Merge branch 'master' into modifier-fixes

backend/backend.c

@@ -53,7 +53,7 @@ struct wlr_egl *wlr_backend_get_egl(struct wlr_backend *backend) {
 }
 
 static struct wlr_backend *attempt_wl_backend(struct wl_display *display) {
-	struct wlr_backend *backend = wlr_wl_backend_create(display);
+	struct wlr_backend *backend = wlr_wl_backend_create(display, NULL);
 	if (backend) {
 		int outputs = 1;
 		const char *_outputs = getenv("WLR_WL_OUTPUTS");

backend/drm/atomic.c

@@ -33,7 +33,6 @@ static bool atomic_end(int drm_fd, struct atomic *atom) {
 	}
 
 	uint32_t flags = DRM_MODE_ATOMIC_TEST_ONLY | DRM_MODE_ATOMIC_NONBLOCK;
-
 	if (drmModeAtomicCommit(drm_fd, atom->req, flags, NULL)) {
 		wlr_log_errno(L_ERROR, "Atomic test failed");
 		drmModeAtomicSetCursor(atom->req, atom->cursor);
@@ -44,13 +43,11 @@ static bool atomic_end(int drm_fd, struct atomic *atom) {
 }
 
 static bool atomic_commit(int drm_fd, struct atomic *atom,
-		struct wlr_drm_connector *conn, uint32_t flag, bool modeset) {
+		struct wlr_drm_connector *conn, uint32_t flags, bool modeset) {
 	if (atom->failed) {
 		return false;
 	}
 
-	uint32_t flags = DRM_MODE_PAGE_FLIP_EVENT | flag;
-
 	int ret = drmModeAtomicCommit(drm_fd, atom->req, flags, conn);
 	if (ret) {
 		wlr_log_errno(L_ERROR, "%s: Atomic commit failed (%s)",
@@ -59,7 +56,8 @@ static bool atomic_commit(int drm_fd, struct atomic *atom,
 		// Try to commit without new changes
 		drmModeAtomicSetCursor(atom->req, atom->cursor);
 		if (drmModeAtomicCommit(drm_fd, atom->req, flags, conn)) {
-			wlr_log_errno(L_ERROR, "%s: Atomic commit failed (%s)",
+			wlr_log_errno(L_ERROR,
+				"%s: Atomic commit without new changes failed (%s)",
 				conn->output.name, modeset ? "modeset" : "pageflip");
 		}
 	}
@@ -100,8 +98,8 @@ static bool atomic_crtc_pageflip(struct wlr_drm_backend *drm,
 		struct wlr_drm_connector *conn,
 		struct wlr_drm_crtc *crtc,
 		uint32_t fb_id, drmModeModeInfo *mode) {
-	if (mode) {
+	if (mode != NULL) {
-		if (crtc->mode_id) {
+		if (crtc->mode_id != 0) {
 			drmModeDestroyPropertyBlob(drm->fd, crtc->mode_id);
 		}
 
@@ -111,26 +109,38 @@ static bool atomic_crtc_pageflip(struct wlr_drm_backend *drm,
 		}
 	}
 
-	struct atomic atom;
+	uint32_t flags = DRM_MODE_PAGE_FLIP_EVENT;
+	if (mode != NULL) {
+		flags |= DRM_MODE_ATOMIC_ALLOW_MODESET;
+	} else {
+		flags |= DRM_MODE_ATOMIC_NONBLOCK;
+	}
 
+	struct atomic atom;
 	atomic_begin(crtc, &atom);
 	atomic_add(&atom, conn->id, conn->props.crtc_id, crtc->id);
 	atomic_add(&atom, crtc->id, crtc->props.mode_id, crtc->mode_id);
 	atomic_add(&atom, crtc->id, crtc->props.active, 1);
 	set_plane_props(&atom, crtc->primary, crtc->id, fb_id, true);
-	return atomic_commit(drm->fd, &atom, conn,
+	return atomic_commit(drm->fd, &atom, conn, flags, mode);
-		mode ? DRM_MODE_ATOMIC_ALLOW_MODESET : DRM_MODE_ATOMIC_NONBLOCK,
-		mode);
 }
 
-static void atomic_conn_enable(struct wlr_drm_backend *drm,
+static bool atomic_conn_enable(struct wlr_drm_backend *drm,
 		struct wlr_drm_connector *conn, bool enable) {
 	struct wlr_drm_crtc *crtc = conn->crtc;
-	struct atomic atom;
 
+	struct atomic atom;
 	atomic_begin(crtc, &atom);
 	atomic_add(&atom, crtc->id, crtc->props.active, enable);
-	atomic_end(drm->fd, &atom);
+	if (enable) {
+		atomic_add(&atom, conn->id, conn->props.crtc_id, crtc->id);
+		atomic_add(&atom, crtc->id, crtc->props.mode_id, crtc->mode_id);
+	} else {
+		atomic_add(&atom, conn->id, conn->props.crtc_id, 0);
+		atomic_add(&atom, crtc->id, crtc->props.mode_id, 0);
+	}
+	return atomic_commit(drm->fd, &atom, conn, DRM_MODE_ATOMIC_ALLOW_MODESET,
+		true);
 }
 
 bool legacy_crtc_set_cursor(struct wlr_drm_backend *drm,
@@ -167,6 +177,10 @@ bool legacy_crtc_move_cursor(struct wlr_drm_backend *drm,
 
 static bool atomic_crtc_move_cursor(struct wlr_drm_backend *drm,
 		struct wlr_drm_crtc *crtc, int x, int y) {
+	if (!crtc || !crtc->cursor) {
+		return true;
+	}
+
 	struct wlr_drm_plane *plane = crtc->cursor;
 	// We can't use atomic operations on fake planes
 	if (plane->id == 0) {

backend/drm/drm.c

@@ -252,11 +252,16 @@ static void wlr_drm_connector_enable(struct wlr_output *output, bool enable) {
 	}
 
 	struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
-	drm->iface->conn_enable(drm, conn, enable);
+	bool ok = drm->iface->conn_enable(drm, conn, enable);
+	if (!ok) {
+		return;
+	}
 
 	if (enable) {
 		wlr_drm_connector_start_renderer(conn);
 	}
+
+	wlr_output_update_enabled(&conn->output, enable);
 }
 
 static void realloc_planes(struct wlr_drm_backend *drm, const uint32_t *crtc_in,
@@ -722,7 +727,8 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
 				drmModeFreeConnector(drm_conn);
 				continue;
 			}
-			wlr_output_init(&wlr_conn->output, &drm->backend, &output_impl);
+			wlr_output_init(&wlr_conn->output, &drm->backend, &output_impl,
+				drm->display);
 
 			struct wl_event_loop *ev = wl_display_get_event_loop(drm->display);
 			wlr_conn->retry_pageflip = wl_event_loop_add_timer(ev, retry_pageflip,
@@ -792,7 +798,7 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
 				wl_list_insert(&wlr_conn->output.modes, &mode->wlr_mode.link);
 			}
 
