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
   7 #include <stdio.h>
   8 #include <string.h>
   9 #include <X11/Xlocale.h>
  10
  11 /* static functions */
  12
  13 static void
  14 drawborder(void)
  15 {
  16         XPoint points[5];
  17         XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
  18         XSetForeground(dpy, dc.gc, dc.border);
  19         points[0].x = dc.x;
  20         points[0].y = dc.y;
  21         points[1].x = dc.w - 1;
  22         points[1].y = 0;
  23         points[2].x = 0;
  24         points[2].y = dc.h - 1;
  25         points[3].x = -(dc.w - 1);
  26         points[3].y = 0;
  27         points[4].x = 0;
  28         points[4].y = -(dc.h - 1);
  29         XDrawLines(dpy, dc.drawable, dc.gc, points, 5, CoordModePrevious);
  30 }
  31
  32 /* extern functions */
  33
  34 void
  35 drawall()
  36 {
  37         Client *c;
  38
  39         for(c = clients; c; c = getnext(c->next))
  40                 drawtitle(c);
  41         drawstatus();
  42 }
  43
  44 void
  45 drawstatus()
  46 {
  47         int i;
  48         Bool istile = arrange == dotile;
  49
  50         dc.x = dc.y = 0;
  51         dc.w = bw;
  52         drawtext(NULL, !istile, False);
  53
  54         dc.w = 0;
  55         for(i = 0; i < TLast; i++) {
  56                 dc.x += dc.w;
  57                 dc.w = textw(tags[i]);
  58                 if(istile)
  59                         drawtext(tags[i], (i == tsel), True);
  60                 else
  61                         drawtext(tags[i], (i != tsel), True);
  62         }
  63         if(sel) {
  64                 dc.x += dc.w;
  65                 dc.w = textw(sel->name);
  66                 drawtext(sel->name, istile, True);
  67         }
  68         dc.w = textw(stext);
  69         dc.x = bx + bw - dc.w;
  70         drawtext(stext, !istile, False);
  71
  72         XCopyArea(dpy, dc.drawable, barwin, dc.gc, 0, 0, bw, bh, 0, 0);
  73         XFlush(dpy);
  74 }
  75
  76 void
  77 drawtext(const char *text, Bool invert, Bool border)
  78 {
  79         int x, y, w, h;
  80         unsigned int len;
  81         static char buf[256];
  82         XGCValues gcv;
  83         XRectangle r = { dc.x, dc.y, dc.w, dc.h };
  84
  85         XSetForeground(dpy, dc.gc, invert ? dc.fg : dc.bg);
  86         XFillRectangles(dpy, dc.drawable, dc.gc, &r, 1);
  87
  88         w = 0;
  89         if(border)
  90                 drawborder();
  91
  92         if(!text)
  93                 return;
  94
  95         len = strlen(text);
  96         if(len >= sizeof(buf))
  97                 len = sizeof(buf) - 1;
  98         memcpy(buf, text, len);
  99         buf[len] = 0;
 100
 101         h = dc.font.ascent + dc.font.descent;
 102         y = dc.y + (dc.h / 2) - (h / 2) + dc.font.ascent;
 103         x = dc.x + (h / 2);
 104
 105         /* shorten text if necessary */
 106         while(len && (w = textnw(buf, len)) > dc.w - h)
 107                 buf[--len] = 0;
 108
 109         if(w > dc.w)
 110                 return; /* too long */
 111
 112         gcv.foreground = invert ? dc.bg : dc.fg;
 113         gcv.background = invert ? dc.fg : dc.bg;
 114         if(dc.font.set) {
 115                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground, &gcv);
 116                 XmbDrawImageString(dpy, dc.drawable, dc.font.set, dc.gc,
 117                                 x, y, buf, len);
 118         }
 119         else {
 120                 gcv.font = dc.font.xfont->fid;
 121                 XChangeGC(dpy, dc.gc, GCForeground | GCBackground | GCFont, &gcv);
 122                 XDrawImageString(dpy, dc.drawable, dc.gc, x, y, buf, len);
 123         }
 124 }
 125
 126 void
 127 drawtitle(Client *c)
 128 {
 129         int i;
 130         Bool istile = arrange == dotile;
