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72 lines
2.3 KiB
C++
72 lines
2.3 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_IMAGELIB_ORIENTEDIMAGE_H_
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#define MOZILLA_IMAGELIB_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_DECL_ISUPPORTS_INHERITED
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virtual nsIntRect FrameRect(uint32_t aWhichFrame) MOZ_OVERRIDE;
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NS_IMETHOD GetWidth(int32_t* aWidth) MOZ_OVERRIDE;
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NS_IMETHOD GetHeight(int32_t* aHeight) MOZ_OVERRIDE;
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NS_IMETHOD GetIntrinsicSize(nsSize* aSize) MOZ_OVERRIDE;
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NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) MOZ_OVERRIDE;
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NS_IMETHOD_(TemporaryRef<SourceSurface>)
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GetFrame(uint32_t aWhichFrame, uint32_t aFlags) MOZ_OVERRIDE;
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NS_IMETHOD GetImageContainer(layers::LayerManager* aManager,
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layers::ImageContainer** _retval) MOZ_OVERRIDE;
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NS_IMETHOD Draw(gfxContext* aContext,
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GraphicsFilter aFilter,
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const gfxMatrix& aUserSpaceToImageSpace,
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const gfxRect& aFill,
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const nsIntRect& aSubimage,
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const nsIntSize& aViewportSize,
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const SVGImageContext* aSVGContext,
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uint32_t aWhichFrame,
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uint32_t aFlags) MOZ_OVERRIDE;
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NS_IMETHOD_(nsIntRect) GetImageSpaceInvalidationRect(const nsIntRect& aRect) MOZ_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& aViewportSize);
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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_IMAGELIB_ORIENTEDIMAGE_H_
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