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 drawborder()
  26 {
  27         XPoint points[5];
  28         points[0].x = dc.x;
  29         points[0].y = dc.y;
  30         points[1].x = dc.w - 1;
  31         points[1].y = 0;
  32         points[2].x = 0;
  33         points[2].y = dc.h - 1;
  34         points[3].x = -(dc.w - 1);
  35         points[3].y = 0;
  36         points[4].x = 0;
  37         points[4].y = -(dc.h - 1);
  38         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
  39 }
  40
  41 static void
  42 drawtext(const char *text, Bool invert, Bool highlight)
  43 {
  44         int x, y, w, h;
  45         static char buf[256];
  46         unsigned int len, olen;
  47         DC tmp;
  48         XGCValues gcv;
  49         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  50
  51         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  52         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  53         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  54         XSetForeground(dpy, dc.gc, dc.border);
  55         drawborder();
  56
  57         if(!text)
  58                 return;
  59
  60         w = 0;
  61         olen = len = strlen(text);
  62         if(len >= sizeof(buf))
  63                 len = sizeof(buf) - 1;
  64         memcpy(buf, text, len);
  65         buf[len] = 0;
  66
  67         h = dc.font.ascent + dc.font.descent;
  68         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  69         x = dc.x + (h / 2);
  70
  71         /* shorten text if necessary */
  72         while(len && (w = textnw(buf, len)) > dc.w - h)
  73                 buf[--len] = 0;
  74         if(len < olen) {
  75                 if(len > 1)
  76                         buf[len - 1] = '.';
  77                 if(len > 2)
  78                         buf[len - 2] = '.';
  79                 if(len > 3)
  80                         buf[len - 3] = '.';
  81         }
  82
  83         if(w > dc.w)
  84                 return; /* too long */
  85         gcv.foreground = invert ? dc.bg : dc.fg;
  86         gcv.background = invert ? dc.fg : dc.bg;
  87         if(dc.font.set) {
  88                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
  89                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  90         }
  91         else {
  92                 gcv.font = dc.font.xfont->fid;
  93                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
  94                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  95         }
  96         if(highlight) {
  97                 tmp = dc;
  98                 dc.x += 2;
  99                 dc.y += 2;
 100                 dc.w -= 4;
 101                 dc.h -= 4;
 102                 drawborder();
 103                 dc = tmp;
 104         }
 105 }
 106
 107 /* extern */
 108
 109 void
 110 drawall()
 111 {
 112         Client *c;
 113
 114         for(c = clients; c; c = getnext(c->next))
 115                 drawtitle(c);
 116         drawstatus();
 117 }
 118
 119 void
 120 drawstatus()
 121 {
 122         int i, x;
 123         Bool istile = arrange == dotile;
 124
 125         dc.x = dc.y = 0;
 126         dc.w = bw;
 127         drawtext(NULL, !istile, False);
 128
 129         dc.w = 0;
 130         for(i = 0; i < ntags; i++) {
 131                 dc.x += dc.w;
 132                 dc.w = textw(tags[i]);
 133                 if(istile)
 134                         drawtext(tags[i], seltag[i], sel && sel->tags[i]);
 135                 else
 136                         drawtext(tags[i], !seltag[i], sel && sel->tags[i]);
 137         }
 138         x = dc.x + dc.w;
 139         dc.w = textw(stext);
 140         dc.x = bx + bw - dc.w;
 141         if(dc.x < x) {
 142                 dc.x = x;
 143                 dc.w = bw - x;
 144         }
 145         drawtext(stext, !istile, False);
 146
 147         if(sel && ((dc.w = dc.x - x) > bh)) {
 148                 dc.x = x;
 149                 drawtext(sel->name, istile, False);
 150         }
 151         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 152         XSync(dpy, False);
 153 }
 154
 155 void
 156 drawtitle(Client *c)
 157 {
 158         int i;
 159         Bool istile = arrange == dotile;
 160
 161         if(c == sel && issel) {
 162                 drawstatus();
 163                 XUnmapWindow(dpy, c->twin);
 164                 XSetWindowBorder(dpy, c->win, dc.fg);
 165                 return;
 166         }
 167
 168         XSetWindowBorder(dpy, c->win, dc.bg);
 169         XMapWindow(dpy, c->twin);
 170         dc.x = dc.y = 0;
 171         dc.w = c->tw;
 172         drawtext(c->name, !istile, False);
 173         XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 174         XSync(dpy, False);
 175 }
 176
 177 unsigned long
 178 getcolor(const char *colstr)
 179 {
 180         Colormap cmap = DefaultColormap(dpy, screen);
 181         XColor color;
 182
 183         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 184         return color.pixel;
 185 }
 186
 187 void
 188 setfont(const char *fontstr)
 189 {
 190         char **missing, *def;
 191         int i, n;
 192
 193         missing = NULL;
 194         setlocale(LC_ALL, "");
 195         if(dc.font.set)
 196                 XFreeFontSet(dpy, dc.font.set);
 197         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 198         if(missing) {
 199                 while(n--)
 200                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 201                 XFreeStringList(missing);
 202                 if(dc.font.set) {
 203                         XFreeFontSet(dpy, dc.font.set);
 204                         dc.font.set = NULL;
 205                 }
 206         }
 207         if(dc.font.set) {
 208                 XFontSetExtents *font_extents;
 209                 XFontStruct **xfonts;
 210                 char **font_names;
 211
 212                 dc.font.ascent = dc.font.descent = 0;
 213                 font_extents = XExtentsOfFontSet(dc.font.set);
 214                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 215                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 216                         if(dc.font.ascent < (*xfonts)->ascent)
 217                                 dc.font.ascent = (*xfonts)->ascent;
 218                         if(dc.font.descent < (*xfonts)->descent)
 219                                 dc.font.descent = (*xfonts)->descent;
 220                         xfonts++;
 221                 }
 222         }
 223         else {
 224                 if(dc.font.xfont)
 225                         XFreeFont(dpy, dc.font.xfont);
 226                 dc.font.xfont = NULL;
 227                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 228                 if (!dc.font.xfont)
 229                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 230                 if (!dc.font.xfont)
 231                         eprint("error, cannot init 'fixed' font\n");
 232                 dc.font.ascent = dc.font.xfont->ascent;
 233                 dc.font.descent = dc.font.xfont->descent;
 234         }
 235         dc.font.height = dc.font.ascent + dc.font.descent;
 236 }
 237
 238 unsigned int
 239 textw(const char *text)
 240 {
 241         return textnw(text, strlen(text)) + dc.font.height;
 242 }