/* | |
* 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) | |
dissolveDragImageToFraction(image, DragController::DragImageAlpha); | |
return image; | |
} | |
} // namespace WebCore | |
#endif // ENABLE(DRAG_SUPPORT) |