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gecko-dev/widget/windows/winrt/MetroWidget.cpp
Ryan VanderMeulen afdc7727d2 Merge fx-team to m-c.
2013-11-19 13:44:45 -05:00

1608 lines
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "LayerManagerD3D10.h"
#include "MetroWidget.h"
#include "MetroApp.h"
#include "mozilla/Preferences.h"
#include "nsToolkit.h"
#include "KeyboardLayout.h"
#include "MetroUtils.h"
#include "WinUtils.h"
#include "nsToolkitCompsCID.h"
#include "nsIAppStartup.h"
#include "../resource.h"
#include "nsIWidgetListener.h"
#include "nsIPresShell.h"
#include "nsPrintfCString.h"
#include "nsWindowDefs.h"
#include "FrameworkView.h"
#include "nsTextStore.h"
#include "Layers.h"
#include "ClientLayerManager.h"
#include "BasicLayers.h"
#include "FrameMetrics.h"
#include "Windows.Graphics.Display.h"
#include "nsNativeDragTarget.h"
#ifdef MOZ_CRASHREPORTER
#include "nsExceptionHandler.h"
#endif
#include "UIABridgePrivate.h"
#include "WinMouseScrollHandler.h"
#include "InputData.h"
#include "mozilla/TextEvents.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/MiscEvents.h"
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
using namespace mozilla;
using namespace mozilla::widget;
using namespace mozilla::layers;
using namespace mozilla::widget::winrt;
using namespace ABI::Windows::ApplicationModel;
using namespace ABI::Windows::ApplicationModel::Core;
using namespace ABI::Windows::ApplicationModel::Activation;
using namespace ABI::Windows::UI::Input;
using namespace ABI::Windows::Devices::Input;
using namespace ABI::Windows::UI::Core;
using namespace ABI::Windows::System;
using namespace ABI::Windows::Foundation;
using namespace ABI::Windows::Graphics::Display;
#ifdef PR_LOGGING
extern PRLogModuleInfo* gWindowsLog;
#endif
static uint32_t gInstanceCount = 0;
const PRUnichar* kMetroSubclassThisProp = L"MetroSubclassThisProp";
HWND MetroWidget::sICoreHwnd = nullptr;
namespace mozilla {
namespace widget {
UINT sDefaultBrowserMsgId = RegisterWindowMessageW(L"DefaultBrowserClosing");
} }
// WM_GETOBJECT id pulled from uia headers
#define UiaRootObjectId -25
namespace mozilla {
namespace widget {
namespace winrt {
extern ComPtr<IUIABridge> gProviderRoot;
} } }
namespace {
void SendInputs(uint32_t aModifiers, INPUT* aExtraInputs, uint32_t aExtraInputsLen)
{
// keySequence holds the virtual key values of each of the keys we intend
// to press
nsAutoTArray<KeyPair,32> keySequence;
for (uint32_t i = 0; i < ArrayLength(sModifierKeyMap); ++i) {
const uint32_t* map = sModifierKeyMap[i];
if (aModifiers & map[0]) {
keySequence.AppendElement(KeyPair(map[1], map[2]));
}
}
uint32_t const len = keySequence.Length() * 2 + aExtraInputsLen;
// The `inputs` array is a sequence of input events that will happen
// serially. We set the array up so that each modifier key is pressed
// down, then the additional input events happen,
// then each modifier key is released in reverse order of when
// it was pressed down. We pass this array to `SendInput`.
//
// inputs[0]: modifier key (e.g. shift, ctrl, etc) down
// ... ...
// inputs[keySequence.Length()-1]: modifier key (e.g. shift, ctrl, etc) down
// inputs[keySequence.Length()]: aExtraInputs[0]
// inputs[keySequence.Length()+1]: aExtraInputs[1]
// ... ...
// inputs[keySequence.Length() + aExtraInputsLen - 1]: aExtraInputs[aExtraInputsLen - 1]
// inputs[keySequence.Length() + aExtraInputsLen]: modifier key (e.g. shift, ctrl, etc) up
// ... ...
// inputs[len-1]: modifier key (e.g. shift, ctrl, etc) up
INPUT* inputs = new INPUT[len];
memset(inputs, 0, len * sizeof(INPUT));
for (uint32_t i = 0; i < keySequence.Length(); ++i) {
inputs[i].type = inputs[len-i-1].type = INPUT_KEYBOARD;
inputs[i].ki.wVk = inputs[len-i-1].ki.wVk = keySequence[i].mSpecific
? keySequence[i].mSpecific
: keySequence[i].mGeneral;
inputs[len-i-1].ki.dwFlags |= KEYEVENTF_KEYUP;
}
for (uint32_t i = 0; i < aExtraInputsLen; i++) {
inputs[keySequence.Length()+i] = aExtraInputs[i];
}
WinUtils::Log(" Sending inputs");
for (uint32_t i = 0; i < len; i++) {
if (inputs[i].type == INPUT_KEYBOARD) {
WinUtils::Log(" Key press: 0x%x %s",
inputs[i].ki.wVk,
inputs[i].ki.dwFlags & KEYEVENTF_KEYUP
? "UP"
: "DOWN");
} else if(inputs[i].type == INPUT_MOUSE) {
WinUtils::Log(" Mouse input: 0x%x 0x%x",
inputs[i].mi.dwFlags,
inputs[i].mi.mouseData);
} else {
WinUtils::Log(" Unknown input type!");
}
}
::SendInput(len, inputs, sizeof(INPUT));
delete[] inputs;
// The inputs have been sent, and the WM_* messages they generate are
// waiting to be processed by our event loop. Now we manually pump
// those messages so that, upon our return, all the inputs have been
// processed.
