CoreTextController.h [plain text]
#ifndef CoreTextController_h
#define CoreTextController_h
#if USE(CORE_TEXT)
#include "Font.h"
#include "GlyphBuffer.h"
#include <wtf/RetainPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class CoreTextController {
public:
CoreTextController(const Font*, const TextRun&, bool mayUseNaturalWritingDirection = false, HashSet<const SimpleFontData*>* fallbackFonts = 0);
void advance(unsigned to, GlyphBuffer* = 0);
int offsetForPosition(int x, bool includePartialGlyphs);
float runWidthSoFar() const { return m_runWidthSoFar; }
float totalWidth() const { return m_totalWidth; }
float finalRoundingWidth() const { return m_finalRoundingWidth; }
private:
class CoreTextRun {
public:
CoreTextRun(CTRunRef, const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength);
CoreTextRun(const SimpleFontData*, const UChar* characters, unsigned stringLocation, size_t stringLength, bool ltr);
CTRunRef ctRun() const { return m_CTRun.get(); }
unsigned glyphCount() const { return m_glyphCount; }
const SimpleFontData* fontData() const { return m_fontData; }
const UChar* characters() const { return m_characters; }
unsigned stringLocation() const { return m_stringLocation; }
size_t stringLength() const { return m_stringLength; }
CFIndex indexAt(size_t i) const { return m_indices[i]; }
private:
RetainPtr<CTRunRef> m_CTRun;
unsigned m_glyphCount;
const SimpleFontData* m_fontData;
const UChar* m_characters;
unsigned m_stringLocation;
size_t m_stringLength;
const CFIndex* m_indices;
RetainPtr<CFMutableDataRef> m_indicesData;
};
void collectCoreTextRuns();
void collectCoreTextRunsForCharacters(const UChar*, unsigned length, unsigned stringLocation, const SimpleFontData*);
void adjustGlyphsAndAdvances();
const Font& m_font;
const TextRun& m_run;
bool m_mayUseNaturalWritingDirection;
Vector<UChar, 256> m_smallCapsBuffer;
Vector<CoreTextRun, 16> m_coreTextRuns;
Vector<CGSize, 256> m_adjustedAdvances;
Vector<CGGlyph, 256> m_adjustedGlyphs;
unsigned m_currentCharacter;
int m_end;
CGFloat m_totalWidth;
float m_runWidthSoFar;
unsigned m_numGlyphsSoFar;
size_t m_currentRun;
unsigned m_glyphInCurrentRun;
float m_finalRoundingWidth;
float m_padding;
float m_padPerSpace;
HashSet<const SimpleFontData*>* m_fallbackFonts;
unsigned m_lastRoundingGlyph;
};
} #endif // USE(CORE_TEXT)
#endif // CoreTextController_h