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Side by Side Diff: third_party/WebKit/Source/core/css/cssom/StyleCalcLength.cpp

Issue 1949343002: [Obsolete] Typed CSSOM: Prefix LengthValue, CalcLength and SimpleLength with "CSS" (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: rename layout test files Created 4 years, 7 months ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "core/css/cssom/StyleCalcLength.h"
6
7 #include "core/css/CSSCalculationValue.h"
8 #include "core/css/CSSPrimitiveValue.h"
9 #include "core/css/cssom/CalcDictionary.h"
10 #include "core/css/cssom/SimpleLength.h"
11 #include "wtf/Vector.h"
12
13 namespace blink {
14
15 StyleCalcLength::StyleCalcLength() : m_values(LengthValue::kNumSupportedUnits), m_hasValues(LengthValue::kNumSupportedUnits) {}
16
17 StyleCalcLength::StyleCalcLength(const StyleCalcLength& other) :
18 m_values(other.m_values),
19 m_hasValues(other.m_hasValues)
20 {}
21
22 StyleCalcLength::StyleCalcLength(const SimpleLength& other) :
23 m_values(LengthValue::kNumSupportedUnits), m_hasValues(LengthValue::kNumSupp ortedUnits)
24 {
25 set(other.value(), other.lengthUnit());
26 }
27
28 StyleCalcLength* StyleCalcLength::create(const LengthValue* length)
29 {
30 if (length->type() == SimpleLengthType) {
31 const SimpleLength* simpleLength = toSimpleLength(length);
32 return new StyleCalcLength(*simpleLength);
33 }
34
35 return new StyleCalcLength(*toStyleCalcLength(length));
36 }
37
38 StyleCalcLength* StyleCalcLength::create(const CalcDictionary& dictionary, Excep tionState& exceptionState)
39 {
40 StyleCalcLength* result = new StyleCalcLength();
41 int numSet = 0;
42
43 #define setFromDictValue(name, camelName, primitiveName) \
44 if (dictionary.has##camelName()) { \
45 result->set(dictionary.name(), CSSPrimitiveValue::UnitType::primitiveNam e); \
46 numSet++; \
47 }
48
49 setFromDictValue(px, Px, Pixels)
50 setFromDictValue(percent, Percent, Percentage)
51 setFromDictValue(em, Em, Ems)
52 setFromDictValue(ex, Ex, Exs)
53 setFromDictValue(ch, Ch, Chs)
54 setFromDictValue(rem, Rem, Rems)
55 setFromDictValue(vw, Vw, ViewportWidth)
56 setFromDictValue(vh, Vh, ViewportHeight)
57 setFromDictValue(vmin, Vmin, ViewportMin)
58 setFromDictValue(vmax, Vmax, ViewportMax)
59 setFromDictValue(cm, Cm, Centimeters)
60 setFromDictValue(mm, Mm, Millimeters)
61 setFromDictValue(in, In, Inches)
62 setFromDictValue(pc, Pc, Picas)
63 setFromDictValue(pt, Pt, Points)
64
65 if (numSet == 0) {
66 exceptionState.throwTypeError("Must specify at least one value in CalcDi ctionary for creating a CalcLength.");
67 }
68 return result;
69 }
70
71 bool StyleCalcLength::containsPercent() const
72 {
73 return has(CSSPrimitiveValue::UnitType::Percentage);
74 }
75
76 LengthValue* StyleCalcLength::addInternal(const LengthValue* other, ExceptionSta te& exceptionState)
77 {
78 StyleCalcLength* result = StyleCalcLength::create(other, exceptionState);
79 for (int i = 0; i < LengthValue::kNumSupportedUnits; ++i) {
80 if (hasAtIndex(i)) {
81 result->setAtIndex(getAtIndex(i) + result->getAtIndex(i), i);
82 }
83 }
84 return result;
85 }
86
87 LengthValue* StyleCalcLength::subtractInternal(const LengthValue* other, Excepti onState& exceptionState)
88 {
89 StyleCalcLength* result = StyleCalcLength::create(this, exceptionState);
90 if (other->type() == CalcLengthType) {
91 const StyleCalcLength* o = toStyleCalcLength(other);
92 for (unsigned i = 0; i < LengthValue::kNumSupportedUnits; ++i) {
93 if (o->hasAtIndex(i)) {
94 result->setAtIndex(getAtIndex(i) - o->getAtIndex(i), i);
95 }
96 }
97 } else {
98 const SimpleLength* o = toSimpleLength(other);
99 result->set(get(o->lengthUnit()) - o->value(), o->lengthUnit());
100 }
101 return result;
102 }
103
104 LengthValue* StyleCalcLength::multiplyInternal(double x, ExceptionState& excepti onState)
105 {
106 StyleCalcLength* result = StyleCalcLength::create(this, exceptionState);
107 for (unsigned i = 0; i < LengthValue::kNumSupportedUnits; ++i) {
108 if (hasAtIndex(i)) {
109 result->setAtIndex(getAtIndex(i) * x, i);
110 }
111 }
112 return result;
113 }
114
115 LengthValue* StyleCalcLength::divideInternal(double x, ExceptionState& exception State)
116 {
117 StyleCalcLength* result = StyleCalcLength::create(this, exceptionState);
118 for (unsigned i = 0; i < LengthValue::kNumSupportedUnits; ++i) {
119 if (hasAtIndex(i)) {
120 result->setAtIndex(getAtIndex(i) / x, i);
121 }
122 }
123 return result;
124 }
125
126 CSSValue* StyleCalcLength::toCSSValue() const
127 {
128 // Create a CSS Calc Value, then put it into a CSSPrimitiveValue
129 CSSCalcExpressionNode* node = nullptr;
130 for (unsigned i = 0; i < LengthValue::kNumSupportedUnits; ++i) {
131 if (!hasAtIndex(i))
132 continue;
133 double value = getAtIndex(i);
134 if (node) {
135 node = CSSCalcValue::createExpressionNode(
136 node,
137 CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create(std ::abs(value), unitFromIndex(i))),
138 value >= 0 ? CalcAdd : CalcSubtract);
139 } else {
140 node = CSSCalcValue::createExpressionNode(CSSPrimitiveValue::create( value, unitFromIndex(i)));
141 }
142 }
143 return CSSPrimitiveValue::create(CSSCalcValue::create(node));
144 }
145
146 int StyleCalcLength::indexForUnit(CSSPrimitiveValue::UnitType unit)
147 {
148 return (static_cast<int>(unit) - static_cast<int>(CSSPrimitiveValue::UnitTyp e::Percentage));
149 }
150
151 } // namespace blink
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