From e087e6a3fcbdddcc323985a06015519b9f179665 Mon Sep 17 00:00:00 2001
From: Ben Collerson <benc@benc.cc>
Date: Mon, 4 Dec 2023 13:06:19 +1000
Subject: [PATCH] unclutter

---
 config.def.h |  2 ++
 dwl.c        | 42 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/config.def.h b/config.def.h
index a8ed61d9..2e049f78 100644
--- a/config.def.h
+++ b/config.def.h
@@ -95,6 +95,8 @@ LIBINPUT_CONFIG_ACCEL_PROFILE_ADAPTIVE
 */
 static const enum libinput_config_accel_profile accel_profile = LIBINPUT_CONFIG_ACCEL_PROFILE_ADAPTIVE;
 static const double accel_speed = 0.0;
+static const int cursor_timeout = 5;
+
 /* You can choose between:
 LIBINPUT_CONFIG_TAP_MAP_LRM -- 1/2/3 finger tap maps to left/right/middle
 LIBINPUT_CONFIG_TAP_MAP_LMR -- 1/2/3 finger tap maps to left/middle/right
diff --git a/dwl.c b/dwl.c
index 4d19357f..23cb42e8 100644
--- a/dwl.c
+++ b/dwl.c
@@ -269,6 +269,8 @@ static void focusmon(const Arg *arg);
 static void focusstack(const Arg *arg);
 static Client *focustop(Monitor *m);
 static void fullscreennotify(struct wl_listener *listener, void *data);
+static void handlecursoractivity(bool restore_focus);
+static int hidecursor(void *data);
 static void handlesig(int signo);
 static void incnmaster(const Arg *arg);
 static void inputdevice(struct wl_listener *listener, void *data);
@@ -364,6 +366,8 @@ static struct wlr_cursor_shape_manager_v1 *cursor_shape_mgr;
 
 static struct wlr_cursor *cursor;
 static struct wlr_xcursor_manager *cursor_mgr;
+static struct wl_event_source *hide_source;
+static bool cursor_hidden = false;
 
 static struct wlr_scene_rect *root_bg;
 static struct wlr_session_lock_manager_v1 *session_lock_mgr;
@@ -540,6 +544,7 @@ axisnotify(struct wl_listener *listener, void *data)
 	 * for example when you move the scroll wheel. */
 	struct wlr_pointer_axis_event *event = data;
 	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+	handlecursoractivity(true);
 	/* TODO: allow usage of scroll whell for mousebindings, it can be implemented
 	 * checking the event's orientation and the delta of the event */
 	/* Notify the client with pointer focus of the axis event. */
@@ -558,6 +563,7 @@ buttonpress(struct wl_listener *listener, void *data)
 	const Button *b;
 
 	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+	handlecursoractivity(true);
 
 	switch (event->state) {
 	case WLR_BUTTON_PRESSED:
@@ -1311,6 +1317,29 @@ handlesig(int signo)
 	}
 }
 
+void
+handlecursoractivity(bool restore_focus)
+{
+	wl_event_source_timer_update(hide_source, cursor_timeout * 1000);
+	if (cursor_hidden) {
+		wlr_cursor_set_xcursor(cursor, cursor_mgr, "default");
+
+		cursor_hidden = false;
+		if (restore_focus)
+			motionnotify(0);
+	}
+}
+
+int
+hidecursor(void *data)
+{
+	wlr_cursor_unset_image(cursor);
+
+	wlr_seat_pointer_notify_clear_focus(seat);
+	cursor_hidden = true;
+	return 1;
+}
+
 void
 incnmaster(const Arg *arg)
 {
@@ -1613,6 +1642,7 @@ motionnotify(uint32_t time)
 	/* time is 0 in internal calls meant to restore pointer focus. */
 	if (time) {
 		wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+		handlecursoractivity(false);
 
 		/* Update selmon (even while dragging a window) */
 		if (sloppyfocus)
@@ -1791,7 +1821,10 @@ pointerfocus(Client *c, struct wlr_surface *surface, double sx, double sy,
 	/* Let the client know that the mouse cursor has entered one
 	 * of its surfaces, and make keyboard focus follow if desired.
 	 * wlroots makes this a no-op if surface is already focused */
-	wlr_seat_pointer_notify_enter(seat, surface, sx, sy);
+	/* Don't show the cursor when calling motionnotify(0) to restore pointer
+	 * focus. */
+	if (!cursor_hidden)
+		wlr_seat_pointer_notify_enter(seat, surface, sx, sy);
 	wlr_seat_pointer_notify_motion(seat, time, sx, sy);
 
 }
@@ -1994,6 +2027,7 @@ run(char *startup_cmd)
 	 * monitor when displayed here */
 	wlr_cursor_warp_closest(cursor, NULL, cursor->x, cursor->y);
 	wlr_cursor_set_xcursor(cursor, cursor_mgr, "default");
+	handlecursoractivity(false);
 
 	/* Run the Wayland event loop. This does not return until you exit the
 	 * compositor. Starting the backend rigged up all of the necessary event
@@ -2284,6 +2318,12 @@ setup(void)
 	xdg_decoration_mgr = wlr_xdg_decoration_manager_v1_create(dpy);
 	LISTEN_STATIC(&xdg_decoration_mgr->events.new_toplevel_decoration, createdecoration);
 
+	hide_source = wl_event_loop_add_timer(
+		wl_display_get_event_loop(dpy),
+		hidecursor,
+		cursor
+	);
+
 	/*
 	 * Creates a cursor, which is a wlroots utility for tracking the cursor
 	 * image shown on screen.
-- 
2.43.0