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