From 52703a638f26cb9f022b8bf6964d6aaa066bd578 Mon Sep 17 00:00:00 2001
From: Daniel Jampen <daniel@jampen.net>
Date: Sun, 8 Feb 2026 17:56:26 +0100
Subject: [PATCH] support isfakefullscreen as windowrule property

---
 src/config/parse_config.h | 4 ++++
 src/mango.c               | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/src/config/parse_config.h b/src/config/parse_config.h
index 83d8877..5c3dcd0 100644
--- a/src/config/parse_config.h
+++ b/src/config/parse_config.h
@@ -58,6 +58,7 @@ typedef struct {
 	uint32_t tags;
 	int32_t isfloating;
 	int32_t isfullscreen;
+	int32_t isfakefullscreen;
 	float scroller_proportion;
 	const char *animation_type_open;
 	const char *animation_type_close;
@@ -1918,6 +1919,7 @@ bool parse_option(Config *config, char *key, char *value) {
 		// int32_t rule value, relay to a client property
 		rule->isfloating = -1;
 		rule->isfullscreen = -1;
+		rule->isfakefullscreen = -1;
 		rule->isnoborder = -1;
 		rule->isnoshadow = -1;
 		rule->isnoanimation = -1;
@@ -2054,6 +2056,8 @@ bool parse_option(Config *config, char *key, char *value) {
 					rule->scroller_proportion = atof(val);
 				} else if (strcmp(key, "isfullscreen") == 0) {
 					rule->isfullscreen = atoi(val);
+				} else if (strcmp(key, "isfakefullscreen") == 0) {
+					rule->isfakefullscreen = atoi(val);
 				} else if (strcmp(key, "globalkeybinding") == 0) {
 					char mod_str[256], keysym_str[256];
 					sscanf(val, "%255[^-]-%255[a-zA-Z]", mod_str, keysym_str);
diff --git a/src/mango.c b/src/mango.c
index a1bb258..3846ad8 100644
--- a/src/mango.c
+++ b/src/mango.c
@@ -1307,6 +1307,7 @@ static void apply_rule_properties(Client *c, const ConfigWinRule *r) {
 	APPLY_INT_PROP(c, r, no_force_center);
 	APPLY_INT_PROP(c, r, isfloating);
 	APPLY_INT_PROP(c, r, isfullscreen);
+	APPLY_INT_PROP(c, r, isfakefullscreen);
 	APPLY_INT_PROP(c, r, isnoborder);
 	APPLY_INT_PROP(c, r, isnoshadow);
 	APPLY_INT_PROP(c, r, isnoanimation);
@@ -1506,6 +1507,10 @@ void applyrules(Client *c) {
 
 	setfullscreen(c, fullscreen_state_backup);
 
+	if (c->isfakefullscreen) {
+		setfakefullscreen(c, 1);
+	}
+
 	/*
 	if there is a new non-floating window in the current tag, the fullscreen
 	window in the current tag will exit fullscreen and participate in tiling