mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
677 lines
23 KiB
C++
677 lines
23 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "base/basictypes.h"
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#include "BasicLayers.h"
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#include "gfxPrefs.h"
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#ifdef MOZ_ENABLE_D3D9_LAYER
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# include "LayerManagerD3D9.h"
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#endif //MOZ_ENABLE_D3D9_LAYER
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#include "mozilla/BrowserElementParent.h"
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#include "mozilla/EventForwards.h" // for Modifiers
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/TabParent.h"
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#include "mozilla/layers/APZCTreeManager.h"
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#include "mozilla/layers/APZThreadUtils.h"
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#include "mozilla/layers/CompositorParent.h"
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#include "mozilla/layers/LayerTransactionParent.h"
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#include "nsContentUtils.h"
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#include "nsFocusManager.h"
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#include "nsFrameLoader.h"
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#include "nsIObserver.h"
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#include "nsStyleStructInlines.h"
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#include "nsSubDocumentFrame.h"
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#include "nsView.h"
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#include "nsViewportFrame.h"
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#include "RenderFrameParent.h"
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#include "mozilla/layers/LayerManagerComposite.h"
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#include "mozilla/layers/CompositorChild.h"
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#include "ClientLayerManager.h"
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#include "FrameLayerBuilder.h"
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#ifdef MOZ_ANDROID_APZ
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#include "AndroidBridge.h"
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#endif
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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using namespace mozilla::layers;
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namespace mozilla {
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namespace layout {
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typedef FrameMetrics::ViewID ViewID;
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/**
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* Gets the layer-pixel offset of aContainerFrame's content rect top-left
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* from the nearest display item reference frame (which we assume will be inducing
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* a ContainerLayer).
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*/
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static nsIntPoint
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GetContentRectLayerOffset(nsIFrame* aContainerFrame, nsDisplayListBuilder* aBuilder)
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{
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nscoord auPerDevPixel = aContainerFrame->PresContext()->AppUnitsPerDevPixel();
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// Offset to the content rect in case we have borders or padding
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// Note that aContainerFrame could be a reference frame itself, so
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// we need to be careful here to ensure that we call ToReferenceFrame
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// on aContainerFrame and not its parent.
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nsPoint frameOffset = aBuilder->ToReferenceFrame(aContainerFrame) +
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aContainerFrame->GetContentRectRelativeToSelf().TopLeft();
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return frameOffset.ToNearestPixels(auPerDevPixel);
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}
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// Return true iff |aManager| is a "temporary layer manager". They're
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// used for small software rendering tasks, like drawWindow. That's
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// currently implemented by a BasicLayerManager without a backing
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// widget, and hence in non-retained mode.
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inline static bool
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IsTempLayerManager(LayerManager* aManager)
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{
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return (mozilla::layers::LayersBackend::LAYERS_BASIC == aManager->GetBackendType() &&
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!static_cast<BasicLayerManager*>(aManager)->IsRetained());
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}
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already_AddRefed<LayerManager>
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GetFrom(nsFrameLoader* aFrameLoader)
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{
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nsIDocument* doc = aFrameLoader->GetOwnerDoc();
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if (!doc) {
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return nullptr;
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}
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return nsContentUtils::LayerManagerForDocument(doc);
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}
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class RemoteContentController : public GeckoContentController {
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public:
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explicit RemoteContentController(RenderFrameParent* aRenderFrame)
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: mUILoop(MessageLoop::current())
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, mRenderFrame(aRenderFrame)
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{ }
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virtual void RequestContentRepaint(const FrameMetrics& aFrameMetrics) override
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{
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MOZ_ASSERT(NS_IsMainThread());
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->UpdateFrame(aFrameMetrics);
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}
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}
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virtual void RequestFlingSnap(const FrameMetrics::ViewID& aScrollId,
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const mozilla::CSSPoint& aDestination) override
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{
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if (MessageLoop::current() != mUILoop) {
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// We have to send this message from the "UI thread" (main
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// thread).
