draw.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include "dmenu.h"
   3 #include <string.h>
   4
   5 /* extern */
   6
   7 void
   8 drawtext(const char *text, unsigned long col[ColLast]) {
   9         int x, y, w, h;
  10         static char buf[256];
  11         unsigned int len, olen;
  12         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  13
  14         XSetForeground(dpy, dc.gc, col[ColBG]);
  15         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  16         if(!text)
  17                 return;
  18         w = 0;
  19         olen = len = strlen(text);
  20         if(len >= sizeof buf)
  21                 len = sizeof buf - 1;
  22         memcpy(buf, text, len);
  23         buf[len] = 0;
  24         h = dc.font.ascent + dc.font.descent;
  25         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  26         x = dc.x + (h / 2);
  27         /* shorten text if necessary */
  28         while(len && (w = textnw(buf, len)) > dc.w - h)
  29                 buf[--len] = 0;
  30         if(len < olen) {
  31                 if(len > 1)
  32                         buf[len - 1] = '.';
  33                 if(len > 2)
  34                         buf[len - 2] = '.';
  35                 if(len > 3)
  36                         buf[len - 3] = '.';
  37         }
  38         if(w > dc.w)
  39                 return; /* too long */
  40         XSetForeground(dpy, dc.gc, col[ColFG]);
  41         if(dc.font.set)
  42                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  43         else
  44                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  45 }
  46
  47 unsigned int
  48 textw(const char *text) {
  49         return textnw(text, strlen(text)) + dc.font.height;
  50 }
  51
  52 unsigned int
  53 textnw(const char *text, unsigned int len) {
  54         XRectangle r;
  55
  56         if(dc.font.set) {
  57                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  58                 return r.width;
  59         }
  60         return XTextWidth(dc.font.xfont, text, len);
  61 }