view.c

   1 /* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
   2  * See LICENSE file for license details.
   3  */
   4 #include "dwm.h"
   5 #include <regex.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <sys/types.h>
  10 #include <X11/Xutil.h>
  11
  12 void (*arrange)(void) = DEFMODE;
  13 unsigned int master = MASTER;
  14 unsigned int nmaster = NMASTER;
  15
  16 /* static */
  17
  18 typedef struct {
  19         const char *prop;
  20         const char *tags;
  21         Bool isfloat;
  22 } Rule;
  23
  24 typedef struct {
  25         regex_t *propregex;
  26         regex_t *tagregex;
  27 } Regexps;
  28
  29 TAGS
  30 RULES
  31
  32 static Regexps *regexps = NULL;
  33 static unsigned int len = 0;
  34
  35 static Client *
  36 nextmanaged(Client *c) {
  37         for(; c && (c->isfloat || !isvisible(c)); c = c->next);
  38         return c;
  39 }
  40
  41 static void
  42 togglemax(Client *c) {
  43         XEvent ev;
  44
  45         if(c->isfixed)
  46                 return;
  47         if((c->ismax = !c->ismax)) {
  48                 c->rx = c->x;
  49                 c->ry = c->y;
  50                 c->rw = c->w;
  51                 c->rh = c->h;
  52                 resize(c, wax, way, waw - 2 * BORDERPX, wah - 2 * BORDERPX, True);
  53         }
  54         else
  55                 resize(c, c->rx, c->ry, c->rw, c->rh, True);
  56         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  57 }
  58
  59 /* extern */
  60
  61 void
  62 compileregexps(void) {
  63         unsigned int i;
  64         regex_t *reg;
  65
  66         if(regexps)
  67                 return;
  68         len = sizeof rule / sizeof rule[0];
  69         regexps = emallocz(len * sizeof(Regexps));
  70         for(i = 0; i < len; i++) {
  71                 if(rule[i].prop) {
  72                         reg = emallocz(sizeof(regex_t));
  73                         if(regcomp(reg, rule[i].prop, REG_EXTENDED))
  74                                 free(reg);
  75                         else
  76                                 regexps[i].propregex = reg;
  77                 }
  78                 if(rule[i].tags) {
  79                         reg = emallocz(sizeof(regex_t));
  80                         if(regcomp(reg, rule[i].tags, REG_EXTENDED))
  81                                 free(reg);
  82                         else
  83                                 regexps[i].tagregex = reg;
  84                 }
  85         }
  86 }
  87
  88 void
  89 dofloat(void) {
  90         Client *c;
  91
  92         for(c = clients; c; c = c->next) {
  93                 if(isvisible(c)) {
  94                         if(c->isbanned)
  95                                 XMoveWindow(dpy, c->win, c->x, c->y);
  96                         c->isbanned = False;
  97                         resize(c, c->x, c->y, c->w, c->h, True);
  98                 }
  99                 else {
 100                         c->isbanned = True;
 101                         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 102                 }
 103         }
 104         if(!sel || !isvisible(sel)) {
 105                 for(c = stack; c && !isvisible(c); c = c->snext);
 106                 focus(c);
 107         }
 108         restack();
 109 }
 110 void
 111 dotile(void) {
 112         unsigned int i, n, nx, ny, nw, nh, mw, mh, tw, th;
 113         Client *c;
 114
 115         for(n = 0, c = nextmanaged(clients); c; c = nextmanaged(c->next))
 116                 n++;
 117         /* window geoms */
 118         mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
 119         mw = (n > nmaster) ? (waw * master) / 1000 : waw;
 120         th = (n > nmaster) ? wah / (n - nmaster) : 0;
 121         tw = waw - mw;
 122
 123         for(i = 0, c = clients; c; c = c->next)
 124                 if(isvisible(c)) {
 125                         if(c->isbanned)
 126                                 XMoveWindow(dpy, c->win, c->x, c->y);
 127                         c->isbanned = False;
 128                         if(c->isfloat)
 129                                 continue;
 130                         c->ismax = False;
 131                         nx = wax;
 132                         ny = way;
 133                         if(i < nmaster) {
 134                                 ny += i * mh;
 135                                 nw = mw - 2 * BORDERPX;
 136                                 nh = mh - 2 * BORDERPX;
 137                         }
 138                         else {  /* tile window */
 139                                 nx += mw;
 140                                 nw = tw - 2 * BORDERPX;
 141                                 if(th > 2 * BORDERPX) {
 142                                         ny += (i - nmaster) * th;
 143                                         nh = th - 2 * BORDERPX;
 144                                 }
 145                                 else /* fallback if th <= 2 * BORDERPX */
 146                                         nh = wah - 2 * BORDERPX;
 147                         }
 148                         resize(c, nx, ny, nw, nh, False);
 149                         i++;
 150                 }
 151                 else {
 152                         c->isbanned = True;
 153                         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 154                 }
 155         if(!sel || !isvisible(sel)) {
 156                 for(c = stack; c && !isvisible(c); c = c->snext);
 157                 focus(c);
 158         }
 159         restack();
 160 }
 161
 162 void
 163 incnmaster(Arg *arg) {
 164         if((arrange == dofloat) || (nmaster + arg->i < 1)
