Merge pull request #1368 from ascent12/x11_backend

X11 backend improvements

4 files changed, 288 insertions, 228 deletions

diff --git a/backend/x11/backend.c b/backend/x11/backend.c
index cd7986a0..38715631 100644
--- a/backend/x11/backend.c
+++ b/backend/x11/backend.c
@@ -1,25 +1,29 @@
 #define _POSIX_C_SOURCE 200112L
+
 #include <assert.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
+
+#include <wlr/config.h>
+
+#include <X11/Xlib-xcb.h>
 #include <wayland-server.h>
+#include <xcb/xcb.h>
+#include <xcb/xfixes.h>
+#include <xcb/xinput.h>
+
 #include <wlr/backend/interface.h>
 #include <wlr/backend/x11.h>
-#include <wlr/config.h>
 #include <wlr/interfaces/wlr_input_device.h>
 #include <wlr/interfaces/wlr_keyboard.h>
 #include <wlr/interfaces/wlr_pointer.h>
 #include <wlr/render/egl.h>
-#include <wlr/render/gles2.h>
+#include <wlr/render/wlr_renderer.h>
 #include <wlr/util/log.h>
-#include <X11/Xlib-xcb.h>
-#include <xcb/xcb.h>
-#if WLR_HAS_XCB_XKB
-#include <xcb/xkb.h>
-#endif
+
 #include "backend/x11.h"
 #include "util/signal.h"
 
@@ -36,8 +40,6 @@ struct wlr_x11_output *get_x11_output_from_window_id(
 
 static void handle_x11_event(struct wlr_x11_backend *x11,
 		xcb_generic_event_t *event) {
-	handle_x11_input_event(x11, event);
-
 	switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
 	case XCB_EXPOSE: {
 		xcb_expose_event_t *ev = (xcb_expose_event_t *)event;
@@ -69,6 +71,12 @@ static void handle_x11_event(struct wlr_x11_backend *x11,
 		}
 		break;
 	}
+	case XCB_GE_GENERIC: {
+		xcb_ge_generic_event_t *ev = (xcb_ge_generic_event_t *)event;
+		if (ev->extension == x11->xinput_opcode) {
+			handle_x11_xinput_event(x11, ev);
+		}
+	}
 	}
 }
 
@@ -81,7 +89,7 @@ static int x11_event(int fd, uint32_t mask, void *data) {
 	}
 
 	xcb_generic_event_t *e;
-	while ((e = xcb_poll_for_event(x11->xcb_conn))) {
+	while ((e = xcb_poll_for_event(x11->xcb))) {
 		handle_x11_event(x11, e);
 		free(e);
 	}
@@ -99,83 +107,6 @@ static bool backend_start(struct wlr_backend *backend) {
 	struct wlr_x11_backend *x11 = get_x11_backend_from_backend(backend);
 	x11->started = true;
 
