draw.c

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