Source/core/layout/MultiColumnFragmentainerGroup.h - Issue 1265933002: Make LayoutFlowThread::fragmentsBoundingBox() faster.

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Issue 1265933002: Make LayoutFlowThread::fragmentsBoundingBox() faster. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Code review. Created 5 years, 4 months ago

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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	9

10 namespace blink {	10 namespace blink {

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54 void addContentRun(LayoutUnit endOffsetInFlowThread);	54 void addContentRun(LayoutUnit endOffsetInFlowThread);

55 void updateMinimumColumnHeight(LayoutUnit height) { m_minimumColumnHeight = std::max(height, m_minimumColumnHeight); }	55 void updateMinimumColumnHeight(LayoutUnit height) { m_minimumColumnHeight = std::max(height, m_minimumColumnHeight); }

56 void recordSpaceShortage(LayoutUnit);	56 void recordSpaceShortage(LayoutUnit);

57 bool recalculateColumnHeight(BalancedColumnHeightCalculation calculationMode );	57 bool recalculateColumnHeight(BalancedColumnHeightCalculation calculationMode );

58	58

59 void expandToEncompassFlowThreadOverflow();	59 void expandToEncompassFlowThreadOverflow();

60	60

61 LayoutSize flowThreadTranslationAtOffset(LayoutUnit offsetInFlowThread) cons t;	61 LayoutSize flowThreadTranslationAtOffset(LayoutUnit offsetInFlowThread) cons t;

62 LayoutUnit columnLogicalTopForOffset(LayoutUnit offsetInFlowThread) const;	62 LayoutUnit columnLogicalTopForOffset(LayoutUnit offsetInFlowThread) const;

63 LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) con st;	63 LayoutPoint visualPointToFlowThreadPoint(const LayoutPoint& visualPoint) con st;

	64 LayoutRect fragmentsBoundingBox(const LayoutRect& boundingBoxInFlowThread) c onst;

	65

64 void collectLayerFragments(DeprecatedPaintLayerFragments&, const LayoutRect& layerBoundingBox, const LayoutRect& dirtyRect) const;	66 void collectLayerFragments(DeprecatedPaintLayerFragments&, const LayoutRect& layerBoundingBox, const LayoutRect& dirtyRect) const;

65 LayoutRect calculateOverflow() const;	67 LayoutRect calculateOverflow() const;

66	68

67 // The "CSS actual" value of column-count. This includes overflowing columns , if any.	69 // The "CSS actual" value of column-count. This includes overflowing columns , if any.

68 unsigned actualColumnCount() const;	70 unsigned actualColumnCount() const;

69	71

70 private:	72 private:

71 LayoutUnit heightAdjustedForRowOffset(LayoutUnit height) const;	73 LayoutUnit heightAdjustedForRowOffset(LayoutUnit height) const;

72 LayoutUnit calculateMaxColumnHeight() const;	74 LayoutUnit calculateMaxColumnHeight() const;

73 void setAndConstrainColumnHeight(LayoutUnit);	75 void setAndConstrainColumnHeight(LayoutUnit);

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180	182

181 private:	183 private:

182 LayoutMultiColumnSet& m_columnSet;	184 LayoutMultiColumnSet& m_columnSet;

183	185

184 Vector<MultiColumnFragmentainerGroup, 1> m_groups;	186 Vector<MultiColumnFragmentainerGroup, 1> m_groups;

185 };	187 };

186	188

187 } // namespace blink	189 } // namespace blink

188	190

189 #endif // MultiColumnFragmentainerGroup_h	191 #endif // MultiColumnFragmentainerGroup_h

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