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 dofloat(Arg *arg)
  39 {
  40         Client *c;
  41
  42         for(c = clients; c; c = c->next) {
  43                 c->ismax = False;
  44                 if(isvisible(c)) {
  45                         resize(c, True, TopLeft);
  46                 }
  47                 else
  48                         ban(c);
  49         }
  50         if((sel = getnext(clients))) {
  51                 focus(sel);
  52                 restack();
  53         }
  54         else
  55                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  56 }
  57
  58 void
  59 dotile(Arg *arg)
  60 {
  61         int h, i, n, w;
  62         Client *c;
  63
  64         w = sw - mw;
  65         for(n = 0, c = clients; c; c = c->next)
  66                 if(isvisible(c) && !c->isfloat)
  67                         n++;
  68
  69         if(n > 1)
  70                 h = (sh - bh) / (n - 1);
  71         else
  72                 h = sh - bh;
  73
  74         for(i = 0, c = clients; c; c = c->next) {
  75                 c->ismax = False;
  76                 if(isvisible(c)) {
  77                         if(c->isfloat) {
  78                                 resize(c, True, TopLeft);
  79                                 continue;
  80                         }
  81                         if(n == 1) {
  82                                 c->x = sx;
  83                                 c->y = sy + bh;
  84                                 c->w = sw - 2;
  85                                 c->h = sh - 2 - bh;
  86                         }
  87                         else if(i == 0) {
  88                                 c->x = sx;
  89                                 c->y = sy + bh;
  90                                 c->w = mw - 2;
  91                                 c->h = sh - 2 - bh;
  92                         }
  93                         else if(h > bh) {
  94                                 c->x = sx + mw;
  95                                 c->y = sy + (i - 1) * h + bh;
  96                                 c->w = w - 2;
  97                                 if(i + 1 == n)
  98                                         c->h = sh - c->y - 2;
  99                                 else
 100                                         c->h = h - 2;
 101                         }
 102                         else { /* fallback if h < bh */
 103                                 c->x = sx + mw;
 104                                 c->y = sy + bh;
 105                                 c->w = w - 2;
 106                                 c->h = sh - 2 - bh;
 107                         }
 108                         resize(c, False, TopLeft);
 109                         i++;
 110                 }
 111                 else
 112                         ban(c);
 113         }
 114         if((sel = getnext(clients)))
 115                 focus(sel);
 116         else
 117                 XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
 118         restack();
 119 }
 120
 121 Client *
 122 getnext(Client *c)
 123 {
 124         for(; c && !isvisible(c); c = c->next);
 125         return c;
 126 }
 127
 128 Client *
 129 getprev(Client *c)
 130 {
 131         for(; c && !isvisible(c); c = c->prev);
 132         return c;
 133 }
 134
 135 void
 136 initrregs()
 137 {
 138         unsigned int i;
 139         regex_t *reg;
 140
 141         if(rreg)
 142                 return;
 143         len = sizeof(rule) / sizeof(rule[0]);
 144         rreg = emallocz(len * sizeof(RReg));
 145
 146         for(i = 0; i < len; i++) {
 147                 if(rule[i].clpattern) {
 148                         reg = emallocz(sizeof(regex_t));
 149                         if(regcomp(reg, rule[i].clpattern, 0))
 150                                 free(reg);
 151                         else
 152                                 rreg[i].clregex = reg;
 153                 }
 154                 if(rule[i].tpattern) {
 155                         reg = emallocz(sizeof(regex_t));
 156                         if(regcomp(reg, rule[i].tpattern, 0))
 157                                 free(reg);
 158                         else
 159                                 rreg[i].tregex = reg;
 160                 }
 161         }
 162 }
 163
 164 Bool
 165 isvisible(Client *c)
 166 {
 167         unsigned int i;
 168
 169         for(i = 0; i < ntags; i++)
 170                 if(c->tags[i] && seltag[i])
 171                         return True;
 172         return False;
 173 }
 174
 175 void
 176 restack()
 177 {
