From 7fb0771af631512715ee98315ac2382d1730b3d5 Mon Sep 17 00:00:00 2001
From: Jason Woofenden <jason@jasonwoof.com>
Date: Tue, 2 Dec 2014 12:17:33 -0500
Subject: [PATCH] slave deck almost done

---
 dwm.c |   74 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 72 insertions(+), 2 deletions(-)

diff --git a/dwm.c b/dwm.c
index b902b3b..d5eec04 100644
--- a/dwm.c
+++ b/dwm.c
@@ -210,6 +210,7 @@ static void sigchld(int unused);
 static void spawn(const Arg *arg);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
+static void jason_layout(Monitor *);
 static void tile(Monitor *);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
@@ -272,8 +273,10 @@ static Window root;
 
 // unfocused windows get transparent (feature)
 static const unsigned long unfocused_opacity[] = { 0xbfffffff };
+static const unsigned long invisible_opacity[] = { 0x00000000 };
 static void window_set_opaque(Client *c);
 static void window_set_translucent(Client *c);
+static void window_set_invisible(Client *c);
 void
 window_set_opaque(Client *c) {
 	XDeleteProperty(dpy, c->win, netatom[NetWMWindowOpacity]);
@@ -282,6 +285,10 @@ void
 window_set_translucent(Client *c) {
 	XChangeProperty(dpy, c->win, netatom[NetWMWindowOpacity], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)unfocused_opacity, 1);
 }
+void
+window_set_invisible(Client *c) {
+	XChangeProperty(dpy, c->win, netatom[NetWMWindowOpacity], XA_CARDINAL, 32, PropModeReplace, (unsigned char *)invisible_opacity, 1);
+}
 
 
 /* configuration, allows nested code to access above variables */
@@ -1709,6 +1716,47 @@ tile(Monitor *m) {
 }
 
 void
+jason_layout(Monitor *m) {
+	unsigned int i, n, mw;
+	Client *c, *vis_slave;
+
+	for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+	if(n == 0) {
+		return;
+	}
+
+	c = nexttiled(m->clients);
+	if (c == m->sel) {
+		// if master is selected, show first slave
+		vis_slave = nexttiled(c->next);
+	} else {
+		vis_slave = m->sel;
+	}
+	if(n > 1 || (n == 1 && !c->screen_hog)) {
+		mw = m->ww * m->mfact;
+	} else {
+		// one of these:
+		// * zero tiled windows
+		// * one tiled window that's not a screen hog
+		// * miltiple tiled windows
+		mw = m->ww;
+	}
+	for (i = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++) {
+		if (i == 0) {
+			resize(c, m->wx, m->wy, mw, m->wh, False);
+		} else {
+			if (c == vis_slave) {
+				resize(c, m->wx + mw, m->wy, m->ww - mw, m->wh, False);
+			} else {
+				// this function does not get called when focus changes
+				// resize(c, m->wx + m->ww, m->wy, m->ww - mw, m->wh, False);
+				resize(c, m->wx + mw, m->wy, m->ww - mw, m->wh, False);
+			}
+		}
+	}
+}
+
+void
 togglebar(const Arg *arg) {
 	selmon->showbar = !selmon->showbar;
 	updatebarpos(selmon);
@@ -1756,10 +1804,32 @@ toggleview(const Arg *arg) {
 
 void
 unfocus(Client *c, Bool setfocus) {
+	Client *w;
 	if(!c)
 		return;
-	if(!root || c->win!=root)
-		window_set_translucent(c);
+	if(!root || c->win!=root) {
+		w = nexttiled(c->mon->clients);
+		if (!w) {
+			// no tiled windows
+			window_set_translucent(c);
+		} else if (w == c) {
+			// master
+			window_set_translucent(c);
+		} else {
+			w = nexttiled(w->next);
+			if (!w) {
+				// c must not be tiled
+				window_set_translucent(c);
+			} else {
+				if (w == c) { // first slave
+					window_set_translucent(c);
+				} else {
+					window_set_invisible(c);
+					window_set_translucent(w);
+				}
+			}
+		}
+	}
 	grabbuttons(c, False);
 	XSetWindowBorder(dpy, c->win, scheme[SchemeNorm].border->rgb);
 	if(setfocus) {
-- 
1.7.10.4