The Tor Browser: image/src/ImageMetadata.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  *

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

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

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

     7 #ifndef ImageMetadata_h___

     8 #define ImageMetadata_h___

    10 #include <stdint.h>

    11 #include "mozilla/Maybe.h"

    12 #include "nsSize.h"

    13 #include "Orientation.h"

    15 namespace mozilla {

    16 namespace image {

    18 class RasterImage;

    20 // The metadata about an image that decoders accumulate as they decode.

    21 class ImageMetadata

    22 {

    23 public:

    24   ImageMetadata()

    25     : mHotspotX(-1)

    26     , mHotspotY(-1)

    27     , mLoopCount(-1)

    28     , mIsNonPremultiplied(false)

    29   {}

    31   // Set the metadata this object represents on an image.

    32   void SetOnImage(RasterImage* image);

    34   void SetHotspot(uint16_t hotspotx, uint16_t hotspoty)

    35   {

    36     mHotspotX = hotspotx;

    37     mHotspotY = hotspoty;

    38   }

    39   void SetLoopCount(int32_t loopcount)

    40   {

    41     mLoopCount = loopcount;

    42   }

    44   void SetIsNonPremultiplied(bool nonPremult)

    45   {

    46     mIsNonPremultiplied = nonPremult;

    47   }

    49   void SetSize(int32_t width, int32_t height, Orientation orientation)

    50   {

    51     mSize.construct(nsIntSize(width, height));

    52     mOrientation.construct(orientation);

    53   }

    55   bool HasSize() const { return !mSize.empty(); }

    56   bool HasOrientation() const { return !mOrientation.empty(); }

    58   int32_t GetWidth() const { return mSize.ref().width; }

    59   int32_t GetHeight() const { return mSize.ref().height; }

    60   Orientation GetOrientation() const { return mOrientation.ref(); }

    62 private:

    63   // The hotspot found on cursors, or -1 if none was found.

    64   int32_t mHotspotX;

    65   int32_t mHotspotY;

    67   // The loop count for animated images, or -1 for infinite loop.

    68   int32_t mLoopCount;

    70   Maybe<nsIntSize> mSize;

    71   Maybe<Orientation>  mOrientation;

    73   bool mIsNonPremultiplied;

    74 };

    76 } // namespace image

    77 } // namespace mozilla

    79 #endif // ImageMetadata_h___

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