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::RequestFlingSnap,
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aScrollId, aDestination));
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return;
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}
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->RequestFlingSnap(aScrollId, aDestination);
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}
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}
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virtual void AcknowledgeScrollUpdate(const FrameMetrics::ViewID& aScrollId,
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const uint32_t& aScrollGeneration) override
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{
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if (MessageLoop::current() != mUILoop) {
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// We have to send this message from the "UI thread" (main
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// thread).
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::AcknowledgeScrollUpdate,
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aScrollId, aScrollGeneration));
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return;
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}
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->AcknowledgeScrollUpdate(aScrollId, aScrollGeneration);
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}
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}
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virtual void HandleDoubleTap(const CSSPoint& aPoint,
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Modifiers aModifiers,
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const ScrollableLayerGuid& aGuid) override
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{
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if (MessageLoop::current() != mUILoop) {
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// We have to send this message from the "UI thread" (main
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// thread).
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::HandleDoubleTap,
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aPoint, aModifiers, aGuid));
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return;
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}
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->HandleDoubleTap(aPoint, aModifiers, aGuid);
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}
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}
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virtual void HandleSingleTap(const CSSPoint& aPoint,
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Modifiers aModifiers,
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const ScrollableLayerGuid& aGuid) override
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{
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if (MessageLoop::current() != mUILoop) {
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// We have to send this message from the "UI thread" (main
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// thread).
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::HandleSingleTap,
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aPoint, aModifiers, aGuid));
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return;
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}
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if (mRenderFrame) {
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mRenderFrame->TakeFocusForClickFromTap();
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->HandleSingleTap(aPoint, aModifiers, aGuid);
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}
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}
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virtual void HandleLongTap(const CSSPoint& aPoint,
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Modifiers aModifiers,
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const ScrollableLayerGuid& aGuid,
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uint64_t aInputBlockId) override
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{
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if (MessageLoop::current() != mUILoop) {
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// We have to send this message from the "UI thread" (main
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// thread).
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::HandleLongTap,
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aPoint, aModifiers, aGuid, aInputBlockId));
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return;
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}
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->HandleLongTap(aPoint, aModifiers, aGuid, aInputBlockId);
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}
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}
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void ClearRenderFrame() { mRenderFrame = nullptr; }
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virtual void PostDelayedTask(Task* aTask, int aDelayMs) override
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{
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#ifdef MOZ_ANDROID_APZ
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AndroidBridge::Bridge()->PostTaskToUiThread(aTask, aDelayMs);
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#else
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(MessageLoop::current() ? MessageLoop::current() : mUILoop)->
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PostDelayedTask(FROM_HERE, aTask, aDelayMs);
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#endif
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}
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virtual bool GetTouchSensitiveRegion(CSSRect* aOutRegion) override
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{
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if (mTouchSensitiveRegion.IsEmpty())
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return false;
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*aOutRegion = CSSRect::FromAppUnits(mTouchSensitiveRegion.GetBounds());
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return true;
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}
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virtual void NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
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APZStateChange aChange,
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int aArg) override
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{
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if (MessageLoop::current() != mUILoop) {
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::NotifyAPZStateChange,
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aGuid, aChange, aArg));
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return;
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}
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->NotifyAPZStateChange(aGuid.mScrollId, aChange, aArg);
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}
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}
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void NotifyMozMouseScrollEvent(const FrameMetrics::ViewID& aScrollId, const nsString& aEvent) override {
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if (MessageLoop::current() != mUILoop) {
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mUILoop->PostTask(
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FROM_HERE,
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NewRunnableMethod(this, &RemoteContentController::NotifyMozMouseScrollEvent, aScrollId, aEvent));
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return;
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}
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->NotifyMouseScrollTestEvent(aScrollId, aEvent);
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}
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}
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void NotifyFlushComplete() override {
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MOZ_ASSERT(NS_IsMainThread());
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if (mRenderFrame) {
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TabParent* browser = TabParent::GetFrom(mRenderFrame->Manager());
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browser->NotifyFlushComplete();
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}
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}
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// Methods used by RenderFrameParent to set fields stored here.
