michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef MOZILLA_IMAGELIB_ORIENTEDIMAGE_H_
michael@0: #define MOZILLA_IMAGELIB_ORIENTEDIMAGE_H_
michael@0: 
michael@0: #include "ImageWrapper.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: #include "mozilla/RefPtr.h"
michael@0: #include "Orientation.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace image {
michael@0: 
michael@0: /**
michael@0:  * An Image wrapper that rotates and/or flips an image according to a specified
michael@0:  * Orientation.
michael@0:  *
michael@0:  * XXX(seth): There a known (performance, not correctness) issue with
michael@0:  * GetImageContainer. See the comments for that method for more information.
michael@0:  */
michael@0: class OrientedImage : public ImageWrapper
michael@0: {
michael@0:   typedef mozilla::gfx::SourceSurface SourceSurface;
michael@0: 
michael@0: public:
michael@0:   NS_DECL_ISUPPORTS
michael@0: 
michael@0:   virtual ~OrientedImage() { }
michael@0: 
michael@0:   virtual nsIntRect FrameRect(uint32_t aWhichFrame) MOZ_OVERRIDE;
michael@0: 
michael@0:   NS_IMETHOD GetWidth(int32_t* aWidth) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD GetHeight(int32_t* aHeight) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD GetIntrinsicSize(nsSize* aSize) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD_(mozilla::TemporaryRef<SourceSurface>)
michael@0:     GetFrame(uint32_t aWhichFrame, uint32_t aFlags) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD GetImageContainer(mozilla::layers::LayerManager* aManager,
michael@0:                                mozilla::layers::ImageContainer** _retval) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD Draw(gfxContext* aContext,
michael@0:                   GraphicsFilter aFilter,
michael@0:                   const gfxMatrix& aUserSpaceToImageSpace,
michael@0:                   const gfxRect& aFill,
michael@0:                   const nsIntRect& aSubimage,
michael@0:                   const nsIntSize& aViewportSize,
michael@0:                   const SVGImageContext* aSVGContext,
michael@0:                   uint32_t aWhichFrame,
michael@0:                   uint32_t aFlags) MOZ_OVERRIDE;
michael@0:  
michael@0: protected:
michael@0:   OrientedImage(Image* aImage, Orientation aOrientation)
michael@0:     : ImageWrapper(aImage)
michael@0:     , mOrientation(aOrientation)
michael@0:   { }
michael@0: 
michael@0:   gfxMatrix OrientationMatrix(const nsIntSize& aViewportSize);
michael@0: 
michael@0: private:
michael@0:   Orientation mOrientation;
michael@0: 
michael@0:   friend class ImageOps;
michael@0: };
michael@0: 
michael@0: } // namespace image
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // MOZILLA_IMAGELIB_ORIENTEDIMAGE_H_