view.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
   7 /* static */
   8
   9 static Client *
  10 minclient(void) {
  11         Client *c, *min;
  12
  13         if((clients && clients->isfloat) || arrange == dofloat)
  14                 return clients; /* don't touch floating order */
  15         for(min = c = clients; c; c = c->next)
  16                 if(c->weight < min->weight)
  17                         min = c;
  18         return min;
  19 }
  20
  21 static Client *
  22 nexttiled(Client *c) {
  23         for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
  24         return c;
  25 }
  26
  27 static void
  28 reorder(void) {
  29         Client *c, *newclients, *tail;
  30
  31         newclients = tail = NULL;
  32         while((c = minclient())) {
  33                 detach(c);
  34                 if(tail) {
  35                         c->prev = tail;
  36                         tail->next = c;
  37                         tail = c;
  38                 }
  39                 else
  40                         tail = newclients = c;
  41         }
  42         clients = newclients;
  43 }
  44
  45 static void
  46 togglemax(Client *c)
  47 {
  48         XEvent ev;
  49         if((c->ismax = !c->ismax)) {
  50                 c->rx = c->x; c->x = sx;
  51                 c->ry = c->y; c->y = bh;
  52                 c->rw = c->w; c->w = sw - 2 * BORDERPX;
  53                 c->rh = c->h; c->h = sh - bh - 2 * BORDERPX;
  54         }
  55         else {
  56                 c->x = c->rx;
  57                 c->y = c->ry;
  58                 c->w = c->rw;
  59                 c->h = c->rh;
  60         }
  61         resize(c, True, TopLeft);
  62         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  63 }
  64
  65 /* extern */
  66
  67 void (*arrange)(Arg *) = DEFMODE;
  68 Bool isvertical = VERTICALSTACK;
  69 StackPos stackpos = STACKPOS;
  70
  71 void
  72 detach(Client *c) {
  73         if(c->prev)
  74                 c->prev->next = c->next;
  75         if(c->next)
  76                 c->next->prev = c->prev;
  77         if(c == clients)
  78                 clients = c->next;
  79         c->next = c->prev = NULL;
  80 }
  81
  82 void
  83 dofloat(Arg *arg) {
  84         Client *c;
  85
  86         for(c = clients; c; c = c->next) {
  87                 if(isvisible(c)) {
  88                         resize(c, True, TopLeft);
  89                 }
  90                 else
  91                         ban(c);
  92         }
  93         if(!sel || !isvisible(sel)) {
  94                 for(c = stack; c && !isvisible(c); c = c->snext);
  95                 focus(c);
  96         }
  97         restack();
  98 }
  99
 100 /* This algorithm is based on a (M)aster area and a (S)tacking area.
 101  * It supports following arrangements:
 102  *      SSMMM   MMMMM   MMMSS
 103  *      SSMMM   SSSSS   MMMSS
 104  */
 105 void
 106 dotile(Arg *arg) {
 107         int i, n, stackw, stackh, tw, th;
 108         Client *c;
 109
 110         for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 111                 n++;
 112
 113         if(stackpos == StackBottom) {
 114                 stackw = sw;
 115                 stackh = sh - bh - master;
 116         }
 117         else {
 118                 stackw = sw - master;
 119                 stackh = sh - bh;
 120         }
 121
 122         if(isvertical) {
 123                 tw = stackw;
 124                 if(n > 1)
 125                         th = stackh / (n - 1);
 126                 else
 127                         th = stackh;
 128         }
 129         else {
 130                 th = stackh;
 131                 if(n > 1)
 132                         tw = stackw / (n - 1);
 133                 else
 134                         tw = stackw;
 135         }
 136
 137         for(i = 0, c = clients; c; c = c->next) {
 138                 if(isvisible(c)) {
 139                         if(c->isfloat) {
 140                                 resize(c, True, TopLeft);
 141                                 continue;
 142                         }
 143                         c->ismax = False;
 144                         if(n == 1) { /* only 1 window */
 145                                 c->x = sx;
 146                                 c->y = sy + bh;
 147                                 c->w = sw - 2 * BORDERPX;
 148                                 c->h = sh - 2 * BORDERPX - bh;
 149                         }
 150                         else if(i == 0) { /* master window */
 151                                 switch(stackpos) {
 152                                 case StackLeft:
 153                                         c->x = sx + stackw;
 154                                         c->y = sy + bh;
 155                                         c->w = master - 2 * BORDERPX;
 156                                         c->h = sh - bh - 2 * BORDERPX;
 157                                         break;
 158                                 case StackBottom:
 159                                         c->x = sx;
 160                                         c->y = sy + bh;
