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