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/* -*- Mode: C++; tab-width: 2; 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 mozilla_image_OrientedImage_h
#define mozilla_image_OrientedImage_h
#include "ImageWrapper.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/RefPtr.h"
#include "Orientation.h"
namespace mozilla {
namespace image {
/**
* An Image wrapper that rotates and/or flips an image according to a specified
* Orientation.
*
* XXX(seth): There a known (performance, not correctness) issue with
* GetImageContainer. See the comments for that method for more information.
*/
class OrientedImage : public ImageWrapper
{
typedef gfx::SourceSurface SourceSurface;
public:
NS_DECL_ISUPPORTS_INHERITED
NS_IMETHOD GetWidth(int32_t* aWidth) override;
NS_IMETHOD GetHeight(int32_t* aHeight) override;
NS_IMETHOD GetIntrinsicSize(nsSize* aSize) override;
NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) override;
NS_IMETHOD_(already_AddRefed<SourceSurface>)
GetFrame(uint32_t aWhichFrame, uint32_t aFlags) override;
NS_IMETHOD_(already_AddRefed<SourceSurface>)
GetFrameAtSize(const gfx::IntSize& aSize,
uint32_t aWhichFrame,
uint32_t aFlags) override;
NS_IMETHOD_(bool) IsImageContainerAvailable(layers::LayerManager* aManager,
uint32_t aFlags) override;
NS_IMETHOD_(already_AddRefed<layers::ImageContainer>)
GetImageContainer(layers::LayerManager* aManager,
uint32_t aFlags) override;
NS_IMETHOD_(DrawResult) Draw(gfxContext* aContext,
const nsIntSize& aSize,
const ImageRegion& aRegion,
uint32_t aWhichFrame,
gfx::SamplingFilter aSamplingFilter,
const Maybe<SVGImageContext>& aSVGContext,
uint32_t aFlags) override;
NS_IMETHOD_(nsIntRect) GetImageSpaceInvalidationRect(
const nsIntRect& aRect) override;
nsIntSize OptimalImageSizeForDest(const gfxSize& aDest,
uint32_t aWhichFrame,
gfx::SamplingFilter aSamplingFilter,
uint32_t aFlags) override;
protected:
OrientedImage(Image* aImage, Orientation aOrientation)
: ImageWrapper(aImage)
, mOrientation(aOrientation)
{ }
virtual ~OrientedImage() { }
gfxMatrix OrientationMatrix(const nsIntSize& aSize, bool aInvert = false);
private:
Orientation mOrientation;
friend class ImageOps;
};
} // namespace image
} // namespace mozilla
#endif // mozilla_image_OrientedImage_h
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