From ab0b7c8798f19fd45969590fbca421e0a526a72c Mon Sep 17 00:00:00 2001
From: BrunoCooper17 <BrunoCooper17@outlook.com>
Date: Sun, 14 Nov 2021 21:17:39 -0600
Subject: [PATCH] Add support to ignore transient window to avoid becoming floating

This fix issues working with Jetbrains applications and the UE4 Editor.

Also, not sure if needed but add the following for some java applications before launching dwm:
export _JAVA_AWT_WM_NONREPARENTING=1
export AWT_TOOLKIT=MToolkit
wmname LG3D

The real authors of this patch are Ar4m1d and bakkeby from reddit, I just put it
on a patch to share it to anyone who find it useful:
https://www.reddit.com/r/suckless/comments/k67tso/dwm_webstormjetbrains_webstorm_window_becomes/

---
 config.def.h |  6 +++---
 dwm.c        | 11 +++++++----
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/config.def.h b/config.def.h
index a2ac963..39e50a1 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   monitor   ignoretransient */
+	{ "Gimp",     NULL,       NULL,       0,            1,           -1,       0 },
+	{ "Firefox",  NULL,       NULL,       1 << 8,       0,           -1,       0 },
 };
 
 /* layout(s) */
diff --git a/dwm.c b/dwm.c
index 5e4d494..8313f96 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, isurgent, neverfocus, oldstate, isfullscreen, ignoretransient;
 	Client *next;
 	Client *snext;
 	Monitor *mon;
@@ -139,6 +139,7 @@ typedef struct {
 	unsigned int tags;
 	int isfloating;
 	int monitor;
+	int ignoretransient;
 } Rule;
 
 /* function declarations */
@@ -299,6 +300,7 @@ applyrules(Client *c)
 		&& (!r->instance || strstr(instance, r->instance)))
 		{
 			c->isfloating = r->isfloating;
+			c->ignoretransient = r->ignoretransient;
 			c->tags |= r->tags;
 			for (m = mons; m && m->num != r->monitor; m = m->next);
 			if (m)
@@ -1224,9 +1226,10 @@ propertynotify(XEvent *e)
 		switch(ev->atom) {
 		default: break;
 		case XA_WM_TRANSIENT_FOR:
-			if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
-				(c->isfloating = (wintoclient(trans)) != NULL))
-				arrange(c->mon);
+			if (!c->ignoretransient && !c->isfloating && 
+			(XGetTransientForHint(dpy, c->win, &trans)) && 
+			(c->isfloating = (wintoclient(trans)) != NULL))
+			    arrange(c->mon);
 			break;
 		case XA_WM_NORMAL_HINTS:
 			updatesizehints(c);
-- 
2.33.1