 161                                         c->w = sw - 2 * BORDERPX;
 162                                         c->h = master - 2 * BORDERPX;
 163                                         break;
 164                                 case StackRight:
 165                                         c->x = sx;
 166                                         c->y = sy + bh;
 167                                         c->w = master - 2 * BORDERPX;
 168                                         c->h = sh - bh - 2 * BORDERPX;
 169                                         break;
 170                                 }
 171                         }
 172                         else if((isvertical && th > bh) || (!isvertical && tw > MINW)) {
 173                                 /* tile window */
 174                                 c->w = tw - 2 * BORDERPX;
 175                                 c->h = th - 2 * BORDERPX;
 176                                 switch(stackpos) {
 177                                 case StackLeft:
 178                                         if(isvertical) {
 179                                                 c->x = sx;
 180                                                 c->y = sy + (i - 1) * th + bh;
 181                                                 if(i + 1 == n)
 182                                                         c->h = sh - c->y - 2 * BORDERPX;
 183                                         }
 184                                         else {
 185                                                 c->x = sx + (i - 1) * tw;
 186                                                 c->y = sy + bh;
 187                                                 if(i + 1 == n)
 188                                                         c->w = sx + stackw - c->x - 2 * BORDERPX;
 189                                         }
 190                                         break;
 191                                 case StackBottom:
 192                                         if(isvertical) {
 193                                                 c->x = sx;
 194                                                 c->y = sy + master + (i - 1) * th + bh;
 195                                                 if(i + 1 == n)
 196                                                         c->h = sh - c->y - 2 * BORDERPX;
 197                                         }
 198                                         else {
 199                                                 c->x = sx + (i - 1) * tw;
 200                                                 c->y = sy + bh + master;
 201                                                 if(i + 1 == n)
 202                                                         c->w = sw - c->x - 2 * BORDERPX;
 203                                         }
 204                                         break;
 205                                 case StackRight:
 206                                         if(isvertical) {
 207                                                 c->x = sx + master;
 208                                                 c->y = sy + (i - 1) * th + bh;
 209                                                 if(i + 1 == n)
 210                                                         c->h = sh - c->y - 2 * BORDERPX;
 211                                         }
 212                                         else {
 213                                                 c->x = sx + master + (i - 1) * tw;
 214                                                 c->y = sy + bh;
 215                                                 if(i + 1 == n)
 216                                                         c->w = sx + stackw - c->x - 2 * BORDERPX;
 217                                         }
 218                                         break;
 219                                 }
 220                         }
 221                         else { /* fallback if th < bh resp. tw < MINW */
 222                                 c->w = stackw - 2 * BORDERPX;
 223                                 c->h = stackh - 2 * BORDERPX;
 224                                 switch(stackpos) {
 225                                 case StackLeft:
 226                                         c->x = sx;
 227                                         c->y = sy + bh;
 228                                         break;
 229                                 case StackBottom:
 230                                         c->x = sx;
 231                                         c->y = sy + master;
 232                                         break;
 233                                 case StackRight:
 234                                         c->x = sx + master;
 235                                         c->y = sy + bh;
 236                                         break;
 237                                 }
 238                         }
 239                         resize(c, False, TopLeft);
 240                         i++;
 241                 }
 242                 else
 243                         ban(c);
 244         }
 245         if(!sel || !isvisible(sel)) {
