Source/WebCore/dom/ClipboardMac.mm

/*
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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#import "config.h"
#import "Clipboard.h"

#import "CachedImage.h"
#import "Element.h"
#import "FrameSnapshottingMac.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 Clipboard::dragImage from Clipboard.cpp. Note also that this handles cases that
// Clipboard::dragImage in Clipboard.cpp does not handle correctly, so must resolve that as well.
DragImageRef Clipboard::createDragImage(IntPoint& location) const
{
    NSImage *result = nil;
    if (m_dragImageElement) {
        if (Frame* frame = m_dragImageElement->document().frame()) {
            NSRect imageRect;
            NSRect elementRect;
            result = snapshotDragImage(frame, m_dragImageElement.get(), &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.origin.x - imageRect.origin.x + m_dragLocation.x());
            location.setY(imageRect.size.height - (elementRect.origin.y - imageRect.origin.y + m_dragLocation.y()));
        }
    } else if (m_dragImage) {
        result = m_dragImage->image()->getNSImage();
        
        location = m_dragLocation;
        location.setY([result size].height - location.y());
    }
    return result;
}

}