diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/SVGCharacterLayoutInfo.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/SVGCharacterLayoutInfo.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
+ *
+ * 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 SVGCharacterLayoutInfo_h
+#define SVGCharacterLayoutInfo_h
+
+#if ENABLE(SVG)
+#include "Path.h"
+#include <wtf/Assertions.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class InlineFlowBox;
+class SVGElement;
+class SVGLengthList;
+class SVGNumberList;
+class SVGTextPositioningElement;
+
+template<class Type>
+class PositionedVector : public Vector<Type> {
+public:
+    PositionedVector<Type>()
+        : m_position(0)
+    {
+    }
+
+    unsigned position() const
+    {
+        return m_position;
+    }
+
+    void advance(unsigned position)
+    {
+        m_position += position;
+        ASSERT(m_position < Vector<Type>::size());
+    }
+
+    Type valueAtCurrentPosition() const
+    {
+        ASSERT(m_position < Vector<Type>::size());
+        return Vector<Type>::at(m_position);
+    }
+
+private:
+    unsigned m_position;
+};
+
+class PositionedFloatVector : public PositionedVector<float> { };
+struct SVGChar;
+
+struct SVGCharacterLayoutInfo {
+    SVGCharacterLayoutInfo();
+
+    enum StackType { XStack, YStack, DxStack, DyStack, AngleStack, BaselineShiftStack };
+
+    bool xValueAvailable() const;
+    bool yValueAvailable() const;
+    bool dxValueAvailable() const;
+    bool dyValueAvailable() const;
+    bool angleValueAvailable() const;
+    bool baselineShiftValueAvailable() const;
+
+    float xValueNext() const;
+    float yValueNext() const;
+    float dxValueNext() const;
+    float dyValueNext() const;
+    float angleValueNext() const;
+    float baselineShiftValueNext() const;
+
+    void processedChunk(float savedShiftX, float savedShiftY);
+    void processedSingleCharacter();
+
+    bool nextPathLayoutPointAndAngle(float glyphAdvance, float extraAdvance, float newOffset);
+
+    // Used for text-on-path.
+    void addLayoutInformation(InlineFlowBox*, float textAnchorOffset = 0.0f);
+
+    bool inPathLayout() const;
+    void setInPathLayout(bool value);
+
+    // Used for anything else.
+    void addLayoutInformation(SVGTextPositioningElement*);
+
+    // Global position
+    float curx;
+    float cury;
+
+    // Global rotation
+    float angle;
+
+    // Accumulated dx/dy values
+    float dx;
+    float dy;
+
+    // Accumulated baseline-shift values
+    float shiftx;
+    float shifty;
+
+    // Path specific advance values to handle lengthAdjust
+    float pathExtraAdvance;
+    float pathTextLength;
+    float pathChunkLength;
+
+    // Result vector
+    Vector<SVGChar> svgChars;
+    bool nextDrawnSeperated : 1;
+
+private:
+    // Used for baseline-shift.
+    void addStackContent(StackType, float);
+
+    // Used for angle.
+    void addStackContent(StackType, SVGNumberList*);
+
+    // Used for x/y/dx/dy.    
+    void addStackContent(StackType, SVGLengthList*, const SVGElement*);
+
+    void addStackContent(StackType, const PositionedFloatVector&);
+
+    void xStackWalk();
+    void yStackWalk();
+    void dxStackWalk();
+    void dyStackWalk();
+    void angleStackWalk();
+    void baselineShiftStackWalk();
+
+    bool isInitialLayout() const;
+
+private:
+    bool xStackChanged : 1;
+    bool yStackChanged : 1;
+    bool dxStackChanged : 1;
+    bool dyStackChanged : 1;
+    bool angleStackChanged : 1;
+    bool baselineShiftStackChanged : 1;
+
+    // text on path layout
+    bool pathLayout : 1;
+    float currentOffset;
+    float startOffset;
+    float layoutPathLength;
+    Path layoutPath;
+
+    Vector<PositionedFloatVector> xStack;
+    Vector<PositionedFloatVector> yStack;
+    Vector<PositionedFloatVector> dxStack;
+    Vector<PositionedFloatVector> dyStack;
+    Vector<PositionedFloatVector> angleStack;
+    Vector<float> baselineShiftStack;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(SVG)
+#endif // SVGCharacterLayoutInfo_h