-	struct {
-		const char *name;
-		xcb_intern_atom_cookie_t cookie;
-		xcb_atom_t *atom;
-	} atom[] = {
-		{
-			.name = "WM_PROTOCOLS",
-			.atom = &x11->atoms.wm_protocols,
-		},
-		{
-			.name = "WM_DELETE_WINDOW",
-			.atom = &x11->atoms.wm_delete_window,
-		},
-		{
-			.name = "_NET_WM_NAME",
-			.atom = &x11->atoms.net_wm_name,
-		},
-		{
-			.name = "UTF8_STRING",
-			.atom = &x11->atoms.utf8_string,
-		},
-	};
-
-	for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {
-		atom[i].cookie = xcb_intern_atom(x11->xcb_conn,
-			true, strlen(atom[i].name), atom[i].name);
-	}
-
-	for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {
-		xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(
-			x11->xcb_conn, atom[i].cookie, NULL);
-
-		if (reply) {
-			*atom[i].atom = reply->atom;
-			free(reply);
-		} else {
-			*atom[i].atom = XCB_ATOM_NONE;
-		}
-	}
-
-	// create a blank cursor
-	xcb_pixmap_t pix = xcb_generate_id(x11->xcb_conn);
-	xcb_create_pixmap(x11->xcb_conn, 1, pix, x11->screen->root, 1, 1);
-
-	x11->cursor = xcb_generate_id(x11->xcb_conn);
-	xcb_create_cursor(x11->xcb_conn, x11->cursor, pix, pix, 0, 0, 0, 0, 0, 0,
-		0, 0);
-	xcb_free_pixmap(x11->xcb_conn, pix);
-
-#if WLR_HAS_XCB_XKB
-		const xcb_query_extension_reply_t *reply =
-			xcb_get_extension_data(x11->xcb_conn, &xcb_xkb_id);
-		if (reply != NULL && reply->present) {
-			x11->xkb_base_event = reply->first_event;
-			x11->xkb_base_error = reply->first_error;
-
-			xcb_xkb_use_extension_cookie_t cookie = xcb_xkb_use_extension(
-				x11->xcb_conn, XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION);
-			xcb_xkb_use_extension_reply_t *reply =
-				xcb_xkb_use_extension_reply(x11->xcb_conn, cookie, NULL);
-			if (reply != NULL && reply->supported) {
-				x11->xkb_supported = true;
-
-				xcb_xkb_select_events(x11->xcb_conn,
-					XCB_XKB_ID_USE_CORE_KBD,
-					XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
-					0,
-					XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
-					0,
-					0,
-					0);
-
-				free(reply);
-			}
-		}
-#endif
-
 	wlr_signal_emit_safe(&x11->backend.events.new_input, &x11->keyboard_dev);
 
 	for (size_t i = 0; i < x11->requested_outputs; ++i) {
@@ -209,9 +140,6 @@ static void backend_destroy(struct wlr_backend *backend) {
 	wlr_renderer_destroy(x11->renderer);
 	wlr_egl_finish(&x11->egl);
 
-	if (x11->cursor) {
-		xcb_free_cursor(x11->xcb_conn, x11->cursor);
-	}
 	if (x11->xlib_conn) {
 		XCloseDisplay(x11->xlib_conn);
 	}
@@ -258,15 +186,82 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
 		goto error_x11;
 	}
 
-	x11->xcb_conn = XGetXCBConnection(x11->xlib_conn);
-	if (!x11->xcb_conn || xcb_connection_has_error(x11->xcb_conn)) {
+	x11->xcb = XGetXCBConnection(x11->xlib_conn);
+	if (!x11->xcb || xcb_connection_has_error(x11->xcb)) {
 		wlr_log(WLR_ERROR, "Failed to open xcb connection");
 		goto error_display;
 	}
 
 	XSetEventQueueOwner(x11->xlib_conn, XCBOwnsEventQueue);
 