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void SetTouchSensitiveRegion(const nsRegion& aRegion)
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{
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mTouchSensitiveRegion = aRegion;
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}
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private:
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MessageLoop* mUILoop;
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RenderFrameParent* mRenderFrame;
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nsRegion mTouchSensitiveRegion;
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};
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RenderFrameParent::RenderFrameParent(nsFrameLoader* aFrameLoader,
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TextureFactoryIdentifier* aTextureFactoryIdentifier,
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uint64_t* aId,
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bool* aSuccess)
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: mLayersId(0)
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, mFrameLoader(aFrameLoader)
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, mFrameLoaderDestroyed(false)
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, mAsyncPanZoomEnabled(false)
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{
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*aId = 0;
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*aSuccess = false;
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if (!mFrameLoader) {
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return;
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}
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RefPtr<LayerManager> lm = GetFrom(mFrameLoader);
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mAsyncPanZoomEnabled = lm && lm->AsyncPanZoomEnabled();
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// Perhaps the document containing this frame currently has no presentation?
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if (lm && lm->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
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*aTextureFactoryIdentifier =
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static_cast<ClientLayerManager*>(lm.get())->GetTextureFactoryIdentifier();
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} else {
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*aTextureFactoryIdentifier = TextureFactoryIdentifier();
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}
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if (XRE_IsParentProcess()) {
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// Our remote frame will push layers updates to the compositor,
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// and we'll keep an indirect reference to that tree.
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*aId = mLayersId = CompositorParent::AllocateLayerTreeId();
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if (lm && lm->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
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ClientLayerManager *clientManager =
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static_cast<ClientLayerManager*>(lm.get());
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clientManager->GetRemoteRenderer()->SendNotifyChildCreated(mLayersId);
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}
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if (mAsyncPanZoomEnabled) {
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mContentController = new RemoteContentController(this);
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CompositorParent::SetControllerForLayerTree(mLayersId, mContentController);
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}
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} else if (XRE_IsContentProcess()) {
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ContentChild::GetSingleton()->SendAllocateLayerTreeId(aId);
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mLayersId = *aId;
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CompositorChild::Get()->SendNotifyChildCreated(mLayersId);
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}
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*aSuccess = true;
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}
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APZCTreeManager*
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RenderFrameParent::GetApzcTreeManager()
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{
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// We can't get a ref to the APZCTreeManager until after the child is
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// created and the static getter knows which CompositorParent is
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// instantiated with this layers ID. That's why try to fetch it when
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// we first need it and cache the result.
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// Note: the IsParentProcess check is to deal with nested content process
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// scenarios, since in those cases we can have RenderFrameParent instances
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// in a child process, but the APZC machinery is not in that process. Bug
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// 1020199 should fix this more comprehensively.
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if (!mApzcTreeManager && mAsyncPanZoomEnabled && XRE_IsParentProcess()) {
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mApzcTreeManager = CompositorParent::GetAPZCTreeManager(mLayersId);
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}
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return mApzcTreeManager.get();
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}
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RenderFrameParent::~RenderFrameParent()
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{}
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void
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RenderFrameParent::Destroy()
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{
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mFrameLoaderDestroyed = true;
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}
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already_AddRefed<Layer>
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RenderFrameParent::BuildLayer(nsDisplayListBuilder* aBuilder,
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nsIFrame* aFrame,
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LayerManager* aManager,
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const nsIntRect& aVisibleRect,
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nsDisplayItem* aItem,
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const ContainerLayerParameters& aContainerParameters)
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{
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MOZ_ASSERT(aFrame,
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"makes no sense to have a shadow tree without a frame");
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MOZ_ASSERT(!mContainer ||
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IsTempLayerManager(aManager) ||
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mContainer->Manager() == aManager,
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"retaining manager changed out from under us ... HELP!");
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if (IsTempLayerManager(aManager) ||
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(mContainer && mContainer->Manager() != aManager)) {
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// This can happen if aManager is a "temporary" manager, or if the
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// widget's layer manager changed out from under us. We need to
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// FIXME handle the former case somehow, probably with an API to
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// draw a manager's subtree. The latter is bad bad bad, but the the
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// MOZ_ASSERT() above will flag it. Returning nullptr here will just
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// cause the shadow subtree not to be rendered.
