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Side by Side Diff: Source/platform/graphics/OpaqueRectTrackingContentLayerDelegate.h

Issue 554183004: Add an alternate paintContents method to WebContentLayerClient. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: opaquerecttracking: . Created 6 years, 3 months ago
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1 /*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND AN Y
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR AN Y
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND O N
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25 #ifndef OpaqueRectTrackingContentLayerDelegate_h
26 #define OpaqueRectTrackingContentLayerDelegate_h
27
28 #include "platform/PlatformExport.h"
29 #include "public/platform/WebContentLayerClient.h"
30 #include "wtf/Noncopyable.h"
31 #include "wtf/PassOwnPtr.h"
32
33 class SkCanvas;
34
35 namespace blink {
36
37 class GraphicsContext;
38 class IntRect;
39
40 class PLATFORM_EXPORT GraphicsContextPainter {
41 public:
42 virtual void paint(GraphicsContext&, const IntRect& clip) = 0;
43
44 protected:
45 virtual ~GraphicsContextPainter() { }
46 };
47
48 class PLATFORM_EXPORT OpaqueRectTrackingContentLayerDelegate : public WebContent LayerClient {
49 WTF_MAKE_NONCOPYABLE(OpaqueRectTrackingContentLayerDelegate);
50 public:
51 explicit OpaqueRectTrackingContentLayerDelegate(GraphicsContextPainter*);
52 virtual ~OpaqueRectTrackingContentLayerDelegate();
53
54 // If we know that everything that will be painted through this delegate, th en we don't bother
55 // tracking opaqueness.
56 void setOpaque(bool opaque) { m_opaque = opaque; }
57
58 // WebContentLayerClient implementation.
59 virtual void paintContents(SkCanvas*, const WebRect& clip, bool canPaintLCDT ext, WebFloatRect& opaque,
60 WebContentLayerClient::GraphicsContextStatus = GraphicsContextEnabled) O VERRIDE;
61
62 private:
63 GraphicsContextPainter* m_painter;
64 bool m_opaque;
65 };
66
67 } // namespace blink
68
69 #endif // OpaqueRectTrackingContentLayerDelegate_h
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