-	int fd = xcb_get_file_descriptor(x11->xcb_conn);
+	struct {
+		const char *name;
+		xcb_intern_atom_cookie_t cookie;
+		xcb_atom_t *atom;
+	} atom[] = {
+		{ .name = "WM_PROTOCOLS", .atom = &x11->atoms.wm_protocols },
+		{ .name = "WM_DELETE_WINDOW", .atom = &x11->atoms.wm_delete_window },
+		{ .name = "_NET_WM_NAME", .atom = &x11->atoms.net_wm_name },
+		{ .name = "UTF8_STRING", .atom = &x11->atoms.utf8_string },
+	};
+
+	for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {
+		atom[i].cookie = xcb_intern_atom(x11->xcb,
+			true, strlen(atom[i].name), atom[i].name);
+	}
+
+	for (size_t i = 0; i < sizeof(atom) / sizeof(atom[0]); ++i) {
+		xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(
+			x11->xcb, atom[i].cookie, NULL);
+
+		if (reply) {
+			*atom[i].atom = reply->atom;
+			free(reply);
+		} else {
+			*atom[i].atom = XCB_ATOM_NONE;
+		}
+	}
+
+	const xcb_query_extension_reply_t *ext;
+
+	ext = xcb_get_extension_data(x11->xcb, &xcb_xfixes_id);
+	if (!ext || !ext->present) {
+		wlr_log(WLR_ERROR, "X11 does not support Xfixes extension");
+		goto error_display;
+	}
+
+	xcb_xfixes_query_version_cookie_t fixes_cookie =
+		xcb_xfixes_query_version(x11->xcb, 4, 0);
+	xcb_xfixes_query_version_reply_t *fixes_reply =
+		xcb_xfixes_query_version_reply(x11->xcb, fixes_cookie, NULL);
+
+	if (!fixes_reply || fixes_reply->major_version < 4) {
+		wlr_log(WLR_ERROR, "X11 does not support required Xfixes version");
+		free(fixes_reply);
+		goto error_display;
+	}
+	free(fixes_reply);
+
+	ext = xcb_get_extension_data(x11->xcb, &xcb_input_id);
+	if (!ext || !ext->present) {
+		wlr_log(WLR_ERROR, "X11 does not support Xinput extension");
+		goto error_display;
+	}
+	x11->xinput_opcode = ext->major_opcode;
+
+	xcb_input_xi_query_version_cookie_t xi_cookie =
+		xcb_input_xi_query_version(x11->xcb, 2, 0);
+	xcb_input_xi_query_version_reply_t *xi_reply =
+		xcb_input_xi_query_version_reply(x11->xcb, xi_cookie, NULL);
+
+	if (!xi_reply || xi_reply->major_version < 2) {
+		wlr_log(WLR_ERROR, "X11 does not support required Xinput version");
+		free(xi_reply);
+		goto error_display;
+	}
+	free(xi_reply);
+
+	int fd = xcb_get_file_descriptor(x11->xcb);
 	struct wl_event_loop *ev = wl_display_get_event_loop(display);
 	uint32_t events = WL_EVENT_READABLE | WL_EVENT_ERROR | WL_EVENT_HANGUP;
 	x11->event_source = wl_event_loop_add_fd(ev, fd, events, x11_event, x11);
@@ -276,7 +271,7 @@ struct wlr_backend *wlr_x11_backend_create(struct wl_display *display,
 	}
 	wl_event_source_check(x11->event_source);
 
-	x11->screen = xcb_setup_roots_iterator(xcb_get_setup(x11->xcb_conn)).data;
+	x11->screen = xcb_setup_roots_iterator(xcb_get_setup(x11->xcb)).data;
 
 	if (!create_renderer_func) {
 		create_renderer_func = wlr_renderer_autocreate;
diff --git a/backend/x11/input_device.c b/backend/x11/input_device.c
index 5b108ffb..a50f478a 100644
--- a/backend/x11/input_device.c
+++ b/backend/x11/input_device.c
@@ -1,140 +1,201 @@
 #include <stdlib.h>
+
 #include <wlr/config.h>
-#include <wlr/interfaces/wlr_input_device.h>
-#include <wlr/interfaces/wlr_keyboard.h>
-#include <wlr/interfaces/wlr_pointer.h>
-#include <wlr/util/log.h>
-#include <xcb/xcb.h>
+
 #ifdef __linux__
 #include <linux/input-event-codes.h>
 #elif __FreeBSD__
 #include <dev/evdev/input-event-codes.h>
 #endif
-#if WLR_HAS_XCB_XKB
-#include <xcb/xkb.h>
-#endif
+
+#include <xcb/xcb.h>
+#include <xcb/xfixes.h>
+#include <xcb/xinput.h>
+
+#include <wlr/interfaces/wlr_input_device.h>
+#include <wlr/interfaces/wlr_keyboard.h>
+#include <wlr/interfaces/wlr_pointer.h>
+#include <wlr/util/log.h>
+
 #include "backend/x11.h"
 #include "util/signal.h"
 
