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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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gfx/layers/ImageLayers.h Normal file
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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GFX_IMAGELAYER_H
#define GFX_IMAGELAYER_H
#include "Layers.h" // for Layer, etc
#include "mozilla/gfx/BaseSize.h" // for BaseSize
#include "mozilla/gfx/Point.h" // for IntSize
#include "mozilla/layers/LayersTypes.h"
#include "nsAutoPtr.h" // for nsRefPtr
#include "nscore.h" // for nsACString
namespace mozilla {
namespace layers {
class ImageContainer;
namespace layerscope {
class LayersPacket;
} // namespace layerscope
/**
* A Layer which renders an Image.
*/
class ImageLayer : public Layer {
public:
/**
* CONSTRUCTION PHASE ONLY
* Set the ImageContainer. aContainer must have the same layer manager
* as this layer.
*/
virtual void SetContainer(ImageContainer* aContainer);
/**
* CONSTRUCTION PHASE ONLY
* Set the filter used to resample this image if necessary.
*/
void SetSamplingFilter(gfx::SamplingFilter aSamplingFilter)
{
if (mSamplingFilter != aSamplingFilter) {
MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this));
mSamplingFilter = aSamplingFilter;
Mutated();
}
}
/**
* CONSTRUCTION PHASE ONLY
* Set the size to scale the image to and the mode at which to scale.
*/
void SetScaleToSize(const gfx::IntSize &aSize, ScaleMode aMode)
{
if (mScaleToSize != aSize || mScaleMode != aMode) {
mScaleToSize = aSize;
mScaleMode = aMode;
Mutated();
}
}
ImageContainer* GetContainer() { return mContainer; }
gfx::SamplingFilter GetSamplingFilter() { return mSamplingFilter; }
const gfx::IntSize& GetScaleToSize() { return mScaleToSize; }
ScaleMode GetScaleMode() { return mScaleMode; }
MOZ_LAYER_DECL_NAME("ImageLayer", TYPE_IMAGE)
virtual void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) override;
virtual const gfx::Matrix4x4& GetEffectiveTransformForBuffer() const override
{
return mEffectiveTransformForBuffer;
}
protected:
ImageLayer(LayerManager* aManager, void* aImplData);
~ImageLayer();
virtual void PrintInfo(std::stringstream& aStream, const char* aPrefix) override;
virtual void DumpPacket(layerscope::LayersPacket* aPacket, const void* aParent) override;
RefPtr<ImageContainer> mContainer;
gfx::SamplingFilter mSamplingFilter;
gfx::IntSize mScaleToSize;
ScaleMode mScaleMode;
gfx::Matrix4x4 mEffectiveTransformForBuffer;
};
} // namespace layers
} // namespace mozilla
#endif /* GFX_IMAGELAYER_H */