auto import from //depot/cupcake/@135843

1 files changed, 171 insertions, 0 deletions

diff --git a/WebCore/rendering/InlineFlowBox.h b/WebCore/rendering/InlineFlowBox.h
new file mode 100644
index 0000000..9589603
--- /dev/null
+++ b/WebCore/rendering/InlineFlowBox.h
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007 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 InlineFlowBox_h
+#define InlineFlowBox_h
+
+#include "InlineRunBox.h"
+
+namespace WebCore {
+
+class HitTestResult;
+
+struct HitTestRequest;
+
+class InlineFlowBox : public InlineRunBox {
+public:
+    InlineFlowBox(RenderObject* obj)
+        : InlineRunBox(obj)
+        , m_firstChild(0)
+        , m_lastChild(0)
+        , m_maxHorizontalVisualOverflow(0)
+#ifndef NDEBUG
+        , m_hasBadChildList(false)
+#endif
+    {
+        // Internet Explorer and Firefox always create a marker for list items, even when the list-style-type is none.  We do not make a marker
+        // in the list-style-type: none case, since it is wasteful to do so.  However, in order to match other browsers we have to pretend like
+        // an invisible marker exists.  The side effect of having an invisible marker is that the quirks mode behavior of shrinking lines with no
+        // text children must not apply.  This change also means that gaps will exist between image bullet list items.  Even when the list bullet
+        // is an image, the line is still considered to be immune from the quirk.
+        m_hasTextChildren = obj->style()->display() == LIST_ITEM;
+    }
+
+#ifndef NDEBUG
+    virtual ~InlineFlowBox();
+#endif
+
+    RenderFlow* flowObject();
+
+    virtual bool isInlineFlowBox() { return true; }
+
+    InlineFlowBox* prevFlowBox() const { return static_cast<InlineFlowBox*>(m_prevLine); }
+    InlineFlowBox* nextFlowBox() const { return static_cast<InlineFlowBox*>(m_nextLine); }
+
+    InlineBox* firstChild() { checkConsistency(); return m_firstChild; }
+    InlineBox* lastChild() { checkConsistency(); return m_lastChild; }
+
+    virtual InlineBox* firstLeafChild();
+    virtual InlineBox* lastLeafChild();
+    InlineBox* firstLeafChildAfterBox(InlineBox* start = 0);
+    InlineBox* lastLeafChildBeforeBox(InlineBox* start = 0);
+
+    virtual void setConstructed()
+    {
+        InlineBox::setConstructed();
+        if (firstChild())
+            firstChild()->setConstructed();
+    }
+
+    void addToLine(InlineBox* child);
+    virtual void deleteLine(RenderArena*);
+    virtual void extractLine();
+    virtual void attachLine();
+    virtual void adjustPosition(int dx, int dy);
+
+    virtual void clearTruncation();
+
+    virtual void paintBoxDecorations(RenderObject::PaintInfo&, int tx, int ty);
+    virtual void paintMask(RenderObject::PaintInfo&, int tx, int ty);
+    void paintFillLayers(const RenderObject::PaintInfo&, const Color&, const FillLayer*,
+                         int my, int mh, int tx, int ty, int w, int h, CompositeOperator = CompositeSourceOver);
+    void paintFillLayer(const RenderObject::PaintInfo&, const Color&, const FillLayer*,
+                         int my, int mh, int tx, int ty, int w, int h, CompositeOperator = CompositeSourceOver);
+    void paintBoxShadow(GraphicsContext*, RenderStyle*, int tx, int ty, int w, int h);
+    virtual void paintTextDecorations(RenderObject::PaintInfo&, int tx, int ty, bool paintedChildren = false);
+    virtual void paint(RenderObject::PaintInfo&, int tx, int ty);
+    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty);
+
+    int marginBorderPaddingLeft();
+    int marginBorderPaddingRight();
+    int marginLeft();
+    int marginRight();
+    int borderLeft() { if (includeLeftEdge()) return object()->borderLeft(); return 0; }
+    int borderRight() { if (includeRightEdge()) return object()->borderRight(); return 0; }
+    int paddingLeft() { if (includeLeftEdge()) return object()->paddingLeft(); return 0; }
+    int paddingRight() { if (includeRightEdge()) return object()->paddingRight(); return 0; }
+
+    bool includeLeftEdge() { return m_includeLeftEdge; }
+    bool includeRightEdge() { return m_includeRightEdge; }
+    void setEdges(bool includeLeft, bool includeRight)
+    {
+        m_includeLeftEdge = includeLeft;
+        m_includeRightEdge = includeRight;
+    }
+
+    // Helper functions used during line construction and placement.
+    void determineSpacingForFlowBoxes(bool lastLine, RenderObject* endObject);
+    int getFlowSpacingWidth();
+    bool onEndChain(RenderObject* endObject);
+    virtual int placeBoxesHorizontally(int x, int& leftPosition, int& rightPosition, bool& needsWordSpacing);
+    virtual void verticallyAlignBoxes(int& heightOfBlock);
+    void computeLogicalBoxHeights(int& maxPositionTop, int& maxPositionBottom,
+                                  int& maxAscent, int& maxDescent, bool strictMode);
+    void adjustMaxAscentAndDescent(int& maxAscent, int& maxDescent,
+                                   int maxPositionTop, int maxPositionBottom);
+    void placeBoxesVertically(int y, int maxHeight, int maxAscent, bool strictMode,
+                              int& topPosition, int& bottomPosition, int& selectionTop, int& selectionBottom);
+    void shrinkBoxesWithNoTextChildren(int topPosition, int bottomPosition);
+    
+    virtual void setVerticalOverflowPositions(int top, int bottom) { }
+    virtual void setVerticalSelectionPositions(int top, int bottom) { }
+    int maxHorizontalVisualOverflow() const { return m_maxHorizontalVisualOverflow; }
+
+    void removeChild(InlineBox* child);
+
+    virtual RenderObject::SelectionState selectionState();
+
+    virtual bool canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth);
+    virtual int placeEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth, bool&);
+
+    void checkConsistency() const;
+    void setHasBadChildList();
+
+private:
+    InlineBox* m_firstChild;
+    InlineBox* m_lastChild;
+    int m_maxHorizontalVisualOverflow;
+
+#ifndef NDEBUG
+    bool m_hasBadChildList;
+#endif
+};
+
+#ifdef NDEBUG
+inline void InlineFlowBox::checkConsistency() const
+{
+}
+#endif
+
+inline void InlineFlowBox::setHasBadChildList()
+{
+#ifndef NDEBUG
+    m_hasBadChildList = true;
+#endif
+}
+
+} // namespace WebCore
+
+#ifndef NDEBUG
+// Outside the WebCore namespace for ease of invocation from gdb.
+void showTree(const WebCore::InlineBox*);
+#endif
+
+#endif // InlineFlowBox_h