SVGTextMetricsBuilder.h [plain text]
#ifndef SVGTextMetricsBuilder_h
#define SVGTextMetricsBuilder_h
#if ENABLE(SVG)
#include "SVGTextLayoutAttributes.h"
#include "SVGTextMetrics.h"
#include "TextRun.h"
#include "WidthIterator.h"
#include <wtf/Vector.h>
namespace WebCore {
class RenderObject;
class RenderSVGInlineText;
class RenderSVGText;
struct MeasureTextData;
class SVGTextMetricsBuilder {
WTF_MAKE_NONCOPYABLE(SVGTextMetricsBuilder);
public:
SVGTextMetricsBuilder();
void measureTextRenderer(RenderSVGInlineText*);
void buildMetricsAndLayoutAttributes(RenderSVGText*, RenderSVGInlineText* stopAtLeaf, SVGCharacterDataMap& allCharactersMap);
private:
bool advance();
void advanceSimpleText();
void advanceComplexText();
bool currentCharacterStartsSurrogatePair() const;
void initializeMeasurementWithTextRenderer(RenderSVGInlineText*);
void walkTree(RenderObject*, RenderSVGInlineText* stopAtLeaf, MeasureTextData*);
void measureTextRenderer(RenderSVGInlineText*, MeasureTextData*);
RenderSVGInlineText* m_text;
TextRun m_run;
unsigned m_textPosition;
bool m_isComplexText;
SVGTextMetrics m_currentMetrics;
float m_totalWidth;
OwnPtr<WidthIterator> m_simpleWidthIterator;
SVGTextMetrics m_complexStartToCurrentMetrics;
};
}
#endif // ENABLE(SVG)
#endif