-static uint32_t xcb_button_to_wl(uint32_t button) {
-	switch (button) {
-	case XCB_BUTTON_INDEX_1: return BTN_LEFT;
-	case XCB_BUTTON_INDEX_2: return BTN_MIDDLE;
-	case XCB_BUTTON_INDEX_3: return BTN_RIGHT;
-	// XXX: I'm not sure the scroll-wheel direction is right
-	case XCB_BUTTON_INDEX_4: return BTN_GEAR_UP;
-	case XCB_BUTTON_INDEX_5: return BTN_GEAR_DOWN;
-	default: return 0;
-	}
+static void send_key_event(struct wlr_x11_backend *x11, uint32_t key,
+		enum wlr_key_state st, xcb_timestamp_t time) {
+	struct wlr_event_keyboard_key ev = {
+		.time_msec = time,
+		.keycode = key,
+		.state = st,
+		.update_state = true,
+	};
+	wlr_keyboard_notify_key(&x11->keyboard, &ev);
 }
 
-static void x11_handle_pointer_position(struct wlr_x11_output *output,
-		int16_t x, int16_t y, xcb_timestamp_t time) {
-	struct wlr_x11_backend *x11 = output->x11;
-	struct wlr_output *wlr_output = &output->wlr_output;
-	struct wlr_event_pointer_motion_absolute event = {
+static void send_button_event(struct wlr_x11_output *output, uint32_t key,
+		enum wlr_button_state st, xcb_timestamp_t time) {
+	struct wlr_event_pointer_button ev = {
+		.device = &output->pointer_dev,
+		.time_msec = time,
+		.button = key,
+		.state = st,
+	};
+	wlr_signal_emit_safe(&output->pointer.events.button, &ev);
+}
+
+static void send_axis_event(struct wlr_x11_output *output, int32_t delta,
+		xcb_timestamp_t time) {
+	struct wlr_event_pointer_axis ev = {
 		.device = &output->pointer_dev,
 		.time_msec = time,
-		.x = (double)x / wlr_output->width,
-		.y = (double)y / wlr_output->height,
+		.source = WLR_AXIS_SOURCE_WHEEL,
+		.orientation = WLR_AXIS_ORIENTATION_VERTICAL,
+		// 15 is a typical value libinput sends for one scroll
+		.delta = delta * 15,
+		.delta_discrete = delta,
 	};
-	wlr_signal_emit_safe(&output->pointer.events.motion_absolute, &event);
+	wlr_signal_emit_safe(&output->pointer.events.axis, &ev);
+}
 
-	x11->time = time;
+static void send_pointer_position_event(struct wlr_x11_output *output,
+		int16_t x, int16_t y, xcb_timestamp_t time) {
+	struct wlr_event_pointer_motion_absolute ev = {
+		.device = &output->pointer_dev,
+		.time_msec = time,
+		.x = (double)x / output->wlr_output.width,
+		.y = (double)y / output->wlr_output.height,
+	};
+	wlr_signal_emit_safe(&output->pointer.events.motion_absolute, &ev);
 }
 
