Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "mozilla/ArrayUtils.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/TextEventDispatcher.h"
#include "mozilla/TextEventDispatcherListener.h"
#include "mozilla/layers/CompositorBridgeChild.h"
#include "mozilla/layers/CompositorBridgeParent.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "nsBaseWidget.h"
#include "nsDeviceContext.h"
#include "nsCOMPtr.h"
#include "nsGfxCIID.h"
#include "nsWidgetsCID.h"
#include "nsServiceManagerUtils.h"
#include "nsIKeyEventInPluginCallback.h"
#include "nsIScreenManager.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsISimpleEnumerator.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIPresShell.h"
#include "nsIServiceManager.h"
#include "mozilla/Preferences.h"
#include "BasicLayers.h"
#include "ClientLayerManager.h"
#include "mozilla/layers/Compositor.h"
#include "nsIXULRuntime.h"
#include "nsIXULWindow.h"
#include "nsIBaseWindow.h"
#include "nsXULPopupManager.h"
#include "nsIWidgetListener.h"
#include "nsIGfxInfo.h"
#include "npapi.h"
#include "X11UndefineNone.h"
#include "base/thread.h"
#include "prdtoa.h"
#include "prenv.h"
#include "mozilla/Attributes.h"
#include "mozilla/Unused.h"
#include "nsContentUtils.h"
#include "gfxPrefs.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/MouseEvents.h"
#include "GLConsts.h"
#include "mozilla/Unused.h"
#include "mozilla/IMEStateManager.h"
#include "mozilla/VsyncDispatcher.h"
#include "mozilla/layers/IAPZCTreeManager.h"
#include "mozilla/layers/APZEventState.h"
#include "mozilla/layers/APZThreadUtils.h"
#include "mozilla/layers/ChromeProcessController.h"
#include "mozilla/layers/InputAPZContext.h"
#include "mozilla/layers/APZCCallbackHelper.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/TabParent.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/Move.h"
#include "mozilla/Services.h"
#include "mozilla/Sprintf.h"
#include "nsRefPtrHashtable.h"
#include "TouchEvents.h"
#include "WritingModes.h"
#include "InputData.h"
#include "FrameLayerBuilder.h"
#ifdef ACCESSIBILITY
#include "nsAccessibilityService.h"
#endif
#include "gfxConfig.h"
#include "mozilla/layers/CompositorSession.h"
#ifdef DEBUG
#include "nsIObserver.h"
static void debug_RegisterPrefCallbacks();
#endif
#ifdef NOISY_WIDGET_LEAKS
static int32_t gNumWidgets;
#endif
#ifdef XP_MACOSX
#include "nsCocoaFeatures.h"
#endif
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
static nsRefPtrHashtable<nsVoidPtrHashKey, nsIWidget>* sPluginWidgetList;
#endif
nsIRollupListener* nsBaseWidget::gRollupListener = nullptr;
using namespace mozilla::dom;
using namespace mozilla::layers;
using namespace mozilla::ipc;
using namespace mozilla::widget;
using namespace mozilla;
using base::Thread;
nsIContent* nsBaseWidget::mLastRollup = nullptr;
// Global user preference for disabling native theme. Used
// in NativeWindowTheme.
bool gDisableNativeTheme = false;
// Async pump timer during injected long touch taps
#define TOUCH_INJECT_PUMP_TIMER_MSEC 50
#define TOUCH_INJECT_LONG_TAP_DEFAULT_MSEC 1500
int32_t nsIWidget::sPointerIdCounter = 0;
// Some statics from nsIWidget.h
/*static*/ uint64_t AutoObserverNotifier::sObserverId = 0;
/*static*/ nsDataHashtable<nsUint64HashKey, nsCOMPtr<nsIObserver>> AutoObserverNotifier::sSavedObservers;
namespace mozilla {
namespace widget {
void
IMENotification::SelectionChangeDataBase::SetWritingMode(
const WritingMode& aWritingMode)
{
mWritingMode = aWritingMode.mWritingMode;
}
WritingMode
IMENotification::SelectionChangeDataBase::GetWritingMode() const
{
return WritingMode(mWritingMode);
}
} // namespace widget
} // namespace mozilla
nsAutoRollup::nsAutoRollup()
{
// remember if mLastRollup was null, and only clear it upon destruction
// if so. This prevents recursive usage of nsAutoRollup from clearing
// mLastRollup when it shouldn't.
wasClear = !nsBaseWidget::mLastRollup;
}
nsAutoRollup::~nsAutoRollup()
{
if (nsBaseWidget::mLastRollup && wasClear) {
NS_RELEASE(nsBaseWidget::mLastRollup);
}
}
NS_IMPL_ISUPPORTS(nsBaseWidget, nsIWidget, nsISupportsWeakReference)
//-------------------------------------------------------------------------
//
// nsBaseWidget constructor
//
//-------------------------------------------------------------------------
nsBaseWidget::nsBaseWidget()
: mWidgetListener(nullptr)
, mAttachedWidgetListener(nullptr)
, mPreviouslyAttachedWidgetListener(nullptr)
, mLayerManager(nullptr)
, mCompositorVsyncDispatcher(nullptr)
, mCursor(eCursor_standard)
, mBorderStyle(eBorderStyle_none)
, mBounds(0,0,0,0)
, mOriginalBounds(nullptr)
, mClipRectCount(0)
, mSizeMode(nsSizeMode_Normal)
, mPopupLevel(ePopupLevelTop)
, mPopupType(ePopupTypeAny)
, mCompositorWidgetDelegate(nullptr)
, mUpdateCursor(true)
, mUseAttachedEvents(false)
, mIMEHasFocus(false)
#if defined(XP_WIN) || defined(XP_MACOSX) || defined(MOZ_WIDGET_GTK)
, mAccessibilityInUseFlag(false)
#endif
{
#ifdef NOISY_WIDGET_LEAKS
gNumWidgets++;
printf("WIDGETS+ = %d\n", gNumWidgets);
#endif
#ifdef DEBUG
debug_RegisterPrefCallbacks();
#endif
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
if (!sPluginWidgetList) {
sPluginWidgetList = new nsRefPtrHashtable<nsVoidPtrHashKey, nsIWidget>();
}
#endif
mShutdownObserver = new WidgetShutdownObserver(this);
}
NS_IMPL_ISUPPORTS(WidgetShutdownObserver, nsIObserver)
WidgetShutdownObserver::WidgetShutdownObserver(nsBaseWidget* aWidget) :
mWidget(aWidget),
mRegistered(false)
{
Register();
}
WidgetShutdownObserver::~WidgetShutdownObserver()
{
// No need to call Unregister(), we can't be destroyed until nsBaseWidget
// gets torn down. The observer service and nsBaseWidget have a ref on us
// so nsBaseWidget has to call Unregister and then clear its ref.
}
NS_IMETHODIMP
WidgetShutdownObserver::Observe(nsISupports *aSubject,
const char *aTopic,
const char16_t *aData)
{
if (mWidget && !strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
RefPtr<nsBaseWidget> widget(mWidget);
widget->Shutdown();
}
return NS_OK;
}
void
WidgetShutdownObserver::Register()
{
if (!mRegistered) {
mRegistered = true;
nsContentUtils::RegisterShutdownObserver(this);
}
}
void
WidgetShutdownObserver::Unregister()
{
if (mRegistered) {
mWidget = nullptr;
nsContentUtils::UnregisterShutdownObserver(this);
mRegistered = false;
}
}
void
nsBaseWidget::Shutdown()
{
RevokeTransactionIdAllocator();
DestroyCompositor();
FreeShutdownObserver();
#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
if (sPluginWidgetList) {
delete sPluginWidgetList;
sPluginWidgetList = nullptr;
}
#endif
}
void nsBaseWidget::DestroyCompositor()
{
// We release this before releasing the compositor, since it may hold the
// last reference to our ClientLayerManager. ClientLayerManager's dtor can
// trigger a paint, creating a new compositor, and we don't want to re-use
// the old vsync dispatcher.
if (mCompositorVsyncDispatcher) {
mCompositorVsyncDispatcher->Shutdown();
mCompositorVsyncDispatcher = nullptr;
}
// The compositor shutdown sequence looks like this:
// 1. CompositorSession calls CompositorBridgeChild::Destroy.
// 2. CompositorBridgeChild synchronously sends WillClose.
// 3. CompositorBridgeParent releases some resources (such as the layer
// manager, compositor, and widget).
// 4. CompositorBridgeChild::Destroy returns.
// 5. Asynchronously, CompositorBridgeParent::ActorDestroy will fire on the
// compositor thread when the I/O thread closes the IPC channel.
// 6. Step 5 will schedule DeferredDestroy on the compositor thread, which
// releases the reference CompositorBridgeParent holds to itself.
//
// When CompositorSession::Shutdown returns, we assume the compositor is gone
// or will be gone very soon.
if (mCompositorSession) {
ReleaseContentController();
mAPZC = nullptr;
mCompositorWidgetDelegate = nullptr;
mCompositorBridgeChild = nullptr;
// XXX CompositorBridgeChild and CompositorBridgeParent might be re-created in
// ClientLayerManager destructor. See bug 1133426.
RefPtr<CompositorSession> session = mCompositorSession.forget();
session->Shutdown();
}
}
// This prevents the layer manager from starting a new transaction during
// shutdown.
void
nsBaseWidget::RevokeTransactionIdAllocator()
{
if (!mLayerManager) {
return;
}
ClientLayerManager* clm = mLayerManager->AsClientLayerManager();
if (!clm) {
return;
}
clm->SetTransactionIdAllocator(nullptr);
}
void nsBaseWidget::ReleaseContentController()
{
if (mRootContentController) {
mRootContentController->Destroy();
mRootContentController = nullptr;
}
}
void nsBaseWidget::DestroyLayerManager()
{
if (mLayerManager) {
mLayerManager->Destroy();
mLayerManager = nullptr;
}
DestroyCompositor();
}
void
nsBaseWidget::OnRenderingDeviceReset()
{
if (!mLayerManager || !mCompositorSession) {
return;
}
nsTArray<LayersBackend> backendHints;
gfxPlatform::GetPlatform()->GetCompositorBackends(ComputeShouldAccelerate(), backendHints);
// If the existing compositor does not use acceleration, and this widget
// should not be accelerated, then there's no point in resetting.
//
// Note that if this widget should be accelerated, but instead has a basic
// compositor, we still reset just in case we're now in the position to get
// accelerated layers again.
