1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/composite/ImageLayerComposite.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,177 @@
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 "ImageLayerComposite.h"
1.10 +#include "CompositableHost.h" // for CompositableHost
1.11 +#include "Layers.h" // for WriteSnapshotToDumpFile, etc
1.12 +#include "gfx2DGlue.h" // for ToFilter, ToMatrix4x4
1.13 +#include "gfxRect.h" // for gfxRect
1.14 +#include "gfxUtils.h" // for gfxUtils, etc
1.15 +#include "mozilla/Assertions.h" // for MOZ_ASSERT, etc
1.16 +#include "mozilla/gfx/Matrix.h" // for Matrix4x4
1.17 +#include "mozilla/gfx/Point.h" // for IntSize, Point
1.18 +#include "mozilla/gfx/Rect.h" // for Rect
1.19 +#include "mozilla/layers/Compositor.h" // for Compositor
1.20 +#include "mozilla/layers/Effects.h" // for EffectChain
1.21 +#include "mozilla/layers/TextureHost.h" // for TextureHost, etc
1.22 +#include "mozilla/mozalloc.h" // for operator delete
1.23 +#include "nsAString.h"
1.24 +#include "nsAutoPtr.h" // for nsRefPtr
1.25 +#include "nsDebug.h" // for NS_ASSERTION
1.26 +#include "nsISupportsImpl.h" // for MOZ_COUNT_CTOR, etc
1.27 +#include "nsPoint.h" // for nsIntPoint
1.28 +#include "nsRect.h" // for nsIntRect
1.29 +#include "nsString.h" // for nsAutoCString
1.30 +
1.31 +using namespace mozilla::gfx;
1.32 +
1.33 +namespace mozilla {
1.34 +namespace layers {
1.35 +
1.36 +ImageLayerComposite::ImageLayerComposite(LayerManagerComposite* aManager)
1.37 + : ImageLayer(aManager, nullptr)
1.38 + , LayerComposite(aManager)
1.39 + , mImageHost(nullptr)
1.40 +{
1.41 + MOZ_COUNT_CTOR(ImageLayerComposite);
1.42 + mImplData = static_cast<LayerComposite*>(this);
1.43 +}
1.44 +
1.45 +ImageLayerComposite::~ImageLayerComposite()
1.46 +{
1.47 + MOZ_COUNT_DTOR(ImageLayerComposite);
1.48 + MOZ_ASSERT(mDestroyed);
1.49 +
1.50 + CleanupResources();
1.51 +}
1.52 +
1.53 +bool
1.54 +ImageLayerComposite::SetCompositableHost(CompositableHost* aHost)
1.55 +{
1.56 + switch (aHost->GetType()) {
1.57 + case BUFFER_IMAGE_SINGLE:
1.58 + case BUFFER_IMAGE_BUFFERED:
1.59 + case COMPOSITABLE_IMAGE:
1.60 + mImageHost = aHost;
1.61 + return true;
1.62 + default:
1.63 + return false;
1.64 + }
1.65 +}
1.66 +
1.67 +void
1.68 +ImageLayerComposite::Disconnect()
1.69 +{
1.70 + Destroy();
1.71 +}
1.72 +
1.73 +LayerRenderState
1.74 +ImageLayerComposite::GetRenderState()
1.75 +{
1.76 + if (mImageHost && mImageHost->IsAttached()) {
1.77 + return mImageHost->GetRenderState();
1.78 + }
1.79 + return LayerRenderState();
1.80 +}
1.81 +
1.82 +Layer*
1.83 +ImageLayerComposite::GetLayer()
1.84 +{
1.85 + return this;
1.86 +}
1.87 +
1.88 +void
1.89 +ImageLayerComposite::RenderLayer(const nsIntRect& aClipRect)
1.90 +{
1.91 + if (!mImageHost || !mImageHost->IsAttached()) {
1.92 + return;
1.93 + }
1.94 +
1.95 +#ifdef MOZ_DUMP_PAINTING
1.96 + if (gfxUtils::sDumpPainting) {
