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29 #include "LayoutTypes.h"
30 #include <wtf/Vector.h>
35 WTF_MAKE_NONCOPYABLE(ColumnInfo); WTF_MAKE_FAST_ALLOCATED;
38 : m_desiredColumnWidth(0)
39 , m_desiredColumnCount(1)
42 , m_minimumColumnHeight(0)
44 , m_maximumDistanceBetweenForcedBreaks(0)
45 , m_forcedBreakOffset(0)
48 LayoutUnit desiredColumnWidth() const { return m_desiredColumnWidth; }
49 void setDesiredColumnWidth(LayoutUnit width) { m_desiredColumnWidth = width; }
51 unsigned desiredColumnCount() const { return m_desiredColumnCount; }
52 void setDesiredColumnCount(unsigned count) { m_desiredColumnCount = count; }
54 unsigned columnCount() const { return m_columnCount; }
55 LayoutUnit columnHeight() const { return m_columnHeight; }
57 // Set our count and height. This is enough info for a RenderBlock to compute page rects
59 void setColumnCountAndHeight(int count, LayoutUnit height)
61 m_columnCount = count;
62 m_columnHeight = height;
64 void setColumnHeight(LayoutUnit height) { m_columnHeight = height; }
66 void updateMinimumColumnHeight(LayoutUnit height) { m_minimumColumnHeight = std::max(height, m_minimumColumnHeight); }
67 LayoutUnit minimumColumnHeight() const { return m_minimumColumnHeight; }
69 int forcedBreaks() const { return m_forcedBreaks; }
70 int forcedBreakOffset() const { return m_forcedBreakOffset; }
71 int maximumDistanceBetweenForcedBreaks() const { return m_maximumDistanceBetweenForcedBreaks; }
72 void clearForcedBreaks()
75 m_maximumDistanceBetweenForcedBreaks = 0;
76 m_forcedBreakOffset = 0;
78 void addForcedBreak(int offsetFromFirstPage)
80 ASSERT(!m_columnHeight);
81 int distanceFromLastBreak = offsetFromFirstPage - m_forcedBreakOffset;
82 if (!distanceFromLastBreak)
85 m_maximumDistanceBetweenForcedBreaks = std::max(m_maximumDistanceBetweenForcedBreaks, distanceFromLastBreak);
86 m_forcedBreakOffset = offsetFromFirstPage;
90 LayoutUnit m_desiredColumnWidth;
91 unsigned m_desiredColumnCount;
93 unsigned m_columnCount;
94 LayoutUnit m_columnHeight;
95 LayoutUnit m_minimumColumnHeight;
96 int m_forcedBreaks; // FIXME: We will ultimately need to cache more information to balance around forced breaks properly.
97 int m_maximumDistanceBetweenForcedBreaks;
98 int m_forcedBreakOffset;