RefPtr<ClientLayerManager> clm = mLayerManager->AsClientLayerManager();
if (!ComputeShouldAccelerate() &&
clm->GetTextureFactoryIdentifier().mParentBackend != LayersBackend::LAYERS_BASIC)
{
return;
}
// Recreate the compositor.
TextureFactoryIdentifier identifier;
if (!mCompositorSession->Reset(backendHints, &identifier)) {
// No action was taken, so we don't have to do anything.
return;
}
// Invalidate all layers.
FrameLayerBuilder::InvalidateAllLayers(mLayerManager);
// Update the texture factory identifier.
clm->UpdateTextureFactoryIdentifier(identifier);
ImageBridgeChild::IdentifyCompositorTextureHost(identifier);
}
void
nsBaseWidget::FreeShutdownObserver()
{
if (mShutdownObserver) {
mShutdownObserver->Unregister();
}
mShutdownObserver = nullptr;
}
//-------------------------------------------------------------------------
//
// nsBaseWidget destructor
//
//-------------------------------------------------------------------------
nsBaseWidget::~nsBaseWidget()
{
IMEStateManager::WidgetDestroyed(this);
if (mLayerManager) {
if (BasicLayerManager* mgr = mLayerManager->AsBasicLayerManager()) {
mgr->ClearRetainerWidget();
}
}
FreeShutdownObserver();
RevokeTransactionIdAllocator();
DestroyLayerManager();
#ifdef NOISY_WIDGET_LEAKS
gNumWidgets--;
printf("WIDGETS- = %d\n", gNumWidgets);
#endif
delete mOriginalBounds;
}
//-------------------------------------------------------------------------
//
// Basic create.
//
//-------------------------------------------------------------------------
void nsBaseWidget::BaseCreate(nsIWidget* aParent,
nsWidgetInitData* aInitData)
{
static bool gDisableNativeThemeCached = false;
if (!gDisableNativeThemeCached) {
Preferences::AddBoolVarCache(&gDisableNativeTheme,
"mozilla.widget.disable-native-theme",
gDisableNativeTheme);
gDisableNativeThemeCached = true;
}
// keep a reference to the device context
if (nullptr != aInitData) {
mWindowType = aInitData->mWindowType;
mBorderStyle = aInitData->mBorderStyle;
mPopupLevel = aInitData->mPopupLevel;
mPopupType = aInitData->mPopupHint;
}
if (aParent) {
aParent->AddChild(this);
}
}
//-------------------------------------------------------------------------
//
// Accessor functions to get/set the client data
//
//-------------------------------------------------------------------------
nsIWidgetListener* nsBaseWidget::GetWidgetListener()
{
return mWidgetListener;
}
void nsBaseWidget::SetWidgetListener(nsIWidgetListener* aWidgetListener)
{
mWidgetListener = aWidgetListener;
}
already_AddRefed<nsIWidget>
nsBaseWidget::CreateChild(const LayoutDeviceIntRect& aRect,
nsWidgetInitData* aInitData,
bool aForceUseIWidgetParent)
{
nsIWidget* parent = this;
nsNativeWidget nativeParent = nullptr;
if (!aForceUseIWidgetParent) {
// Use only either parent or nativeParent, not both, to match
// existing code. Eventually Create() should be divested of its
// nativeWidget parameter.
nativeParent = parent ? parent->GetNativeData(NS_NATIVE_WIDGET) : nullptr;
parent = nativeParent ? nullptr : parent;
MOZ_ASSERT(!parent || !nativeParent, "messed up logic");
}
nsCOMPtr<nsIWidget> widget;
if (aInitData && aInitData->mWindowType == eWindowType_popup) {
widget = AllocateChildPopupWidget();
} else {
static NS_DEFINE_IID(kCChildCID, NS_CHILD_CID);
widget = do_CreateInstance(kCChildCID);
}
if (widget &&
NS_SUCCEEDED(widget->Create(parent, nativeParent, aRect, aInitData))) {
return widget.forget();
}
return nullptr;
}
// Attach a view to our widget which we'll send events to.
void
nsBaseWidget::AttachViewToTopLevel(bool aUseAttachedEvents)
{
NS_ASSERTION((mWindowType == eWindowType_toplevel ||
mWindowType == eWindowType_dialog ||
mWindowType == eWindowType_invisible ||
mWindowType == eWindowType_child),
"Can't attach to window of that type");
mUseAttachedEvents = aUseAttachedEvents;
}
nsIWidgetListener* nsBaseWidget::GetAttachedWidgetListener()
{
return mAttachedWidgetListener;
}
nsIWidgetListener* nsBaseWidget::GetPreviouslyAttachedWidgetListener()
{
return mPreviouslyAttachedWidgetListener;
}
void nsBaseWidget::SetPreviouslyAttachedWidgetListener(nsIWidgetListener* aListener)
{
mPreviouslyAttachedWidgetListener = aListener;
}
void nsBaseWidget::SetAttachedWidgetListener(nsIWidgetListener* aListener)
{
mAttachedWidgetListener = aListener;
}
//-------------------------------------------------------------------------
//
// Close this nsBaseWidget
//
//-------------------------------------------------------------------------
void nsBaseWidget::Destroy()
{
// Just in case our parent is the only ref to us
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
// disconnect from the parent
nsIWidget *parent = GetParent();
if (parent) {
parent->RemoveChild(this);
}
#if defined(XP_WIN)
// Allow our scroll capture container to be cleaned up, if we have one.
mScrollCaptureContainer = nullptr;
#endif
}
//-------------------------------------------------------------------------
//
// Set this nsBaseWidget's parent
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::SetParent(nsIWidget* aNewParent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget parent
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetParent(void)
{
return nullptr;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget top level widget
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetTopLevelWidget()
{
nsIWidget *topLevelWidget = nullptr, *widget = this;
while (widget) {
topLevelWidget = widget;
widget = widget->GetParent();
}
return topLevelWidget;
}
//-------------------------------------------------------------------------
//
// Get this nsBaseWidget's top (non-sheet) parent (if it's a sheet)
//
//-------------------------------------------------------------------------
nsIWidget* nsBaseWidget::GetSheetWindowParent(void)
{
return nullptr;
}
float nsBaseWidget::GetDPI()
{
return 96.0f;
}
CSSToLayoutDeviceScale nsIWidget::GetDefaultScale()
{
double devPixelsPerCSSPixel = DefaultScaleOverride();
if (devPixelsPerCSSPixel <= 0.0) {
devPixelsPerCSSPixel = GetDefaultScaleInternal();
}
return CSSToLayoutDeviceScale(devPixelsPerCSSPixel);
}
/* static */
double nsIWidget::DefaultScaleOverride()
{
// The number of device pixels per CSS pixel. A value <= 0 means choose
// automatically based on the DPI. A positive value is used as-is. This effectively
// controls the size of a CSS "px".
double devPixelsPerCSSPixel = -1.0;
nsAdoptingCString prefString = Preferences::GetCString("layout.css.devPixelsPerPx");
if (!prefString.IsEmpty()) {
devPixelsPerCSSPixel = PR_strtod(prefString, nullptr);
}
return devPixelsPerCSSPixel;
}
//-------------------------------------------------------------------------
//
// Add a child to the list of children
//
//-------------------------------------------------------------------------
void nsBaseWidget::AddChild(nsIWidget* aChild)
{
MOZ_ASSERT(!aChild->GetNextSibling() && !aChild->GetPrevSibling(),
"aChild not properly removed from its old child list");
if (!mFirstChild) {
mFirstChild = mLastChild = aChild;
} else {
// append to the list
MOZ_ASSERT(mLastChild);
MOZ_ASSERT(!mLastChild->GetNextSibling());
mLastChild->SetNextSibling(aChild);
aChild->SetPrevSibling(mLastChild);
mLastChild = aChild;
}
}
//-------------------------------------------------------------------------
//
// Remove a child from the list of children
//
//-------------------------------------------------------------------------
void nsBaseWidget::RemoveChild(nsIWidget* aChild)
{
#ifdef DEBUG
#ifdef XP_MACOSX
// nsCocoaWindow doesn't implement GetParent, so in that case parent will be
// null and we'll just have to do without this assertion.
nsIWidget* parent = aChild->GetParent();
NS_ASSERTION(!parent || parent == this, "Not one of our kids!");
#else
MOZ_RELEASE_ASSERT(aChild->GetParent() == this, "Not one of our kids!");
#endif
#endif
if (mLastChild == aChild) {
mLastChild = mLastChild->GetPrevSibling();
}
if (mFirstChild == aChild) {
mFirstChild = mFirstChild->GetNextSibling();
}
// Now remove from the list. Make sure that we pass ownership of the tail
// of the list correctly before we have aChild let go of it.
nsIWidget* prev = aChild->GetPrevSibling();
nsIWidget* next = aChild->GetNextSibling();
if (prev) {
prev->SetNextSibling(next);
}
if (next) {
next->SetPrevSibling(prev);
}
aChild->SetNextSibling(nullptr);
aChild->SetPrevSibling(nullptr);
}
//-------------------------------------------------------------------------
//
// Sets widget's position within its parent's child list.
//
//-------------------------------------------------------------------------
void nsBaseWidget::SetZIndex(int32_t aZIndex)
{
// Hold a ref to ourselves just in case, since we're going to remove
// from our parent.
nsCOMPtr<nsIWidget> kungFuDeathGrip(this);
mZIndex = aZIndex;
// reorder this child in its parent's list.
nsBaseWidget* parent = static_cast<nsBaseWidget*>(GetParent());
if (parent) {
parent->RemoveChild(this);
// Scope sib outside the for loop so we can check it afterward
nsIWidget* sib = parent->GetFirstChild();
for ( ; sib; sib = sib->GetNextSibling()) {
int32_t childZIndex = GetZIndex();
if (aZIndex < childZIndex) {
// Insert ourselves before sib
nsIWidget* prev = sib->GetPrevSibling();
mNextSibling = sib;
mPrevSibling = prev;
sib->SetPrevSibling(this);
if (prev) {
prev->SetNextSibling(this);
} else {
NS_ASSERTION(sib == parent->mFirstChild, "Broken child list");
// We've taken ownership of sib, so it's safe to have parent let
// go of it
parent->mFirstChild = this;
}
PlaceBehind(eZPlacementBelow, sib, false);
break;
}
}
// were we added to the list?
if (!sib) {
parent->AddChild(this);
}
}
}
//-------------------------------------------------------------------------
//
// Maximize, minimize or restore the window. The BaseWidget implementation
// merely stores the state.
