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