The Tor Browser / file comparison
comparison: gfx/layers/ImageLayers.cpp
gfx/layers/ImageLayers.cpp
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:4ad2f3abfb9e |
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| 1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "ImageLayers.h" | |
| 7 #include "ImageContainer.h" // for ImageContainer | |
| 8 #include "gfxRect.h" // for gfxRect | |
| 9 #include "nsDebug.h" // for NS_ASSERTION | |
| 10 #include "nsISupportsImpl.h" // for ImageContainer::Release, etc | |
| 11 #include "gfx2DGlue.h" | |
| 12 | |
| 13 namespace mozilla { | |
| 14 namespace layers { | |
| 15 | |
| 16 ImageLayer::ImageLayer(LayerManager* aManager, void* aImplData) | |
| 17 : Layer(aManager, aImplData), mFilter(GraphicsFilter::FILTER_GOOD) | |
| 18 , mScaleMode(ScaleMode::SCALE_NONE), mDisallowBigImage(false) | |
| 19 {} | |
| 20 | |
| 21 ImageLayer::~ImageLayer() | |
| 22 {} | |
| 23 | |
| 24 void ImageLayer::SetContainer(ImageContainer* aContainer) | |
| 25 { | |
| 26 mContainer = aContainer; | |
| 27 } | |
| 28 | |
| 29 void ImageLayer::ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) | |
| 30 { | |
| 31 gfx::Matrix4x4 local = GetLocalTransform(); | |
| 32 | |
| 33 // Snap image edges to pixel boundaries | |
| 34 gfxRect sourceRect(0, 0, 0, 0); | |
| 35 if (mContainer) { | |
| 36 sourceRect.SizeTo(gfx::ThebesIntSize(mContainer->GetCurrentSize())); | |
| 37 if (mScaleMode != ScaleMode::SCALE_NONE && | |
| 38 sourceRect.width != 0.0 && sourceRect.height != 0.0) { | |
| 39 NS_ASSERTION(mScaleMode == ScaleMode::STRETCH, | |
| 40 "No other scalemodes than stretch and none supported yet."); | |
| 41 local.Scale(mScaleToSize.width / sourceRect.width, | |
| 42 mScaleToSize.height / sourceRect.height, 1.0); | |
| 43 } | |
| 44 } | |
| 45 // Snap our local transform first, and snap the inherited transform as well. | |
| 46 // This makes our snapping equivalent to what would happen if our content | |
| 47 // was drawn into a ThebesLayer (gfxContext would snap using the local | |
| 48 // transform, then we'd snap again when compositing the ThebesLayer). | |
| 49 mEffectiveTransform = | |
| 50 SnapTransform(local, sourceRect, nullptr) * | |
| 51 SnapTransformTranslation(aTransformToSurface, nullptr); | |
| 52 ComputeEffectiveTransformForMaskLayer(aTransformToSurface); | |
| 53 } | |
| 54 | |
| 55 } | |
| 56 } |
