layout.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include "dwm.h"
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include <X11/Xatom.h>
   6 #include <X11/Xutil.h>
   7
   8 /* static */
   9
  10 typedef struct {
  11         const char *symbol;
  12         void (*arrange)(void);
  13 } Layout;
  14
  15 unsigned int blw = 0;
  16 static char prop[128];
  17 static unsigned int ltidx = 0; /* default */
  18
  19 static void
  20 floating(void) { /* default floating layout */
  21         Client *c;
  22
  23         for(c = clients; c; c = c->next)
  24                 if(isvisible(c))
  25                         resize(c, c->x, c->y, c->w, c->h, True);
  26 }
  27
  28 static unsigned int nlayouts = 0;
  29
  30 LAYOUTS
  31
  32 /* extern */
  33
  34 void
  35 arrange(void) {
  36         Client *c;
  37
  38         for(c = clients; c; c = c->next)
  39                 if(isvisible(c))
  40                         unban(c);
  41                 else
  42                         ban(c);
  43         layouts[ltidx].arrange();
  44         focus(NULL);
  45         restack();
  46 }
  47
  48 void
  49 focusnext(const char *arg) {
  50         Client *c;
  51
  52         if(!sel)
  53                 return;
  54         for(c = sel->next; c && !isvisible(c); c = c->next);
  55         if(!c)
  56                 for(c = clients; c && !isvisible(c); c = c->next);
  57         if(c) {
  58                 focus(c);
  59                 restack();
  60         }
  61 }
  62
  63 void
  64 focusprev(const char *arg) {
  65         Client *c;
  66
  67         if(!sel)
  68                 return;
  69         for(c = sel->prev; c && !isvisible(c); c = c->prev);
  70         if(!c) {
  71                 for(c = clients; c && c->next; c = c->next);
  72                 for(; c && !isvisible(c); c = c->prev);
  73         }
  74         if(c) {
  75                 focus(c);
  76                 restack();
  77         }
  78 }
  79
  80 const char *
  81 getsymbol(void)
  82 {
  83         return layouts[ltidx].symbol;
  84 }
  85
  86 Bool
  87 isfloating(void) {
  88         return layouts[ltidx].arrange == floating;
  89 }
  90
  91 Bool
  92 isarrange(void (*func)())
  93 {
  94         return func == layouts[ltidx].arrange;
  95 }
  96
  97 void
  98 initlayouts(void) {
  99         unsigned int i, w;
 100
 101         /* TODO deserialize ltidx if present */
 102         nlayouts = sizeof layouts / sizeof layouts[0];
 103         for(blw = i = 0; i < nlayouts; i++) {
 104                 w = textw(layouts[i].symbol);
 105                 if(w > blw)
 106                         blw = w;
 107         }
 108 }
 109
 110 void
 111 loaddwmprops(void) {
 112         unsigned int i;
 113         XTextProperty name;
 114
 115         /* check if window has set a property */
 116         name.nitems = 0;
 117         XGetTextProperty(dpy, root, &name, dwmprops);
 118         if(name.nitems && name.encoding == XA_STRING) {
 119                 strncpy(prop, (char *)name.value, sizeof prop - 1);
 120                 prop[sizeof prop - 1] = '\0';
 121                 XFree(name.value);
 122                 for(i = 0; i < ntags && i < sizeof prop - 1 && prop[i] != '\0'; i++)
 123                         seltags[i] = prop[i] == '1';
 124                 if(i < sizeof prop - 1 && prop[i] != '\0') {
 125                         i = prop[i];
 126                         if(i < nlayouts)
 127                                 ltidx = i;
 128                 }
 129         }
 130 }
 131
 132 Client *
 133 nexttiled(Client *c) {
 134         for(; c && (c->isfloating || !isvisible(c)); c = c->next);
 135         return c;
 136 }
 137
 138 void
 139 restack(void) {
 140         Client *c;
 141         XEvent ev;
 142         XWindowChanges wc;
 143
 144         drawstatus();
 145         if(!sel)
 146                 return;
 147         if(sel->isfloating || isfloating())
 148                 XRaiseWindow(dpy, sel->win);
 149         if(!isfloating()) {
 150                 wc.stack_mode = Below;
 151                 wc.sibling = barwin;
 152                 if(!sel->isfloating) {
 153                         XConfigureWindow(dpy, sel->win, CWSibling | CWStackMode, &wc);
 154                         wc.sibling = sel->win;
 155                 }
 156                 for(c = nexttiled(clients); c; c = nexttiled(c->next)) {
 157                         if(c == sel)
 158                                 continue;
 159                         XConfigureWindow(dpy, c->win, CWSibling | CWStackMode, &wc);
 160                         wc.sibling = c->win;
 161                 }
 162         }
 163         XSync(dpy, False);
 164         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 165 }
 166
 167 void
 168 savedwmprops(void) {
 169         unsigned int i;
 170
 171         for(i = 0; i < ntags && i < sizeof prop - 1; i++)
 172                 prop[i] = seltags[i] ? '1' : '0';
 173         if(i < sizeof prop - 1)
 174                 prop[i++] = (char)ltidx;
 175         prop[i] = '\0';
 176         XChangeProperty(dpy, root, dwmprops, XA_STRING, 8,
 177                         PropModeReplace, (unsigned char *)prop, i);
 178 }
 179
 180 void
 181 setlayout(const char *arg) {
 182         int i;
 183
 184         if(!arg) {
 185                 if(++ltidx == nlayouts)
 186                         ltidx = 0;;
 187         }
 188         else {
 189                 i = atoi(arg);
 190                 if(i < 0 || i >= nlayouts)
 191                         return;
 192                 ltidx = i;
 193         }
 194         if(sel)
 195                 arrange();
 196         else
 197                 drawstatus();
 198         savedwmprops();
 199 }
 200
 201 void
 202 togglebar(const char *arg) {
 203         if(bpos == BarOff)
 204                 bpos = (BARPOS == BarOff) ? BarTop : BARPOS;
 205         else
 206                 bpos = BarOff;
 207         updatebarpos();
 208         arrange();
 209 }
 210
 211 void
 212 togglemax(const char *arg) {
 213         XEvent ev;
 214
 215         if(!sel || (!isfloating() && !sel->isfloating) || sel->isfixed)
 216                 return;
 217         if((sel->ismax = !sel->ismax)) {
 218                 sel->rx = sel->x;
 219                 sel->ry = sel->y;
 220                 sel->rw = sel->w;
 221                 sel->rh = sel->h;
 222                 resize(sel, wax, way, waw - 2 * sel->border, wah - 2 * sel->border, True);
 223         }
 224         else
 225                 resize(sel, sel->rx, sel->ry, sel->rw, sel->rh, True);
 226         drawstatus();
 227         while(XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 228 }