-			wlr_output_create_global(&wlr_conn->output, drm->display);
+			wlr_output_update_enabled(&wlr_conn->output, true);
 
 			wlr_conn->state = WLR_DRM_CONN_NEEDS_MODESET;
 			wlr_log(L_INFO, "Sending modesetting signal for '%s'",
@@ -802,7 +808,7 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
 				drm_conn->connection != DRM_MODE_CONNECTED) {
 			wlr_log(L_INFO, "'%s' disconnected", wlr_conn->output.name);
 
-			wlr_output_destroy_global(&wlr_conn->output);
+			wlr_output_update_enabled(&wlr_conn->output, false);
 			wlr_drm_connector_cleanup(wlr_conn);
 		}
 

backend/drm/legacy.c

@@ -25,10 +25,11 @@ static bool legacy_crtc_pageflip(struct wlr_drm_backend *drm,
 	return true;
 }
 
-static void legacy_conn_enable(struct wlr_drm_backend *drm,
+static bool legacy_conn_enable(struct wlr_drm_backend *drm,
 		struct wlr_drm_connector *conn, bool enable) {
-	drmModeConnectorSetProperty(drm->fd, conn->id, conn->props.dpms,
+	int ret = drmModeConnectorSetProperty(drm->fd, conn->id, conn->props.dpms,
 		enable ? DRM_MODE_DPMS_ON : DRM_MODE_DPMS_OFF);
+	return ret >= 0;
 }
 
 bool legacy_crtc_set_cursor(struct wlr_drm_backend *drm,

backend/headless/backend.c

@@ -15,7 +15,7 @@ static bool backend_start(struct wlr_backend *wlr_backend) {
 	struct wlr_headless_output *output;
 	wl_list_for_each(output, &backend->outputs, link) {
 		wl_event_source_timer_update(output->frame_timer, output->frame_delay);
-		wlr_output_create_global(&output->wlr_output, backend->display);
+		wlr_output_update_enabled(&output->wlr_output, true);
 		wl_signal_emit(&backend->backend.events.output_add,
 			&output->wlr_output);
 	}

backend/headless/output.c

@@ -105,7 +105,8 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
 		return NULL;
 	}
 	output->backend = backend;
-	wlr_output_init(&output->wlr_output, &backend->backend, &output_impl);
+	wlr_output_init(&output->wlr_output, &backend->backend, &output_impl,
+		backend->display);
 	struct wlr_output *wlr_output = &output->wlr_output;
 
 	output->egl_surface = egl_create_surface(&backend->egl, width, height);
@@ -138,7 +139,7 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
 
 	if (backend->started) {
 		wl_event_source_timer_update(output->frame_timer, output->frame_delay);
-		wlr_output_create_global(wlr_output, backend->display);
+		wlr_output_update_enabled(wlr_output, true);
 		wl_signal_emit(&backend->backend.events.output_add, wlr_output);
 	}
 

backend/wayland/backend.c

@@ -158,7 +158,7 @@ static void handle_display_destroy(struct wl_listener *listener, void *data) {
 	wlr_wl_backend_destroy(&backend->backend);
 }
 
-struct wlr_backend *wlr_wl_backend_create(struct wl_display *display) {
+struct wlr_backend *wlr_wl_backend_create(struct wl_display *display, const char *remote) {
 	wlr_log(L_INFO, "Creating wayland backend");
 
 	struct wlr_wl_backend *backend = calloc(1, sizeof(struct wlr_wl_backend));
@@ -173,7 +173,7 @@ struct wlr_backend *wlr_wl_backend_create(struct wl_display *display) {
 
 	backend->local_display = display;
 
-	backend->remote_display = wl_display_connect(NULL);
+	backend->remote_display = wl_display_connect(remote);
 	if (!backend->remote_display) {
 		wlr_log_errno(L_ERROR, "Could not connect to remote display");
 		return false;

backend/wayland/output.c

@@ -261,7 +261,8 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *_backend) {
 		wlr_log(L_ERROR, "Failed to allocate wlr_wl_backend_output");
 		return NULL;
 	}
-	wlr_output_init(&output->wlr_output, &backend->backend, &output_impl);
+	wlr_output_init(&output->wlr_output, &backend->backend, &output_impl,
+		backend->local_display);
 	struct wlr_output *wlr_output = &output->wlr_output;
 
 	wlr_output_update_custom_mode(wlr_output, 1280, 720, 0);
@@ -325,7 +326,7 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *_backend) {
 	}
 
 	wl_list_insert(&backend->outputs, &output->link);
-	wlr_output_create_global(wlr_output, backend->local_display);
+	wlr_output_update_enabled(wlr_output, true);
 	wl_signal_emit(&backend->backend.events.output_add, wlr_output);
 	return wlr_output;
 

backend/x11/backend.c

@@ -181,7 +181,8 @@ static int signal_frame(void *data) {
 
 static void init_atom(struct wlr_x11_backend *x11, struct wlr_x11_atom *atom,
 		uint8_t only_if_exists, const char *name) {
-	atom->cookie = xcb_intern_atom(x11->xcb_conn, only_if_exists, strlen(name), name);
+	atom->cookie = xcb_intern_atom(x11->xcb_conn, only_if_exists, strlen(name),
+		name);
 	atom->reply = xcb_intern_atom_reply(x11->xcb_conn, atom->cookie, NULL);
 }
 
@@ -201,7 +202,8 @@ static bool wlr_x11_backend_start(struct wlr_backend *backend) {
 
 	output->x11 = x11;
 
