From ac6074f4fdb8cc263c877f08e16a5805d3bb22d2 Mon Sep 17 00:00:00 2001
From: Guido Cella <guido@guidocella.xyz>
Date: Wed, 24 Jan 2024 22:47:50 +0100
Subject: implement the virtual pointer protocol

This is used by programs like warpd.
---
 dwl.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/dwl.c b/dwl.c
index 239f7d7..76ed8aa 100644
--- a/dwl.c
+++ b/dwl.c
@@ -47,6 +47,7 @@
 #include <wlr/types/wlr_subcompositor.h>
 #include <wlr/types/wlr_viewporter.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
+#include <wlr/types/wlr_virtual_pointer_v1.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include <wlr/types/wlr_xdg_activation_v1.h>
 #include <wlr/types/wlr_xdg_decoration_v1.h>
@@ -328,6 +329,7 @@ static void updatetitle(struct wl_listener *listener, void *data);
 static void urgent(struct wl_listener *listener, void *data);
 static void view(const Arg *arg);
 static void virtualkeyboard(struct wl_listener *listener, void *data);
+static void virtualpointer(struct wl_listener *listener, void *data);
 static Monitor *xytomon(double x, double y);
 static void xytonode(double x, double y, struct wlr_surface **psurface,
 		Client **pc, LayerSurface **pl, double *nx, double *ny);
@@ -361,6 +363,7 @@ static struct wlr_layer_shell_v1 *layer_shell;
 static struct wlr_output_manager_v1 *output_mgr;
 static struct wlr_gamma_control_manager_v1 *gamma_control_mgr;
 static struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard_mgr;
+static struct wlr_virtual_pointer_manager_v1 *virtual_pointer_mgr;
 static struct wlr_cursor_shape_manager_v1 *cursor_shape_mgr;
 
 static struct wlr_cursor *cursor;
@@ -2330,6 +2333,9 @@ setup(void)
 	LISTEN_STATIC(&backend->events.new_input, inputdevice);
 	virtual_keyboard_mgr = wlr_virtual_keyboard_manager_v1_create(dpy);
 	LISTEN_STATIC(&virtual_keyboard_mgr->events.new_virtual_keyboard, virtualkeyboard);
+	virtual_pointer_mgr = wlr_virtual_pointer_manager_v1_create(dpy);
+	LISTEN_STATIC(&virtual_pointer_mgr->events.new_virtual_pointer, virtualpointer);
+
 	seat = wlr_seat_create(dpy, "seat0");
 	LISTEN_STATIC(&seat->events.request_set_cursor, setcursor);
 	LISTEN_STATIC(&seat->events.request_set_selection, setsel);
@@ -2731,6 +2737,17 @@ virtualkeyboard(struct wl_listener *listener, void *data)
 	wlr_keyboard_group_add_keyboard(vkb_group.wlr_group, &keyboard->keyboard);
 }
 
+void
+virtualpointer(struct wl_listener *listener, void *data)
+{
+	struct wlr_virtual_pointer_v1_new_pointer_event *event = data;
+	struct wlr_pointer pointer = event->new_pointer->pointer;
+
+	wlr_cursor_attach_input_device(cursor, &pointer.base);
+	if (event->suggested_output)
+		wlr_cursor_map_input_to_output(cursor, &pointer.base, event->suggested_output);
+}
+
 Monitor *
 xytomon(double x, double y)
 {
-- 
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