WinUtils::Log(" Inputs sent. Waiting for input messages to clear");
MSG msg;
while (WinUtils::PeekMessage(&msg, nullptr, 0, 0, PM_REMOVE)) {
if (nsTextStore::ProcessRawKeyMessage(msg)) {
continue; // the message is consumed by TSF
}
::TranslateMessage(&msg);
::DispatchMessage(&msg);
WinUtils::Log(" Dispatched 0x%x 0x%x 0x%x", msg.message, msg.wParam, msg.lParam);
}
WinUtils::Log(" No more input messages");
}
}
NS_IMPL_ISUPPORTS_INHERITED0(MetroWidget, nsBaseWidget)
MetroWidget::MetroWidget() :
mTransparencyMode(eTransparencyOpaque),
mWnd(nullptr),
mMetroWndProc(nullptr),
mTempBasicLayerInUse(false),
mRootLayerTreeId(),
nsWindowBase()
{
// Global initialization
if (!gInstanceCount) {
UserActivity();
nsTextStore::Initialize();
MouseScrollHandler::Initialize();
KeyboardLayout::GetInstance()->OnLayoutChange(::GetKeyboardLayout(0));
} // !gInstanceCount
gInstanceCount++;
}
MetroWidget::~MetroWidget()
{
LogThis();
gInstanceCount--;
// Global shutdown
if (!gInstanceCount) {
APZController::sAPZC = nullptr;
nsTextStore::Terminate();
} // !gInstanceCount
}
static bool gTopLevelAssigned = false;
NS_IMETHODIMP
MetroWidget::Create(nsIWidget *aParent,
nsNativeWidget aNativeParent,
const nsIntRect &aRect,
nsDeviceContext *aContext,
nsWidgetInitData *aInitData)
{
LogFunction();
nsWidgetInitData defaultInitData;
if (!aInitData)
aInitData = &defaultInitData;
mWindowType = aInitData->mWindowType;
// Ensure that the toolkit is created.
nsToolkit::GetToolkit();
BaseCreate(aParent, aRect, aContext, aInitData);
if (mWindowType != eWindowType_toplevel) {
switch(mWindowType) {
case eWindowType_dialog:
WinUtils::Log("eWindowType_dialog window requested, returning failure.");
break;
case eWindowType_child:
WinUtils::Log("eWindowType_child window requested, returning failure.");
break;
case eWindowType_popup:
WinUtils::Log("eWindowType_popup window requested, returning failure.");
break;
case eWindowType_plugin:
WinUtils::Log("eWindowType_plugin window requested, returning failure.");
break;
// we should support toolkit's eWindowType_invisible at some point.
case eWindowType_invisible:
WinUtils::Log("eWindowType_invisible window requested, this doesn't actually exist!");
return NS_OK;
}
NS_WARNING("Invalid window type requested.");
return NS_ERROR_FAILURE;
}
if (gTopLevelAssigned) {
// Need to accept so that the mochitest-chrome test harness window
// can be created.
NS_WARNING("New eWindowType_toplevel window requested after FrameworkView widget created.");
NS_WARNING("Widget created but the physical window does not exist! Fix me!");
return NS_OK;
}
// the main widget gets created first
gTopLevelAssigned = true;
MetroApp::SetBaseWidget(this);
WinUtils::SetNSWindowBasePtr(mWnd, this);
if (mWidgetListener) {
mWidgetListener->WindowActivated();
}
return NS_OK;
}
void
MetroWidget::SetView(FrameworkView* aView)
{
mView = aView;
// If we've already set this up, it points to a useless
// layer manager, so reset it.
mLayerManager = nullptr;
}
NS_IMETHODIMP
MetroWidget::Destroy()
{
if (mOnDestroyCalled)
return NS_OK;
WinUtils::Log("[%X] %s mWnd=%X type=%d", this, __FUNCTION__, mWnd, mWindowType);
mOnDestroyCalled = true;
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
if (ShouldUseAPZC()) {
nsresult rv;
nsCOMPtr<nsIObserverService> observerService = do_GetService("@mozilla.org/observer-service;1", &rv);
if (NS_SUCCEEDED(rv)) {
observerService->RemoveObserver(this, "apzc-scroll-offset-changed");
observerService->RemoveObserver(this, "Metro:ZoomToRect");
}
}
RemoveSubclass();
NotifyWindowDestroyed();
// Prevent the widget from sending additional events.
mWidgetListener = nullptr;
mAttachedWidgetListener = nullptr;
// Release references to children, device context, toolkit, and app shell.