-	wlr_output_init(&output->wlr_output, &x11->backend, &output_impl);
+	wlr_output_init(&output->wlr_output, &x11->backend, &output_impl,
+		x11->wl_display);
 	snprintf(output->wlr_output.name, sizeof(output->wlr_output.name), "X11-1");
 
 	output->win = xcb_generate_id(x11->xcb_conn);
@@ -224,7 +226,7 @@ static bool wlr_x11_backend_start(struct wlr_backend *backend) {
 
 	xcb_map_window(x11->xcb_conn, output->win);
 	xcb_flush(x11->xcb_conn);
-	wlr_output_create_global(&output->wlr_output, x11->wl_display);
+	wlr_output_update_enabled(&output->wlr_output, true);
 
 	wl_signal_emit(&x11->backend.events.output_add, output);
 	wl_signal_emit(&x11->backend.events.input_add, &x11->keyboard_dev);

examples/idle.c

@@ -0,0 +1,191 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <pthread.h>
+#include <wayland-client.h>
+#include <wayland-client-protocol.h>
+#include <idle-client-protocol.h>
+#include <wlr/util/log.h>
+
+static struct org_kde_kwin_idle *idle_manager = NULL;
+static struct wl_seat *seat = NULL;
+static uint32_t timeout = 0, simulate_activity_timeout = 0, close_timeout = 0;
+static int run = 1;
+
+struct thread_args {
+	struct wl_display *display;
+	struct org_kde_kwin_idle_timeout *timer;
+};
+
+static void handle_global(void *data, struct wl_registry *registry,
+		uint32_t name, const char *interface, uint32_t version) {
+	fprintf(stdout, "interfaces found: %s\n", interface);
+	if (strcmp(interface, "org_kde_kwin_idle") == 0) {
+		idle_manager = wl_registry_bind(registry, name, &org_kde_kwin_idle_interface, 1);
+	}
+	else if (strcmp(interface, "wl_seat") == 0) {
+		seat = wl_registry_bind(registry, name, &wl_seat_interface, 1);
+	}
+}
+
+static void handle_global_remove(void *data, struct wl_registry *registry, uint32_t name) {
+	//TODO
+}
+
+static const struct wl_registry_listener registry_listener = {
+	.global = handle_global,
+	.global_remove = handle_global_remove,
+};
+
+static void handle_idle(void* data, struct org_kde_kwin_idle_timeout *timer) {
+	fprintf(stdout, "idle state\n");
+}
+
+static void handle_resume(void* data, struct org_kde_kwin_idle_timeout *timer) {
+	fprintf(stdout, "active state\n");
+}
+
+static const struct org_kde_kwin_idle_timeout_listener idle_timer_listener = {
+	.idle = handle_idle,
+	.resumed = handle_resume,
+};
+
+int parse_args(int argc, char *argv[]) {
+	int c;
+	while ((c = getopt(argc, argv, "c:hs:t:")) != -1) {
+		switch(c)
+		{
+			case 'c':
+				close_timeout = strtoul(optarg, NULL, 10);
+				break;
+			case 's':
+				simulate_activity_timeout = strtoul(optarg, NULL, 10);
+				break;
+			case 't':
+				timeout = strtoul(optarg, NULL, 10);
+				break;
+			case 'h':
+			case '?':
+				printf("Usage: %s [OPTIONS]\n", argv[0]);
+				printf("  -t seconds\t\t\tidle timeout in seconds\n");
+				printf("  -s seconds optional\t\tsimulate user activity after x seconds\n");
+				printf("  -c seconds optional\t\tclose program after x seconds\n");
+				printf("  -h\t\t\t\tthis help menu\n");
+				return 1;
+			default:
+				return 1;
+		}
+	}
+	return 0;
+}
+
+void *simulate_activity(void *data) {
+	sleep(simulate_activity_timeout);
+	fprintf(stdout, "simulate user activity\n");
+	struct thread_args *arg = data;
+	org_kde_kwin_idle_timeout_simulate_user_activity(arg->timer);
+	wl_display_roundtrip(arg->display);
+	return NULL;
+}
+
+void *close_program(void *data) {
+	sleep(close_timeout);
+	struct thread_args *arg = data;
+	org_kde_kwin_idle_timeout_release(arg->timer);
+	wl_display_roundtrip(arg->display);
+	fprintf(stdout, "close program\n");
+	run = 0;
+	return NULL;
+}
+
+void *main_loop(void *data) {
+	struct wl_display *display = data;
+	while (wl_display_dispatch(display) != -1) {
+		;
+	}
+	return NULL;
+}
+
+int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
+
+	if (parse_args(argc, argv) != 0) {
+		return -1;
+	}
+	if (timeout == 0) {
+		printf("idle timeout 0 is invalid\n");
+		return -1;
+	}
+
+	struct wl_display *display = wl_display_connect(NULL);
+	if (display == NULL) {
+		fprintf(stderr, "failed to create display\n");
+		return -1;
+	}
+
+	struct wl_registry *registry = wl_display_get_registry(display);
+	wl_registry_add_listener(registry, &registry_listener, NULL);
+	wl_display_dispatch(display);
+	wl_display_roundtrip(display);
+
+	if (idle_manager == NULL) {
+		fprintf(stderr, "display doesn't support idle protocol\n");
+		return -1;
+	}
+	if (seat== NULL) {
+		fprintf(stderr, "seat error\n");
+		return -1;
+	}
+	struct org_kde_kwin_idle_timeout *timer =
+		org_kde_kwin_idle_get_idle_timeout(idle_manager, seat, timeout * 1000);
+
+	if (timer == NULL) {
+		fprintf(stderr, "Could not create idle_timeout\n");
+		return -1;
+	}
+
+	pthread_t t1, t2, t3;
+	struct thread_args arg = {
+		.timer = timer,
+		.display = display,
+	};
+
+	if (simulate_activity_timeout != 0 && simulate_activity_timeout < close_timeout) {
+		if (pthread_create(&t1, NULL, &simulate_activity, (void *)&arg) != 0) {
+			return -1;
+		}
+	}
+	if (close_timeout != 0) {
+		if (pthread_create(&t2, NULL, &close_program, (void *)&arg) != 0) {
+			if (simulate_activity_timeout != 0) {
+				pthread_cancel(t1);
+			}
+			return -1;
+		}
+	}
+
+	org_kde_kwin_idle_timeout_add_listener(timer, &idle_timer_listener, timer);
+	fprintf(stdout, "waiting\n");
+
+	if (pthread_create(&t3, NULL, &main_loop, (void *)display) != 0) {
+		if (simulate_activity_timeout != 0) {
+			pthread_cancel(t1);
+		}
+		if (close_timeout != 0 ) {
+			pthread_cancel(t2);
+		}
+	}
+
+	if (simulate_activity_timeout != 0) {
+		pthread_join(t1, NULL);
+	}
+	if (close_timeout != 0) {
+		pthread_join(t2, NULL);
+	}
+	pthread_cancel(t3);
+
+	wl_display_disconnect(display);
+	return 0;
+}

examples/meson.build

@@ -5,6 +5,8 @@ lib_shared = static_library(
 	include_directories: include_directories('support')
 )
 
