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104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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"
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#include "ImageTypes.h"
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#include "nsISupportsImpl.h"
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#include "gfxPattern.h"
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namespace mozilla {
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namespace layers {
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class ImageContainer;
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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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enum ScaleMode {
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SCALE_NONE,
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SCALE_STRETCH,
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SCALE_SENTINEL
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// Unimplemented - SCALE_PRESERVE_ASPECT_RATIO_CONTAIN
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};
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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 SetFilter(gfxPattern::GraphicsFilter aFilter)
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{
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if (mFilter != aFilter) {
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MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) Filter", this));
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mFilter = aFilter;
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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 gfxIntSize &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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gfxPattern::GraphicsFilter GetFilter() { return mFilter; }
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const gfxIntSize& 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 gfx3DMatrix& aTransformToSurface);
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/**
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* if true, the image will only be backed by a single tile texture
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*/
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void SetDisallowBigImage(bool aDisallowBigImage)
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{
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if (mDisallowBigImage != aDisallowBigImage) {
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MOZ_LAYERS_LOG_IF_SHADOWABLE(this, ("Layer::Mutated(%p) DisallowBigImage", this));
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mDisallowBigImage = aDisallowBigImage;
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Mutated();
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}
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}
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protected:
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ImageLayer(LayerManager* aManager, void* aImplData);
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~ImageLayer();
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virtual nsACString& PrintInfo(nsACString& aTo, const char* aPrefix);
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nsRefPtr<ImageContainer> mContainer;
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gfxPattern::GraphicsFilter mFilter;
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gfxIntSize mScaleToSize;
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ScaleMode mScaleMode;
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bool mDisallowBigImage;
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};
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}
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}
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#endif /* GFX_IMAGELAYER_H */
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