third_party/WebKit/Source/web/LinkHighlightImpl.h

   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 LinkHighlightImpl_h
  27 #define LinkHighlightImpl_h
  28
  29 #include "platform/graphics/LinkHighlight.h"
  30 #include "platform/graphics/Path.h"
  31 #include "platform/heap/Handle.h"
  32 #include "public/platform/WebCompositorAnimationDelegate.h"
  33 #include "public/platform/WebCompositorAnimationPlayer.h"
  34 #include "public/platform/WebCompositorAnimationPlayerClient.h"
  35 #include "public/platform/WebContentLayer.h"
  36 #include "public/platform/WebContentLayerClient.h"
  37 #include "wtf/Forward.h"
  38 #include "wtf/OwnPtr.h"
  39
  40 namespace blink {
  41
  42 class GraphicsLayer;
  43 class LayoutBoxModelObject;
  44 class Node;
  45 class WebContentLayer;
  46 class WebLayer;
  47 class WebViewImpl;
  48
  49 class LinkHighlightImpl final : public LinkHighlight
  50     , public WebContentLayerClient
  51     , public WebCompositorAnimationDelegate
  52     , public WebCompositorAnimationPlayerClient {
  53 public:
  54     static PassOwnPtr<LinkHighlightImpl> create(Node*, WebViewImpl*);
  55     ~LinkHighlightImpl() override;
  56
  57     WebContentLayer* contentLayer();
  58     WebLayer* clipLayer();
  59     void startHighlightAnimationIfNeeded();
  60     void updateGeometry();
  61
  62     // WebContentLayerClient implementation.
  63     void paintContents(WebCanvas*, const WebRect& clipRect, WebContentLayerClient::PaintingControlSetting) override;
  64     void paintContents(WebDisplayItemList*, const WebRect& clipRect, WebContentLayerClient::PaintingControlSetting) override;
  65
  66     // WebCompositorAnimationDelegate implementation.
  67     void notifyAnimationStarted(double monotonicTime, int group) override;
  68     void notifyAnimationFinished(double monotonicTime, int group) override;
  69
  70     // LinkHighlight implementation.
  71     void invalidate() override;
  72     WebLayer* layer() override;
  73     void clearCurrentGraphicsLayer() override;
  74
  75     // WebCompositorAnimationPlayerClient implementation.
  76     WebCompositorAnimationPlayer* compositorPlayer() const override;
  77
  78     GraphicsLayer* currentGraphicsLayerForTesting() const { return m_currentGraphicsLayer; }
  79
  80 private:
  81     LinkHighlightImpl(Node*, WebViewImpl*);
  82
  83     void releaseResources();
  84     void computeQuads(const Node&, Vector<FloatQuad>&) const;
  85
  86     void attachLinkHighlightToCompositingLayer(const LayoutBoxModelObject* paintInvalidationContainer);
  87     void clearGraphicsLayerLinkHighlightPointer();
  88     // This function computes the highlight path, and returns true if it has changed
  89     // size since the last call to this function.
  90     bool computeHighlightLayerPathAndPosition(const LayoutBoxModelObject*);
  91
  92     OwnPtr<WebContentLayer> m_contentLayer;
  93     OwnPtr<WebLayer> m_clipLayer;
  94     Path m_path;
  95
  96     RefPtrWillBePersistent<Node> m_node;
  97     WebViewImpl* m_owningWebViewImpl;
  98     GraphicsLayer* m_currentGraphicsLayer;
  99     OwnPtr<WebCompositorAnimationPlayer> m_compositorPlayer;
 100
 101     bool m_geometryNeedsUpdate;
 102     bool m_isAnimating;
 103     double m_startTime;
 104 };
 105
 106 } // namespace blink
 107
 108 #endif // LinkHighlightImpl_h