//
//-------------------------------------------------------------------------
void
nsBaseWidget::SetSizeMode(nsSizeMode aMode)
{
MOZ_ASSERT(aMode == nsSizeMode_Normal ||
aMode == nsSizeMode_Minimized ||
aMode == nsSizeMode_Maximized ||
aMode == nsSizeMode_Fullscreen);
mSizeMode = aMode;
}
//-------------------------------------------------------------------------
//
// Get this component cursor
//
//-------------------------------------------------------------------------
nsCursor nsBaseWidget::GetCursor()
{
return mCursor;
}
NS_IMETHODIMP nsBaseWidget::SetCursor(nsCursor aCursor)
{
mCursor = aCursor;
return NS_OK;
}
NS_IMETHODIMP nsBaseWidget::SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
//-------------------------------------------------------------------------
//
// Window transparency methods
//
//-------------------------------------------------------------------------
void nsBaseWidget::SetTransparencyMode(nsTransparencyMode aMode) {
}
nsTransparencyMode nsBaseWidget::GetTransparencyMode() {
return eTransparencyOpaque;
}
bool
nsBaseWidget::IsWindowClipRegionEqual(const nsTArray<LayoutDeviceIntRect>& aRects)
{
return mClipRects &&
mClipRectCount == aRects.Length() &&
memcmp(mClipRects.get(), aRects.Elements(), sizeof(LayoutDeviceIntRect)*mClipRectCount) == 0;
}
void
nsBaseWidget::StoreWindowClipRegion(const nsTArray<LayoutDeviceIntRect>& aRects)
{
mClipRectCount = aRects.Length();
mClipRects = MakeUnique<LayoutDeviceIntRect[]>(mClipRectCount);
if (mClipRects) {
memcpy(mClipRects.get(), aRects.Elements(), sizeof(LayoutDeviceIntRect)*mClipRectCount);
}
}
void
nsBaseWidget::GetWindowClipRegion(nsTArray<LayoutDeviceIntRect>* aRects)
{
if (mClipRects) {
aRects->AppendElements(mClipRects.get(), mClipRectCount);
} else {
aRects->AppendElement(LayoutDeviceIntRect(0, 0, mBounds.width, mBounds.height));
}
}
const LayoutDeviceIntRegion
nsBaseWidget::RegionFromArray(const nsTArray<LayoutDeviceIntRect>& aRects)
{
LayoutDeviceIntRegion region;
for (uint32_t i = 0; i < aRects.Length(); ++i) {
region.Or(region, aRects[i]);
}
return region;
}
void
nsBaseWidget::ArrayFromRegion(const LayoutDeviceIntRegion& aRegion,
nsTArray<LayoutDeviceIntRect>& aRects)
{
for (auto iter = aRegion.RectIter(); !iter.Done(); iter.Next()) {
aRects.AppendElement(iter.Get());
}
}
nsresult
nsBaseWidget::SetWindowClipRegion(const nsTArray<LayoutDeviceIntRect>& aRects,
bool aIntersectWithExisting)
{
if (!aIntersectWithExisting) {
StoreWindowClipRegion(aRects);
} else {
// get current rects
nsTArray<LayoutDeviceIntRect> currentRects;
GetWindowClipRegion(&currentRects);
// create region from them
LayoutDeviceIntRegion currentRegion = RegionFromArray(currentRects);
// create region from new rects
LayoutDeviceIntRegion newRegion = RegionFromArray(aRects);
// intersect regions
LayoutDeviceIntRegion intersection;
intersection.And(currentRegion, newRegion);
// create int rect array from intersection
nsTArray<LayoutDeviceIntRect> rects;
ArrayFromRegion(intersection, rects);
// store
StoreWindowClipRegion(rects);
}
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Hide window borders/decorations for this widget
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsBaseWidget::HideWindowChrome(bool aShouldHide)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
/* virtual */ void
nsBaseWidget::PerformFullscreenTransition(FullscreenTransitionStage aStage,
uint16_t aDuration,
nsISupports* aData,
nsIRunnable* aCallback)
{
MOZ_ASSERT_UNREACHABLE(
"Should never call PerformFullscreenTransition on nsBaseWidget");
}
//-------------------------------------------------------------------------
//
// Put the window into full-screen mode
//
//-------------------------------------------------------------------------
void
nsBaseWidget::InfallibleMakeFullScreen(bool aFullScreen, nsIScreen* aScreen)
{
HideWindowChrome(aFullScreen);
if (aFullScreen) {
if (!mOriginalBounds) {
mOriginalBounds = new LayoutDeviceIntRect();
}
*mOriginalBounds = GetScreenBounds();
// Move to top-left corner of screen and size to the screen dimensions
nsCOMPtr<nsIScreen> screen = aScreen;
if (!screen) {
screen = GetWidgetScreen();
}
if (screen) {
int32_t left, top, width, height;
if (NS_SUCCEEDED(screen->GetRectDisplayPix(&left, &top, &width, &height))) {
Resize(left, top, width, height, true);
}
}
} else if (mOriginalBounds) {
if (BoundsUseDesktopPixels()) {
DesktopRect deskRect = *mOriginalBounds / GetDesktopToDeviceScale();
Resize(deskRect.x, deskRect.y, deskRect.width, deskRect.height, true);
} else {
Resize(mOriginalBounds->x, mOriginalBounds->y, mOriginalBounds->width,
mOriginalBounds->height, true);
}
}
}
nsresult
nsBaseWidget::MakeFullScreen(bool aFullScreen, nsIScreen* aScreen)
{
InfallibleMakeFullScreen(aFullScreen, aScreen);
return NS_OK;
}
nsBaseWidget::AutoLayerManagerSetup::AutoLayerManagerSetup(
nsBaseWidget* aWidget, gfxContext* aTarget,
BufferMode aDoubleBuffering, ScreenRotation aRotation)
: mWidget(aWidget)
{
LayerManager* lm = mWidget->GetLayerManager();
NS_ASSERTION(!lm || lm->GetBackendType() == LayersBackend::LAYERS_BASIC,
"AutoLayerManagerSetup instantiated for non-basic layer backend!");
if (lm) {
mLayerManager = lm->AsBasicLayerManager();
if (mLayerManager) {
mLayerManager->SetDefaultTarget(aTarget);
mLayerManager->SetDefaultTargetConfiguration(aDoubleBuffering, aRotation);
}
}
}
nsBaseWidget::AutoLayerManagerSetup::~AutoLayerManagerSetup()
{
if (mLayerManager) {
mLayerManager->SetDefaultTarget(nullptr);
mLayerManager->SetDefaultTargetConfiguration(mozilla::layers::BufferMode::BUFFER_NONE, ROTATION_0);
}
}
bool nsBaseWidget::IsSmallPopup() const
{
return mWindowType == eWindowType_popup && mPopupType != ePopupTypePanel;
}
bool
nsBaseWidget::ComputeShouldAccelerate()
{
return gfx::gfxConfig::IsEnabled(gfx::Feature::HW_COMPOSITING) &&
WidgetTypeSupportsAcceleration();
}
bool
nsBaseWidget::UseAPZ()
{
return (gfxPlatform::AsyncPanZoomEnabled() &&
(WindowType() == eWindowType_toplevel || WindowType() == eWindowType_child));
}
void nsBaseWidget::CreateCompositor()
{
LayoutDeviceIntRect rect = GetBounds();
CreateCompositor(rect.width, rect.height);
}
already_AddRefed<GeckoContentController>
nsBaseWidget::CreateRootContentController()
{
RefPtr<GeckoContentController> controller = new ChromeProcessController(this, mAPZEventState, mAPZC);
return controller.forget();
}
void nsBaseWidget::ConfigureAPZCTreeManager()
{
MOZ_ASSERT(mAPZC);
ConfigureAPZControllerThread();
mAPZC->SetDPI(GetDPI());
RefPtr<IAPZCTreeManager> treeManager = mAPZC; // for capture by the lambdas
ContentReceivedInputBlockCallback callback(
[treeManager](const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId,
bool aPreventDefault)
{
MOZ_ASSERT(NS_IsMainThread());
APZThreadUtils::RunOnControllerThread(NewRunnableMethod
<uint64_t, bool>(treeManager,
&IAPZCTreeManager::ContentReceivedInputBlock,
aInputBlockId,
aPreventDefault));
});
mAPZEventState = new APZEventState(this, mozilla::Move(callback));
mSetAllowedTouchBehaviorCallback = [treeManager](uint64_t aInputBlockId,
const nsTArray<TouchBehaviorFlags>& aFlags)
{
MOZ_ASSERT(NS_IsMainThread());
APZThreadUtils::RunOnControllerThread(NewRunnableMethod
<uint64_t,
StoreCopyPassByLRef<nsTArray<TouchBehaviorFlags>>>(treeManager,
&IAPZCTreeManager::SetAllowedTouchBehavior,
aInputBlockId, aFlags));
};
mRootContentController = CreateRootContentController();
if (mRootContentController) {
mCompositorSession->SetContentController(mRootContentController);
}
// When APZ is enabled, we can actually enable raw touch events because we
// have code that can deal with them properly. If APZ is not enabled, this
// function doesn't get called.
if (Preferences::GetInt("dom.w3c_touch_events.enabled", 0) ||
Preferences::GetBool("dom.w3c_pointer_events.enabled", false)) {
RegisterTouchWindow();
}
}
void nsBaseWidget::ConfigureAPZControllerThread()
{
// By default the controller thread is the main thread.
APZThreadUtils::SetControllerThread(MessageLoop::current());
}
void
nsBaseWidget::SetConfirmedTargetAPZC(uint64_t aInputBlockId,
const nsTArray<ScrollableLayerGuid>& aTargets) const
{
APZThreadUtils::RunOnControllerThread(NewRunnableMethod
<uint64_t, StoreCopyPassByRRef<nsTArray<ScrollableLayerGuid>>>(mAPZC,
&IAPZCTreeManager::SetTargetAPZC,
aInputBlockId, aTargets));
}
void
nsBaseWidget::UpdateZoomConstraints(const uint32_t& aPresShellId,
const FrameMetrics::ViewID& aViewId,
const Maybe<ZoomConstraints>& aConstraints)
{
if (!mCompositorSession || !mAPZC) {
if (mInitialZoomConstraints) {
MOZ_ASSERT(mInitialZoomConstraints->mPresShellID == aPresShellId);
MOZ_ASSERT(mInitialZoomConstraints->mViewID == aViewId);
if (!aConstraints) {
mInitialZoomConstraints.reset();
}
}
if (aConstraints) {
// We have some constraints, but the compositor and APZC aren't created yet.
