168 lines
3 KiB
C
168 lines
3 KiB
C
#pragma src "/sys/src/libttf"
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#pragma lib "libttf.a"
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typedef struct TTTable TTTable;
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typedef struct TTChMap TTChMap;
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typedef struct TTPoint TTPoint;
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typedef struct TTGlyph TTGlyph;
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typedef struct TTGlyphInfo TTGlyphInfo;
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typedef struct TTFontU TTFontU;
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typedef struct TTFont TTFont;
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typedef struct TTFunction TTFunction;
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typedef struct TTGState TTGState;
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typedef struct TTBitmap TTBitmap;
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typedef struct TTKern TTKern;
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typedef struct Biobuf Biobuf;
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struct TTTable {
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u32int tag;
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u32int csum;
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u32int offset;
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u32int len;
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};
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struct TTChMap {
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int start, end, delta;
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int *tab;
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enum {
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TTCDELTA16 = 1,
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TTCINVALID = 2,
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} flags;
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int temp;
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};
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struct TTPoint {
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int x, y;
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u8int flags;
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};
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struct TTBitmap {
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u8int *bit;
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int width, height, stride;
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};
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struct TTGlyph {
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TTBitmap;
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int idx;
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int xmin, xmax, ymin, ymax;
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int xminpx, xmaxpx, yminpx, ymaxpx;
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int advanceWidthpx;
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TTPoint *pt;
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TTPoint *ptorg;
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int npt;
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u16int *confst;
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int ncon;
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u8int *hint;
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int nhint;
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TTFont *font;
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TTGlyphInfo *info;
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};
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struct TTGlyphInfo {
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int loca;
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u16int advanceWidth;
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short lsb;
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};
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struct TTFunction {
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u8int *pgm;
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int npgm;
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};
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struct TTGState {
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int pvx, pvy;
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int dpvx, dpvy;
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int fvx, fvy;
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u32int instctrl;
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u32int scanctrl;
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u32int scantype;
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int rperiod, rphase, rthold;
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u8int zp;
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int rp[3];
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int cvci;
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int loop;
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int mindist;
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int deltabase, deltashift;
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u8int autoflip;
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u32int singlewval, singlewci;
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};
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struct TTKern {
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u32int idx;
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int val;
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};
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struct TTFontU {
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int ref;
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Biobuf *bin;
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TTTable *tab;
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u16int ntab;
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TTChMap *cmap;
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int ncmap;
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short *cvtu;
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int ncvtu;
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u16int flags;
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int emsize;
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short xmin, ymin, xmax, ymax;
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u16int longloca;
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TTGlyphInfo *ginfo;
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u16int numGlyphs;
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u16int maxPoints;
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u16int maxCountours;
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u16int maxComponentPoints;
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u16int maxComponentCountours;
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u16int maxZones;
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u16int maxTwilightPoints;
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u16int maxStorage;
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u16int maxFunctionDefs;
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u16int maxInstructionDefs;
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u16int maxStackElements;
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u16int maxSizeOfInstructions;
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u16int maxComponentElements;
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u16int maxComponentDepth;
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int ascent, descent;
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u16int advanceWidthMax;
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u16int minLeftSideBearing;
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u16int minRightSideBearing;
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u16int xMaxExtent;
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u16int numOfLongHorMetrics;
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TTKern *kern;
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int nkern;
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};
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struct TTFont {
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TTFontU *u;
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int ascentpx, descentpx;
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int ppem;
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TTGState;
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TTGState defstate;
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TTPoint *twilight, *twiorg;
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u32int *hintstack;
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TTFunction *func;
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u32int *storage;
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int *cvt;
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int ncvt;
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};
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TTFont *ttfopen(char *, int, int);
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TTFont *ttfscale(TTFont *, int, int);
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void ttfclose(TTFont *);
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int ttffindchar(TTFont *, Rune);
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int ttfenumchar(TTFont *, Rune, Rune *);
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TTGlyph *ttfgetglyph(TTFont *, int, int);
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void ttfputglyph(TTGlyph *);
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int ttfgetcontour(TTGlyph *, int, float **, int *);
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enum {
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TTFLALIGN = 0,
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TTFRALIGN = 1,
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TTFCENTER = 2,
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TTFMODE = 3,
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TTFJUSTIFY = 4,
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};
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TTBitmap *ttfrender(TTFont *, char *, char *, int, int, int, char **);
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TTBitmap *ttfrunerender(TTFont *, Rune *, Rune *, int, int, int, Rune **);
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TTBitmap *ttfnewbitmap(int, int);
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void ttffreebitmap(TTBitmap *);
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void ttfblit(TTBitmap *, int, int, TTBitmap *, int, int, int, int);
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