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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef LinkHighlight_h 27 #define LinkHighlight_h 28 29 #include "platform/geometry/FloatPoint.h" 30 #include "platform/geometry/IntPoint.h" 31 #include "platform/graphics/GraphicsLayer.h" 32 #include "platform/graphics/Path.h" 33 #include "public/platform/WebAnimationDelegate.h" 34 #include "public/platform/WebContentLayer.h" 35 #include "public/platform/WebContentLayerClient.h" 36 #include "public/platform/WebLayer.h" 37 #include "wtf/OwnPtr.h" 38 #include "wtf/Vector.h" 39 40 namespace WebCore { 41 class RenderLayer; 42 class RenderObject; 43 class Node; 44 } 45 46 namespace blink { 47 48 struct WebFloatRect; 49 struct WebRect; 50 class WebViewImpl; 51 52 class LinkHighlight FINAL : public WebContentLayerClient, public WebAnimationDelegate, WebCore::LinkHighlightClient { 53 public: 54 static PassOwnPtr<LinkHighlight> create(WebCore::Node*, WebViewImpl*); 55 virtual ~LinkHighlight(); 56 57 WebContentLayer* contentLayer(); 58 WebLayer* clipLayer(); 59 void startHighlightAnimationIfNeeded(); 60 void updateGeometry(); 61 62 // WebContentLayerClient implementation. 63 virtual void paintContents(WebCanvas*, const WebRect& clipRect, bool canPaintLCDText, WebFloatRect& opaque, 64 WebContentLayerClient::GraphicsContextStatus = GraphicsContextEnabled) OVERRIDE; 65 66 // WebAnimationDelegate implementation. 67 virtual void notifyAnimationStarted(double monotonicTime, blink::WebAnimation::TargetProperty) OVERRIDE; 68 virtual void notifyAnimationFinished(double monotonicTime, blink::WebAnimation::TargetProperty) OVERRIDE; 69 70 // LinkHighlightClient inplementation. 71 virtual void invalidate() OVERRIDE; 72 virtual WebLayer* layer() OVERRIDE; 73 virtual void clearCurrentGraphicsLayer() OVERRIDE; 74 currentGraphicsLayerForTesting()75 WebCore::GraphicsLayer* currentGraphicsLayerForTesting() const { return m_currentGraphicsLayer; } 76 77 private: 78 LinkHighlight(WebCore::Node*, WebViewImpl*); 79 80 void releaseResources(); 81 void computeQuads(WebCore::Node*, WTF::Vector<WebCore::FloatQuad>&) const; 82 83 WebCore::RenderLayer* computeEnclosingCompositingLayer(); 84 void clearGraphicsLayerLinkHighlightPointer(); 85 // This function computes the highlight path, and returns true if it has changed 86 // size since the last call to this function. 87 bool computeHighlightLayerPathAndPosition(WebCore::RenderLayer*); 88 89 OwnPtr<WebContentLayer> m_contentLayer; 90 OwnPtr<WebLayer> m_clipLayer; 91 WebCore::Path m_path; 92 93 RefPtrWillBePersistent<WebCore::Node> m_node; 94 WebViewImpl* m_owningWebViewImpl; 95 WebCore::GraphicsLayer* m_currentGraphicsLayer; 96 97 bool m_geometryNeedsUpdate; 98 bool m_isAnimating; 99 double m_startTime; 100 }; 101 102 } // namespace blink 103 104 #endif 105