1/*
2 * Copyright (C) 2006 Apple 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#pragma once
23
24#include "FloatQuad.h"
25#include "FloatRect.h"
26#include "LayoutRect.h"
27#include "RoundedRect.h"
28#include <wtf/Forward.h>
29
30namespace WebCore {
31
32class HitTestLocation {
33public:
34 WEBCORE_EXPORT HitTestLocation();
35 HitTestLocation(const LayoutPoint&);
36 WEBCORE_EXPORT HitTestLocation(const FloatPoint&);
37 HitTestLocation(const FloatPoint&, const FloatQuad&);
38 // Pass non-zero padding values to perform a rect-based hit test.
39 HitTestLocation(const LayoutPoint& centerPoint, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding);
40 // Make a copy the HitTestLocation in a new region by applying given offset to internal point and area.
41 HitTestLocation(const HitTestLocation&, const LayoutSize& offset);
42 WEBCORE_EXPORT HitTestLocation(const HitTestLocation&);
43 WEBCORE_EXPORT ~HitTestLocation();
44 HitTestLocation& operator=(const HitTestLocation&);
45
46 const LayoutPoint& point() const { return m_point; }
47 IntPoint roundedPoint() const { return roundedIntPoint(m_point); }
48
49 // Rect-based hit test related methods.
50 bool isRectBasedTest() const { return m_isRectBased; }
51 bool isRectilinear() const { return m_isRectilinear; }
52 IntRect boundingBox() const { return m_boundingBox; }
53
54 WEBCORE_EXPORT static IntRect rectForPoint(const LayoutPoint&, unsigned topPadding, unsigned rightPadding, unsigned bottomPadding, unsigned leftPadding);
55 int topPadding() const { return roundedPoint().y() - m_boundingBox.y(); }
56 int rightPadding() const { return m_boundingBox.maxX() - roundedPoint().x() - 1; }
57 int bottomPadding() const { return m_boundingBox.maxY() - roundedPoint().y() - 1; }
58 int leftPadding() const { return roundedPoint().x() - m_boundingBox.x(); }
59
60 bool intersects(const LayoutRect&) const;
61 bool intersects(const FloatRect&) const;
62 bool intersects(const RoundedRect&) const;
63
64 const FloatPoint& transformedPoint() const { return m_transformedPoint; }
65 const FloatQuad& transformedRect() const { return m_transformedRect; }
66
67private:
68 template<typename RectType>
69 bool intersectsRect(const RectType&) const;
70 void move(const LayoutSize& offset);
71
72 // This is cached forms of the more accurate point and area below.
73 LayoutPoint m_point;
74 IntRect m_boundingBox;
75
76 FloatPoint m_transformedPoint;
77 FloatQuad m_transformedRect;
78
79 bool m_isRectBased;
80 bool m_isRectilinear;
81};
82
83} // namespace WebCore
84