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
   6 #include <stdio.h>
   7 #include <string.h>
   8
   9 #include <X11/Xlocale.h>
  10
  11 #include "dwm.h"
  12
  13 void
  14 drawall()
  15 {
  16         Client *c;
  17
  18         for(c = clients; c; c = getnext(c->next))
  19                 drawtitle(c);
  20         drawstatus();
  21 }
  22
  23 void
  24 drawstatus()
  25 {
  26         int i;
  27         Bool istile = arrange == dotile;
  28
  29         dc.x = dc.y = 0;
  30         dc.w = bw;
  31         drawtext(NULL, !istile, False);
  32
  33         dc.w = 0;
  34         for(i = 0; i < TLast; i++) {
  35                 dc.x += dc.w;
  36                 dc.w = textw(tags[i]);
  37                 if(istile)
  38                         drawtext(tags[i], (i == tsel), True);
  39                 else
  40                         drawtext(tags[i], (i != tsel), True);
  41         }
  42         if(sel) {
  43                 dc.x += dc.w;
  44                 dc.w = textw(sel->name);
  45                 drawtext(sel->name, istile, True);
  46         }
  47         dc.w = textw(stext);
  48         dc.x = bx + bw - dc.w;
  49         drawtext(stext, !istile, False);
  50
  51         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
  52         XFlush(dpy);
  53 }
  54
  55 void
  56 drawtitle(Client *c)
  57 {
  58         int i;
  59         Bool istile = arrange == dotile;
  60
  61         if(c == sel) {
  62                 drawstatus();
  63                 XUnmapWindow(dpy, c->title);
  64                 XSetWindowBorder(dpy, c->win, dc.fg);
  65                 return;
  66         }
  67
  68         XSetWindowBorder(dpy, c->win, dc.bg);
  69         XMapWindow(dpy, c->title);
  70
  71         dc.x = dc.y = 0;
  72
  73         dc.w = 0;
  74         for(i = 0; i < TLast; i++) {
  75                 if(c->tags[i]) {
  76                         dc.x += dc.w;
  77                         dc.w = textw(c->tags[i]);
  78                         drawtext(c->tags[i], !istile, True);
  79                 }
  80         }
  81         dc.x += dc.w;
  82         dc.w = textw(c->name);
  83         drawtext(c->name, !istile, True);
  84         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
  85                         0, 0, c->tw, c->th, 0, 0);
  86         XFlush(dpy);
  87 }
  88
  89 static void
  90 drawborder(void)
  91 {
  92         XPoint points[5];
  93         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  94         XSetForeground(dpy, dc.gc, dc.border);
  95         points[0].x = dc.x;
  96         points[0].y = dc.y;
  97         points[1].x = dc.w - 1;
  98         points[1].y = 0;
  99         points[2].x = 0;
 100         points[2].y = dc.h - 1;
 101         points[3].x = -(dc.w - 1);
 102         points[3].y = 0;
 103         points[4].x = 0;
 104         points[4].y = -(dc.h - 1);
 105         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
 106 }
 107
 108 void
 109 drawtext(const char *text, Bool invert, Bool border)
 110 {
 111         int x, y, w, h;
 112         unsigned int len;
 113         static char buf[256];
 114         XGCValues gcv;
 115         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 116
 117         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
 118         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
 119
 120         w = 0;
 121         if(border)
 122                 drawborder();
 123
 124         if(!text)
 125                 return;
 126
 127         len = strlen(text);
 128         if(len >= sizeof(buf))
 129                 len = sizeof(buf) - 1;
 130         memcpy(buf, text, len);
 131         buf[len] = 0;
 132
 133         h = dc.font.ascent + dc.font.descent;
 134         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 135         x = dc.x + (h / 2);
 136
 137         /* shorten text if necessary */
 138         while(len && (w = textnw(buf, len)) > dc.w - h)
 139                 buf[--len] = 0;
 140
 141         if(w > dc.w)
 142                 return; /* too long */
 143
 144         gcv.foreground = invert ? dc.bg : dc.fg;
 145         gcv.background = invert ? dc.fg : dc.bg;
 146         if(dc.font.set) {
 147                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
 148                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
 149                                 x, y, buf, len);
 150         }
 151         else {
 152                 gcv.font = dc.font.xfont->fid;
 153                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
 154                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 155         }
 156 }
 157
 158 unsigned long
 159 getcolor(const char *colstr)
 160 {
 161         XColor color;
 162         Colormap cmap = DefaultColormap(dpy, screen);
 163
 164         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 165         return color.pixel;
 166 }
 167
 168 unsigned int
 169 textnw(char *text, unsigned int len)
 170 {
 171         XRectangle r;
 172         if(dc.font.set) {
 173                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 174                 return r.width;
 175         }
 176         return XTextWidth(dc.font.xfont, text, len);
 177 }
 178
 179 unsigned int
 180 textw(char *text)
 181 {
 182         return textnw(text, strlen(text)) + dc.font.height;
 183 }
 184
 185 void
 186 setfont(const char *fontstr)
 187 {
 188         char **missing, *def;
 189         int i, n;
 190
 191         missing = NULL;
 192         setlocale(LC_ALL, "");
 193         if(dc.font.set)
 194                 XFreeFontSet(dpy, dc.font.set);
 195         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 196         if(missing) {
 197                 while(n--)
 198                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 199                 XFreeStringList(missing);
 200                 if(dc.font.set) {
 201                         XFreeFontSet(dpy, dc.font.set);
 202                         dc.font.set = NULL;
 203                 }
 204         }
 205         if(dc.font.set) {
 206                 XFontSetExtents *font_extents;
 207                 XFontStruct **xfonts;
 208                 char **font_names;
 209
 210                 dc.font.ascent = dc.font.descent = 0;
 211                 font_extents = XExtentsOfFontSet(dc.font.set);
 212                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 213                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 214                         if(dc.font.ascent < (*xfonts)->ascent)
 215                                 dc.font.ascent = (*xfonts)->ascent;
 216                         if(dc.font.descent < (*xfonts)->descent)
 217                                 dc.font.descent = (*xfonts)->descent;
 218                         xfonts++;
 219                 }
 220         }
 221         else {
 222                 if(dc.font.xfont)
 223                         XFreeFont(dpy, dc.font.xfont);
 224                 dc.font.xfont = NULL;
 225                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 226                 if (!dc.font.xfont)
 227                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 228                 if (!dc.font.xfont)
 229                         eprint("error, cannot init 'fixed' font\n");
 230                 dc.font.ascent = dc.font.xfont->ascent;
 231                 dc.font.descent = dc.font.xfont->descent;
 232         }
 233         dc.font.height = dc.font.ascent + dc.font.descent;
 234 }