[dev][dwm] Patch - Keyboard layout switcher

Hello,

this is a little patch for dwm 5.8.2.
Patch adds to dwm functionality of keyboard layout manager: for every
open window now stored current layout. If you change the focused window,
the current keyboard layout also switched.

And sorry for my english :)

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--- dwm.c.orig 2011-01-09 20:06:56.000000000 +0300
+++ dwm.c 2011-03-26 23:25:58.626602821 +0300
@@ -39,6 +39,7 @@
 #ifdef XINERAMA
 #include <X11/extensions/Xinerama.h>
 #endif /* XINERAMA */
+#include <X11/XKBlib.h>
 
 /* macros */
 #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
@@ -93,6 +94,7 @@
         Client *snext;
         Monitor *mon;
         Window win;
+ int XkbGroup;
 };
 
 typedef struct {
@@ -800,6 +802,7 @@
                 unfocus(selmon->sel, True);
                 selmon = m;
         }
+ unfocus(selmon->sel, True);
         if((c = wintoclient(ev->window)))
                 focus(c);
         else
@@ -832,6 +835,7 @@
                 grabbuttons(c, True);
                 XSetWindowBorder(dpy, c->win, dc.sel[ColBorder]);
                 XSetInputFocus(dpy, c->win, RevertToPointerRoot,
CurrentTime);
+ XkbLockGroup(dpy, XkbUseCoreKbd, c->XkbGroup);
         }
         else
                 XSetInputFocus(dpy, root, RevertToPointerRoot,
CurrentTime); @@ -1103,6 +1107,7 @@
                 die("fatal: could not malloc() %u bytes\n", sizeof
(Client)); *c = cz;
         c->win = w;
+ c->XkbGroup = 0;
         updatetitle(c);
         if(XGetTransientForHint(dpy, w, &trans))
                 t = wintoclient(trans);
@@ -1708,12 +1713,17 @@
 
 void
 unfocus(Client *c, Bool setfocus) {
+ XkbStateRec state;
+
         if(!c)
                 return;
         grabbuttons(c, False);
         XSetWindowBorder(dpy, c->win, dc.norm[ColBorder]);
         if(setfocus)
                 XSetInputFocus(dpy, root, RevertToPointerRoot,
CurrentTime);
+
+ XkbGetState(dpy, XkbUseCoreKbd, &state);
+ c -> XkbGroup = state.group;
 }
 
 void

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-- 
Andrey 'Case' Merkulov <merao_AT_udm.ru>