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if (!aContainerParameters.mForEventsOnly) {
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NS_WARNING("Remote iframe not rendered");
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}
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return nullptr;
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}
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uint64_t id = GetLayerTreeId();
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if (!id) {
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return nullptr;
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}
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RefPtr<Layer> layer =
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(aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, aItem));
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if (!layer) {
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layer = aManager->CreateRefLayer();
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}
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if (!layer) {
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// Probably a temporary layer manager that doesn't know how to
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// use ref layers.
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return nullptr;
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}
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static_cast<RefLayer*>(layer.get())->SetReferentId(id);
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nsIntPoint offset = GetContentRectLayerOffset(aFrame, aBuilder);
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// We can only have an offset if we're a child of an inactive
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// container, but our display item is LAYER_ACTIVE_FORCE which
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// forces all layers above to be active.
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MOZ_ASSERT(aContainerParameters.mOffset == nsIntPoint());
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gfx::Matrix4x4 m = gfx::Matrix4x4::Translation(offset.x, offset.y, 0.0);
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// Remote content can't be repainted by us, so we multiply down
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// the resolution that our container expects onto our container.
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m.PreScale(aContainerParameters.mXScale, aContainerParameters.mYScale, 1.0);
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layer->SetBaseTransform(m);
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return layer.forget();
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}
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void
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RenderFrameParent::OwnerContentChanged(nsIContent* aContent)
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{
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MOZ_ASSERT(!mFrameLoader || mFrameLoader->GetOwnerContent() == aContent,
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"Don't build new map if owner is same!");
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RefPtr<LayerManager> lm = mFrameLoader ? GetFrom(mFrameLoader) : nullptr;
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// Perhaps the document containing this frame currently has no presentation?
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if (lm && lm->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
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ClientLayerManager *clientManager =
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static_cast<ClientLayerManager*>(lm.get());
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clientManager->GetRemoteRenderer()->SendAdoptChild(mLayersId);
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}
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// The APZCTreeManager associated with this RenderFrameParent may have changed
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// so reset it and let GetApzcTreeManager() pick it up again.
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mApzcTreeManager = nullptr;
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}
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void
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RenderFrameParent::ActorDestroy(ActorDestroyReason why)
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{
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if (mLayersId != 0) {
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if (XRE_IsContentProcess()) {
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ContentChild::GetSingleton()->SendDeallocateLayerTreeId(mLayersId);
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} else {
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CompositorParent::DeallocateLayerTreeId(mLayersId);
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}
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if (mContentController) {
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// Stop our content controller from requesting repaints of our
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// content.
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mContentController->ClearRenderFrame();
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// TODO: notify the compositor?
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}
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}
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mFrameLoader = nullptr;
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}
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bool
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RenderFrameParent::RecvNotifyCompositorTransaction()
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{
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TriggerRepaint();
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return true;
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}
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bool
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RenderFrameParent::RecvUpdateHitRegion(const nsRegion& aRegion)
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{
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mTouchRegion = aRegion;
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if (mContentController) {
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// Tell the content controller about the touch-sensitive region, so
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// that it can provide it to APZ. This is required for APZ to do
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// correct hit testing for a remote 'mozpasspointerevents' iframe
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// until bug 928833 is fixed.
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mContentController->SetTouchSensitiveRegion(aRegion);
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}
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return true;
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}
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void
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RenderFrameParent::TriggerRepaint()
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{
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nsIFrame* docFrame = mFrameLoader->GetPrimaryFrameOfOwningContent();
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if (!docFrame) {
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// Bad, but nothing we can do about it (XXX/cjones: or is there?
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// maybe bug 589337?). When the new frame is created, we'll
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// probably still be the current render frame and will get to draw
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// our content then. Or, we're shutting down and this update goes
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// to /dev/null.
