draw.c

   1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
   2  * (C)opyright MMVI-MMVII Sander van Dijk <a dot h dot vandijk at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dmenu.h"
   6 #include <string.h>
   7
   8 /* extern */
   9
  10 void
  11 drawtext(const char *text, unsigned long col[ColLast]) {
  12         int x, y, w, h;
  13         static char buf[256];
  14         unsigned int len, olen;
  15         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  16
  17         XSetForeground(dpy, dc.gc, col[ColBG]);
  18         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  19         if(!text)
  20                 return;
  21         w = 0;
  22         olen = len = strlen(text);
  23         if(len >= sizeof buf)
  24                 len = sizeof buf - 1;
  25         memcpy(buf, text, len);
  26         buf[len] = 0;
  27         h = dc.font.ascent + dc.font.descent;
  28         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  29         x = dc.x + (h / 2);
  30         /* shorten text if necessary */
  31         while(len && (w = textnw(buf, len)) > dc.w - h)
  32                 buf[--len] = 0;
  33         if(len < olen) {
  34                 if(len > 1)
  35                         buf[len - 1] = '.';
  36                 if(len > 2)
  37                         buf[len - 2] = '.';
  38                 if(len > 3)
  39                         buf[len - 3] = '.';
  40         }
  41         if(w > dc.w)
  42                 return; /* too long */
  43         XSetForeground(dpy, dc.gc, col[ColFG]);
  44         if(dc.font.set)
  45                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  46         else
  47                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  48 }
  49
  50 unsigned int
  51 textw(const char *text) {
  52         return textnw(text, strlen(text)) + dc.font.height;
  53 }
  54
  55 unsigned int
  56 textnw(const char *text, unsigned int len) {
  57         XRectangle r;
  58
  59         if(dc.font.set) {
  60                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  61                 return r.width;
  62         }
  63         return XTextWidth(dc.font.xfont, text, len);
  64 }