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         XRectangle r;
  15
  16         if(dc.font.set) {
  17                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
  18                 return r.width;
  19         }
  20         return XTextWidth(dc.font.xfont, text, len);
  21 }
  22
  23 static void
  24 drawtext(const char *text, unsigned long col[ColLast], Bool highlight) {
  25         int x, y, w, h;
  26         static char buf[256];
  27         unsigned int len, olen;
  28         XGCValues gcv;
  29         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  30
  31         XSetForeground(dpy, dc.gc, col[ColBG]);
  32         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  33
  34         if(!text)
  35                 return;
  36
  37         w = 0;
  38         olen = len = strlen(text);
  39         if(len >= sizeof(buf))
  40                 len = sizeof(buf) - 1;
  41         memcpy(buf, text, len);
  42         buf[len] = 0;
  43
  44         h = dc.font.ascent + dc.font.descent;
  45         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
  46         x = dc.x + (h / 2);
  47
  48         /* shorten text if necessary */
  49         while(len && (w = textnw(buf, len)) > dc.w - h)
  50                 buf[--len] = 0;
  51         if(len < olen) {
  52                 if(len > 1)
  53                         buf[len - 1] = '.';
  54                 if(len > 2)
  55                         buf[len - 2] = '.';
  56                 if(len > 3)
  57                         buf[len - 3] = '.';
  58         }
  59
  60         if(w > dc.w)
  61                 return; /* too long */
  62         gcv.foreground = col[ColFG];
  63         if(dc.font.set) {
  64                 XChangeGC(dpy, dc.gc, GCForeground, &gcv);
  65                 XmbDrawString(dpy, dc.drawable, dc.font.set, dc.gc, x, y, buf, len);
  66         }
  67         else {
  68                 gcv.font = dc.font.xfont->fid;
  69                 XChangeGC(dpy, dc.gc, GCForeground | GCFont, &gcv);
  70                 XDrawString(dpy, dc.drawable, dc.gc, x, y, buf, len);
  71         }
  72         if(highlight) {
  73                 r.x = dc.x + 2;
  74                 r.y = dc.y + 2;
  75                 r.width = r.height = (h + 2) / 4;
  76                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  77         }
  78 }
  79
  80 /* extern */
  81
  82 void
  83 drawall(void) {
  84         Client *c;
  85
  86         for(c = clients; c; c = getnext(c->next))
  87                 drawtitle(c);
  88         drawstatus();
  89 }
  90
  91 void
  92 drawstatus(void) {
  93         int i, x;
  94
  95         dc.x = dc.y = 0;
  96
  97         for(i = 0; i < ntags; i++) {
  98                 dc.w = textw(tags[i]);
  99                 if(seltag[i])
 100                         drawtext(tags[i], dc.sel, sel && sel->tags[i]);
 101                 else
 102                         drawtext(tags[i], dc.norm, sel && sel->tags[i]);
 103                 dc.x += dc.w;
 104         }
 105
 106         dc.w = bmw;
 107         drawtext(arrange == dofloat ?  FLOATSYMBOL : TILESYMBOL, dc.status, False);
 108
 109         x = dc.x + dc.w;
 110         dc.w = textw(stext);
 111         dc.x = bx + bw - dc.w;
 112         if(dc.x < x) {
 113                 dc.x = x;
 114                 dc.w = bw - x;
 115         }
 116         drawtext(stext, dc.status, False);
 117
 118         if((dc.w = dc.x - x) > bh) {
 119                 dc.x = x;
 120                 if(sel)
 121                         drawtext(sel->name, dc.sel, False);
 122                 else
 123                         drawtext(NULL, dc.norm, False);
 124         }
 125         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 126         XSync(dpy, False);
 127 }
 128
 129 void
 130 drawtitle(Client *c) {
 131         if(c == sel && issel) {
 132                 drawstatus();
 133                 XUnmapWindow(dpy, c->twin);
 134                 XSetWindowBorder(dpy, c->win, dc.sel[ColBG]);
 135                 return;
 136         }
 137
 138         XSetWindowBorder(dpy, c->win, dc.norm[ColBG]);
 139         XMapWindow(dpy, c->twin);
 140         dc.x = dc.y = 0;
 141         dc.w = c->tw;
 142         drawtext(c->name, dc.norm, False);
 143         XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 144         XSync(dpy, False);
 145 }
 146
 147 unsigned long
 148 getcolor(const char *colstr) {
 149         Colormap cmap = DefaultColormap(dpy, screen);
 150         XColor color;
 151
 152         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 153                 eprint("error, cannot allocate color '%s'\n", colstr);
 154         return color.pixel;
 155 }
 156
 157 void
 158 setfont(const char *fontstr) {
 159         char **missing, *def;
 160         int i, n;
 161
 162         missing = NULL;
 163         setlocale(LC_ALL, "");
 164         if(dc.font.set)
 165                 XFreeFontSet(dpy, dc.font.set);
 166         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 167         if(missing) {
 168                 while(n--)
 169                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 170                 XFreeStringList(missing);
 171                 if(dc.font.set) {
 172                         XFreeFontSet(dpy, dc.font.set);
 173                         dc.font.set = NULL;
 174                 }
 175         }
 176         if(dc.font.set) {
 177                 XFontSetExtents *font_extents;
 178                 XFontStruct **xfonts;
 179                 char **font_names;
 180
 181                 dc.font.ascent = dc.font.descent = 0;
 182                 font_extents = XExtentsOfFontSet(dc.font.set);
 183                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 184                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 185                         if(dc.font.ascent < (*xfonts)->ascent)
 186                                 dc.font.ascent = (*xfonts)->ascent;
 187                         if(dc.font.descent < (*xfonts)->descent)
 188                                 dc.font.descent = (*xfonts)->descent;
 189                         xfonts++;
 190                 }
 191         }
 192         else {
 193                 if(dc.font.xfont)
 194                         XFreeFont(dpy, dc.font.xfont);
 195                 dc.font.xfont = NULL;
 196                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 197                 if (!dc.font.xfont)
 198                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 199                 if (!dc.font.xfont)
 200                         eprint("error, cannot init 'fixed' font\n");
 201                 dc.font.ascent = dc.font.xfont->ascent;
 202                 dc.font.descent = dc.font.xfont->descent;
 203         }
 204         dc.font.height = dc.font.ascent + dc.font.descent;
 205 }
 206
 207 unsigned int
 208 textw(const char *text) {
 209         return textnw(text, strlen(text)) + dc.font.height;
 210 }