michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
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 ImageMetadata_h___
michael@0: #define ImageMetadata_h___
michael@0: 
michael@0: #include <stdint.h>
michael@0: #include "mozilla/Maybe.h"
michael@0: #include "nsSize.h"
michael@0: #include "Orientation.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace image {
michael@0: 
michael@0: class RasterImage;
michael@0: 
michael@0: // The metadata about an image that decoders accumulate as they decode.
michael@0: class ImageMetadata
michael@0: {
michael@0: public:
michael@0:   ImageMetadata()
michael@0:     : mHotspotX(-1)
michael@0:     , mHotspotY(-1)
michael@0:     , mLoopCount(-1)
michael@0:     , mIsNonPremultiplied(false)
michael@0:   {}
michael@0: 
michael@0:   // Set the metadata this object represents on an image.
michael@0:   void SetOnImage(RasterImage* image);
michael@0: 
michael@0:   void SetHotspot(uint16_t hotspotx, uint16_t hotspoty)
michael@0:   {
michael@0:     mHotspotX = hotspotx;
michael@0:     mHotspotY = hotspoty;
michael@0:   }
michael@0:   void SetLoopCount(int32_t loopcount)
michael@0:   {
michael@0:     mLoopCount = loopcount;
michael@0:   }
michael@0: 
michael@0:   void SetIsNonPremultiplied(bool nonPremult)
michael@0:   {
michael@0:     mIsNonPremultiplied = nonPremult;
michael@0:   }
michael@0: 
michael@0:   void SetSize(int32_t width, int32_t height, Orientation orientation)
michael@0:   {
michael@0:     mSize.construct(nsIntSize(width, height));
michael@0:     mOrientation.construct(orientation);
michael@0:   }
michael@0: 
michael@0:   bool HasSize() const { return !mSize.empty(); }
michael@0:   bool HasOrientation() const { return !mOrientation.empty(); }
michael@0: 
michael@0:   int32_t GetWidth() const { return mSize.ref().width; }
michael@0:   int32_t GetHeight() const { return mSize.ref().height; }
michael@0:   Orientation GetOrientation() const { return mOrientation.ref(); }
michael@0: 
michael@0: private:
michael@0:   // The hotspot found on cursors, or -1 if none was found.
michael@0:   int32_t mHotspotX;
michael@0:   int32_t mHotspotY;
michael@0: 
michael@0:   // The loop count for animated images, or -1 for infinite loop.
michael@0:   int32_t mLoopCount;
michael@0: 
michael@0:   Maybe<nsIntSize> mSize;
michael@0:   Maybe<Orientation>  mOrientation;
michael@0: 
michael@0:   bool mIsNonPremultiplied;
michael@0: };
michael@0: 
michael@0: } // namespace image
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // ImageMetadata_h___