From 48765c3465a403a457b6c6916c34c2b431db42f5 Mon Sep 17 00:00:00 2001
From: Andri Yngvason <andri@yngvason.is>
Date: Sun, 12 May 2024 23:04:05 +0000
Subject: [PATCH] Implement ext-virtual-keyboard-v1

---
 include/sway/input/input-manager.h |  3 +++
 sway/input/input-manager.c         | 38 ++++++++++++++++++++++++++++++
 sway/input/keyboard.c              |  1 +
 3 files changed, 42 insertions(+)

diff --git a/include/sway/input/input-manager.h b/include/sway/input/input-manager.h
index 45c75199..b8d666c0 100644
--- a/include/sway/input/input-manager.h
+++ b/include/sway/input/input-manager.h
@@ -3,6 +3,7 @@
 #include <libinput.h>
 #include <wlr/types/wlr_keyboard_shortcuts_inhibit_v1.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
+#include <wlr/types/wlr_ext_virtual_keyboard_v1.h>
 #include <wlr/types/wlr_virtual_pointer_v1.h>
 #include <wlr/types/wlr_transient_seat_v1.h>
 #include "sway/server.h"
@@ -23,6 +24,7 @@ struct sway_input_manager {
 
 	struct wlr_keyboard_shortcuts_inhibit_manager_v1 *keyboard_shortcuts_inhibit;
 	struct wlr_virtual_keyboard_manager_v1 *virtual_keyboard;
+	struct wlr_ext_virtual_keyboard_manager_v1 *ext_virtual_keyboard;
 	struct wlr_virtual_pointer_manager_v1 *virtual_pointer;
 	struct wlr_pointer_gestures_v1 *pointer_gestures;
 	struct wlr_transient_seat_manager_v1 *transient_seat_manager;
@@ -32,6 +34,7 @@ struct sway_input_manager {
 	struct wl_listener inhibit_deactivate;
 	struct wl_listener keyboard_shortcuts_inhibit_new_inhibitor;
 	struct wl_listener virtual_keyboard_new;
+	struct wl_listener ext_virtual_keyboard_new;
 	struct wl_listener virtual_pointer_new;
 	struct wl_listener transient_seat_create;
 };
diff --git a/sway/input/input-manager.c b/sway/input/input-manager.c
index 248ca34e..8a29e0c4 100644
--- a/sway/input/input-manager.c
+++ b/sway/input/input-manager.c
@@ -8,6 +8,7 @@
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/types/wlr_keyboard_group.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
+#include <wlr/types/wlr_ext_virtual_keyboard_v1.h>
 #include <wlr/types/wlr_virtual_pointer_v1.h>
 #include "sway/config.h"
 #include "sway/input/cursor.h"
@@ -396,6 +397,37 @@ void handle_virtual_keyboard(struct wl_listener *listener, void *data) {
 	seat_add_device(seat, input_device);
 }
 
+void handle_ext_virtual_keyboard(struct wl_listener *listener, void *data) {
+	struct sway_input_manager *input_manager =
+		wl_container_of(listener, input_manager, ext_virtual_keyboard_new);
+	struct wlr_ext_virtual_keyboard_v1 *keyboard = data;
+	struct wlr_input_device *device = &keyboard->keyboard.base;
+
+	struct sway_seat *seat = keyboard->seat ?
+		input_manager_sway_seat_from_wlr_seat(keyboard->seat) :
+		input_manager_get_default_seat();
+
+	struct sway_input_device *input_device =
+		calloc(1, sizeof(struct sway_input_device));
+	if (!sway_assert(input_device, "could not allocate input device")) {
+		return;
+	}
+	device->data = input_device;
+
+	input_device->is_virtual = true;
+	input_device->wlr_device = device;
+	input_device->identifier = input_device_get_identifier(device);
+	wl_list_insert(&input_manager->devices, &input_device->link);
+
+	sway_log(SWAY_DEBUG, "adding virtual keyboard: '%s'",
+		input_device->identifier);
+
+	wl_signal_add(&device->events.destroy, &input_device->device_destroy);
+	input_device->device_destroy.notify = handle_device_destroy;
+
+	seat_add_device(seat, input_device);
+}
+
 void handle_virtual_pointer(struct wl_listener *listener, void *data) {
 	struct sway_input_manager *input_manager =
 		wl_container_of(listener, input_manager, virtual_pointer_new);
@@ -466,6 +498,12 @@ struct sway_input_manager *input_manager_create(struct sway_server *server) {
 		&input->virtual_keyboard_new);
 	input->virtual_keyboard_new.notify = handle_virtual_keyboard;
 
+	input->ext_virtual_keyboard = wlr_ext_virtual_keyboard_manager_v1_create(
+		server->wl_display);
+	wl_signal_add(&input->ext_virtual_keyboard->events.new_ext_virtual_keyboard,
+		&input->ext_virtual_keyboard_new);
+	input->ext_virtual_keyboard_new.notify = handle_ext_virtual_keyboard;
+
 	input->virtual_pointer = wlr_virtual_pointer_manager_v1_create(
 		server->wl_display
 	);
diff --git a/sway/input/keyboard.c b/sway/input/keyboard.c
index f74d0658..c4cffdec 100644
--- a/sway/input/keyboard.c
+++ b/sway/input/keyboard.c
@@ -382,6 +382,7 @@ static void update_keyboard_state(struct sway_keyboard *keyboard,
  * Returns NULL if the keyboard is not grabbed by an input method,
  * or if event is from virtual keyboard of the same client as grab.
  * TODO: see swaywm/wlroots#2322
+ * TODO: ext-virtual-keyboard-v1
  */
 static struct wlr_input_method_keyboard_grab_v2 *keyboard_get_im_grab(
 		struct sway_keyboard *keyboard) {