5 files changed, 66 insertions, 3 deletions

diff --git a/config.h b/config.h
index 8c4142a..2e95fc9 100644
--- a/config.h
+++ b/config.h
@@ -65,6 +65,7 @@ static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn()
 static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", normbgcolor, "-nf", normfgcolor, "-sb", selbordercolor, "-sf", selfgcolor, NULL };
 static const char *termcmd[]  = { "st", NULL };
 
+#include "movestack.c"
 static Key keys[] = {
 	/* modifier                     key        function        argument */
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
@@ -76,6 +77,8 @@ static Key keys[] = {
 	{ MODKEY,                       XK_d,      incnmaster,     {.i = -1 } },
 	{ MODKEY,                       XK_h,      setmfact,       {.f = -0.05} },
 	{ MODKEY,                       XK_l,      setmfact,       {.f = +0.05} },
+	{ MODKEY|ShiftMask,             XK_j,      movestack,      {.i = +1 } },
+	{ MODKEY|ShiftMask,             XK_k,      movestack,      {.i = -1 } },
 	{ MODKEY,                       XK_Return, zoom,           {0} },
 	{ MODKEY,                       XK_Tab,    view,           {0} },
 	{ MODKEY|ShiftMask,             XK_c,      killclient,     {0} },
diff --git a/dwm b/dwm
index 3bb161d..485e018 100755
--- a/dwm
+++ b/dwm
diff --git a/dwm.c b/dwm.c
index 74a567a..086f468 100644
--- a/dwm.c
+++ b/dwm.c
@@ -174,6 +174,7 @@ static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interac
 static void arrange(Monitor *m);
 static void arrangemon(Monitor *m);
 static void attach(Client *c);
+static void attachbottom(Client *c);
 static void attachstack(Client *c);
 static void buttonpress(XEvent *e);
 static void checkotherwm(void);
@@ -451,6 +452,15 @@ attach(Client *c)
 }
 
 void
+attachbottom(Client *c)
+{
+	Client **tc;
+	c->next = NULL;
+	for (tc = &c->mon->clients; *tc; tc = &(*tc)->next);
+	*tc = c;
+}
+
+void
 attachstack(Client *c)
 {
 	c->snext = c->mon->stack;
@@ -1196,13 +1206,15 @@ manage(Window w, XWindowAttributes *wa)
 	updatewindowtype(c);
 	updatesizehints(c);
 	updatewmhints(c);
+	c->x = c->mon->mx + (c->mon->mw - WIDTH(c)) / 2;
+	c->y = c->mon->my + (c->mon->mh - HEIGHT(c)) / 2;
 	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
 	grabbuttons(c, 0);
 	if (!c->isfloating)
 		c->isfloating = c->oldstate = trans != None || c->isfixed;
 	if (c->isfloating)
 		XRaiseWindow(dpy, c->win);
-	attach(c);
+	attachbottom(c);
 	attachstack(c);
 	XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
 		(unsigned char *) &(c->win), 1);
@@ -1560,7 +1572,7 @@ sendmon(Client *c, Monitor *m)
 	detachstack(c);
 	c->mon = m;
 	c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
-	attach(c);
+	attachbottom(c);
 	attachstack(c);
 	focus(NULL);
 	arrange(NULL);
@@ -2084,7 +2096,7 @@ updategeom(void)
 					m->clients = c->next;
 					detachstack(c);
 					c->mon = mons;
-					attach(c);
+					attachbottom(c);
 					attachstack(c);
 				}
 				if (m == selmon)
diff --git a/dwm.o b/dwm.o
index c21b83a..409d1f5 100644
--- a/dwm.o
+++ b/dwm.o
diff --git a/movestack.c b/movestack.c
new file mode 100644
index 0000000..520f4ae
--- /dev/null
+++ b/movestack.c
@@ -0,0 +1,48 @@
+void
+movestack(const Arg *arg) {
+	Client *c = NULL, *p = NULL, *pc = NULL, *i;
+
+	if(arg->i > 0) {
+		/* find the client after selmon->sel */
+		for(c = selmon->sel->next; c && (!ISVISIBLE(c) || c->isfloating); c = c->next);
+		if(!c)
+			for(c = selmon->clients; c && (!ISVISIBLE(c) || c->isfloating); c = c->next);
+
+	}
+	else {
+		/* find the client before selmon->sel */
+		for(i = selmon->clients; i != selmon->sel; i = i->next)
+			if(ISVISIBLE(i) && !i->isfloating)
+				c = i;
+		if(!c)
+			for(; i; i = i->next)
+				if(ISVISIBLE(i) && !i->isfloating)
+					c = i;
+	}
+	/* find the client before selmon->sel and c */
+	for(i = selmon->clients; i && (!p || !pc); i = i->next) {
+		if(i->next == selmon->sel)
+			p = i;
+		if(i->next == c)
+			pc = i;
+	}
+
+	/* swap c and selmon->sel selmon->clients in the selmon->clients list */
+	if(c && c != selmon->sel) {
+		Client *temp = selmon->sel->next==c?selmon->sel:selmon->sel->next;
+		selmon->sel->next = c->next==selmon->sel?c:c->next;
+		c->next = temp;
+
+		if(p && p != c)
+			p->next = c;
+		if(pc && pc != selmon->sel)
+			pc->next = selmon->sel;
+
+		if(selmon->sel == selmon->clients)
+			selmon->clients = c;
+		else if(c == selmon->clients)
+			selmon->clients = selmon->sel;
+
+		arrange(selmon);
+	}
+}
\ No newline at end of file