return result;
}
bool nsWindow::DispatchKeyboardEvent(WidgetGUIEvent* event)
{
nsEventStatus status;
DispatchEvent(event, status);
return ConvertStatus(status);
}
bool nsWindow::DispatchScrollEvent(WidgetGUIEvent* event)
{
nsEventStatus status;
DispatchEvent(event, status);
return ConvertStatus(status);
}
bool nsWindow::DispatchWindowEvent(WidgetGUIEvent* event)
{
nsEventStatus status;
DispatchEvent(event, status);
return ConvertStatus(status);
}
bool nsWindow::DispatchWindowEvent(WidgetGUIEvent* event,
nsEventStatus& aStatus)
{
DispatchEvent(event, aStatus);
return ConvertStatus(aStatus);
}
// 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, nullptr, 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(nullptr, 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);
}
}
bool nsWindow::DispatchPluginEvent(UINT aMessage,
WPARAM aWParam,
LPARAM aLParam,
bool aDispatchPendingEvents)
{
bool ret = nsWindowBase::DispatchPluginEvent(
WinUtils::InitMSG(aMessage, aWParam, aLParam, mWnd));
if (aDispatchPendingEvents && !Destroyed()) {
DispatchPendingEvents();
}
return ret;
}
// Deal with all sort of mouse event
bool nsWindow::DispatchMouseEvent(uint32_t aEventType, WPARAM wParam,
LPARAM lParam, bool aIsContextMenuKey,
int16_t aButton, uint16_t aInputSource)
{
bool result = false;
UserActivity();
if (!mWidgetListener) {
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);
WidgetMouseEvent event(true, aEventType, this, WidgetMouseEvent::eReal,
aIsContextMenuKey ? WidgetMouseEvent::eContextMenuKey :
WidgetMouseEvent::eNormal);
if (aEventType == NS_CONTEXTMENU && aIsContextMenuKey) {
nsIntPoint zero(0, 0);
InitEvent(event, &zero);
} else {
InitEvent(event, &eventPoint);
}
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(event);
event.button = aButton;
event.inputSource = aInputSource;
// Convert Mouse events generated by pen device or if mouse not generated from touch
event.convertToPointer =
aInputSource == nsIDOMMouseEvent::MOZ_SOURCE_PEN ||
!(WinUtils::GetIsMouseFromTouch(aEventType) && mTouchWindow);
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 = (DeprecatedAbs(sLastMousePoint.x - eventPoint.x) < (short)::GetSystemMetrics(SM_CXDOUBLECLK)) &&
(DeprecatedAbs(sLastMousePoint.y - eventPoint.y) < (short)::GetSystemMetrics(SM_CYDOUBLECLK));
BYTE eventButton;
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
eventButton = VK_LBUTTON;
break;
case WidgetMouseEvent::eMiddleButton:
eventButton = VK_MBUTTON;
break;
case WidgetMouseEvent::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) ?
WidgetMouseEvent::eTopLevel : WidgetMouseEvent::eChild;
}
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 WidgetMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONDOWN;
break;
case WidgetMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONDOWN;
break;
case WidgetMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONDOWN;
break;
default:
break;
}
break;
case NS_MOUSE_BUTTON_UP:
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONUP;
break;
case WidgetMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONUP;
break;
case WidgetMouseEvent::eRightButton:
pluginEvent.event = WM_RBUTTONUP;
break;
default:
break;
}
break;
case NS_MOUSE_DOUBLECLICK:
switch (aButton) {
case WidgetMouseEvent::eLeftButton:
pluginEvent.event = WM_LBUTTONDBLCLK;
break;
case WidgetMouseEvent::eMiddleButton:
pluginEvent.event = WM_MBUTTONDBLCLK;
break;
case WidgetMouseEvent::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 (mWidgetListener) {
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(LayoutDeviceIntPoint::ToUntyped(event.refPoint))) {
if (sCurrentWindow == nullptr || sCurrentWindow != this) {
if ((nullptr != sCurrentWindow) && (!sCurrentWindow->mInDtor)) {
LPARAM pos = sCurrentWindow->lParamToClient(lParamToScreen(lParam));
sCurrentWindow->DispatchMouseEvent(NS_MOUSE_EXIT, wParam, pos, false,
WidgetMouseEvent::eLeftButton,
aInputSource);
}
sCurrentWindow = this;
if (!mInDtor) {
LPARAM pos = sCurrentWindow->lParamToClient(lParamToScreen(lParam));
sCurrentWindow->DispatchMouseEvent(NS_MOUSE_ENTER, wParam, pos, false,
WidgetMouseEvent::eLeftButton,
aInputSource);
}
}
}
} else if (aEventType == NS_MOUSE_EXIT) {
if (sCurrentWindow == this) {
sCurrentWindow = nullptr;
}
}
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 EventListenerManager::HandleEvent()
// released it already.
return result;
}
return result;
}
void nsWindow::DispatchFocusToTopLevelWindow(bool aIsActivate)
{
if (aIsActivate)
sJustGotActivate = false;
sJustGotDeactivate = false;
// retrive the toplevel window or dialog
HWND curWnd = mWnd;
HWND toplevelWnd = nullptr;
while (curWnd) {
toplevelWnd = curWnd;
nsWindow *win = WinUtils::GetNSWindowPtr(curWnd);
if (win) {
nsWindowType wintype = win->WindowType();
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 && win->mWidgetListener) {
if (aIsActivate) {
win->mWidgetListener->WindowActivated();
} else {
if (!win->BlurEventsSuppressed()) {
win->mWidgetListener->WindowDeactivated();
}
}
}
}
}
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::MessageChannel::IsPumpingMessages(),
"Failed to prevent a nonqueued message from running!");
// Modal UI being displayed in windowless plugins.
if (mozilla::ipc::MessageChannel::IsSpinLoopActive() &&
(InSendMessageEx(nullptr) & (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(nullptr) & (ISMEX_REPLIED|ISMEX_SEND)) == ISMEX_SEND) {
wchar_t szClass[10];
HWND focusWnd = (HWND)lParam;
if (IsWindowVisible(focusWnd) &&
GetClassNameW(focusWnd, szClass,
sizeof(szClass)/sizeof(char16_t)) &&
!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(nullptr) & (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, int32_t x, int32_t 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, nullptr);
if (cmd) {
PostMessage(hWnd, WM_SYSCOMMAND, cmd, 0);
return true;
}
}
return false;
}
inline static mozilla::HangMonitor::ActivityType ActivityTypeForMessage(UINT msg)
{
if ((msg >= WM_KEYFIRST && msg <= WM_IME_KEYLAST) ||
(msg >= WM_MOUSEFIRST && msg <= WM_MOUSELAST) ||
(msg >= MOZ_WM_MOUSEWHEEL_FIRST && msg <= MOZ_WM_MOUSEWHEEL_LAST) ||
(msg >= NS_WM_IMEFIRST && msg <= NS_WM_IMELAST)) {
return mozilla::HangMonitor::kUIActivity;
}
// This may not actually be right, but we don't want to reset the timer if
// we're not actually processing a UI message.
return mozilla::HangMonitor::kActivityUIAVail;
}
// 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)
{
HangMonitor::NotifyActivity(ActivityTypeForMessage(msg));
return mozilla::CallWindowProcCrashProtected(WindowProcInternal, hWnd, msg, wParam, lParam);
}
LRESULT CALLBACK nsWindow::WindowProcInternal(HWND hWnd, UINT msg, WPARAM wParam, LPARAM 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 *targetWindow = WinUtils::GetNSWindowPtr(hWnd);
NS_ASSERTION(targetWindow, "nsWindow* is null!");
if (!targetWindow)
return ::DefWindowProcW(hWnd, msg, wParam, lParam);
// Hold the window for the life of this method, in case it gets
// destroyed during processing, unless we're in the dtor already.
