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| 1 /* | |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #ifndef GridPosition_h | |
| 32 #define GridPosition_h | |
| 33 | |
| 34 #include "wtf/text/WTFString.h" | |
| 35 | |
| 36 namespace blink { | |
| 37 | |
| 38 enum GridPositionType { | |
| 39 AutoPosition, | |
| 40 ExplicitPosition, // [ <integer> || <string> ] | |
| 41 SpanPosition, // span && [ <integer> || <string> ] | |
| 42 NamedGridAreaPosition // <ident> | |
| 43 }; | |
| 44 | |
| 45 class GridPosition { | |
| 46 public: | |
| 47 GridPosition() | |
| 48 : m_type(AutoPosition) | |
| 49 , m_integerPosition(0) | |
| 50 { | |
| 51 } | |
| 52 | |
| 53 bool isPositive() const { return integerPosition() > 0; } | |
| 54 | |
| 55 GridPositionType type() const { return m_type; } | |
| 56 bool isAuto() const { return m_type == AutoPosition; } | |
| 57 bool isSpan() const { return m_type == SpanPosition; } | |
| 58 bool isNamedGridArea() const { return m_type == NamedGridAreaPosition; } | |
| 59 | |
| 60 void setExplicitPosition(int position, const String& namedGridLine) | |
| 61 { | |
| 62 m_type = ExplicitPosition; | |
| 63 m_integerPosition = position; | |
| 64 m_namedGridLine = namedGridLine; | |
| 65 } | |
| 66 | |
| 67 void setAutoPosition() | |
| 68 { | |
| 69 m_type = AutoPosition; | |
| 70 m_integerPosition = 0; | |
| 71 } | |
| 72 | |
| 73 // 'span' values cannot be negative, yet we reuse the <integer> position whi
ch can | |
| 74 // be. This means that we have to convert the span position to an integer, l
osing | |
| 75 // some precision here. It shouldn't be an issue in practice though. | |
| 76 void setSpanPosition(int position, const String& namedGridLine) | |
| 77 { | |
| 78 m_type = SpanPosition; | |
| 79 m_integerPosition = position; | |
| 80 m_namedGridLine = namedGridLine; | |
| 81 } | |
| 82 | |
| 83 void setNamedGridArea(const String& namedGridArea) | |
| 84 { | |
| 85 m_type = NamedGridAreaPosition; | |
| 86 m_namedGridLine = namedGridArea; | |
| 87 } | |
| 88 | |
| 89 int integerPosition() const | |
| 90 { | |
| 91 ASSERT(type() == ExplicitPosition); | |
| 92 return m_integerPosition; | |
| 93 } | |
| 94 | |
| 95 String namedGridLine() const | |
| 96 { | |
| 97 ASSERT(type() == ExplicitPosition || type() == SpanPosition || type() ==
NamedGridAreaPosition); | |
| 98 return m_namedGridLine; | |
| 99 } | |
| 100 | |
| 101 int spanPosition() const | |
| 102 { | |
| 103 ASSERT(type() == SpanPosition); | |
| 104 return m_integerPosition; | |
| 105 } | |
| 106 | |
| 107 bool operator==(const GridPosition& other) const | |
| 108 { | |
| 109 return m_type == other.m_type && m_integerPosition == other.m_integerPos
ition && m_namedGridLine == other.m_namedGridLine; | |
| 110 } | |
| 111 | |
| 112 bool shouldBeResolvedAgainstOppositePosition() const | |
| 113 { | |
| 114 return isAuto() || isSpan(); | |
| 115 } | |
| 116 private: | |
| 117 GridPositionType m_type; | |
| 118 int m_integerPosition; | |
| 119 String m_namedGridLine; | |
| 120 }; | |
| 121 | |
| 122 } // namespace blink | |
| 123 | |
| 124 #endif // GridPosition_h | |
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Chromium Code Reviews
Issue 1045723009:
Move core/layout/style to core/style (Closed)
Base URL: svn://svn.chromium.org/blink/trunk