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/*
* Copyright (c) 2008, 2009, 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.
*/
#include "config.h"
#include "DragImage.h"
#include "Image.h"
#include "NativeImageSkia.h"
#include "NotImplemented.h"
#include "RefPtr.h"
#include "SkBitmap.h"
#include "skia/ext/image_operations.h"
namespace WebCore {
IntSize dragImageSize(DragImageRef image)
{
if (!image)
return IntSize();
return IntSize(image->width(), image->height());
}
void deleteDragImage(DragImageRef image)
{
delete image;
}
DragImageRef scaleDragImage(DragImageRef image, FloatSize scale)
{
if (!image)
return 0;
int imageWidth = scale.width() * image->width();
int imageHeight = scale.height() * image->height();
DragImageRef scaledImage = new SkBitmap(
skia::ImageOperations::Resize(*image, skia::ImageOperations::RESIZE_LANCZOS3,
imageWidth, imageHeight));
delete image;
return scaledImage;
}
DragImageRef dissolveDragImageToFraction(DragImageRef image, float fraction)
{
if (!image)
return 0;
image->setIsOpaque(false);
image->lockPixels();
for (int row = 0; row < image->height(); ++row) {
for (int column = 0; column < image->width(); ++column) {
uint32_t* pixel = image->getAddr32(column, row);
*pixel = SkPreMultiplyARGB(SkColorGetA(*pixel) * fraction,
SkColorGetR(*pixel),
SkColorGetG(*pixel),
SkColorGetB(*pixel));
}
}
image->unlockPixels();
return image;
}
DragImageRef createDragImageFromImage(Image* image)
{
if (!image)
return 0;
NativeImageSkia* bitmap = image->nativeImageForCurrentFrame();
if (!bitmap)
return 0;
SkBitmap* dragImage = new SkBitmap();
bitmap->copyTo(dragImage, SkBitmap::kARGB_8888_Config);
return dragImage;
}
DragImageRef createDragImageIconForCachedImage(CachedImage*)
{
notImplemented();
return 0;
}
} // namespace WebCore
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