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
|
/*
* Copyright (C) 2010 Alex Milowski (alex@milowski.com). 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
* OWNER 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 RenderMathMLOperator_h
#define RenderMathMLOperator_h
#if ENABLE(MATHML)
#include "RenderMathMLBlock.h"
#include <wtf/unicode/CharacterNames.h>
namespace WebCore {
class RenderMathMLOperator : public RenderMathMLBlock {
public:
RenderMathMLOperator(Element*);
RenderMathMLOperator(Element*, UChar operatorChar);
virtual bool isRenderMathMLOperator() const { return true; }
virtual bool isChildAllowed(RenderObject*, RenderStyle*) const;
virtual void updateFromElement() OVERRIDE;
virtual RenderMathMLOperator* unembellishedOperator() OVERRIDE { return this; }
void stretchToHeight(int pixelHeight);
virtual int firstLineBoxBaseline() const OVERRIDE;
enum OperatorType { Default, Separator, Fence };
void setOperatorType(OperatorType type) { m_operatorType = type; }
OperatorType operatorType() const { return m_operatorType; }
protected:
virtual void computePreferredLogicalWidths() OVERRIDE;
PassRefPtr<RenderStyle> createStackableStyle(int maxHeightForRenderer);
RenderBlock* createGlyph(UChar glyph, int maxHeightForRenderer, int charRelative);
private:
virtual const char* renderName() const { return isAnonymous() ? "RenderMathMLOperator (anonymous)" : "RenderMathMLOperator"; }
int glyphHeightForCharacter(UChar);
virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
int m_stretchHeight;
bool m_isStacked;
UChar m_operator;
OperatorType m_operatorType;
};
inline RenderMathMLOperator* toRenderMathMLOperator(RenderMathMLBlock* block)
{
ASSERT_WITH_SECURITY_IMPLICATION(!block || block->isRenderMathMLOperator());
return static_cast<RenderMathMLOperator*>(block);
}
inline const RenderMathMLOperator* toRenderMathMLOperator(const RenderMathMLBlock* block)
{
ASSERT_WITH_SECURITY_IMPLICATION(!block || block->isRenderMathMLOperator());
return static_cast<const RenderMathMLOperator*>(block);
}
// This will catch anyone doing an unnecessary cast.
void toRenderMathMLOperator(const RenderMathMLOperator*);
inline UChar convertHyphenMinusToMinusSign(UChar glyph)
{
// When rendered as a mathematical operator, minus glyph should be larger.
if (glyph == hyphenMinus)
return minusSign;
return glyph;
}
}
#endif // ENABLE(MATHML)
#endif // RenderMathMLOperator_h
|
