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//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/private/qglobal_p.h>
#ifndef QHARFBUZZ_P_H
#define QHARFBUZZ_P_H
#include <QtCore/qchar.h>
#if defined(QT_BUILD_CORE_LIB)
# include <harfbuzz-shaper.h>
#else
// a minimal set of HB types required for Qt libs other than Core
extern "C" {
typedef enum {
/* no error */
HB_Err_Ok = 0x0000,
HB_Err_Not_Covered = 0xFFFF,
/* _hb_err() is called whenever returning the following errors,
* and in a couple places for HB_Err_Not_Covered too. */
/* programmer error */
HB_Err_Invalid_Argument = 0x1A66,
/* font error */
HB_Err_Invalid_SubTable_Format = 0x157F,
HB_Err_Invalid_SubTable = 0x1570,
HB_Err_Read_Error = 0x6EAD,
/* system error */
HB_Err_Out_Of_Memory = 0xDEAD
} HB_Error;
typedef QT_PREPEND_NAMESPACE(qint8) hb_int8;
typedef QT_PREPEND_NAMESPACE(quint8) hb_uint8;
typedef QT_PREPEND_NAMESPACE(qint16) hb_int16;
typedef QT_PREPEND_NAMESPACE(quint16) hb_uint16;
typedef QT_PREPEND_NAMESPACE(qint32) hb_int32;
typedef QT_PREPEND_NAMESPACE(quint32) hb_uint32;
typedef hb_uint8 HB_Bool;
typedef hb_uint8 HB_Byte;
typedef hb_uint16 HB_UShort;
typedef hb_uint32 HB_UInt;
typedef hb_int8 HB_Char;
typedef hb_int16 HB_Short;
typedef hb_int32 HB_Int;
typedef hb_uint16 HB_UChar16;
typedef hb_uint32 HB_UChar32;
typedef hb_uint32 HB_Glyph;
typedef hb_int32 HB_Fixed; /* 26.6 */
typedef hb_int32 HB_16Dot16; /* 16.16 */
typedef hb_uint32 HB_Tag;
typedef struct {
HB_Fixed x;
HB_Fixed y;
} HB_FixedPoint;
typedef enum {
HB_Script_Common,
HB_Script_Greek,
HB_Script_Cyrillic,
HB_Script_Armenian,
HB_Script_Hebrew,
HB_Script_Arabic,
HB_Script_Syriac,
HB_Script_Thaana,
HB_Script_Devanagari,
HB_Script_Bengali,
HB_Script_Gurmukhi,
HB_Script_Gujarati,
HB_Script_Oriya,
HB_Script_Tamil,
HB_Script_Telugu,
HB_Script_Kannada,
HB_Script_Malayalam,
HB_Script_Sinhala,
HB_Script_Thai,
HB_Script_Lao,
HB_Script_Tibetan,
HB_Script_Myanmar,
HB_Script_Georgian,
HB_Script_Hangul,
HB_Script_Ogham,
HB_Script_Runic,
HB_Script_Khmer,
HB_Script_Nko,
HB_Script_Inherited,
HB_ScriptCount = HB_Script_Inherited
} HB_Script;
#ifdef __xlC__
typedef unsigned hb_bitfield;
#else
typedef hb_uint8 hb_bitfield;
#endif
typedef struct {
hb_bitfield justification :4; /* Justification class */
hb_bitfield clusterStart :1; /* First glyph of representation of cluster */
hb_bitfield mark :1; /* needs to be positioned around base char */
hb_bitfield zeroWidth :1; /* ZWJ, ZWNJ etc, with no width */
hb_bitfield dontPrint :1;
hb_bitfield combiningClass :8;
} HB_GlyphAttributes;
typedef void * HB_GDEF;
typedef void * HB_GSUB;
typedef void * HB_GPOS;
typedef void * HB_Buffer;
typedef HB_Error (*HB_GetFontTableFunc)(void *font, HB_Tag tag, HB_Byte *buffer, HB_UInt *length);
typedef struct HB_FaceRec_ {
HB_Bool isSymbolFont;
HB_GDEF gdef;
HB_GSUB gsub;
HB_GPOS gpos;
HB_Bool supported_scripts[HB_ScriptCount];
HB_Buffer buffer;
HB_Script current_script;
int current_flags; /* HB_ShaperFlags */
HB_Bool has_opentype_kerning;
HB_Bool glyphs_substituted;
HB_GlyphAttributes *tmpAttributes;
unsigned int *tmpLogClusters;
int length;
int orig_nglyphs;
void *font_for_init;
HB_GetFontTableFunc get_font_table_func;
} HB_FaceRec;
typedef struct {
HB_Fixed x, y;
HB_Fixed width, height;
HB_Fixed xOffset, yOffset;
} HB_GlyphMetrics;
typedef enum {
HB_FontAscent
} HB_FontMetric;
struct HB_Font_;
