From d2b48791c8466d130dd2a4cdd6c3e032a52c666d Mon Sep 17 00:00:00 2001
From: NishiOwO <nishi@nishi.boats>
Date: Wed, 17 Dec 2025 02:42:44 +0900
Subject: [PATCH] handle signal

---
 milkwm/main.c   |  8 ++++++++
 milkwm/milkwm.h |  3 +++
 milkwm/wm.c     | 10 +++++++++-
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/milkwm/main.c b/milkwm/main.c
index c61f9ca..7b02762 100644
--- a/milkwm/main.c
+++ b/milkwm/main.c
@@ -1,5 +1,11 @@
 #include "milkwm.h"
 
+void rehash(int sig) {
+	pthread_mutex_lock(&xmutex);
+	wm_rehash = 1;
+	pthread_mutex_unlock(&xmutex);
+}
+
 int main() {
 	int st;
 
@@ -8,5 +14,7 @@ int main() {
 
 	if((st = init_x()) != 0) return st;
 
+	signal(SIGHUP, rehash);
+
 	loop_wm();
 }
diff --git a/milkwm/milkwm.h b/milkwm/milkwm.h
index 655d786..86be72d 100644
--- a/milkwm/milkwm.h
+++ b/milkwm/milkwm.h
@@ -18,6 +18,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <pthread.h>
+#include <signal.h>
 
 #define TitleBarHeight 16
 #define Gap 1
@@ -30,9 +31,11 @@ extern Display*	       xdisplay;
 int  init_x(void);
 void loop_x(void);
 void set_focus_x(MwWidget widget);
+void set_background_x(void);
 
 /* wm.c */
 extern MwWidget root;
+extern int	wm_rehash;
 
 void	 loop_wm(void);
 MwWidget wm_frame(int w, int h);
diff --git a/milkwm/wm.c b/milkwm/wm.c
index 5b55270..b3c2a5a 100644
--- a/milkwm/wm.c
+++ b/milkwm/wm.c
@@ -3,7 +3,8 @@
 
 #include <stb_ds.h>
 
-MwWidget root = NULL;
+MwWidget root	   = NULL;
+int	 wm_rehash = 0;
 
 typedef struct wmframe {
 	MwWidget inside;
@@ -42,6 +43,13 @@ void loop_wm(void) {
 		int s = 0;
 
 		pthread_mutex_lock(&xmutex);
+		if(wm_rehash) {
+			wm_config_init();
+			wm_config_read();
+			set_background_x();
+			wm_rehash = 0;
+		}
+
 		while(MwPending(root)) {
 			if((s = MwStep(root)) != 0) break;
 		}