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