mirror of
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135 lines
3.6 KiB
C++
135 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 "CanvasLayerComposite.h"
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#include "composite/CompositableHost.h" // for CompositableHost
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#include "gfx2DGlue.h" // for ToFilter, ToMatrix4x4
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#include "GraphicsFilter.h" // for GraphicsFilter
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#include "gfxUtils.h" // for gfxUtils, etc
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#include "mozilla/gfx/Matrix.h" // for Matrix4x4
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#include "mozilla/gfx/Point.h" // for Point
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#include "mozilla/gfx/Rect.h" // for Rect
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#include "mozilla/layers/Compositor.h" // for Compositor
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#include "mozilla/layers/Effects.h" // for EffectChain
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#include "mozilla/mozalloc.h" // for operator delete
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#include "nsAString.h"
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#include "nsAutoPtr.h" // for nsRefPtr
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#include "nsPoint.h" // for nsIntPoint
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#include "nsString.h" // for nsAutoCString
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#include "nsTraceRefcnt.h" // for MOZ_COUNT_CTOR, etc
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using namespace mozilla;
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using namespace mozilla::layers;
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using namespace mozilla::gfx;
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CanvasLayerComposite::CanvasLayerComposite(LayerManagerComposite* aManager)
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: CanvasLayer(aManager, nullptr)
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, LayerComposite(aManager)
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, mImageHost(nullptr)
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{
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MOZ_COUNT_CTOR(CanvasLayerComposite);
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mImplData = static_cast<LayerComposite*>(this);
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}
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CanvasLayerComposite::~CanvasLayerComposite()
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{
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MOZ_COUNT_DTOR(CanvasLayerComposite);
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CleanupResources();
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}
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void
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CanvasLayerComposite::SetCompositableHost(CompositableHost* aHost) {
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mImageHost = aHost;
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}
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Layer*
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CanvasLayerComposite::GetLayer()
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{
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return this;
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}
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LayerRenderState
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CanvasLayerComposite::GetRenderState()
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{
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if (mDestroyed || !mImageHost || !mImageHost->IsAttached()) {
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return LayerRenderState();
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}
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return mImageHost->GetRenderState();
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}
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void
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CanvasLayerComposite::RenderLayer(const nsIntRect& aClipRect)
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{
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if (!mImageHost || !mImageHost->IsAttached()) {
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return;
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}
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mCompositor->MakeCurrent();
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#ifdef MOZ_DUMP_PAINTING
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if (gfxUtils::sDumpPainting) {
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RefPtr<gfx::DataSourceSurface> surf = mImageHost->GetAsSurface();
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WriteSnapshotToDumpFile(this, surf);
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}
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#endif
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GraphicsFilter filter = mFilter;
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#ifdef ANDROID
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// Bug 691354
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// Using the LINEAR filter we get unexplained artifacts.
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// Use NEAREST when no scaling is required.
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Matrix matrix;
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bool is2D = GetEffectiveTransform().Is2D(&matrix);
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if (is2D && !ThebesMatrix(matrix).HasNonTranslationOrFlip()) {
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filter = GraphicsFilter::FILTER_NEAREST;
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}
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#endif
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EffectChain effectChain(this);
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LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
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gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
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mImageHost->Composite(effectChain,
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GetEffectiveOpacity(),
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GetEffectiveTransform(),
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gfx::ToFilter(filter),
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clipRect);
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}
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CompositableHost*
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CanvasLayerComposite::GetCompositableHost()
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{
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if ( mImageHost && mImageHost->IsAttached()) {
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return mImageHost.get();
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}
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return nullptr;
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}
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void
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CanvasLayerComposite::CleanupResources()
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{
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if (mImageHost) {
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mImageHost->Detach(this);
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}
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mImageHost = nullptr;
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}
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nsACString&
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CanvasLayerComposite::PrintInfo(nsACString& aTo, const char* aPrefix)
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{
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CanvasLayer::PrintInfo(aTo, aPrefix);
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aTo += "\n";
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if (mImageHost && mImageHost->IsAttached()) {
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nsAutoCString pfx(aPrefix);
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pfx += " ";
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mImageHost->PrintInfo(aTo, pfx.get());
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}
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return aTo;
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}
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