 131
 132         if(c == sel) {
 133                 drawstatus();
 134                 XUnmapWindow(dpy, c->title);
 135                 XSetWindowBorder(dpy, c->win, dc.fg);
 136                 return;
 137         }
 138
 139         XSetWindowBorder(dpy, c->win, dc.bg);
 140         XMapWindow(dpy, c->title);
 141
 142         dc.x = dc.y = 0;
 143
 144         dc.w = 0;
 145         for(i = 0; i < TLast; i++) {
 146                 if(c->tags[i]) {
 147                         dc.x += dc.w;
 148                         dc.w = textw(c->tags[i]);
 149                         drawtext(c->tags[i], !istile, True);
 150                 }
 151         }
 152         dc.x += dc.w;
 153         dc.w = textw(c->name);
 154         drawtext(c->name, !istile, True);
 155         XCopyArea(dpy, dc.drawable, c->title, dc.gc,
 156                         0, 0, c->tw, c->th, 0, 0);
 157         XFlush(dpy);
 158 }
 159
 160 unsigned long
 161 getcolor(const char *colstr)
 162 {
 163         XColor color;
 164         Colormap cmap = DefaultColormap(dpy, screen);
 165
 166         XAllocNamedColor(dpy, cmap, colstr, &color, &color);
 167         return color.pixel;
 168 }
 169
 170 void
 171 setfont(const char *fontstr)
 172 {
 173         char **missing, *def;
 174         int i, n;
 175
 176         missing = NULL;
 177         setlocale(LC_ALL, "");
 178         if(dc.font.set)
 179                 XFreeFontSet(dpy, dc.font.set);
 180         dc.font.set = XCreateFontSet(dpy, fontstr, &missing, &n, &def);
 181         if(missing) {
 182                 while(n--)
 183                         fprintf(stderr, "missing fontset: %s\n", missing[n]);
 184                 XFreeStringList(missing);
 185                 if(dc.font.set) {
 186                         XFreeFontSet(dpy, dc.font.set);
 187                         dc.font.set = NULL;
 188                 }
 189         }
 190         if(dc.font.set) {
 191                 XFontSetExtents *font_extents;
 192                 XFontStruct **xfonts;
 193                 char **font_names;
 194
 195                 dc.font.ascent = dc.font.descent = 0;
 196                 font_extents = XExtentsOfFontSet(dc.font.set);
 197                 n = XFontsOfFontSet(dc.font.set, &xfonts, &font_names);
 198                 for(i = 0, dc.font.ascent = 0, dc.font.descent = 0; i < n; i++) {
 199                         if(dc.font.ascent < (*xfonts)->ascent)
 200                                 dc.font.ascent = (*xfonts)->ascent;
 201                         if(dc.font.descent < (*xfonts)->descent)
 202                                 dc.font.descent = (*xfonts)->descent;
 203                         xfonts++;
 204                 }
 205         }
 206         else {
 207                 if(dc.font.xfont)
 208                         XFreeFont(dpy, dc.font.xfont);
 209                 dc.font.xfont = NULL;
 210                 dc.font.xfont = XLoadQueryFont(dpy, fontstr);
 211                 if (!dc.font.xfont)
 212                         dc.font.xfont = XLoadQueryFont(dpy, "fixed");
 213                 if (!dc.font.xfont)
 214                         eprint("error, cannot init 'fixed' font\n");
 215                 dc.font.ascent = dc.font.xfont->ascent;
 216                 dc.font.descent = dc.font.xfont->descent;
 217         }
 218         dc.font.height = dc.font.ascent + dc.font.descent;
 219 }
 220
 221 unsigned int
 222 textnw(char *text, unsigned int len)
 223 {
 224         XRectangle r;
 225         if(dc.font.set) {
 226                 XmbTextExtents(dc.font.set, text, len, NULL, &r);
 227                 return r.width;
 228         }
 229         return XTextWidth(dc.font.xfont, text, len);
 230 }
 231
 232 unsigned int
 233 textw(char *text)
 234 {
 235         return textnw(text, strlen(text)) + dc.font.height;
 236 }