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/*
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_IMAGE_OBSERVER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_IMAGE_OBSERVER_H_
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/platform_export.h"
namespace blink {
class Image;
// Interface for notification about changes to an image, including decoding,
// drawing, and animating.
class PLATFORM_EXPORT ImageObserver : public GarbageCollectedMixin {
protected:
virtual ~ImageObserver();
public:
virtual void DecodedSizeChangedTo(const Image*, size_t new_size) = 0;
virtual bool ShouldPauseAnimation(const Image*) = 0;
// Notification for when the image's contents have changed such as when an
// SVG image animates.
virtual void Changed(const Image*) = 0;
// See the comment of Image::SetData().
virtual void AsyncLoadCompleted(const Image*) = 0;
void Trace(Visitor* visitor) override {}
};
} // namespace blink
#endif
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