nsCOMPtr<nsISupports> kungFuDeathGrip;
if (!targetWindow->mInDtor)
kungFuDeathGrip = do_QueryInterface((nsBaseWidget*)targetWindow);
targetWindow->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;
// Call ProcessMessage
LRESULT retValue;
if (targetWindow->ProcessMessage(msg, wParam, lParam, &retValue)) {
return retValue;
}
LRESULT res = ::CallWindowProcW(targetWindow->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,
MSGResult& aResult)
{
aResult.mResult = 0;
aResult.mConsumed = true;
bool eventDispatched = false;
switch (aMsg.message) {
case WM_CHAR:
case WM_SYSCHAR:
aResult.mResult = ProcessCharMessage(aMsg, &eventDispatched);
break;
case WM_KEYUP:
case WM_SYSKEYUP:
aResult.mResult = ProcessKeyUpMessage(aMsg, &eventDispatched);
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
aResult.mResult = 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) {
aResult.mConsumed = nsWindowBase::DispatchPluginEvent(aMsg);
}
if (!Destroyed()) {
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;
}
bool
nsWindow::ExternalHandlerProcessMessage(UINT aMessage,
WPARAM& aWParam,
LPARAM& aLParam,
MSGResult& aResult)
{
if (mWindowHook.Notify(mWnd, aMessage, aWParam, aLParam, aResult)) {
return true;
}
if (IMEHandler::ProcessMessage(this, aMessage, aWParam, aLParam, aResult)) {
return true;
}
if (MouseScrollHandler::ProcessMessage(this, aMessage, aWParam, aLParam,
aResult)) {
return true;
}
if (PluginHasFocus()) {
MSG nativeMsg = WinUtils::InitMSG(aMessage, aWParam, aLParam, mWnd);
if (ProcessMessageForPlugin(nativeMsg, aResult)) {
return true;
}
}
return false;
}
// The main windows message processing method.
bool
nsWindow::ProcessMessage(UINT msg, WPARAM& wParam, LPARAM& lParam,
LRESULT *aRetValue)
{
#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
MSGResult msgResult(aRetValue);
if (ExternalHandlerProcessMessage(msg, wParam, lParam, msgResult)) {
return (msgResult.mConsumed || !mWnd);
}
bool result = false; // call the default nsWindow proc
*aRetValue = 0;
// Glass hit testing w/custom transparent margins
LRESULT dwmHitResult;
if (mCustomNonClient &&
nsUXThemeData::CheckForCompositor() &&
WinUtils::dwmDwmDefWindowProcPtr(mWnd, msg, wParam, lParam, &dwmHitResult)) {
*aRetValue = dwmHitResult;
return true;
}
// (Large blocks of code should be broken out into OnEvent handlers.)
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", nullptr);
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(nullptr, "quit-application-granted", nullptr);
obsServ->NotifyObservers(nullptr, "quit-application-forced", nullptr);
obsServ->NotifyObservers(nullptr, "quit-application", nullptr);
obsServ->NotifyObservers(nullptr, "profile-change-net-teardown", context.get());
obsServ->NotifyObservers(nullptr, "profile-change-teardown", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change", context.get());
obsServ->NotifyObservers(nullptr, "profile-before-change2", context.get());
// Then a controlled but very quick exit.
_exit(0);
}
sCanQuit = TRI_UNKNOWN;
result = true;
break;
case WM_SYSCOLORCHANGE:
OnSysColorChanged();
break;
case WM_THEMECHANGED:
{
// Update non-client margin offsets
UpdateNonClientMargins();
nsUXThemeData::InitTitlebarInfo();
nsUXThemeData::UpdateNativeThemeInfo();
NotifyThemeChanged();
// Invalidate the window so that the repaint will
// pick up the new theme.
Invalidate(true, true, true);
}
break;
case WM_WTSSESSION_CHANGE:
{
switch (wParam) {
case WTS_CONSOLE_CONNECT:
case WTS_REMOTE_CONNECT:
case WTS_SESSION_UNLOCK:
// When a session becomes visible, we should invalidate.
Invalidate(true, true, true);
break;
default:
break;
}
}
break;
case WM_FONTCHANGE:
{
// We only handle this message for the hidden window,
// as we only need to update the (global) font list once
// for any given change, not once per window!
if (mWindowType != eWindowType_invisible) {
break;
}
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);
ForceFontUpdate();
} //if (NS_SUCCEEDED(rv))
}
break;
case WM_NCCALCSIZE:
{
if (mCustomNonClient) {
// If `wParam` is `FALSE`, `lParam` points to a `RECT` that contains
// the proposed window rectangle for our window. During our
// processing of the `WM_NCCALCSIZE` message, we are expected to
// modify the `RECT` that `lParam` points to, so that its value upon
// our return is the new client area. We must return 0 if `wParam`
// is `FALSE`.
//
// If `wParam` is `TRUE`, `lParam` points to a `NCCALCSIZE_PARAMS`
// struct. This struct contains an array of 3 `RECT`s, the first of
// which has the exact same meaning as the `RECT` that is pointed to
// by `lParam` when `wParam` is `FALSE`. The remaining `RECT`s, in
// conjunction with our return value, can
// be used to specify portions of the source and destination window
// rectangles that are valid and should be preserved. We opt not to
// implement an elaborate client-area preservation technique, and
// simply return 0, which means "preserve the entire old client area
// and align it with the upper-left corner of our new client area".
RECT *clientRect = wParam
? &(reinterpret_cast<NCCALCSIZE_PARAMS*>(lParam))->rgrc[0]
: (reinterpret_cast<RECT*>(lParam));
clientRect->top += (mCaptionHeight - mNonClientOffset.top);
clientRect->left += (mHorResizeMargin - mNonClientOffset.left);
clientRect->right -= (mHorResizeMargin - mNonClientOffset.right);
clientRect->bottom -= (mVertResizeMargin - mNonClientOffset.bottom);
result = true;
*aRetValue = 0;
}
break;
}
case WM_NCHITTEST:
{
if (mMouseTransparent) {
// Treat this window as transparent.
*aRetValue = HTTRANSPARENT;
result = true;
break;
}
/*
* 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.
*/
UpdateGetWindowInfoCaptionStatus(FALSE != wParam);
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;
// invalidate to trigger a paint
InvalidateNonClientRegion();
break;
} else {
// going inactive
*aRetValue = TRUE; // go ahead and deactive
result = true;
// 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_CLOSE: // close request
if (mWidgetListener)
mWidgetListener->RequestWindowClose(this);
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(nullptr, 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, mWnd);
result = ProcessCharMessage(nativeMsg, nullptr);
DispatchPendingEvents();
}
break;
case WM_SYSKEYUP:
case WM_KEYUP:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam, mWnd);
nativeMsg.time = ::GetMessageTime();
result = ProcessKeyUpMessage(nativeMsg, nullptr);
DispatchPendingEvents();
}
break;
case WM_SYSKEYDOWN:
case WM_KEYDOWN:
{
MSG nativeMsg = WinUtils::InitMSG(msg, wParam, lParam, mWnd);
result = ProcessKeyDownMessage(nativeMsg, nullptr);
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, WidgetMouseEvent::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, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
}
break;
case WM_LBUTTONUP:
{
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam, lParam,
false, WidgetMouseEvent::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,
WidgetMouseEvent::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 ?
