feat: use signals to stop instead of xdg_toplevel.close (killactive)

src/wallpaper.c

@@ -8,6 +8,14 @@
 #include <unistd.h>
 #include <errno.h>
 #include <math.h>
+#include <signal.h>
+
+static volatile bool running = true;
+
+static void handle_signal(int sig) {
+    (void)sig;
+    running = false;
+}
 
 #define WIDTH  1920
 #define HEIGHT 1080
@@ -119,6 +127,9 @@ int main(void) {
     SetTargetFPS(60);
     SetExitKey(KEY_NULL);
 
+    signal(SIGTERM, handle_signal);
+    signal(SIGINT, handle_signal);
+
     // initialize hyprland socket path
     hyprland_socket_path = get_hyprland_socket_path();
 
@@ -153,7 +164,7 @@ int main(void) {
     int textureUnit = 1;
     SetShaderValue(shader, distanceFieldTexLoc, &textureUnit, SHADER_UNIFORM_INT);
 
-    while (!WindowShouldClose()) {
+    while (running) {
         int screenWidth = GetScreenWidth();
         int screenHeight = GetScreenHeight();