// Save these so we can use them later.
mInitialZoomConstraints = Some(InitialZoomConstraints(aPresShellId, aViewId, aConstraints.ref()));
}
return;
}
uint64_t layersId = mCompositorSession->RootLayerTreeId();
mAPZC->UpdateZoomConstraints(ScrollableLayerGuid(layersId, aPresShellId, aViewId),
aConstraints);
}
bool
nsBaseWidget::AsyncPanZoomEnabled() const
{
return !!mAPZC;
}
nsEventStatus
nsBaseWidget::ProcessUntransformedAPZEvent(WidgetInputEvent* aEvent,
const ScrollableLayerGuid& aGuid,
uint64_t aInputBlockId,
nsEventStatus aApzResponse)
{
MOZ_ASSERT(NS_IsMainThread());
InputAPZContext context(aGuid, aInputBlockId, aApzResponse);
// If this is an event that the APZ has targeted to an APZC in the root
// process, apply that APZC's callback-transform before dispatching the
// event. If the event is instead targeted to an APZC in the child process,
// the transform will be applied in the child process before dispatching
// the event there (see e.g. TabChild::RecvRealTouchEvent()).
if (aGuid.mLayersId == mCompositorSession->RootLayerTreeId()) {
APZCCallbackHelper::ApplyCallbackTransform(*aEvent, aGuid,
GetDefaultScale());
}
// Make a copy of the original event for the APZCCallbackHelper helpers that
// we call later, because the event passed to DispatchEvent can get mutated in
// ways that we don't want (i.e. touch points can get stripped out).
nsEventStatus status;
UniquePtr<WidgetEvent> original(aEvent->Duplicate());
DispatchEvent(aEvent, status);
if (mAPZC && !context.WasRoutedToChildProcess() && aInputBlockId) {
// EventStateManager did not route the event into the child process.
// It's safe to communicate to APZ that the event has been processed.
// TODO: Eventually we'll be able to move the SendSetTargetAPZCNotification
// call into APZEventState::Process*Event() as well.
if (WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent()) {
if (touchEvent->mMessage == eTouchStart) {
if (gfxPrefs::TouchActionEnabled()) {
APZCCallbackHelper::SendSetAllowedTouchBehaviorNotification(this,
GetDocument(), *(original->AsTouchEvent()), aInputBlockId,
mSetAllowedTouchBehaviorCallback);
}
APZCCallbackHelper::SendSetTargetAPZCNotification(this, GetDocument(),
*(original->AsTouchEvent()), aGuid, aInputBlockId);
}
mAPZEventState->ProcessTouchEvent(*touchEvent, aGuid, aInputBlockId,
aApzResponse, status);
} else if (WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent()) {
MOZ_ASSERT(wheelEvent->mFlags.mHandledByAPZ);
APZCCallbackHelper::SendSetTargetAPZCNotification(this, GetDocument(),
*(original->AsWheelEvent()), aGuid, aInputBlockId);
if (wheelEvent->mCanTriggerSwipe) {
ReportSwipeStarted(aInputBlockId, wheelEvent->TriggersSwipe());
}
mAPZEventState->ProcessWheelEvent(*wheelEvent, aGuid, aInputBlockId);
} else if (WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent()) {
MOZ_ASSERT(mouseEvent->mFlags.mHandledByAPZ);
APZCCallbackHelper::SendSetTargetAPZCNotification(this, GetDocument(),
*(original->AsMouseEvent()), aGuid, aInputBlockId);
mAPZEventState->ProcessMouseEvent(*mouseEvent, aGuid, aInputBlockId);
}
}
return status;
}
class DispatchWheelEventOnMainThread : public Runnable
{
public:
DispatchWheelEventOnMainThread(const ScrollWheelInput& aWheelInput,
nsBaseWidget* aWidget,
nsEventStatus aAPZResult,
uint64_t aInputBlockId,
ScrollableLayerGuid aGuid)
: mWheelInput(aWheelInput)
, mWidget(aWidget)
, mAPZResult(aAPZResult)
, mInputBlockId(aInputBlockId)
, mGuid(aGuid)
{
}
NS_IMETHOD Run() override
{
WidgetWheelEvent wheelEvent = mWheelInput.ToWidgetWheelEvent(mWidget);
mWidget->ProcessUntransformedAPZEvent(&wheelEvent, mGuid, mInputBlockId, mAPZResult);
return NS_OK;
}
private:
ScrollWheelInput mWheelInput;
nsBaseWidget* mWidget;
nsEventStatus mAPZResult;
uint64_t mInputBlockId;
ScrollableLayerGuid mGuid;
};
class DispatchWheelInputOnControllerThread : public Runnable
{
public:
DispatchWheelInputOnControllerThread(const WidgetWheelEvent& aWheelEvent,
IAPZCTreeManager* aAPZC,
nsBaseWidget* aWidget)
: mMainMessageLoop(MessageLoop::current())
, mWheelInput(aWheelEvent)
, mAPZC(aAPZC)
, mWidget(aWidget)
, mInputBlockId(0)
{
}
NS_IMETHOD Run() override
{
nsEventStatus result = mAPZC->ReceiveInputEvent(mWheelInput, &mGuid, &mInputBlockId);
if (result == nsEventStatus_eConsumeNoDefault) {
return NS_OK;
}
RefPtr<Runnable> r = new DispatchWheelEventOnMainThread(mWheelInput, mWidget, result, mInputBlockId, mGuid);
mMainMessageLoop->PostTask(r.forget());
return NS_OK;
}
private:
MessageLoop* mMainMessageLoop;
ScrollWheelInput mWheelInput;
RefPtr<IAPZCTreeManager> mAPZC;
nsBaseWidget* mWidget;
uint64_t mInputBlockId;
ScrollableLayerGuid mGuid;
};
void
nsBaseWidget::DispatchTouchInput(MultiTouchInput& aInput)
{
MOZ_ASSERT(NS_IsMainThread());
if (mAPZC) {
MOZ_ASSERT(APZThreadUtils::IsControllerThread());
uint64_t inputBlockId = 0;
ScrollableLayerGuid guid;
nsEventStatus result = mAPZC->ReceiveInputEvent(aInput, &guid, &inputBlockId);
if (result == nsEventStatus_eConsumeNoDefault) {
return;
}
WidgetTouchEvent event = aInput.ToWidgetTouchEvent(this);
ProcessUntransformedAPZEvent(&event, guid, inputBlockId, result);
} else {
WidgetTouchEvent event = aInput.ToWidgetTouchEvent(this);
nsEventStatus status;
DispatchEvent(&event, status);
}
}
nsEventStatus
nsBaseWidget::DispatchInputEvent(WidgetInputEvent* aEvent)
{
MOZ_ASSERT(NS_IsMainThread());
if (mAPZC) {
if (APZThreadUtils::IsControllerThread()) {
uint64_t inputBlockId = 0;
ScrollableLayerGuid guid;
nsEventStatus result = mAPZC->ReceiveInputEvent(*aEvent, &guid, &inputBlockId);
if (result == nsEventStatus_eConsumeNoDefault) {
return result;
}
return ProcessUntransformedAPZEvent(aEvent, guid, inputBlockId, result);
} else {
WidgetWheelEvent* wheelEvent = aEvent->AsWheelEvent();
if (wheelEvent) {
RefPtr<Runnable> r = new DispatchWheelInputOnControllerThread(*wheelEvent, mAPZC, this);
APZThreadUtils::RunOnControllerThread(r.forget());
return nsEventStatus_eConsumeDoDefault;
}
MOZ_CRASH();
}
}
nsEventStatus status;
DispatchEvent(aEvent, status);
return status;
}
void
nsBaseWidget::DispatchEventToAPZOnly(mozilla::WidgetInputEvent* aEvent)
{
MOZ_ASSERT(NS_IsMainThread());
if (mAPZC) {
MOZ_ASSERT(APZThreadUtils::IsControllerThread());
uint64_t inputBlockId = 0;
ScrollableLayerGuid guid;
mAPZC->ReceiveInputEvent(*aEvent, &guid, &inputBlockId);
}
}
nsIDocument*
nsBaseWidget::GetDocument() const
{
if (mWidgetListener) {
if (nsIPresShell* presShell = mWidgetListener->GetPresShell()) {
return presShell->GetDocument();
}
}
return nullptr;
}
void nsBaseWidget::CreateCompositorVsyncDispatcher()
{
// Parent directly listens to the vsync source whereas
// child process communicate via IPC
// Should be called AFTER gfxPlatform is initialized
if (XRE_IsParentProcess()) {
mCompositorVsyncDispatcher = new CompositorVsyncDispatcher();
}
}
CompositorVsyncDispatcher*
nsBaseWidget::GetCompositorVsyncDispatcher()
{
return mCompositorVsyncDispatcher;
}
void nsBaseWidget::CreateCompositor(int aWidth, int aHeight)
{
// This makes sure that gfxPlatforms gets initialized if it hasn't by now.
gfxPlatform::GetPlatform();
MOZ_ASSERT(gfxPlatform::UsesOffMainThreadCompositing(),
"This function assumes OMTC");
MOZ_ASSERT(!mCompositorSession && !mCompositorBridgeChild,
"Should have properly cleaned up the previous PCompositor pair beforehand");
if (mCompositorBridgeChild) {
mCompositorBridgeChild->Destroy();
}
// Recreating this is tricky, as we may still have an old and we need
// to make sure it's properly destroyed by calling DestroyCompositor!
// If we've already received a shutdown notification, don't try
// create a new compositor.
if (!mShutdownObserver) {
return;
}
CreateCompositorVsyncDispatcher();
RefPtr<ClientLayerManager> lm = new ClientLayerManager(this);
bool useAPZ = UseAPZ();
gfx::GPUProcessManager* gpu = gfx::GPUProcessManager::Get();
mCompositorSession = gpu->CreateTopLevelCompositor(
this,
lm,
GetDefaultScale(),
useAPZ,
UseExternalCompositingSurface(),
gfx::IntSize(aWidth, aHeight));
mCompositorBridgeChild = mCompositorSession->GetCompositorBridgeChild();
mCompositorWidgetDelegate = mCompositorSession->GetCompositorWidgetDelegate();
if (useAPZ) {
mAPZC = mCompositorSession->GetAPZCTreeManager();
ConfigureAPZCTreeManager();
} else {
mAPZC = nullptr;
}
if (mInitialZoomConstraints) {
UpdateZoomConstraints(mInitialZoomConstraints->mPresShellID,
mInitialZoomConstraints->mViewID,
Some(mInitialZoomConstraints->mConstraints));
mInitialZoomConstraints.reset();
}
ShadowLayerForwarder* lf = lm->AsShadowForwarder();
// As long as we are creating a ClientLayerManager above lf must be non-null.
