--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/rendering/RootInlineBox.h Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,192 @@
+/*
+ * This file is part of the line box implementation for KDE.
+ *
+ * Copyright (C) 2003, 2006 Apple Computer, Inc.
+ *
+ * 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 RootInlineBox_h
+#define RootInlineBox_h
+
+#include "BidiContext.h"
+#include "InlineFlowBox.h"
+
+namespace WebCore {
+
+#if PLATFORM(SYMBIAN)
+struct BidiStatus;
+#else
+class BidiStatus;
+#endif
+class EllipsisBox;
+class HitTestResult;
+struct GapRects;
+
+class RootInlineBox : public InlineFlowBox {
+public:
+ RootInlineBox(RenderObject* obj)
+ : InlineFlowBox(obj)
+ , m_overflow(0)
+ , m_lineBreakObj(0)
+ , m_lineBreakPos(0)
+ {
+ }
+
+ virtual bool isRootInlineBox() { return true; }
+
+ virtual void destroy(RenderArena*);
+ void detachEllipsisBox(RenderArena*);
+
+ RootInlineBox* nextRootBox() { return static_cast<RootInlineBox*>(m_nextLine); }
+ RootInlineBox* prevRootBox() { return static_cast<RootInlineBox*>(m_prevLine); }
+
+ virtual void adjustPosition(int dx, int dy);
+
+ virtual int topOverflow() { return m_overflow ? m_overflow->m_topOverflow : m_y; }
+ virtual int bottomOverflow() { return m_overflow ? m_overflow->m_bottomOverflow : m_y + m_height; }
+ virtual int leftOverflow() { return m_overflow ? m_overflow->m_leftOverflow : m_x; }
+ virtual int rightOverflow() { return m_overflow ? m_overflow->m_rightOverflow : m_x + m_width; }
+
+ virtual void setVerticalOverflowPositions(int top, int bottom);
+ void setHorizontalOverflowPositions(int left, int right);
+
+ virtual void setVerticalSelectionPositions(int top, int bottom);
+
+ RenderObject* lineBreakObj() const { return m_lineBreakObj; }
+ BidiStatus lineBreakBidiStatus() const;
+ void setLineBreakInfo(RenderObject*, unsigned breakPos, const BidiStatus&);
+
+ unsigned lineBreakPos() const { return m_lineBreakPos; }
+ void setLineBreakPos(unsigned p) { m_lineBreakPos = p; }
+
+ int blockHeight() const { return m_blockHeight; }
+ void setBlockHeight(int h) { m_blockHeight = h; }
+
+ bool endsWithBreak() const { return m_endsWithBreak; }
+ void setEndsWithBreak(bool b) { m_endsWithBreak = b; }
+
+ void childRemoved(InlineBox* box);
+
+ bool canAccommodateEllipsis(bool ltr, int blockEdge, int lineBoxEdge, int ellipsisWidth);
+ void placeEllipsis(const AtomicString& ellipsisStr, bool ltr, int blockEdge, int ellipsisWidth, InlineBox* markupBox = 0);
+ virtual int placeEllipsisBox(bool ltr, int blockEdge, int ellipsisWidth, bool& foundBox);
+
+ EllipsisBox* ellipsisBox() const;
+
+ void paintEllipsisBox(RenderObject::PaintInfo&, int tx, int ty) const;
+ bool hitTestEllipsisBox(HitTestResult&, int x, int y, int tx, int ty, HitTestAction, bool);
+
+ virtual void clearTruncation();
+
+#if PLATFORM(MAC)
+ void addHighlightOverflow();
+ void paintCustomHighlight(RenderObject::PaintInfo&, int tx, int ty, const AtomicString& highlightType);
+#endif
+
+ virtual void paint(RenderObject::PaintInfo&, int tx, int ty);
+ virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int, int, int, int);
+
+ bool hasSelectedChildren() const { return m_hasSelectedChildren; }
+ void setHasSelectedChildren(bool);
+
+ virtual RenderObject::SelectionState selectionState();
+ InlineBox* firstSelectedBox();
+ InlineBox* lastSelectedBox();
+
+ GapRects fillLineSelectionGap(int selTop, int selHeight, RenderBlock* rootBlock, int blockX, int blockY,
+ int tx, int ty, const RenderObject::PaintInfo*);
+
+ RenderBlock* block() const;
+
+ int selectionTop();
+ int selectionBottom() { return m_overflow ? m_overflow->m_selectionBottom : m_y + m_height; }
+ int selectionHeight() { return max(0, selectionBottom() - selectionTop()); }
+
+ InlineBox* closestLeafChildForXPos(int x, bool onlyEditableLeaves = false);
+
+protected:
+ // Normally we are only as tall as the style on our block dictates, but we might have content
+ // that spills out above the height of our font (e.g, a tall image), or something that extends further
+ // below our line (e.g., a child whose font has a huge descent).
+
+ // Allocated only when some of these fields have non-default values
+ struct Overflow {
+ Overflow(RootInlineBox* box)
+ : m_topOverflow(box->m_y)
+ , m_bottomOverflow(box->m_y + box->m_height)
+ , m_leftOverflow(box->m_x)
+ , m_rightOverflow(box->m_x + box->m_width)
+ , m_selectionTop(box->m_y)
+ , m_selectionBottom(box->m_y + box->m_height)
+ {
+ }
+ void destroy(RenderArena*);
+ void* operator new(size_t, RenderArena*) throw();
+ void operator delete(void*, size_t);
+
+ int m_topOverflow;
+ int m_bottomOverflow;
+ int m_leftOverflow;
+ int m_rightOverflow;
+ int m_selectionTop;
+ int m_selectionBottom;
+ private:
+ void* operator new(size_t) throw();
+ };
+
+ Overflow* m_overflow;
+
+ // Where this line ended. The exact object and the position within that object are stored so that
+ // we can create a BidiIterator beginning just after the end of this line.
+ RenderObject* m_lineBreakObj;
+ unsigned m_lineBreakPos;
+ RefPtr<BidiContext> m_lineBreakContext;
+
+ // The height of the block at the end of this line. This is where the next line starts.
+ int m_blockHeight;
+
+ WTF::Unicode::Direction m_lineBreakBidiStatusEor : 5;
+ WTF::Unicode::Direction m_lineBreakBidiStatusLastStrong : 5;
+ WTF::Unicode::Direction m_lineBreakBidiStatusLast : 5;
+};
+
+inline void RootInlineBox::setHorizontalOverflowPositions(int left, int right)
+{
+ if (!m_overflow) {
+ if (left == m_x && right == m_x + m_width)
+ return;
+ m_overflow = new (m_object->renderArena()) Overflow(this);
+ }
+ m_overflow->m_leftOverflow = left;
+ m_overflow->m_rightOverflow = right;
+}
+
+inline void RootInlineBox::setVerticalSelectionPositions(int top, int bottom)
+{
+ if (!m_overflow) {
+ if (top == m_y && bottom == m_y + m_height)
+ return;
+ m_overflow = new (m_object->renderArena()) Overflow(this);
+ }
+ m_overflow->m_selectionTop = top;
+ m_overflow->m_selectionBottom = bottom;
+}
+
+} // namespace WebCore
+
+#endif // RootInlineBox_h