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
|
/*
* 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 RasterShape_h
#define RasterShape_h
#include "core/rendering/shapes/Shape.h"
#include "core/rendering/shapes/ShapeInterval.h"
#include "platform/geometry/FloatRect.h"
#include "wtf/Assertions.h"
#include "wtf/Vector.h"
namespace WebCore {
class RasterShapeIntervals {
public:
RasterShapeIntervals(unsigned size, unsigned shapeMargin = 0)
: m_shapeMargin(shapeMargin)
{
m_intervalLists.resize(size + shapeMargin * 2);
}
const IntRect& bounds() const { return m_bounds; }
bool isEmpty() const { return m_bounds.isEmpty(); }
void appendInterval(int y, int x1, int x2);
void getIncludedIntervals(int y1, int y2, IntShapeIntervals& result) const;
void getExcludedIntervals(int y1, int y2, IntShapeIntervals& result) const;
bool firstIncludedIntervalY(int minY, const IntSize& minSize, LayoutUnit& result) const;
PassOwnPtr<RasterShapeIntervals> computeShapeMarginIntervals(unsigned shapeMargin) const;
private:
int size() const { return m_intervalLists.size(); }
IntShapeIntervals& intervalsAt(int y)
{
ASSERT(y + m_shapeMargin >= 0 && y + m_shapeMargin < m_intervalLists.size());
return m_intervalLists[y + m_shapeMargin];
}
const IntShapeIntervals& intervalsAt(int y) const
{
ASSERT(y + m_shapeMargin >= 0 && y + m_shapeMargin < m_intervalLists.size());
return m_intervalLists[y + m_shapeMargin];
}
IntShapeInterval limitIntervalAt(int y) const
{
const IntShapeIntervals& intervals = intervalsAt(y);
return intervals.size() ? IntShapeInterval(intervals[0].x1(), intervals.last().x2()) : IntShapeInterval();
}
bool contains(const IntRect&) const;
bool getIntervalX1Values(int minY, int maxY, int minIntervalWidth, Vector<int>& result) const;
void uniteMarginInterval(int y, const IntShapeInterval&);
IntRect m_bounds;
Vector<IntShapeIntervals> m_intervalLists;
unsigned m_shapeMargin;
};
class RasterShape : public Shape {
WTF_MAKE_NONCOPYABLE(RasterShape);
public:
RasterShape(PassOwnPtr<RasterShapeIntervals> intervals, const IntSize& imageSize)
: Shape()
, m_intervals(intervals)
, m_imageSize(imageSize)
{
}
virtual LayoutRect shapeMarginLogicalBoundingBox() const OVERRIDE { return static_cast<LayoutRect>(marginIntervals().bounds()); }
virtual LayoutRect shapePaddingLogicalBoundingBox() const OVERRIDE { return static_cast<LayoutRect>(paddingIntervals().bounds()); }
virtual bool isEmpty() const OVERRIDE { return m_intervals->isEmpty(); }
virtual void getExcludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const OVERRIDE;
virtual void getIncludedIntervals(LayoutUnit logicalTop, LayoutUnit logicalHeight, SegmentList&) const OVERRIDE;
virtual bool firstIncludedIntervalLogicalTop(LayoutUnit minLogicalIntervalTop, const LayoutSize& minLogicalIntervalSize, LayoutUnit&) const OVERRIDE;
private:
const RasterShapeIntervals& marginIntervals() const;
const RasterShapeIntervals& paddingIntervals() const;
OwnPtr<RasterShapeIntervals> m_intervals;
mutable OwnPtr<RasterShapeIntervals> m_marginIntervals;
IntSize m_imageSize;
};
} // namespace WebCore
#endif // RasterShape_h
|
