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