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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /gfx/layers/composite/CanvasLayerComposite.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/layers/composite/CanvasLayerComposite.cpp')
-rw-r--r--gfx/layers/composite/CanvasLayerComposite.cpp166
1 files changed, 166 insertions, 0 deletions
diff --git a/gfx/layers/composite/CanvasLayerComposite.cpp b/gfx/layers/composite/CanvasLayerComposite.cpp
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+++ b/gfx/layers/composite/CanvasLayerComposite.cpp
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+/* -*- Mode: C++; tab-width: 20; 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 "CanvasLayerComposite.h"
+#include "composite/CompositableHost.h" // for CompositableHost
+#include "gfx2DGlue.h" // for ToFilter
+#include "gfxEnv.h" // for gfxEnv, etc
+#include "mozilla/gfx/Matrix.h" // for Matrix4x4
+#include "mozilla/gfx/Point.h" // for Point
+#include "mozilla/gfx/Rect.h" // for Rect
+#include "mozilla/layers/Compositor.h" // for Compositor
+#include "mozilla/layers/Effects.h" // for EffectChain
+#include "mozilla/mozalloc.h" // for operator delete
+#include "nsAString.h"
+#include "mozilla/RefPtr.h" // for nsRefPtr
+#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc
+#include "nsString.h" // for nsAutoCString
+
+namespace mozilla {
+namespace layers {
+
+using namespace mozilla::gfx;
+
+CanvasLayerComposite::CanvasLayerComposite(LayerManagerComposite* aManager)
+ : CanvasLayer(aManager, nullptr)
+ , LayerComposite(aManager)
+ , mCompositableHost(nullptr)
+{
+ MOZ_COUNT_CTOR(CanvasLayerComposite);
+ mImplData = static_cast<LayerComposite*>(this);
+}
+
+CanvasLayerComposite::~CanvasLayerComposite()
+{
+ MOZ_COUNT_DTOR(CanvasLayerComposite);
+
+ CleanupResources();
+}
+
+bool
+CanvasLayerComposite::SetCompositableHost(CompositableHost* aHost)
+{
+ switch (aHost->GetType()) {
+ case CompositableType::IMAGE:
+ mCompositableHost = aHost;
+ return true;
+ default:
+ return false;
+ }
+
+}
+
+Layer*
+CanvasLayerComposite::GetLayer()
+{
+ return this;
+}
+
+void
+CanvasLayerComposite::SetLayerManager(LayerManagerComposite* aManager)
+{
+ LayerComposite::SetLayerManager(aManager);
+ mManager = aManager;
+ if (mCompositableHost && mCompositor) {
+ mCompositableHost->SetCompositor(mCompositor);
+ }
+}
+
+LayerRenderState
+CanvasLayerComposite::GetRenderState()
+{
+ if (mDestroyed || !mCompositableHost || !mCompositableHost->IsAttached()) {
+ return LayerRenderState();
+ }
+ return mCompositableHost->GetRenderState();
+}
+
+void
+CanvasLayerComposite::RenderLayer(const IntRect& aClipRect)
+{
+ if (!mCompositableHost || !mCompositableHost->IsAttached()) {
+ return;
+ }
+
+ mCompositor->MakeCurrent();
+
+#ifdef MOZ_DUMP_PAINTING
+ if (gfxEnv::DumpCompositorTextures()) {
+ RefPtr<gfx::DataSourceSurface> surf = mCompositableHost->GetAsSurface();
+ if (surf) {
+ WriteSnapshotToDumpFile(this, surf);
+ }
+ }
+#endif
+
+ RenderWithAllMasks(this, mCompositor, aClipRect,
+ [&](EffectChain& effectChain, const IntRect& clipRect) {
+ mCompositableHost->Composite(this, effectChain,
+ GetEffectiveOpacity(),
+ GetEffectiveTransform(),
+ GetSamplingFilter(),
+ clipRect);
+ });
+
+ mCompositableHost->BumpFlashCounter();
+}
+
+CompositableHost*
+CanvasLayerComposite::GetCompositableHost()
+{
+ if (mCompositableHost && mCompositableHost->IsAttached()) {
+ return mCompositableHost.get();
+ }
+
+ return nullptr;
+}
+
+void
+CanvasLayerComposite::CleanupResources()
+{
+ if (mCompositableHost) {
+ mCompositableHost->Detach(this);
+ }
+ mCompositableHost = nullptr;
+}
+
+gfx::SamplingFilter
+CanvasLayerComposite::GetSamplingFilter()
+{
+ gfx::SamplingFilter filter = mSamplingFilter;
+#ifdef ANDROID
+ // Bug 691354
+ // Using the LINEAR filter we get unexplained artifacts.
+ // Use NEAREST when no scaling is required.
+ Matrix matrix;
+ bool is2D = GetEffectiveTransform().Is2D(&matrix);
+ if (is2D && !ThebesMatrix(matrix).HasNonTranslationOrFlip()) {
+ filter = SamplingFilter::POINT;
+ }
+#endif
+ return filter;
+}
+
+void
+CanvasLayerComposite::GenEffectChain(EffectChain& aEffect)
+{
+ aEffect.mLayerRef = this;
+ aEffect.mPrimaryEffect = mCompositableHost->GenEffect(GetSamplingFilter());
+}
+
+void
+CanvasLayerComposite::PrintInfo(std::stringstream& aStream, const char* aPrefix)
+{
+ CanvasLayer::PrintInfo(aStream, aPrefix);
+ aStream << "\n";
+ if (mCompositableHost && mCompositableHost->IsAttached()) {
+ nsAutoCString pfx(aPrefix);
+ pfx += " ";
+ mCompositableHost->PrintInfo(aStream, pfx.get());
+ }
+}
+
+} // namespace layers
+} // namespace mozilla