From ac272a754ef56b35f99db51d96eb2b6c5aced227 Mon Sep 17 00:00:00 2001
From: Midgard <midgard@zeus.ugent.be>
Date: Wed, 7 Sep 2022 21:50:25 +0200
Subject: [PATCH] Exit on click

---
 wl-overlay.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 61 insertions(+), 3 deletions(-)

diff --git a/wl-overlay.c b/wl-overlay.c
index a642c26..3da3ff7 100644
--- a/wl-overlay.c
+++ b/wl-overlay.c
@@ -117,14 +117,17 @@ struct user_request {
 struct client_state {
 	struct user_request user_request;
 	/* Globals */
-	struct wl_display *wl_display;
 	struct wl_registry *wl_registry;
+	struct wl_display *wl_display;
 	struct wl_shm *wl_shm;
 	struct wl_compositor *wl_compositor;
+	struct wl_seat *wl_seat;
 	/* Objects */
 	struct zwlr_layer_shell_v1 *layer_shell;
 	struct wl_surface *wl_surface;
 	struct zwlr_layer_surface_v1 *zwlr_surface;
+
+	bool stop;
 };
 
 static void
@@ -235,6 +238,7 @@ draw_frame(struct client_state *state, const int width, const int height)
 
 	munmap(data, size);
 	wl_buffer_add_listener(buffer, &wl_buffer_listener, NULL);
+
 	return buffer;
 }
 
@@ -255,6 +259,46 @@ static const struct zwlr_layer_surface_v1_listener zwlr_layer_surface_listener =
 	.configure = zwlr_layer_surface_configure,
 };
 
+static void
+wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
+		uint32_t serial, uint32_t time, uint32_t button, uint32_t button_state)
+{
+	struct client_state *state = data;
+	state->stop = true;
+}
+
+void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
+		uint32_t serial, struct wl_surface *surface, wl_fixed_t surface_x, wl_fixed_t surface_y) {}
+void wl_pointer_leave(void *data, struct wl_pointer *wl_pointer,
+		uint32_t serial, struct wl_surface *surface) {}
+void wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
+		uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {}
+void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
+		uint32_t time, uint32_t axis, wl_fixed_t value) {}
+void wl_pointer_frame(void *data, struct wl_pointer *wl_pointer) {}
+void wl_pointer_axis_source(void *data, struct wl_pointer *wl_pointer,
+		uint32_t axis_source) {}
+void wl_pointer_axis_stop(void *data, struct wl_pointer *wl_pointer,
+		uint32_t time, uint32_t axis) {}
+void wl_pointer_axis_discrete(void *data, struct wl_pointer *wl_pointer,
+		uint32_t axis, int32_t discrete) {}
+void wl_pointer_axis_value120(void *data, struct wl_pointer *wl_pointer,
+		uint32_t axis, int32_t value120) {}
+
+
+static const struct wl_pointer_listener wl_pointer_listener = {
+	.button        = wl_pointer_button,
+	.enter         = wl_pointer_enter,
+	.leave         = wl_pointer_leave,
+	.motion        = wl_pointer_motion,
+	.axis          = wl_pointer_axis,
+	.frame         = wl_pointer_frame,
+	.axis_source   = wl_pointer_axis_source,
+	.axis_stop     = wl_pointer_axis_stop,
+	.axis_discrete = wl_pointer_axis_discrete,
+	.axis_value120 = wl_pointer_axis_value120,
+};
+
 static void
 registry_global(void *data, struct wl_registry *wl_registry,
 		uint32_t name, const char *interface, uint32_t version)
@@ -270,7 +314,11 @@ registry_global(void *data, struct wl_registry *wl_registry,
 
 	} else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == STR_EQUAL) {
 		state->layer_shell = wl_registry_bind(
-			wl_registry, name, &zwlr_layer_shell_v1_interface, 1);
+				wl_registry, name, &zwlr_layer_shell_v1_interface, 1);
+
+	} else if (strcmp(interface, wl_seat_interface.name) == STR_EQUAL) {
+		state->wl_seat = wl_registry_bind(
+				wl_registry, name, &wl_seat_interface, 7);
 	}
 }
 
@@ -287,6 +335,8 @@ static const struct wl_registry_listener wl_registry_listener = {
 };
 
 
+
+
 static void
 parse_hex(char *hex, struct color_argb *result_color) {
 	if (strlen(hex) != 4 * 2) {
@@ -417,12 +467,20 @@ main(int argc, char *argv[])
 
 	zwlr_layer_surface_v1_add_listener(state.zwlr_surface, &zwlr_layer_surface_listener, &state);
 
+	struct wl_pointer *pointer = wl_seat_get_pointer(state.wl_seat);
+	wl_pointer_add_listener(pointer, &wl_pointer_listener, &state);
+
 	wl_surface_commit(state.wl_surface);
 
-	while (wl_display_dispatch(state.wl_display)) {
+	while (wl_display_dispatch(state.wl_display) && !state.stop) {
 		/* This space deliberately left blank */
 	}
 
+	if (state.wl_surface != NULL) {
+		wl_surface_destroy(state.wl_surface);
+		state.wl_surface = NULL;
+	}
+
 	free(state.user_request.graphics_filename);
 	if (state.user_request.text != NULL) {
 		free(state.user_request.text);