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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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104 unsigned usedColumnCount() const { return multiColumnFlowThread()->columnCou
nt(); } | 104 unsigned usedColumnCount() const { return multiColumnFlowThread()->columnCou
nt(); } |
105 | 105 |
106 bool heightIsAuto() const; | 106 bool heightIsAuto() const; |
107 | 107 |
108 // Find the column that contains the given block offset, and return the tran
slation needed to | 108 // Find the column that contains the given block offset, and return the tran
slation needed to |
109 // get from flow thread coordinates to visual coordinates. | 109 // get from flow thread coordinates to visual coordinates. |
110 LayoutSize flowThreadTranslationAtOffset(LayoutUnit) const; | 110 LayoutSize flowThreadTranslationAtOffset(LayoutUnit) const; |
111 | 111 |
112 LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) con
st; | 112 LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) con
st; |
113 | 113 |
114 void updateMinimumColumnHeight(LayoutUnit offsetInFlowThread, LayoutUnit hei
ght); | |
115 | |
116 // (Re-)calculate the column height if it's auto. This is first and foremost
needed by sets that | 114 // (Re-)calculate the column height if it's auto. This is first and foremost
needed by sets that |
117 // are to balance the column height, but even when it isn't to be balanced,
this is necessary if | 115 // are to balance the column height, but even when it isn't to be balanced,
this is necessary if |
118 // the multicol container's height is constrained. | 116 // the multicol container's height is constrained. |
119 bool recalculateColumnHeight(BalancedColumnHeightCalculation); | 117 bool recalculateColumnHeight(BalancedColumnHeightCalculation); |
120 | 118 |
121 // Reset previously calculated column height. Will mark for layout if needed
. | 119 // Reset previously calculated column height. Will mark for layout if needed
. |
122 void resetColumnHeight(); | 120 void resetColumnHeight(); |
123 | 121 |
124 // Layout of flow thread content that's to be rendered inside this column se
t begins. This | 122 // Layout of flow thread content that's to be rendered inside this column se
t begins. This |
125 // happens at the beginning of flow thread layout, and when advancing from a
previous column set | 123 // happens at the beginning of flow thread layout, and when advancing from a
previous column set |
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171 MultiColumnFragmentainerGroupList m_fragmentainerGroups; | 169 MultiColumnFragmentainerGroupList m_fragmentainerGroups; |
172 LayoutFlowThread* m_flowThread; | 170 LayoutFlowThread* m_flowThread; |
173 }; | 171 }; |
174 | 172 |
175 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutMultiColumnSet, isLayoutMultiColumnSet()); | 173 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutMultiColumnSet, isLayoutMultiColumnSet()); |
176 | 174 |
177 } // namespace blink | 175 } // namespace blink |
178 | 176 |
179 #endif // LayoutMultiColumnSet_h | 177 #endif // LayoutMultiColumnSet_h |
180 | 178 |
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