-void handle_x11_input_event(struct wlr_x11_backend *x11,
-		xcb_generic_event_t *event) {
-	switch (event->response_type & XCB_EVENT_RESPONSE_TYPE_MASK) {
-	case XCB_KEY_PRESS:
-	case XCB_KEY_RELEASE: {
-		xcb_key_press_event_t *ev = (xcb_key_press_event_t *)event;
-		struct wlr_event_keyboard_key key = {
-			.time_msec = ev->time,
-			.keycode = ev->detail - 8,
-			.state = event->response_type == XCB_KEY_PRESS ?
-				WLR_KEY_PRESSED : WLR_KEY_RELEASED,
-			.update_state = true,
-		};
-
-		// TODO use xcb-xkb for more precise modifiers state?
-		wlr_keyboard_notify_key(&x11->keyboard, &key);
+void handle_x11_xinput_event(struct wlr_x11_backend *x11,
+		xcb_ge_generic_event_t *event) {
+	struct wlr_x11_output *output;
+
+	switch (event->event_type) {
+	case XCB_INPUT_KEY_PRESS: {
+		xcb_input_key_press_event_t *ev =
+			(xcb_input_key_press_event_t *)event;
+
+		wlr_keyboard_notify_modifiers(&x11->keyboard, ev->mods.base,
+			ev->mods.latched, ev->mods.locked, ev->mods.effective);
+		send_key_event(x11, ev->detail - 8, WLR_KEY_PRESSED, ev->time);
 		x11->time = ev->time;
-		return;
+		break;
 	}
-	case XCB_BUTTON_PRESS: {
-		xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
+	case XCB_INPUT_KEY_RELEASE: {
+		xcb_input_key_release_event_t *ev =
+			(xcb_input_key_release_event_t *)event;
 
-		struct wlr_x11_output *output =
-			get_x11_output_from_window_id(x11, ev->event);
-		if (output == NULL) {
-			break;
+		wlr_keyboard_notify_modifiers(&x11->keyboard, ev->mods.base,
+			ev->mods.latched, ev->mods.locked, ev->mods.effective);
+		send_key_event(x11, ev->detail - 8, WLR_KEY_RELEASED, ev->time);
+		x11->time = ev->time;
+		break;
+	}
+	case XCB_INPUT_BUTTON_PRESS: {
+		xcb_input_button_press_event_t *ev =
+			(xcb_input_button_press_event_t *)event;
+
+		output = get_x11_output_from_window_id(x11, ev->event);
+		if (!output) {
+			return;
 		}
 
-		if (ev->detail == XCB_BUTTON_INDEX_4 ||
-				ev->detail == XCB_BUTTON_INDEX_5) {
-			int32_t delta_discrete = ev->detail == XCB_BUTTON_INDEX_4 ? -1 : 1;
-			struct wlr_event_pointer_axis axis = {
-				.device = &output->pointer_dev,
-				.time_msec = ev->time,
-				.source = WLR_AXIS_SOURCE_WHEEL,
-				.orientation = WLR_AXIS_ORIENTATION_VERTICAL,
-				// 15 is a typical value libinput sends for one scroll
-				.delta = delta_discrete * 15,
-				.delta_discrete = delta_discrete,
-			};
-			wlr_signal_emit_safe(&output->pointer.events.axis, &axis);
-			x11->time = ev->time;
+		switch (ev->detail) {
+		case XCB_BUTTON_INDEX_1:
+			send_button_event(output, BTN_LEFT, WLR_BUTTON_PRESSED,
+				ev->time);
+			break;
+		case XCB_BUTTON_INDEX_2:
+			send_button_event(output, BTN_MIDDLE, WLR_BUTTON_PRESSED,
+				ev->time);
+			break;
+		case XCB_BUTTON_INDEX_3:
+			send_button_event(output, BTN_RIGHT, WLR_BUTTON_PRESSED,
+				ev->time);
+			break;
+		case XCB_BUTTON_INDEX_4:
+			send_axis_event(output, -1, ev->time);
+			break;
+		case XCB_BUTTON_INDEX_5:
+			send_axis_event(output, 1, ev->time);
 			break;
 		}
+
+		x11->time = ev->time;
+		break;
 	}
-	/* fallthrough */
-	case XCB_BUTTON_RELEASE: {
-		xcb_button_press_event_t *ev = (xcb_button_press_event_t *)event;
+	case XCB_INPUT_BUTTON_RELEASE: {
+		xcb_input_button_release_event_t *ev =
+			(xcb_input_button_release_event_t *)event;
 
