From 4ab53a41256c8f2eac4c003c43b798b6aa312919 Mon Sep 17 00:00:00 2001
From: wochap <gean.marroquin@gmail.com>
Date: Mon, 8 Apr 2024 11:39:18 -0500
Subject: [PATCH] implement virtual-pointer

---
 dwl.c | 49 +++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 39 insertions(+), 10 deletions(-)

diff --git a/dwl.c b/dwl.c
index ef27a1d..20840cd 100644
--- a/dwl.c
+++ b/dwl.c
@@ -46,6 +46,7 @@
 #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>
@@ -318,11 +319,13 @@ static void toggleview(const Arg *arg);
 static void unlocksession(struct wl_listener *listener, void *data);
 static void unmaplayersurfacenotify(struct wl_listener *listener, void *data);
 static void unmapnotify(struct wl_listener *listener, void *data);
+static void updatecapabilities(void);
 static void updatemons(struct wl_listener *listener, void *data);
 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);
@@ -357,6 +360,7 @@ 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_cursor_shape_manager_v1 *cursor_shape_mgr;
+static struct wlr_virtual_pointer_manager_v1 *virtual_pointer_mgr;
 
 static struct wlr_cursor *cursor;
 static struct wlr_xcursor_manager *cursor_mgr;
@@ -1338,7 +1342,6 @@ inputdevice(struct wl_listener *listener, void *data)
 	/* This event is raised by the backend when a new input device becomes
 	 * available. */
 	struct wlr_input_device *device = data;
-	uint32_t caps;
 
 	switch (device->type) {
 	case WLR_INPUT_DEVICE_KEYBOARD:
@@ -1351,15 +1354,8 @@ inputdevice(struct wl_listener *listener, void *data)
 		/* TODO handle other input device types */
 		break;
 	}
-
-	/* We need to let the wlr_seat know what our capabilities are, which is
-	 * communiciated to the client. In dwl we always have a cursor, even if
-	 * there are no pointer devices, so we always include that capability. */
-	/* TODO do we actually require a cursor? */
-	caps = WL_SEAT_CAPABILITY_POINTER;
-	if (!wl_list_empty(&keyboards))
-		caps |= WL_SEAT_CAPABILITY_KEYBOARD;
-	wlr_seat_set_capabilities(seat, caps);
+	
+	updatecapabilities();
 }
 
 int
@@ -2331,6 +2327,8 @@ 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);
@@ -2536,6 +2534,21 @@ unmapnotify(struct wl_listener *listener, void *data)
 	motionnotify(0);
 }
 
+void
+updatecapabilities(void)
+{
+	uint32_t caps;
+
+	/* We need to let the wlr_seat know what our capabilities are, which is
+	 * communicated to the client. In dwl we always have a cursor, even if
+	 * there are no pointer devices, so we always include that capability. */
+	/* TODO do we actually require a cursor? */
+	caps = WL_SEAT_CAPABILITY_POINTER;
+	if (!wl_list_empty(&keyboards))
+		caps |= WL_SEAT_CAPABILITY_KEYBOARD;
+	wlr_seat_set_capabilities(seat, caps);
+}
+
 void
 updatemons(struct wl_listener *listener, void *data)
 {
@@ -2674,6 +2687,22 @@ virtualkeyboard(struct wl_listener *listener, void *data)
 {
 	struct wlr_virtual_keyboard_v1 *keyboard = data;
 	createkeyboard(&keyboard->keyboard);
+	updatecapabilities();
+}
+
+void
+virtualpointer(struct wl_listener *listener, void *data)
+{
+	struct wlr_virtual_pointer_v1_new_pointer_event *event = data;
+	struct wlr_virtual_pointer_v1 *pointer = event->new_pointer;
+	struct wlr_input_device *device = &pointer->pointer.base;
+	createpointer(&pointer->pointer);
+	updatecapabilities();
+
+	if (event->suggested_output) {
+		wlr_cursor_map_input_to_output(cursor, device,
+			event->suggested_output);
+	}
 }
 
 Monitor *
-- 
2.43.2