From 4e0318919dd726f485ea3a495ff0989f69f35630 Mon Sep 17 00:00:00 2001
From: Nicholas Noll <nbnoll@eml.cc>
Date: Sat, 6 Jun 2020 19:56:41 -0700
Subject: hand added swallow patch

---
 sys/cmd/dwm/client.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 104 insertions(+), 2 deletions(-)

(limited to 'sys/cmd/dwm/client.c')

diff --git a/sys/cmd/dwm/client.c b/sys/cmd/dwm/client.c
index d2ea972..1401677 100644
--- a/sys/cmd/dwm/client.c
+++ b/sys/cmd/dwm/client.c
@@ -11,7 +11,8 @@ applyrules(Client *c)
 
 	/* rule matching */
 	c->isfloating = 0;
-	c->tags = 0;
+	c->tags       = 0;
+    c->noswallow  = -1;
 	XGetClassHint(dpy, c->win, &ch);
 	class    = ch.res_class ? ch.res_class : broken;
 	instance = ch.res_name  ? ch.res_name  : broken;
@@ -22,8 +23,10 @@ applyrules(Client *c)
 		&& (!r->class || strstr(class, r->class))
 		&& (!r->instance || strstr(instance, r->instance)))
 		{
+            c->isterm     = r->isterm;
+            c->noswallow  = r->noswallow;
 			c->isfloating = r->isfloating;
-			c->tags |= r->tags;
+			c->tags      |= r->tags;
 			for (m = mons; m && m->num != r->monitor; m = m->next)
                 ;
 			if (m)
@@ -414,6 +417,60 @@ showhide(Client *c)
 	}
 }
 
+void
+swallow(Client *p, Client *c)
+{
+    Client *s;
+
+
+    if (c->noswallow > 0 || c->isterm)
+        return;
+    if (c->noswallow < 0 && !swallowfloating && c->isfloating)
+        return;
+
+    detach(c);
+    detachstack(c);
+
+    setclientstate(c, WithdrawnState);
+    XUnmapWindow(dpy, p->win);
+
+    p->swallowing = c;
+    c->mon = p->mon;
+
+    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);
+    configure(p);
+    updateclientlist();
+}
+
+Client *
+termof(Client *w)
+{
+	Client *c;
+	Monitor *m;
+
+	if (!w->pid || w->isterm)
+		return NULL;
+
+	for (m = mons; m; m = m->next) {
+		for (c = m->clients; c; c = c->next) {
+			if (c->isterm && !c->swallowing && c->pid && isdescendent(c->pid, w->pid))
+				return c;
+		}
+	}
+
+	return NULL;
+}
+
 void
 unfocus(Client *c, int setfocus)
 {
@@ -430,11 +487,28 @@ unfocus(Client *c, int setfocus)
 void
 unmanage(Client *c, int destroyed)
 {
+    Client *s;
 	Monitor *m = c->mon;
 	XWindowChanges wc;
 
+    if (c->swallowing) {
+        unswallow(c);
+        return;
+    }
+
+    s = swallowing(c->win);
+    if (s) {
+        free(s->swallowing);
+        s->swallowing = nil;
+        arrange(m);
+        focus(nil);
+        return;
+     }
+
+
 	detach(c);
 	detachstack(c);
+
 	if (!destroyed) {
 		wc.border_width = c->oldbw;
 		XGrabServer(dpy); /* avoid race conditions */
@@ -450,8 +524,36 @@ unmanage(Client *c, int destroyed)
 	focus(nil);
 	updateclientlist();
 	arrange(m);
+
+    if (!s) {
+        // arrange(m);
+        focus(nil);
+        updateclientlist();
+    }
+}
+
+void
+unswallow(Client *c)
+{
+	c->win = c->swallowing->win;
+
+	free(c->swallowing);
+	c->swallowing = nil;
+
+	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);
+	setclientstate(c, NormalState);
+	focus(nil);
+	arrange(c->mon);
 }
 
+
 void
 updatesizehints(Client *c)
 {
-- 
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