-		struct wlr_x11_output *output =
-			get_x11_output_from_window_id(x11, ev->event);
-		if (output == NULL) {
+		output = get_x11_output_from_window_id(x11, ev->event);
+		if (!output) {
+			return;
+		}
+
+		switch (ev->detail) {
+		case XCB_BUTTON_INDEX_1:
+			send_button_event(output, BTN_LEFT, WLR_BUTTON_RELEASED,
+				ev->time);
+			break;
+		case XCB_BUTTON_INDEX_2:
+			send_button_event(output, BTN_MIDDLE, WLR_BUTTON_RELEASED,
+				ev->time);
+			break;
+		case XCB_BUTTON_INDEX_3:
+			send_button_event(output, BTN_RIGHT, WLR_BUTTON_RELEASED,
+				ev->time);
 			break;
 		}
 
-		if (ev->detail != XCB_BUTTON_INDEX_4 &&
-				ev->detail != XCB_BUTTON_INDEX_5) {
-			struct wlr_event_pointer_button button = {
-				.device = &output->pointer_dev,
-				.time_msec = ev->time,
-				.button = xcb_button_to_wl(ev->detail),
-				.state = event->response_type == XCB_BUTTON_PRESS ?
-					WLR_BUTTON_PRESSED : WLR_BUTTON_RELEASED,
-			};
-
-			wlr_signal_emit_safe(&output->pointer.events.button, &button);
+		x11->time = ev->time;
+		break;
+	}
+	case XCB_INPUT_MOTION: {
+		xcb_input_motion_event_t *ev = (xcb_input_motion_event_t *)event;
+
+		output = get_x11_output_from_window_id(x11, ev->event);
+		if (!output) {
+			return;
 		}
+
+		send_pointer_position_event(output, ev->event_x >> 16,
+			ev->event_y >> 16, ev->time);
 		x11->time = ev->time;
-		return;
+		break;
 	}
-	case XCB_MOTION_NOTIFY: {
-		xcb_motion_notify_event_t *ev = (xcb_motion_notify_event_t *)event;
+	case XCB_INPUT_ENTER: {
+		xcb_input_enter_event_t *ev = (xcb_input_enter_event_t *)event;
+
+		output = get_x11_output_from_window_id(x11, ev->event);
+		if (!output) {
+			return;
+		}
 
-		struct wlr_x11_output *output =
-			get_x11_output_from_window_id(x11, ev->event);
-		if (output != NULL) {
-			x11_handle_pointer_position(output, ev->event_x, ev->event_y, ev->time);
+		if (!output->cursor_hidden) {
+			xcb_xfixes_hide_cursor(x11->xcb, output->win);
+			xcb_flush(x11->xcb);
+			output->cursor_hidden = true;
 		}
-		return;
+		break;
 	}
-	default:
-#if WLR_HAS_XCB_XKB
-		if (x11->xkb_supported && event->response_type == x11->xkb_base_event) {
-			xcb_xkb_state_notify_event_t *ev =
-				(xcb_xkb_state_notify_event_t *)event;
-			wlr_keyboard_notify_modifiers(&x11->keyboard, ev->baseMods,
-				ev->latchedMods, ev->lockedMods, ev->lockedGroup);
+	case XCB_INPUT_LEAVE: {
+		xcb_input_leave_event_t *ev = (xcb_input_leave_event_t *)event;
+
+		output = get_x11_output_from_window_id(x11, ev->event);
+		if (!output) {
 			return;
 		}
-#endif
+
+		if (output->cursor_hidden) {
+			xcb_xfixes_show_cursor(x11->xcb, output->win);
+			xcb_flush(x11->xcb);
+			output->cursor_hidden = false;
+		}
 		break;
 	}
+	}
 }
 
 static void input_device_destroy(struct wlr_input_device *wlr_device) {
@@ -166,14 +227,14 @@ void update_x11_pointer_position(struct wlr_x11_output *output,
 	struct wlr_x11_backend *x11 = output->x11;
 
 	xcb_query_pointer_cookie_t cookie =
-		xcb_query_pointer(x11->xcb_conn, output->win);
+		xcb_query_pointer(x11->xcb, output->win);
 	xcb_query_pointer_reply_t *reply =
-		xcb_query_pointer_reply(x11->xcb_conn, cookie, NULL);
+		xcb_query_pointer_reply(x11->xcb, cookie, NULL);
 	if (!reply) {
 		return;
 	}
 
