Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 204 insertions, 0 deletions

diff --git a/Source/WebCore/rendering/RenderTableSection.h b/Source/WebCore/rendering/RenderTableSection.h
new file mode 100644
index 000000000..86f343437
--- /dev/null
+++ b/Source/WebCore/rendering/RenderTableSection.h
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 1997 Martin Jones (mjones@kde.org)
+ *           (C) 1997 Torben Weis (weis@kde.org)
+ *           (C) 1998 Waldo Bastian (bastian@kde.org)
+ *           (C) 1999 Lars Knoll (knoll@kde.org)
+ *           (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef RenderTableSection_h
+#define RenderTableSection_h
+
+#include "RenderTable.h"
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class RenderTableCell;
+class RenderTableRow;
+
+class RenderTableSection : public RenderBox {
+public:
+    RenderTableSection(Node*);
+    virtual ~RenderTableSection();
+
+    const RenderObjectChildList* children() const { return &m_children; }
+    RenderObjectChildList* children() { return &m_children; }
+
+    virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
+
+    virtual LayoutUnit firstLineBoxBaseline() const;
+
+    void addCell(RenderTableCell*, RenderTableRow* row);
+
+    void setCellLogicalWidths();
+    LayoutUnit calcRowLogicalHeight();
+    LayoutUnit layoutRows(LayoutUnit logicalHeight);
+
+    RenderTable* table() const { return toRenderTable(parent()); }
+
+    struct CellStruct {
+        Vector<RenderTableCell*, 1> cells; 
+        bool inColSpan; // true for columns after the first in a colspan
+
+        CellStruct()
+            : inColSpan(false)
+        {
+        }
+
+        RenderTableCell* primaryCell()
+        {
+            return hasCells() ? cells[cells.size() - 1] : 0;
+        }
+
+        const RenderTableCell* primaryCell() const
+        {
+            return hasCells() ? cells[cells.size() - 1] : 0;
+        }
+
+        bool hasCells() const { return cells.size() > 0; }
+    };
+
+    typedef Vector<CellStruct> Row;
+
+    struct RowStruct {
+        RowStruct()
+            : rowRenderer(0)
+            , baseline(0)
+        {
+        }
+
+        Row row;
+        RenderTableRow* rowRenderer;
+        LayoutUnit baseline;
+        Length logicalHeight;
+    };
+
+    CellStruct& cellAt(unsigned row,  unsigned col) { return m_grid[row].row[col]; }
+    const CellStruct& cellAt(unsigned row, unsigned col) const { return m_grid[row].row[col]; }
+    RenderTableCell* primaryCellAt(unsigned row, unsigned col)
+    {
+        CellStruct& c = m_grid[row].row[col];
+        return c.primaryCell();
+    }
+
+    void appendColumn(unsigned pos);
+    void splitColumn(unsigned pos, unsigned first);
+
+    LayoutUnit calcOuterBorderBefore() const;
+    LayoutUnit calcOuterBorderAfter() const;
+    LayoutUnit calcOuterBorderStart() const;
+    LayoutUnit calcOuterBorderEnd() const;
+    void recalcOuterBorder();
+
+    LayoutUnit outerBorderBefore() const { return m_outerBorderBefore; }
+    LayoutUnit outerBorderAfter() const { return m_outerBorderAfter; }
+    LayoutUnit outerBorderStart() const { return m_outerBorderStart; }
+    LayoutUnit outerBorderEnd() const { return m_outerBorderEnd; }
+
+    unsigned numRows() const { return m_grid.size(); }
+    unsigned numColumns() const;
+    void recalcCells();
+    void recalcCellsIfNeeded()
+    {
+        if (m_needsCellRecalc)
+            recalcCells();
+    }
+
+    bool needsCellRecalc() const { return m_needsCellRecalc; }
+    void setNeedsCellRecalc();
+
+    LayoutUnit getBaseline(unsigned row) { return m_grid[row].baseline; }
+
+    void rowLogicalHeightChanged(unsigned rowIndex);
+
+    unsigned rowIndexForRenderer(const RenderTableRow*) const;
+
+protected:
+    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
+
+private:
+    virtual RenderObjectChildList* virtualChildren() { return children(); }
+    virtual const RenderObjectChildList* virtualChildren() const { return children(); }
+
+    virtual const char* renderName() const { return isAnonymous() ? "RenderTableSection (anonymous)" : "RenderTableSection"; }
+
+    virtual bool isTableSection() const { return true; }
+
+    virtual void willBeDestroyed();
+
+    virtual void layout();
+
+    virtual void removeChild(RenderObject* oldChild);
+
+    virtual void paint(PaintInfo&, const LayoutPoint&);
+    virtual void paintCell(RenderTableCell*, PaintInfo&, const LayoutPoint&);
+    virtual void paintObject(PaintInfo&, const LayoutPoint&);
+
+    virtual void imageChanged(WrappedImagePtr, const IntRect* = 0);
+
+    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestAction);
+
+    void ensureRows(unsigned);
+
+    bool hasOverflowingCell() const { return m_overflowingCells.size() || m_forceSlowPaintPathWithOverflowingCell; }
+
+    RenderObjectChildList m_children;
+
+    Vector<RowStruct> m_grid;
+    Vector<LayoutUnit> m_rowPos;
+
+    // the current insertion position
+    unsigned m_cCol;
+    unsigned m_cRow;
+
+    LayoutUnit m_outerBorderStart;
+    LayoutUnit m_outerBorderEnd;
+    LayoutUnit m_outerBorderBefore;
+    LayoutUnit m_outerBorderAfter;
+
+    bool m_needsCellRecalc;
+
+    // This HashSet holds the overflowing cells for faster painting.
+    // If we have more than gMaxAllowedOverflowingCellRatio * total cells, it will be empty
+    // and m_forceSlowPaintPathWithOverflowingCell will be set to save memory.
+    HashSet<RenderTableCell*> m_overflowingCells;
+    bool m_forceSlowPaintPathWithOverflowingCell;
+
+    bool m_hasMultipleCellLevels;
+};
+
+inline RenderTableSection* toRenderTableSection(RenderObject* object)
+{
+    ASSERT(!object || object->isTableSection());
+    return static_cast<RenderTableSection*>(object);
+}
+
+inline const RenderTableSection* toRenderTableSection(const RenderObject* object)
+{
+    ASSERT(!object || object->isTableSection());
+    return static_cast<const RenderTableSection*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderTableSection(const RenderTableSection*);
+
+} // namespace WebCore
+
+#endif // RenderTableSection_h