Remove dependency on RenderStyle from FractionalLayoutBoxExtent and LayoutBox
[WebKit-https.git] / Source / WebCore / platform / graphics / FractionalLayoutBoxExtent.cpp
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 "FractionalLayoutBoxExtent.h"
33
34 namespace WebCore {
35
36 FractionalLayoutUnit FractionalLayoutBoxExtent::logicalTop(WritingMode writingMode) const
37 {
38     return isHorizontalWritingMode(writingMode) ? m_top : m_left;
39 }
40
41 FractionalLayoutUnit FractionalLayoutBoxExtent::logicalBottom(WritingMode writingMode) const
42 {
43     return isHorizontalWritingMode(writingMode) ? m_bottom : m_right;
44 }
45
46 FractionalLayoutUnit FractionalLayoutBoxExtent::logicalLeft(WritingMode writingMode) const
47 {
48     return isHorizontalWritingMode(writingMode) ? m_left : m_top;
49 }
50
51 FractionalLayoutUnit FractionalLayoutBoxExtent::logicalRight(WritingMode writingMode) const
52 {
53     return isHorizontalWritingMode(writingMode) ? m_right : m_bottom;
54 }
55
56 FractionalLayoutUnit FractionalLayoutBoxExtent::before(WritingMode writingMode) const
57 {
58     switch (writingMode) {
59     case TopToBottomWritingMode:
60         return m_top;
61     case BottomToTopWritingMode:
62         return m_bottom;
63     case LeftToRightWritingMode:
64         return m_left;
65     case RightToLeftWritingMode:
66         return m_right;
67     }
68     ASSERT_NOT_REACHED();
69     return m_top;
70 }
71
72 FractionalLayoutUnit FractionalLayoutBoxExtent::after(WritingMode writingMode) const
73 {
74     switch (writingMode) {
75     case TopToBottomWritingMode:
76         return m_bottom;
77     case BottomToTopWritingMode:
78         return m_top;
79     case LeftToRightWritingMode:
80         return m_right;
81     case RightToLeftWritingMode:
82         return m_left;
83     }
84     ASSERT_NOT_REACHED();
85     return m_bottom;
86 }
87
88 FractionalLayoutUnit FractionalLayoutBoxExtent::start(WritingMode writingMode, TextDirection direction) const
89 {
90     if (isHorizontalWritingMode(writingMode))
91         return isLeftToRightDirection(direction) ? m_left : m_right;
92     return isLeftToRightDirection(direction) ? m_top : m_bottom;
93 }
94
95 FractionalLayoutUnit FractionalLayoutBoxExtent::end(WritingMode writingMode, TextDirection direction) const
96 {
97     if (isHorizontalWritingMode(writingMode))
98         return isLeftToRightDirection(direction) ? m_right : m_left;
99     return isLeftToRightDirection(direction) ? m_bottom : m_top;
100 }
101
102 void FractionalLayoutBoxExtent::setBefore(WritingMode writingMode, FractionalLayoutUnit value)
103 {
104     switch (writingMode) {
105     case TopToBottomWritingMode:
106         m_top = value;
107         break;
108     case BottomToTopWritingMode:
109         m_bottom = value;
110         break;
111     case LeftToRightWritingMode:
112         m_left = value;
113         break;
114     case RightToLeftWritingMode:
115         m_right = value;
116         break;
117     default:
118         ASSERT_NOT_REACHED();
119         m_top = value;
120     }
121 }
122
123 void FractionalLayoutBoxExtent::setAfter(WritingMode writingMode, FractionalLayoutUnit value)
124 {
125     switch (writingMode) {
126     case TopToBottomWritingMode:
127         m_bottom = value;
128         break;
129     case BottomToTopWritingMode:
130         m_top = value;
131         break;
132     case LeftToRightWritingMode:
133         m_right = value;
134         break;
135     case RightToLeftWritingMode:
136         m_left = value;
137         break;
138     default:
139         ASSERT_NOT_REACHED();
140         m_bottom = value;
141     }
142 }
143
144 void FractionalLayoutBoxExtent::setStart(WritingMode writingMode, TextDirection direction, FractionalLayoutUnit value)
145 {
146     if (isHorizontalWritingMode(writingMode)) {
147         if (isLeftToRightDirection(direction))
148             m_left = value;
149         else
150             m_right = value;
151     } else {
152         if (isLeftToRightDirection(direction))
153             m_top = value;
154         else
155             m_bottom = value;
156     }
157 }
158
159 void FractionalLayoutBoxExtent::setEnd(WritingMode writingMode, TextDirection direction, FractionalLayoutUnit value)
160 {
161     if (isHorizontalWritingMode(writingMode)) {
162         if (isLeftToRightDirection(direction))
163             m_right = value;
164         else
165             m_left = value;
166     } else {
167         if (isLeftToRightDirection(direction))
168             m_bottom = value;
169         else
170             m_top = value;
171     }
172 }
173
174 FractionalLayoutUnit& FractionalLayoutBoxExtent::mutableLogicalLeft(WritingMode writingMode)
175 {
176     return isHorizontalWritingMode(writingMode) ? m_left : m_top;
177 }
178
179 FractionalLayoutUnit& FractionalLayoutBoxExtent::mutableLogicalRight(WritingMode writingMode)
180 {
181     return isHorizontalWritingMode(writingMode) ? m_right : m_bottom;
182 }
183
184 FractionalLayoutUnit& FractionalLayoutBoxExtent::mutableBefore(WritingMode writingMode)
185 {
186     return isHorizontalWritingMode(writingMode) ? (isFlippedBlocksWritingMode(writingMode) ? m_bottom : m_top) :
187                                                   (isFlippedBlocksWritingMode(writingMode) ? m_right: m_left);
188 }
189
190 FractionalLayoutUnit& FractionalLayoutBoxExtent::mutableAfter(WritingMode writingMode)
191 {
192     return isHorizontalWritingMode(writingMode) ? (isFlippedBlocksWritingMode(writingMode) ? m_top : m_bottom) :
193                                                   (isFlippedBlocksWritingMode(writingMode) ? m_left: m_right);
194 }
195
196 } // namespace WebCore