-	x11_handle_pointer_position(output, reply->win_x, reply->win_y, time);
+	send_pointer_position_event(output, reply->win_x, reply->win_y, time);
 
 	free(reply);
 }
diff --git a/backend/x11/meson.build b/backend/x11/meson.build
index fa51e3d7..19e873ab 100644
--- a/backend/x11/meson.build
+++ b/backend/x11/meson.build
@@ -1,10 +1,9 @@
 x11_libs = []
 x11_required = [
-	'xcb',
 	'x11-xcb',
-]
-x11_optional = [
-	'xcb-xkb',
+	'xcb',
+	'xcb-xinput',
+	'xcb-xfixes',
 ]
 
 foreach lib : x11_required
@@ -16,14 +15,6 @@ foreach lib : x11_required
 	x11_libs += dep
 endforeach
 
-foreach lib : x11_optional
-	dep = dependency(lib, required: get_option(lib))
-	if dep.found()
-		x11_libs += dep
-		conf_data.set10('WLR_HAS_' + lib.underscorify().to_upper(), true)
-	endif
-endforeach
-
 lib_wlr_backend_x11 = static_library(
 	'wlr_backend_x11',
 	files(
diff --git a/backend/x11/output.c b/backend/x11/output.c
index 1ac12a8d..6f98c590 100644
--- a/backend/x11/output.c
+++ b/backend/x11/output.c
@@ -1,10 +1,16 @@
 #define _POSIX_C_SOURCE 200809L
+
 #include <assert.h>
 #include <stdlib.h>
 #include <string.h>
+
+#include <xcb/xcb.h>
+#include <xcb/xinput.h>
+
 #include <wlr/interfaces/wlr_output.h>
 #include <wlr/interfaces/wlr_pointer.h>
 #include <wlr/util/log.h>
+
 #include "backend/x11.h"
 #include "util/signal.h"
 
@@ -16,8 +22,8 @@ static int signal_frame(void *data) {
 }
 
 static void parse_xcb_setup(struct wlr_output *output,
-		xcb_connection_t *xcb_conn) {
-	const xcb_setup_t *xcb_setup = xcb_get_setup(xcb_conn);
+		xcb_connection_t *xcb) {
+	const xcb_setup_t *xcb_setup = xcb_get_setup(xcb);
 
 	snprintf(output->make, sizeof(output->make), "%.*s",
 			xcb_setup_vendor_length(xcb_setup),
@@ -55,11 +61,11 @@ static bool output_set_custom_mode(struct wlr_output *wlr_output,
 
 	const uint32_t values[] = { width, height };
 	xcb_void_cookie_t cookie = xcb_configure_window_checked(
-		x11->xcb_conn, output->win,
+		x11->xcb, output->win,
 		XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
 
 	xcb_generic_error_t *error;
-	if ((error = xcb_request_check(x11->xcb_conn, cookie))) {
+	if ((error = xcb_request_check(x11->xcb, cookie))) {
 		wlr_log(WLR_ERROR, "Could not set window size to %dx%d\n",
 			width, height);
 		free(error);
@@ -84,8 +90,8 @@ static void output_destroy(struct wlr_output *wlr_output) {
 	wl_list_remove(&output->link);
 	wl_event_source_remove(output->frame_timer);
 	wlr_egl_destroy_surface(&x11->egl, output->surf);
-	xcb_destroy_window(x11->xcb_conn, output->win);
-	xcb_flush(x11->xcb_conn);
+	xcb_destroy_window(x11->xcb, output->win);
+	xcb_flush(x11->xcb);
 	free(output);
 }
 