typedef struct HB_Font_ *HB_Font;
typedef struct HB_FaceRec_ *HB_Face;
typedef struct {
HB_Bool (*convertStringToGlyphIndices)(HB_Font font, const HB_UChar16 *string, hb_uint32 length, HB_Glyph *glyphs, hb_uint32 *numGlyphs, HB_Bool rightToLeft);
void (*getGlyphAdvances)(HB_Font font, const HB_Glyph *glyphs, hb_uint32 numGlyphs, HB_Fixed *advances, int flags /*HB_ShaperFlag*/);
HB_Bool (*canRender)(HB_Font font, const HB_UChar16 *string, hb_uint32 length);
/* implementation needs to make sure to load a scaled glyph, so /no/ FT_LOAD_NO_SCALE */
HB_Error (*getPointInOutline)(HB_Font font, HB_Glyph glyph, int flags /*HB_ShaperFlag*/, hb_uint32 point, HB_Fixed *xpos, HB_Fixed *ypos, hb_uint32 *nPoints);
void (*getGlyphMetrics)(HB_Font font, HB_Glyph glyph, HB_GlyphMetrics *metrics);
HB_Fixed (*getFontMetric)(HB_Font font, HB_FontMetric metric);
} HB_FontClass;
typedef struct HB_Font_ {
const HB_FontClass *klass;
/* Metrics */
HB_UShort x_ppem, y_ppem;
HB_16Dot16 x_scale, y_scale;
void *userData;
} HB_FontRec;
typedef enum {
HB_LeftToRight = 0,
HB_RightToLeft = 1
} HB_StringToGlyphsFlags;
typedef enum {
HB_ShaperFlag_Default = 0,
HB_ShaperFlag_NoKerning = 1,
HB_ShaperFlag_UseDesignMetrics = 2
} HB_ShaperFlag;
typedef struct
{
hb_uint32 pos;
hb_uint32 length;
HB_Script script;
hb_uint8 bidiLevel;
} HB_ScriptItem;
typedef struct HB_ShaperItem_ HB_ShaperItem;
struct HB_ShaperItem_ {
const HB_UChar16 *string; /* input: the Unicode UTF16 text to be shaped */
hb_uint32 stringLength; /* input: the length of the input in 16-bit words */
HB_ScriptItem item; /* input: the current run to be shaped: a run of text all in the same script that is a substring of <string> */
HB_Font font; /* input: the font: scale, units and function pointers supplying glyph indices and metrics */
HB_Face face; /* input: the shaper state; current script, access to the OpenType tables , etc. */
int shaperFlags; /* input (unused) should be set to 0; intended to support flags defined in HB_ShaperFlag */
HB_Bool glyphIndicesPresent; /* input: true if the <glyphs> array contains glyph indices ready to be shaped */
hb_uint32 initialGlyphCount; /* input: if glyphIndicesPresent is true, the number of glyph indices in the <glyphs> array */
hb_uint32 num_glyphs; /* input: capacity of output arrays <glyphs>, <attributes>, <advances>, <offsets>, and <log_clusters>; */
/* output: required capacity (may be larger than actual capacity) */
HB_Glyph *glyphs; /* output: <num_glyphs> indices of shaped glyphs */
HB_GlyphAttributes *attributes; /* output: <num_glyphs> glyph attributes */
HB_Fixed *advances; /* output: <num_glyphs> advances */
HB_FixedPoint *offsets; /* output: <num_glyphs> offsets */
unsigned short *log_clusters; /* output: for each output glyph, the index in the input of the start of its logical cluster */
/* internal */
HB_Bool kerning_applied; /* output: true if kerning was applied by the shaper */
};
}
#endif // QT_BUILD_CORE_LIB
QT_BEGIN_NAMESPACE
static inline HB_Script script_to_hbscript(uchar script)
{
switch (script) {
case QChar::Script_Inherited: return HB_Script_Inherited;
case QChar::Script_Common: return HB_Script_Common;
case QChar::Script_Arabic: return HB_Script_Arabic;
case QChar::Script_Armenian: return HB_Script_Armenian;
case QChar::Script_Bengali: return HB_Script_Bengali;
case QChar::Script_Cyrillic: return HB_Script_Cyrillic;
