1 files changed, 90 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/RenderHTMLCanvas.cpp b/Source/WebCore/rendering/RenderHTMLCanvas.cpp
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+++ b/Source/WebCore/rendering/RenderHTMLCanvas.cpp
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+/*
+ * Copyright (C) 2004, 2006, 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 "RenderHTMLCanvas.h"
+
+#include "CanvasRenderingContext.h"
+#include "Document.h"
+#include "FrameView.h"
+#include "GraphicsContext.h"
+#include "HTMLCanvasElement.h"
+#include "HTMLNames.h"
+#include "PaintInfo.h"
+#include "RenderView.h"
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+RenderHTMLCanvas::RenderHTMLCanvas(HTMLCanvasElement* element)
+    : RenderReplaced(element, element->size())
+{
+    view()->frameView()->setIsVisuallyNonEmpty();
+}
+
+bool RenderHTMLCanvas::requiresLayer() const
+{
+    if (RenderReplaced::requiresLayer())
+        return true;
+    
+    HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(node());
+    return canvas && canvas->renderingContext() && canvas->renderingContext()->isAccelerated();
+}
+
+void RenderHTMLCanvas::paintReplaced(PaintInfo& paintInfo, int tx, int ty)
+{
+    IntRect rect = contentBoxRect();
+    rect.move(tx, ty);
+    static_cast<HTMLCanvasElement*>(node())->paint(paintInfo.context, rect);
+}
+
+void RenderHTMLCanvas::canvasSizeChanged()
+{
+    IntSize canvasSize = static_cast<HTMLCanvasElement*>(node())->size();
+    IntSize zoomedSize(canvasSize.width() * style()->effectiveZoom(), canvasSize.height() * style()->effectiveZoom());
+
+    if (zoomedSize == intrinsicSize())
+        return;
+
+    setIntrinsicSize(zoomedSize);
+
+    if (!parent())
+        return;
+
+    if (!preferredLogicalWidthsDirty())
+        setPreferredLogicalWidthsDirty(true);
+
+    IntSize oldSize = size();
+    computeLogicalWidth();
+    computeLogicalHeight();
+    if (oldSize == size())
+        return;
+
+    if (!selfNeedsLayout())
+        setNeedsLayout(true);
+}
+
+} // namespace WebCore