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return;
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}
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docFrame->InvalidateLayer(nsDisplayItem::TYPE_REMOTE);
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}
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uint64_t
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RenderFrameParent::GetLayerTreeId() const
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{
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return mLayersId;
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}
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void
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RenderFrameParent::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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nsSubDocumentFrame* aFrame,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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// We're the subdoc for <browser remote="true"> and it has
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// painted content. Display its shadow layer tree.
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DisplayListClipState::AutoSaveRestore clipState(aBuilder);
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nsPoint offset = aBuilder->ToReferenceFrame(aFrame);
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nsRect bounds = aFrame->EnsureInnerView()->GetBounds() + offset;
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clipState.ClipContentDescendants(bounds);
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aLists.Content()->AppendToTop(
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new (aBuilder) nsDisplayRemote(aBuilder, aFrame, this));
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}
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void
|
|
RenderFrameParent::ZoomToRect(uint32_t aPresShellId, ViewID aViewId,
|
|
const CSSRect& aRect)
|
|
{
|
|
if (GetApzcTreeManager()) {
|
|
GetApzcTreeManager()->ZoomToRect(ScrollableLayerGuid(mLayersId, aPresShellId, aViewId),
|
|
aRect);
|
|
}
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::ContentReceivedInputBlock(const ScrollableLayerGuid& aGuid,
|
|
uint64_t aInputBlockId,
|
|
bool aPreventDefault)
|
|
{
|
|
if (aGuid.mLayersId != mLayersId) {
|
|
// Guard against bad data from hijacked child processes
|
|
NS_ERROR("Unexpected layers id in ContentReceivedInputBlock; dropping message...");
|
|
return;
|
|
}
|
|
if (GetApzcTreeManager()) {
|
|
APZThreadUtils::RunOnControllerThread(NewRunnableMethod(
|
|
GetApzcTreeManager(), &APZCTreeManager::ContentReceivedInputBlock,
|
|
aInputBlockId, aPreventDefault));
|
|
}
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::SetTargetAPZC(uint64_t aInputBlockId,
|
|
const nsTArray<ScrollableLayerGuid>& aTargets)
|
|
{
|
|
for (size_t i = 0; i < aTargets.Length(); i++) {
|
|
if (aTargets[i].mLayersId != mLayersId) {
|
|
// Guard against bad data from hijacked child processes
|
|
NS_ERROR("Unexpected layers id in SetTargetAPZC; dropping message...");
|
|
return;
|
|
}
|
|
}
|
|
if (GetApzcTreeManager()) {
|
|
// need a local var to disambiguate between the SetTargetAPZC overloads.
|
|
void (APZCTreeManager::*setTargetApzcFunc)(uint64_t, const nsTArray<ScrollableLayerGuid>&)
|
|
= &APZCTreeManager::SetTargetAPZC;
|
|
APZThreadUtils::RunOnControllerThread(NewRunnableMethod(
|
|
GetApzcTreeManager(), setTargetApzcFunc,
|
|
aInputBlockId, aTargets));
|
|
}
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::SetAllowedTouchBehavior(uint64_t aInputBlockId,
|
|
const nsTArray<TouchBehaviorFlags>& aFlags)
|
|
{
|
|
if (GetApzcTreeManager()) {
|
|
APZThreadUtils::RunOnControllerThread(NewRunnableMethod(
|
|
GetApzcTreeManager(), &APZCTreeManager::SetAllowedTouchBehavior,
|
|
aInputBlockId, aFlags));
|
|
}
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::UpdateZoomConstraints(uint32_t aPresShellId,
|
|
ViewID aViewId,
|
|
const Maybe<ZoomConstraints>& aConstraints)
|
|
{
|
|
if (GetApzcTreeManager()) {
|
|
GetApzcTreeManager()->UpdateZoomConstraints(ScrollableLayerGuid(mLayersId, aPresShellId, aViewId),
|
|
aConstraints);
|
|
}
|
|
}
|
|
|
|
bool
|
|
RenderFrameParent::HitTest(const nsRect& aRect)
|
|
{
|
|
return mTouchRegion.Contains(aRect);
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::StartScrollbarDrag(const AsyncDragMetrics& aDragMetrics)
|
|
{
|
|
if (GetApzcTreeManager()) {
|
|
uint64_t layersId = GetLayersId();
|
|
ScrollableLayerGuid guid(layersId, aDragMetrics.mPresShellId,
|
|
aDragMetrics.mViewId);
|
|
|
|
APZThreadUtils::RunOnControllerThread(
|
|
NewRunnableMethod(GetApzcTreeManager(),
|
|
&APZCTreeManager::StartScrollbarDrag,
|
|
guid, aDragMetrics));
|
|
}
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::GetTextureFactoryIdentifier(TextureFactoryIdentifier* aTextureFactoryIdentifier)
|
|
{
|
|
RefPtr<LayerManager> lm = mFrameLoader ? GetFrom(mFrameLoader) : nullptr;
|
|
// Perhaps the document containing this frame currently has no presentation?
