tag.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5 #include "dwm.h"
   6 #include <regex.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <sys/types.h>
  11 #include <X11/Xutil.h>
  12
  13
  14 typedef struct {
  15         const char *clpattern;
  16         const char *tpattern;
  17         Bool isfloat;
  18 } Rule;
  19
  20 typedef struct {
  21         regex_t *clregex;
  22         regex_t *tregex;
  23 } RReg;
  24
  25 /* static */
  26
  27 TAGS
  28 RULES
  29
  30 static RReg *rreg = NULL;
  31 static unsigned int len = 0;
  32
  33 void (*arrange)(Arg *) = DEFMODE;
  34
  35 /* extern */
  36
  37 void
  38 appendtag(Arg *arg)
  39 {
  40         Client *c = sel;
  41
  42         if(!c)
  43                 return;
  44
  45         c->tags[arg->i] = True;
  46         arrange(NULL);
  47         focus(c);
  48         restack();
  49 }
  50
  51 void
  52 dofloat(Arg *arg)
  53 {
  54         Client *c;
  55
  56         for(c = clients; c; c = c->next) {
  57                 c->ismax = False;
  58                 if(isvisible(c)) {
  59                         resize(c, True, TopLeft);
  60                 }
  61                 else
  62                         ban(c);
  63         }
  64         if((sel = getnext(clients))) {
  65                 focus(sel);
  66                 restack();
  67         }
  68         else
  69                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  70 }
  71
  72 void
  73 dotile(Arg *arg)
  74 {
  75         int h, i, n, w;
  76         Client *c;
  77
  78         w = sw - mw;
  79         for(n = 0, c = clients; c; c = c->next)
  80                 if(isvisible(c) && !c->isfloat)
  81                         n++;
  82
  83         if(n > 1)
  84                 h = (sh - bh) / (n - 1);
  85         else
  86                 h = sh - bh;
  87
  88         for(i = 0, c = clients; c; c = c->next) {
  89                 c->ismax = False;
  90                 if(isvisible(c)) {
  91                         if(c->isfloat) {
  92                                 resize(c, True, TopLeft);
  93                                 continue;
  94                         }
  95                         if(n == 1) {
  96                                 c->x = sx;
  97                                 c->y = sy + bh;
  98                                 c->w = sw - 2;
  99                                 c->h = sh - 2 - bh;
 100                         }
 101                         else if(i == 0) {
 102                                 c->x = sx;
 103                                 c->y = sy + bh;
 104                                 c->w = mw - 2;
 105                                 c->h = sh - 2 - bh;
 106                         }
 107                         else if(h > bh) {
 108                                 c->x = sx + mw;
 109                                 c->y = sy + (i - 1) * h + bh;
 110                                 c->w = w - 2;
 111                                 if(i + 1 == n)
 112                                         c->h = sh - c->y - 2;
 113                                 else
 114                                         c->h = h - 2;
 115                         }
 116                         else { /* fallback if h < bh */
 117                                 c->x = sx + mw;
 118                                 c->y = sy + bh;
 119                                 c->w = w - 2;
 120                                 c->h = sh - 2 - bh;
 121                         }
 122                         resize(c, False, TopLeft);
 123                         i++;
 124                 }
 125                 else
 126                         ban(c);
 127         }
 128         if((sel = getnext(clients)))
 129                 focus(sel);
 130         else
 131                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 132         restack();
 133 }
 134
 135 Client *
 136 getnext(Client *c)
 137 {
 138         for(; c && !isvisible(c); c = c->next);
 139         return c;
 140 }
 141
 142 Client *
 143 getprev(Client *c)
 144 {
 145         for(; c && !isvisible(c); c = c->prev);
 146         return c;
 147 }
 148
 149 void
 150 initrregs()
 151 {
 152         unsigned int i;
 153         regex_t *reg;
 154
 155         if(rreg)
 156                 return;
 157         len = sizeof(rule) / sizeof(rule[0]);
 158         rreg = emallocz(len * sizeof(RReg));
 159
 160         for(i = 0; i < len; i++) {
 161                 if(rule[i].clpattern) {
 162                         reg = emallocz(sizeof(regex_t));
 163                         if(regcomp(reg, rule[i].clpattern, 0))
 164                                 free(reg);
 165                         else
 166                                 rreg[i].clregex = reg;
 167                 }
