The Tor Browser: image/src/OrientedImage.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef MOZILLA_IMAGELIB_ORIENTEDIMAGE_H_

     7 #define MOZILLA_IMAGELIB_ORIENTEDIMAGE_H_

     9 #include "ImageWrapper.h"

    10 #include "mozilla/gfx/2D.h"

    11 #include "mozilla/RefPtr.h"

    12 #include "Orientation.h"

    14 namespace mozilla {

    15 namespace image {

    17 /**

    18  * An Image wrapper that rotates and/or flips an image according to a specified

    19  * Orientation.

    20  *

    21  * XXX(seth): There a known (performance, not correctness) issue with

    22  * GetImageContainer. See the comments for that method for more information.

    23  */

    24 class OrientedImage : public ImageWrapper

    25 {

    26   typedef mozilla::gfx::SourceSurface SourceSurface;

    28 public:

    29   NS_DECL_ISUPPORTS

    31   virtual ~OrientedImage() { }

    33   virtual nsIntRect FrameRect(uint32_t aWhichFrame) MOZ_OVERRIDE;

    35   NS_IMETHOD GetWidth(int32_t* aWidth) MOZ_OVERRIDE;

    36   NS_IMETHOD GetHeight(int32_t* aHeight) MOZ_OVERRIDE;

    37   NS_IMETHOD GetIntrinsicSize(nsSize* aSize) MOZ_OVERRIDE;

    38   NS_IMETHOD GetIntrinsicRatio(nsSize* aRatio) MOZ_OVERRIDE;

    39   NS_IMETHOD_(mozilla::TemporaryRef<SourceSurface>)

    40     GetFrame(uint32_t aWhichFrame, uint32_t aFlags) MOZ_OVERRIDE;

    41   NS_IMETHOD GetImageContainer(mozilla::layers::LayerManager* aManager,

    42                                mozilla::layers::ImageContainer** _retval) MOZ_OVERRIDE;

    43   NS_IMETHOD Draw(gfxContext* aContext,

    44                   GraphicsFilter aFilter,

    45                   const gfxMatrix& aUserSpaceToImageSpace,

    46                   const gfxRect& aFill,

    47                   const nsIntRect& aSubimage,

    48                   const nsIntSize& aViewportSize,

    49                   const SVGImageContext* aSVGContext,

    50                   uint32_t aWhichFrame,

    51                   uint32_t aFlags) MOZ_OVERRIDE;

    53 protected:

    54   OrientedImage(Image* aImage, Orientation aOrientation)

    55     : ImageWrapper(aImage)

    56     , mOrientation(aOrientation)

    57   { }

    59   gfxMatrix OrientationMatrix(const nsIntSize& aViewportSize);

    61 private:

    62   Orientation mOrientation;

    64   friend class ImageOps;

    65 };

    67 } // namespace image

    68 } // namespace mozilla

    70 #endif // MOZILLA_IMAGELIB_ORIENTEDIMAGE_H_

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