2 * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #include "RenderHTMLCanvas.h"
29 #include "CanvasRenderingContext.h"
31 #include "FrameView.h"
32 #include "GraphicsContext.h"
33 #include "HTMLCanvasElement.h"
34 #include "HTMLNames.h"
35 #include "PaintInfo.h"
36 #include "RenderView.h"
40 using namespace HTMLNames;
42 RenderHTMLCanvas::RenderHTMLCanvas(HTMLCanvasElement* element)
43 : RenderReplaced(element, element->size())
45 view()->frameView()->setIsVisuallyNonEmpty();
48 bool RenderHTMLCanvas::requiresLayer() const
54 if (RenderReplaced::requiresLayer())
57 HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(node());
58 return canvas && canvas->renderingContext() && canvas->renderingContext()->isAccelerated();
61 void RenderHTMLCanvas::paintReplaced(PaintInfo& paintInfo, int tx, int ty)
63 IntRect rect = contentBoxRect();
65 static_cast<HTMLCanvasElement*>(node())->paint(paintInfo.context, rect);
68 void RenderHTMLCanvas::canvasSizeChanged()
70 IntSize canvasSize = static_cast<HTMLCanvasElement*>(node())->size();
71 IntSize zoomedSize(canvasSize.width() * style()->effectiveZoom(), canvasSize.height() * style()->effectiveZoom());
73 if (zoomedSize == intrinsicSize())
76 setIntrinsicSize(zoomedSize);
81 if (!preferredLogicalWidthsDirty())
82 setPreferredLogicalWidthsDirty(true);
84 IntSize oldSize = size();
85 computeLogicalWidth();
86 computeLogicalHeight();
87 if (oldSize == size())
90 if (!selfNeedsLayout())
94 } // namespace WebCore