layout.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include "dwm.h"
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5
   6 unsigned int blw = 0;
   7 Layout *lt = NULL;
   8
   9 /* static */
  10
  11 static double ratio = RATIO;
  12 static unsigned int nlayouts = 0;
  13 static unsigned int nmaster = NMASTER;
  14
  15 static double /* simple pow() */
  16 spow(double x, double y)
  17 {
  18         if(y == 0)
  19                 return 1;
  20         while(--y)
  21                 x *= x;
  22         return x;
  23 }
  24
  25 static void
  26 tile(void) {
  27         double mscale = 0, tscale = 0, sum = 0;
  28         unsigned int i, n, nx, ny, nw, nh, mw, tw;
  29         Client *c;
  30
  31         for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next))
  32                 n++;
  33
  34         mw = (n <= nmaster) ? waw :  waw / (1 + ratio);
  35         tw = waw - mw;
  36
  37         if(n > 0) {
  38                 if(n < nmaster) {
  39                         for(i = 0; i < n; i++)
  40                                 sum += spow(ratio, i);
  41                         mscale = wah / sum;
  42                 }
  43                 else {
  44                         for(i = 0; i < nmaster; i++)
  45                                 sum += spow(ratio, i);
  46                         mscale = wah / sum;
  47                         for(sum = 0, i = 0; i < (n - nmaster); i++)
  48                                 sum += spow(ratio, i);
  49                         tscale = wah / sum;
  50                 }
  51         }
  52         nx = wax;
  53         ny = way;
  54         for(i = 0, c = clients; c; c = c->next)
  55                 if(isvisible(c)) {
  56                         unban(c);
  57                         if(c->isfloating)
  58                                 continue;
  59                         c->ismax = False;
  60                         if(i < nmaster) { /* master window */
  61                                 nw = mw - 2 * c->border;
  62                                 if(i + 1 == n || i + 1 == nmaster)
  63                                         nh = (way + wah) - ny - (2 * c->border);
  64                                 else
  65                                         nh = (mscale * spow(ratio, i)) - (2 * c->border);
  66                         }
  67                         else { /* tile window */
  68                                 if(i == nmaster) {
  69                                         ny = way;
  70                                         nx = wax + mw;
  71                                 }
  72                                 nw = tw - 2 * c->border;
  73                                 if(i + 1 == n)
  74                                         nh = (way + wah) - ny - (2 * c->border);
  75                                 else
  76                                         nh = (tscale * spow(ratio, i - nmaster)) - (2 * c->border);
  77                         }
  78                         if(nh < bh) {
  79                                 nh = bh;
  80                                 ny = way + wah - nh;
  81                         }
  82                         resize(c, nx, ny, nw, nh, False);
  83                         ny += nh;
  84                         i++;
  85                 }
  86                 else
  87                         ban(c);
  88         focus(NULL);
  89         restack();
  90 }
  91
  92 LAYOUTS
  93
  94 /* extern */
  95
  96 void
  97 floating(void) {
  98         Client *c;
  99
 100         for(c = clients; c; c = c->next)
 101                 if(isvisible(c)) {
 102                         unban(c);
 103                         resize(c, c->x, c->y, c->w, c->h, True);
 104                 }
 105                 else
 106                         ban(c);
 107         focus(NULL);
 108         restack();
 109 }
 110
 111 void
 112 focusclient(const char *arg) {
 113         Client *c;
 114
 115         if(!sel || !arg)
 116                 return;
 117         if(atoi(arg) < 0) {
 118                 for(c = sel->prev; c && !isvisible(c); c = c->prev);
 119                 if(!c) {
 120                         for(c = clients; c && c->next; c = c->next);
 121                         for(; c && !isvisible(c); c = c->prev);
 122                 }
 123         }
 124         else {
 125                 for(c = sel->next; c && !isvisible(c); c = c->next);
 126                 if(!c)
 127                         for(c = clients; c && !isvisible(c); c = c->next);
 128         }
 129         if(c) {
 130                 focus(c);
