From f709b1910af85d8ff2fdd5c38215c204f8bb34e7 Mon Sep 17 00:00:00 2001
From: Danil Demchenko <mail@d-demchenko.ru>
Date: Fri, 7 Feb 2020 00:11:53 +0300
Subject: [PATCH] Add  rule to remove the opportunity to focus certain windows.
 May be useful for tray applications.

---
 config.def.h |  6 +++---
 dwm.c        | 15 ++++++++++-----
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/config.def.h b/config.def.h
index 1c0b587..a4468eb 100644
--- a/config.def.h
+++ b/config.def.h
@@ -26,9 +26,9 @@ static const Rule rules[] = {
 	 *	WM_CLASS(STRING) = instance, class
 	 *	WM_NAME(STRING) = title
 	 */
-	/* class      instance    title       tags mask     isfloating   monitor */
-	{ "Gimp",     NULL,       NULL,       0,            1,           -1 },
-	{ "Firefox",  NULL,       NULL,       1 << 8,       0,           -1 },
+	/* class      instance    title       tags mask     isfloating canfocus   monitor */
+	{ "Gimp",     NULL,       NULL,       0,            1,         1,         -1 },
+	{ "Firefox",  NULL,       NULL,       1 << 8,       0,         1,         -1 },
 };
 
 /* layout(s) */
diff --git a/dwm.c b/dwm.c
index 4465af1..c678e90 100644
--- a/dwm.c
+++ b/dwm.c
@@ -92,7 +92,7 @@ struct Client {
 	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
 	int bw, oldbw;
 	unsigned int tags;
-	int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
+	int isfixed, isfloating, canfocus, isurgent, neverfocus, oldstate, isfullscreen;
 	Client *next;
 	Client *snext;
 	Monitor *mon;
@@ -138,6 +138,7 @@ typedef struct {
 	const char *title;
 	unsigned int tags;
 	int isfloating;
+    int canfocus;
 	int monitor;
 } Rule;
 
@@ -286,6 +287,7 @@ applyrules(Client *c)
 
 	/* rule matching */
 	c->isfloating = 0;
+    c->canfocus = 1;
 	c->tags = 0;
 	XGetClassHint(dpy, c->win, &ch);
 	class    = ch.res_class ? ch.res_class : broken;
@@ -298,6 +300,7 @@ applyrules(Client *c)
 		&& (!r->instance || strstr(instance, r->instance)))
 		{
 			c->isfloating = r->isfloating;
+            c->canfocus = r->canfocus;
 			c->tags |= r->tags;
 			for (m = mons; m && m->num != r->monitor; m = m->next);
 			if (m)
@@ -788,6 +791,8 @@ focus(Client *c)
 	if (selmon->sel && selmon->sel != c)
 		unfocus(selmon->sel, 0);
 	if (c) {
+        if (!c->canfocus)
+            return;
 		if (c->mon != selmon)
 			selmon = c->mon;
 		if (c->isurgent)
@@ -837,16 +842,16 @@ focusstack(const Arg *arg)
 	if (!selmon->sel)
 		return;
 	if (arg->i > 0) {
-		for (c = selmon->sel->next; c && !ISVISIBLE(c); c = c->next);
+		for (c = selmon->sel->next; c && (!ISVISIBLE(c) || !c->canfocus); c = c->next);
 		if (!c)
-			for (c = selmon->clients; c && !ISVISIBLE(c); c = c->next);
+			for (c = selmon->clients; c && (!ISVISIBLE(c) || !c->canfocus); c = c->next);
 	} else {
 		for (i = selmon->clients; i != selmon->sel; i = i->next)
-			if (ISVISIBLE(i))
+			if (ISVISIBLE(i) && i->canfocus)
 				c = i;
 		if (!c)
 			for (; i; i = i->next)
-				if (ISVISIBLE(i))
+				if (ISVISIBLE(i) && i->canfocus)
 					c = i;
 	}
 	if (c) {
-- 
2.25.0