+threads = dependency('threads')
+
 executable('simple', 'simple.c', dependencies: wlroots, link_with: lib_shared)
 executable('pointer', 'pointer.c', dependencies: wlroots, link_with: lib_shared)
 executable('touch', 'touch.c', dependencies: wlroots, link_with: lib_shared)
@@ -32,3 +34,10 @@ executable(
 	dependencies: [wayland_client, wlr_protos, wlroots],
 	link_with: lib_shared,
 )
+
+executable(
+	'idle',
+	'idle.c',
+	dependencies: [wayland_client, wlr_protos, wlroots, threads],
+	link_with: lib_shared,
+)

examples/multi-pointer.c

@@ -176,6 +176,7 @@ static void handle_input_remove(struct compositor_state *state,
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state = {
 		.default_color = { 0.25f, 0.25f, 0.25f, 1 },
 		.clear_color = { 0.25f, 0.25f, 0.25f, 1 },

examples/output-layout.c

@@ -181,6 +181,7 @@ static void handle_keyboard_key(struct keyboard_state *kbstate,
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state = {0};
 
 	state.x_vel = 500;

examples/pointer.c

@@ -257,6 +257,7 @@ static void handle_tablet_tool_axis(struct wl_listener *listener, void *data) {
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state = {
 		.default_color = { 0.25f, 0.25f, 0.25f, 1 },
 		.clear_color = { 0.25f, 0.25f, 0.25f, 1 },

examples/rotation.c

@@ -123,6 +123,7 @@ static void handle_keyboard_key(struct keyboard_state *kbstate,
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state = {0};
 	state.config = parse_args(argc, argv);
 

examples/screenshot.c

@@ -36,6 +36,7 @@
 #include <sys/param.h>
 #include <screenshooter-client-protocol.h>
 #include "util/os-compatibility.h"
+#include <wlr/util/log.h>
 
 static struct wl_shm *shm = NULL;
 static struct orbital_screenshooter *screenshooter = NULL;
@@ -242,6 +243,7 @@ static int set_buffer_size(int *width, int *height) {
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct wl_display * display = wl_display_connect(NULL);
 	if (display == NULL) {
 		fprintf(stderr, "failed to create display: %m\n");

examples/simple.c

@@ -44,6 +44,7 @@ void handle_output_frame(struct output_state *output, struct timespec *ts) {
 }
 
 int main() {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state = {
 		.color = { 1.0, 0.0, 0.0 },
 		.dec = 0,

examples/support/shared.c

@@ -425,7 +425,7 @@ static void output_add_notify(struct wl_listener *listener, void *data) {
 	ostate->frame.notify = output_frame_notify;
 	ostate->resolution.notify = output_resolution_notify;
 	wl_signal_add(&output->events.frame, &ostate->frame);
-	wl_signal_add(&output->events.resolution, &ostate->resolution);
+	wl_signal_add(&output->events.mode, &ostate->resolution);
 	wl_list_insert(&state->outputs, &ostate->link);
 	if (state->output_add_cb) {
 		state->output_add_cb(ostate);

examples/tablet.c

@@ -139,6 +139,7 @@ static void handle_pad_button(struct tablet_pad_state *pstate,
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state = {
 		.tool_color = { 1, 1, 1, 1 },
 		.pad_color = { 0.75, 0.75, 0.75, 1.0 }

examples/touch.c

@@ -94,6 +94,7 @@ static void handle_touch_motion(struct touch_state *tstate, int32_t touch_id,
 }
 
 int main(int argc, char *argv[]) {
+	wlr_log_init(L_DEBUG, NULL);
 	struct sample_state state;
 	wl_list_init(&state.touch_points);
 

include/backend/drm/iface.h

@@ -15,7 +15,7 @@ struct wlr_drm_crtc;
 // Used to provide atomic or legacy DRM functions
 struct wlr_drm_interface {
 	// Enable or disable DPMS for connector
-	void (*conn_enable)(struct wlr_drm_backend *drm,
+	bool (*conn_enable)(struct wlr_drm_backend *drm,
 		struct wlr_drm_connector *conn, bool enable);
 	// Pageflip on crtc. If mode is non-NULL perform a full modeset using it.
 	bool (*crtc_pageflip)(struct wlr_drm_backend *drm,

include/rootston/config.h

@@ -7,6 +7,7 @@
 
 struct roots_output_config {
 	char *name;
+	bool enable;
 	enum wl_output_transform transform;
 	int x, y;
 	float scale;

include/rootston/desktop.h

@@ -13,6 +13,7 @@
 #include <wlr/types/wlr_primary_selection.h>
 #include <wlr/types/wlr_screenshooter.h>
 #include <wlr/types/wlr_list.h>
+#include <wlr/types/wlr_idle.h>
 #include "rootston/view.h"
 #include "rootston/config.h"
 
@@ -44,6 +45,7 @@ struct roots_desktop {
 	struct wlr_screenshooter *screenshooter;
 	struct wlr_server_decoration_manager *server_decoration_manager;
 	struct wlr_primary_selection_device_manager *primary_selection_device_manager;
+	struct wlr_idle *idle;
 
 	struct wl_listener output_add;
 	struct wl_listener output_remove;

include/wlr/backend/wayland.h

@@ -11,8 +11,12 @@
 /**
  * Creates a new wlr_wl_backend. This backend will be created with no outputs;
  * you must use wlr_wl_output_create to add them.
+ *
+ * The `remote` argument is the name of the host compositor wayland socket. Set
+ * to NULL for the default behaviour (WAYLAND_DISPLAY env variable or wayland-0
+ * default)
  */
-struct wlr_backend *wlr_wl_backend_create(struct wl_display *display);
+struct wlr_backend *wlr_wl_backend_create(struct wl_display *display, const char *remote);
 
 /**
  * Adds a new output to this backend. You may remove outputs by destroying them.

include/wlr/interfaces/wlr_output.h

@@ -26,14 +26,11 @@ struct wlr_output_impl {
 };
 
 void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
-	const struct wlr_output_impl *impl);
+	const struct wlr_output_impl *impl, struct wl_display *display);
-void wlr_output_free(struct wlr_output *output);
 void wlr_output_update_mode(struct wlr_output *output,
 	struct wlr_output_mode *mode);
 void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width,
 	int32_t height, int32_t refresh);
-struct wl_global *wlr_output_create_global(struct wlr_output *wlr_output,
+void wlr_output_update_enabled(struct wlr_output *output, bool enabled);
-	struct wl_display *display);
-void wlr_output_destroy_global(struct wlr_output *wlr_output);
 
