Source/WebCore/dom/DataTransferMac.mm

/*
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
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#import "config.h"
#import "DataTransfer.h"

#if PLATFORM(MAC)

#import "CachedImage.h"
#import "Element.h"
#import "DragImage.h"

namespace WebCore {

// FIXME: Need to refactor and figure out how to handle the flipping in a more sensible way so we can
// use the default DataTransfer::dragImage from DataTransfer.cpp. Note also that this handles cases that
// DataTransfer::dragImage in DataTransfer.cpp does not handle correctly, so must resolve that as well.
DragImageRef DataTransfer::createDragImage(IntPoint& location) const
{
    DragImageRef result = nil;
    if (m_dragImageElement) {
        if (Frame* frame = m_dragImageElement->document().frame()) {
            IntRect imageRect;
            IntRect elementRect;
            result = createDragImageForImage(*frame, *m_dragImageElement, imageRect, elementRect);
            // Client specifies point relative to element, not the whole image, which may include child
            // layers spread out all over the place.
            location.setX(elementRect.x() - imageRect.x() + m_dragLocation.x());
            location.setY(imageRect.height() - (elementRect.y() - imageRect.y() + m_dragLocation.y()));
        }
    } else if (m_dragImage) {
        result = m_dragImage->image()->snapshotNSImage();
        
        location = m_dragLocation;
        location.setY([result size].height - location.y());
    }
    return result;
}

}

#endif // PLATFORM(MAC)