nsBaseWidget::Destroy();
nsBaseWidget::OnDestroy();
WinUtils::SetNSWindowBasePtr(mWnd, nullptr);
if (mLayerManager) {
mLayerManager->Destroy();
}
mLayerManager = nullptr;
mView = nullptr;
mIdleService = nullptr;
mWnd = nullptr;
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::SetParent(nsIWidget *aNewParent)
{
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::Show(bool bState)
{
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::IsVisible(bool & aState)
{
aState = mView->IsVisible();
return NS_OK;
}
bool
MetroWidget::IsVisible() const
{
if (!mView)
return false;
return mView->IsVisible();
}
NS_IMETHODIMP
MetroWidget::EnableDragDrop(bool aEnable) {
if (aEnable) {
if (nullptr == mNativeDragTarget) {
mNativeDragTarget = new nsNativeDragTarget(this);
if (!mNativeDragTarget) {
return NS_ERROR_FAILURE;
}
}
HRESULT hr = ::RegisterDragDrop(mWnd, static_cast<LPDROPTARGET>(mNativeDragTarget));
return SUCCEEDED(hr) ? NS_OK : NS_ERROR_FAILURE;
} else {
if (nullptr == mNativeDragTarget) {
return NS_OK;
}
HRESULT hr = ::RevokeDragDrop(mWnd);
return SUCCEEDED(hr) ? NS_OK : NS_ERROR_FAILURE;
}
}
NS_IMETHODIMP
MetroWidget::IsEnabled(bool *aState)
{
*aState = mView->IsEnabled();
return NS_OK;
}
bool
MetroWidget::IsEnabled() const
{
if (!mView)
return false;
return mView->IsEnabled();
}
NS_IMETHODIMP
MetroWidget::Enable(bool bState)
{
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::GetBounds(nsIntRect &aRect)
{
if (mView) {
mView->GetBounds(aRect);
} else {
nsIntRect rect(0,0,0,0);
aRect = rect;
}
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::GetScreenBounds(nsIntRect &aRect)
{
if (mView) {
mView->GetBounds(aRect);
} else {
nsIntRect rect(0,0,0,0);
aRect = rect;
}
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::GetClientBounds(nsIntRect &aRect)
{
if (mView) {
mView->GetBounds(aRect);
} else {
nsIntRect rect(0,0,0,0);
aRect = rect;
}
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::SetCursor(nsCursor aCursor)
{
if (!mView)
return NS_ERROR_FAILURE;
switch (aCursor) {
case eCursor_select:
mView->SetCursor(CoreCursorType::CoreCursorType_IBeam);
break;
case eCursor_wait:
mView->SetCursor(CoreCursorType::CoreCursorType_Wait);
break;
case eCursor_hyperlink:
mView->SetCursor(CoreCursorType::CoreCursorType_Hand);
break;
case eCursor_standard:
mView->SetCursor(CoreCursorType::CoreCursorType_Arrow);
break;
case eCursor_n_resize:
case eCursor_s_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeNorthSouth);
break;
case eCursor_w_resize:
case eCursor_e_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeWestEast);
break;
case eCursor_nw_resize:
case eCursor_se_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeNorthwestSoutheast);
break;
case eCursor_ne_resize:
case eCursor_sw_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeNortheastSouthwest);
break;
case eCursor_crosshair:
mView->SetCursor(CoreCursorType::CoreCursorType_Cross);
break;
case eCursor_move:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeAll);
break;
case eCursor_help:
mView->SetCursor(CoreCursorType::CoreCursorType_Help);
break;
// CSS3 custom cursors
case eCursor_copy:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_COPY);
break;
case eCursor_alias:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_ALIAS);
break;
case eCursor_cell:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_CELL);
break;
case eCursor_grab:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_GRAB);
break;
case eCursor_grabbing:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_GRABBING);
break;
case eCursor_spinning:
mView->SetCursor(CoreCursorType::CoreCursorType_Wait);
break;
case eCursor_context_menu:
mView->SetCursor(CoreCursorType::CoreCursorType_Arrow);
break;
case eCursor_zoom_in:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_ZOOMIN);
break;
case eCursor_zoom_out:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_ZOOMOUT);
break;
case eCursor_not_allowed:
case eCursor_no_drop:
mView->SetCursor(CoreCursorType::CoreCursorType_UniversalNo);
break;
case eCursor_col_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_COLRESIZE);
break;
case eCursor_row_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_ROWRESIZE);
break;
case eCursor_vertical_text:
mView->SetCursor(CoreCursorType::CoreCursorType_Custom, IDC_VERTICALTEXT);
break;
case eCursor_all_scroll:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeAll);
break;
case eCursor_nesw_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeNortheastSouthwest);
break;
case eCursor_nwse_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeNorthwestSoutheast);
break;
case eCursor_ns_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeNorthSouth);
break;
case eCursor_ew_resize:
mView->SetCursor(CoreCursorType::CoreCursorType_SizeWestEast);
break;
case eCursor_none:
mView->ClearCursor();
break;
default:
NS_WARNING("Invalid cursor type");
break;
}
return NS_OK;
}
nsresult
MetroWidget::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
MetroWidget::SynthesizeNativeMouseEvent(nsIntPoint aPoint,
uint32_t aNativeMessage,
uint32_t aModifierFlags)
{
WinUtils::Log("ENTERED SynthesizeNativeMouseEvent");
INPUT inputs[2];
memset(inputs, 0, 2*sizeof(INPUT));
inputs[0].type = inputs[1].type = INPUT_MOUSE;
inputs[0].mi.dwFlags = MOUSEEVENTF_MOVE | MOUSEEVENTF_ABSOLUTE;
// Inexplicably, the x and y coordinates that we want to move the mouse to
// are specified as values in the range (0, 65535). (0,0) represents the
// top left of the primary monitor and (65535, 65535) represents the
// bottom right of the primary monitor.
inputs[0].mi.dx = (aPoint.x * 65535) / ::GetSystemMetrics(SM_CXSCREEN);
inputs[0].mi.dy = (aPoint.y * 65535) / ::GetSystemMetrics(SM_CYSCREEN);
inputs[1].mi.dwFlags = aNativeMessage;
SendInputs(aModifierFlags, inputs, 2);
WinUtils::Log("Exiting SynthesizeNativeMouseEvent");
return NS_OK;
}
nsresult
MetroWidget::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);
}
static void
CloseGesture()
{
LogFunction();
nsCOMPtr<nsIAppStartup> appStartup =
do_GetService(NS_APPSTARTUP_CONTRACTID);
if (appStartup) {
appStartup->Quit(nsIAppStartup::eForceQuit);
}
}
// Async event sending for mouse and keyboard input.