case QChar::Script_Devanagari: return HB_Script_Devanagari;
case QChar::Script_Georgian: return HB_Script_Georgian;
case QChar::Script_Greek: return HB_Script_Greek;
case QChar::Script_Gujarati: return HB_Script_Gujarati;
case QChar::Script_Gurmukhi: return HB_Script_Gurmukhi;
case QChar::Script_Hangul: return HB_Script_Hangul;
case QChar::Script_Hebrew: return HB_Script_Hebrew;
case QChar::Script_Kannada: return HB_Script_Kannada;
case QChar::Script_Khmer: return HB_Script_Khmer;
case QChar::Script_Lao: return HB_Script_Lao;
case QChar::Script_Malayalam: return HB_Script_Malayalam;
case QChar::Script_Myanmar: return HB_Script_Myanmar;
case QChar::Script_Ogham: return HB_Script_Ogham;
case QChar::Script_Oriya: return HB_Script_Oriya;
case QChar::Script_Runic: return HB_Script_Runic;
case QChar::Script_Sinhala: return HB_Script_Sinhala;
case QChar::Script_Syriac: return HB_Script_Syriac;
case QChar::Script_Tamil: return HB_Script_Tamil;
case QChar::Script_Telugu: return HB_Script_Telugu;
case QChar::Script_Thaana: return HB_Script_Thaana;
case QChar::Script_Thai: return HB_Script_Thai;
case QChar::Script_Tibetan: return HB_Script_Tibetan;
case QChar::Script_Nko: return HB_Script_Nko;
default: break;
};
return HB_Script_Common;
}
static inline uchar hbscript_to_script(uchar script)
{
switch (script) {
case HB_Script_Inherited: return QChar::Script_Inherited;
case HB_Script_Common: return QChar::Script_Common;
case HB_Script_Arabic: return QChar::Script_Arabic;
case HB_Script_Armenian: return QChar::Script_Armenian;
case HB_Script_Bengali: return QChar::Script_Bengali;
case HB_Script_Cyrillic: return QChar::Script_Cyrillic;
case HB_Script_Devanagari: return QChar::Script_Devanagari;
case HB_Script_Georgian: return QChar::Script_Georgian;
case HB_Script_Greek: return QChar::Script_Greek;
case HB_Script_Gujarati: return QChar::Script_Gujarati;
case HB_Script_Gurmukhi: return QChar::Script_Gurmukhi;
case HB_Script_Hangul: return QChar::Script_Hangul;
case HB_Script_Hebrew: return QChar::Script_Hebrew;
case HB_Script_Kannada: return QChar::Script_Kannada;
case HB_Script_Khmer: return QChar::Script_Khmer;
case HB_Script_Lao: return QChar::Script_Lao;
case HB_Script_Malayalam: return QChar::Script_Malayalam;
case HB_Script_Myanmar: return QChar::Script_Myanmar;
case HB_Script_Ogham: return QChar::Script_Ogham;
case HB_Script_Oriya: return QChar::Script_Oriya;
case HB_Script_Runic: return QChar::Script_Runic;
case HB_Script_Sinhala: return QChar::Script_Sinhala;
case HB_Script_Syriac: return QChar::Script_Syriac;
case HB_Script_Tamil: return QChar::Script_Tamil;
case HB_Script_Telugu: return QChar::Script_Telugu;
case HB_Script_Thaana: return QChar::Script_Thaana;
case HB_Script_Thai: return QChar::Script_Thai;
case HB_Script_Tibetan: return QChar::Script_Tibetan;
case HB_Script_Nko: return QChar::Script_Nko;
default: break;
};
return QChar::Script_Common;
}
Q_CORE_EXPORT HB_Bool qShapeItem(HB_ShaperItem *item);
// ### temporary
Q_CORE_EXPORT HB_Face qHBNewFace(void *font, HB_GetFontTableFunc tableFunc);
Q_CORE_EXPORT void qHBFreeFace(HB_Face);
Q_CORE_EXPORT HB_Face qHBLoadFace(HB_Face face);
Q_DECLARE_TYPEINFO(HB_GlyphAttributes, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(HB_FixedPoint, Q_PRIMITIVE_TYPE);
Q_DECLARE_TYPEINFO(HB_ScriptItem, Q_PRIMITIVE_TYPE);
QT_END_NAMESPACE
#endif // QHARFBUZZ_P_H