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Annotation of researchv9/jerq/include/font.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * <font.h> - Jerq font format
        !             3:  *
        !             4:  * given char c, Font *f, Fontchar *i, and Point p, one says
        !             5:  *     i = f->info+c;
        !             6:  *     bitblt(f->bits,Rect(i->x,i->top,(i+1)->x,i->bottom),
        !             7:  *             b,Pt(p.x+left,p.y),fc);
        !             8:  *     p.x += i->width;
        !             9:  *
        !            10:  *     BEWARE: if you change Font or Fontchar, look very carefully at
        !            11:  *     /usr/jerq/src/lib/defont.c
        !            12:  */
        !            13: #ifndef        FONT_H
        !            14: #define        FONT_H
        !            15: 
        !            16: typedef struct Fontchar
        !            17: {
        !            18:        short x;                /* left edge of bits */
        !            19:        unsigned char top;      /* first non-zero scan-line */
        !            20:        unsigned char bottom;   /* last non-zero scan-line */
        !            21:        char left;              /* offset of baseline */
        !            22:        unsigned char width;    /* width of baseline */
        !            23: } Fontchar;
        !            24: 
        !            25: typedef struct Font
        !            26: {
        !            27:        short n;                /* number of chars in font */
        !            28:        char height;            /* height of bitmap */
        !            29:        char ascent;            /* top of bitmap to baseline */
        !            30:        long unused;            /* in case we think of more stuff */
        !            31:        Bitmap *bits;           /* where the characters are */
        !            32:        Fontchar info[1];               /* n+1 character descriptors */
        !            33: } Font;
        !            34: 
        !            35: #endif
        !            36: 
        !            37: extern Font *infont();         /* takes an argument char (*inchar)() */
        !            38: extern Font *getfont();                /* takes the font name char *name */
        !            39: #ifndef                DEFONT
        !            40: #ifdef         MUX
        !            41: #define        defont  (*((Font *)Sys[1]))
        !            42: #else
        !            43: extern Font defont;
        !            44: #endif         DEFONT
        !            45: #endif

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