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/*
* Copyright (C) 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 AsyncImageResizer_h
#define AsyncImageResizer_h
#if ENABLE(IMAGE_RESIZER)
#include "Blob.h"
#include "CachedResourceClient.h"
#include "IntSize.h"
#include "ScriptValue.h"
namespace WebCore {
class CachedImage;
class ImageResizerThread;
// AsyncImageResizer waits for the CachedImage that is passed in to load completely,
// then starts an ImageResizerThread to resize the image. Once created, ImageResizerThread
// becomes in charge of its own lifetime and that of AsyncImageResizer. After the callbacks
// occur, both objects are destroyed. If the document is destroyed during resizing,
// AsyncImageResizer will receive a notification and subsequently block the callbacks from
// occurring.
class AsyncImageResizer : public CachedResourceClient, public RefCounted<AsyncImageResizer> {
public:
struct CallbackInfo {
CallbackInfo(PassRefPtr<AsyncImageResizer> asyncImageResizer)
: asyncImageResizer(asyncImageResizer)
, blob(0)
{
}
RefPtr<AsyncImageResizer> asyncImageResizer;
RefPtr<Blob> blob;
};
enum OutputType {
JPEG,
PNG
};
enum AspectRatioOption {
PreserveAspectRatio,
IgnoreAspectRatio
};
enum OrientationOption {
CorrectOrientation,
IgnoreOrientation
};
static PassRefPtr<AsyncImageResizer> create(CachedImage*, OutputType, IntSize desiredBounds, ScriptValue successCallback, ScriptValue errorCallback, float quality, AspectRatioOption, OrientationOption);
~AsyncImageResizer();
// FIXME: Insert override function for notification of document destruction (change m_callbacksOk).
void resizeComplete(RefPtr<Blob>) { /* FIXME: Not yet implemented. */ }
void resizeError() { /* FIXME: Not yet implemented. */ }
private:
AsyncImageResizer(CachedImage*, OutputType, IntSize desiredBounds, ScriptValue successCallback, ScriptValue errorCallback, float quality, AspectRatioOption, OrientationOption);
virtual void notifyFinished(CachedResource*);
CachedImage* m_cachedImage;
ScriptValue m_successCallback;
ScriptValue m_errorCallback;
// Parameters to pass into ImageResizerThread.
OutputType m_outputType;
IntSize m_desiredBounds;
float m_quality;
AspectRatioOption m_aspectRatioOption;
OrientationOption m_orientationOption;
};
} // namespace WebCore
#endif // ENABLE(IMAGE_RESIZER)
#endif // AsyncImageResizer_h
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