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
   6 /* static */
   7
   8 static Client *
   9 nexttiled(Client *c) {
  10         for(c = getnext(c); c && c->isfloat; c = getnext(c->next));
  11         return c;
  12 }
  13
  14 static Bool
  15 ismaster(Client *c) {
  16         Client *cl;
  17         unsigned int i;
  18
  19         for(cl = nexttiled(clients), i = 0; cl && cl != c; cl = nexttiled(cl->next), i++);
  20         return i < nmaster;
  21 }
  22
  23 static void
  24 pop(Client *c) {
  25         detach(c);
  26         if(clients)
  27                 clients->prev = c;
  28         c->next = clients;
  29         clients = c;
  30 }
  31
  32 static void
  33 swap(Client *c1, Client *c2) {
  34         Client tmp = *c1;
  35         Client *c1p = c1->prev;
  36         Client *c1n = c1->next;
  37         Client *c1s = c1->snext;
  38         Client *c2p = c2->prev;
  39         Client *c2n = c2->next;
  40         Client *c2s = c2->snext;
  41
  42         *c1 = *c2;
  43         *c2 = tmp;
  44         c1->prev = c1p;
  45         c1->next = c1n;
  46         c1->snext = c1s;
  47         c2->prev = c2p;
  48         c2->next = c2n;
  49         c2->snext = c2s;
  50 }
  51
  52 static void
  53 togglemax(Client *c) {
  54         XEvent ev;
  55
  56         if(c->isfixed)
  57                 return;
  58
  59         if((c->ismax = !c->ismax)) {
  60                 c->rx = c->x; c->x = wax;
  61                 c->ry = c->y; c->y = way;
  62                 c->rw = c->w; c->w = waw - 2 * BORDERPX;
  63                 c->rh = c->h; c->h = wah - 2 * BORDERPX;
  64         }
  65         else {
  66                 c->x = c->rx;
  67                 c->y = c->ry;
  68                 c->w = c->rw;
  69                 c->h = c->rh;
  70         }
  71         resize(c, True, TopLeft);
  72         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  73 }
  74
  75 static Client *
  76 topofstack() {
  77         Client *c;
  78         unsigned int i;
  79
  80         for(c = nexttiled(clients), i = 0; c && i < nmaster; c = nexttiled(c->next), i++);
  81         return (i < nmaster) ? NULL : c;
  82 }
  83
  84 /* extern */
  85
  86 void (*arrange)(void) = DEFMODE;
  87
  88 void
  89 detach(Client *c) {
  90         if(c->prev)
  91                 c->prev->next = c->next;
  92         if(c->next)
  93                 c->next->prev = c->prev;
  94         if(c == clients)
  95                 clients = c->next;
  96         c->next = c->prev = NULL;
  97 }
  98
  99 void
 100 dofloat(void) {
 101         Client *c;
 102
 103         for(c = clients; c; c = c->next) {
 104                 if(isvisible(c)) {
 105                         resize(c, True, TopLeft);
 106                 }
 107                 else
 108                         ban(c);
 109         }
 110         if(!sel || !isvisible(sel)) {
 111                 for(c = stack; c && !isvisible(c); c = c->snext);
 112                 focus(c);
 113         }
 114         restack();
 115 }
 116
 117 void
 118 dotile(void) {
 119         unsigned int i, n, mw, mh, tw, th;
 120         Client *c;
 121
 122         for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 123                 n++;
 124         /* window geoms */
 125         mw = (n > nmaster) ? (waw * master) / 1000 : waw;
 126         mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
 127         tw = waw - mw;
 128         th = (n > nmaster) ? wah / (n - nmaster) : 0;
 129
 130         for(i = 0, c = clients; c; c = c->next)
 131                 if(isvisible(c)) {
 132                         if(c->isfloat) {
 133                                 resize(c, True, TopLeft);
 134                                 continue;
 135                         }
 136                         c->ismax = False;
 137                         c->x = wax;
 138                         c->y = way;
 139                         if(i < nmaster) {
 140                                 c->y += i * mh;
 141                                 c->w = mw - 2 * BORDERPX;
 142                                 c->h = mh - 2 * BORDERPX;
 143                         }
 144                         else {  /* tile window */
 145                                 c->x += mw;
 146                                 c->w = tw - 2 * BORDERPX;
 147                                 if(th > bh) {
 148                                         c->y += (i - nmaster) * th;
 149                                         c->h = th - 2 * BORDERPX;
 150                                 }
 151                                 else /* fallback if th < bh */
 152                                         c->h = wah - 2 * BORDERPX;
 153                         }
