types/wlr_touch: add base wlr_input_device

wlr_touch now owns its wlr_input_device. It will be initialized when the
tablet tool is initialized, and finished when the touch is destroyed.

backend/libinput/touch.c

@@ -16,7 +16,10 @@ struct wlr_touch *create_libinput_touch(
 		wlr_log(WLR_ERROR, "Unable to allocate wlr_touch");
 		return NULL;
 	}
-	wlr_touch_init(wlr_touch, NULL);
+	const char *name = libinput_device_get_name(libinput_dev);
+	wlr_touch_init(wlr_touch, NULL, name);
+	wlr_touch->base.vendor = libinput_device_get_id_vendor(libinput_dev);
+	wlr_touch->base.product = libinput_device_get_id_product(libinput_dev);
 	return wlr_touch;
 }
 

backend/wayland/seat.c

@@ -819,7 +819,7 @@ void create_wl_touch(struct wlr_wl_seat *seat) {
 		wlr_input_device_destroy(wlr_dev);
 		return;
 	}
-	wlr_touch_init(wlr_dev->touch, NULL);
+	wlr_touch_init(wlr_dev->touch, NULL, wlr_dev->name);
 
 	wl_touch_add_listener(wl_touch, &touch_listener, dev);
 	wlr_signal_emit_safe(&seat->backend->backend.events.new_input, wlr_dev);

backend/x11/input_device.c

@@ -72,7 +72,7 @@ static void send_pointer_position_event(struct wlr_x11_output *output,
 static void send_touch_down_event(struct wlr_x11_output *output,
 		int16_t x, int16_t y, int32_t touch_id, xcb_timestamp_t time) {
 	struct wlr_event_touch_down ev = {
-		.device = &output->touch_dev,
+		.device = &output->touch.base,
 		.time_msec = time,
 		.x = (double)x / output->wlr_output.width,
 		.y = (double)y / output->wlr_output.height,
@@ -85,7 +85,7 @@ static void send_touch_down_event(struct wlr_x11_output *output,
 static void send_touch_motion_event(struct wlr_x11_output *output,
 		int16_t x, int16_t y, int32_t touch_id, xcb_timestamp_t time) {
 	struct wlr_event_touch_motion ev = {
-		.device = &output->touch_dev,
+		.device = &output->touch.base,
 		.time_msec = time,
 		.x = (double)x / output->wlr_output.width,
 		.y = (double)y / output->wlr_output.height,
@@ -98,7 +98,7 @@ static void send_touch_motion_event(struct wlr_x11_output *output,
 static void send_touch_up_event(struct wlr_x11_output *output,
 		int32_t touch_id, xcb_timestamp_t time) {
 	struct wlr_event_touch_up ev = {
-		.device = &output->touch_dev,
+		.device = &output->touch.base,
 		.time_msec = time,
 		.touch_id = touch_id,
 	};
@@ -341,6 +341,8 @@ bool wlr_input_device_is_x11(struct wlr_input_device *wlr_dev) {
 		return wlr_dev->keyboard->impl == &keyboard_impl;
 	case WLR_INPUT_DEVICE_POINTER:
 		return wlr_dev->pointer->impl == &pointer_impl;
+	case WLR_INPUT_DEVICE_TOUCH:
+		return wlr_dev->touch->impl == &touch_impl;
 	default:
 		return wlr_dev->impl == &input_device_impl;
 	}

backend/x11/output.c

@@ -77,7 +77,7 @@ static void output_destroy(struct wlr_output *wlr_output) {
 	pixman_region32_fini(&output->exposed);
 
 	wlr_pointer_destroy(&output->pointer);
-	wlr_input_device_destroy(&output->touch_dev);
+	wlr_touch_destroy(&output->touch);
 
 	struct wlr_x11_buffer *buffer, *buffer_tmp;
 	wl_list_for_each_safe(buffer, buffer_tmp, &output->buffers, link) {
@@ -576,16 +576,13 @@ struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
 	wlr_pointer_init(&output->pointer, &pointer_impl, "x11-pointer");
 	output->pointer.base.output_name = strdup(wlr_output->name);
 
-	wlr_input_device_init(&output->touch_dev, WLR_INPUT_DEVICE_TOUCH,
-		&input_device_impl, "X11 touch");
-	wlr_touch_init(&output->touch, &touch_impl);
-	output->touch_dev.touch = &output->touch;
-	output->touch_dev.output_name = strdup(wlr_output->name);
+	wlr_touch_init(&output->touch, &touch_impl, "x11-touch");
+	output->touch.base.output_name = strdup(wlr_output->name);
 	wl_list_init(&output->touchpoints);
 
 	wlr_signal_emit_safe(&x11->backend.events.new_output, wlr_output);
 	wlr_signal_emit_safe(&x11->backend.events.new_input, &output->pointer.base);
-	wlr_signal_emit_safe(&x11->backend.events.new_input, &output->touch_dev);
+	wlr_signal_emit_safe(&x11->backend.events.new_input, &output->touch.base);
 
 	// Start the rendering loop by requesting the compositor to render a frame
 	wlr_output_schedule_frame(wlr_output);

include/backend/x11.h

@@ -37,7 +37,6 @@ struct wlr_x11_output {
 	struct wlr_pointer pointer;
 
 	struct wlr_touch touch;
-	struct wlr_input_device touch_dev;
 	struct wl_list touchpoints; // wlr_x11_touchpoint::link
 
 	struct wl_list buffers; // wlr_x11_buffer::link

include/wlr/interfaces/wlr_touch.h

@@ -16,7 +16,7 @@ struct wlr_touch_impl {
 };
 
 void wlr_touch_init(struct wlr_touch *touch,
-		const struct wlr_touch_impl *impl);
+	const struct wlr_touch_impl *impl, const char *name);
 void wlr_touch_destroy(struct wlr_touch *touch);
 
 #endif

include/wlr/types/wlr_touch.h

@@ -10,11 +10,14 @@
 #define WLR_TYPES_WLR_TOUCH_H
 
 #include <stdint.h>
+#include <wlr/types/wlr_input_device.h>
 #include <wayland-server-core.h>
 
 struct wlr_touch_impl;
 
 struct wlr_touch {
+	struct wlr_input_device base;
+
 	const struct wlr_touch_impl *impl;
 
 	struct {

types/wlr_touch.c

@@ -1,11 +1,15 @@
 #include <stdlib.h>
 #include <string.h>
 #include <wayland-server-core.h>
+#include <wlr/interfaces/wlr_input_device.h>
 #include <wlr/interfaces/wlr_touch.h>
 #include <wlr/types/wlr_touch.h>
 
 void wlr_touch_init(struct wlr_touch *touch,
-		const struct wlr_touch_impl *impl) {
+		const struct wlr_touch_impl *impl, const char *name) {
+	wlr_input_device_init(&touch->base, WLR_INPUT_DEVICE_TOUCH, NULL, name);
+	touch->base.touch = touch;
+
 	touch->impl = impl;
 	wl_signal_init(&touch->events.down);
 	wl_signal_init(&touch->events.up);
@@ -15,6 +19,7 @@ void wlr_touch_init(struct wlr_touch *touch,
 }
 
 void wlr_touch_destroy(struct wlr_touch *touch) {
+	wlr_input_device_finish(&touch->base);
 	if (touch && touch->impl && touch->impl->destroy) {
 		touch->impl->destroy(touch);
 	} else {