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  * © 2006-2007 Jukka Salmi <jukka at salmi dot ch>
   4  * © 2007 Premysl Hruby <dfenze at gmail dot com>
   5  * © 2007 Szabolcs Nagy <nszabolcs at gmail dot com>
   6  * See LICENSE file for license details. */
   7 #include "dwm.h"
   8 #include <string.h>
   9
  10 /* static */
  11
  12 static void
  13 drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
  14         int x;
  15         XGCValues gcv;
  16         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  17
  18         gcv.foreground = col[ColFG];
  19         XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  20         x = (dc.font.ascent + dc.font.descent + 2) / 4;
  21         r.x = dc.x + 1;
  22         r.y = dc.y + 1;
  23         if(filled) {
  24                 r.width = r.height = x + 1;
  25                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  26         }
  27         else if(empty) {
  28                 r.width = r.height = x;
  29                 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  30         }
  31 }
  32
  33 static Bool
  34 isoccupied(unsigned int t) {
  35         Client *c;
  36
  37         for(c = clients; c; c = c->next)
  38                 if(c->tags[t])
  39                         return True;
  40         return False;
  41 }
  42
  43 static unsigned int
  44 textnw(const char *text, unsigned int len) {
  45         XRectangle r;
  46
  47         if(dc.font.set) {
  48                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  49                 return r.width;
  50         }
  51         return XTextWidth(dc.font.xfont, text, len);
  52 }
  53
  54 /* extern */
  55
  56 void
  57 drawstatus(void) {
  58         int i, x;
  59
  60         dc.x = dc.y = 0;
  61         for(i = 0; i < ntags; i++) {
  62                 dc.w = textw(tags[i]);
  63                 if(seltag[i]) {
  64                         drawtext(tags[i], dc.sel);
  65                         drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
  66                 }
  67                 else {
  68                         drawtext(tags[i], dc.norm);
  69                         drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
  70                 }
  71                 dc.x += dc.w;
  72         }
  73         dc.w = blw;
  74         drawtext(lt->symbol, dc.norm);
  75         x = dc.x + dc.w;
  76         dc.w = textw(stext);
  77         dc.x = sw - dc.w;
  78         if(dc.x < x) {
  79                 dc.x = x;
  80                 dc.w = sw - x;
  81         }
  82         drawtext(stext, dc.norm);
  83         if((dc.w = dc.x - x) > bh) {
  84                 dc.x = x;
  85                 if(sel) {
  86                         drawtext(sel->name, dc.sel);
  87                         drawsquare(sel->ismax, sel->isfloating, dc.sel);
  88                 }
  89                 else
  90                         drawtext(NULL, dc.norm);
  91         }
  92         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
  93         XSync(dpy, False);
  94 }
  95
  96 void
  97 drawtext(const char *text, unsigned long col[ColLast]) {
  98         int x, y, w, h;
  99         static char buf[256];
 100         unsigned int len, olen;
 101         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 102
 103         XSetForeground(dpy, dc.gc, col[ColBG]);
 104         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 105         if(!text)
 106                 return;
 107         w = 0;
 108         olen = len = strlen(text);
 109         if(len >= sizeof buf)
 110                 len = sizeof buf - 1;
 111         memcpy(buf, text, len);
 112         buf[len] = 0;
 113         h = dc.font.ascent + dc.font.descent;
 114         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 115         x = dc.x + (h / 2);
 116         /* shorten text if necessary */
 117         while(len && (w = textnw(buf, len)) > dc.w - h)
 118                 buf[--len] = 0;
 119         if(len < olen) {
 120                 if(len > 1)
 121                         buf[len - 1] = '.';
 122                 if(len > 2)
 123                         buf[len - 2] = '.';
 124                 if(len > 3)
 125                         buf[len - 3] = '.';
 126         }
 127         if(w > dc.w)
 128                 return; /* too long */
 129         XSetForeground(dpy, dc.gc, col[ColFG]);
 130         if(dc.font.set)
 131                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 132         else
 133                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 134 }
 135
 136 unsigned int
 137 textw(const char *text) {
 138         return textnw(text, strlen(text)) + dc.font.height;
 139 }