WidgetMouseEvent::eLeftButton :
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
if (lParam != -1 && !result && mCustomNonClient) {
WidgetMouseEvent event(true, NS_MOUSE_MOZHITTEST, this,
WidgetMouseEvent::eReal,
WidgetMouseEvent::eNormal);
event.refPoint = LayoutDeviceIntPoint(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
event.inputSource = MOUSE_INPUT_SOURCE();
event.mFlags.mOnlyChromeDispatch = true;
if (DispatchWindowEvent(&event)) {
// 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,
WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam,
lParam, false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam,
lParam, false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_MBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam,
lParam, false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCMBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eMiddleButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, wParam,
lParam, false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, wParam,
lParam, false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_RBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, wParam,
lParam, false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONDOWN:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_DOWN, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONUP:
result = DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_NCRBUTTONDBLCLK:
result = DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0,
lParamToClient(lParam), false,
WidgetMouseEvent::eRightButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_EXITSIZEMOVE:
if (!sIsInMouseCapture) {
NotifySizeMoveDone();
}
break;
case WM_NCLBUTTONDBLCLK:
DispatchMouseEvent(NS_MOUSE_DOUBLECLICK, 0, lParamToClient(lParam),
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
result =
DispatchMouseEvent(NS_MOUSE_BUTTON_UP, 0, lParamToClient(lParam),
false, WidgetMouseEvent::eLeftButton,
MOUSE_INPUT_SOURCE());
DispatchPendingEvents();
break;
case WM_APPCOMMAND:
result = HandleAppCommandMsg(wParam, lParam, aRetValue);
break;
// 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
// gJustGotDeactivate flags and activate/deactivate once the focus
// events arrive.
case WM_ACTIVATE:
if (mWidgetListener) {
int32_t 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 deactivate right away.
if (HIWORD(wParam))
DispatchFocusToTopLevelWindow(false);
else
sJustGotDeactivate = true;
if (mIsTopWidgetWindow)
mLastKeyboardLayout = KeyboardLayout::GetInstance()->GetLayout();
} else {
StopFlashing();
sJustGotActivate = true;
WidgetMouseEvent event(true, NS_MOUSE_ACTIVATE, this,
WidgetMouseEvent::eReal);
InitEvent(event);
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(event);
DispatchWindowEvent(&event);
if (sSwitchKeyboardLayout && mLastKeyboardLayout)
ActivateKeyboardLayout(mLastKeyboardLayout, 0);
}
}
break;
case WM_MOUSEACTIVATE:
// 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.
if (IsPopup() && IsOwnerForegroundWindow()) {
*aRetValue = MA_NOACTIVATE;
result = true;
}
break;
case WM_WINDOWPOSCHANGING:
{
LPWINDOWPOS info = (LPWINDOWPOS)lParam;
OnWindowPosChanging(info);
result = true;
}
break;
case WM_GETMINMAXINFO:
{
MINMAXINFO* mmi = (MINMAXINFO*)lParam;
// Set the constraints. The minimum size should also be constrained to the
// default window maximum size so that it fits on screen.
mmi->ptMinTrackSize.x =
std::min((int32_t)mmi->ptMaxTrackSize.x,
std::max((int32_t)mmi->ptMinTrackSize.x, mSizeConstraints.mMinSize.width));
mmi->ptMinTrackSize.y =
std::min((int32_t)mmi->ptMaxTrackSize.y,
std::max((int32_t)mmi->ptMinTrackSize.y, mSizeConstraints.mMinSize.height));
mmi->ptMaxTrackSize.x = std::min((int32_t)mmi->ptMaxTrackSize.x, mSizeConstraints.mMaxSize.width);
mmi->ptMaxTrackSize.y = std::min((int32_t)mmi->ptMaxTrackSize.y, mSizeConstraints.mMaxSize.height);
}
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))) {
RedirectedKeyDownMessageManager::Forget();
}
if (sJustGotActivate) {
DispatchFocusToTopLevelWindow(true);
}
break;
case WM_KILLFOCUS:
if (sJustGotDeactivate) {
DispatchFocusToTopLevelWindow(false);
}
break;
case WM_WINDOWPOSCHANGED:
{
WINDOWPOS* wp = (LPWINDOWPOS)lParam;
OnWindowPosChanged(wp);
result = true;
}
break;
case WM_INPUTLANGCHANGEREQUEST:
*aRetValue = TRUE;
result = false;
break;
case WM_INPUTLANGCHANGE:
KeyboardLayout::GetInstance()->
OnLayoutChange(reinterpret_cast<HKL>(lParam));
result = false; // always pass to child window
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
a11y::Accessible* rootAccessible = GetAccessible(); // Held by a11y cache
if (rootAccessible) {
IAccessible *msaaAccessible = nullptr;
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_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();
BroadcastMsg(mWnd, WM_DWMCOMPOSITIONCHANGED);
NotifyThemeChanged();
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.
int32_t action = LOWORD(wParam);
if (action == UIS_SET || action == UIS_CLEAR) {
int32_t flags = HIWORD(wParam);
UIStateChangeType showAccelerators = UIStateChangeType_NoChange;
UIStateChangeType showFocusRings = UIStateChangeType_NoChange;
if (flags & UISF_HIDEACCEL)
showAccelerators = (action == UIS_SET) ? UIStateChangeType_Clear : UIStateChangeType_Set;
if (flags & UISF_HIDEFOCUS)
showFocusRings = (action == UIS_SET) ? UIStateChangeType_Clear : UIStateChangeType_Set;
NotifyUIStateChanged(showAccelerators, showFocusRings);
}
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.
if (gIsPointerEventsEnabled) {
result = false;
break;
}
GESTURENOTIFYSTRUCT * gestureinfo = (GESTURENOTIFYSTRUCT*)lParam;
nsPointWin touchPoint;
touchPoint = gestureinfo->ptsLocation;
touchPoint.ScreenToClient(mWnd);
WidgetGestureNotifyEvent gestureNotifyEvent(true,
NS_GESTURENOTIFY_EVENT_START, this);
gestureNotifyEvent.refPoint = LayoutDeviceIntPoint::FromUntyped(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:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_DELETE, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_CUT:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_CUT, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_COPY:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_COPY, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case WM_PASTE:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_PASTE, this);
DispatchWindowEvent(&command);
result = true;
}
break;
case EM_UNDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_UNDO, this);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_REDO:
{
WidgetContentCommandEvent 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) {
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_PASTE,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
}
break;
case EM_CANUNDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_UNDO,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
case EM_CANREDO:
{
WidgetContentCommandEvent command(true, NS_CONTENT_COMMAND_REDO,
this, true);
DispatchWindowEvent(&command);
*aRetValue = (LRESULT)(command.mSucceeded && command.mIsEnabled);
result = true;
}
break;
default:
{
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(false);
}
}
}
}
break;
case WM_SETTINGCHANGE:
if (IsWin8OrLater() && lParam &&
!wcsicmp(L"ConvertibleSlateMode", (wchar_t*)lParam)) {
// If we're switching into slate mode, switch to Metro for hardware
// that supports this feature if the pref is set.
if (GetSystemMetrics(SM_CONVERTIBLESLATEMODE) == 0 &&
Preferences::GetBool("browser.shell.desktop-auto-switch-enabled",
false)) {
nsCOMPtr<nsIAppStartup> appStartup(do_GetService(NS_APPSTARTUP_CONTRACTID));
if (appStartup) {
appStartup->Quit(nsIAppStartup::eForceQuit |
nsIAppStartup::eRestartTouchEnvironment);
}
}
}
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.
*
**************************************************************/
int32_t
nsWindow::ClientMarginHitTestPoint(int32_t mx, int32_t 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
int32_t testResult = HTCLIENT;
bool isResizable = (mBorderStyle & (eBorderStyle_all |
eBorderStyle_resizeh |
eBorderStyle_default)) > 0 ? true : false;
if (mSizeMode == nsSizeMode_Maximized)
isResizable = false;
// Ensure being accessible to borders of window. Even if contents are in
// this area, the area must behave as border.
nsIntMargin nonClientSize(std::max(mCaptionHeight - mNonClientOffset.top,
kResizableBorderMinSize),
std::max(mHorResizeMargin - mNonClientOffset.right,
kResizableBorderMinSize),
std::max(mVertResizeMargin - mNonClientOffset.bottom,
kResizableBorderMinSize),
std::max(mHorResizeMargin - mNonClientOffset.left,
kResizableBorderMinSize));
bool allowContentOverride = mSizeMode == nsSizeMode_Maximized ||
(mx >= winRect.left + nonClientSize.left &&
mx <= winRect.right - nonClientSize.right &&
my >= winRect.top + nonClientSize.top &&
my <= winRect.bottom - nonClientSize.bottom);
// The border size. If there is no content under mouse cursor, the border
// size should be larger than the values in system settings. Otherwise,
// contents under the mouse cursor should be able to override the behavior.
