dwmc

Makefile

@@ -26,7 +26,7 @@ dwm: ${OBJ}
 	${CC} -o $@ ${OBJ} ${LDFLAGS}
 
 clean:
-	rm -f dwm ${OBJ} dwm-${VERSION}.tar.gz
+	rm -f dwm ${OBJ} dwm-${VERSION}.tar.gz config.h
 
 dist: clean
 	mkdir -p dwm-${VERSION}
@@ -38,7 +38,7 @@ dist: clean
 
 install: all
 	mkdir -p ${DESTDIR}${PREFIX}/bin
-	cp -f dwm ${DESTDIR}${PREFIX}/bin
+	cp -f dwm dwmc ${DESTDIR}${PREFIX}/bin
 	chmod 755 ${DESTDIR}${PREFIX}/bin/dwm
 	mkdir -p ${DESTDIR}${MANPREFIX}/man1
 	sed "s/VERSION/${VERSION}/g" < dwm.1 > ${DESTDIR}${MANPREFIX}/man1/dwm.1

config.def.h

@@ -145,3 +145,74 @@ static Button buttons[] = {
 	{ ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
 	{ ClkTagBar,            MODKEY,         Button3,        toggletag,      {0} },
 };
+
+void
+setlayoutex(const Arg *arg)
+{
+  setlayout(&((Arg) { .v = &layouts[arg->i] }));
+}
+
+void
+viewex(const Arg *arg)
+{
+  view(&((Arg) { .ui = 1 << arg->ui }));
+}
+
+void
+viewall(const Arg *arg)
+{
+  view(&((Arg){.ui = ~0}));
+}
+
+void
+toggleviewex(const Arg *arg)
+{
+  toggleview(&((Arg) { .ui = 1 << arg->ui }));
+}
+
+void
+tagex(const Arg *arg)
+{
+  tag(&((Arg) { .ui = 1 << arg->ui }));
+}
+
+void
+toggletagex(const Arg *arg)
+{
+  toggletag(&((Arg) { .ui = 1 << arg->ui }));
+}
+
+void
+tagall(const Arg *arg)
+{
+  tag(&((Arg){.ui = ~0}));
+}
+
+/* signal definitions */
+/* signum must be greater than 0 */
+/* trigger signals using `xsetroot -name "fsignal:<signame> [<type> <value>]"` */
+static Signal signals[] = {
+       /* signum           function */
+       { "focusstack",     focusstack },
+       { "setmfact",       setmfact },
+       { "togglebar",      togglebar },
+       { "incnmaster",     incnmaster },
+       { "togglefloating", togglefloating },
+       { "focusmon",       focusmon },
+       { "tagmon",         tagmon },
+       { "zoom",           zoom },
+       { "view",           view },
+       { "viewall",        viewall },
+       { "viewex",         viewex },
+       { "toggleview",     view },
+       { "toggleviewex",   toggleviewex },
+       { "tag",            tag },
+       { "tagall",         tagall },
+       { "tagex",          tagex },
+       { "toggletag",      tag },
+       { "toggletagex",    toggletagex },
+       { "killclient",     killclient },
+       { "quit",           quit },
+       { "setlayout",      setlayout },
+       { "setlayoutex",    setlayoutex },
+};

dwm.c

@@ -127,6 +127,11 @@ typedef struct {
 	const Arg arg;
 } Key;
 
+typedef struct {
+  const char * sig;
+  void (*func)(const Arg *);
+} Signal;
+
 typedef struct {
 	const char *symbol;
 	void (*arrange)(Monitor *);
@@ -178,6 +183,7 @@ static void arrangemon(Monitor *m);
 static void attach(Client *c);
 static void attachBelow(Client *c);
 static void attachstack(Client *c);
+static int fake_signal(void);
 static void buttonpress(XEvent *e);
 static void checkotherwm(void);
 static void cleanup(void);
@@ -1172,6 +1178,49 @@ keypress(XEvent *e)
 			keys[i].func(&(keys[i].arg));
 }
 
+int
+fake_signal(void)
+{
+       char fsignal[256];
+       char indicator[9] = "fsignal:";
+       char str_sig[50];
+       char param[16];
+       int i, len_str_sig, n, paramn;
+       size_t len_fsignal, len_indicator = strlen(indicator);
+       Arg arg;
+
+       // Get root name property
+       if (gettextprop(root, XA_WM_NAME, fsignal, sizeof(fsignal))) {
+               len_fsignal = strlen(fsignal);
+
+               // Check if this is indeed a fake signal
+               if (len_indicator > len_fsignal ? 0 : strncmp(indicator, fsignal, len_indicator) == 0) {
+                       paramn = sscanf(fsignal+len_indicator, "%s%n%s%n", str_sig, &len_str_sig, param, &n);
+
+                       if (paramn == 1) arg = (Arg) {0};
+                       else if (paramn > 2) return 1;
+                       else if (strncmp(param, "i", n - len_str_sig) == 0)
+                               sscanf(fsignal + len_indicator + n, "%i", &(arg.i));
+                       else if (strncmp(param, "ui", n - len_str_sig) == 0)
+                               sscanf(fsignal + len_indicator + n, "%u", &(arg.ui));
+                       else if (strncmp(param, "f", n - len_str_sig) == 0)
+                               sscanf(fsignal + len_indicator + n, "%f", &(arg.f));
+                       else return 1;
+
+                       // Check if a signal was found, and if so handle it
+                       for (i = 0; i < LENGTH(signals); i++)
+                               if (strncmp(str_sig, signals[i].sig, len_str_sig) == 0 && signals[i].func)
+                                       signals[i].func(&(arg));
+
+                       // A fake signal was sent
+                       return 1;
+               }
+       }
+
+       // No fake signal was sent, so proceed with update
+       return 0;
+}
+
 void
 killclient(const Arg *arg)
 {
@@ -1409,8 +1458,10 @@ propertynotify(XEvent *e)
 		resizebarwin(selmon);
 		updatesystray();
 	}
-	if ((ev->window == root) && (ev->atom == XA_WM_NAME))
+  if ((ev->window == root) && (ev->atom == XA_WM_NAME)) {
-		updatestatus();
+    if (!fake_signal())
+      updatestatus();
+  }
 	else if (ev->state == PropertyDelete)
 		return; /* ignore */
 	else if ((c = wintoclient(ev->window))) {

dwmc

@@ -0,0 +1,40 @@
+#!/usr/bin/env sh
+
+signal() {
+       xsetroot -name "fsignal:$*"
+}
+
+case $# in
+1)
+       case $1 in
+       setlayout | view | viewall | togglebar | togglefloating | zoom | killclient | quit)
+               signal $1
+               ;;
+       *)
+               echo "Unknown command or missing one argument."
+               exit 1
+               ;;
+       esac
+       ;;
+2)
+       case $1 in
+       view)
+               signal $1 ui $2
+               ;;
+       viewex | toggleviewex | tagex | toggletagex | setlayoutex | focusstack | incnmaster | focusmon | tagmon)
+               signal $1 i $2
+               ;;
+       setmfact)
+               signal $1 f $2
+               ;;
+       *)
+               echo "Unknown command or one too many arguments."
+               exit 1
+               ;;
+       esac
+       ;;
+*)
+       echo "Too many arguments."
+       exit 1
+       ;;
+esac