 154                         resize(c, False, TopLeft);
 155                         i++;
 156                 }
 157                 else
 158                         ban(c);
 159
 160         if(!sel || !isvisible(sel)) {
 161                 for(c = stack; c && !isvisible(c); c = c->snext);
 162                 focus(c);
 163         }
 164         restack();
 165 }
 166
 167 void
 168 focusnext(Arg *arg) {
 169         Client *c;
 170
 171         if(!sel)
 172                 return;
 173         if(!(c = getnext(sel->next)))
 174                 c = getnext(clients);
 175         if(c) {
 176                 focus(c);
 177                 restack();
 178         }
 179 }
 180
 181 void
 182 focusprev(Arg *arg) {
 183         Client *c;
 184
 185         if(!sel)
 186                 return;
 187         if(!(c = getprev(sel->prev))) {
 188                 for(c = clients; c && c->next; c = c->next);
 189                 c = getprev(c);
 190         }
 191         if(c) {
 192                 focus(c);
 193                 restack();
 194         }
 195 }
 196
 197 void
 198 incnmaster(Arg *arg) {
 199         if((nmaster + arg->i < 1) || (wah / (nmaster + arg->i) < bh))
 200                 return;
 201         nmaster += arg->i;
 202         arrange();
 203 }
 204
 205 Bool
 206 isvisible(Client *c) {
 207         unsigned int i;
 208
 209         for(i = 0; i < ntags; i++)
 210                 if(c->tags[i] && seltag[i])
 211                         return True;
 212         return False;
 213 }
 214
 215 void
 216 resizemaster(Arg *arg) {
 217         if(arg->i == 0)
 218                 master = MASTER;
 219         else {
 220                 if(master + arg->i > 950 || master + arg->i < 50)
 221                         return;
 222                 master += arg->i;
 223         }
 224         arrange();
 225 }
 226
 227 void
 228 restack(void) {
 229         Client *c;
 230         XEvent ev;
 231
 232         if(!sel) {
 233                 drawstatus();
 234                 return;
 235         }
 236         if(sel->isfloat || arrange == dofloat) {
 237                 XRaiseWindow(dpy, sel->win);
 238                 XRaiseWindow(dpy, sel->twin);
 239         }
 240         if(arrange != dofloat) {
 241                 if(!sel->isfloat) {
 242                         XLowerWindow(dpy, sel->twin);
 243                         XLowerWindow(dpy, sel->win);
 244                 }
 245                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 246                         if(c == sel)
 247                                 continue;
 248                         XLowerWindow(dpy, c->twin);
 249                         XLowerWindow(dpy, c->win);
 250                 }
 251         }
 252         drawall();
 253         XSync(dpy, False);
 254         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 255 }
 256
 257 void
 258 togglefloat(Arg *arg) {
 259         if (!sel || arrange == dofloat)
 260                 return;
 261         sel->isfloat = !sel->isfloat;
 262         arrange();
 263 }
 264
 265 void
 266 togglemode(Arg *arg) {
 267         arrange = (arrange == dofloat) ? dotile : dofloat;
 268         if(sel)
 269                 arrange();
 270         else
 271                 drawstatus();
 272 }
 273
 274 void
 275 toggleview(Arg *arg) {
 276         unsigned int i;
 277
 278         seltag[arg->i] = !seltag[arg->i];
 279         for(i = 0; i < ntags && !seltag[i]; i++);
 280         if(i == ntags)
 281                 seltag[arg->i] = True; /* cannot toggle last view */
 282         arrange();
 283 }
 284
 285 void
 286 view(Arg *arg) {
 287         unsigned int i;
 288
 289         for(i = 0; i < ntags; i++)
 290                 seltag[i] = (arg->i == -1) ? True : False;
 291         if(arg->i >= 0 && arg->i < ntags)
 292                 seltag[arg->i] = True;
 293         arrange();
 294 }
 295
 296 void
 297 zoom(Arg *arg) {
 298         unsigned int n;
 299         Client *c;
 300
 301         if(!sel)
 302                 return;
 303         if(sel->isfloat || (arrange == dofloat)) {
 304                 togglemax(sel);
 305                 return;
 306         }
 307         for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
 308                 n++;
 309
 310         c = sel;
 311         if(arrange == dofloat)
 312                 return;
 313         else if(n <= nmaster)
 314                 pop(c);
 315         else if(ismaster(sel)) {
 316                 if(!(c = topofstack()))
 317                         return;
 318                 swap(c, sel);
 319                 c = sel;
 320         }
 321         else
 322                 pop(c);
 323
 324         focus(c);
 325         arrange();
 326 }