// E.g., user must expect that Firefox button always opens the popup menu
// even when the user clicks on the above edge of it.
nsIntMargin borderSize(std::max(nonClientSize.top, mVertResizeMargin),
std::max(nonClientSize.right, mHorResizeMargin),
std::max(nonClientSize.bottom, mVertResizeMargin),
std::max(nonClientSize.left, mHorResizeMargin));
bool top = false;
bool bottom = false;
bool left = false;
bool right = false;
if (my >= winRect.top && my < winRect.top + borderSize.top) {
top = true;
} else if (my <= winRect.bottom && my > winRect.bottom - borderSize.bottom) {
bottom = true;
}
// (the 2x case here doubles the resize area for corners)
int multiplier = (top || bottom) ? 2 : 1;
if (mx >= winRect.left &&
mx < winRect.left + (multiplier * borderSize.left)) {
left = true;
} else if (mx <= winRect.right &&
mx > winRect.right - (multiplier * borderSize.right)) {
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;
}
if (!sIsInMouseCapture && allowContentOverride) {
POINT pt = { mx, my };
::ScreenToClient(mWnd, &pt);
if (pt.x == mCachedHitTestPoint.x && pt.y == mCachedHitTestPoint.y &&
TimeStamp::Now() - mCachedHitTestTime < TimeDuration::FromMilliseconds(HITTEST_CACHE_LIFETIME_MS)) {
testResult = mCachedHitTestResult;
} else {
WidgetMouseEvent event(true, NS_MOUSE_MOZHITTEST, this,
WidgetMouseEvent::eReal,
WidgetMouseEvent::eNormal);
event.refPoint = LayoutDeviceIntPoint(pt.x, pt.y);
event.inputSource = MOUSE_INPUT_SOURCE();
event.mFlags.mOnlyChromeDispatch = true;
bool result = DispatchWindowEvent(&event);
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;
}
mCachedHitTestPoint = pt;
mCachedHitTestTime = TimeStamp::Now();
mCachedHitTestResult = testResult;
}
}
return testResult;
}
TimeStamp
nsWindow::GetMessageTimeStamp(LONG aEventTime)
{
// Conversion from native event time to timestamp is complicated by the fact
// that native event time wraps. Also, for consistency's sake we avoid calling
// ::GetTickCount() each time and for performance reasons we only use the
// TimeStamp::NowLoRes except when recording the first event's time.
// We currently require the event time to be passed in. This is an interim
// measure to avoid calling GetMessageTime twice for each event--once when
// storing the time directly and once when converting to a timestamp.
//
// Once we no longer store both a time and a timestamp on each event we can
// perform the call to GetMessageTime here instead.
DWORD eventTime = static_cast<DWORD>(aEventTime);
// Record first event time
if (sFirstEventTimeStamp.IsNull()) {
nsWindow::UpdateFirstEventTime(eventTime);
}
TimeStamp roughlyNow = TimeStamp::NowLoRes();
// If the event time is before the first event time there are two
// possibilities:
//
// a) Event time has wrapped
// b) The initial events were not delivered strictly in time order
//
// I'm not sure if (b) ever happens but even if it doesn't currently occur,
// it could come about if we change the way we fetch events.
//
// We can tell we have (b) if the event time is a little bit before the first
// event (i.e. less than half the range) and the timestamp is only a little
// bit past the first event timestamp (again less than half the range).
// In that case we should adjust the first event time so it really is the
// first event time.
if (eventTime < sFirstEventTime &&
sFirstEventTime - eventTime < kEventTimeHalfRange &&
roughlyNow - sFirstEventTimeStamp <
TimeDuration::FromMilliseconds(kEventTimeHalfRange)) {
UpdateFirstEventTime(eventTime);
}
double timeSinceFirstEvent =
sFirstEventTime <= eventTime
? eventTime - sFirstEventTime
: static_cast<double>(kEventTimeRange) + eventTime - sFirstEventTime;
TimeStamp eventTimeStamp =
sFirstEventTimeStamp + TimeDuration::FromMilliseconds(timeSinceFirstEvent);
// Event time may have wrapped several times since we recorded the first
// event time (it wraps every ~50 days) so we extend eventTimeStamp as
// needed.
double timesWrapped =
(roughlyNow - sFirstEventTimeStamp).ToMilliseconds() / kEventTimeRange;
int32_t cyclesToAdd = static_cast<int32_t>(timesWrapped); // floor
// There is some imprecision in the above calculation since we are using
// TimeStamp::NowLoRes and sFirstEventTime and sFirstEventTimeStamp may not
// be *exactly* the same moment. It is possible we think that time
// has *just* wrapped based on comparing timestamps, but actually the
// event time is *just about* to wrap; or vice versa.
// In the following, we detect this situation and adjust cyclesToAdd as
// necessary.
double intervalFraction = fmod(timesWrapped, 1.0);
// If our rough calculation of how many times we've wrapped based on comparing
// timestamps says we've just wrapped (specifically, less 10% past the wrap
// point), but the event time is just before the wrap point (again, within
// 10%), then we need to reduce the number of wraps by 1.
if (intervalFraction < 0.1 && timeSinceFirstEvent > kEventTimeRange * 0.9) {
cyclesToAdd--;
// Likewise, if our rough calculation says we've just wrapped but actually the
// event time is just after the wrap point, we need to add an extra wrap.
} else if (intervalFraction > 0.9 &&
timeSinceFirstEvent < kEventTimeRange * 0.1) {
cyclesToAdd++;
}
if (cyclesToAdd > 0) {
eventTimeStamp +=
TimeDuration::FromMilliseconds(kEventTimeRange * cyclesToAdd);
}
return eventTimeStamp;
}
void
nsWindow::UpdateFirstEventTime(DWORD aEventTime)
{
sFirstEventTime = aEventTime;
DWORD currentTime = ::GetTickCount();
TimeStamp currentTimeStamp = TimeStamp::Now();
double timeSinceFirstEvent =
aEventTime <= currentTime
? currentTime - aEventTime
: static_cast<double>(kEventTimeRange) + currentTime - aEventTime;
sFirstEventTimeStamp =
currentTimeStamp - TimeDuration::FromMilliseconds(timeSinceFirstEvent);
}
void nsWindow::PostSleepWakeNotification(const bool aIsSleepMode)
{
if (aIsSleepMode == gIsSleepMode)
return;
gIsSleepMode = aIsSleepMode;
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService)
observerService->NotifyObservers(nullptr,
aIsSleepMode ? NS_WIDGET_SLEEP_OBSERVER_TOPIC :
NS_WIDGET_WAKE_OBSERVER_TOPIC, nullptr);
}
LRESULT nsWindow::ProcessCharMessage(const MSG &aMsg, bool *aEventDispatched)
{
if (IMEHandler::IsComposingOn(this)) {
IMEHandler::NotifyIME(this, REQUEST_TO_COMMIT_COMPOSITION);
}
// 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)
ModifierKeyState modKeyState;
NativeKey nativeKey(this, aMsg, modKeyState);
return static_cast<LRESULT>(nativeKey.HandleCharMessage(aMsg,
aEventDispatched));
}
LRESULT nsWindow::ProcessKeyUpMessage(const MSG &aMsg, bool *aEventDispatched)
{
if (IMEHandler::IsComposingOn(this)) {
return 0;
}
ModifierKeyState modKeyState;
NativeKey nativeKey(this, aMsg, modKeyState);
return static_cast<LRESULT>(nativeKey.HandleKeyUpMessage(aEventDispatched));
}
LRESULT nsWindow::ProcessKeyDownMessage(const MSG &aMsg,
bool *aEventDispatched)
{
// If this method doesn't call NativeKey::HandleKeyDownMessage(), this method
// must clean up the redirected message information itself. For more
// information, see above comment of
// RedirectedKeyDownMessageManager::AutoFlusher class definition in
// KeyboardLayout.h.
