draw/initfont.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <X11/Xlib.h>
   3 #include "draw.h"
   4
   5 #define MAX(a, b)               ((a) > (b) ? (a) : (b))
   6
   7 void
   8 initfont(DC *dc, const char *fontstr) {
   9         char *def, **missing = NULL;
  10         int i, n;
  11
  12         if(!fontstr || !*fontstr)
  13                 eprint("cannot load null font\n");
  14         dc->font.set = XCreateFontSet(dc->dpy, fontstr, &missing, &n, &def);
  15         if(missing)
  16                 XFreeStringList(missing);
  17         if(dc->font.set) {
  18                 XFontStruct **xfonts;
  19                 char **font_names;
  20                 dc->font.ascent = dc->font.descent = 0;
  21                 n = XFontsOfFontSet(dc->font.set, &xfonts, &font_names);
  22                 for(i = 0; i < n; i++) {
  23                         dc->font.ascent = MAX(dc->font.ascent, (*xfonts)->ascent);
  24                         dc->font.descent = MAX(dc->font.descent, (*xfonts)->descent);
  25                         xfonts++;
  26                 }
  27         }
  28         else {
  29                 if(!(dc->font.xfont = XLoadQueryFont(dc->dpy, fontstr))
  30                 && !(dc->font.xfont = XLoadQueryFont(dc->dpy, "fixed")))
  31                         eprint("cannot load font '%s'\n", fontstr);
  32                 dc->font.ascent = dc->font.xfont->ascent;
  33                 dc->font.descent = dc->font.xfont->descent;
  34         }
  35         dc->font.height = dc->font.ascent + dc->font.descent;
  36 }