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/*
* Copyright (C) 2007 Apple 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.
*/
#include "config.h"
#include "DragImage.h"
#if ENABLE(DRAG_SUPPORT)
#include "DragController.h"
#include "Frame.h"
namespace WebCore {
DragImageRef fitDragImageToMaxSize(DragImageRef image, const IntSize& srcSize, const IntSize& size)
{
float heightResizeRatio = 0.0f;
float widthResizeRatio = 0.0f;
float resizeRatio = -1.0f;
IntSize originalSize = dragImageSize(image);
if (srcSize.width() > size.width()) {
widthResizeRatio = size.width() / (float)srcSize.width();
resizeRatio = widthResizeRatio;
}
if (srcSize.height() > size.height()) {
heightResizeRatio = size.height() / (float)srcSize.height();
if ((resizeRatio < 0.0f) || (resizeRatio > heightResizeRatio))
resizeRatio = heightResizeRatio;
}
if (srcSize == originalSize)
return resizeRatio > 0.0f ? scaleDragImage(image, FloatSize(resizeRatio, resizeRatio)) : image;
// The image was scaled in the webpage so at minimum we must account for that scaling
float scalex = srcSize.width() / (float)originalSize.width();
float scaley = srcSize.height() / (float)originalSize.height();
if (resizeRatio > 0.0f) {
scalex *= resizeRatio;
scaley *= resizeRatio;
}
return scaleDragImage(image, FloatSize(scalex, scaley));
}
DragImageRef createDragImageForSelection(Frame* frame)
{
DragImageRef image = frame->dragImageForSelection();
if (image)
image = dissolveDragImageToFraction(image, DragController::DragImageAlpha);
return image;
}
#if !PLATFORM(MAC) && (!PLATFORM(WIN) || OS(WINCE))
DragImageRef createDragImageForLink(KURL&, const String&, Frame*)
{
return 0;
}
#endif
} // namespace WebCore
#endif // ENABLE(DRAG_SUPPORT)
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