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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MultiColumnFragmentainerGroup_h | 5 #ifndef MultiColumnFragmentainerGroup_h |
6 #define MultiColumnFragmentainerGroup_h | 6 #define MultiColumnFragmentainerGroup_h |
7 | 7 |
8 #include "core/layout/LayoutMultiColumnFlowThread.h" | 8 #include "core/layout/LayoutMultiColumnFlowThread.h" |
9 #include "wtf/Allocator.h" | 9 #include "wtf/Allocator.h" |
10 | 10 |
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60 LayoutUnit logicalHeightInFlowThread() const { return m_logicalBottomInFlowT
hread - m_logicalTopInFlowThread; } | 60 LayoutUnit logicalHeightInFlowThread() const { return m_logicalBottomInFlowT
hread - m_logicalTopInFlowThread; } |
61 | 61 |
62 void resetColumnHeight(); | 62 void resetColumnHeight(); |
63 bool recalculateColumnHeight(LayoutMultiColumnSet&); | 63 bool recalculateColumnHeight(LayoutMultiColumnSet&); |
64 | 64 |
65 LayoutSize flowThreadTranslationAtOffset(LayoutUnit, LayoutBox::PageBoundary
Rule, CoordinateSpaceConversion) const; | 65 LayoutSize flowThreadTranslationAtOffset(LayoutUnit, LayoutBox::PageBoundary
Rule, CoordinateSpaceConversion) const; |
66 LayoutUnit columnLogicalTopForOffset(LayoutUnit offsetInFlowThread) const; | 66 LayoutUnit columnLogicalTopForOffset(LayoutUnit offsetInFlowThread) const; |
67 LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) con
st; | 67 LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) con
st; |
68 LayoutRect fragmentsBoundingBox(const LayoutRect& boundingBoxInFlowThread) c
onst; | 68 LayoutRect fragmentsBoundingBox(const LayoutRect& boundingBoxInFlowThread) c
onst; |
69 | 69 |
| 70 LayoutRect flowThreadPortionRectAt(unsigned columnIndex) const; |
70 LayoutRect flowThreadPortionOverflowRectAt(unsigned columnIndex) const; | 71 LayoutRect flowThreadPortionOverflowRectAt(unsigned columnIndex) const; |
71 | 72 |
72 // Get the first and the last column intersecting the specified block range. | 73 // Get the first and the last column intersecting the specified block range. |
73 // Note that |logicalBottomInFlowThread| is an exclusive endpoint. | 74 // Note that |logicalBottomInFlowThread| is an exclusive endpoint. |
74 void columnIntervalForBlockRangeInFlowThread(LayoutUnit logicalTopInFlowThre
ad, LayoutUnit logicalBottomInFlowThread, unsigned& firstColumn, unsigned& lastC
olumn) const; | 75 void columnIntervalForBlockRangeInFlowThread(LayoutUnit logicalTopInFlowThre
ad, LayoutUnit logicalBottomInFlowThread, unsigned& firstColumn, unsigned& lastC
olumn) const; |
75 | 76 |
76 // Get the first and the last column intersecting the specified visual recta
ngle. | 77 // Get the first and the last column intersecting the specified visual recta
ngle. |
77 void columnIntervalForVisualRect(const LayoutRect&, unsigned& firstColumn, u
nsigned& lastColumn) const; | 78 void columnIntervalForVisualRect(const LayoutRect&, unsigned& firstColumn, u
nsigned& lastColumn) const; |
78 | 79 |
79 LayoutRect calculateOverflow() const; | 80 LayoutRect calculateOverflow() const; |
80 | 81 |
81 unsigned columnIndexAtOffset(LayoutUnit offsetInFlowThread, LayoutBox::PageB
oundaryRule) const; | 82 unsigned columnIndexAtOffset(LayoutUnit offsetInFlowThread, LayoutBox::PageB
oundaryRule) const; |
82 | 83 |
83 // The "CSS actual" value of column-count. This includes overflowing columns
, if any. | 84 // The "CSS actual" value of column-count. This includes overflowing columns
, if any. |
84 // Returns 1 or greater, never 0. | 85 // Returns 1 or greater, never 0. |
85 unsigned actualColumnCount() const; | 86 unsigned actualColumnCount() const; |
86 | 87 |
87 private: | 88 private: |
88 LayoutUnit heightAdjustedForRowOffset(LayoutUnit height) const; | 89 LayoutUnit heightAdjustedForRowOffset(LayoutUnit height) const; |
89 LayoutUnit calculateMaxColumnHeight() const; | 90 LayoutUnit calculateMaxColumnHeight() const; |
90 void setAndConstrainColumnHeight(LayoutUnit); | 91 void setAndConstrainColumnHeight(LayoutUnit); |
91 | 92 |
92 LayoutUnit rebalanceColumnHeightIfNeeded() const; | 93 LayoutUnit rebalanceColumnHeightIfNeeded() const; |
93 | 94 |
94 LayoutRect columnRectAt(unsigned columnIndex) const; | 95 LayoutRect columnRectAt(unsigned columnIndex) const; |
95 LayoutUnit logicalTopInFlowThreadAt(unsigned columnIndex) const { return m_l
ogicalTopInFlowThread + columnIndex * m_columnHeight; } | 96 LayoutUnit logicalTopInFlowThreadAt(unsigned columnIndex) const { return m_l
ogicalTopInFlowThread + columnIndex * m_columnHeight; } |
96 LayoutRect flowThreadPortionRectAt(unsigned columnIndex) const; | |
97 | 97 |
98 // Return the column that the specified visual point belongs to. Only the co
ordinate on the | 98 // Return the column that the specified visual point belongs to. Only the co
ordinate on the |
99 // column progression axis is relevant. Every point belongs to a column, eve
n if said point is | 99 // column progression axis is relevant. Every point belongs to a column, eve
n if said point is |
100 // not inside any of the columns. | 100 // not inside any of the columns. |
101 unsigned columnIndexAtVisualPoint(const LayoutPoint& visualPoint) const; | 101 unsigned columnIndexAtVisualPoint(const LayoutPoint& visualPoint) const; |
102 | 102 |
103 const LayoutMultiColumnSet& m_columnSet; | 103 const LayoutMultiColumnSet& m_columnSet; |
104 | 104 |
105 LayoutUnit m_logicalTop; | 105 LayoutUnit m_logicalTop; |
106 LayoutUnit m_logicalTopInFlowThread; | 106 LayoutUnit m_logicalTopInFlowThread; |
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148 | 148 |
149 private: | 149 private: |
150 LayoutMultiColumnSet& m_columnSet; | 150 LayoutMultiColumnSet& m_columnSet; |
151 | 151 |
152 Vector<MultiColumnFragmentainerGroup, 1> m_groups; | 152 Vector<MultiColumnFragmentainerGroup, 1> m_groups; |
153 }; | 153 }; |
154 | 154 |
155 } // namespace blink | 155 } // namespace blink |
156 | 156 |
157 #endif // MultiColumnFragmentainerGroup_h | 157 #endif // MultiColumnFragmentainerGroup_h |
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