 165         || (wah / (nmaster + arg->i) <= 2 * BORDERPX))
 166                 return;
 167         nmaster += arg->i;
 168         if(sel)
 169                 arrange();
 170         else
 171                 drawstatus();
 172 }
 173
 174 Bool
 175 isvisible(Client *c) {
 176         unsigned int i;
 177
 178         for(i = 0; i < ntags; i++)
 179                 if(c->tags[i] && seltag[i])
 180                         return True;
 181         return False;
 182 }
 183
 184 void
 185 resizemaster(Arg *arg) {
 186         if(arrange != dotile)
 187                 return;
 188         if(arg->i == 0)
 189                 master = MASTER;
 190         else {
 191                 if(waw * (master + arg->i) / 1000 >= waw - 2 * BORDERPX
 192                 || waw * (master + arg->i) / 1000 <= 2 * BORDERPX)
 193                         return;
 194                 master += arg->i;
 195         }
 196         arrange();
 197 }
 198
 199 void
 200 restack(void) {
 201         Client *c;
 202         XEvent ev;
 203
 204         drawstatus();
 205         if(!sel)
 206                 return;
 207         if(sel->isfloat || arrange == dofloat)
 208                 XRaiseWindow(dpy, sel->win);
 209         if(arrange != dofloat) {
 210                 if(!sel->isfloat)
 211                         XLowerWindow(dpy, sel->win);
 212                 for(c = nextmanaged(clients); c; c = nextmanaged(c->next)) {
 213                         if(c == sel)
 214                                 continue;
 215                         XLowerWindow(dpy, c->win);
 216                 }
 217         }
 218         XSync(dpy, False);
 219         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 220 }
 221
 222 void
 223 settags(Client *c, Client *trans) {
 224         char prop[512];
 225         unsigned int i, j;
 226         regmatch_t tmp;
 227         Bool matched = trans != NULL;
 228         XClassHint ch = { 0 };
 229
 230         if(matched)
 231                 for(i = 0; i < ntags; i++)
 232                         c->tags[i] = trans->tags[i];
 233         else {
 234                 XGetClassHint(dpy, c->win, &ch);
 235                 snprintf(prop, sizeof prop, "%s:%s:%s",
 236                                 ch.res_class ? ch.res_class : "",
 237                                 ch.res_name ? ch.res_name : "", c->name);
 238                 for(i = 0; i < len; i++)
 239                         if(regexps[i].propregex && !regexec(regexps[i].propregex, prop, 1, &tmp, 0)) {
 240                                 c->isfloat = rule[i].isfloat;
 241                                 for(j = 0; regexps[i].tagregex && j < ntags; j++) {
 242                                         if(!regexec(regexps[i].tagregex, tags[j], 1, &tmp, 0)) {
 243                                                 matched = True;
 244                                                 c->tags[j] = True;
 245                                         }
 246                                 }
 247                         }
 248                 if(ch.res_class)
 249                         XFree(ch.res_class);
 250                 if(ch.res_name)
 251                         XFree(ch.res_name);
 252         }
 253         if(!matched)
 254                 for(i = 0; i < ntags; i++)
 255                         c->tags[i] = seltag[i];
 256 }
 257
 258 void
 259 tag(Arg *arg) {
 260         unsigned int i;
 261
 262         if(!sel)
 263                 return;
 264         for(i = 0; i < ntags; i++)
 265                 sel->tags[i] = (arg->i == -1) ? True : False;
 266         if(arg->i >= 0 && arg->i < ntags)
 267                 sel->tags[arg->i] = True;
 268         arrange();
 269 }
 270
 271 void
 272 togglefloat(Arg *arg) {
 273         if(!sel || arrange == dofloat)
 274                 return;
 275         sel->isfloat = !sel->isfloat;
 276         arrange();
 277 }
 278
 279 void
 280 toggletag(Arg *arg) {
 281         unsigned int i;
 282
 283         if(!sel)
 284                 return;
 285         sel->tags[arg->i] = !sel->tags[arg->i];
 286         for(i = 0; i < ntags && !sel->tags[i]; i++);
 287         if(i == ntags)
 288                 sel->tags[arg->i] = True;
 289         arrange();
 290 }
 291
 292 void
 293 togglemode(Arg *arg) {
 294         arrange = (arrange == dofloat) ? dotile : dofloat;
 295         if(sel)
 296                 arrange();
 297         else
 298                 drawstatus();
 299 }
 300
 301 void
 302 toggleview(Arg *arg) {
 303         unsigned int i;
 304
 305         seltag[arg->i] = !seltag[arg->i];
 306         for(i = 0; i < ntags && !seltag[i]; i++);
 307         if(i == ntags)
 308                 seltag[arg->i] = True; /* cannot toggle last view */
 309         arrange();
 310 }
 311
 312 void
 313 view(Arg *arg) {
 314         unsigned int i;
 315
 316         for(i = 0; i < ntags; i++)
 317                 seltag[i] = (arg->i == -1) ? True : False;
 318         if(arg->i >= 0 && arg->i < ntags)
 319                 seltag[arg->i] = True;
 320         arrange();
 321 }
 322
 323 void
 324 zoom(Arg *arg) {
 325         unsigned int n;
 326         Client *c;
 327
 328         if(!sel)
 329                 return;
 330         if(sel->isfloat || (arrange == dofloat)) {
 331                 togglemax(sel);
 332                 return;
 333         }
 334         for(n = 0, c = nextmanaged(clients); c; c = nextmanaged(c->next))
 335                 n++;
 336
 337         if((c = sel) == nextmanaged(clients))
 338                 if(!(c = nextmanaged(c->next)))
 339                         return;
 340         detach(c);
 341         attach(c);
 342         focus(c);
 343         arrange();
 344 }