@@ -142,21 +148,32 @@ struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
 
 	snprintf(wlr_output->name, sizeof(wlr_output->name), "X11-%d",
 		wl_list_length(&x11->outputs) + 1);
-	parse_xcb_setup(wlr_output, x11->xcb_conn);
+	parse_xcb_setup(wlr_output, x11->xcb);
 
 	uint32_t mask = XCB_CW_EVENT_MASK;
 	uint32_t values[] = {
-		XCB_EVENT_MASK_EXPOSURE |
-		XCB_EVENT_MASK_KEY_PRESS | XCB_EVENT_MASK_KEY_RELEASE |
-		XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE |
-		XCB_EVENT_MASK_POINTER_MOTION |
-		XCB_EVENT_MASK_STRUCTURE_NOTIFY
+		XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_STRUCTURE_NOTIFY
 	};
-	output->win = xcb_generate_id(x11->xcb_conn);
-	xcb_create_window(x11->xcb_conn, XCB_COPY_FROM_PARENT, output->win,
+	output->win = xcb_generate_id(x11->xcb);
+	xcb_create_window(x11->xcb, XCB_COPY_FROM_PARENT, output->win,
 		x11->screen->root, 0, 0, wlr_output->width, wlr_output->height, 1,
 		XCB_WINDOW_CLASS_INPUT_OUTPUT, x11->screen->root_visual, mask, values);
 
+	struct {
+		xcb_input_event_mask_t head;
+		xcb_input_xi_event_mask_t mask;
+	} xinput_mask = {
+		.head = { .deviceid = XCB_INPUT_DEVICE_ALL_MASTER, .mask_len = 1 },
+		.mask = XCB_INPUT_XI_EVENT_MASK_KEY_PRESS |
+			XCB_INPUT_XI_EVENT_MASK_KEY_RELEASE |
+			XCB_INPUT_XI_EVENT_MASK_BUTTON_PRESS |
+			XCB_INPUT_XI_EVENT_MASK_BUTTON_RELEASE |
+			XCB_INPUT_XI_EVENT_MASK_MOTION |
+			XCB_INPUT_XI_EVENT_MASK_ENTER |
+			XCB_INPUT_XI_EVENT_MASK_LEAVE,
+	};
+	xcb_input_xi_select_events(x11->xcb, output->win, 1, &xinput_mask.head);
+
 	output->surf = wlr_egl_create_surface(&x11->egl, &output->win);
 	if (!output->surf) {
 		wlr_log(WLR_ERROR, "Failed to create EGL surface");
@@ -164,23 +181,19 @@ struct wlr_output *wlr_x11_output_create(struct wlr_backend *backend) {
 		return NULL;
 	}
 
-	xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
+	xcb_change_property(x11->xcb, XCB_PROP_MODE_REPLACE, output->win,
 		x11->atoms.wm_protocols, XCB_ATOM_ATOM, 32, 1,
 		&x11->atoms.wm_delete_window);
 
 	char title[32];
 	if (snprintf(title, sizeof(title), "wlroots - %s", wlr_output->name)) {
-		xcb_change_property(x11->xcb_conn, XCB_PROP_MODE_REPLACE, output->win,
+		xcb_change_property(x11->xcb, XCB_PROP_MODE_REPLACE, output->win,
 			x11->atoms.net_wm_name, x11->atoms.utf8_string, 8,
 			strlen(title), title);
 	}
 
-	uint32_t cursor_values[] = { x11->cursor };
-	xcb_change_window_attributes(x11->xcb_conn, output->win, XCB_CW_CURSOR,
-		cursor_values);
-
-	xcb_map_window(x11->xcb_conn, output->win);
-	xcb_flush(x11->xcb_conn);
+	xcb_map_window(x11->xcb, output->win);
+	xcb_flush(x11->xcb);
 
 	struct wl_event_loop *ev = wl_display_get_event_loop(x11->wl_display);
 	output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output);