RedirectedKeyDownMessageManager::AutoFlusher redirectedMsgFlusher(this, aMsg);
ModifierKeyState modKeyState;
LRESULT result = 0;
if (!IMEHandler::IsComposingOn(this)) {
NativeKey nativeKey(this, aMsg, modKeyState);
result =
static_cast<LRESULT>(nativeKey.HandleKeyDownMessage(aEventDispatched));
// HandleKeyDownMessage cleaned up the redirected message information
// itself, so, we should do nothing.
redirectedMsgFlusher.Cancel();
}
if (aMsg.wParam == VK_MENU ||
(aMsg.wParam == VK_F10 && !modKeyState.IsShift())) {
// 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(int32_t aNativeKeyboardLayout,
int32_t aNativeKeyCode,
uint32_t aModifierFlags,
const nsAString& aCharacters,
const nsAString& aUnmodifiedCharacters)
{
KeyboardLayout* keyboardLayout = KeyboardLayout::GetInstance();
return keyboardLayout->SynthesizeNativeKeyEvent(
this, aNativeKeyboardLayout, aNativeKeyCode, aModifierFlags,
aCharacters, aUnmodifiedCharacters);
}
nsresult
nsWindow::SynthesizeNativeMouseEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
uint32_t aModifierFlags)
{
::SetCursorPos(aPoint.x, 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;
}
nsresult
nsWindow::SynthesizeNativeMouseScrollEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
double aDeltaX,
double aDeltaY,
double aDeltaZ,
uint32_t aModifierFlags,
uint32_t aAdditionalFlags)
{
return MouseScrollHandler::SynthesizeNativeMouseScrollEvent(
this, aPoint, aNativeMessage,
(aNativeMessage == WM_MOUSEWHEEL || aNativeMessage == WM_VSCROLL) ?
static_cast<int32_t>(aDeltaY) : static_cast<int32_t>(aDeltaX),
aModifierFlags, aAdditionalFlags);
}
/**************************************************************
*
* SECTION: OnXXX message handlers
*
* For message handlers that need to be broken out or
* implemented in specific platform code.
*
**************************************************************/
void nsWindow::OnWindowPosChanged(WINDOWPOS* wp)
{
if (wp == nullptr)
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;
WINDOWPLACEMENT pl;
pl.length = sizeof(pl);
::GetWindowPlacement(mWnd, &pl);
// Windows has just changed the size mode of this window. The call to
// SizeModeChanged 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)
if (pl.showCmd == SW_SHOWMAXIMIZED)
mSizeMode = (mFullscreenMode ? nsSizeMode_Fullscreen : nsSizeMode_Maximized);
else if (pl.showCmd == SW_SHOWMINIMIZED)
mSizeMode = nsSizeMode_Minimized;
else if (mFullscreenMode)
mSizeMode = nsSizeMode_Fullscreen;
else
mSizeMode = nsSizeMode_Normal;
// 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 == 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
if (mWidgetListener)
mWidgetListener->SizeModeChanged(mSizeMode);
// If window was restored, window activation was bypassed during the
// SetSizeMode call originating from OnWindowPosChanging to avoid saving
// pre-restore attributes. Force activation now to get correct attributes.
if (mLastSizeMode != nsSizeMode_Normal && mSizeMode == nsSizeMode_Normal)
DispatchFocusToTopLevelWindow(true);
// Skip window size change events below on minimization.
if (mSizeMode == nsSizeMode_Minimized)
return;
}
// Handle window position changes
if (!(wp->flags & SWP_NOMOVE)) {
mBounds.x = wp->x;
mBounds.y = wp->y;
NotifyWindowMoved(wp->x, wp->y);
}
// Handle window size changes
if (!(wp->flags & SWP_NOSIZE)) {
RECT r;
int32_t 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, nullptr,
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, nullptr,
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.
if (mSizeMode == nsSizeMode_Maximized) {
if (UpdateNonClientMargins(nsSizeMode_Maximized, true)) {
// gecko resize event already sent by UpdateNonClientMargins.
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
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);
nsSizeMode 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;
if (mWidgetListener)
mWidgetListener->SizeModeChanged(sizeMode);
UpdateNonClientMargins(sizeMode, false);
}
// enforce local z-order rules
if (!(info->flags & SWP_NOZORDER)) {
HWND hwndAfter = info->hwndInsertAfter;
nsWindow *aboveWindow = 0;
nsWindowZ placement;
if (hwndAfter == HWND_BOTTOM)
placement = nsWindowZBottom;
else if (hwndAfter == HWND_TOP || hwndAfter == HWND_TOPMOST || hwndAfter == HWND_NOTOPMOST)
placement = nsWindowZTop;
else {
placement = nsWindowZRelative;
aboveWindow = WinUtils::GetNSWindowPtr(hwndAfter);
}
if (mWidgetListener) {
nsCOMPtr<nsIWidget> actualBelow = nullptr;
if (mWidgetListener->ZLevelChanged(false, &placement,
aboveWindow, getter_AddRefs(actualBelow))) {
if (placement == nsWindowZBottom)
info->hwndInsertAfter = HWND_BOTTOM;
else if (placement == nsWindowZTop)
info->hwndInsertAfter = HWND_TOP;
else {
info->hwndInsertAfter = (HWND)actualBelow->GetNativeData(NS_NATIVE_WINDOW);
}
}
}
}
// 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(0);
}
}
bool nsWindow::OnTouch(WPARAM wParam, LPARAM lParam)
{
uint32_t cInputs = LOWORD(wParam);
PTOUCHINPUT pInputs = new TOUCHINPUT[cInputs];
if (mGesture.GetTouchInputInfo((HTOUCHINPUT)lParam, cInputs, pInputs)) {
WidgetTouchEvent* touchEventToSend = nullptr;
WidgetTouchEvent* touchEndEventToSend = nullptr;
nsEventStatus status;
// Walk across the touch point array processing each contact point
for (uint32_t i = 0; i < cInputs; i++) {
uint32_t msg;
if (pInputs[i].dwFlags & (TOUCHEVENTF_DOWN | TOUCHEVENTF_MOVE)) {
// Create a standard touch event to send
if (!touchEventToSend) {
touchEventToSend = new WidgetTouchEvent(true, NS_TOUCH_MOVE, this);
touchEventToSend->time = ::GetMessageTime();
touchEventToSend->timeStamp =
GetMessageTimeStamp(touchEventToSend->time);
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(*touchEventToSend);
}
// Pres shell expects this event to be a NS_TOUCH_START if new contact
// points have been added since the last event sent.
if (pInputs[i].dwFlags & TOUCHEVENTF_DOWN) {
touchEventToSend->message = msg = NS_TOUCH_START;
} else {
msg = NS_TOUCH_MOVE;
}
} else if (pInputs[i].dwFlags & TOUCHEVENTF_UP) {
// Pres shell expects removed contacts points to be delivered in a
// separate NS_TOUCH_END event containing only the contact points
// that were removed.
if (!touchEndEventToSend) {
touchEndEventToSend = new WidgetTouchEvent(true, NS_TOUCH_END, this);
touchEndEventToSend->time = ::GetMessageTime();
touchEndEventToSend->timeStamp =
GetMessageTimeStamp(touchEndEventToSend->time);
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(*touchEndEventToSend);
}
msg = NS_TOUCH_END;
} else {
// Filter out spurious Windows events we don't understand, like palm
// contact.
continue;
}
// Setup the touch point we'll append to the touch event array
nsPointWin touchPoint;
touchPoint.x = TOUCH_COORD_TO_PIXEL(pInputs[i].x);
touchPoint.y = TOUCH_COORD_TO_PIXEL(pInputs[i].y);
touchPoint.ScreenToClient(mWnd);
nsRefPtr<Touch> touch =
new Touch(pInputs[i].dwID,
touchPoint,
/* radius, if known */
pInputs[i].dwFlags & TOUCHINPUTMASKF_CONTACTAREA ?
nsIntPoint(
TOUCH_COORD_TO_PIXEL(pInputs[i].cxContact) / 2,
TOUCH_COORD_TO_PIXEL(pInputs[i].cyContact) / 2) :
nsIntPoint(1,1),
/* rotation angle and force */
0.0f, 0.0f);
// Append to the appropriate event
if (msg == NS_TOUCH_START || msg == NS_TOUCH_MOVE) {
touchEventToSend->touches.AppendElement(touch);
} else {
touchEndEventToSend->touches.AppendElement(touch);
}
}
// Dispatch touch start and move event if we have one.
if (touchEventToSend) {
DispatchEvent(touchEventToSend, status);
delete touchEventToSend;
}
// Dispatch touch end event if we have one.