 178         static unsigned int nwins = 0;
 179         static Window *wins = NULL;
 180         unsigned int f, fi, m, mi, n;
 181         Client *c;
 182         XEvent ev;
 183
 184         for(f = 0, m = 0, c = clients; c; c = c->next)
 185                 if(isvisible(c)) {
 186                         if(c->isfloat || arrange == dofloat)
 187                                 f++;
 188                         else
 189                                 m++;
 190                 }
 191         if(!(n = 2 * (f + m))) {
 192                 drawstatus();
 193                 return;
 194         }
 195         if(nwins < n) {
 196                 nwins = n;
 197                 wins = erealloc(wins, nwins * sizeof(Window));
 198         }
 199
 200         fi = 0;
 201         mi = 2 * f;
 202         if(sel->isfloat || arrange == dofloat) {
 203                 wins[fi++] = sel->title;
 204                 wins[fi++] = sel->win;
 205         }
 206         else {
 207                 wins[mi++] = sel->title;
 208                 wins[mi++] = sel->win;
 209         }
 210         for(c = clients; c; c = c->next)
 211                 if(isvisible(c) && c != sel) {
 212                         if(c->isfloat || arrange == dofloat) {
 213                                 wins[fi++] = c->title;
 214                                 wins[fi++] = c->win;
 215                         }
 216                         else {
 217                                 wins[mi++] = c->title;
 218                                 wins[mi++] = c->win;
 219                         }
 220                 }
 221         XRestackWindows(dpy, wins, n);
 222         drawall();
 223         XSync(dpy, False);
 224         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 225 }
 226
 227 void
 228 settags(Client *c)
 229 {
 230         char classinst[256];
 231         unsigned int i, j;
 232         regmatch_t tmp;
 233         Bool matched = False;
 234         XClassHint ch;
 235
 236         if(XGetClassHint(dpy, c->win, &ch)) {
 237                 snprintf(classinst, sizeof(classinst), "%s:%s",
 238                                 ch.res_class ? ch.res_class : "",
 239                                 ch.res_name ? ch.res_name : "");
 240                 for(i = 0; !matched && i < len; i++)
 241                         if(rreg[i].clregex && !regexec(rreg[i].clregex, classinst, 1, &tmp, 0)) {
 242                                 c->isfloat = rule[i].isfloat;
 243                                 for(j = 0; rreg[i].tregex && j < ntags; j++) {
 244                                         if(!regexec(rreg[i].tregex, tags[j], 1, &tmp, 0)) {
 245                                                 matched = True;
 246                                                 c->tags[j] = True;
 247                                         }
 248                                 }
 249                         }
 250                 if(ch.res_class)
 251                         XFree(ch.res_class);
 252                 if(ch.res_name)
 253                         XFree(ch.res_name);
 254         }
 255         if(!matched)
 256                 for(i = 0; i < ntags; i++)
 257                         c->tags[i] = seltag[i];
 258 }
 259
 260 void
 261 tag(Arg *arg)
 262 {
 263         unsigned int i;
 264
 265         if(!sel)
 266                 return;
 267
 268         for(i = 0; i < ntags; i++)
 269                 sel->tags[i] = False;
 270         sel->tags[arg->i] = True;
 271         settitle(sel);
 272         arrange(NULL);
 273 }
 274
 275 void
 276 togglemode(Arg *arg)
 277 {
 278         arrange = arrange == dofloat ? dotile : dofloat;
 279         arrange(NULL);
 280 }
 281
 282 void
 283 toggletag(Arg *arg)
 284 {
 285         unsigned int i;
 286
 287         if(!sel)
 288                 return;
 289
 290         sel->tags[arg->i] = !sel->tags[arg->i];
 291         for(i = 0; i < ntags && !sel->tags[i]; i++);
 292         if(i == ntags)
 293                 sel->tags[arg->i] = True;
 294         settitle(sel);
 295 }
 296
 297
 298 void
 299 toggleview(Arg *arg)
 300 {
 301         unsigned int i;
 302
 303         seltag[arg->i] = !seltag[arg->i];
 304         for(i = 0; i < ntags && !seltag[i]; i++);
 305         if(i == ntags)
 306                 seltag[arg->i] = True; /* cannot toggle last view */
 307         arrange(NULL);
 308 }
 309
 310 void
 311 view(Arg *arg)
 312 {
 313         unsigned int i;
 314
 315         for(i = 0; i < ntags; i++)
 316                 seltag[i] = False;
 317         seltag[arg->i] = True;
 318         arrange(NULL);
 319 }