--- /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