draw.c

   1 /* © 2006-2007 Anselm R. Garbe <garbeam at gmail dot com>
   2  * © 2006-2007 Sander van Dijk <a dot h dot vandijk at gmail dot com>
   3  * See LICENSE file for license details. */
   4 #include "dmenu.h"
   5 #include <string.h>
   6
   7 /* extern */
   8
   9 void
  10 drawtext(const char *text, unsigned long col[ColLast]) {
  11         int x, y, w, h;
  12         static char buf[256];
  13         unsigned int len, olen;
  14         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  15
  16         XSetForeground(dpy, dc.gc, col[ColBG]);
  17         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  18         if(!text)
  19                 return;
  20         w = 0;
  21         olen = len = strlen(text);
  22         if(len >= sizeof buf)
  23                 len = sizeof buf - 1;
  24         memcpy(buf, text, len);
  25         buf[len] = 0;
  26         h = dc.font.ascent + dc.font.descent;
  27         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  28         x = dc.x + (h / 2);
  29         /* shorten text if necessary */
  30         while(len && (w = textnw(buf, len)) > dc.w - h)
  31                 buf[--len] = 0;
  32         if(len < olen) {
  33                 if(len > 1)
  34                         buf[len - 1] = '.';
  35                 if(len > 2)
  36                         buf[len - 2] = '.';
  37                 if(len > 3)
  38                         buf[len - 3] = '.';
  39         }
  40         if(w > dc.w)
  41                 return; /* too long */
  42         XSetForeground(dpy, dc.gc, col[ColFG]);
  43         if(dc.font.set)
  44                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  45         else
  46                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  47 }
  48
  49 unsigned int
  50 textw(const char *text) {
  51         return textnw(text, strlen(text)) + dc.font.height;
  52 }
  53
  54 unsigned int
  55 textnw(const char *text, unsigned int len) {
  56         XRectangle r;
  57
  58         if(dc.font.set) {
  59                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  60                 return r.width;
  61         }
  62         return XTextWidth(dc.font.xfont, text, len);
  63 }