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