draw/drawtext.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <string.h>
   3 #include <X11/Xlib.h>
   4 #include "draw.h"
   5
   6 #define MIN(a, b)               ((a) < (b) ? (a) : (b))
   7
   8 void
   9 drawtext(DC *dc, const char *text, unsigned long col[ColLast], Bool invert) {
  10         char buf[256];
  11         int i, x, y, h, len, olen;
  12         XRectangle r = { dc->x, dc->y, dc->w, dc->h };
  13
  14         XSetForeground(dc->dpy, dc->gc, col[invert ? ColFG : ColBG]);
  15         XFillRectangles(dc->dpy, dc->drawable, dc->gc, &r, 1);
  16         if(!text)
  17                 return;
  18         olen = strlen(text);
  19         h = dc->font.height;
  20         y = dc->y + ((h+2) / 2) - (h / 2) + dc->font.ascent;
  21         x = dc->x + (h / 2);
  22         /* shorten text if necessary */
  23         for(len = MIN(olen, sizeof buf); len && textnw(dc, text, len) > dc->w - h; len--);
  24         if(!len)
  25                 return;
  26         memcpy(buf, text, len);
  27         if(len < olen)
  28                 for(i = len; i && i > len - 3; buf[--i] = '.');
  29         XSetForeground(dc->dpy, dc->gc, col[invert ? ColBG : ColFG]);
  30         if(dc->font.set)
  31                 XmbDrawString(dc->dpy, dc->drawable, dc->font.set, dc->gc, x, y, buf, len);
  32         else
  33                 XDrawString(dc->dpy, dc->drawable, dc->gc, x, y, buf, len);
  34 }