 246                 for(c = stack; c && !isvisible(c); c = c->snext);
 247                 focus(c);
 248         }
 249         restack();
 250 }
 251
 252 void
 253 focusnext(Arg *arg) {
 254         Client *c;
 255
 256         if(!sel)
 257                 return;
 258
 259         if(!(c = getnext(sel->next)))
 260                 c = getnext(clients);
 261         if(c) {
 262                 focus(c);
 263                 restack();
 264         }
 265 }
 266
 267 void
 268 focusprev(Arg *arg) {
 269         Client *c;
 270
 271         if(!sel)
 272                 return;
 273
 274         if(!(c = getprev(sel->prev))) {
 275                 for(c = clients; c && c->next; c = c->next);
 276                 c = getprev(c);
 277         }
 278         if(c) {
 279                 focus(c);
 280                 restack();
 281         }
 282 }
 283
 284 Bool
 285 isvisible(Client *c) {
 286         unsigned int i;
 287
 288         for(i = 0; i < ntags; i++)
 289                 if(c->tags[i] && seltag[i])
 290                         return True;
 291         return False;
 292 }
 293
 294 void
 295 resizecol(Arg *arg) {
 296         unsigned int n;
 297         Client *c;
 298
 299         for(n = 0, c = clients; c; c = c->next)
 300                 if(isvisible(c) && !c->isfloat)
 301                         n++;
 302         if(!sel || sel->isfloat || n < 2 || (arrange == dofloat))
 303                 return;
 304
 305         if(sel == getnext(clients)) {
 306                 if(master + arg->i > sw - MINW || master + arg->i < MINW)
 307                         return;
 308                 master += arg->i;
 309         }
 310         else {
 311                 if(master - arg->i > sw - MINW || master - arg->i < MINW)
 312                         return;
 313                 master -= arg->i;
 314         }
 315         arrange(NULL);
 316 }
 317
 318 void
 319 restack(void) {
 320         Client *c;
 321         XEvent ev;
 322
 323         if(!sel) {
 324                 drawstatus();
 325                 return;
 326         }
 327         if(sel->isfloat || arrange == dofloat) {
 328                 XRaiseWindow(dpy, sel->win);
 329                 XRaiseWindow(dpy, sel->twin);
 330         }
 331         if(arrange != dofloat)
 332                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 333                         XLowerWindow(dpy, c->twin);
 334                         XLowerWindow(dpy, c->win);
 335                 }
 336         drawall();
 337         XSync(dpy, False);
 338         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 339 }
 340
 341 void
 342 togglemode(Arg *arg) {
 343         arrange = (arrange == dofloat) ? dotile : dofloat;
 344         if(sel)
 345                 arrange(NULL);
 346         else
 347                 drawstatus();
 348 }
 349
 350 void
 351 toggleview(Arg *arg) {
 352         unsigned int i;
 353
 354         seltag[arg->i] = !seltag[arg->i];
 355         for(i = 0; i < ntags && !seltag[i]; i++);
 356         if(i == ntags)
 357                 seltag[arg->i] = True; /* cannot toggle last view */
 358         reorder();
 359         arrange(NULL);
 360 }
 361
 362 void
 363 togglestackdir(Arg *arg) {
 364         if(arrange == dofloat)
 365                 return;
 366         isvertical = !isvertical;
 367         arrange(NULL);
 368 }
 369
 370 void
 371 togglestackpos(Arg *arg) {
 372         if(arrange == dofloat)
 373                 return;
 374         if(stackpos == StackBottom)
 375                 stackpos = STACKPOS;
 376         else
 377                 stackpos = StackBottom;
 378         updatemaster();
 379         arrange(NULL);
 380 }
 381
 382 void
 383 updatemaster(void) {
 384         master = ((stackpos == StackBottom ? sh - bh : sw) * MASTER) / 100;
 385 }
 386
 387 void
 388 view(Arg *arg) {
 389         unsigned int i;
 390
 391         for(i = 0; i < ntags; i++)
 392                 seltag[i] = False;
 393         seltag[arg->i] = True;
 394         reorder();
 395         arrange(NULL);
 396 }
 397
 398 void
 399 viewall(Arg *arg) {
 400         unsigned int i;
 401
 402         for(i = 0; i < ntags; i++)
 403                 seltag[i] = True;
 404         reorder();
 405         arrange(NULL);
 406 }
 407
 408
 409
 410 void
 411 zoom(Arg *arg) {
 412         unsigned int n;
 413         Client *c;
 414
 415         if(!sel)
 416                 return;
 417
 418         if(sel->isfloat || (arrange == dofloat)) {
 419                 togglemax(sel);
 420                 return;
 421         }
 422
 423         for(n = 0, c = clients; c; c = c->next)
 424                 if(isvisible(c) && !c->isfloat)
 425                         n++;
 426         if(n < 2 || (arrange == dofloat))
 427                 return;
 428
 429         if((c = sel) == nexttiled(clients))
 430                 if(!(c = nexttiled(c->next)))
 431                         return;
 432         detach(c);
 433         if(clients)
 434                 clients->prev = c;
 435         c->next = clients;
 436         clients = c;
 437         focus(c);
 438         arrange(NULL);
 439 }