1.97 + RefPtr<gfx::DataSourceSurface> surf = mImageHost->GetAsSurface();
1.98 + WriteSnapshotToDumpFile(this, surf);
1.99 + }
1.100 +#endif
1.101 +
1.102 + mCompositor->MakeCurrent();
1.103 +
1.104 + EffectChain effectChain(this);
1.105 + LayerManagerComposite::AutoAddMaskEffect autoMaskEffect(mMaskLayer, effectChain);
1.106 +
1.107 + gfx::Rect clipRect(aClipRect.x, aClipRect.y, aClipRect.width, aClipRect.height);
1.108 + mImageHost->SetCompositor(mCompositor);
1.109 + mImageHost->Composite(effectChain,
1.110 + GetEffectiveOpacity(),
1.111 + GetEffectiveTransform(),
1.112 + gfx::ToFilter(mFilter),
1.113 + clipRect);
1.114 + mImageHost->BumpFlashCounter();
1.115 +}
1.116 +
1.117 +void
1.118 +ImageLayerComposite::ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface)
1.119 +{
1.120 + gfx::Matrix4x4 local = GetLocalTransform();
1.121 +
1.122 + // Snap image edges to pixel boundaries
1.123 + gfxRect sourceRect(0, 0, 0, 0);
1.124 + if (mImageHost &&
1.125 + mImageHost->IsAttached() &&
1.126 + mImageHost->GetAsTextureHost()) {
1.127 + IntSize size = mImageHost->GetAsTextureHost()->GetSize();
1.128 + sourceRect.SizeTo(size.width, size.height);
1.129 + if (mScaleMode != ScaleMode::SCALE_NONE &&
1.130 + sourceRect.width != 0.0 && sourceRect.height != 0.0) {
1.131 + NS_ASSERTION(mScaleMode == ScaleMode::STRETCH,
1.132 + "No other scalemodes than stretch and none supported yet.");
1.133 + local.Scale(mScaleToSize.width / sourceRect.width,
1.134 + mScaleToSize.height / sourceRect.height, 1.0);
1.135 + }
1.136 + }
1.137 + // Snap our local transform first, and snap the inherited transform as well.
1.138 + // This makes our snapping equivalent to what would happen if our content
1.139 + // was drawn into a ThebesLayer (gfxContext would snap using the local
1.140 + // transform, then we'd snap again when compositing the ThebesLayer).
1.141 + mEffectiveTransform =
1.142 + SnapTransform(local, sourceRect, nullptr) *
1.143 + SnapTransformTranslation(aTransformToSurface, nullptr);
1.144 + ComputeEffectiveTransformForMaskLayer(aTransformToSurface);
1.145 +}
1.146 +
1.147 +CompositableHost*
1.148 +ImageLayerComposite::GetCompositableHost()
1.149 +{
1.150 + if (mImageHost && mImageHost->IsAttached()) {
1.151 + return mImageHost.get();
1.152 + }
1.153 +
1.154 + return nullptr;
1.155 +}
1.156 +
1.157 +void
1.158 +ImageLayerComposite::CleanupResources()
1.159 +{
1.160 + if (mImageHost) {
1.161 + mImageHost->Detach(this);
1.162 + }
1.163 + mImageHost = nullptr;
1.164 +}
1.165 +
1.166 +nsACString&
1.167 +ImageLayerComposite::PrintInfo(nsACString& aTo, const char* aPrefix)
1.168 +{
1.169 + ImageLayer::PrintInfo(aTo, aPrefix);
1.170 + aTo += "\n";
1.171 + if (mImageHost && mImageHost->IsAttached()) {
1.172 + nsAutoCString pfx(aPrefix);
1.173 + pfx += " ";
1.174 + mImageHost->PrintInfo(aTo, pfx.get());
1.175 + }
1.176 + return aTo;
1.177 +}
1.178 +
1.179 +} /* layers */
1.180 +} /* mozilla */