 #endif

include/wlr/types/wlr_idle.h

@@ -0,0 +1,51 @@
+#ifndef WLR_TYPES_WLR_IDLE_H
+#define WLR_TYPES_WLR_IDLE_H
+
+#include <wayland-server.h>
+#include <wlr/types/wlr_seat.h>
+
+/**
+ * Idle protocol is used to create timers which will notify the client when the
+ * compositor does not receive any input for a given time(in milliseconds). Also
+ * the client will be notify when the timer receve an activity notify and already
+ * was in idle state. Besides this, the client is able to simulate user activity
+ * which will reset the timers and at any time can destroy the timer.
+ */
+
+
+struct wlr_idle {
+	struct wl_global *wl_global;
+	struct wl_list idle_timers; // wlr_idle_timeout::link
+	struct wl_event_loop *event_loop;
+
+	struct wl_listener display_destroy;
+	struct wl_signal activity_notify;
+
+	void *data;
+};
+
+struct wlr_idle_timeout {
+	struct wl_resource *resource;
+	struct wl_list link;
+	struct wlr_seat *seat;
+
+	struct wl_event_source *idle_source;
+	bool idle_state;
+	uint32_t timeout; // milliseconds
+
+	struct wl_listener input_listener;
+	struct wl_listener seat_destroy;
+
+	void *data;
+};
+
+struct wlr_idle *wlr_idle_create(struct wl_display *display);
+
+void wlr_idle_destroy(struct wlr_idle *idle);
+
+/**
+ * Send notification to restart all timers for the given seat. Called by
+ * compositor when there is an user activity event on that seat.
+ */
+void wlr_idle_notify_activity(struct wlr_idle *idle, struct wlr_seat *seat);
+#endif

include/wlr/types/wlr_output.h

@@ -36,19 +36,19 @@ struct wlr_output_impl;
 struct wlr_output {
 	const struct wlr_output_impl *impl;
 	struct wlr_backend *backend;
+	struct wl_display *display;
 
 	struct wl_global *wl_global;
 	struct wl_list wl_resources;
 
-	uint32_t flags;
 	char name[16];
 	char make[48];
 	char model[16];
 	char serial[16];
-	float scale;
-	int32_t width, height;
-	int32_t refresh; // mHz
 	int32_t phys_width, phys_height; // mm
+
+	bool enabled;
+	float scale;
 	enum wl_output_subpixel subpixel;
 	enum wl_output_transform transform;
 	bool needs_swap;
@@ -58,11 +58,14 @@ struct wlr_output {
 	// Note: some backends may have zero modes
 	struct wl_list modes;
 	struct wlr_output_mode *current_mode;
+	int32_t width, height;
+	int32_t refresh; // mHz
 
 	struct {
 		struct wl_signal frame;
 		struct wl_signal swap_buffers;
-		struct wl_signal resolution;
+		struct wl_signal enable;
+		struct wl_signal mode;
 		struct wl_signal scale;
 		struct wl_signal transform;
 		struct wl_signal destroy;

include/wlr/xwayland.h

@@ -98,9 +98,12 @@ struct wlr_xwayland_surface {
 	char *title;
 	char *class;
 	char *instance;
-	struct wlr_xwayland_surface *parent;
 	pid_t pid;
 
+	struct wl_list children; // wlr_xwayland_surface::parent_link
+	struct wlr_xwayland_surface *parent;
+	struct wl_list parent_link; // wlr_xwayland_surface::children
+
 	xcb_atom_t *window_type;
 	size_t window_type_len;
 

protocol/idle.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<protocol name="idle">
+  <copyright><![CDATA[
+    Copyright (C) 2015 Martin Gräßlin
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2.1 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+  ]]></copyright>
+  <interface  name="org_kde_kwin_idle" version="1">
+      <description summary="User idle time manager">
+        This interface allows to monitor user idle time on a given seat. The interface
+        allows to register timers which trigger after no user activity was registered
+        on the seat for a given interval. It notifies when user activity resumes.
+
+        This is useful for applications wanting to perform actions when the user is not
+        interacting with the system, e.g. chat applications setting the user as away, power
+        management features to dim screen, etc..
+      </description>
+      <request name="get_idle_timeout">
+        <arg name="id" type="new_id" interface="org_kde_kwin_idle_timeout"/>
+        <arg name="seat" type="object" interface="wl_seat"/>
+        <arg name="timeout" type="uint" summary="The idle timeout in msec"/>
+      </request>
+  </interface>
+  <interface name="org_kde_kwin_idle_timeout" version="1">
+      <request name="release" type="destructor">
+        <description summary="release the timeout object"/>
+      </request>
+      <request name="simulate_user_activity">
+          <description summary="Simulates user activity for this timeout, behaves just like real user activity on the seat"/>
+      </request>
+      <event name="idle">
+          <description summary="Triggered when there has not been any user activity in the requested idle time interval"/>
+      </event>
+      <event name="resumed">
+          <description summary="Triggered on the first user activity after an idle event"/>
+      </event>
+  </interface>
+</protocol>

protocol/meson.build

@@ -26,6 +26,7 @@ protocols = [
 	'gtk-primary-selection.xml',
 	'screenshooter.xml',
 	'server-decoration.xml',
+	'idle.xml',
 ]
 
 client_protocols = [
@@ -34,6 +35,7 @@ client_protocols = [
 	'gtk-primary-selection.xml',
 	'screenshooter.xml',
 	'server-decoration.xml',
+	'idle.xml',
 ]
 
 wl_protos_src = []

rootston/config.c

@@ -263,10 +263,19 @@ static int config_ini_handler(void *user, const char *section, const char *name,
 			oc->name = strdup(output_name);
 			oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
 			oc->scale = 1;
+			oc->enable = true;
 			wl_list_insert(&config->outputs, &oc->link);
 		}
 
-		if (strcmp(name, "x") == 0) {
+		if (strcmp(name, "enable") == 0) {
+			if (strcasecmp(value, "true") == 0) {
+				oc->enable = true;
+			} else if (strcasecmp(value, "false") == 0) {
+				oc->enable = false;
+			} else {
+				wlr_log(L_ERROR, "got invalid output enable value: %s", value);
+			}
+		} else if (strcmp(name, "x") == 0) {
 			oc->x = strtol(value, NULL, 10);
 		} else if (strcmp(name, "y") == 0) {
 			oc->y = strtol(value, NULL, 10);

rootston/desktop.c

@@ -8,6 +8,7 @@
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/types/wlr_gamma_control.h>
+#include <wlr/types/wlr_idle.h>
 #include <wlr/types/wlr_primary_selection.h>
 #include <wlr/types/wlr_server_decoration.h>
 #include <wlr/types/wlr_output_layout.h>
@@ -502,6 +503,7 @@ struct roots_desktop *desktop_create(struct roots_server *server,
 		WLR_SERVER_DECORATION_MANAGER_MODE_CLIENT);
 	desktop->primary_selection_device_manager =
 		wlr_primary_selection_device_manager_create(server->wl_display);
+	desktop->idle = wlr_idle_create(server->wl_display);
 
 	return desktop;
 }

rootston/keyboard.c

@@ -2,6 +2,7 @@
 #include <stdint.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <stdbool.h>
 #include <wayland-server.h>
 #include <wlr/types/wlr_input_device.h>
 #include <wlr/types/wlr_pointer.h>
@@ -85,6 +86,8 @@ static void pressed_keysyms_update(xkb_keysym_t *pressed_keysyms,
 
 static const char *exec_prefix = "exec ";
 
