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, Bool highlight)
  26 {
  27         int x, y, w, h;
  28         static char buf[256];
  29         unsigned int len, olen;
  30         XGCValues gcv;
  31         XPoint points[5];
  32         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  33
  34         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  35         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  36         points[0].x = dc.x;
  37         points[0].y = dc.y;
  38         points[1].x = dc.w - 1;
  39         points[1].y = 0;
  40         points[2].x = 0;
  41         points[2].y = dc.h - 1;
  42         points[3].x = -(dc.w - 1);
  43         points[3].y = 0;
  44         points[4].x = 0;
  45         points[4].y = -(dc.h - 1);
  46         XSetForeground(dpy, dc.gc, dc.border);
  47         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
  48
  49         if(!text)
  50                 return;
  51
  52         w = 0;
  53         olen = len = strlen(text);
  54         if(len >= sizeof(buf))
  55                 len = sizeof(buf) - 1;
  56         memcpy(buf, text, len);
  57         buf[len] = 0;
  58
  59         h = dc.font.ascent + dc.font.descent;
  60         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  61         x = dc.x + (h / 2);
  62
  63         /* shorten text if necessary */
  64         while(len && (w = textnw(buf, len)) > dc.w - h)
  65                 buf[--len] = 0;
  66         if(len < olen) {
  67                 if(len > 1)
  68                         buf[len - 1] = '.';
  69                 if(len > 2)
  70                         buf[len - 2] = '.';
  71                 if(len > 3)
  72                         buf[len - 3] = '.';
  73         }
  74
  75         if(w > dc.w)
  76                 return; /* too long */
  77         gcv.foreground = invert ? dc.bg : dc.fg;
  78         gcv.background = invert ? dc.fg : dc.bg;
  79         if(dc.font.set) {
  80                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  81                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  82         }
  83         else {
  84                 gcv.font = dc.font.xfont->fid;
  85                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  86                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  87         }
  88         if(highlight) {
  89                 r.x = dc.x + 2;
  90                 r.y = dc.y + 2;
  91                 r.width = r.height = 3;
  92                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  93         }
  94 }
  95
  96 /* extern */
  97
  98 void
  99 drawall()
 100 {
 101         Client *c;
 102
 103         for(c = clients; c; c = getnext(c->next))
 104                 drawtitle(c);
 105         drawstatus();
 106 }
 107
 108 void
 109 drawstatus()
 110 {
 111         int i, x;
 112         Bool istile = arrange == dotile;
 113
 114         dc.x = dc.y = 0;
 115         dc.w = bw;
 116         drawtext(NULL, !istile, False);
 117
 118         dc.w = 0;
 119         for(i = 0; i < ntags; i++) {
 120                 dc.x += dc.w;
 121                 dc.w = textw(tags[i]);
 122                 if(istile)
 123                         drawtext(tags[i], seltag[i], sel && sel->tags[i]);
 124                 else
 125                         drawtext(tags[i], !seltag[i], sel && sel->tags[i]);
 126         }
 127         x = dc.x + dc.w;
 128         dc.w = textw(stext);
 129         dc.x = bx + bw - dc.w;
 130         if(dc.x < x) {
 131                 dc.x = x;
 132                 dc.w = bw - x;
 133         }
 134         drawtext(stext, !istile, False);
 135
 136         if(sel && ((dc.w = dc.x - x) > bh)) {
 137                 dc.x = x;
 138                 drawtext(sel->name, istile, False);
 139         }
 140         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 141         XSync(dpy, False);
 142 }
 143
 144 void
 145 drawtitle(Client *c)
 146 {
 147         int i;
 148         Bool istile = arrange == dotile;
 149
 150         if(c == sel && issel) {
 151                 drawstatus();
 152                 XUnmapWindow(dpy, c->twin);
 153                 XSetWindowBorder(dpy, c->win, dc.fg);
 154                 return;
 155         }
 156
 157         XSetWindowBorder(dpy, c->win, dc.bg);
 158         XMapWindow(dpy, c->twin);
 159         dc.x = dc.y = 0;
 160         dc.w = c->tw;
 161         drawtext(c->name, !istile, False);
 162         XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 163         XSync(dpy, False);
 164 }
 165
 166 unsigned long
 167 getcolor(const char *colstr)
 168 {
 169         Colormap cmap = DefaultColormap(dpy, screen);
 170         XColor color;
 171
 172         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 173         return color.pixel;
 174 }
 175
 176 void
 177 setfont(const char *fontstr)
 178 {
 179         char **missing, *def;
 180         int i, n;
 181
 182         missing = NULL;
 183         setlocale(LC_ALL, "");
 184         if(dc.font.set)
 185                 XFreeFontSet(dpy, dc.font.set);
 186         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 187         if(missing) {
 188                 while(n--)
 189                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 190                 XFreeStringList(missing);
 191                 if(dc.font.set) {
 192                         XFreeFontSet(dpy, dc.font.set);
 193                         dc.font.set = NULL;
 194                 }
 195         }
 196         if(dc.font.set) {
 197                 XFontSetExtents *font_extents;
 198                 XFontStruct **xfonts;
 199                 char **font_names;
 200
 201                 dc.font.ascent = dc.font.descent = 0;
 202                 font_extents = XExtentsOfFontSet(dc.font.set);
 203                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 204                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 205                         if(dc.font.ascent < (*xfonts)->ascent)
 206                                 dc.font.ascent = (*xfonts)->ascent;
 207                         if(dc.font.descent < (*xfonts)->descent)
 208                                 dc.font.descent = (*xfonts)->descent;
 209                         xfonts++;
 210                 }
 211         }
 212         else {
 213                 if(dc.font.xfont)
 214                         XFreeFont(dpy, dc.font.xfont);
 215                 dc.font.xfont = NULL;
 216                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 217                 if (!dc.font.xfont)
 218                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 219                 if (!dc.font.xfont)
 220                         eprint("error, cannot init 'fixed' font\n");
 221                 dc.font.ascent = dc.font.xfont->ascent;
 222                 dc.font.descent = dc.font.xfont->descent;
 223         }
 224         dc.font.height = dc.font.ascent + dc.font.descent;
 225 }
 226
 227 unsigned int
 228 textw(const char *text)
 229 {
 230         return textnw(text, strlen(text)) + dc.font.height;
 231 }