// defined in nsWindowBase, called from shared module WinMouseScrollHandler.
bool
MetroWidget::DispatchScrollEvent(mozilla::WidgetGUIEvent* aEvent)
{
WidgetGUIEvent* newEvent = nullptr;
switch(aEvent->eventStructType) {
case NS_WHEEL_EVENT:
{
WidgetWheelEvent* oldEvent = aEvent->AsWheelEvent();
WidgetWheelEvent* wheelEvent =
new WidgetWheelEvent(oldEvent->mFlags.mIsTrusted, oldEvent->message, oldEvent->widget);
wheelEvent->AssignWheelEventData(*oldEvent, true);
newEvent = static_cast<WidgetGUIEvent*>(wheelEvent);
}
break;
case NS_CONTENT_COMMAND_EVENT:
{
WidgetContentCommandEvent* oldEvent = aEvent->AsContentCommandEvent();
WidgetContentCommandEvent* cmdEvent =
new WidgetContentCommandEvent(oldEvent->mFlags.mIsTrusted, oldEvent->message, oldEvent->widget);
cmdEvent->AssignContentCommandEventData(*oldEvent, true);
newEvent = static_cast<WidgetGUIEvent*>(cmdEvent);
}
break;
default:
MOZ_CRASH("unknown event in DispatchScrollEvent");
break;
}
mEventQueue.Push(newEvent);
nsCOMPtr<nsIRunnable> runnable =
NS_NewRunnableMethod(this, &MetroWidget::DeliverNextScrollEvent);
NS_DispatchToCurrentThread(runnable);
return false;
}
void
MetroWidget::DeliverNextScrollEvent()
{
WidgetGUIEvent* event =
static_cast<WidgetInputEvent*>(mEventQueue.PopFront());
DispatchWindowEvent(event);
delete event;
}
// defined in nsWindowBase, called from shared module KeyboardLayout.
bool
MetroWidget::DispatchKeyboardEvent(WidgetGUIEvent* aEvent)
{
MOZ_ASSERT(aEvent);
WidgetKeyboardEvent* oldKeyEvent = aEvent->AsKeyboardEvent();
WidgetKeyboardEvent* keyEvent =
new WidgetKeyboardEvent(oldKeyEvent->mFlags.mIsTrusted,
oldKeyEvent->message, oldKeyEvent->widget);
// XXX note this leaves pluginEvent null, which is fine for now.
keyEvent->AssignKeyEventData(*oldKeyEvent, true);
mKeyEventQueue.Push(keyEvent);
nsCOMPtr<nsIRunnable> runnable =
NS_NewRunnableMethod(this, &MetroWidget::DeliverNextKeyboardEvent);
NS_DispatchToCurrentThread(runnable);
return false;
}
// Used in conjunction with mKeyEventQueue to find a keypress event
// that should not be delivered due to the return result of the
// preceeding keydown.
class KeyQueryIdAndCancel : public nsDequeFunctor {
public:
KeyQueryIdAndCancel(uint32_t aIdToCancel) :
mId(aIdToCancel) {
}
virtual void* operator() (void* aObject) {
WidgetKeyboardEvent* event = static_cast<WidgetKeyboardEvent*>(aObject);
if (event->mUniqueId == mId) {
event->mFlags.mPropagationStopped = true;
}
return nullptr;
}
protected:
uint32_t mId;
};
void
MetroWidget::DeliverNextKeyboardEvent()
{
WidgetKeyboardEvent* event =
static_cast<WidgetKeyboardEvent*>(mKeyEventQueue.PopFront());
if (event->mFlags.mPropagationStopped) {
// This can happen if a keypress was previously cancelled.
delete event;
return;
}
if (DispatchWindowEvent(event) && event->message == NS_KEY_DOWN) {
// keydown events may be followed by multiple keypress events which
// shouldn't be sent if preventDefault is called on keydown.
KeyQueryIdAndCancel query(event->mUniqueId);
mKeyEventQueue.ForEach(query);
}
delete event;
}
// static
LRESULT CALLBACK
MetroWidget::StaticWindowProcedure(HWND aWnd, UINT aMsg, WPARAM aWParam, LPARAM aLParam)
{
MetroWidget* self = reinterpret_cast<MetroWidget*>(
GetProp(aWnd, kMetroSubclassThisProp));
if (!self) {
NS_NOTREACHED("Missing 'this' prop on subclassed metro window, this is bad.");
return 0;
}
return self->WindowProcedure(aWnd, aMsg, aWParam, aLParam);
}
LRESULT
MetroWidget::WindowProcedure(HWND aWnd, UINT aMsg, WPARAM aWParam, LPARAM aLParam)
{
if(sDefaultBrowserMsgId == aMsg) {
CloseGesture();
}
// Indicates if we should hand messages to the default windows
// procedure for processing.
bool processDefault = true;
// The result returned if we do not do default processing.
LRESULT processResult = 0;
MSGResult msgResult(&processResult);
MouseScrollHandler::ProcessMessage(this, aMsg, aWParam, aLParam, msgResult);
if (msgResult.mConsumed) {
return processResult;
}
switch (aMsg) {
case WM_PAINT:
{
HRGN rgn = CreateRectRgn(0, 0, 0, 0);
GetUpdateRgn(mWnd, rgn, false);
nsIntRegion region = WinUtils::ConvertHRGNToRegion(rgn);
DeleteObject(rgn);
if (region.IsEmpty())
break;
Paint(region);
break;
}
case WM_POWERBROADCAST:
{
switch (aWParam)
{
case PBT_APMSUSPEND:
MetroApp::PostSleepWakeNotification(true);
break;
case PBT_APMRESUMEAUTOMATIC:
case PBT_APMRESUMECRITICAL:
case PBT_APMRESUMESUSPEND:
MetroApp::PostSleepWakeNotification(false);
break;
}
break;
}
// Keyboard handling is passed to KeyboardLayout, which delivers gecko events
// via DispatchKeyboardEvent.