+static bool outputs_enabled = true;
+
 static void keyboard_binding_execute(struct roots_keyboard *keyboard,
 		const char *command) {
 	struct roots_seat *seat = keyboard->seat;
@@ -119,6 +122,12 @@ static void keyboard_binding_execute(struct roots_keyboard *keyboard,
 		}
 	} else if (strcmp(command, "nop") == 0) {
 		wlr_log(L_DEBUG, "nop command");
+	} else if (strcmp(command, "toggle_outputs") == 0) {
+		outputs_enabled = !outputs_enabled;
+		struct roots_output *output;
+		wl_list_for_each(output, &keyboard->input->server->desktop->outputs, link) {
+			wlr_output_enable(output->wlr_output, outputs_enabled);
+		}
 	} else {
 		wlr_log(L_ERROR, "unknown binding command: %s", command);
 	}

rootston/main.c

@@ -37,7 +37,6 @@ int main(int argc, char **argv) {
 
 	if (server.backend == NULL) {
 		wlr_log(L_ERROR, "could not start backend");
-		wlr_backend_destroy(server.backend);
 		return 1;
 	}
 

rootston/output.c

@@ -169,6 +169,19 @@ static void render_wl_shell_surface(struct wlr_wl_shell_surface *surface,
 	}
 }
 
+static void render_xwayland_children(struct wlr_xwayland_surface *surface,
+		struct roots_desktop *desktop, struct wlr_output *wlr_output,
+		struct timespec *when) {
+	struct wlr_xwayland_surface *child;
+	wl_list_for_each(child, &surface->children, parent_link) {
+		if (child->surface != NULL && child->added) {
+			render_surface(child->surface, desktop, wlr_output, when,
+				child->x, child->y, 0);
+		}
+		render_xwayland_children(child, desktop, wlr_output, when);
+	}
+}
+
 static void render_view(struct roots_view *view, struct roots_desktop *desktop,
 		struct wlr_output *wlr_output, struct timespec *when) {
 	switch (view->type) {
@@ -200,7 +213,7 @@ static bool has_standalone_surface(struct roots_view *view) {
 	case ROOTS_WL_SHELL_VIEW:
 		return wl_list_empty(&view->wl_shell_surface->popups);
 	case ROOTS_XWAYLAND_VIEW:
-		return true;
+		return wl_list_empty(&view->xwayland_surface->children);
 	}
 	return true;
 }
@@ -211,6 +224,10 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
 	struct roots_desktop *desktop = output->desktop;
 	struct roots_server *server = desktop->server;
 
+	if (!wlr_output->enabled) {
+		return;
+	}
+
 	struct timespec now;
 	clock_gettime(CLOCK_MONOTONIC, &now);
 
@@ -218,27 +235,36 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
 	wlr_renderer_begin(server->renderer, wlr_output);
 
 	if (output->fullscreen_view != NULL) {
+		struct roots_view *view = output->fullscreen_view;
+
 		// Make sure the view is centered on screen
 		const struct wlr_box *output_box =
 			wlr_output_layout_get_box(desktop->layout, wlr_output);
 		struct wlr_box view_box;
-		view_get_box(output->fullscreen_view, &view_box);
+		view_get_box(view, &view_box);
 		double view_x = (double)(output_box->width - view_box.width) / 2 +
 			output_box->x;
 		double view_y = (double)(output_box->height - view_box.height) / 2 +
 			output_box->y;
-		view_move(output->fullscreen_view, view_x, view_y);
+		view_move(view, view_x, view_y);
 
-		if (has_standalone_surface(output->fullscreen_view)) {
+		if (has_standalone_surface(view)) {
-			wlr_output_set_fullscreen_surface(wlr_output,
+			wlr_output_set_fullscreen_surface(wlr_output, view->wlr_surface);
-				output->fullscreen_view->wlr_surface);
 		} else {
 			wlr_output_set_fullscreen_surface(wlr_output, NULL);
 
 			glClearColor(0, 0, 0, 0);
 			glClear(GL_COLOR_BUFFER_BIT);
 
-			render_view(output->fullscreen_view, desktop, wlr_output, &now);
+			render_view(view, desktop, wlr_output, &now);
+
+			// During normal rendering the xwayland window tree isn't traversed
+			// because all windows are rendered. Here we only want to render
+			// the fullscreen window's children so we have to traverse the tree.
+			if (view->type == ROOTS_XWAYLAND_VIEW) {
+				render_xwayland_children(view->xwayland_surface, desktop,
+					wlr_output, &now);
+			}
 		}
 		wlr_renderer_end(server->renderer);
 		wlr_output_swap_buffers(wlr_output);
@@ -324,9 +350,10 @@ void output_add_notify(struct wl_listener *listener, void *data) {
 	wlr_log(L_DEBUG, "'%s %s %s' %"PRId32"mm x %"PRId32"mm", wlr_output->make,
 		wlr_output->model, wlr_output->serial, wlr_output->phys_width,
 		wlr_output->phys_height);
+
 	if (wl_list_length(&wlr_output->modes) > 0) {
-		struct wlr_output_mode *mode = NULL;
+		struct wlr_output_mode *mode =
-		mode = wl_container_of((&wlr_output->modes)->prev, mode, link);
+			wl_container_of((&wlr_output->modes)->prev, mode, link);
 		wlr_output_set_mode(wlr_output, mode);
 	}
 
@@ -341,6 +368,7 @@ void output_add_notify(struct wl_listener *listener, void *data) {
 	struct roots_output_config *output_config =
 		roots_config_get_output(config, wlr_output);
 	if (output_config) {
+		if (output_config->enable) {
 			if (output_config->mode.width) {
 				set_mode(wlr_output, output_config);
 			}
@@ -348,6 +376,9 @@ void output_add_notify(struct wl_listener *listener, void *data) {
 			wlr_output_set_transform(wlr_output, output_config->transform);
 			wlr_output_layout_add(desktop->layout, wlr_output, output_config->x,
 				output_config->y);
+		} else {
+			wlr_output_enable(wlr_output, false);
+		}
 	} else {
 		wlr_output_layout_add_auto(desktop->layout, wlr_output);
 	}

