1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/composite/CanvasLayerComposite.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,145 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "CanvasLayerComposite.h"
1.10 +#include "composite/CompositableHost.h" // for CompositableHost
1.11 +#include "gfx2DGlue.h" // for ToFilter, ToMatrix4x4
1.12 +#include "GraphicsFilter.h" // for GraphicsFilter
1.13 +#include "gfxUtils.h" // for gfxUtils, etc
1.14 +#include "mozilla/gfx/Matrix.h" // for Matrix4x4
1.15 +#include "mozilla/gfx/Point.h" // for Point
1.16 +#include "mozilla/gfx/Rect.h" // for Rect
1.17 +#include "mozilla/layers/Compositor.h" // for Compositor
1.18 +#include "mozilla/layers/Effects.h" // for EffectChain
1.19 +#include "mozilla/mozalloc.h" // for operator delete
1.20 +#include "nsAString.h"
1.21 +#include "nsAutoPtr.h" // for nsRefPtr
1.22 +#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc
1.23 +#include "nsPoint.h" // for nsIntPoint
1.24 +#include "nsString.h" // for nsAutoCString
1.25 +
1.26 +using namespace mozilla;
1.27 +using namespace mozilla::layers;
1.28 +using namespace mozilla::gfx;
1.29 +
1.30 +CanvasLayerComposite::CanvasLayerComposite(LayerManagerComposite* aManager)
1.31 + : CanvasLayer(aManager, nullptr)
1.32 + , LayerComposite(aManager)
1.33 + , mImageHost(nullptr)
1.34 +{
1.35 + MOZ_COUNT_CTOR(CanvasLayerComposite);
1.36 + mImplData = static_cast<LayerComposite*>(this);
1.37 +}
1.38 +
1.39 +CanvasLayerComposite::~CanvasLayerComposite()
1.40 +{
1.41 + MOZ_COUNT_DTOR(CanvasLayerComposite);
1.42 +
1.43 + CleanupResources();
1.44 +}
1.45 +
1.46 +bool
1.47 +CanvasLayerComposite::SetCompositableHost(CompositableHost* aHost)
1.48 +{
1.49 + switch (aHost->GetType()) {
1.50 + case BUFFER_IMAGE_SINGLE:
1.51 + case BUFFER_IMAGE_BUFFERED:
1.52 + case COMPOSITABLE_IMAGE:
1.53 + mImageHost = aHost;
1.54 + return true;
1.55 + default:
1.56 + return false;
1.57 + }
1.58 +
1.59 +}
1.60 +
1.61 +Layer*
1.62 +CanvasLayerComposite::GetLayer()
1.63 +{
1.64 + return this;
1.65 +}
1.66 +
1.67 +LayerRenderState
1.68 +CanvasLayerComposite::GetRenderState()
1.69 +{
1.70 + if (mDestroyed || !mImageHost || !mImageHost->IsAttached()) {
1.71 + return LayerRenderState();
1.72 + }
1.73 + return mImageHost->GetRenderState();
1.74 +}
1.75 +
1.76 +void
1.77 +CanvasLayerComposite::RenderLayer(const nsIntRect& aClipRect)
1.78 +{
1.79 + if (!mImageHost || !mImageHost->IsAttached()) {
1.80 + return;
1.81 + }
1.82 +
1.83 + mCompositor->MakeCurrent();
1.84 +
1.85 +#ifdef MOZ_DUMP_PAINTING
1.86 + if (gfxUtils::sDumpPainting) {
1.87 + RefPtr<gfx::DataSourceSurface> surf = mImageHost->GetAsSurface();
1.88 + WriteSnapshotToDumpFile(this, surf);
1.89 + }
1.90 +#endif
1.91 +
1.92 + GraphicsFilter filter = mFilter;
1.93 +#ifdef ANDROID
1.94 + // Bug 691354
1.95 + // Using the LINEAR filter we get unexplained artifacts.
1.96 + // Use NEAREST when no scaling is required.
1.97 + Matrix matrix;
1.98 + bool is2D = GetEffectiveTransform().Is2D(&matrix);
1.99 + if (is2D && !ThebesMatrix(matrix).HasNonTranslationOrFlip()) {
1.100 + filter = GraphicsFilter::FILTER_NEAREST;
1.101 + }
1.102 +#endif
1.103 +
1.104 + EffectChain effectChain(this);
1.105 +
1.106 + LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
1.107 + gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
1.108 +
1.109 + mImageHost->Composite(effectChain,
1.110 + GetEffectiveOpacity(),
1.111 + GetEffectiveTransform(),
1.112 + gfx::ToFilter(filter),
1.113 + clipRect);
1.114 + mImageHost->BumpFlashCounter();
1.115 +}
1.116 +
1.117 +CompositableHost*
1.118 +CanvasLayerComposite::GetCompositableHost()
1.119 +{
1.120 + if ( mImageHost && mImageHost->IsAttached()) {
1.121 + return mImageHost.get();
1.122 + }
1.123 +
1.124 + return nullptr;
1.125 +}
1.126 +
1.127 +void
1.128 +CanvasLayerComposite::CleanupResources()
1.129 +{
1.130 + if (mImageHost) {
1.131 + mImageHost->Detach(this);
1.132 + }
1.133 + mImageHost = nullptr;
1.134 +}
1.135 +
1.136 +nsACString&
1.137 +CanvasLayerComposite::PrintInfo(nsACString& aTo, const char* aPrefix)
1.138 +{
1.139 + CanvasLayer::PrintInfo(aTo, aPrefix);
1.140 + aTo += "\n";
1.141 + if (mImageHost && mImageHost->IsAttached()) {
1.142 + nsAutoCString pfx(aPrefix);
1.143 + pfx += " ";
1.144 + mImageHost->PrintInfo(aTo, pfx.get());
1.145 + }
1.146 + return aTo;
1.147 +}
1.148 +
