tstringsubfont.c - plan9port - [fork] Plan 9 from user space
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       ---
       tstringsubfont.c (960B)
       ---
            1 #include <u.h>
            2 #include <libc.h>
            3 #include <draw.h>
            4 
            5 Point
            6 stringsubfont(Image *b, Point p, Image *color, Subfont *f, char *cs)
            7 {
            8         int w, width;
            9         uchar *s;
           10         Rune c;
           11         Fontchar *i;
           12 
           13         s = (uchar*)cs;
           14         for(; c=*s; p.x+=width){
           15                 width = 0;
           16                 if(c < Runeself)
           17                         s++;
           18                 else{
           19                         w = chartorune(&c, (char*)s);
           20                         if(w == 0){
           21                                 s++;
           22                                 continue;
           23                         }
           24                         s += w;
           25                 }
           26                 if(c >= f->n)
           27                         continue;
           28                 i = f->info+c;
           29                 width = i->width;
           30                 draw(b, Rect(p.x+i->left, p.y+i->top, p.x+i->left+(i[1].x-i[0].x), p.y+i->bottom),
           31                         color, f->bits, Pt(i->x, i->top));
           32         }
           33         return p;
           34 }
           35 
           36 Point
           37 strsubfontwidth(Subfont *f, char *cs)
           38 {
           39         Rune c;
           40         Point p;
           41         uchar *s;
           42         Fontchar *i;
           43         int w, width;
           44 
           45         p = Pt(0, f->height);
           46         s = (uchar*)cs;
           47         for(; c=*s; p.x+=width){
           48                 width = 0;
           49                 if(c < Runeself)
           50                         s++;
           51                 else{
           52                         w = chartorune(&c, (char*)s);
           53                         if(w == 0){
           54                                 s++;
           55                                 continue;
           56                         }
           57                         s += w;
           58                 }
           59                 if(c >= f->n)
           60                         continue;
           61                 i = f->info+c;
           62                 width = i->width;
           63         }
           64         return p;
           65 }