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In addition to the image container, the draw result can also be useful for callers to know whether or not the surface(s) in the container are fully decoded or not. This is used in subsequent parts to avoid flickering in some cases.
92 lines
3.5 KiB
C++
92 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 mozilla_image_OrientedImage_h
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#define mozilla_image_OrientedImage_h
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#include "ImageWrapper.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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#include "Orientation.h"
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namespace mozilla {
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namespace image {
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/**
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* An Image wrapper that rotates and/or flips an image according to a specified
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* Orientation.
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*
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* XXX(seth): There a known (performance, not correctness) issue with
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* GetImageContainer. See the comments for that method for more information.
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*/
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class OrientedImage : public ImageWrapper
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{
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typedef gfx::SourceSurface SourceSurface;
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public:
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NS_INLINE_DECL_REFCOUNTING_INHERITED(OrientedImage, ImageWrapper)
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NS_IMETHOD GetWidth(int32_t* aWidth) override;
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NS_IMETHOD GetHeight(int32_t* aHeight) override;
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nsresult GetNativeSizes(nsTArray<gfx::IntSize>& aNativeSizes) const override;
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NS_IMETHOD GetIntrinsicSize(nsSize* aSize) override;
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NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) override;
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NS_IMETHOD_(already_AddRefed<SourceSurface>)
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GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override;
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NS_IMETHOD_(already_AddRefed<SourceSurface>)
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GetFrameAtSize(const gfx::IntSize& aSize,
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uint32_t aWhichFrame,
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uint32_t aFlags) override;
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NS_IMETHOD_(bool) IsImageContainerAvailable(layers::LayerManager* aManager,
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uint32_t aFlags) override;
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NS_IMETHOD_(already_AddRefed<layers::ImageContainer>)
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GetImageContainer(layers::LayerManager* aManager,
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uint32_t aFlags) override;
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NS_IMETHOD_(bool)
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IsImageContainerAvailableAtSize(layers::LayerManager* aManager,
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const gfx::IntSize& aSize,
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uint32_t aFlags) override;
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NS_IMETHOD_(ImgDrawResult)
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GetImageContainerAtSize(layers::LayerManager* aManager,
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const gfx::IntSize& aSize,
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const Maybe<SVGImageContext>& aSVGContext,
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uint32_t aFlags,
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layers::ImageContainer** aOutContainer) override;
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NS_IMETHOD_(ImgDrawResult) Draw(gfxContext* aContext,
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const nsIntSize& aSize,
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const ImageRegion& aRegion,
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uint32_t aWhichFrame,
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gfx::SamplingFilter aSamplingFilter,
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const Maybe<SVGImageContext>& aSVGContext,
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uint32_t aFlags,
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float aOpacity) override;
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NS_IMETHOD_(nsIntRect) GetImageSpaceInvalidationRect(
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const nsIntRect& aRect) override;
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nsIntSize OptimalImageSizeForDest(const gfxSize& aDest,
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uint32_t aWhichFrame,
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gfx::SamplingFilter aSamplingFilter,
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uint32_t aFlags) override;
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protected:
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OrientedImage(Image* aImage, Orientation aOrientation)
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: ImageWrapper(aImage)
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, mOrientation(aOrientation)
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{ }
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virtual ~OrientedImage() { }
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gfxMatrix OrientationMatrix(const nsIntSize& aSize, bool aInvert = false);
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private:
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Orientation mOrientation;
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friend class ImageOps;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_OrientedImage_h
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