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         XGCValues gcv;
  16         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  17
  18         XSetForeground(dpy, dc.gc, col[ColBG]);
  19         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  20         if(!text)
  21                 return;
  22         w = 0;
  23         olen = len = strlen(text);
  24         if(len >= sizeof buf)
  25                 len = sizeof buf - 1;
  26         memcpy(buf, text, len);
  27         buf[len] = 0;
  28         h = dc.font.ascent + dc.font.descent;
  29         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  30         x = dc.x + (h / 2);
  31         /* shorten text if necessary */
  32         while(len && (w = textnw(buf, len)) > dc.w - h)
  33                 buf[--len] = 0;
  34         if(len < olen) {
  35                 if(len > 1)
  36                         buf[len - 1] = '.';
  37                 if(len > 2)
  38                         buf[len - 2] = '.';
  39                 if(len > 3)
  40                         buf[len - 3] = '.';
  41         }
  42         if(w > dc.w)
  43                 return; /* too long */
  44         gcv.foreground = col[ColFG];
  45         if(dc.font.set) {
  46                 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  47                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc,
  48                                 x, y, buf, len);
  49         }
  50         else {
  51                 gcv.font = dc.font.xfont->fid;
  52                 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
  53                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  54         }
  55 }
  56
  57 unsigned int
  58 textw(const char *text) {
  59         return textnw(text, strlen(text)) + dc.font.height;
  60 }
  61
  62 unsigned int
  63 textnw(const char *text, unsigned int len) {
  64         XRectangle r;
  65
  66         if(dc.font.set) {
  67                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  68                 return r.width;
  69         }
  70         return XTextWidth(dc.font.xfont, text, len);
  71 }