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 #include "config.h"
32 #include "platform/LengthBox.h"
33
34 namespace WebCore {
35
logicalLeft(WritingMode writingMode) const36 const Length& LengthBox::logicalLeft(WritingMode writingMode) const
37 {
38 return isHorizontalWritingMode(writingMode) ? m_left : m_top;
39 }
40
logicalRight(WritingMode writingMode) const41 const Length& LengthBox::logicalRight(WritingMode writingMode) const
42 {
43 return isHorizontalWritingMode(writingMode) ? m_right : m_bottom;
44 }
45
before(WritingMode writingMode) const46 const Length& LengthBox::before(WritingMode writingMode) const
47 {
48 switch (writingMode) {
49 case TopToBottomWritingMode:
50 return m_top;
51 case BottomToTopWritingMode:
52 return m_bottom;
53 case LeftToRightWritingMode:
54 return m_left;
55 case RightToLeftWritingMode:
56 return m_right;
57 }
58 ASSERT_NOT_REACHED();
59 return m_top;
60 }
61
after(WritingMode writingMode) const62 const Length& LengthBox::after(WritingMode writingMode) const
63 {
64 switch (writingMode) {
65 case TopToBottomWritingMode:
66 return m_bottom;
67 case BottomToTopWritingMode:
68 return m_top;
69 case LeftToRightWritingMode:
70 return m_right;
71 case RightToLeftWritingMode:
72 return m_left;
73 }
74 ASSERT_NOT_REACHED();
75 return m_bottom;
76 }
77
start(WritingMode writingMode,TextDirection direction) const78 const Length& LengthBox::start(WritingMode writingMode, TextDirection direction) const
79 {
80 if (isHorizontalWritingMode(writingMode))
81 return isLeftToRightDirection(direction) ? m_left : m_right;
82 return isLeftToRightDirection(direction) ? m_top : m_bottom;
83 }
84
end(WritingMode writingMode,TextDirection direction) const85 const Length& LengthBox::end(WritingMode writingMode, TextDirection direction) const
86 {
87 if (isHorizontalWritingMode(writingMode))
88 return isLeftToRightDirection(direction) ? m_right : m_left;
89 return isLeftToRightDirection(direction) ? m_bottom : m_top;
90 }
91
92 } // namespace WebCore
93