WebCore/platform/win/DragImageWin.cpp

/*
 * Copyright (C) 2007, 2008 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 "CachedImage.h"
#include "GraphicsContext.h"
#include "Image.h"
#include "RetainPtr.h"

#include <windows.h>

namespace WebCore {

IntSize dragImageSize(DragImageRef image)
{
    if (!image)
        return IntSize();
    BITMAP b;
    GetObject(image, sizeof(BITMAP), &b);
    return IntSize(b.bmWidth, b.bmHeight);
}

void deleteDragImage(DragImageRef image)
{
    if (image)
        ::DeleteObject(image);
}

DragImageRef dissolveDragImageToFraction(DragImageRef image, float)
{
    //We don't do this on windows as the dragimage is blended by the OS
    return image;
}
        
DragImageRef createDragImageIconForCachedImage(CachedImage* image)
{
    if (!image)
        return 0;

    String filename = image->response().suggestedFilename();
    
    SHFILEINFO shfi = {0};
    if (FAILED(SHGetFileInfo(static_cast<LPCWSTR>(filename.charactersWithNullTermination()), FILE_ATTRIBUTE_NORMAL,
        &shfi, sizeof(shfi), SHGFI_ICON | SHGFI_USEFILEATTRIBUTES)))
        return 0;

    ICONINFO iconInfo;
    if (!GetIconInfo(shfi.hIcon, &iconInfo)) {
        DestroyIcon(shfi.hIcon);
        return 0;
    }

    DestroyIcon(shfi.hIcon);
    DeleteObject(iconInfo.hbmMask);

    return iconInfo.hbmColor;
}
    
}