1 files changed, 118 insertions, 0 deletions
diff --git a/Source/WebCore/page/chromium/FrameChromium.cpp b/Source/WebCore/page/chromium/FrameChromium.cpp
new file mode 100644
index 0000000..15ff8b4
--- /dev/null
+++ b/Source/WebCore/page/chromium/FrameChromium.cpp
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008 Google Inc.
+ *
+ * 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 "Document.h"
+#include "FloatRect.h"
+#include "ImageBuffer.h"
+#include "RenderView.h"
+#include "Settings.h"
+
+namespace WebCore {
+
+namespace {
+
+struct ScopedState {
+    ScopedState(Frame* theFrame, RenderObject* theRenderer)
+        : frame(theFrame)
+        , renderer(theRenderer)
+        , paintBehavior(frame->view()->paintBehavior())
+        , backgroundColor(frame->view()->baseBackgroundColor())
+    {
+    }
+
+    ~ScopedState()
+    {
+        if (renderer)
+            renderer->updateDragState(false);
+        frame->view()->setPaintBehavior(paintBehavior);
+        frame->view()->setBaseBackgroundColor(backgroundColor);
+        frame->view()->setNodeToDraw(0);
+    }
+
+    Frame* frame;
+    RenderObject* renderer;
+    PaintBehavior paintBehavior;
+    Color backgroundColor;
+};
+
+} // namespace
+
+DragImageRef Frame::nodeImage(Node* node)
+{
+    RenderObject* renderer = node->renderer();
+    if (!renderer)
+        return 0;
+
+    const ScopedState state(this, renderer);
+
+    renderer->updateDragState(true);
+    m_view->setPaintBehavior(state.paintBehavior | PaintBehaviorFlattenCompositingLayers);
+    // When generating the drag image for an element, ignore the document background.
+    m_view->setBaseBackgroundColor(colorWithOverrideAlpha(Color::white, 1.0));
+    m_doc->updateLayout();
+    m_view->setNodeToDraw(node); // Enable special sub-tree drawing mode.
+
+    IntRect topLevelRect;
+    IntRect paintingRect = renderer->paintingRootRect(topLevelRect);
+
+    OwnPtr<ImageBuffer> buffer(ImageBuffer::create(paintingRect.size()));
+    if (!buffer)
+        return 0;
+    buffer->context()->translate(-paintingRect.x(), -paintingRect.y());
+    buffer->context()->clip(FloatRect(0, 0, paintingRect.right(), paintingRect.bottom()));
+
+    m_view->paintContents(buffer->context(), paintingRect);
+
+    RefPtr<Image> image = buffer->copyImage();
+    return createDragImageFromImage(image.get());
+}
+
+DragImageRef Frame::dragImageForSelection()
+{
+    if (!selection()->isRange())
+        return 0;
+
+    const ScopedState state(this, 0);
+    m_view->setPaintBehavior(PaintBehaviorSelectionOnly);
+    m_doc->updateLayout();
+
+    IntRect paintingRect = enclosingIntRect(selection()->bounds());
+
+    OwnPtr<ImageBuffer> buffer(ImageBuffer::create(paintingRect.size()));
+    if (!buffer)
+        return 0;
+    buffer->context()->translate(-paintingRect.x(), -paintingRect.y());
+    buffer->context()->clip(FloatRect(0, 0, paintingRect.right(), paintingRect.bottom()));
+
+    m_view->paintContents(buffer->context(), paintingRect);
+
+    RefPtr<Image> image = buffer->copyImage();
+    return createDragImageFromImage(image.get());
+}
+
+} // namespace WebCore