diff -r 000000000000 -r 4f2f89ce4247 WebCore/platform/DragImage.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/platform/DragImage.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,78 @@
+/*
+ * 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)