MOZ_ASSERT(lf);
if (lf) {
TextureFactoryIdentifier textureFactoryIdentifier;
PLayerTransactionChild* shadowManager = nullptr;
nsTArray<LayersBackend> backendHints;
gfxPlatform::GetPlatform()->GetCompositorBackends(ComputeShouldAccelerate(), backendHints);
bool success = false;
if (!backendHints.IsEmpty()) {
shadowManager = mCompositorBridgeChild->SendPLayerTransactionConstructor(
backendHints, 0, &textureFactoryIdentifier, &success);
}
if (!success) {
NS_WARNING("Failed to create an OMT compositor.");
DestroyCompositor();
mLayerManager = nullptr;
return;
}
lf->SetShadowManager(shadowManager);
if (ClientLayerManager* clm = lm->AsClientLayerManager()) {
clm->UpdateTextureFactoryIdentifier(textureFactoryIdentifier);
}
// Some popup or transparent widgets may use a different backend than the
// compositors used with ImageBridge and VR (and more generally web content).
if (WidgetTypeSupportsAcceleration()) {
ImageBridgeChild::IdentifyCompositorTextureHost(textureFactoryIdentifier);
}
}
WindowUsesOMTC();
mLayerManager = lm.forget();
// Only track compositors for top-level windows, since other window types
// may use the basic compositor. Except on the OS X - see bug 1306383
#if defined(XP_MACOSX)
bool getCompositorFromThisWindow = true;
#else
bool getCompositorFromThisWindow = (mWindowType == eWindowType_toplevel);
#endif
if (getCompositorFromThisWindow) {
gfxPlatform::GetPlatform()->NotifyCompositorCreated(mLayerManager->GetCompositorBackendType());
}
}
void nsBaseWidget::NotifyRemoteCompositorSessionLost(CompositorSession* aSession)
{
MOZ_ASSERT(aSession == mCompositorSession);
DestroyLayerManager();
}
bool nsBaseWidget::ShouldUseOffMainThreadCompositing()
{
return gfxPlatform::UsesOffMainThreadCompositing();
}
LayerManager* nsBaseWidget::GetLayerManager(PLayerTransactionChild* aShadowManager,
LayersBackend aBackendHint,
LayerManagerPersistence aPersistence)
{
if (!mLayerManager) {
if (!mShutdownObserver) {
// We are shutting down, do not try to re-create a LayerManager
return nullptr;
}
// Try to use an async compositor first, if possible
if (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) {
mLayerManager = CreateBasicLayerManager();
}
}
return mLayerManager;
}
LayerManager* nsBaseWidget::CreateBasicLayerManager()
{
return new BasicLayerManager(this);
}
CompositorBridgeChild* nsBaseWidget::GetRemoteRenderer()
{
return mCompositorBridgeChild;
}
already_AddRefed<gfx::DrawTarget>
nsBaseWidget::StartRemoteDrawing()
{
return nullptr;
}
uint32_t
nsBaseWidget::GetGLFrameBufferFormat()
{
return LOCAL_GL_RGBA;
}
//-------------------------------------------------------------------------
//
// Destroy the window
//
//-------------------------------------------------------------------------
void nsBaseWidget::OnDestroy()
{
if (mTextEventDispatcher) {
mTextEventDispatcher->OnDestroyWidget();
// Don't release it until this widget actually released because after this
// is called, TextEventDispatcher() may create it again.
}
// If this widget is being destroyed, let the APZ code know to drop references
// to this widget. Callers of this function all should be holding a deathgrip
// on this widget already.
ReleaseContentController();
}
NS_IMETHODIMP nsBaseWidget::MoveClient(double aX, double aY)
{
LayoutDeviceIntPoint clientOffset(GetClientOffset());
// GetClientOffset returns device pixels; scale back to desktop pixels
// if that's what this widget uses for the Move/Resize APIs
if (BoundsUseDesktopPixels()) {
DesktopPoint desktopOffset = clientOffset / GetDesktopToDeviceScale();
return Move(aX - desktopOffset.x, aY - desktopOffset.y);
} else {
return Move(aX - clientOffset.x, aY - clientOffset.y);
}
}
NS_IMETHODIMP nsBaseWidget::ResizeClient(double aWidth,
double aHeight,
bool aRepaint)
{
NS_ASSERTION((aWidth >=0) , "Negative width passed to ResizeClient");
NS_ASSERTION((aHeight >=0), "Negative height passed to ResizeClient");
LayoutDeviceIntRect clientBounds = GetClientBounds();
// GetClientBounds and mBounds are device pixels; scale back to desktop pixels
// if that's what this widget uses for the Move/Resize APIs
if (BoundsUseDesktopPixels()) {
DesktopSize desktopDelta =
(LayoutDeviceIntSize(mBounds.width, mBounds.height) -
clientBounds.Size()) / GetDesktopToDeviceScale();
return Resize(aWidth + desktopDelta.width, aHeight + desktopDelta.height,
aRepaint);
} else {
return Resize(mBounds.width + (aWidth - clientBounds.width),
mBounds.height + (aHeight - clientBounds.height), aRepaint);
}
}
NS_IMETHODIMP nsBaseWidget::ResizeClient(double aX,
double aY,
double aWidth,
double aHeight,
bool aRepaint)
{
NS_ASSERTION((aWidth >=0) , "Negative width passed to ResizeClient");
NS_ASSERTION((aHeight >=0), "Negative height passed to ResizeClient");
LayoutDeviceIntRect clientBounds = GetClientBounds();
LayoutDeviceIntPoint clientOffset = GetClientOffset();
if (BoundsUseDesktopPixels()) {
DesktopToLayoutDeviceScale scale = GetDesktopToDeviceScale();
DesktopPoint desktopOffset = clientOffset / scale;
DesktopSize desktopDelta =
(LayoutDeviceIntSize(mBounds.width, mBounds.height) -
clientBounds.Size()) / scale;
return Resize(aX - desktopOffset.x, aY - desktopOffset.y,
aWidth + desktopDelta.width, aHeight + desktopDelta.height,
aRepaint);
} else {
return Resize(aX - clientOffset.x, aY - clientOffset.y,
aWidth + mBounds.width - clientBounds.width,
aHeight + mBounds.height - clientBounds.height,
aRepaint);
}
}
//-------------------------------------------------------------------------
//
// Bounds
//
//-------------------------------------------------------------------------
/**
* If the implementation of nsWindow supports borders this method MUST be overridden
*
**/
LayoutDeviceIntRect
nsBaseWidget::GetClientBounds()
{
return GetBounds();
}
/**
* If the implementation of nsWindow supports borders this method MUST be overridden
*
**/
LayoutDeviceIntRect
nsBaseWidget::GetBounds()
{
return mBounds;
}
/**
* If the implementation of nsWindow uses a local coordinate system within the window,
* this method must be overridden
*
**/
LayoutDeviceIntRect
nsBaseWidget::GetScreenBounds()
{
return GetBounds();
}
nsresult
nsBaseWidget::GetRestoredBounds(LayoutDeviceIntRect& aRect)
{
if (SizeMode() != nsSizeMode_Normal) {
return NS_ERROR_FAILURE;
}
aRect = GetScreenBounds();
return NS_OK;
}
LayoutDeviceIntPoint
nsBaseWidget::GetClientOffset()
{
return LayoutDeviceIntPoint(0, 0);
}
NS_IMETHODIMP
nsBaseWidget::SetNonClientMargins(LayoutDeviceIntMargin &margins)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
uint32_t nsBaseWidget::GetMaxTouchPoints() const
{
return 0;
}
NS_IMETHODIMP
nsBaseWidget::GetAttention(int32_t aCycleCount) {
return NS_OK;
}
bool
nsBaseWidget::HasPendingInputEvent()
{
return false;
}
NS_IMETHODIMP
nsBaseWidget::SetIcon(const nsAString&)
{
return NS_OK;
}
bool
nsBaseWidget::ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect)
{
return false;
}
/**
* Modifies aFile to point at an icon file with the given name and suffix. The
* suffix may correspond to a file extension with leading '.' if appropriate.
* Returns true if the icon file exists and can be read.
*/
static bool
ResolveIconNameHelper(nsIFile *aFile,
const nsAString &aIconName,
const nsAString &aIconSuffix)
{
aFile->Append(NS_LITERAL_STRING("icons"));
aFile->Append(NS_LITERAL_STRING("default"));
aFile->Append(aIconName + aIconSuffix);
bool readable;
return NS_SUCCEEDED(aFile->IsReadable(&readable)) && readable;
}
/**
* Resolve the given icon name into a local file object. This method is
* intended to be called by subclasses of nsBaseWidget. aIconSuffix is a
* platform specific icon file suffix (e.g., ".ico" under Win32).
*
* If no file is found matching the given parameters, then null is returned.
*/
void
nsBaseWidget::ResolveIconName(const nsAString &aIconName,
const nsAString &aIconSuffix,
nsIFile **aResult)
{
*aResult = nullptr;
nsCOMPtr<nsIProperties> dirSvc = do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
if (!dirSvc)
return;
// first check auxilary chrome directories
nsCOMPtr<nsISimpleEnumerator> dirs;
dirSvc->Get(NS_APP_CHROME_DIR_LIST, NS_GET_IID(nsISimpleEnumerator),
getter_AddRefs(dirs));
if (dirs) {
bool hasMore;
while (NS_SUCCEEDED(dirs->HasMoreElements(&hasMore)) && hasMore) {
nsCOMPtr<nsISupports> element;
dirs->GetNext(getter_AddRefs(element));
if (!element)
continue;
nsCOMPtr<nsIFile> file = do_QueryInterface(element);
if (!file)
continue;
if (ResolveIconNameHelper(file, aIconName, aIconSuffix)) {
NS_ADDREF(*aResult = file);
return;
}
}
}
// then check the main app chrome directory
nsCOMPtr<nsIFile> file;
dirSvc->Get(NS_APP_CHROME_DIR, NS_GET_IID(nsIFile),
getter_AddRefs(file));
if (file && ResolveIconNameHelper(file, aIconName, aIconSuffix))
NS_ADDREF(*aResult = file);
}
NS_IMETHODIMP
nsBaseWidget::BeginResizeDrag(WidgetGUIEvent* aEvent,
int32_t aHorizontal,
int32_t aVertical)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsBaseWidget::BeginMoveDrag(WidgetMouseEvent* aEvent)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
void nsBaseWidget::SetSizeConstraints(const SizeConstraints& aConstraints)
{
mSizeConstraints = aConstraints;
// We can't ensure that the size is honored at this point because we're
// probably in the middle of a reflow.
