1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. 3 * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) 4 * 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. 9 * 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. 14 * 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. 19 * 20 */ 21 22 #ifndef HitTestLocation_h 23 #define HitTestLocation_h 24 25 #include "platform/geometry/FloatQuad.h" 26 #include "platform/geometry/FloatRect.h" 27 #include "platform/geometry/LayoutRect.h" 28 #include "platform/geometry/RoundedRect.h" 29 #include "wtf/Forward.h" 30 #include "wtf/ListHashSet.h" 31 #include "wtf/OwnPtr.h" 32 #include "wtf/RefPtr.h" 33 34 namespace WebCore { 35 36 class HitTestLocation { 37 public: 38 39 HitTestLocation(); 40 HitTestLocation(const LayoutPoint&); 41 HitTestLocation(const FloatPoint&); 42 HitTestLocation(const FloatPoint&, const FloatQuad&); 43 // Pass non-zero padding values to perform a rect-based hit test. 44 HitTestLocation(const LayoutPoint& centerPoint, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding); 45 HitTestLocation(const HitTestLocation&, const LayoutSize& offset); 46 HitTestLocation(const HitTestLocation&); 47 ~HitTestLocation(); 48 HitTestLocation& operator=(const HitTestLocation&); 49 point()50 const LayoutPoint& point() const { return m_point; } roundedPoint()51 IntPoint roundedPoint() const { return roundedIntPoint(m_point); } 52 53 // Rect-based hit test related methods. isRectBasedTest()54 bool isRectBasedTest() const { return m_isRectBased; } isRectilinear()55 bool isRectilinear() const { return m_isRectilinear; } boundingBox()56 IntRect boundingBox() const { return m_boundingBox; } 57 58 static IntRect rectForPoint(const LayoutPoint&, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding); topPadding()59 int topPadding() const { return roundedPoint().y() - m_boundingBox.y(); } rightPadding()60 int rightPadding() const { return m_boundingBox.maxX() - roundedPoint().x() - 1; } bottomPadding()61 int bottomPadding() const { return m_boundingBox.maxY() - roundedPoint().y() - 1; } leftPadding()62 int leftPadding() const { return roundedPoint().x() - m_boundingBox.x(); } 63 64 bool intersects(const LayoutRect&) const; 65 bool intersects(const FloatRect&) const; 66 bool intersects(const RoundedRect&) const; 67 transformedPoint()68 const FloatPoint& transformedPoint() const { return m_transformedPoint; } transformedRect()69 const FloatQuad& transformedRect() const { return m_transformedRect; } 70 71 private: 72 template<typename RectType> 73 bool intersectsRect(const RectType&) const; 74 void move(const LayoutSize& offset); 75 76 // This is cached forms of the more accurate point and area below. 77 LayoutPoint m_point; 78 IntRect m_boundingBox; 79 80 FloatPoint m_transformedPoint; 81 FloatQuad m_transformedRect; 82 83 bool m_isRectBased; 84 bool m_isRectilinear; 85 }; 86 87 } // namespace WebCore 88 89 #endif // HitTestLocation_h 90