swallow: upgrading patch + fixing glitches

config.def.h

@@ -8,6 +8,9 @@ static const int corner_radius           = 10;
 static const unsigned int borderpx       = 1;   /* border pixel of windows */
 #endif // ROUNDED_CORNERS_PATCH
 static const unsigned int snap           = 32;  /* snap pixel */
+#if SWALLOW_PATCH
+static const int swallowfloating         = 0;   /* 1 means swallow floating windows by default */
+#endif // SWALLOW_PATCH
 #if VANITYGAPS_PATCH
 static const unsigned int gappih         = 20;  /* horiz inner gap between windows */
 static const unsigned int gappiv         = 10;  /* vert inner gap between windows */

dwm.c

@@ -732,6 +732,9 @@ applyrules(Client *c)
 	XClassHint ch = { NULL, NULL };
 
 	/* rule matching */
+	#if SWALLOW_PATCH
+	c->noswallow = -1;
+	#endif // SWALLOW_PATCH
 	c->isfloating = 0;
 	c->tags = 0;
 	XGetClassHint(dpy, c->win, &ch);
@@ -785,7 +788,10 @@ applyrules(Client *c)
 
 			#if SWITCHTAG_PATCH
 			#if SWALLOW_PATCH
-			if (r->switchtag && (c->noswallow || !termforwin(c)))
+			if (r->switchtag && (
+				c->noswallow > 0 ||
+				!termforwin(c) ||
+				!(c->isfloating && swallowfloating && c->noswallow < 0)))
 			#else
 			if (r->switchtag)
 			#endif // SWALLOW_PATCH
@@ -1173,7 +1179,6 @@ clientmessage(XEvent *e)
 				#endif // !FAKEFULLSCREEN_PATCH
 			)));
 			#endif // FAKEFULLSCREEN_CLIENT_PATCH
-		}
 	} else if (cme->message_type == netatom[NetActiveWindow]) {
 		#if FOCUSONNETACTIVE_PATCH
 		if (c->tags & c->mon->tagset[c->mon->seltags]) {
@@ -2125,6 +2130,8 @@ manage(Window w, XWindowAttributes *wa)
 		applyrules(c);
 		#if SWALLOW_PATCH
 		term = termforwin(c);
+		if (term)
+			c->mon = term->mon;
 		#endif // SWALLOW_PATCH
 	}
 
@@ -2209,7 +2216,6 @@ manage(Window w, XWindowAttributes *wa)
 	if (c->mon == selmon)
 		unfocus(selmon->sel, 0, c);
 	c->mon->sel = c;
-	arrange(c->mon);
 	#if BAR_WINTITLEACTIONS_PATCH
 	if (!HIDDEN(c))
 		XMapWindow(dpy, c->win);
@@ -2220,6 +2226,7 @@ manage(Window w, XWindowAttributes *wa)
 	if (term)
 		swallow(term, c);
 	#endif // SWALLOW_PATCH
+	arrange(c->mon);
 	focus(NULL);
 }
 
@@ -2792,6 +2799,10 @@ run(void)
 void
 scan(void)
 {
+	#if SWALLOW_PATCH
+	scanner = 1;
+	char swin[256];
+	#endif // SWALLOW_PATCH
 	unsigned int i, num;
 	Window d1, d2, *wins = NULL;
 	XWindowAttributes wa;
@@ -2808,6 +2819,10 @@ scan(void)
 			#endif // BAR_ANYBAR_PATCH
 			if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
 				manage(wins[i], &wa);
+			#if SWALLOW_PATCH
+			else if (gettextprop(wins[i], netatom[NetClientList], swin, sizeof swin))
+				manage(wins[i], &wa);
+			#endif // SWALLOW_PATCH
 		}
 		for (i = 0; i < num; i++) { /* now the transients */
 			if (!XGetWindowAttributes(dpy, wins[i], &wa))
@@ -2818,6 +2833,9 @@ scan(void)
 		}
 		XFree(wins);
 	}
+	#if SWALLOW_PATCH
+	scanner = 0;
+	#endif // SWALLOW_PATCH
 }
 
 void

patch/swallow.c

@@ -1,12 +1,17 @@
 #include <X11/Xlib-xcb.h>
 #include <xcb/res.h>
 
+static int scanner;
 static xcb_connection_t *xcon;
 
 void
 swallow(Client *p, Client *c)
 {
-	if (c->noswallow || c->isterminal)
+	Client *s;
+
+	if (c->noswallow > 0 || c->isterminal)
+		return;
+	if (c->noswallow < 0 && !swallowfloating && c->isfloating)
 		return;
 
 	detach(c);
@@ -21,9 +26,14 @@ swallow(Client *p, Client *c)
 	Window w = p->win;
 	p->win = c->win;
 	c->win = w;
+
+	XChangeProperty(dpy, c->win, netatom[NetClientList], XA_WINDOW, 32, PropModeReplace,
+		(unsigned char *) &(p->win), 1);
+
 	updatetitle(p);
+	s = scanner ? c : p;
+	XMoveResizeWindow(dpy, p->win, s->x, s->y, s->w, s->h);
 	arrange(p->mon);
-	XMoveResizeWindow(dpy, p->win, p->x, p->y, p->w, p->h);
 	configure(p);
 	updateclientlist();
 }
@@ -36,12 +46,17 @@ unswallow(Client *c)
 	free(c->swallowing);
 	c->swallowing = NULL;
 
+	XDeleteProperty(dpy, c->win, netatom[NetClientList]);
+
+	/* unfullscreen the client */
+	setfullscreen(c, 0);
 	updatetitle(c);
 	arrange(c->mon);
 	XMapWindow(dpy, c->win);
 	XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
-	configure(c);
 	setclientstate(c, NormalState);
+	focus(NULL);
+	arrange(c->mon);
 }
 
 pid_t
@@ -82,21 +97,25 @@ getparentprocess(pid_t p)
 {
 	unsigned int v = 0;
 
-#ifdef __linux__
+#if defined(__linux__)
 	FILE *f;
 	char buf[256];
 	snprintf(buf, sizeof(buf) - 1, "/proc/%u/stat", (unsigned)p);
 
 	if (!(f = fopen(buf, "r")))
-		return 0;
+		return (pid_t)0;
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wunused-result"
-	fscanf(f, "%*u %*s %*c %u", &v);
-#pragma GCC diagnostic pop
+	if (fscanf(f, "%*u %*s %*c %u", (unsigned *)&v) != 1)
+		v = (pid_t)0;
 	fclose(f);
-#endif /* __linux__ */
+#elif defined(__FreeBSD__)
+	struct kinfo_proc *proc = kinfo_getproc(p);
+	if (!proc)
+		return (pid_t)0;
 
+	v = proc->ki_ppid;
+	free(proc);
+#endif
 	return (pid_t)v;
 }
 

patch/swallow.h

@@ -1,5 +1,7 @@
 static pid_t getparentprocess(pid_t p);
 static int isdescprocess(pid_t p, pid_t c);
+static void swallow(Client *p, Client *c);
 static Client *swallowingclient(Window w);
 static Client *termforwin(const Client *c);
+static void unswallow(Client *c);
 static pid_t winpid(Window w);