2 * Copyright (C) 2006 Apple Computer, Inc.
3 * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
22 #ifndef HitTestResult_h
23 #define HitTestResult_h
25 #include "core/rendering/HitTestLocation.h"
26 #include "core/rendering/HitTestRequest.h"
27 #include "platform/geometry/FloatQuad.h"
28 #include "platform/geometry/FloatRect.h"
29 #include "platform/geometry/LayoutRect.h"
30 #include "platform/heap/Handle.h"
31 #include "platform/text/TextDirection.h"
32 #include "wtf/Forward.h"
33 #include "wtf/ListHashSet.h"
34 #include "wtf/OwnPtr.h"
35 #include "wtf/RefPtr.h"
41 class HTMLMediaElement;
46 class PositionWithAffinity;
50 DISALLOW_ALLOCATION();
52 typedef WillBeHeapListHashSet<RefPtrWillBeMember<Node> > NodeSet;
55 HitTestResult(const LayoutPoint&);
56 // Pass non-negative padding values to perform a rect-based hit test.
57 HitTestResult(const LayoutPoint& centerPoint, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding);
58 HitTestResult(const HitTestLocation&);
59 HitTestResult(const HitTestResult&);
61 HitTestResult& operator=(const HitTestResult&);
64 // For point-based hit tests, these accessors provide information about the node
65 // under the point. For rect-based hit tests they are meaningless (reflect the
66 // last candidate node observed in the rect).
67 // FIXME: Make these less error-prone for rect-based hit tests (center point or fail).
68 Node* innerNode() const { return m_innerNode.get(); }
69 Node* innerPossiblyPseudoNode() const { return m_innerPossiblyPseudoNode.get(); }
70 Element* innerElement() const;
71 Node* innerNonSharedNode() const { return m_innerNonSharedNode.get(); }
72 Element* URLElement() const { return m_innerURLElement.get(); }
73 Scrollbar* scrollbar() const { return m_scrollbar.get(); }
74 bool isOverWidget() const { return m_isOverWidget; }
76 // Forwarded from HitTestLocation
77 bool isRectBasedTest() const { return m_hitTestLocation.isRectBasedTest(); }
79 // The hit-tested point in the coordinates of the main frame.
80 const LayoutPoint& pointInMainFrame() const { return m_hitTestLocation.point(); }
81 IntPoint roundedPointInMainFrame() const { return roundedIntPoint(pointInMainFrame()); }
83 // The hit-tested point in the coordinates of the innerNode frame, the frame containing innerNode.
84 const LayoutPoint& pointInInnerNodeFrame() const { return m_pointInInnerNodeFrame; }
85 IntPoint roundedPointInInnerNodeFrame() const { return roundedIntPoint(pointInInnerNodeFrame()); }
86 LocalFrame* innerNodeFrame() const;
88 // The hit-tested point in the coordinates of the inner node.
89 const LayoutPoint& localPoint() const { return m_localPoint; }
90 void setLocalPoint(const LayoutPoint& p) { m_localPoint = p; }
92 PositionWithAffinity position() const;
93 RenderObject* renderer() const;
95 void setToShadowHostIfInUserAgentShadowRoot();
97 const HitTestLocation& hitTestLocation() const { return m_hitTestLocation; }
99 void setInnerNode(Node*);
100 void setInnerNonSharedNode(Node*);
101 void setURLElement(Element*);
102 void setScrollbar(Scrollbar*);
103 void setIsFirstLetter(bool b) { m_isFirstLetter = b; }
104 void setIsOverWidget(bool b) { m_isOverWidget = b; }
106 bool isSelected() const;
107 String spellingToolTip(TextDirection&) const;
108 String title(TextDirection&) const;
109 const AtomicString& altDisplayString() const;
110 Image* image() const;
111 IntRect imageRect() const;
112 KURL absoluteImageURL() const;
113 // This variant of absoluteImageURL will also convert <canvas> elements
114 // to huge image data URLs (very expensive).
115 KURL absoluteImageURLIncludingCanvasDataURL() const;
116 KURL absoluteMediaURL() const;
117 KURL absoluteLinkURL() const;
118 String textContent() const;
119 bool isLiveLink() const;
120 bool isMisspelled() const;
121 bool isContentEditable() const;
123 bool isOverLink() const;
124 // Returns true if it is rect-based hit test and needs to continue until the rect is fully
125 // enclosed by the boundaries of a node.
126 bool addNodeToRectBasedTestResult(Node*, const HitTestRequest&, const HitTestLocation& pointInContainer, const LayoutRect& = LayoutRect());
127 bool addNodeToRectBasedTestResult(Node*, const HitTestRequest&, const HitTestLocation& pointInContainer, const FloatRect&);
128 void append(const HitTestResult&);
130 // If m_rectBasedTestResult is 0 then set it to a new NodeSet. Return *m_rectBasedTestResult. Lazy allocation makes
131 // sense because the NodeSet is seldom necessary, and it's somewhat expensive to allocate and initialize. This method does
132 // the same thing as mutableRectBasedTestResult(), but here the return value is const.
133 const NodeSet& rectBasedTestResult() const;
135 // Collapse the rect-based test result into a single target at the specified location.
136 void resolveRectBasedTest(Node* resolvedInnerNode, const LayoutPoint& resolvedPointInMainFrame);
138 // FIXME: Remove this.
139 Node* targetNode() const { return innerNode(); }
142 KURL absoluteImageURLInternal(bool allowCanvas) const;
143 NodeSet& mutableRectBasedTestResult(); // See above.
144 HTMLMediaElement* mediaElement() const;
146 HitTestLocation m_hitTestLocation;
148 RefPtrWillBeMember<Node> m_innerNode;
149 RefPtrWillBeMember<Node> m_innerPossiblyPseudoNode;
150 RefPtrWillBeMember<Node> m_innerNonSharedNode;
151 // FIXME: Nothing changes this to a value different from m_hitTestLocation!
152 LayoutPoint m_pointInInnerNodeFrame; // The hit-tested point in innerNode frame coordinates.
153 LayoutPoint m_localPoint; // A point in the local coordinate space of m_innerNonSharedNode's renderer. Allows us to efficiently
154 // determine where inside the renderer we hit on subsequent operations.
155 RefPtrWillBeMember<Element> m_innerURLElement;
156 RefPtr<Scrollbar> m_scrollbar;
157 bool m_isOverWidget; // Returns true if we are over a widget (and not in the border/padding area of a RenderWidget for example).
158 bool m_isFirstLetter;
160 mutable OwnPtrWillBeMember<NodeSet> m_rectBasedTestResult;
165 #endif // HitTestResult_h