layoutscroll patch

1 files changed, 22 insertions, 0 deletions

diff --git a/dwm.c b/dwm.c
index 405b49f..331c78b 100644
--- a/dwm.c
+++ b/dwm.c
@@ -148,6 +148,7 @@ struct Monitor {
 	Monitor *next;
 	Window barwin;
 	const Layout *lt[2];
+	int ltcur; /* current layout */
 	Pertag *pertag;
 };
 
@@ -220,6 +221,7 @@ static void sendmon(Client *c, Monitor *m);
 static void setclientstate(Client *c, long state);
 static void setfocus(Client *c);
 static void setfullscreen(Client *c, int fullscreen);
+static void layoutscroll(const Arg *arg);
 static void setgaps(const Arg *arg);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
@@ -675,6 +677,7 @@ createmon(void)
 	m->nmaster = nmaster;
 	m->showbar = showbar;
 	m->topbar = topbar;
+	m->ltcur = 0;
 	m->gappx = gappx;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
@@ -1601,6 +1604,25 @@ setgaps(const Arg *arg)
 }
 
 void
+layoutscroll(const Arg *arg)
+{
+	if (!arg || !arg->i)
+		return;
+	int switchto = selmon->ltcur + arg->i;
+	int l = LENGTH(layouts);
+
+	if (switchto == l)
+		switchto = 0;
+	else if(switchto < 0)
+		switchto = l - 1;
+
+	selmon->ltcur = switchto;
+	Arg arg2 = {.v= &layouts[switchto] };
+	setlayout(&arg2);
+
+}
+
+void
 setlayout(const Arg *arg)
 {
 	if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])