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1 /* | 1 /* |
2 * Copyright (C) 2012 Apple Inc. All rights reserved. | 2 * Copyright (C) 2012 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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117 } | 117 } |
118 // Return the last column set or spanner placeholder. | 118 // Return the last column set or spanner placeholder. |
119 RenderBox* lastMultiColumnBox() const | 119 RenderBox* lastMultiColumnBox() const |
120 { | 120 { |
121 RenderBox* lastSiblingBox = multiColumnBlockFlow()->lastChildBox(); | 121 RenderBox* lastSiblingBox = multiColumnBlockFlow()->lastChildBox(); |
122 // The flow thread is the first child of the multicol container. If the
flow thread is also | 122 // The flow thread is the first child of the multicol container. If the
flow thread is also |
123 // the last child, it means that there are no siblings; i.e. we have no
column boxes. | 123 // the last child, it means that there are no siblings; i.e. we have no
column boxes. |
124 return lastSiblingBox != this ? lastSiblingBox : 0; | 124 return lastSiblingBox != this ? lastSiblingBox : 0; |
125 } | 125 } |
126 | 126 |
| 127 // Find the first set inside which the specified renderer would be rendered. |
| 128 RenderMultiColumnSet* findSetRendering(RenderObject*) const; |
| 129 |
127 // Return the spanner placeholder that belongs to the spanner in the contain
ing block chain, if | 130 // Return the spanner placeholder that belongs to the spanner in the contain
ing block chain, if |
128 // any. This includes the renderer for the element that actually establishes
the spanner too. | 131 // any. This includes the renderer for the element that actually establishes
the spanner too. |
129 RenderMultiColumnSpannerPlaceholder* containingColumnSpannerPlaceholder(cons
t RenderObject* descendant) const; | 132 RenderMultiColumnSpannerPlaceholder* containingColumnSpannerPlaceholder(cons
t RenderObject* descendant) const; |
130 | 133 |
131 // Populate the flow thread with what's currently its siblings. Called when
a regular block | 134 // Populate the flow thread with what's currently its siblings. Called when
a regular block |
132 // becomes a multicol container. | 135 // becomes a multicol container. |
133 void populate(); | 136 void populate(); |
134 | 137 |
135 // Empty the flow thread by moving everything to the parent. Remove all mult
icol specific | 138 // Empty the flow thread by moving everything to the parent. Remove all mult
icol specific |
136 // renderers. Then destroy the flow thread. Called when a multicol container
becomes a regular | 139 // renderers. Then destroy the flow thread. Called when a multicol container
becomes a regular |
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189 LayoutUnit m_columnHeightAvailable; // Total height available to columns, or
0 if auto. | 192 LayoutUnit m_columnHeightAvailable; // Total height available to columns, or
0 if auto. |
190 bool m_inBalancingPass; // Set when relayouting for column balancing. | 193 bool m_inBalancingPass; // Set when relayouting for column balancing. |
191 bool m_needsColumnHeightsRecalculation; // Set when we need to recalculate t
he column set heights after layout. | 194 bool m_needsColumnHeightsRecalculation; // Set when we need to recalculate t
he column set heights after layout. |
192 bool m_progressionIsInline; // Always true for regular multicol. False for p
aged-y overflow. | 195 bool m_progressionIsInline; // Always true for regular multicol. False for p
aged-y overflow. |
193 bool m_isBeingEvacuated; | 196 bool m_isBeingEvacuated; |
194 }; | 197 }; |
195 | 198 |
196 } // namespace blink | 199 } // namespace blink |
197 | 200 |
198 #endif // RenderMultiColumnFlowThread_h | 201 #endif // RenderMultiColumnFlowThread_h |
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