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 39 namespace WebCore { 40 class RenderLayer; 41 class Node; 42 } 43 44 namespace blink { 45 46 struct WebFloatRect; 47 struct WebRect; 48 class WebViewImpl; 49 50 class LinkHighlight : public WebContentLayerClient, public WebAnimationDelegate, WebCore::LinkHighlightClient { 51 public: 52 static PassOwnPtr<LinkHighlight> create(WebCore::Node*, WebViewImpl*); 53 virtual ~LinkHighlight(); 54 55 WebContentLayer* contentLayer(); 56 WebLayer* clipLayer(); 57 void startHighlightAnimationIfNeeded(); 58 void updateGeometry(); 59 60 // WebContentLayerClient implementation. 61 virtual void paintContents(WebCanvas*, const WebRect& clipRect, bool canPaintLCDText, WebFloatRect& opaque) OVERRIDE; 62 63 // WebAnimationDelegate implementation. 64 virtual void notifyAnimationStarted(double wallClockTime, double monotonicTime, blink::WebAnimation::TargetProperty) OVERRIDE; 65 virtual void notifyAnimationFinished(double wallClockTime, double monotonicTime, blink::WebAnimation::TargetProperty) OVERRIDE; 66 67 // LinkHighlightClient inplementation. 68 virtual void invalidate() OVERRIDE; 69 virtual WebLayer* layer() OVERRIDE; 70 virtual void clearCurrentGraphicsLayer() OVERRIDE; 71 currentGraphicsLayerForTesting()72 WebCore::GraphicsLayer* currentGraphicsLayerForTesting() const { return m_currentGraphicsLayer; } 73 74 private: 75 LinkHighlight(WebCore::Node*, WebViewImpl*); 76 77 void releaseResources(); 78 79 WebCore::RenderLayer* computeEnclosingCompositingLayer(); 80 void clearGraphicsLayerLinkHighlightPointer(); 81 // This function computes the highlight path, and returns true if it has changed 82 // size since the last call to this function. 83 bool computeHighlightLayerPathAndPosition(WebCore::RenderLayer*); 84 85 OwnPtr<WebContentLayer> m_contentLayer; 86 OwnPtr<WebLayer> m_clipLayer; 87 WebCore::Path m_path; 88 89 RefPtr<WebCore::Node> m_node; 90 WebViewImpl* m_owningWebViewImpl; 91 WebCore::GraphicsLayer* m_currentGraphicsLayer; 92 93 bool m_geometryNeedsUpdate; 94 bool m_isAnimating; 95 double m_startTime; 96 }; 97 98 } // namespace blink 99 100 #endif 101