rootston/seat.c

@@ -5,6 +5,7 @@
 #include <wlr/config.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include <wlr/util/log.h>
+#include <wlr/types/wlr_idle.h>
 #include "rootston/xcursor.h"
 #include "rootston/input.h"
 #include "rootston/seat.h"
@@ -14,6 +15,8 @@
 static void handle_keyboard_key(struct wl_listener *listener, void *data) {
 	struct roots_keyboard *keyboard =
 		wl_container_of(listener, keyboard, keyboard_key);
+	struct roots_desktop *desktop = keyboard->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, keyboard->seat->seat);
 	struct wlr_event_keyboard_key *event = data;
 	roots_keyboard_handle_key(keyboard, event);
 }
@@ -22,12 +25,16 @@ static void handle_keyboard_modifiers(struct wl_listener *listener,
 		void *data) {
 	struct roots_keyboard *keyboard =
 		wl_container_of(listener, keyboard, keyboard_modifiers);
+	struct roots_desktop *desktop = keyboard->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, keyboard->seat->seat);
 	roots_keyboard_handle_modifiers(keyboard);
 }
 
 static void handle_cursor_motion(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, motion);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_pointer_motion *event = data;
 	roots_cursor_handle_motion(cursor, event);
 }
@@ -36,6 +43,8 @@ static void handle_cursor_motion_absolute(struct wl_listener *listener,
 		void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, motion_absolute);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_pointer_motion_absolute *event = data;
 	roots_cursor_handle_motion_absolute(cursor, event);
 }
@@ -43,6 +52,8 @@ static void handle_cursor_motion_absolute(struct wl_listener *listener,
 static void handle_cursor_button(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, button);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_pointer_button *event = data;
 	roots_cursor_handle_button(cursor, event);
 }
@@ -50,6 +61,8 @@ static void handle_cursor_button(struct wl_listener *listener, void *data) {
 static void handle_cursor_axis(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, axis);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_pointer_axis *event = data;
 	roots_cursor_handle_axis(cursor, event);
 }
@@ -57,6 +70,8 @@ static void handle_cursor_axis(struct wl_listener *listener, void *data) {
 static void handle_touch_down(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, touch_down);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_touch_down *event = data;
 	roots_cursor_handle_touch_down(cursor, event);
 }
@@ -64,6 +79,8 @@ static void handle_touch_down(struct wl_listener *listener, void *data) {
 static void handle_touch_up(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, touch_up);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_touch_up *event = data;
 	roots_cursor_handle_touch_up(cursor, event);
 }
@@ -71,6 +88,8 @@ static void handle_touch_up(struct wl_listener *listener, void *data) {
 static void handle_touch_motion(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, touch_motion);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_touch_motion *event = data;
 	roots_cursor_handle_touch_motion(cursor, event);
 }
@@ -78,6 +97,8 @@ static void handle_touch_motion(struct wl_listener *listener, void *data) {
 static void handle_tool_axis(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, tool_axis);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_tablet_tool_axis *event = data;
 	roots_cursor_handle_tool_axis(cursor, event);
 }
@@ -85,6 +106,8 @@ static void handle_tool_axis(struct wl_listener *listener, void *data) {
 static void handle_tool_tip(struct wl_listener *listener, void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, tool_tip);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_event_tablet_tool_tip *event = data;
 	roots_cursor_handle_tool_tip(cursor, event);
 }
@@ -93,6 +116,8 @@ static void handle_request_set_cursor(struct wl_listener *listener,
 		void *data) {
 	struct roots_cursor *cursor =
 		wl_container_of(listener, cursor, request_set_cursor);
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	wlr_idle_notify_activity(desktop->idle, cursor->seat->seat);
 	struct wlr_seat_pointer_request_set_cursor_event *event = data;
 	roots_cursor_handle_request_set_cursor(cursor, event);
 }
@@ -268,11 +293,6 @@ struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
 		return NULL;
 	}
 
-	wlr_seat_set_capabilities(seat->seat,
-		WL_SEAT_CAPABILITY_KEYBOARD |
-		WL_SEAT_CAPABILITY_POINTER |
-		WL_SEAT_CAPABILITY_TOUCH);
-
 	wl_list_insert(&input->seats, &seat->link);
 
 	seat->seat_destroy.notify = roots_seat_handle_seat_destroy;
@@ -281,6 +301,28 @@ struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
 	return seat;
 }
 
+static void seat_update_capabilities(struct roots_seat *seat) {
+	uint32_t caps = 0;
+	if (!wl_list_empty(&seat->keyboards)) {
+		caps |= WL_SEAT_CAPABILITY_KEYBOARD;
+	}
+	if (!wl_list_empty(&seat->pointers) || !wl_list_empty(&seat->tablet_tools)) {
+		caps |= WL_SEAT_CAPABILITY_POINTER;
+	}
+	if (!wl_list_empty(&seat->touch)) {
+		caps |= WL_SEAT_CAPABILITY_TOUCH;
+	}
+	wlr_seat_set_capabilities(seat->seat, caps);
+
+	// Hide cursor if seat doesn't have pointer capability
+	if ((caps & WL_SEAT_CAPABILITY_POINTER) == 0) {
+		wlr_cursor_set_image(seat->cursor->cursor, NULL, 0, 0, 0, 0, 0, 0);
+	} else {
+		wlr_xcursor_manager_set_cursor_image(seat->cursor->xcursor_manager,
+			seat->cursor->default_xcursor, seat->cursor->cursor);
+	}
+}
+
 static void seat_add_keyboard(struct roots_seat *seat,
 		struct wlr_input_device *device) {
 	assert(device->type == WLR_INPUT_DEVICE_KEYBOARD);
@@ -379,6 +421,8 @@ void roots_seat_add_device(struct roots_seat *seat,
 		seat_add_tablet_tool(seat, device);
 		break;
 	}
+
+	seat_update_capabilities(seat);
 }
 
 static void seat_remove_keyboard(struct roots_seat *seat,
@@ -455,6 +499,8 @@ void roots_seat_remove_device(struct roots_seat *seat,
 		seat_remove_tablet_tool(seat, device);
 		break;
 	}
+
+	seat_update_capabilities(seat);
 }
 
 void roots_seat_configure_xcursor(struct roots_seat *seat) {

types/meson.build

@@ -6,6 +6,7 @@ lib_wlr_types = static_library(
 		'wlr_compositor.c',
 		'wlr_cursor.c',
 		'wlr_gamma_control.c',
+		'wlr_idle.c',
 		'wlr_input_device.c',
 		'wlr_keyboard.c',
 		'wlr_list.c',