 168                 if(rule[i].tpattern) {
 169                         reg = emallocz(sizeof(regex_t));
 170                         if(regcomp(reg, rule[i].tpattern, 0))
 171                                 free(reg);
 172                         else
 173                                 rreg[i].tregex = reg;
 174                 }
 175         }
 176 }
 177
 178 Bool
 179 isvisible(Client *c)
 180 {
 181         unsigned int i;
 182
 183         for(i = 0; i < ntags; i++)
 184                 if(c->tags[i] && seltag[i])
 185                         return True;
 186         return False;
 187 }
 188
 189 void
 190 replacetag(Arg *arg)
 191 {
 192         int i;
 193
 194         if(!sel)
 195                 return;
 196
 197         for(i = 0; i < ntags; i++)
 198                 sel->tags[i] = False;
 199         appendtag(arg);
 200 }
 201
 202 void
 203 restack()
 204 {
 205         static unsigned int nwins = 0;
 206         static Window *wins = NULL;
 207         unsigned int f, fi, m, mi, n;
 208         Client *c;
 209         XEvent ev;
 210
 211         for(f = 0, m = 0, c = clients; c; c = c->next)
 212                 if(isvisible(c)) {
 213                         if(c->isfloat || arrange == dofloat)
 214                                 f++;
 215                         else
 216                                 m++;
 217                 }
 218         if(!(n = 2 * (f + m))) {
 219                 drawstatus();
 220                 return;
 221         }
 222         if(nwins < n) {
 223                 nwins = n;
 224                 wins = erealloc(wins, nwins * sizeof(Window));
 225         }
 226
 227         fi = 0;
 228         mi = 2 * f;
 229         if(sel->isfloat || arrange == dofloat) {
 230                 wins[fi++] = sel->title;
 231                 wins[fi++] = sel->win;
 232         }
 233         else {
 234                 wins[mi++] = sel->title;
 235                 wins[mi++] = sel->win;
 236         }
 237         for(c = clients; c; c = c->next)
 238                 if(isvisible(c) && c != sel) {
 239                         if(c->isfloat || arrange == dofloat) {
 240                                 wins[fi++] = c->title;
 241                                 wins[fi++] = c->win;
 242                         }
 243                         else {
 244                                 wins[mi++] = c->title;
 245                                 wins[mi++] = c->win;
 246                         }
 247                 }
 248         XRestackWindows(dpy, wins, n);
 249         drawall();
 250         XSync(dpy, False);
 251         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 252 }
 253
 254 void
 255 settags(Client *c)
 256 {
 257         char classinst[256];
 258         unsigned int i, j;
 259         regmatch_t tmp;
 260         Bool matched = False;
 261         XClassHint ch;
 262
 263         if(XGetClassHint(dpy, c->win, &ch)) {
 264                 snprintf(classinst, sizeof(classinst), "%s:%s",
 265                                 ch.res_class ? ch.res_class : "",
 266                                 ch.res_name ? ch.res_name : "");
 267                 for(i = 0; !matched && i < len; i++)
 268                         if(rreg[i].clregex && !regexec(rreg[i].clregex, classinst, 1, &tmp, 0)) {
 269                                 c->isfloat = rule[i].isfloat;
 270                                 for(j = 0; rreg[i].tregex && j < ntags; j++) {
 271                                         if(!regexec(rreg[i].tregex, tags[j], 1, &tmp, 0)) {
 272                                                 matched = True;
 273                                                 c->tags[j] = True;
 274                                         }
 275                                 }
 276                         }
 277                 if(ch.res_class)
 278                         XFree(ch.res_class);
 279                 if(ch.res_name)
 280                         XFree(ch.res_name);
 281         }
 282         if(!matched)
 283                 for(i = 0; i < ntags; i++)
 284                         c->tags[i] = seltag[i];
 285 }
 286
 287 void
 288 togglemode(Arg *arg)
 289 {
 290         arrange = arrange == dofloat ? dotile : dofloat;
 291         arrange(NULL);
 292 }
 293
 294 void
 295 view(Arg *arg)
 296 {
 297         unsigned int i;
 298
 299         for(i = 0; i < ntags; i++)
 300                 seltag[i] = False;
 301         seltag[arg->i] = True;
 302         arrange(NULL);
 303 }
 304
 305 void
 306 toggleview(Arg *arg)
 307 {
 308         unsigned int i;
 309
 310         seltag[arg->i] = !seltag[arg->i];
 311         for(i = 0; !seltag[i] && i < ntags; i++);
 312         if(i == ntags)
 313                 seltag[arg->i] = True; /* cannot toggle last view */
 314         arrange(NULL);
 315 }