sys/src/libdraw/stringsubfont.c

   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 }