Source/core/layout/ColumnInfo.h - Issue 1158183006: Remove the old multicol implementation.

Side by Side Diff: Source/core/layout/ColumnInfo.h

Issue 1158183006: Remove the old multicol implementation. (Closed) Base URL: svn://svn.chromium.org/blink/trunk

Patch Set: Created 5 years, 6 months ago

Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.

Jump to:

View unified diff | Download patch | Annotate | Revision Log

OLD	NEW
	(Empty)
1 /*

2 * Copyright (C) 2010, 2011 Apple Inc. All rights reserved.

3 *

4 * Redistribution and use in source and binary forms, with or without

5 * modification, are permitted provided that the following conditions

6 * are met:

7 * 1. Redistributions of source code must retain the above copyright

8 * notice, this list of conditions and the following disclaimer.

9 * 2. Redistributions in binary form must reproduce the above copyright

10 * notice, this list of conditions and the following disclaimer in the

11 * documentation and/or other materials provided with the distribution.

12 *

13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR

17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

24 */

25

26 #ifndef ColumnInfo_h

27 #define ColumnInfo_h

28

29 #include "platform/LayoutUnit.h"

30 #include "wtf/FastAllocBase.h"

31 #include "wtf/Noncopyable.h"

32 #include <algorithm>

33

34 namespace blink {

35

36 class ColumnInfo {

37 WTF_MAKE_NONCOPYABLE(ColumnInfo); WTF_MAKE_FAST_ALLOCATED(ColumnInfo);

38 public:

39 ColumnInfo()

40 : m_desiredColumnWidth(0)

41 , m_desiredColumnCount(1)

42 , m_progressionAxis(InlineAxis)

43 , m_columnCount(1)

44 , m_columnHeight(0)

45 , m_minimumColumnHeight(0)

46 , m_forcedBreaks(0)

47 , m_maximumDistanceBetweenForcedBreaks(0)

48 , m_forcedBreakOffset(0)

49 {

50 }

51

52 LayoutUnit desiredColumnWidth() const { return m_desiredColumnWidth; }

53 void setDesiredColumnWidth(LayoutUnit width) { m_desiredColumnWidth = width; }

54

55 unsigned desiredColumnCount() const { return m_desiredColumnCount; }

56 void setDesiredColumnCount(unsigned count) { m_desiredColumnCount = count; }

57

58 enum Axis { InlineAxis, BlockAxis };

59

60 Axis progressionAxis() const { return m_progressionAxis; }

61 void setProgressionAxis(Axis progressionAxis) { m_progressionAxis = progress ionAxis; }

62

63 unsigned columnCount() const { return m_columnCount; }

64 LayoutUnit columnHeight() const { return m_columnHeight; }

65

66 // Set our count and height. This is enough info for a LayoutBlock to compu te page rects

67 // dynamically.

68 void setColumnCountAndHeight(int count, LayoutUnit height)

69 {

70 m_columnCount = count;

71 m_columnHeight = height;

72 }

73 void setColumnHeight(LayoutUnit height) { m_columnHeight = height; }

74

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

76 LayoutUnit minimumColumnHeight() const { return m_minimumColumnHeight; }

77

78 int forcedBreaks() const { return m_forcedBreaks; }

79 LayoutUnit forcedBreakOffset() const { return m_forcedBreakOffset; }

80 LayoutUnit maximumDistanceBetweenForcedBreaks() const { return m_maximumDist anceBetweenForcedBreaks; }

81 void clearForcedBreaks()

82 {

83 m_forcedBreaks = 0;

84 m_maximumDistanceBetweenForcedBreaks = 0;

85 m_forcedBreakOffset = 0;

86 }

87 void addForcedBreak(LayoutUnit offsetFromFirstPage)

88 {

89 ASSERT(!m_columnHeight);

90 LayoutUnit distanceFromLastBreak = offsetFromFirstPage - m_forcedBreakOf fset;

91 if (!distanceFromLastBreak)

92 return;

93 m_forcedBreaks++;

94 m_maximumDistanceBetweenForcedBreaks = std::max(m_maximumDistanceBetween ForcedBreaks, distanceFromLastBreak);

95 m_forcedBreakOffset = offsetFromFirstPage;

96 }

97

98 private:

99 LayoutUnit m_desiredColumnWidth;

100 unsigned m_desiredColumnCount;

101 Axis m_progressionAxis;

102

103 unsigned m_columnCount;

104 LayoutUnit m_columnHeight;

105 LayoutUnit m_minimumColumnHeight;

106 int m_forcedBreaks; // FIXME: We will ultimately need to cache more informat ion to balance around forced breaks properly.

107 LayoutUnit m_maximumDistanceBetweenForcedBreaks;

108 LayoutUnit m_forcedBreakOffset;

109 };

110

111 }

112

113 #endif

OLD	NEW

« no previous file with comments | « no previous file | Source/core/layout/LayoutBlock.h » ('j') | Source/core/paint/BoxPainter.cpp » ('J')