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