if (touchEndEventToSend) {
DispatchEvent(touchEndEventToSend, status);
delete touchEndEventToSend;
}
}
delete [] pInputs;
mGesture.CloseTouchInputHandle((HTOUCHINPUT)lParam);
return true;
}
static int32_t RoundDown(double aDouble)
{
return aDouble > 0 ? static_cast<int32_t>(floor(aDouble)) :
static_cast<int32_t>(ceil(aDouble));
}
// Gesture event processing. Handles WM_GESTURE events.
bool nsWindow::OnGesture(WPARAM wParam, LPARAM lParam)
{
if (gIsPointerEventsEnabled) {
return false;
}
// Treatment for pan events which translate into scroll events:
if (mGesture.IsPanEvent(lParam)) {
if ( !mGesture.ProcessPanMessage(mWnd, wParam, lParam) )
return false; // ignore
nsEventStatus status;
WidgetWheelEvent wheelEvent(true, NS_WHEEL_WHEEL, this);
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(wheelEvent);
wheelEvent.button = 0;
wheelEvent.time = ::GetMessageTime();
wheelEvent.timeStamp = GetMessageTimeStamp(wheelEvent.time);
wheelEvent.inputSource = nsIDOMMouseEvent::MOZ_SOURCE_TOUCH;
bool endFeedback = true;
if (mGesture.PanDeltaToPixelScroll(wheelEvent)) {
DispatchEvent(&wheelEvent, status);
}
if (mDisplayPanFeedback) {
mGesture.UpdatePanFeedbackX(mWnd,
DeprecatedAbs(RoundDown(wheelEvent.overflowDeltaX)),
endFeedback);
mGesture.UpdatePanFeedbackY(mWnd,
DeprecatedAbs(RoundDown(wheelEvent.overflowDeltaY)),
endFeedback);
mGesture.PanFeedbackFinalize(mWnd, endFeedback);
}
mGesture.CloseGestureInfoHandle((HGESTUREINFO)lParam);
return true;
}
// Other gestures translate into simple gesture events:
WidgetSimpleGestureEvent event(true, 0, this);
if ( !mGesture.ProcessGestureMessage(mWnd, wParam, lParam, event) ) {
return false; // fall through to DefWndProc
}
// Polish up and send off the new event
ModifierKeyState modifierKeyState;
modifierKeyState.InitInputEvent(event);
event.button = 0;
event.time = ::GetMessageTime();
event.timeStamp = GetMessageTimeStamp(event.time);
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 BOOL WINAPI EnumFirstChild(HWND hwnd, LPARAM lParam)
{
*((HWND*)lParam) = hwnd;
return FALSE;
}
static void InvalidatePluginAsWorkaround(nsWindow *aWindow, const nsIntRect &aRect)
{
aWindow->Invalidate(aRect);
// XXX - Even more evil workaround!! See bug 762948, flash's bottom
// level sandboxed window doesn't seem to get our invalidate. We send
// an invalidate to it manually. This is totally specialized for this
// bug, for other child window structures this will just be a more or
// less bogus invalidate but since that should not have any bad
// side-effects this will have to do for now.
HWND current = (HWND)aWindow->GetNativeData(NS_NATIVE_WINDOW);
RECT windowRect;
RECT parentRect;
::GetWindowRect(current, &parentRect);
HWND next = current;
do {
current = next;
::EnumChildWindows(current, &EnumFirstChild, (LPARAM)&next);
::GetWindowRect(next, &windowRect);
// This is relative to the screen, adjust it to be relative to the
// window we're reconfiguring.
windowRect.left -= parentRect.left;
windowRect.top -= parentRect.top;
} while (next != current && windowRect.top == 0 && windowRect.left == 0);
if (windowRect.top == 0 && windowRect.left == 0) {
RECT rect;
rect.left = aRect.x;
rect.top = aRect.y;
rect.right = aRect.XMost();
rect.bottom = aRect.YMost();
::InvalidateRect(next, &rect, FALSE);
}
}
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 (uint32_t 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() != LayersBackend::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);
nsIntRect toInvalidate = r.GetBounds();
InvalidatePluginAsWorkaround(w, toInvalidate);
}
}
rv = w->SetWindowClipRegion(configuration.mClipRegion, false);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
static HRGN
CreateHRGNFromArray(const nsTArray<nsIntRect>& aRects)
{
int32_t size = sizeof(RGNDATAHEADER) + sizeof(RECT)*aRects.Length();
nsAutoTArray<uint8_t,100> buf;
buf.SetLength(size);
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 (uint32_t 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(nullptr, buf.Length(), data);
}
static void
ArrayFromRegion(const nsIntRegion& aRegion, nsTArray<nsIntRect>& aRects)
{
const nsIntRect* r;
for (nsIntRegionRectIterator iter(aRegion); (r = iter.Next());) {
aRects.AppendElement(*r);
}
}
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, rects);
// 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 destroy notification.
if (!mInDtor)
NotifyWindowDestroyed();
// Prevent the widget from sending additional events.
mWidgetListener = nullptr;
mAttachedWidgetListener = nullptr;
// Unregister notifications from terminal services
::WTSUnRegisterSessionNotification(mWnd);
// 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 mWidgetListener is cleared and the subclass is reset, sCurrentWindow can be
// cleared. (It's used in tracking windows for mouse events.)
if (sCurrentWindow == this)
sCurrentWindow = nullptr;
// 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(nullptr)'s
// remove child on the parent already took place in nsBaseWidget's Destroy call above.
//SetParent(nullptr);
mParent = nullptr;
// 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.
nsIRollupListener* rollupListener = nsBaseWidget::GetActiveRollupListener();
nsCOMPtr<nsIWidget> rollupWidget;
if (rollupListener) {
rollupWidget = rollupListener->GetRollupWidget();
}
if (this == rollupWidget) {
if ( rollupListener )
rollupListener->Rollup(0, nullptr, nullptr);
CaptureRollupEvents(nullptr, false);
}
IMEHandler::OnDestroyWindow(this);
// Turn off mouse trails if enabled.
MouseTrailer* mtrailer = nsToolkit::gMouseTrailer;
if (mtrailer) {
if (mtrailer->GetMouseTrailerWindow() == mWnd)
mtrailer->DestroyTimer();
if (mtrailer->GetCaptureWindow() == mWnd)
mtrailer->SetCaptureWindow(nullptr);
}
// Free GDI window class objects
if (mBrush) {
VERIFY(::DeleteObject(mBrush));
mBrush = nullptr;
}
// 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 = nullptr;
}
// Send a resize message to the listener
bool nsWindow::OnResize(nsIntRect &aWindowRect)
{
bool result = mWidgetListener ?
mWidgetListener->WindowResized(this, aWindowRect.width, aWindowRect.height) : false;
// If there is an attached view, inform it as well as the normal widget listener.
if (mAttachedWidgetListener) {
return mAttachedWidgetListener->WindowResized(this, aWindowRect.width, aWindowRect.height);
}
return result;
}
bool nsWindow::OnHotKey(WPARAM wParam, LPARAM lParam)
{
return true;
}
// Can be overriden. Controls auto-erase of background.
bool nsWindow::AutoErase(HDC dc)
{
return false;
}
void
nsWindow::AllowD3D9Callback(nsWindow *aWindow)
{
if (aWindow->mLayerManager && !aWindow->ShouldUseOffMainThreadCompositing()) {
aWindow->mLayerManager->Destroy();
aWindow->mLayerManager = nullptr;
}
}
void
nsWindow::AllowD3D9WithReinitializeCallback(nsWindow *aWindow)
{
if (aWindow->mLayerManager && !aWindow->ShouldUseOffMainThreadCompositing()) {
aWindow->mLayerManager->Destroy();
aWindow->mLayerManager = nullptr;
(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. If we're using OMTC we don't want to
// recreate out layer manager and its compositor either. This is even
// more wasteful.
