draw.c

   1 /* © 2004-2007 Anselm R. Garbe <garbeam at gmail dot com>
   2  * See LICENSE file for license details. */
   3 #include "dwm.h"
   4 #include <string.h>
   5
   6 /* static */
   7
   8 static void
   9 drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
  10         int x;
  11         XGCValues gcv;
  12         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  13
  14         gcv.foreground = col[ColFG];
  15         XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  16         x = (dc.font.ascent + dc.font.descent + 2) / 4;
  17         r.x = dc.x + 1;
  18         r.y = dc.y + 1;
  19         if(filled) {
  20                 r.width = r.height = x + 1;
  21                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  22         }
  23         else if(empty) {
  24                 r.width = r.height = x;
  25                 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  26         }
  27 }
  28
  29 static Bool
  30 isoccupied(unsigned int t) {
  31         Client *c;
  32
  33         for(c = clients; c; c = c->next)
  34                 if(c->tags[t])
  35                         return True;
  36         return False;
  37 }
  38
  39 static unsigned int
  40 textnw(const char *text, unsigned int len) {
  41         XRectangle r;
  42
  43         if(dc.font.set) {
  44                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  45                 return r.width;
  46         }
  47         return XTextWidth(dc.font.xfont, text, len);
  48 }
  49
  50 /* extern */
  51
  52 void
  53 drawstatus(void) {
  54         int i, x;
  55
  56         dc.x = dc.y = 0;
  57         for(i = 0; i < ntags; i++) {
  58                 dc.w = textw(tags[i]);
  59                 if(seltag[i]) {
  60                         drawtext(tags[i], dc.sel);
  61                         drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
  62                 }
  63                 else {
  64                         drawtext(tags[i], dc.norm);
  65                         drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
  66                 }
  67                 dc.x += dc.w;
  68         }
  69         dc.w = blw;
  70         drawtext(lt->symbol, dc.norm);
  71         x = dc.x + dc.w;
  72         dc.w = textw(stext);
  73         dc.x = sw - dc.w;
  74         if(dc.x < x) {
  75                 dc.x = x;
  76                 dc.w = sw - x;
  77         }
  78         drawtext(stext, dc.norm);
  79         if((dc.w = dc.x - x) > bh) {
  80                 dc.x = x;
  81                 if(sel) {
  82                         drawtext(sel->name, dc.sel);
  83                         drawsquare(sel->ismax, sel->isfloating, dc.sel);
  84                 }
  85                 else
  86                         drawtext(NULL, dc.norm);
  87         }
  88         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
  89         XSync(dpy, False);
  90 }
  91
  92 void
  93 drawtext(const char *text, unsigned long col[ColLast]) {
  94         int x, y, w, h;
  95         static char buf[256];
  96         unsigned int len, olen;
  97         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  98
  99         XSetForeground(dpy, dc.gc, col[ColBG]);
 100         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 101         if(!text)
 102                 return;
 103         w = 0;
 104         olen = len = strlen(text);
 105         if(len >= sizeof buf)
 106                 len = sizeof buf - 1;
 107         memcpy(buf, text, len);
 108         buf[len] = 0;
 109         h = dc.font.ascent + dc.font.descent;
 110         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 111         x = dc.x + (h / 2);
 112         /* shorten text if necessary */
 113         while(len && (w = textnw(buf, len)) > dc.w - h)
 114                 buf[--len] = 0;
 115         if(len < olen) {
 116                 if(len > 1)
 117                         buf[len - 1] = '.';
 118                 if(len > 2)
 119                         buf[len - 2] = '.';
 120                 if(len > 3)
 121                         buf[len - 3] = '.';
 122         }
 123         if(w > dc.w)
 124                 return; /* too long */
 125         XSetForeground(dpy, dc.gc, col[ColFG]);
 126         if(dc.font.set)
 127                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 128         else
 129                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 130 }
 131
 132 unsigned int
 133 textw(const char *text) {
 134         return textnw(text, strlen(text)) + dc.font.height;
 135 }