#ifndef __ARABICSHAPING_H
#define __ARABICSHAPING_H
#include "LETypes.h"
#include "OpenTypeTables.h"
U_NAMESPACE_BEGIN
class Shaper {
public:
virtual inline ~Shaper() {};
virtual void init(LEUnicode ch, le_int32 outIndex, le_bool isloate) = 0;
virtual void shape(le_int32 outIndex, le_int32 shapeOffset) = 0;
};
class ArabicShaping {
public:
enum ShapingBitMasks
{
MASK_SHAPE_RIGHT = 1, MASK_SHAPE_LEFT = 2, MASK_TRANSPARENT = 4, MASK_NOSHAPE = 8 };
enum ShapeTypeValues
{
ST_NONE = 0,
ST_RIGHT = MASK_SHAPE_RIGHT,
ST_LEFT = MASK_SHAPE_LEFT,
ST_DUAL = MASK_SHAPE_RIGHT | MASK_SHAPE_LEFT,
ST_TRANSPARENT = MASK_TRANSPARENT,
ST_NOSHAPE_DUAL = MASK_NOSHAPE | ST_DUAL,
ST_NOSHAPE_NONE = MASK_NOSHAPE
};
typedef le_int32 ShapeType;
static void shape(const LEUnicode *chars, le_int32 offset, le_int32 charCount, le_int32 charMax,
le_bool rightToLeft, Shaper &shaper);
static const LETag *getFeatureOrder();
static const le_uint8 glyphSubstitutionTable[];
static const le_uint8 glyphDefinitionTable[];
private:
ArabicShaping();
static ShapeType getShapeType(LEUnicode c);
static const ShapeType shapeTypes[];
};
class GlyphShaper : public UMemory, public Shaper
{
public:
virtual void init(LEUnicode ch, le_int32 outIndex, le_bool isolate);
virtual void shape(le_int32 outIndex, le_int32 shapeOffset);
GlyphShaper(const LETag **outputTags);
~GlyphShaper();
private:
const LETag **charTags;
static const LETag tagArray[];
GlyphShaper(const GlyphShaper &other); GlyphShaper &operator=(const GlyphShaper &other); };
class CharShaper : public UMemory, public Shaper
{
public:
virtual void init(LEUnicode ch, le_int32 outIndex, le_bool isolate);
virtual void shape(le_int32 outIndex, le_int32 shapeOffset);
CharShaper(LEUnicode *outputChars);
~CharShaper();
private:
LEUnicode *chars;
static const LEUnicode isolateShapes[];
static LEUnicode getToIsolateShape(LEUnicode ch);
CharShaper(const CharShaper &other); CharShaper &operator=(const CharShaper &other); };
U_NAMESPACE_END
#endif