//
// 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::ShouldUseOffMainThreadCompositing()
{
// 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 (mTransparencyMode == eTransparencyTransparent) {
return false;
}
return nsBaseWidget::ShouldUseOffMainThreadCompositing();
}
void
nsWindow::GetPreferredCompositorBackends(nsTArray<LayersBackend>& aHints)
{
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 (!(prefs.mDisableAcceleration ||
mTransparencyMode == eTransparencyTransparent)) {
if (prefs.mPreferOpenGL) {
aHints.AppendElement(LayersBackend::LAYERS_OPENGL);
}
if (!prefs.mPreferD3D9) {
aHints.AppendElement(LayersBackend::LAYERS_D3D11);
}
aHints.AppendElement(LayersBackend::LAYERS_D3D9);
}
aHints.AppendElement(LayersBackend::LAYERS_BASIC);
}
void
nsWindow::WindowUsesOMTC()
{
ULONG_PTR style = ::GetClassLongPtr(mWnd, GCL_STYLE);
if (!style) {
NS_WARNING("Could not get window class style");
return;
}
style |= CS_HREDRAW | CS_VREDRAW;
DebugOnly<ULONG_PTR> result = ::SetClassLongPtr(mWnd, GCL_STYLE, style);
NS_WARN_IF_FALSE(result, "Could not reset window class style");
}
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) {
int32_t 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.
NotifySysColorChanged();
}
}
/**************************************************************
**************************************************************
**
** BLOCK: IME management and accessibility
**
** Handles managing IME input and accessibility.
**
**************************************************************
**************************************************************/
NS_IMETHODIMP
nsWindow::NotifyIME(const IMENotification& aIMENotification)
{
return IMEHandler::NotifyIME(this, aIMENotification);
}
NS_IMETHODIMP_(void)
nsWindow::SetInputContext(const InputContext& aContext,
const InputContextAction& aAction)
{
InputContext newInputContext = aContext;
IMEHandler::SetInputContext(this, newInputContext, aAction);
mInputContext = newInputContext;
}
NS_IMETHODIMP_(InputContext)
nsWindow::GetInputContext()
{
mInputContext.mIMEState.mOpen = IMEState::CLOSED;
if (WinUtils::IsIMEEnabled(mInputContext) && IMEHandler::GetOpenState(this)) {
mInputContext.mIMEState.mOpen = IMEState::OPEN;
} else {
mInputContext.mIMEState.mOpen = IMEState::CLOSED;
}
return mInputContext;
}
NS_IMETHODIMP
nsWindow::GetToggledKeyState(uint32_t 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;
}
nsIMEUpdatePreference
nsWindow::GetIMEUpdatePreference()
{
return IMEHandler::GetUpdatePreference();
}
#ifdef ACCESSIBILITY
#ifdef DEBUG
#define NS_LOG_WMGETOBJECT(aWnd, aHwnd, aAcc) \
if (a11y::logging::IsEnabled(a11y::logging::ePlatforms)) { \
printf("Get the window:\n {\n HWND: %d, parent HWND: %d, wndobj: %p,\n",\
aHwnd, ::GetParent(aHwnd), aWnd); \
printf(" acc: %p", aAcc); \
if (aAcc) { \
nsAutoString name; \
aAcc->Name(name); \
printf(", accname: %s", NS_ConvertUTF16toUTF8(name).get()); \
} \
printf("\n }\n"); \
}
#else
#define NS_LOG_WMGETOBJECT(aWnd, aHwnd, aAcc)
#endif
a11y::Accessible*
nsWindow::GetAccessible()
{
// If the pref was ePlatformIsDisabled, return null here, disabling a11y.
if (a11y::PlatformDisabledState() == a11y::ePlatformIsDisabled)
return nullptr;
if (mInDtor || mOnDestroyCalled || mWindowType == eWindowType_invisible) {
return nullptr;
}
// In case of popup window return a popup accessible.
nsView* view = nsView::GetViewFor(this);
if (view) {
nsIFrame* frame = view->GetFrame();
if (frame && nsLayoutUtils::IsPopup(frame)) {
nsCOMPtr<nsIAccessibilityService> accService =
services::GetAccessibilityService();
if (accService) {
a11y::DocAccessible* docAcc =
GetAccService()->GetDocAccessible(frame->PresContext()->PresShell());
if (docAcc) {
NS_LOG_WMGETOBJECT(this, mWnd,
docAcc->GetAccessibleOrDescendant(frame->GetContent()));
return docAcc->GetAccessibleOrDescendant(frame->GetContent());
}
}
}
}
// otherwise root document accessible.
NS_LOG_WMGETOBJECT(this, mWnd, GetRootAccessible());
return GetRootAccessible();
}
#endif
/**************************************************************
**************************************************************
**
** BLOCK: Transparency
**
** Window transparency helpers.
**
**************************************************************
**************************************************************/
#ifdef MOZ_XUL
void nsWindow::ResizeTranslucentWindow(int32_t aNewWidth, int32_t aNewHeight, bool force)
{
if (!force && aNewWidth == mBounds.width && aNewHeight == mBounds.height)
return;
nsRefPtr<gfxWindowsSurface> newSurface =
new gfxWindowsSurface(gfxIntSize(aNewWidth, aNewHeight), gfxImageFormat::ARGB32);
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 = nullptr;
mMemoryDC = nullptr;
}
}
void nsWindow::ClearTranslucentWindow()
{
if (mTransparentSurface) {
IntSize size = ToIntSize(mTransparentSurface->GetSize());
RefPtr<DrawTarget> drawTarget = gfxPlatform::GetPlatform()->
CreateDrawTargetForSurface(mTransparentSurface, size);
drawTarget->ClearRect(Rect(0, 0, size.width, size.height));
UpdateTranslucentWindow();
}
}
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);
// perform the alpha blend
bool updateSuccesful =
::UpdateLayeredWindow(hWnd, nullptr, (POINT*)&winRect, &winSize, mMemoryDC,
&srcPos, 0, &bf, ULW_ALPHA);
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(nullptr, 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 != nullptr) {
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,
nullptr, 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,
nullptr, 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,
nullptr, 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 = nullptr;
}
if (sMsgFilterHook) {
DISPLAY_NMM_PRT("***** Unhooking sMsgFilterHook!\n");
if (!::UnhookWindowsHookEx(sMsgFilterHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sMsgFilterHook!\n");
}
sMsgFilterHook = nullptr;
}
if (sCallMouseHook) {
DISPLAY_NMM_PRT("***** Unhooking sCallMouseHook!\n");
if (!::UnhookWindowsHookEx(sCallMouseHook)) {
DISPLAY_NMM_PRT("***** UnhookWindowsHookEx failed for sCallMouseHook!\n");
}
sCallMouseHook = nullptr;
}
}
// 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 nullptr then we need to use the ID to kill the timer
BOOL status = ::KillTimer(nullptr, sHookTimerId);
NS_ASSERTION(status, "Hook Timer was not killed.");
sHookTimerId = 0;
}
if (sRollupMsgId != 0) {
// Note: DealWithPopups does the check to make sure that the rollup widget is set.
LRESULT popupHandlingResult;
nsAutoRollup autoRollup;
DealWithPopups(sRollupMsgWnd, sRollupMsgId, 0, 0, &popupHandlingResult);
sRollupMsgId = 0;
sRollupMsgWnd = nullptr;
}
}
BOOL CALLBACK nsWindow::ClearResourcesCallback(HWND aWnd, LPARAM aMsg)
{
nsWindow *window = WinUtils::GetNSWindowPtr(aWnd);
if (window) {
window->ClearCachedResources();
}
return TRUE;
}
void
nsWindow::ClearCachedResources()
{
if (mLayerManager &&
mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC) {
mLayerManager->ClearCachedResources();
}
::EnumChildWindows(mWnd, nsWindow::ClearResourcesCallback, 0);
}
static bool IsDifferentThreadWindow(HWND aWnd)
{
return ::GetCurrentThreadId() != ::GetWindowThreadProcessId(aWnd, nullptr);
}
// static
bool
nsWindow::EventIsInsideWindow(nsWindow* aWindow)
{
RECT r;
::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 static_cast<bool>(::PtInRect(&r, mp));
}
// static
bool
nsWindow::GetPopupsToRollup(nsIRollupListener* aRollupListener,
uint32_t* aPopupsToRollup)
{
// If we're dealing with menus, we probably have submenus and we don't want
// to rollup some of them if the click is in a parent menu of the current
// submenu.
