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