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
{
MSG msg = WinUtils::InitMSG(aMsg, aWParam, aLParam, aWnd);
// 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, msg);
if (nsTextStore::IsComposingOn(this)) {
break;
}
ModifierKeyState modKeyState;
NativeKey nativeKey(this, msg, modKeyState);
processDefault = !nativeKey.HandleKeyDownMessage();
// HandleKeyDownMessage cleaned up the redirected message information
// itself, so, we should do nothing.
redirectedMsgFlusher.Cancel();
break;
}
case WM_KEYUP:
case WM_SYSKEYUP:
{
if (nsTextStore::IsComposingOn(this)) {
break;
}
MSG msg = WinUtils::InitMSG(aMsg, aWParam, aLParam, aWnd);
ModifierKeyState modKeyState;
NativeKey nativeKey(this, msg, modKeyState);
processDefault = !nativeKey.HandleKeyUpMessage();
break;
}
case WM_CHAR:
case WM_SYSCHAR:
{
if (nsTextStore::IsComposingOn(this)) {
nsTextStore::CommitComposition(false);
}
MSG msg = WinUtils::InitMSG(aMsg, aWParam, aLParam, aWnd);
ModifierKeyState modKeyState;
NativeKey nativeKey(this, msg, modKeyState);
processDefault = !nativeKey.HandleCharMessage(msg);
break;
}
case WM_INPUTLANGCHANGE:
{
KeyboardLayout::GetInstance()->
OnLayoutChange(reinterpret_cast<HKL>(aLParam));
processResult = 1;
break;
}
case WM_GETOBJECT:
{
DWORD dwObjId = (LPARAM)(DWORD) aLParam;
// Passing this to CallWindowProc can result in a failure due to a timing issue
// in winrt core window server code, so we call it directly here. Also, it's not
// clear Windows::UI::Core::WindowServer::OnAutomationProviderRequestedEvent is
// compatible with metro enabled desktop browsers, it makes an initial call to
// UiaReturnRawElementProvider passing the return result from FrameworkView
// OnAutomationProviderRequested as the hwnd (me scratches head) which results in
// GetLastError always being set to invalid handle (6) after CallWindowProc returns.
if (dwObjId == UiaRootObjectId && gProviderRoot) {
ComPtr<IRawElementProviderSimple> simple;
gProviderRoot.As(&simple);
if (simple) {
LRESULT res = UiaReturnRawElementProvider(aWnd, aWParam, aLParam, simple.Get());
if (res) {
return res;
}
NS_ASSERTION(res, "UiaReturnRawElementProvider failed!");
WinUtils::Log("UiaReturnRawElementProvider failed! GetLastError=%X", GetLastError());
}
}
break;
}
default:
{
if (aWParam == WM_USER_TSF_TEXTCHANGE) {
nsTextStore::OnTextChangeMsg();
}
break;
}
}
if (processDefault) {
return CallWindowProc(mMetroWndProc, aWnd, aMsg, aWParam,
aLParam);
}
return processResult;
}
static BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
WCHAR className[56];
if (GetClassNameW(hwnd, className, sizeof(className)/sizeof(WCHAR)) &&
!wcscmp(L"Windows.UI.Core.CoreWindow", className)) {
DWORD processID = 0;
GetWindowThreadProcessId(hwnd, &processID);
if (processID && processID == GetCurrentProcessId()) {
*((HWND*)lParam) = hwnd;
return FALSE;
}
}
return TRUE;
}
void
MetroWidget::FindMetroWindow()
{
LogFunction();
if (mWnd)
return;
EnumWindows(EnumWindowsProc, (LPARAM)&mWnd);
NS_ASSERTION(mWnd, "Couldn't find our metro CoreWindow, this is bad.");
// subclass it
SetSubclass();
sICoreHwnd = mWnd;
return;
}
void
MetroWidget::SetSubclass()
{
if (!mWnd) {
NS_NOTREACHED("SetSubclass called without a valid hwnd.");
return;
}
WNDPROC wndProc = reinterpret_cast<WNDPROC>(
GetWindowLongPtr(mWnd, GWLP_WNDPROC));
if (wndProc != StaticWindowProcedure) {
if (!SetPropW(mWnd, kMetroSubclassThisProp, this)) {
NS_NOTREACHED("SetProp failed, can't continue.");
return;
}
mMetroWndProc =
reinterpret_cast<WNDPROC>(
SetWindowLongPtr(mWnd, GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(StaticWindowProcedure)));
NS_ASSERTION(mMetroWndProc != StaticWindowProcedure, "WTF?");
}
}
void
MetroWidget::RemoveSubclass()
{
if (!mWnd)
return;
WNDPROC wndProc = reinterpret_cast<WNDPROC>(
GetWindowLongPtr(mWnd, GWLP_WNDPROC));
if (wndProc == StaticWindowProcedure) {
NS_ASSERTION(mMetroWndProc, "Should have old proc here.");
SetWindowLongPtr(mWnd, GWLP_WNDPROC,
reinterpret_cast<LONG_PTR>(mMetroWndProc));
mMetroWndProc = nullptr;
}
RemovePropW(mWnd, kMetroSubclassThisProp);
}
bool
MetroWidget::ShouldUseOffMainThreadCompositing()
{
// Either we're not initialized yet, or this is the toolkit widget
if (!mView) {
return false;
}
// toolkit or test widgets can't use omtc, they don't have ICoreWindow.
