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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 "public/platform/WebContentLayerClient.h" | |
| 29 #include "wtf/Noncopyable.h" | |
| 30 #include "wtf/PassOwnPtr.h" | |
| 31 | |
| 32 class SkCanvas; | |
| 33 | |
| 34 namespace WebCore { | |
| 35 | |
| 36 class GraphicsContext; | |
| 37 class IntRect; | |
| 38 | |
| 39 class GraphicsContextPainter { | |
| 40 public: | |
| 41 virtual void paint(GraphicsContext&, const IntRect& clip) = 0; | |
| 42 | |
| 43 protected: | |
| 44 virtual ~GraphicsContextPainter() { } | |
| 45 }; | |
| 46 | |
| 47 class OpaqueRectTrackingContentLayerDelegate : public blink::WebContentLayerClie
nt { | |
| 48 WTF_MAKE_NONCOPYABLE(OpaqueRectTrackingContentLayerDelegate); | |
| 49 public: | |
| 50 explicit OpaqueRectTrackingContentLayerDelegate(GraphicsContextPainter*); | |
| 51 virtual ~OpaqueRectTrackingContentLayerDelegate(); | |
| 52 | |
| 53 // If we know that everything that will be painted through this delegate, th
en we don't bother | |
| 54 // tracking opaqueness. | |
| 55 void setOpaque(bool opaque) { m_opaque = opaque; } | |
| 56 | |
| 57 // blink::WebContentLayerClient implementation. | |
| 58 virtual void paintContents(SkCanvas*, const blink::WebRect& clip, bool canPa
intLCDText, blink::WebFloatRect& opaque) OVERRIDE; | |
| 59 | |
| 60 private: | |
| 61 GraphicsContextPainter* m_painter; | |
| 62 bool m_opaque; | |
| 63 }; | |
| 64 | |
| 65 } | |
| 66 | |
| 67 #endif // OpaqueRectTrackingContentLayerDelegate_h | |
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