1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
/*
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FloatRoundedRect_h
#define FloatRoundedRect_h
#include <WebCore/CornerRadii.h>
#include <WebCore/FloatRect.h>
#include <WebCore/FloatSize.h>
#include <WebCore/LayoutRoundedRect.h>
#include <WebCore/Region.h>
#include <wtf/TZoneMalloc.h>
#if USE(SKIA)
class SkRRect;
#endif
namespace WebCore {
class Path;
class FloatRoundedRect {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(FloatRoundedRect, WEBCORE_EXPORT);
public:
WEBCORE_EXPORT explicit FloatRoundedRect(const FloatRect& = FloatRect(), const CornerRadii& = CornerRadii());
WEBCORE_EXPORT FloatRoundedRect(const FloatRect&, const FloatSize& topLeft, const FloatSize& topRight, const FloatSize& bottomLeft, const FloatSize& bottomRight);
explicit FloatRoundedRect(const LayoutRoundedRect&);
FloatRoundedRect(float x, float y, float width, float height);
const FloatRect& rect() const { return m_rect; }
const CornerRadii& radii() const { return m_radii; }
bool isRounded() const { return !m_radii.isZero(); }
bool isEmpty() const { return m_rect.isEmpty(); }
void setRect(const FloatRect& rect) { m_rect = rect; }
void setLocation(FloatPoint location) { m_rect.setLocation(location); }
void setRadii(const CornerRadii& radii) { m_radii = radii; }
void move(const FloatSize& size) { m_rect.move(size); }
void inflate(float size) { m_rect.inflate(size); }
void expandRadii(float size) { m_radii.expand(size); }
void shrinkRadii(float size) { m_radii.shrink(size); }
void inflateWithRadii(float size);
void adjustRadii();
FloatRect topLeftCorner() const
{
return FloatRect(m_rect.x(), m_rect.y(), m_radii.topLeft().width(), m_radii.topLeft().height());
}
FloatRect topRightCorner() const
{
return FloatRect(m_rect.maxX() - m_radii.topRight().width(), m_rect.y(), m_radii.topRight().width(), m_radii.topRight().height());
}
FloatRect bottomLeftCorner() const
{
return FloatRect(m_rect.x(), m_rect.maxY() - m_radii.bottomLeft().height(), m_radii.bottomLeft().width(), m_radii.bottomLeft().height());
}
FloatRect bottomRightCorner() const
{
return FloatRect(m_rect.maxX() - m_radii.bottomRight().width(), m_rect.maxY() - m_radii.bottomRight().height(), m_radii.bottomRight().width(), m_radii.bottomRight().height());
}
bool isRenderable() const;
bool xInterceptsAtY(float y, float& minXIntercept, float& maxXIntercept) const;
bool intersectionIsRectangular(const FloatRect&) const;
Path path() const;
friend bool operator==(const FloatRoundedRect&, const FloatRoundedRect&) = default;
#if USE(SKIA)
FloatRoundedRect(const SkRRect&);
operator SkRRect() const;
#endif
private:
FloatRect m_rect;
CornerRadii m_radii;
};
inline float calcBorderRadiiConstraintScaleFor(const FloatRect& rect, const CornerRadii& radii)
{
// Constrain corner radii using CSS3 rules:
// http://www.w3.org/TR/css3-background/#the-border-radius
float factor = 1;
float radiiSum;
// top
radiiSum = radii.topLeft().width() + radii.topRight().width(); // Casts to avoid integer overflow.
if (radiiSum > rect.width())
factor = std::min(rect.width() / radiiSum, factor);
// bottom
radiiSum = radii.bottomLeft().width() + radii.bottomRight().width();
if (radiiSum > rect.width())
factor = std::min(rect.width() / radiiSum, factor);
// left
radiiSum = radii.topLeft().height() + radii.bottomLeft().height();
if (radiiSum > rect.height())
factor = std::min(rect.height() / radiiSum, factor);
// right
radiiSum = radii.topRight().height() + radii.bottomRight().height();
if (radiiSum > rect.height())
factor = std::min(rect.height() / radiiSum, factor);
ASSERT(factor <= 1);
return factor;
}
WEBCORE_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, const FloatRoundedRect&);
// Snip away rectangles from corners, roughly one per step length of arc.
WEBCORE_EXPORT Region approximateAsRegion(const FloatRoundedRect&, unsigned stepLength = 20);
} // namespace WebCore
#endif // FloatRoundedRect_h
|