return (CompositorParent::CompositorLoop() && mWindowType == eWindowType_toplevel);
}
bool
MetroWidget::ShouldUseMainThreadD3D10Manager()
{
// Either we're not initialized yet, or this is the toolkit widget
if (!mView) {
return false;
}
return (!CompositorParent::CompositorLoop() && mWindowType == eWindowType_toplevel);
}
bool
MetroWidget::ShouldUseBasicManager()
{
// toolkit or test widgets fall back on empty shadow layers
return (mWindowType != eWindowType_toplevel);
}
bool
MetroWidget::ShouldUseAPZC()
{
const char* kPrefName = "layers.async-pan-zoom.enabled";
return ShouldUseOffMainThreadCompositing() &&
Preferences::GetBool(kPrefName, false);
}
void
MetroWidget::SetWidgetListener(nsIWidgetListener* aWidgetListener)
{
mWidgetListener = aWidgetListener;
if (mController) {
mController->SetWidgetListener(aWidgetListener);
}
}
CompositorParent* MetroWidget::NewCompositorParent(int aSurfaceWidth, int aSurfaceHeight)
{
CompositorParent *compositor = nsBaseWidget::NewCompositorParent(aSurfaceWidth, aSurfaceHeight);
if (ShouldUseAPZC()) {
mRootLayerTreeId = compositor->RootLayerTreeId();
mController = new APZController();
mController->SetWidgetListener(mWidgetListener);
CompositorParent::SetControllerForLayerTree(mRootLayerTreeId, mController);
APZController::sAPZC = CompositorParent::GetAPZCTreeManager(compositor->RootLayerTreeId());
APZController::sAPZC->SetDPI(GetDPI());
nsresult rv;
nsCOMPtr<nsIObserverService> observerService = do_GetService("@mozilla.org/observer-service;1", &rv);
if (NS_SUCCEEDED(rv)) {
observerService->AddObserver(this, "apzc-scroll-offset-changed", false);
observerService->AddObserver(this, "Metro:ZoomToRect", false);
}
}
return compositor;
}
void
MetroWidget::ApzContentConsumingTouch(const ScrollableLayerGuid& aGuid)
{
LogFunction();
if (!mController) {
return;
}
mController->ContentReceivedTouch(aGuid, true);
}
void
MetroWidget::ApzContentIgnoringTouch(const ScrollableLayerGuid& aGuid)
{
LogFunction();
if (!mController) {
return;
}
mController->ContentReceivedTouch(aGuid, false);
}
bool
MetroWidget::ApzHitTest(ScreenIntPoint& pt)
{
if (!mController) {
return false;
}
return mController->HitTestAPZC(pt);
}
void
MetroWidget::ApzTransformGeckoCoordinate(const ScreenIntPoint& aPoint,
LayoutDeviceIntPoint* aRefPointOut)
{
if (!mController) {
return;
}
mController->TransformCoordinateToGecko(aPoint, aRefPointOut);
}
nsEventStatus
MetroWidget::ApzReceiveInputEvent(WidgetInputEvent* aEvent,
ScrollableLayerGuid* aOutTargetGuid)
{
MOZ_ASSERT(aEvent);
if (!mController) {
return nsEventStatus_eIgnore;
}
return mController->ReceiveInputEvent(aEvent, aOutTargetGuid);
}
nsEventStatus
MetroWidget::ApzReceiveInputEvent(WidgetInputEvent* aInEvent,
ScrollableLayerGuid* aOutTargetGuid,
WidgetInputEvent* aOutEvent)
{
MOZ_ASSERT(aInEvent);
MOZ_ASSERT(aOutEvent);
if (!mController) {
return nsEventStatus_eIgnore;
}
return mController->ReceiveInputEvent(aInEvent,
aOutTargetGuid,
aOutEvent);
}
LayerManager*
MetroWidget::GetLayerManager(PLayerTransactionChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence,
bool* aAllowRetaining)
{
bool retaining = true;
// If we initialized earlier than the view, recreate the layer manager now
if (mLayerManager &&
mTempBasicLayerInUse &&
ShouldUseOffMainThreadCompositing()) {
mLayerManager = nullptr;
mTempBasicLayerInUse = false;
retaining = false;
}
// If the backend device has changed, create a new manager (pulled from nswindow)
if (mLayerManager) {
if (mLayerManager->GetBackendType() == LAYERS_D3D10) {
LayerManagerD3D10 *layerManagerD3D10 =
static_cast<LayerManagerD3D10*>(mLayerManager.get());
if (layerManagerD3D10->device() !=
gfxWindowsPlatform::GetPlatform()->GetD3D10Device()) {
MOZ_ASSERT(!mLayerManager->IsInTransaction());
mLayerManager->Destroy();
mLayerManager = nullptr;
retaining = false;
}
}
}
HRESULT hr = S_OK;
// Create a layer manager: try to use an async compositor first, if enabled.
// Otherwise fall back on the main thread d3d manager.
if (!mLayerManager) {
if (ShouldUseOffMainThreadCompositing()) {
NS_ASSERTION(aShadowManager == nullptr, "Async Compositor not supported with e10s");
CreateCompositor();
} else if (ShouldUseMainThreadD3D10Manager()) {
nsRefPtr<mozilla::layers::LayerManagerD3D10> layerManager =
new mozilla::layers::LayerManagerD3D10(this);
if (layerManager->Initialize(true, &hr)) {
mLayerManager = layerManager;
}
} else if (ShouldUseBasicManager()) {
mLayerManager = CreateBasicLayerManager();
}
// Either we're not ready to initialize yet due to a missing view pointer,
// or something has gone wrong.
