зеркало из https://github.com/mozilla/gecko-dev.git
98 строки
2.8 KiB
C++
98 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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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#ifndef GFX_IMAGELAYER_H
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#define GFX_IMAGELAYER_H
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#include "Layers.h" // for Layer, etc
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#include "mozilla/gfx/BaseSize.h" // for BaseSize
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#include "mozilla/gfx/Point.h" // for IntSize
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#include "mozilla/layers/LayersTypes.h"
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#include "nsAutoPtr.h" // for nsRefPtr
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#include "nscore.h" // for nsACString
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namespace mozilla {
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namespace layers {
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class ImageContainer;
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namespace layerscope {
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class LayersPacket;
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} // namespace layerscope
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/**
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* A Layer which renders an Image.
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*/
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class ImageLayer : public Layer {
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public:
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/**
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* CONSTRUCTION PHASE ONLY
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* Set the ImageContainer. aContainer must have the same layer manager
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* as this layer.
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*/
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virtual void SetContainer(ImageContainer* aContainer);
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/**
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* CONSTRUCTION PHASE ONLY
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* Set the filter used to resample this image if necessary.
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*/
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void SetSamplingFilter(gfx::SamplingFilter aSamplingFilter)
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{
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if (mSamplingFilter != aSamplingFilter) {
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MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this));
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mSamplingFilter = aSamplingFilter;
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Mutated();
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}
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}
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/**
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* CONSTRUCTION PHASE ONLY
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* Set the size to scale the image to and the mode at which to scale.
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*/
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void SetScaleToSize(const gfx::IntSize &aSize, ScaleMode aMode)
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{
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if (mScaleToSize != aSize || mScaleMode != aMode) {
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mScaleToSize = aSize;
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mScaleMode = aMode;
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Mutated();
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}
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}
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ImageContainer* GetContainer() { return mContainer; }
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gfx::SamplingFilter GetSamplingFilter() { return mSamplingFilter; }
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const gfx::IntSize& GetScaleToSize() { return mScaleToSize; }
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ScaleMode GetScaleMode() { return mScaleMode; }
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MOZ_LAYER_DECL_NAME("ImageLayer", TYPE_IMAGE)
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virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) override;
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virtual const gfx::Matrix4x4& GetEffectiveTransformForBuffer() const override
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{
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return mEffectiveTransformForBuffer;
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}
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virtual ImageLayer* AsImageLayer() override { return this; }
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protected:
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ImageLayer(LayerManager* aManager, void* aImplData);
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~ImageLayer();
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virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
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virtual void DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent) override;
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RefPtr<ImageContainer> mContainer;
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gfx::SamplingFilter mSamplingFilter;
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gfx::IntSize mScaleToSize;
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ScaleMode mScaleMode;
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gfx::Matrix4x4 mEffectiveTransformForBuffer;
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};
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} // namespace layers
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} // namespace mozilla
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#endif /* GFX_IMAGELAYER_H */
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