draw.c

   1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
   2  * See LICENSE file for license details.
   3  */
   4 #include "dwm.h"
   5 #include <string.h>
   6
   7 /* static */
   8
   9 static void
  10 drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
  11         int x;
  12         XGCValues gcv;
  13         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  14
  15         gcv.foreground = col[ColFG];
  16         XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  17         x = (dc.font.ascent + dc.font.descent + 2) / 4;
  18         r.x = dc.x + 1;
  19         r.y = dc.y + 1;
  20         if(filled) {
  21                 r.width = r.height = x + 1;
  22                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  23         }
  24         else if(empty) {
  25                 r.width = r.height = x;
  26                 XDrawRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  27         }
  28 }
  29
  30 static Bool
  31 isoccupied(unsigned int t) {
  32         Client *c;
  33
  34         for(c = clients; c; c = c->next)
  35                 if(c->tags[t])
  36                         return True;
  37         return False;
  38 }
  39
  40 static unsigned int
  41 textnw(const char *text, unsigned int len) {
  42         XRectangle r;
  43
  44         if(dc.font.set) {
  45                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  46                 return r.width;
  47         }
  48         return XTextWidth(dc.font.xfont, text, len);
  49 }
  50
  51 /* extern */
  52
  53 void
  54 drawstatus(void) {
  55         int i, x;
  56
  57         dc.x = dc.y = 0;
  58         for(i = 0; i < ntags; i++) {
  59                 dc.w = textw(tags[i]);
  60                 if(seltag[i]) {
  61                         drawtext(tags[i], dc.sel);
  62                         drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
  63                 }
  64                 else {
  65                         drawtext(tags[i], dc.norm);
  66                         drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
  67                 }
  68                 dc.x += dc.w;
  69         }
  70         dc.w = blw;
  71         drawtext(lt->symbol, dc.norm);
  72         x = dc.x + dc.w;
  73         dc.w = textw(stext);
  74         dc.x = sw - dc.w;
  75         if(dc.x < x) {
  76                 dc.x = x;
  77                 dc.w = sw - x;
  78         }
  79         drawtext(stext, dc.norm);
  80         if((dc.w = dc.x - x) > bh) {
  81                 dc.x = x;
  82                 if(sel) {
  83                         drawtext(sel->name, dc.sel);
  84                         drawsquare(sel->ismax, sel->isversatile, dc.sel);
  85                 }
  86                 else
  87                         drawtext(NULL, dc.norm);
  88         }
  89         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, sw, bh, 0, 0);
  90         XSync(dpy, False);
  91 }
  92
  93 void
  94 drawtext(const char *text, unsigned long col[ColLast]) {
  95         int x, y, w, h;
  96         static char buf[256];
  97         unsigned int len, olen;
  98         XGCValues gcv;
  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         gcv.foreground = col[ColFG];
 128         if(dc.font.set) {
 129                 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
 130                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
 131         }
 132         else {
 133                 gcv.font = dc.font.xfont->fid;
 134                 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
 135                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 136         }
 137 }
 138
 139 unsigned int
 140 textw(const char *text) {
 141         return textnw(text, strlen(text)) + dc.font.height;
 142 }