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 filledsquare, Bool emptysquare) {
  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         XPoint pt[5];
  40
  41         XSetForeground(dpy, dc.gc, col[ColBG]);
  42         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  43         if(!text)
  44                 return;
  45         w = 0;
  46         olen = len = strlen(text);
  47         if(len >= sizeof buf)
  48                 len = sizeof buf - 1;
  49         memcpy(buf, text, len);
  50         buf[len] = 0;
  51         h = dc.font.ascent + dc.font.descent;
  52         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  53         x = dc.x + (h / 2);
  54         /* shorten text if necessary */
  55         while(len && (w = textnw(buf, len)) > dc.w - h)
  56                 buf[--len] = 0;
  57         if(len < olen) {
  58                 if(len > 1)
  59                         buf[len - 1] = '.';
  60                 if(len > 2)
  61                         buf[len - 2] = '.';
  62                 if(len > 3)
  63                         buf[len - 3] = '.';
  64         }
  65         if(w > dc.w)
  66                 return; /* too long */
  67         gcv.foreground = col[ColFG];
  68         if(dc.font.set) {
  69                 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  70                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  71         }
  72         else {
  73                 gcv.font = dc.font.xfont->fid;
  74                 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
  75                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  76         }
  77         x = (h + 2) / 4;
  78         if(filledsquare) {
  79                 r.x = dc.x + 1;
  80                 r.y = dc.y + 1;
  81                 r.width = r.height = x + 1;
  82                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  83         }
  84         else if(emptysquare) {
  85                 pt[0].x = dc.x + 1;
  86                 pt[0].y = dc.y + 1;
  87                 pt[1].x = x;
  88                 pt[1].y = 0;
  89                 pt[2].x = 0;
  90                 pt[2].y = x;
  91                 pt[3].x = -x;
  92                 pt[3].y = 0;
  93                 pt[4].x = 0;
  94                 pt[4].y = -x;
  95                 XDrawLines(dpy, dc.drawable, dc.gc, pt, 5, CoordModePrevious);
  96         }
  97 }
  98
  99 /* extern */
 100
 101 void
 102 drawall(void) {
 103         Client *c;
 104
 105         for(c = clients; c; c = getnext(c->next))
 106                 drawtitle(c);
 107         drawstatus();
 108 }
 109
 110 void
 111 drawstatus(void) {
 112         int i, x;
 113
 114         dc.x = dc.y = 0;
 115         for(i = 0; i < ntags; i++) {
 116                 dc.w = textw(tags[i]);
 117                 if(seltag[i])
 118                         drawtext(tags[i], dc.sel, sel && sel->tags[i], isoccupied(i));
 119                 else
 120                         drawtext(tags[i], dc.norm, sel && sel->tags[i], isoccupied(i));
 121                 dc.x += dc.w;
 122         }
 123         dc.w = bmw;
 124         drawtext(arrange == dofloat ?  FLOATSYMBOL : TILESYMBOL, dc.status, False, False);
 125         x = dc.x + dc.w;
 126         dc.w = textw(stext);
 127         dc.x = bw - dc.w;
 128         if(dc.x < x) {
 129                 dc.x = x;
 130                 dc.w = bw - x;
 131         }
 132         drawtext(stext, dc.status, False, False);
 133         if((dc.w = dc.x - x) > bh) {
 134                 dc.x = x;
 135                 drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm, False, False);
 136         }
 137         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 138         XSync(dpy, False);
 139 }
 140
 141 void
 142 drawtitle(Client *c) {
 143         if(c == sel && issel) {
 144                 drawstatus();
 145                 XUnmapWindow(dpy, c->twin);
 146                 XSetWindowBorder(dpy, c->win, dc.sel[ColBG]);
 147                 return;
 148         }
 149         XSetWindowBorder(dpy, c->win, dc.norm[ColBG]);
 150         XMapWindow(dpy, c->twin);
 151         dc.x = dc.y = 0;
 152         dc.w = c->tw;
 153         drawtext(c->name, dc.norm, False,False);
 154         XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 155         XSync(dpy, False);
 156 }
 157
 158 unsigned long
 159 getcolor(const char *colstr) {
 160         Colormap cmap = DefaultColormap(dpy, screen);
 161         XColor color;
 162
 163         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 164                 eprint("error, cannot allocate color '%s'\n", colstr);
 165         return color.pixel;
 166 }
 167
 168 void
 169 setfont(const char *fontstr) {
 170         char *def, *lc, **missing;
 171         int i, n;
 172
 173         lc = setlocale(LC_CTYPE, NULL);
 174         setlocale(LC_CTYPE, "UTF-8");
 175         missing = NULL;
 176         if(dc.font.set)
 177                 XFreeFontSet(dpy, dc.font.set);
 178         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 179         setlocale(LC_CTYPE, lc);
 180         if(missing) {
 181                 while(n--)
 182                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 183                 XFreeStringList(missing);
 184         }
 185         if(dc.font.set) {
 186                 XFontSetExtents *font_extents;
 187                 XFontStruct **xfonts;
 188                 char **font_names;
 189                 dc.font.ascent = dc.font.descent = 0;
 190                 font_extents = XExtentsOfFontSet(dc.font.set);
 191                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 192                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 193                         if(dc.font.ascent < (*xfonts)->ascent)
 194                                 dc.font.ascent = (*xfonts)->ascent;
 195                         if(dc.font.descent < (*xfonts)->descent)
 196                                 dc.font.descent = (*xfonts)->descent;
 197                         xfonts++;
 198                 }
 199         }
 200         else {
 201                 if(dc.font.xfont)
 202                         XFreeFont(dpy, dc.font.xfont);
 203                 dc.font.xfont = NULL;
 204                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 205                 if (!dc.font.xfont)
 206                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 207                 if (!dc.font.xfont)
 208                         eprint("error, cannot init 'fixed' font\n");
 209                 dc.font.ascent = dc.font.xfont->ascent;
 210                 dc.font.descent = dc.font.xfont->descent;
 211         }
 212         dc.font.height = dc.font.ascent + dc.font.descent;
 213 }
 214
 215 unsigned int
 216 textw(const char *text) {
 217         return textnw(text, strlen(text)) + dc.font.height;
 218 }