|
|
if (lm && lm->GetBackendType() == LayersBackend::LAYERS_CLIENT) {
|
|
*aTextureFactoryIdentifier =
|
|
static_cast<ClientLayerManager*>(lm.get())->GetTextureFactoryIdentifier();
|
|
} else {
|
|
*aTextureFactoryIdentifier = TextureFactoryIdentifier();
|
|
}
|
|
}
|
|
|
|
void
|
|
RenderFrameParent::TakeFocusForClickFromTap()
|
|
{
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (!fm) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsIContent> owner = mFrameLoader->GetOwnerContent();
|
|
if (!owner) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsIDOMElement> element = do_QueryInterface(owner);
|
|
if (!element) {
|
|
return;
|
|
}
|
|
fm->SetFocus(element, nsIFocusManager::FLAG_BYMOUSE |
|
|
nsIFocusManager::FLAG_BYTOUCH |
|
|
nsIFocusManager::FLAG_NOSCROLL);
|
|
}
|
|
|
|
} // namespace layout
|
|
} // namespace mozilla
|
|
|
|
nsDisplayRemote::nsDisplayRemote(nsDisplayListBuilder* aBuilder,
|
|
nsSubDocumentFrame* aFrame,
|
|
RenderFrameParent* aRemoteFrame)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mRemoteFrame(aRemoteFrame)
|
|
, mEventRegionsOverride(EventRegionsOverride::NoOverride)
|
|
{
|
|
if (aBuilder->IsBuildingLayerEventRegions()) {
|
|
bool frameIsPointerEventsNone = !aFrame->PassPointerEventsToChildren()
|
|
&& (aFrame->StyleVisibility()->GetEffectivePointerEvents(aFrame) == NS_STYLE_POINTER_EVENTS_NONE);
|
|
if (aBuilder->IsInsidePointerEventsNoneDoc() || frameIsPointerEventsNone) {
|
|
mEventRegionsOverride |= EventRegionsOverride::ForceEmptyHitRegion;
|
|
}
|
|
if (nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents(aFrame->PresContext()->PresShell())) {
|
|
mEventRegionsOverride |= EventRegionsOverride::ForceDispatchToContent;
|
|
}
|
|
}
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayRemote::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
nsIntRect visibleRect = GetVisibleRect().ToNearestPixels(appUnitsPerDevPixel);
|
|
visibleRect += aContainerParameters.mOffset;
|
|
RefPtr<Layer> layer = mRemoteFrame->BuildLayer(aBuilder, mFrame, aManager, visibleRect, this, aContainerParameters);
|
|
if (layer && layer->AsContainerLayer()) {
|
|
layer->AsContainerLayer()->SetEventRegionsOverride(mEventRegionsOverride);
|
|
}
|
|
return layer.forget();
|
|
}
|
|
|
|
void
|
|
nsDisplayRemote::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
|
|
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
if (mRemoteFrame->HitTest(aRect)) {
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
}
|
|
|