draw.c

   1 /*
   2  * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dwm.h"
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <X11/Xlocale.h>
   9
  10 /* static */
  11
  12 static unsigned int
  13 textnw(const char *text, unsigned int len)
  14 {
  15         XRectangle r;
  16
  17         if(dc.font.set) {
  18                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  19                 return r.width;
  20         }
  21         return XTextWidth(dc.font.xfont, text, len);
  22 }
  23
  24 static void
  25 drawtext(const char *text, Bool invert)
  26 {
  27         int x, y, w, h;
  28         static char buf[256];
  29         unsigned int len;
  30         XGCValues gcv;
  31         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  32
  33         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  34         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  35
  36         if(!text)
  37                 return;
  38
  39         w = 0;
  40         len = strlen(text);
  41         if(len >= sizeof(buf))
  42                 len = sizeof(buf) - 1;
  43         memcpy(buf, text, len);
  44         buf[len] = 0;
  45
  46         h = dc.font.ascent + dc.font.descent;
  47         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  48         x = dc.x + (h / 2);
  49
  50         /* shorten text if necessary */
  51         while(len && (w = textnw(buf, len)) > dc.w - h)
  52                 buf[--len] = 0;
  53
  54         if(w > dc.w)
  55                 return; /* too long */
  56
  57         gcv.foreground = invert ? dc.bg : dc.fg;
  58         gcv.background = invert ? dc.fg : dc.bg;
  59         if(dc.font.set) {
  60                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  61                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
  62                                 x, y, buf, len);
  63         }
  64         else {
  65                 gcv.font = dc.font.xfont->fid;
  66                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  67                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  68         }
  69 }
  70
  71 /* extern */
  72
  73 void
  74 drawall()
  75 {
  76         Client *c;
  77
  78         for(c = clients; c; c = getnext(c->next))
  79                 drawtitle(c);
  80         drawstatus();
  81 }
  82
  83 void
  84 drawstatus()
  85 {
  86         int i, x;
  87         Bool istile = arrange == dotile;
  88
  89         dc.x = dc.y = 0;
  90         dc.w = bw;
  91         drawtext(NULL, !istile);
  92
  93         dc.w = 0;
  94         for(i = 0; i < ntags; i++) {
  95                 dc.x += dc.w;
  96                 dc.w = textw(tags[i]);
  97                 if(istile)
  98                         drawtext(tags[i], (i == tsel));
  99                 else
 100                         drawtext(tags[i], (i != tsel));
 101         }
 102         x = dc.x + dc.w;
 103         dc.w = textw(stext);
 104         dc.x = bx + bw - dc.w;
 105         drawtext(stext, !istile);
 106         if(sel && ((dc.w = dc.x - x) >= bh)) {
 107                 dc.x = x;
 108                 drawtext(sel->name, istile);
 109         }
 110         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 111         XSync(dpy, False);
 112 }
 113
 114 void
 115 drawtitle(Client *c)
 116 {
 117         int i;
 118         Bool istile = arrange == dotile;
 119
 120         if(c == sel) {
 121                 drawstatus();
 122                 XUnmapWindow(dpy, c->title);
 123                 XSetWindowBorder(dpy, c->win, dc.fg);
 124                 return;
 125         }
 126
 127         XSetWindowBorder(dpy, c->win, dc.bg);
 128         XMapWindow(dpy, c->title);
 129
 130         dc.x = dc.y = 0;
 131
 132         dc.w = 0;
 133         for(i = 0; i < ntags; i++) {
 134                 if(c->tags[i]) {
 135                         dc.x += dc.w;
 136                         dc.w = textw(tags[i]);
 137                         drawtext(tags[i], !istile);
 138                 }
 139         }
 140         dc.x += dc.w;
 141         dc.w = textw(c->name);
 142         drawtext(c->name, !istile);
 143         XCopyArea(dpy, dc.drawable, c->title, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 144         XSync(dpy, False);
 145 }
 146
 147 unsigned long
 148 getcolor(const char *colstr)
 149 {
 150         Colormap cmap = DefaultColormap(dpy, screen);
 151         XColor color;
 152
 153         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 154         return color.pixel;
 155 }
 156
 157 void
 158 setfont(const char *fontstr)
 159 {
 160         char **missing, *def;
 161         int i, n;
 162
 163         missing = NULL;
 164         setlocale(LC_ALL, "");
 165         if(dc.font.set)
 166                 XFreeFontSet(dpy, dc.font.set);
 167         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 168         if(missing) {
 169                 while(n--)
 170                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 171                 XFreeStringList(missing);
 172                 if(dc.font.set) {
 173                         XFreeFontSet(dpy, dc.font.set);
 174                         dc.font.set = NULL;
 175                 }
 176         }
 177         if(dc.font.set) {
 178                 XFontSetExtents *font_extents;
 179                 XFontStruct **xfonts;
 180                 char **font_names;
 181
 182                 dc.font.ascent = dc.font.descent = 0;
 183                 font_extents = XExtentsOfFontSet(dc.font.set);
 184                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 185                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 186                         if(dc.font.ascent < (*xfonts)->ascent)
 187                                 dc.font.ascent = (*xfonts)->ascent;
 188                         if(dc.font.descent < (*xfonts)->descent)
 189                                 dc.font.descent = (*xfonts)->descent;
 190                         xfonts++;
 191                 }
 192         }
 193         else {
 194                 if(dc.font.xfont)
 195                         XFreeFont(dpy, dc.font.xfont);
 196                 dc.font.xfont = NULL;
 197                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 198                 if (!dc.font.xfont)
 199                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 200                 if (!dc.font.xfont)
 201                         eprint("error, cannot init 'fixed' font\n");
 202                 dc.font.ascent = dc.font.xfont->ascent;
 203                 dc.font.descent = dc.font.xfont->descent;
 204         }
 205         dc.font.height = dc.font.ascent + dc.font.descent;
 206 }
 207
 208 unsigned int
 209 textw(const char *text)
 210 {
 211         return textnw(text, strlen(text)) + dc.font.height;
 212 }