*aPopupsToRollup = UINT32_MAX;
nsAutoTArray<nsIWidget*, 5> widgetChain;
uint32_t sameTypeCount =
aRollupListener->GetSubmenuWidgetChain(&widgetChain);
for (uint32_t i = 0; i < widgetChain.Length(); ++i) {
nsIWidget* widget = widgetChain[i];
if (EventIsInsideWindow(static_cast<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) {
return false;
}
*aPopupsToRollup = sameTypeCount;
break;
}
}
return true;
}
// static
bool
nsWindow::NeedsToHandleNCActivateDelayed(HWND aWnd)
{
// While popup is open, popup window might be activated by other application.
// At this time, we need to take back focus to the previous window but it
// causes flickering its nonclient area because WM_NCACTIVATE comes before
// WM_ACTIVATE and we cannot know which window will take focus at receiving
// WM_NCACTIVATE. Therefore, we need a hack for preventing the flickerling.
//
// If non-popup window receives WM_NCACTIVATE at deactivating, default
// wndproc shouldn't handle it as deactivating. Instead, at receiving
// WM_ACTIVIATE after that, WM_NCACTIVATE should be sent again manually.
// This returns true if the window needs to handle WM_NCACTIVATE later.
nsWindow* window = WinUtils::GetNSWindowPtr(aWnd);
return window && !window->IsPopup();
}
// static
bool
nsWindow::DealWithPopups(HWND aWnd, UINT aMessage,
WPARAM aWParam, LPARAM aLParam, LRESULT* aResult)
{
NS_ASSERTION(aResult, "Bad outResult");
// XXX Why do we use the return value of WM_MOUSEACTIVATE for all messages?
*aResult = MA_NOACTIVATE;
if (!::IsWindowVisible(aWnd)) {
return false;
}
nsIRollupListener* rollupListener = nsBaseWidget::GetActiveRollupListener();
NS_ENSURE_TRUE(rollupListener, false);
nsCOMPtr<nsIWidget> popup = rollupListener->GetRollupWidget();
if (!popup) {
return false;
}
static bool sSendingNCACTIVATE = false;
static bool sPendingNCACTIVATE = false;
uint32_t popupsToRollup = UINT32_MAX;
nsWindow* popupWindow = static_cast<nsWindow*>(popup.get());
UINT nativeMessage = WinUtils::GetNativeMessage(aMessage);
switch (nativeMessage) {
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_NCLBUTTONDOWN:
case WM_NCRBUTTONDOWN:
case WM_NCMBUTTONDOWN:
if (!EventIsInsideWindow(popupWindow) &&
GetPopupsToRollup(rollupListener, &popupsToRollup)) {
break;
}
return false;
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
// We need to check if the popup thinks that it should cause closing
// itself when mouse wheel events are fired outside the rollup widget.
if (!EventIsInsideWindow(popupWindow)) {
*aResult = MA_ACTIVATE;
if (rollupListener->ShouldRollupOnMouseWheelEvent() &&
GetPopupsToRollup(rollupListener, &popupsToRollup)) {
break;
}
}
return false;
case WM_ACTIVATEAPP:
break;
case WM_ACTIVATE:
// NOTE: Don't handle WA_INACTIVE for preventing popup taking focus
// because we cannot distinguish it's caused by mouse or not.
if (LOWORD(aWParam) == WA_ACTIVE && aLParam) {
nsWindow* window = WinUtils::GetNSWindowPtr(aWnd);
if (window && window->IsPopup()) {
// Cancel notifying widget listeners of deactivating the previous
// active window (see WM_KILLFOCUS case in ProcessMessage()).
sJustGotDeactivate = false;
// Reactivate the window later.
::PostMessageW(aWnd, MOZ_WM_REACTIVATE, aWParam, aLParam);
return true;
}
// Don't rollup the popup when focus moves back to the parent window
// from a popup because such case is caused by strange mouse drivers.
nsWindow* prevWindow =
WinUtils::GetNSWindowPtr(reinterpret_cast<HWND>(aLParam));
if (prevWindow && prevWindow->IsPopup()) {
return false;
}
} else if (LOWORD(aWParam) == WA_INACTIVE) {
nsWindow* activeWindow =
WinUtils::GetNSWindowPtr(reinterpret_cast<HWND>(aLParam));
if (sPendingNCACTIVATE && NeedsToHandleNCActivateDelayed(aWnd)) {
// If focus moves to non-popup widget or focusable popup, the window
// needs to update its nonclient area.
if (!activeWindow || !activeWindow->IsPopup()) {
sSendingNCACTIVATE = true;
::SendMessageW(aWnd, WM_NCACTIVATE, false, 0);
sSendingNCACTIVATE = false;
}
sPendingNCACTIVATE = false;
}
// If focus moves from/to popup, we don't need to rollup the popup
// because such case is caused by strange mouse drivers.
if (activeWindow) {
if (activeWindow->IsPopup()) {
return false;
}
nsWindow* deactiveWindow = WinUtils::GetNSWindowPtr(aWnd);
if (deactiveWindow && deactiveWindow->IsPopup()) {
return false;
}
}
} else if (LOWORD(aWParam) == WA_CLICKACTIVE) {
// If the WM_ACTIVATE message is caused by a click in a popup,
// we should not rollup any popups.
if (EventIsInsideWindow(popupWindow) ||
!GetPopupsToRollup(rollupListener, &popupsToRollup)) {
return false;
}
}
break;
case MOZ_WM_REACTIVATE:
// The previous active window should take back focus.
if (::IsWindow(reinterpret_cast<HWND>(aLParam))) {
::SetForegroundWindow(reinterpret_cast<HWND>(aLParam));
}
return true;
case WM_NCACTIVATE:
if (!aWParam && !sSendingNCACTIVATE &&
NeedsToHandleNCActivateDelayed(aWnd)) {
// Don't just consume WM_NCACTIVATE. It doesn't handle only the
// nonclient area state change.
::DefWindowProcW(aWnd, aMessage, TRUE, aLParam);
// Accept the deactivating because it's necessary to receive following
// WM_ACTIVATE.
*aResult = TRUE;
sPendingNCACTIVATE = true;
return true;
}
return false;
case WM_MOUSEACTIVATE:
if (!EventIsInsideWindow(popupWindow) &&
GetPopupsToRollup(rollupListener, &popupsToRollup)) {
// WM_MOUSEACTIVATE may be caused by moving the mouse (e.g., X-mouse
// of TweakUI is enabled. Then, check if the popup should be rolled up
// with rollup listener. If not, just consume the message.
if (HIWORD(aLParam) == WM_MOUSEMOVE &&
!rollupListener->ShouldRollupOnMouseActivate()) {
return true;
}
// Otherwise, it should be handled by wndproc.
return false;
}
// 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.
return true;
case WM_KILLFOCUS:
// If focus moves to other window created in different process/thread,
// e.g., a plugin window, popups should be rolled up.
if (IsDifferentThreadWindow(reinterpret_cast<HWND>(aWParam))) {
break;
}
return false;
case WM_MOVING:
case WM_SIZING:
case WM_MENUSELECT:
break;
default:
return false;
}
// Only need to deal with the last rollup for left mouse down events.
NS_ASSERTION(!mLastRollup, "mLastRollup is null");
bool consumeRollupEvent;
if (nativeMessage == WM_LBUTTONDOWN) {
POINT pt;
pt.x = GET_X_LPARAM(aLParam);
pt.y = GET_Y_LPARAM(aLParam);
::ClientToScreen(aWnd, &pt);
nsIntPoint pos(pt.x, pt.y);
consumeRollupEvent =
rollupListener->Rollup(popupsToRollup, &pos, &mLastRollup);
NS_IF_ADDREF(mLastRollup);
} else {
consumeRollupEvent =
rollupListener->Rollup(popupsToRollup, nullptr, nullptr);
}
// Tell hook to stop processing messages
sProcessHook = false;
sRollupMsgId = 0;
sRollupMsgWnd = nullptr;
// If we are NOT supposed to be consuming events, let it go through
if (consumeRollupEvent && nativeMessage != WM_RBUTTONDOWN) {
*aResult = MA_ACTIVATE;
return true;
}
return false;
}
/**************************************************************
**************************************************************
**
** BLOCK: Misc. utility methods and functions.
**
** General use.
**
**************************************************************
**************************************************************/
// 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);
}
}
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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