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| 1 /* | |
| 2 * Copyright (C) 2013 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 GridLength_h | |
| 32 #define GridLength_h | |
| 33 | |
| 34 #include "platform/Length.h" | |
| 35 | |
| 36 namespace blink { | |
| 37 | |
| 38 // This class wraps the <track-breadth> which can be either a <percentage>, <len
gth>, min-content, max-content | |
| 39 // or <flex>. This class avoids spreading the knowledge of <flex> throughout the
layout directory by adding | |
| 40 // an new unit to Length.h. | |
| 41 class GridLength { | |
| 42 public: | |
| 43 GridLength(const Length& length) | |
| 44 : m_length(length) | |
| 45 , m_flex(0) | |
| 46 , m_type(LengthType) | |
| 47 { | |
| 48 } | |
| 49 | |
| 50 explicit GridLength(double flex) | |
| 51 : m_flex(flex) | |
| 52 , m_type(FlexType) | |
| 53 { | |
| 54 } | |
| 55 | |
| 56 bool isLength() const { return m_type == LengthType; } | |
| 57 bool isFlex() const { return m_type == FlexType; } | |
| 58 | |
| 59 const Length& length() const { ASSERT(isLength()); return m_length; } | |
| 60 | |
| 61 double flex() const { ASSERT(isFlex()); return m_flex; } | |
| 62 | |
| 63 bool isPercentage() const { return m_type == LengthType && m_length.isPercen
t(); } | |
| 64 | |
| 65 bool operator==(const GridLength& o) const | |
| 66 { | |
| 67 return m_length == o.m_length && m_flex == o.m_flex && m_type == o.m_typ
e; | |
| 68 } | |
| 69 | |
| 70 bool isContentSized() const { return m_type == LengthType && (m_length.isAut
o() || m_length.isMinContent() || m_length.isMaxContent()); } | |
| 71 | |
| 72 private: | |
| 73 // Ideally we would put the 2 following fields in a union, but Length has a
constructor, | |
| 74 // a destructor and a copy assignment which isn't allowed. | |
| 75 Length m_length; | |
| 76 double m_flex; | |
| 77 enum GridLengthType { | |
| 78 LengthType, | |
| 79 FlexType | |
| 80 }; | |
| 81 GridLengthType m_type; | |
| 82 }; | |
| 83 | |
| 84 } // namespace blink | |
| 85 | |
| 86 #endif // GridLength_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