}
const widget::SizeConstraints nsBaseWidget::GetSizeConstraints()
{
return mSizeConstraints;
}
// static
nsIRollupListener*
nsBaseWidget::GetActiveRollupListener()
{
// If set, then this is likely an <html:select> dropdown.
if (gRollupListener)
return gRollupListener;
return nsXULPopupManager::GetInstance();
}
void
nsBaseWidget::NotifyWindowDestroyed()
{
if (!mWidgetListener)
return;
nsCOMPtr<nsIXULWindow> window = mWidgetListener->GetXULWindow();
nsCOMPtr<nsIBaseWindow> xulWindow(do_QueryInterface(window));
if (xulWindow) {
xulWindow->Destroy();
}
}
void
nsBaseWidget::NotifySizeMoveDone()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->WindowSizeMoveDone();
}
}
void
nsBaseWidget::NotifyWindowMoved(int32_t aX, int32_t aY)
{
if (mWidgetListener) {
mWidgetListener->WindowMoved(this, aX, aY);
}
if (mIMEHasFocus && GetIMEUpdatePreference().WantPositionChanged()) {
NotifyIME(IMENotification(IMEMessage::NOTIFY_IME_OF_POSITION_CHANGE));
}
}
void
nsBaseWidget::NotifySysColorChanged()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->SysColorChanged();
}
}
void
nsBaseWidget::NotifyThemeChanged()
{
if (!mWidgetListener || mWidgetListener->GetXULWindow())
return;
nsIPresShell* presShell = mWidgetListener->GetPresShell();
if (presShell) {
presShell->ThemeChanged();
}
}
void
nsBaseWidget::NotifyUIStateChanged(UIStateChangeType aShowAccelerators,
UIStateChangeType aShowFocusRings)
{
if (nsIDocument* doc = GetDocument()) {
nsPIDOMWindowOuter* win = doc->GetWindow();
if (win) {
win->SetKeyboardIndicators(aShowAccelerators, aShowFocusRings);
}
}
}
NS_IMETHODIMP
nsBaseWidget::NotifyIME(const IMENotification& aIMENotification)
{
switch (aIMENotification.mMessage) {
case REQUEST_TO_COMMIT_COMPOSITION:
case REQUEST_TO_CANCEL_COMPOSITION:
// Currently, if native IME handler doesn't use TextEventDispatcher,
// the request may be notified to mTextEventDispatcher or native IME
// directly. Therefore, if mTextEventDispatcher has a composition,
// the request should be handled by the mTextEventDispatcher.
if (mTextEventDispatcher && mTextEventDispatcher->IsComposing()) {
return mTextEventDispatcher->NotifyIME(aIMENotification);
}
// Otherwise, it should be handled by native IME.
return NotifyIMEInternal(aIMENotification);
default: {
if (aIMENotification.mMessage == NOTIFY_IME_OF_FOCUS) {
mIMEHasFocus = true;
}
EnsureTextEventDispatcher();
// If the platform specific widget uses TextEventDispatcher for handling
// native IME and keyboard events, IME event handler should be notified
// of the notification via TextEventDispatcher. Otherwise, on the other
// platforms which have not used TextEventDispatcher yet, IME event
// handler should be notified by the old path (NotifyIMEInternal).
nsresult rv = mTextEventDispatcher->NotifyIME(aIMENotification);
nsresult rv2 = NotifyIMEInternal(aIMENotification);
if (aIMENotification.mMessage == NOTIFY_IME_OF_BLUR) {
mIMEHasFocus = false;
}
return rv2 == NS_ERROR_NOT_IMPLEMENTED ? rv : rv2;
}
}
}
void
nsBaseWidget::EnsureTextEventDispatcher()
{
if (mTextEventDispatcher) {
return;
}
mTextEventDispatcher = new TextEventDispatcher(this);
}
NS_IMETHODIMP_(nsIWidget::TextEventDispatcher*)
nsBaseWidget::GetTextEventDispatcher()
{
EnsureTextEventDispatcher();
return mTextEventDispatcher;
}
void*
nsBaseWidget::GetPseudoIMEContext()
{
TextEventDispatcher* dispatcher = GetTextEventDispatcher();
if (!dispatcher) {
return nullptr;
}
return dispatcher->GetPseudoIMEContext();
}
NS_IMETHODIMP_(TextEventDispatcherListener*)
nsBaseWidget::GetNativeTextEventDispatcherListener()
{
// TODO: If all platforms supported use of TextEventDispatcher for handling
// native IME and keyboard events, this method should be removed since
// in such case, this is overridden by all the subclasses.
return nullptr;
}
void
nsBaseWidget::ZoomToRect(const uint32_t& aPresShellId,
const FrameMetrics::ViewID& aViewId,
const CSSRect& aRect,
const uint32_t& aFlags)
{
if (!mCompositorSession || !mAPZC) {
return;
}
uint64_t layerId = mCompositorSession->RootLayerTreeId();
mAPZC->ZoomToRect(ScrollableLayerGuid(layerId, aPresShellId, aViewId), aRect, aFlags);
}
#ifdef ACCESSIBILITY
#if defined(XP_WIN) || defined(XP_MACOSX) || defined(MOZ_WIDGET_GTK)
// defined in nsAppRunner.cpp
extern const char* kAccessibilityLastRunDatePref;
static inline uint32_t
PRTimeToSeconds(PRTime t_usec)
{
PRTime usec_per_sec = PR_USEC_PER_SEC;
return uint32_t(t_usec /= usec_per_sec);
}
#endif
a11y::Accessible*
nsBaseWidget::GetRootAccessible()
{
NS_ENSURE_TRUE(mWidgetListener, nullptr);
nsIPresShell* presShell = mWidgetListener->GetPresShell();
NS_ENSURE_TRUE(presShell, nullptr);
// If container is null then the presshell is not active. This often happens
// when a preshell is being held onto for fastback.
nsPresContext* presContext = presShell->GetPresContext();
NS_ENSURE_TRUE(presContext->GetContainerWeak(), nullptr);
// Accessible creation might be not safe so use IsSafeToRunScript to
// make sure it's not created at unsafe times.
nsAccessibilityService* accService = GetOrCreateAccService();
if (accService) {
#if defined(XP_WIN) || defined(XP_MACOSX) || defined(MOZ_WIDGET_GTK)
if (!mAccessibilityInUseFlag) {
mAccessibilityInUseFlag = true;
uint32_t now = PRTimeToSeconds(PR_Now());
Preferences::SetInt(kAccessibilityLastRunDatePref, now);
}
#endif
return accService->GetRootDocumentAccessible(presShell, nsContentUtils::IsSafeToRunScript());
}
return nullptr;
}
#endif // ACCESSIBILITY
void
nsBaseWidget::StartAsyncScrollbarDrag(const AsyncDragMetrics& aDragMetrics)
{
if (!AsyncPanZoomEnabled()) {
return;
}
MOZ_ASSERT(XRE_IsParentProcess() && mCompositorSession);
int layersId = mCompositorSession->RootLayerTreeId();;
ScrollableLayerGuid guid(layersId, aDragMetrics.mPresShellId, aDragMetrics.mViewId);
APZThreadUtils::RunOnControllerThread(NewRunnableMethod
<ScrollableLayerGuid, AsyncDragMetrics>(mAPZC,
&IAPZCTreeManager::StartScrollbarDrag,
guid, aDragMetrics));
}
already_AddRefed<nsIScreen>
nsBaseWidget::GetWidgetScreen()
{
nsCOMPtr<nsIScreenManager> screenManager;
screenManager = do_GetService("@mozilla.org/gfx/screenmanager;1");
if (!screenManager) {
return nullptr;
}
LayoutDeviceIntRect bounds = GetScreenBounds();
DesktopIntRect deskBounds = RoundedToInt(bounds / GetDesktopToDeviceScale());
nsCOMPtr<nsIScreen> screen;
screenManager->ScreenForRect(deskBounds.x, deskBounds.y,
deskBounds.width, deskBounds.height,
getter_AddRefs(screen));
return screen.forget();
}
nsresult
nsIWidget::SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint, bool aLongTap,
nsIObserver* aObserver)
{
AutoObserverNotifier notifier(aObserver, "touchtap");
if (sPointerIdCounter > TOUCH_INJECT_MAX_POINTS) {
sPointerIdCounter = 0;
}
int pointerId = sPointerIdCounter;
sPointerIdCounter++;
nsresult rv = SynthesizeNativeTouchPoint(pointerId, TOUCH_CONTACT,
aPoint, 1.0, 90, nullptr);
if (NS_FAILED(rv)) {
return rv;
}
if (!aLongTap) {
return SynthesizeNativeTouchPoint(pointerId, TOUCH_REMOVE,
aPoint, 0, 0, nullptr);
}
// initiate a long tap
int elapse = Preferences::GetInt("ui.click_hold_context_menus.delay",
TOUCH_INJECT_LONG_TAP_DEFAULT_MSEC);
if (!mLongTapTimer) {
mLongTapTimer = do_CreateInstance(NS_TIMER_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
SynthesizeNativeTouchPoint(pointerId, TOUCH_CANCEL,
aPoint, 0, 0, nullptr);
return NS_ERROR_UNEXPECTED;
}
// Windows requires recuring events, so we set this to a smaller window
// than the pref value.
int timeout = elapse;
if (timeout > TOUCH_INJECT_PUMP_TIMER_MSEC) {
timeout = TOUCH_INJECT_PUMP_TIMER_MSEC;
}
mLongTapTimer->InitWithFuncCallback(OnLongTapTimerCallback, this,
timeout,
nsITimer::TYPE_REPEATING_SLACK);
}
// If we already have a long tap pending, cancel it. We only allow one long
// tap to be active at a time.
