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 border) {
  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[3];
  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         if(dot) {
  78                 r.x = dc.x + 2;
  79                 r.y = dc.y + 2;
  80                 r.width = r.height = (h + 2) / 4;
  81                 XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  82         }
  83         if(border) {
  84                 pt[0].x = dc.x;
  85                 pt[0].y = dc.y + dc.h;
  86                 pt[1].x = 0;
  87                 pt[1].y = -dc.h;
  88                 pt[2].x = dc.w;
  89                 pt[2].y = 0;
  90                 XDrawLines(dpy, dc.drawable, dc.gc, pt, 3, CoordModePrevious);
  91         }
  92 }
  93
  94 /* extern */
  95
  96 void
  97 drawall(void) {
  98         Client *c;
  99
 100         for(c = clients; c; c = getnext(c->next))
 101                 drawtitle(c);
 102         drawstatus();
 103 }
 104
 105 void
 106 drawstatus(void) {
 107         int i, x;
 108
 109         dc.x = dc.y = 0;
 110         for(i = 0; i < ntags; i++) {
 111                 dc.w = textw(tags[i]);
 112                 if(seltag[i])
 113                         drawtext(tags[i], dc.sel, sel && sel->tags[i], isoccupied(i));
 114                 else
 115                         drawtext(tags[i], dc.norm, sel && sel->tags[i], isoccupied(i));
 116                 dc.x += dc.w;
 117         }
 118         dc.w = bmw;
 119         drawtext(arrange == dofloat ?  FLOATSYMBOL : TILESYMBOL, dc.status, False, False);
 120         x = dc.x + dc.w;
 121         dc.w = textw(stext);
 122         dc.x = bw - dc.w;
 123         if(dc.x < x) {
 124                 dc.x = x;
 125                 dc.w = bw - x;
 126         }
 127         drawtext(stext, dc.status, False, False);
 128         if((dc.w = dc.x - x) > bh) {
 129                 dc.x = x;
 130                 drawtext(sel ? sel->name : NULL, sel ? dc.sel : dc.norm, False, False);
 131         }
 132         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
 133         XSync(dpy, False);
 134 }
 135
 136 void
 137 drawtitle(Client *c) {
 138         if(c == sel && issel) {
 139                 drawstatus();
 140                 XUnmapWindow(dpy, c->twin);
 141                 XSetWindowBorder(dpy, c->win, dc.sel[ColBG]);
 142                 return;
 143         }
 144         XSetWindowBorder(dpy, c->win, dc.norm[ColBG]);
 145         XMapWindow(dpy, c->twin);
 146         dc.x = dc.y = 0;
 147         dc.w = c->tw;
 148         drawtext(c->name, dc.norm, False,False);
 149         XCopyArea(dpy, dc.drawable, c->twin, dc.gc, 0, 0, c->tw, c->th, 0, 0);
 150         XSync(dpy, False);
 151 }
 152
 153 unsigned long
 154 getcolor(const char *colstr) {
 155         Colormap cmap = DefaultColormap(dpy, screen);
 156         XColor color;
 157
 158         if(!XAllocNamedColor(dpy, cmap, colstr, &color, &color))
 159                 eprint("error, cannot allocate color '%s'\n", colstr);
 160         return color.pixel;
 161 }
 162
 163 void
 164 setfont(const char *fontstr) {
 165         char **missing, *def;
 166         int i, n;
 167
 168         missing = NULL;
 169         setlocale(LC_ALL, "");
 170         if(dc.font.set)
 171                 XFreeFontSet(dpy, dc.font.set);
 172         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 173         if(missing) {
 174                 while(n--)
 175                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 176                 XFreeStringList(missing);
 177                 if(dc.font.set) {
 178                         XFreeFontSet(dpy, dc.font.set);
 179                         dc.font.set = NULL;
 180                 }
 181         }
 182         if(dc.font.set) {
 183                 XFontSetExtents *font_extents;
 184                 XFontStruct **xfonts;
 185                 char **font_names;
 186                 dc.font.ascent = dc.font.descent = 0;
 187                 font_extents = XExtentsOfFontSet(dc.font.set);
 188                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 189                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 190                         if(dc.font.ascent < (*xfonts)->ascent)
 191                                 dc.font.ascent = (*xfonts)->ascent;
 192                         if(dc.font.descent < (*xfonts)->descent)
 193                                 dc.font.descent = (*xfonts)->descent;
 194                         xfonts++;
 195                 }
 196         }
 197         else {
 198                 if(dc.font.xfont)
 199                         XFreeFont(dpy, dc.font.xfont);
 200                 dc.font.xfont = NULL;
 201                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 202                 if (!dc.font.xfont)
 203                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 204                 if (!dc.font.xfont)
 205                         eprint("error, cannot init 'fixed' font\n");
 206                 dc.font.ascent = dc.font.xfont->ascent;
 207                 dc.font.descent = dc.font.xfont->descent;
 208         }
 209         dc.font.height = dc.font.ascent + dc.font.descent;
 210 }
 211
 212 unsigned int
 213 textw(const char *text) {
 214         return textnw(text, strlen(text)) + dc.font.height;
 215 }