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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 #include "config.h" | 5 #include "config.h" |
6 | 6 |
7 #include "core/layout/MultiColumnFragmentainerGroup.h" | 7 #include "core/layout/MultiColumnFragmentainerGroup.h" |
8 | 8 |
9 #include "core/layout/ColumnBalancer.h" | 9 #include "core/layout/ColumnBalancer.h" |
10 #include "core/layout/LayoutMultiColumnSet.h" | 10 #include "core/layout/LayoutMultiColumnSet.h" |
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47 return isLastGroup() && m_columnSet.heightIsAuto(); | 47 return isLastGroup() && m_columnSet.heightIsAuto(); |
48 } | 48 } |
49 | 49 |
50 void MultiColumnFragmentainerGroup::resetColumnHeight() | 50 void MultiColumnFragmentainerGroup::resetColumnHeight() |
51 { | 51 { |
52 // Nuke previously stored minimum column height. Contents may have changed f
or all we know. | 52 // Nuke previously stored minimum column height. Contents may have changed f
or all we know. |
53 m_minimumColumnHeight = 0; | 53 m_minimumColumnHeight = 0; |
54 | 54 |
55 m_maxColumnHeight = calculateMaxColumnHeight(); | 55 m_maxColumnHeight = calculateMaxColumnHeight(); |
56 | 56 |
57 LayoutUnit oldColumnHeight = m_columnHeight; | |
58 | |
59 LayoutMultiColumnFlowThread* flowThread = m_columnSet.multiColumnFlowThread(
); | 57 LayoutMultiColumnFlowThread* flowThread = m_columnSet.multiColumnFlowThread(
); |
60 LayoutMultiColumnFlowThread* enclosingFlowThread = flowThread->enclosingFlow
Thread(); | 58 LayoutMultiColumnFlowThread* enclosingFlowThread = flowThread->enclosingFlow
Thread(); |
61 if (enclosingFlowThread && enclosingFlowThread->isPageLogicalHeightKnown())
{ | 59 if (enclosingFlowThread && enclosingFlowThread->isPageLogicalHeightKnown())
{ |
62 // TODO(mstensho): Do this better. If height is auto here, we shouldn't
set a | 60 // TODO(mstensho): Do this better. If height is auto here, we shouldn't
set a |
63 // height, or forced breaks and pagination struts might mess up column b
alancing. | 61 // height, or forced breaks and pagination struts might mess up column b
alancing. |
64 LayoutUnit columnHeight = heightIsAuto() ? m_maxColumnHeight : heightAdj
ustedForRowOffset(flowThread->columnHeightAvailable()); | 62 LayoutUnit columnHeight = heightIsAuto() ? m_maxColumnHeight : heightAdj
ustedForRowOffset(flowThread->columnHeightAvailable()); |
65 setAndConstrainColumnHeight(columnHeight); | 63 setAndConstrainColumnHeight(columnHeight); |
66 } else if (heightIsAuto()) { | 64 } else if (heightIsAuto()) { |
67 m_columnHeight = LayoutUnit(); | 65 m_columnHeight = LayoutUnit(); |
68 } else { | 66 } else { |
69 setAndConstrainColumnHeight(heightAdjustedForRowOffset(flowThread->colum
nHeightAvailable())); | 67 setAndConstrainColumnHeight(heightAdjustedForRowOffset(flowThread->colum
nHeightAvailable())); |
70 } | 68 } |
71 | |
72 if (m_columnHeight != oldColumnHeight) | |
73 m_columnSet.setChildNeedsLayout(MarkOnlyThis); | |
74 } | 69 } |
75 | 70 |
76 bool MultiColumnFragmentainerGroup::recalculateColumnHeight(BalancedColumnHeight
Calculation calculationMode) | 71 bool MultiColumnFragmentainerGroup::recalculateColumnHeight(BalancedColumnHeight
Calculation calculationMode) |
77 { | 72 { |
78 LayoutUnit oldColumnHeight = m_columnHeight; | 73 LayoutUnit oldColumnHeight = m_columnHeight; |
79 | 74 |
80 m_maxColumnHeight = calculateMaxColumnHeight(); | 75 m_maxColumnHeight = calculateMaxColumnHeight(); |
81 | 76 |
82 if (heightIsAuto()) { | 77 if (heightIsAuto()) { |
83 LayoutUnit newColumnHeight = calculateColumnHeight(calculationMode); | 78 LayoutUnit newColumnHeight = calculateColumnHeight(calculationMode); |
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561 append(MultiColumnFragmentainerGroup(m_columnSet)); | 556 append(MultiColumnFragmentainerGroup(m_columnSet)); |
562 return last(); | 557 return last(); |
563 } | 558 } |
564 | 559 |
565 void MultiColumnFragmentainerGroupList::deleteExtraGroups() | 560 void MultiColumnFragmentainerGroupList::deleteExtraGroups() |
566 { | 561 { |
567 shrink(1); | 562 shrink(1); |
568 } | 563 } |
569 | 564 |
570 } // namespace blink | 565 } // namespace blink |
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