if (mLongTapTouchPoint) {
SynthesizeNativeTouchPoint(mLongTapTouchPoint->mPointerId, TOUCH_CANCEL,
mLongTapTouchPoint->mPosition, 0, 0, nullptr);
}
mLongTapTouchPoint =
MakeUnique<LongTapInfo>(pointerId, aPoint,
TimeDuration::FromMilliseconds(elapse),
aObserver);
notifier.SkipNotification(); // we'll do it in the long-tap callback
return NS_OK;
}
// static
void
nsIWidget::OnLongTapTimerCallback(nsITimer* aTimer, void* aClosure)
{
nsIWidget *self = static_cast<nsIWidget *>(aClosure);
if ((self->mLongTapTouchPoint->mStamp + self->mLongTapTouchPoint->mDuration) >
TimeStamp::Now()) {
#ifdef XP_WIN
// Windows needs us to keep pumping feedback to the digitizer, so update
// the pointer id with the same position.
self->SynthesizeNativeTouchPoint(self->mLongTapTouchPoint->mPointerId,
TOUCH_CONTACT,
self->mLongTapTouchPoint->mPosition,
1.0, 90, nullptr);
#endif
return;
}
AutoObserverNotifier notifier(self->mLongTapTouchPoint->mObserver, "touchtap");
// finished, remove the touch point
self->mLongTapTimer->Cancel();
self->mLongTapTimer = nullptr;
self->SynthesizeNativeTouchPoint(self->mLongTapTouchPoint->mPointerId,
TOUCH_REMOVE,
self->mLongTapTouchPoint->mPosition,
0, 0, nullptr);
self->mLongTapTouchPoint = nullptr;
}
nsresult
nsIWidget::ClearNativeTouchSequence(nsIObserver* aObserver)
{
AutoObserverNotifier notifier(aObserver, "cleartouch");
if (!mLongTapTimer) {
return NS_OK;
}
mLongTapTimer->Cancel();
mLongTapTimer = nullptr;
SynthesizeNativeTouchPoint(mLongTapTouchPoint->mPointerId, TOUCH_CANCEL,
mLongTapTouchPoint->mPosition, 0, 0, nullptr);
mLongTapTouchPoint = nullptr;
return NS_OK;
}
MultiTouchInput
nsBaseWidget::UpdateSynthesizedTouchState(MultiTouchInput* aState,
uint32_t aTime,
mozilla::TimeStamp aTimeStamp,
uint32_t aPointerId,
TouchPointerState aPointerState,
LayoutDeviceIntPoint aPoint,
double aPointerPressure,
uint32_t aPointerOrientation)
{
ScreenIntPoint pointerScreenPoint = ViewAs<ScreenPixel>(aPoint,
PixelCastJustification::LayoutDeviceIsScreenForBounds);
// We can't dispatch *aState directly because (a) dispatching
// it might inadvertently modify it and (b) in the case of touchend or
// touchcancel events aState will hold the touches that are
// still down whereas the input dispatched needs to hold the removed
// touch(es). We use |inputToDispatch| for this purpose.
MultiTouchInput inputToDispatch;
inputToDispatch.mInputType = MULTITOUCH_INPUT;
inputToDispatch.mTime = aTime;
inputToDispatch.mTimeStamp = aTimeStamp;
int32_t index = aState->IndexOfTouch((int32_t)aPointerId);
if (aPointerState == TOUCH_CONTACT) {
if (index >= 0) {
// found an existing touch point, update it
SingleTouchData& point = aState->mTouches[index];
point.mScreenPoint = pointerScreenPoint;
point.mRotationAngle = (float)aPointerOrientation;
point.mForce = (float)aPointerPressure;
inputToDispatch.mType = MultiTouchInput::MULTITOUCH_MOVE;
} else {
// new touch point, add it
aState->mTouches.AppendElement(SingleTouchData(
(int32_t)aPointerId,
pointerScreenPoint,
ScreenSize(0, 0),
(float)aPointerOrientation,
(float)aPointerPressure));
inputToDispatch.mType = MultiTouchInput::MULTITOUCH_START;
}
inputToDispatch.mTouches = aState->mTouches;
} else {
MOZ_ASSERT(aPointerState == TOUCH_REMOVE || aPointerState == TOUCH_CANCEL);
// a touch point is being lifted, so remove it from the stored list
if (index >= 0) {
aState->mTouches.RemoveElementAt(index);
}
inputToDispatch.mType = (aPointerState == TOUCH_REMOVE
? MultiTouchInput::MULTITOUCH_END
: MultiTouchInput::MULTITOUCH_CANCEL);
inputToDispatch.mTouches.AppendElement(SingleTouchData(
(int32_t)aPointerId,
pointerScreenPoint,
ScreenSize(0, 0),
(float)aPointerOrientation,
(float)aPointerPressure));
}
return inputToDispatch;
}
void
nsBaseWidget::RegisterPluginWindowForRemoteUpdates()
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::RegisterPluginWindowForRemoteUpdates not implemented!");
return;
#else
MOZ_ASSERT(NS_IsMainThread());
void* id = GetNativeData(NS_NATIVE_PLUGIN_ID);
if (!id) {
NS_WARNING("This is not a valid native widget!");
return;
}
MOZ_ASSERT(sPluginWidgetList);
sPluginWidgetList->Put(id, this);
#endif
}
void
nsBaseWidget::UnregisterPluginWindowForRemoteUpdates()
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::UnregisterPluginWindowForRemoteUpdates not implemented!");
return;
#else
MOZ_ASSERT(NS_IsMainThread());
void* id = GetNativeData(NS_NATIVE_PLUGIN_ID);
if (!id) {
NS_WARNING("This is not a valid native widget!");
return;
}
MOZ_ASSERT(sPluginWidgetList);
sPluginWidgetList->Remove(id);
#endif
}
// static
nsIWidget*
nsIWidget::LookupRegisteredPluginWindow(uintptr_t aWindowID)
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::LookupRegisteredPluginWindow not implemented!");
return nullptr;
#else
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(sPluginWidgetList);
return sPluginWidgetList->GetWeak((void*)aWindowID);
#endif
}
// static
void
nsIWidget::UpdateRegisteredPluginWindowVisibility(uintptr_t aOwnerWidget,
nsTArray<uintptr_t>& aPluginIds)
{
#if !defined(XP_WIN) && !defined(MOZ_WIDGET_GTK)
NS_NOTREACHED("nsBaseWidget::UpdateRegisteredPluginWindowVisibility not implemented!");
return;
#else
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(sPluginWidgetList);
// Our visible list is associated with a compositor which is associated with
// a specific top level window. We use the parent widget during iteration
// to skip the plugin widgets owned by other top level windows.
for (auto iter = sPluginWidgetList->Iter(); !iter.Done(); iter.Next()) {
const void* windowId = iter.Key();
nsIWidget* widget = iter.UserData();
MOZ_ASSERT(windowId);
MOZ_ASSERT(widget);
if (!widget->Destroyed()) {
if ((uintptr_t)widget->GetParent() == aOwnerWidget) {
widget->Show(aPluginIds.Contains((uintptr_t)windowId));
}
}
}
#endif
}
#if defined(XP_WIN)
// static
void
nsIWidget::CaptureRegisteredPlugins(uintptr_t aOwnerWidget)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(sPluginWidgetList);
// Our visible list is associated with a compositor which is associated with
// a specific top level window. We use the parent widget during iteration
// to skip the plugin widgets owned by other top level windows.
for (auto iter = sPluginWidgetList->Iter(); !iter.Done(); iter.Next()) {
const void* windowId = iter.Key();
nsIWidget* widget = iter.UserData();
MOZ_ASSERT(windowId);
MOZ_ASSERT(widget);
if (!widget->Destroyed() && widget->IsVisible()) {
if ((uintptr_t)widget->GetParent() == aOwnerWidget) {
widget->UpdateScrollCapture();
}
}
}
}
uint64_t
nsBaseWidget::CreateScrollCaptureContainer()
{
mScrollCaptureContainer =
LayerManager::CreateImageContainer(ImageContainer::ASYNCHRONOUS);
if (!mScrollCaptureContainer) {
NS_WARNING("Failed to create ImageContainer for widget image capture.");
return ImageContainer::sInvalidAsyncContainerId;
}
return mScrollCaptureContainer->GetAsyncContainerID();
}
void
nsBaseWidget::UpdateScrollCapture()
{
// Don't capture if no container or no size.
if (!mScrollCaptureContainer || mBounds.width <= 0 || mBounds.height <= 0) {
return;
}
// If the derived class cannot take a snapshot, for example due to clipping,
// then it is responsible for creating a fallback. If null is returned, this
// means that we want to keep the existing snapshot.
RefPtr<gfx::SourceSurface> snapshot = CreateScrollSnapshot();
if (!snapshot) {
return;
}
ImageContainer::NonOwningImage holder(new SourceSurfaceImage(snapshot));
AutoTArray<ImageContainer::NonOwningImage, 1> imageList;
imageList.AppendElement(holder);
mScrollCaptureContainer->SetCurrentImages(imageList);
}
void
nsBaseWidget::DefaultFillScrollCapture(DrawTarget* aSnapshotDrawTarget)
{
gfx::IntSize dtSize = aSnapshotDrawTarget->GetSize();
aSnapshotDrawTarget->FillRect(
gfx::Rect(0, 0, dtSize.width, dtSize.height),
gfx::ColorPattern(gfx::Color::FromABGR(kScrollCaptureFillColor)),
gfx::DrawOptions(1.f, gfx::CompositionOp::OP_SOURCE));
aSnapshotDrawTarget->Flush();
}
#endif
NS_IMETHODIMP_(nsIWidget::NativeIMEContext)
nsIWidget::GetNativeIMEContext()
{
return NativeIMEContext(this);
}
nsresult
nsIWidget::OnWindowedPluginKeyEvent(const NativeEventData& aKeyEventData,
nsIKeyEventInPluginCallback* aCallback)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
namespace mozilla {
namespace widget {
const char*
ToChar(IMEMessage aIMEMessage)
{
switch (aIMEMessage) {
case NOTIFY_IME_OF_NOTHING:
return "NOTIFY_IME_OF_NOTHING";
case NOTIFY_IME_OF_FOCUS:
return "NOTIFY_IME_OF_FOCUS";
case NOTIFY_IME_OF_BLUR:
return "NOTIFY_IME_OF_BLUR";
case NOTIFY_IME_OF_SELECTION_CHANGE:
return "NOTIFY_IME_OF_SELECTION_CHANGE";
case NOTIFY_IME_OF_TEXT_CHANGE:
return "NOTIFY_IME_OF_TEXT_CHANGE";
case NOTIFY_IME_OF_COMPOSITION_EVENT_HANDLED:
return "NOTIFY_IME_OF_COMPOSITION_EVENT_HANDLED";
case NOTIFY_IME_OF_POSITION_CHANGE:
return "NOTIFY_IME_OF_POSITION_CHANGE";
case NOTIFY_IME_OF_MOUSE_BUTTON_EVENT:
return "NOTIFY_IME_OF_MOUSE_BUTTON_EVENT";
case REQUEST_TO_COMMIT_COMPOSITION:
return "REQUEST_TO_COMMIT_COMPOSITION";
case REQUEST_TO_CANCEL_COMPOSITION:
return "REQUEST_TO_CANCEL_COMPOSITION";
default:
return "Unexpected value";
}
}
void
NativeIMEContext::Init(nsIWidget* aWidget)
{
if (!aWidget) {
mRawNativeIMEContext = reinterpret_cast<uintptr_t>(nullptr);
mOriginProcessID = static_cast<uint64_t>(-1);
return;
}
if (!XRE_IsContentProcess()) {
mRawNativeIMEContext = reinterpret_cast<uintptr_t>(
aWidget->GetNativeData(NS_RAW_NATIVE_IME_CONTEXT));
mOriginProcessID = 0;
return;
}
// If this is created in a child process, aWidget is an instance of
// PuppetWidget which doesn't support NS_RAW_NATIVE_IME_CONTEXT.
