draw.c

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