 131                 restack();
 132         }
 133 }
 134
 135 void
 136 incratio(const char *arg) {
 137         double delta;
 138
 139         if(lt->arrange != tile)
 140                 return;
 141         if(!arg)
 142                 ratio = RATIO;
 143         else {
 144                 if(1 == sscanf(arg, "%lf", &delta)) {
 145                         if(delta + ratio < .1 || delta + ratio > 1.9)
 146                                 return;
 147                         ratio += delta;
 148                 }
 149         }
 150         lt->arrange();
 151 }
 152
 153 void
 154 incnmaster(const char *arg) {
 155         int i;
 156
 157         if(!arg)
 158                 nmaster = NMASTER;
 159         else {
 160                 i = atoi(arg);
 161                 if((lt->arrange != tile) || (nmaster + i < 1)
 162                 || (wah / (nmaster + i) <= 2 * BORDERPX))
 163                         return;
 164                 nmaster += i;
 165         }
 166         if(sel)
 167                 lt->arrange();
 168         else
 169                 drawstatus();
 170 }
 171
 172 void
 173 initlayouts(void) {
 174         unsigned int i, w;
 175
 176         lt = &layout[0];
 177         nlayouts = sizeof layout / sizeof layout[0];
 178         for(blw = i = 0; i < nlayouts; i++) {
 179                 w = textw(layout[i].symbol);
 180                 if(w > blw)
 181                         blw = w;
 182         }
 183 }
 184
 185 Client *
 186 nexttiled(Client *c) {
 187         for(; c && (c->isfloating || !isvisible(c)); c = c->next);
 188         return c;
 189 }
 190
 191 void
 192 restack(void) {
 193         Client *c;
 194         XEvent ev;
 195         XWindowChanges wc;
 196
 197         drawstatus();
 198         if(!sel)
 199                 return;
 200         if(sel->isfloating || lt->arrange == floating)
 201                 XRaiseWindow(dpy, sel->win);
 202         if(lt->arrange != floating) {
 203                 wc.stack_mode = Below;
 204                 wc.sibling = barwin;
 205                 if(!sel->isfloating) {
 206                         XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
 207                         wc.sibling = sel->win;
 208                 }
 209                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 210                         if(c == sel)
 211                                 continue;
 212                         XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
 213                         wc.sibling = c->win;
 214                 }
 215         }
 216         XSync(dpy, False);
 217         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 218 }
 219
 220 void
 221 setlayout(const char *arg) {
 222         int i;
 223
 224         if(!arg) {
 225                 lt++;
 226                 if(lt == layout + nlayouts)
 227                         lt = layout;
 228         }
 229         else {
 230                 i = atoi(arg);
 231                 if(i < 0 || i >= nlayouts)
 232                         return;
 233                 lt = &layout[i];
 234         }
 235         if(sel)
 236                 lt->arrange();
 237         else
 238                 drawstatus();
 239 }
 240
 241 void
 242 togglebar(const char *arg) {
 243         if(bpos == BarOff)
 244                 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
 245         else
 246                 bpos = BarOff;
 247         updatebarpos();
 248         lt->arrange();
 249 }
 250
 251 void
 252 togglemax(const char *arg) {
 253         XEvent ev;
 254
 255         if(!sel || (lt->arrange != floating && !sel->isfloating) || sel->isfixed)
 256                 return;
 257         if((sel->ismax = !sel->ismax)) {
 258                 sel->rx = sel->x;
 259                 sel->ry = sel->y;
 260                 sel->rw = sel->w;
 261                 sel->rh = sel->h;
 262                 resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
 263         }
 264         else
 265                 resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
 266         drawstatus();
 267         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 268 }
 269
 270 void
 271 zoom(const char *arg) {
 272         Client *c;
 273
 274         if(!sel || lt->arrange == floating || sel->isfloating)
 275                 return;
 276         if((c = sel) == nexttiled(clients))
 277                 if(!(c = nexttiled(c->next)))
 278                         return;
 279         detach(c);
 280         attach(c);
 281         focus(c);
 282         lt->arrange();
 283 }