// Instead of that PuppetWidget::GetNativeIMEContext() returns cached
// native IME context of the parent process.
*this = aWidget->GetNativeIMEContext();
}
void
NativeIMEContext::InitWithRawNativeIMEContext(void* aRawNativeIMEContext)
{
if (NS_WARN_IF(!aRawNativeIMEContext)) {
mRawNativeIMEContext = reinterpret_cast<uintptr_t>(nullptr);
mOriginProcessID = static_cast<uint64_t>(-1);
return;
}
mRawNativeIMEContext = reinterpret_cast<uintptr_t>(aRawNativeIMEContext);
mOriginProcessID =
XRE_IsContentProcess() ? ContentChild::GetSingleton()->GetID() : 0;
}
void
IMENotification::TextChangeDataBase::MergeWith(
const IMENotification::TextChangeDataBase& aOther)
{
MOZ_ASSERT(aOther.IsValid(),
"Merging data must store valid data");
MOZ_ASSERT(aOther.mStartOffset <= aOther.mRemovedEndOffset,
"end of removed text must be same or larger than start");
MOZ_ASSERT(aOther.mStartOffset <= aOther.mAddedEndOffset,
"end of added text must be same or larger than start");
if (!IsValid()) {
*this = aOther;
return;
}
// |mStartOffset| and |mRemovedEndOffset| represent all replaced or removed
// text ranges. I.e., mStartOffset should be the smallest offset of all
// modified text ranges in old text. |mRemovedEndOffset| should be the
// largest end offset in old text of all modified text ranges.
// |mAddedEndOffset| represents the end offset of all inserted text ranges.
// I.e., only this is an offset in new text.
// In other words, between mStartOffset and |mRemovedEndOffset| of the
// premodified text was already removed. And some text whose length is
// |mAddedEndOffset - mStartOffset| is inserted to |mStartOffset|. I.e.,
// this allows IME to mark dirty the modified text range with |mStartOffset|
// and |mRemovedEndOffset| if IME stores all text of the focused editor and
// to compute new text length with |mAddedEndOffset| and |mRemovedEndOffset|.
// Additionally, IME can retrieve only the text between |mStartOffset| and
// |mAddedEndOffset| for updating stored text.
// For comparing new and old |mStartOffset|/|mRemovedEndOffset| values, they
// should be adjusted to be in same text. The |newData.mStartOffset| and
// |newData.mRemovedEndOffset| should be computed as in old text because
// |mStartOffset| and |mRemovedEndOffset| represent the modified text range
// in the old text but even if some text before the values of the newData
// has already been modified, the values don't include the changes.
// For comparing new and old |mAddedEndOffset| values, they should be
// adjusted to be in same text. The |oldData.mAddedEndOffset| should be
// computed as in the new text because |mAddedEndOffset| indicates the end
// offset of inserted text in the new text but |oldData.mAddedEndOffset|
// doesn't include any changes of the text before |newData.mAddedEndOffset|.
const TextChangeDataBase& newData = aOther;
const TextChangeDataBase oldData = *this;
// mCausedOnlyByComposition should be true only when all changes are caused
// by composition.
mCausedOnlyByComposition =
newData.mCausedOnlyByComposition && oldData.mCausedOnlyByComposition;
// mIncludingChangesWithoutComposition should be true if at least one of
// merged changes occurred without composition.
mIncludingChangesWithoutComposition =
newData.mIncludingChangesWithoutComposition ||
oldData.mIncludingChangesWithoutComposition;
// mIncludingChangesDuringComposition should be true when at least one of
// the merged non-composition changes occurred during the latest composition.
if (!newData.mCausedOnlyByComposition &&
!newData.mIncludingChangesDuringComposition) {
MOZ_ASSERT(newData.mIncludingChangesWithoutComposition);
MOZ_ASSERT(mIncludingChangesWithoutComposition);
// If new change is neither caused by composition nor occurred during
// composition, set mIncludingChangesDuringComposition to false because
// IME doesn't want outdated text changes as text change during current
// composition.
mIncludingChangesDuringComposition = false;
} else {
// Otherwise, set mIncludingChangesDuringComposition to true if either
// oldData or newData includes changes during composition.
mIncludingChangesDuringComposition =
newData.mIncludingChangesDuringComposition ||
oldData.mIncludingChangesDuringComposition;
}
if (newData.mStartOffset >= oldData.mAddedEndOffset) {
// Case 1:
// If new start is after old end offset of added text, it means that text
// after the modified range is modified. Like:
// added range of old change: +----------+
// removed range of new change: +----------+
// So, the old start offset is always the smaller offset.
mStartOffset = oldData.mStartOffset;
// The new end offset of removed text is moved by the old change and we
// need to cancel the move of the old change for comparing the offsets in
// same text because it doesn't make sensce to compare offsets in different
// text.
uint32_t newRemovedEndOffsetInOldText =
newData.mRemovedEndOffset - oldData.Difference();
mRemovedEndOffset =
std::max(newRemovedEndOffsetInOldText, oldData.mRemovedEndOffset);
// The new end offset of added text is always the larger offset.
mAddedEndOffset = newData.mAddedEndOffset;
return;
}
if (newData.mStartOffset >= oldData.mStartOffset) {
// If new start is in the modified range, it means that new data changes
// a part or all of the range.
mStartOffset = oldData.mStartOffset;
if (newData.mRemovedEndOffset >= oldData.mAddedEndOffset) {
// Case 2:
// If new end of removed text is greater than old end of added text, it
// means that all or a part of modified range modified again and text
// after the modified range is also modified. Like:
// added range of old change: +----------+
// removed range of new change: +----------+
// So, the new removed end offset is moved by the old change and we need
// to cancel the move of the old change for comparing the offsets in the
// same text because it doesn't make sense to compare the offsets in
// different text.
uint32_t newRemovedEndOffsetInOldText =
newData.mRemovedEndOffset - oldData.Difference();
mRemovedEndOffset =
std::max(newRemovedEndOffsetInOldText, oldData.mRemovedEndOffset);
// The old end of added text is replaced by new change. So, it should be
// same as the new start. On the other hand, the new added end offset is
// always same or larger. Therefore, the merged end offset of added
// text should be the new end offset of added text.
mAddedEndOffset = newData.mAddedEndOffset;
return;
}
// Case 3:
// If new end of removed text is less than old end of added text, it means
// that only a part of the modified range is modified again. Like:
// added range of old change: +------------+
// removed range of new change: +-----+
// So, the new end offset of removed text should be same as the old end
// offset of removed text. Therefore, the merged end offset of removed
// text should be the old text change's |mRemovedEndOffset|.
mRemovedEndOffset = oldData.mRemovedEndOffset;
// The old end of added text is moved by new change. So, we need to cancel
// the move of the new change for comparing the offsets in same text.
uint32_t oldAddedEndOffsetInNewText =
oldData.mAddedEndOffset + newData.Difference();
mAddedEndOffset =
std::max(newData.mAddedEndOffset, oldAddedEndOffsetInNewText);
return;
}
if (newData.mRemovedEndOffset >= oldData.mStartOffset) {
// If new end of removed text is greater than old start (and new start is
// less than old start), it means that a part of modified range is modified
// again and some new text before the modified range is also modified.
MOZ_ASSERT(newData.mStartOffset < oldData.mStartOffset,
"new start offset should be less than old one here");
mStartOffset = newData.mStartOffset;
if (newData.mRemovedEndOffset >= oldData.mAddedEndOffset) {
// Case 4:
// If new end of removed text is greater than old end of added text, it
// means that all modified text and text after the modified range is
// modified. Like:
// added range of old change: +----------+
// removed range of new change: +------------------+
// So, the new end of removed text is moved by the old change. Therefore,
// we need to cancel the move of the old change for comparing the offsets
// in same text because it doesn't make sense to compare the offsets in
// different text.
uint32_t newRemovedEndOffsetInOldText =
newData.mRemovedEndOffset - oldData.Difference();
mRemovedEndOffset =
std::max(newRemovedEndOffsetInOldText, oldData.mRemovedEndOffset);
// The old end of added text is replaced by new change. So, the old end
// offset of added text is same as new text change's start offset. Then,
// new change's end offset of added text is always same or larger than
// it. Therefore, merged end offset of added text is always the new end
// offset of added text.
mAddedEndOffset = newData.mAddedEndOffset;
return;
}
// Case 5:
// If new end of removed text is less than old end of added text, it
// means that only a part of the modified range is modified again. Like:
// added range of old change: +----------+
// removed range of new change: +----------+
// So, the new end of removed text should be same as old end of removed
// text for preventing end of removed text to be modified. Therefore,
// merged end offset of removed text is always the old end offset of removed
// text.
mRemovedEndOffset = oldData.mRemovedEndOffset;
// The old end of added text is moved by this change. So, we need to
// cancel the move of the new change for comparing the offsets in same text
// because it doesn't make sense to compare the offsets in different text.
uint32_t oldAddedEndOffsetInNewText =
oldData.mAddedEndOffset + newData.Difference();
mAddedEndOffset =
std::max(newData.mAddedEndOffset, oldAddedEndOffsetInNewText);
return;
}
// Case 6:
// Otherwise, i.e., both new end of added text and new start are less than
// old start, text before the modified range is modified. Like:
// added range of old change: +----------+
// removed range of new change: +----------+
MOZ_ASSERT(newData.mStartOffset < oldData.mStartOffset,
"new start offset should be less than old one here")</