if (!mLayerManager) {
if (!mView) {
NS_WARNING("Using temporary basic layer manager.");
mLayerManager = new BasicLayerManager(this);
mTempBasicLayerInUse = true;
} else {
#ifdef MOZ_CRASHREPORTER
if (FAILED(hr)) {
char errorBuf[10];
errorBuf[0] = '\0';
_snprintf_s(errorBuf, sizeof(errorBuf), _TRUNCATE, "%X", hr);
CrashReporter::
AnnotateCrashReport(NS_LITERAL_CSTRING("HRESULT"),
nsDependentCString(errorBuf));
}
#endif
NS_RUNTIMEABORT("Couldn't create layer manager");
}
}
}
if (aAllowRetaining) {
*aAllowRetaining = retaining;
}
return mLayerManager;
}
NS_IMETHODIMP
MetroWidget::Invalidate(bool aEraseBackground,
bool aUpdateNCArea,
bool aIncludeChildren)
{
nsIntRect rect;
if (mView) {
mView->GetBounds(rect);
}
Invalidate(rect);
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::Invalidate(const nsIntRect & aRect)
{
if (mWnd) {
RECT rect;
rect.left = aRect.x;
rect.top = aRect.y;
rect.right = aRect.x + aRect.width;
rect.bottom = aRect.y + aRect.height;
InvalidateRect(mWnd, &rect, FALSE);
}
return NS_OK;
}
nsTransparencyMode
MetroWidget::GetTransparencyMode()
{
return mTransparencyMode;
}
void
MetroWidget::SetTransparencyMode(nsTransparencyMode aMode)
{
mTransparencyMode = aMode;
}
nsIWidgetListener*
MetroWidget::GetPaintListener()
{
if (mOnDestroyCalled)
return nullptr;
return mAttachedWidgetListener ? mAttachedWidgetListener :
mWidgetListener;
}
void MetroWidget::Paint(const nsIntRegion& aInvalidRegion)
{
gfxWindowsPlatform::GetPlatform()->UpdateRenderMode();
nsIWidgetListener* listener = GetPaintListener();
if (!listener)
return;
listener->WillPaintWindow(this);
// Refresh since calls like WillPaintWindow can destroy the widget
listener = GetPaintListener();
if (!listener)
return;
listener->PaintWindow(this, aInvalidRegion);
listener = GetPaintListener();
if (!listener)
return;
listener->DidPaintWindow();
}
void MetroWidget::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);
}
}
// InitEvent assumes physical coordinates and is used by shared win32 code. Do
// not hand winrt event coordinates to this routine.
void
MetroWidget::InitEvent(WidgetGUIEvent& event, nsIntPoint* aPoint)
{
if (!aPoint) {
event.refPoint.x = event.refPoint.y = 0;
} else {
event.refPoint.x = aPoint->x;
event.refPoint.y = aPoint->y;
}
event.time = ::GetMessageTime();
}
bool
MetroWidget::DispatchWindowEvent(WidgetGUIEvent* aEvent)
{
MOZ_ASSERT(aEvent);
nsEventStatus status = nsEventStatus_eIgnore;
DispatchEvent(aEvent, status);
return (status == nsEventStatus_eConsumeNoDefault);
}
NS_IMETHODIMP
MetroWidget::DispatchEvent(WidgetGUIEvent* event, nsEventStatus & aStatus)
{
if (event->AsInputEvent()) {
UserActivity();
}
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;
}
#ifdef ACCESSIBILITY
mozilla::a11y::Accessible*
MetroWidget::GetAccessible()
{
// We want the ability to forcibly disable a11y on windows, because
// some non-a11y-related components attempt to bring it up. See bug
// 538530 for details; we have a pref here that allows it to be disabled
// for performance and testing resons.
//
// This pref is checked only once, and the browser needs a restart to
// pick up any changes.
static int accForceDisable = -1;
if (accForceDisable == -1) {
const char* kPrefName = "accessibility.win32.force_disabled";
if (Preferences::GetBool(kPrefName, false)) {
accForceDisable = 1;
} else {
accForceDisable = 0;
}
}
// If the pref was true, return null here, disabling a11y.
if (accForceDisable)
return nullptr;
return GetRootAccessible();
}
#endif
double MetroWidget::GetDefaultScaleInternal()
{
// Return the resolution scale factor reported by the metro environment.
// XXX TODO: also consider the desktop resolution setting, as IE appears to do?
ComPtr<IDisplayPropertiesStatics> dispProps;
if (SUCCEEDED(GetActivationFactory(HStringReference(RuntimeClass_Windows_Graphics_Display_DisplayProperties).Get(),
dispProps.GetAddressOf()))) {
ResolutionScale scale;
if (SUCCEEDED(dispProps->get_ResolutionScale(&scale))) {
return (double)scale / 100.0;
}
}
return 1.0;
}
LayoutDeviceIntPoint
MetroWidget::CSSIntPointToLayoutDeviceIntPoint(const CSSIntPoint &aCSSPoint)
{
CSSToLayoutDeviceScale scale = GetDefaultScale();
LayoutDeviceIntPoint devPx(int32_t(NS_round(scale.scale * aCSSPoint.x)),
int32_t(NS_round(scale.scale * aCSSPoint.y)));
return devPx;
}
float MetroWidget::GetDPI()
{
if (!mView) {
return 96.0;
}
return mView->GetDPI();
}
void MetroWidget::ChangedDPI()
{
if (mWidgetListener) {
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->BackingScaleFactorChanged();
}
}
}
NS_IMETHODIMP
MetroWidget::ConstrainPosition(bool aAllowSlop, int32_t *aX, int32_t *aY)
{
return NS_OK;
}
void
MetroWidget::SizeModeChanged()
{
if (mWidgetListener) {
mWidgetListener->SizeModeChanged(nsSizeMode_Normal);
}
}
void
MetroWidget::Activated(bool aActiveated)
{
if (mWidgetListener) {
aActiveated ?
