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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/*
* Copyright (C) 2011, 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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 CSSCalculationValue_h
#define CSSCalculationValue_h
#include "CSSParserValues.h"
#include "CSSPrimitiveValue.h"
#include "CSSValue.h"
#include "CalculationValue.h"
#include <wtf/PassOwnPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
namespace WebCore {
class CSSParserValueList;
class CSSValueList;
class CalculationValue;
class CalcExpressionNode;
class RenderStyle;
struct Length;
enum CalculationCategory {
CalcNumber = 0,
CalcLength,
CalcPercent,
CalcPercentNumber,
CalcPercentLength,
CalcAngle,
CalcTime,
CalcFrequency,
#if ENABLE(CSS_VARIABLES)
CalcVariable,
#endif
CalcOther
};
class CSSCalcExpressionNode : public RefCounted<CSSCalcExpressionNode> {
public:
enum Type {
CssCalcPrimitiveValue = 1,
CssCalcBinaryOperation
};
virtual ~CSSCalcExpressionNode() = 0;
virtual bool isZero() const = 0;
virtual PassOwnPtr<CalcExpressionNode> toCalcValue(const RenderStyle*, const RenderStyle* rootStyle, double zoom = 1.0) const = 0;
virtual double doubleValue() const = 0;
virtual double computeLengthPx(const RenderStyle* currentStyle, const RenderStyle* rootStyle, double multiplier = 1.0, bool computingFontSize = false) const = 0;
virtual String customCssText() const = 0;
#if ENABLE(CSS_VARIABLES)
virtual String serializeResolvingVariables(const HashMap<AtomicString, String>&) const = 0;
virtual bool hasVariableReference() const = 0;
#endif
virtual bool equals(const CSSCalcExpressionNode& other) const { return m_category == other.m_category && m_isInteger == other.m_isInteger; }
virtual Type type() const = 0;
CalculationCategory category() const { return m_category; }
virtual CSSPrimitiveValue::UnitTypes primitiveType() const = 0;
bool isInteger() const { return m_isInteger; }
protected:
CSSCalcExpressionNode(CalculationCategory category, bool isInteger)
: m_category(category)
, m_isInteger(isInteger)
{
}
CalculationCategory m_category;
bool m_isInteger;
};
class CSSCalcValue : public CSSValue {
public:
static PassRefPtr<CSSCalcValue> create(CSSParserString name, CSSParserValueList*, CalculationPermittedValueRange);
static PassRefPtr<CSSCalcValue> create(PassRefPtr<CSSCalcExpressionNode>, CalculationPermittedValueRange = CalculationRangeAll);
static PassRefPtr<CSSCalcValue> create(const CalculationValue* value, const RenderStyle* style) { return adoptRef(new CSSCalcValue(value, style)); }
static PassRefPtr<CSSCalcExpressionNode> createExpressionNode(PassRefPtr<CSSPrimitiveValue>, bool isInteger = false);
static PassRefPtr<CSSCalcExpressionNode> createExpressionNode(PassRefPtr<CSSCalcExpressionNode>, PassRefPtr<CSSCalcExpressionNode>, CalcOperator);
static PassRefPtr<CSSCalcExpressionNode> createExpressionNode(const CalcExpressionNode*, const RenderStyle*);
static PassRefPtr<CSSCalcExpressionNode> createExpressionNode(const Length&, const RenderStyle*);
PassRefPtr<CalculationValue> toCalcValue(const RenderStyle* style, const RenderStyle* rootStyle, double zoom = 1.0) const
{
return CalculationValue::create(m_expression->toCalcValue(style, rootStyle, zoom), m_nonNegative ? CalculationRangeNonNegative : CalculationRangeAll);
}
CalculationCategory category() const { return m_expression->category(); }
bool isInt() const { return m_expression->isInteger(); }
double doubleValue() const;
bool isNegative() const { return m_expression->doubleValue() < 0; }
CalculationPermittedValueRange permittedValueRange() { return m_nonNegative ? CalculationRangeNonNegative : CalculationRangeAll; }
double computeLengthPx(const RenderStyle* currentStyle, const RenderStyle* rootStyle, double multiplier = 1.0, bool computingFontSize = false) const;
CSSCalcExpressionNode* expressionNode() const { return m_expression.get(); }
String customCssText() const;
bool equals(const CSSCalcValue&) const;
#if ENABLE(CSS_VARIABLES)
String customSerializeResolvingVariables(const HashMap<AtomicString, String>&) const;
bool hasVariableReference() const;
#endif
private:
CSSCalcValue(PassRefPtr<CSSCalcExpressionNode> expression, CalculationPermittedValueRange range)
: CSSValue(CalculationClass)
, m_expression(expression)
, m_nonNegative(range == CalculationRangeNonNegative)
{
}
CSSCalcValue(const CalculationValue* value, const RenderStyle* style)
: CSSValue(CalculationClass)
, m_expression(createExpressionNode(value->expression(), style))
, m_nonNegative(value->isNonNegative())
{
}
double clampToPermittedRange(double) const;
const RefPtr<CSSCalcExpressionNode> m_expression;
const bool m_nonNegative;
};
inline CSSCalcValue* toCSSCalcValue(CSSValue* value)
{
ASSERT_WITH_SECURITY_IMPLICATION(!value || value->isCalculationValue());
return static_cast<CSSCalcValue*>(value);
}
inline const CSSCalcValue* toCSSCalcValue(const CSSValue* value)
{
ASSERT_WITH_SECURITY_IMPLICATION(!value || value->isCalculationValue());
return static_cast<const CSSCalcValue*>(value);
}
} // namespace WebCore
#endif // CSSCalculationValue_h
|
