diff options
Diffstat (limited to 'src/3rdparty/webkit/WebCore/platform/DragImage.cpp')
-rw-r--r-- | src/3rdparty/webkit/WebCore/platform/DragImage.cpp | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/WebCore/platform/DragImage.cpp b/src/3rdparty/webkit/WebCore/platform/DragImage.cpp new file mode 100644 index 0000000..adf9a57 --- /dev/null +++ b/src/3rdparty/webkit/WebCore/platform/DragImage.cpp @@ -0,0 +1,74 @@ +/* + * 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" +#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; +} + +} |