mWidgetListener->WindowActivated() :
mWidgetListener->WindowDeactivated();
}
}
NS_IMETHODIMP
MetroWidget::Move(double aX, double aY)
{
if (mWidgetListener) {
mWidgetListener->WindowMoved(this, aX, aY);
}
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::Resize(double aWidth, double aHeight, bool aRepaint)
{
return Resize(0, 0, aWidth, aHeight, aRepaint);
}
NS_IMETHODIMP
MetroWidget::Resize(double aX, double aY, double aWidth, double aHeight, bool aRepaint)
{
WinUtils::Log("Resize: %f %f %f %f", aX, aY, aWidth, aHeight);
if (mAttachedWidgetListener) {
mAttachedWidgetListener->WindowResized(this, aWidth, aHeight);
}
if (mWidgetListener) {
mWidgetListener->WindowResized(this, aWidth, aHeight);
}
Invalidate();
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::SetFocus(bool aRaise)
{
return NS_OK;
}
nsresult
MetroWidget::ConfigureChildren(const nsTArray<Configuration>& aConfigurations)
{
return NS_OK;
}
void*
MetroWidget::GetNativeData(uint32_t aDataType)
{
switch(aDataType) {
case NS_NATIVE_WINDOW:
return mWnd;
case NS_NATIVE_ICOREWINDOW:
if (mView) {
return reinterpret_cast<IUnknown*>(mView->GetCoreWindow());
}
break;
case NS_NATIVE_TSF_THREAD_MGR:
case NS_NATIVE_TSF_CATEGORY_MGR:
case NS_NATIVE_TSF_DISPLAY_ATTR_MGR:
return nsTextStore::GetNativeData(aDataType);
}
return nullptr;
}
void
MetroWidget::FreeNativeData(void * data, uint32_t aDataType)
{
}
NS_IMETHODIMP
MetroWidget::SetTitle(const nsAString& aTitle)
{
return NS_OK;
}
nsIntPoint
MetroWidget::WidgetToScreenOffset()
{
return nsIntPoint(0,0);
}
NS_IMETHODIMP
MetroWidget::CaptureRollupEvents(nsIRollupListener * aListener,
bool aDoCapture)
{
return NS_OK;
}
NS_IMETHODIMP_(void)
MetroWidget::SetInputContext(const InputContext& aContext,
const InputContextAction& aAction)
{
mInputContext = aContext;
nsTextStore::SetInputContext(this, mInputContext, aAction);
bool enable = (mInputContext.mIMEState.mEnabled == IMEState::ENABLED ||
mInputContext.mIMEState.mEnabled == IMEState::PLUGIN);
if (enable &&
mInputContext.mIMEState.mOpen != IMEState::DONT_CHANGE_OPEN_STATE) {
bool open = (mInputContext.mIMEState.mOpen == IMEState::OPEN);
nsTextStore::SetIMEOpenState(open);
}
}
NS_IMETHODIMP_(nsIWidget::InputContext)
MetroWidget::GetInputContext()
{
return mInputContext;
}
NS_IMETHODIMP
MetroWidget::NotifyIME(NotificationToIME aNotification)
{
switch (aNotification) {
case REQUEST_TO_COMMIT_COMPOSITION:
nsTextStore::CommitComposition(false);
return NS_OK;
case REQUEST_TO_CANCEL_COMPOSITION:
nsTextStore::CommitComposition(true);
return NS_OK;
case NOTIFY_IME_OF_FOCUS:
return nsTextStore::OnFocusChange(true, this,
mInputContext.mIMEState.mEnabled);
case NOTIFY_IME_OF_BLUR:
return nsTextStore::OnFocusChange(false, this,
mInputContext.mIMEState.mEnabled);
case NOTIFY_IME_OF_SELECTION_CHANGE:
return nsTextStore::OnSelectionChange();
default:
return NS_ERROR_NOT_IMPLEMENTED;
}
}
NS_IMETHODIMP
MetroWidget::GetToggledKeyState(uint32_t aKeyCode, bool* aLEDState)
{
NS_ENSURE_ARG_POINTER(aLEDState);
*aLEDState = (::GetKeyState(aKeyCode) & 1) != 0;
return NS_OK;
}
NS_IMETHODIMP
MetroWidget::NotifyIMEOfTextChange(uint32_t aStart,
uint32_t aOldEnd,
uint32_t aNewEnd)
{
return nsTextStore::OnTextChange(aStart, aOldEnd, aNewEnd);
}
nsIMEUpdatePreference
MetroWidget::GetIMEUpdatePreference()
{
return nsTextStore::GetIMEUpdatePreference();
}
NS_IMETHODIMP
MetroWidget::ReparentNativeWidget(nsIWidget* aNewParent)
{
return NS_OK;
}
void
MetroWidget::SuppressBlurEvents(bool aSuppress)
{
}
bool
MetroWidget::BlurEventsSuppressed()
{
return false;
}
void
MetroWidget::PickerOpen()
{
}
void
MetroWidget::PickerClosed()
{
}
bool
MetroWidget::HasPendingInputEvent()
{
if (HIWORD(GetQueueStatus(QS_INPUT)))
return true;
return false;
}
NS_IMETHODIMP
MetroWidget::Observe(nsISupports *subject, const char *topic, const PRUnichar *data)
{
NS_ENSURE_ARG_POINTER(topic);
if (!strcmp(topic, "apzc-scroll-offset-changed")) {
uint64_t scrollId;
int32_t presShellId;
CSSIntPoint scrollOffset;
int matched = sscanf(NS_LossyConvertUTF16toASCII(data).get(),
"%llu %d (%d, %d)",
&scrollId,
&presShellId,
&scrollOffset.x,
&scrollOffset.y);
if (matched != 4) {
NS_WARNING("Malformed scroll-offset-changed message");
return NS_ERROR_UNEXPECTED;
}
if (!mController) {
return NS_ERROR_UNEXPECTED;
}
mController->UpdateScrollOffset(ScrollableLayerGuid(mRootLayerTreeId, presShellId, scrollId),
scrollOffset);
}
else if (!strcmp(topic, "Metro:ZoomToRect")) {
CSSRect rect = CSSRect();
uint64_t viewId = 0;
int32_t presShellId = 0;
int reScan = swscanf(data, L"%f,%f,%f,%f,%d,%llu",
&rect.x, &rect.y, &rect.width, &rect.height,
&presShellId, &viewId);
if(reScan != 6) {
NS_WARNING("Malformed Metro:ZoomToRect message");
}
ScrollableLayerGuid guid = ScrollableLayerGuid(mRootLayerTreeId, presShellId, viewId);
APZController::sAPZC->ZoomToRect(guid, rect);
}
else {
return NS_OK;
}
}
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