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Side by Side Diff: Source/core/html/forms/StepRange.h

Issue 1306413003: Make classes and structures in core/html fast-allocated. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 5 years, 4 months ago
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1 /* 1 /*
2 * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved. 2 * Copyright (C) 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
3 * 3 *
4 * This library is free software; you can redistribute it and/or 4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public 5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either 6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version. 7 * version 2 of the License, or (at your option) any later version.
8 * 8 *
9 * This library is distributed in the hope that it will be useful, 9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details. 12 * Library General Public License for more details.
13 * 13 *
14 * You should have received a copy of the GNU Library General Public License 14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to 15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA. 17 * Boston, MA 02110-1301, USA.
18 * 18 *
19 */ 19 */
20 20
21 #ifndef StepRange_h 21 #ifndef StepRange_h
22 #define StepRange_h 22 #define StepRange_h
23 23
24 #include "platform/Decimal.h" 24 #include "platform/Decimal.h"
25 #include "wtf/Allocator.h"
25 #include "wtf/Forward.h" 26 #include "wtf/Forward.h"
26 27
27 namespace blink { 28 namespace blink {
28 29
29 enum AnyStepHandling { RejectAny, AnyIsDefaultStep }; 30 enum AnyStepHandling { RejectAny, AnyIsDefaultStep };
30 31
31 class StepRange { 32 class StepRange {
33 DISALLOW_ALLOCATION();
32 public: 34 public:
33 enum StepValueShouldBe { 35 enum StepValueShouldBe {
34 StepValueShouldBeReal, 36 StepValueShouldBeReal,
35 ParsedStepValueShouldBeInteger, 37 ParsedStepValueShouldBeInteger,
36 ScaledStepValueShouldBeInteger, 38 ScaledStepValueShouldBeInteger,
37 }; 39 };
38 40
39 struct StepDescription { 41 struct StepDescription {
40 WTF_MAKE_FAST_ALLOCATED(StepDescription); 42 WTF_MAKE_FAST_ALLOCATED(StepDescription);
41 public: 43 public:
(...skipping 52 matching lines...) Expand 10 before | Expand all | Expand 10 after
94 return (value - m_minimum) / (m_maximum - m_minimum); 96 return (value - m_minimum) / (m_maximum - m_minimum);
95 } 97 }
96 98
97 // Map from 0-1 range to value 99 // Map from 0-1 range to value
98 Decimal valueFromProportion(const Decimal& proportion) const 100 Decimal valueFromProportion(const Decimal& proportion) const
99 { 101 {
100 return m_minimum + proportion * (m_maximum - m_minimum); 102 return m_minimum + proportion * (m_maximum - m_minimum);
101 } 103 }
102 104
103 private: 105 private:
104 StepRange& operator =(const StepRange&); 106 StepRange& operator=(const StepRange&) = delete;
105 Decimal acceptableError() const; 107 Decimal acceptableError() const;
106 Decimal roundByStep(const Decimal& value, const Decimal& base) const; 108 Decimal roundByStep(const Decimal& value, const Decimal& base) const;
107 109
108 const Decimal m_maximum; // maximum must be >= minimum. 110 const Decimal m_maximum; // maximum must be >= minimum.
109 const Decimal m_minimum; 111 const Decimal m_minimum;
110 const Decimal m_step; 112 const Decimal m_step;
111 const Decimal m_stepBase; 113 const Decimal m_stepBase;
112 const StepDescription m_stepDescription; 114 const StepDescription m_stepDescription;
113 const bool m_hasStep; 115 const bool m_hasStep;
114 }; 116 };
115 117
116 } 118 }
117 119
118 #endif // StepRange_h 120 #endif // StepRange_h
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