layout.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 unsigned int master = MASTER;
   7 unsigned int nmaster = NMASTER;
   8 unsigned int blw = 0;
   9 Layout *lt = NULL;
  10
  11 /* static */
  12
  13 static unsigned int nlayouts = 0;
  14
  15 static void
  16 tile(void) {
  17         unsigned int i, n, nx, ny, nw, nh, mw, mh, tw, th;
  18         Client *c;
  19
  20         for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
  21                 n++;
  22         /* window geoms */
  23         mh = (n > nmaster) ? wah / nmaster : wah / (n > 0 ? n : 1);
  24         mw = (n > nmaster) ? (waw * master) / 1000 : waw;
  25         th = (n > nmaster) ? wah / (n - nmaster) : 0;
  26         tw = waw - mw;
  27
  28         for(i = 0, c = clients; c; c = c->next)
  29                 if(isvisible(c)) {
  30                         if(c->isbanned)
  31                                 XMoveWindow(dpy, c->win, c->x, c->y);
  32                         c->isbanned = False;
  33                         if(c->isversatile)
  34                                 continue;
  35                         c->ismax = False;
  36                         nx = wax;
  37                         ny = way;
  38                         if(i < nmaster) {
  39                                 ny += i * mh;
  40                                 nw = mw - 2 * BORDERPX;
  41                                 nh = mh - 2 * BORDERPX;
  42                         }
  43                         else {  /* tile window */
  44                                 nx += mw;
  45                                 nw = tw - 2 * BORDERPX;
  46                                 if(th > 2 * BORDERPX) {
  47                                         ny += (i - nmaster) * th;
  48                                         nh = th - 2 * BORDERPX;
  49                                 }
  50                                 else /* fallback if th <= 2 * BORDERPX */
  51                                         nh = wah - 2 * BORDERPX;
  52                         }
  53                         resize(c, nx, ny, nw, nh, False);
  54                         i++;
  55                 }
  56                 else {
  57                         c->isbanned = True;
  58                         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
  59                 }
  60         if(!sel || !isvisible(sel)) {
  61                 for(c = stack; c && !isvisible(c); c = c->snext);
  62                 focus(c);
  63         }
  64         restack();
  65 }
  66
  67 LAYOUTS
  68
  69 /* extern */
  70
  71 void
  72 focusnext(Arg *arg) {
  73         Client *c;
  74
  75         if(!sel)
  76                 return;
  77         for(c = sel->next; c && !isvisible(c); c = c->next);
  78         if(!c)
  79                 for(c = clients; c && !isvisible(c); c = c->next);
  80         if(c) {
  81                 focus(c);
  82                 restack();
  83         }
  84 }
  85
  86 void
  87 focusprev(Arg *arg) {
  88         Client *c;
  89
  90         if(!sel)
  91                 return;
  92         for(c = sel->prev; c && !isvisible(c); c = c->prev);
  93         if(!c) {
  94                 for(c = clients; c && c->next; c = c->next);
  95                 for(; c && !isvisible(c); c = c->prev);
  96         }
  97         if(c) {
  98                 focus(c);
  99                 restack();
 100         }
 101 }
 102
 103 void
 104 incnmaster(Arg *arg) {
 105         if((lt->arrange != tile) || (nmaster + arg->i < 1)
 106         || (wah / (nmaster + arg->i) <= 2 * BORDERPX))
 107                 return;
 108         nmaster += arg->i;
 109         if(sel)
 110                 lt->arrange();
 111         else
 112                 drawstatus();
 113 }
 114
 115 void
 116 initlayouts(void) {
 117         unsigned int i, w;
 118
 119         lt = &layout[0];
 120         nlayouts = sizeof layout / sizeof layout[0];
 121         for(blw = i = 0; i < nlayouts; i++) {
 122                 w = textw(layout[i].symbol);
 123                 if(w > blw)
 124                         blw = w;
 125         }
 126 }
 127
 128 Client *
 129 nexttiled(Client *c) {
 130         for(; c && (c->isversatile || !isvisible(c)); c = c->next);
 131         return c;
 132 }
 133
 134 void
 135 resizemaster(Arg *arg) {
 136         if(lt->arrange != tile)
 137                 return;
 138         if(arg->i == 0)
 139                 master = MASTER;
 140         else {
 141                 if(waw * (master + arg->i) / 1000 >= waw - 2 * BORDERPX
 142                 || waw * (master + arg->i) / 1000 <= 2 * BORDERPX)
 143                         return;
 144                 master += arg->i;
 145         }
 146         lt->arrange();
 147 }
 148
 149 void
 150 restack(void) {
 151         Client *c;
 152         XEvent ev;
 153
 154         drawstatus();
 155         if(!sel)
 156                 return;
 157         if(sel->isversatile || lt->arrange == versatile)
 158                 XRaiseWindow(dpy, sel->win);
 159         if(lt->arrange != versatile) {
 160                 if(!sel->isversatile)
 161                         XLowerWindow(dpy, sel->win);
 162                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 163                         if(c == sel)
 164                                 continue;
 165                         XLowerWindow(dpy, c->win);
 166                 }
 167         }
 168         XSync(dpy, False);
 169         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 170 }
 171
 172 void
 173 setlayout(Arg *arg) {
 174         unsigned int i;
 175
 176         if(arg->i == -1) {
 177                 for(i = 0; i < nlayouts && lt != &layout[i]; i++);
 178                 if(i == nlayouts - 1)
 179                         lt = &layout[0];
 180                 else
 181                         lt = &layout[++i];
 182         }
 183         else {
 184                 if(arg->i < 0 || arg->i >= nlayouts)
 185                         return;
 186                 lt = &layout[arg->i];
 187         }
 188         if(sel)
 189                 lt->arrange();
 190         else
 191                 drawstatus();
 192 }
 193
 194 void
 195 versatile(void) {
 196         Client *c;
 197
 198         for(c = clients; c; c = c->next) {
 199                 if(isvisible(c)) {
 200                         if(c->isbanned)
 201                                 XMoveWindow(dpy, c->win, c->x, c->y);
 202                         c->isbanned = False;
 203                         resize(c, c->x, c->y, c->w, c->h, True);
 204                 }
 205                 else {
 206                         c->isbanned = True;
 207                         XMoveWindow(dpy, c->win, c->x + 2 * sw, c->y);
 208                 }
 209         }
 210         if(!sel || !isvisible(sel)) {
 211                 for(c = stack; c && !isvisible(c); c = c->snext);
 212                 focus(c);
 213         }
 214         restack();
 215 }