types/wlr_idle.c

@@ -0,0 +1,190 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_idle.h>
+#include <wlr/util/log.h>
+#include "idle-protocol.h"
+
+static void idle_timeout_destroy(struct wlr_idle_timeout *timer) {
+	wl_list_remove(&timer->input_listener.link);
+	wl_list_remove(&timer->seat_destroy.link);
+	wl_event_source_remove(timer->idle_source);
+	wl_list_remove(&timer->link);
+	wl_resource_set_user_data(timer->resource, NULL);
+	free(timer);
+}
+
+static int idle_notify(void *data) {
+	struct wlr_idle_timeout *timer = data;
+	timer->idle_state = true;
+	org_kde_kwin_idle_timeout_send_idle(timer->resource);
+	return 1;
+}
+
+static void handle_activity(struct wlr_idle_timeout *timer) {
+	// rearm the timer
+	wl_event_source_timer_update(timer->idle_source, timer->timeout);
+	// in case the previous state was sleeping send a resume event and switch state
+	if (timer->idle_state) {
+		timer->idle_state = false;
+		org_kde_kwin_idle_timeout_send_resumed(timer->resource);
+	}
+}
+
+static void handle_timer_resource_destroy(struct wl_resource *timer_resource) {
+	struct wlr_idle_timeout *timer = wl_resource_get_user_data(timer_resource);
+	if (timer != NULL) {
+		idle_timeout_destroy(timer);
+	}
+}
+
+static void handle_seat_destroy(struct wl_listener *listener, void *data) {
+	struct wlr_idle_timeout *timer = wl_container_of(listener, timer, seat_destroy);
+	if (timer != NULL) {
+		idle_timeout_destroy(timer);
+	}
+}
+
+static void release_idle_timeout(struct wl_client *client,
+		struct wl_resource *resource){
+	handle_timer_resource_destroy(resource);
+}
+
+static void simulate_activity(struct wl_client *client,
+		struct wl_resource *resource){
+	struct wlr_idle_timeout *timer = wl_resource_get_user_data(resource);
+	handle_activity(timer);
+}
+
+static struct org_kde_kwin_idle_timeout_interface idle_timeout_impl = {
+	.release = release_idle_timeout,
+	.simulate_user_activity = simulate_activity,
+};
+
+static void handle_input_notification(struct wl_listener *listener, void *data) {
+	struct wlr_idle_timeout *timer = wl_container_of(listener, timer, input_listener);
+	struct wlr_seat *seat = data;
+	if (timer->seat == seat) {
+		handle_activity(timer);
+	}
+}
+
+static void create_idle_timer(struct wl_client *client,
+		struct wl_resource *idle_resource,
+		uint32_t id,
+		struct wl_resource *seat_resource,
+		uint32_t timeout) {
+	struct wlr_idle *idle = wl_resource_get_user_data(idle_resource);
+	struct wlr_seat_client *client_seat =
+		wl_resource_get_user_data(seat_resource);
+
+	struct wlr_idle_timeout *timer =
+		calloc(1, sizeof(struct wlr_idle_timeout));
+	if (!timer) {
+		wl_resource_post_no_memory(idle_resource);
+		return;
+	}
+	timer->seat = client_seat->seat;
+	timer->timeout = timeout;
+	timer->idle_state = false;
+	timer->resource = wl_resource_create(client,
+		&org_kde_kwin_idle_timeout_interface,
+		wl_resource_get_version(idle_resource), id);
+	if (timer->resource == NULL) {
+		free(timer);
+		wl_resource_post_no_memory(idle_resource);
+		return;
+	}
+	wl_resource_set_implementation(timer->resource, &idle_timeout_impl, timer,
+			handle_timer_resource_destroy);
+	wl_list_insert(&idle->idle_timers, &timer->link);
+
+	timer->seat_destroy.notify = handle_seat_destroy;
+	wl_signal_add(&timer->seat->events.destroy, &timer->seat_destroy);
+
+	timer->input_listener.notify = handle_input_notification;
+	wl_signal_add(&idle->activity_notify, &timer->input_listener);
+	// create the timer
+	timer->idle_source =
+		wl_event_loop_add_timer(idle->event_loop, idle_notify, timer);
+	if (timer->idle_source == NULL) {
+		wl_list_remove(&timer->link);
+		wl_list_remove(&timer->input_listener.link);
+		wl_list_remove(&timer->seat_destroy.link);
+		wl_resource_set_user_data(timer->resource, NULL);
+		free(timer);
+		wl_resource_post_no_memory(idle_resource);
+		return;
+	}
+	// arm the timer
+	wl_event_source_timer_update(timer->idle_source, timer->timeout);
+}
+
+static struct org_kde_kwin_idle_interface idle_impl = {
+	.get_idle_timeout = create_idle_timer,
+};
+
+static void idle_bind(struct wl_client *wl_client, void *data,
+		uint32_t version, uint32_t id) {
+	struct wlr_idle *idle = data;
+	assert(wl_client && idle);
+
+	struct wl_resource *wl_resource = wl_resource_create(wl_client,
+		&org_kde_kwin_idle_interface, version, id);
+	if (wl_resource == NULL) {
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
+	wl_resource_set_implementation(wl_resource, &idle_impl, idle, NULL);
+}
+
+void wlr_idle_destroy(struct wlr_idle *idle) {
+	if (!idle) {
+		return;
+	}
+	wl_list_remove(&idle->display_destroy.link);
+	struct wlr_idle_timeout *timer, *tmp;
+	wl_list_for_each_safe(timer, tmp, &idle->idle_timers, link) {
+		idle_timeout_destroy(timer);
+	}
+	wl_global_destroy(idle->wl_global);
+	free(idle);
+}
+
+static void handle_display_destroy(struct wl_listener *listener, void *data) {
+	struct wlr_idle *idle = wl_container_of(listener, idle, display_destroy);
+	wlr_idle_destroy(idle);
+}
+
+struct wlr_idle *wlr_idle_create(struct wl_display *display) {
+	struct wlr_idle *idle = calloc(1, sizeof(struct wlr_idle));
+	if (!idle) {
+		return NULL;
+	}
+	wl_list_init(&idle->idle_timers);
+	wl_signal_init(&idle->activity_notify);
+
+	idle->event_loop = wl_display_get_event_loop(display);
+	if (idle->event_loop == NULL) {
+		free(idle);
+		return NULL;
+	}
+
+	idle->display_destroy.notify = handle_display_destroy;
+	wl_display_add_destroy_listener(display, &idle->display_destroy);
+
+	idle->wl_global = wl_global_create(display, &org_kde_kwin_idle_interface,
+				1, idle, idle_bind);
+	if (idle->wl_global == NULL){
+		wl_list_remove(&idle->display_destroy.link);
+		free(idle);
+		return NULL;
+	}
+	wlr_log(L_DEBUG, "idle manager created");
+	return idle;
+}
+
+void wlr_idle_notify_activity(struct wlr_idle *idle, struct wlr_seat *seat) {
+	wl_signal_emit(&idle->activity_notify, seat);
+}

types/wlr_output.c

@@ -113,38 +113,41 @@ static void wl_output_bind(struct wl_client *wl_client, void *data,
 	wl_output_send_to_resource(wl_resource);
 }
 
-static void handle_display_destroy(struct wl_listener *listener, void *data) {
+static void wlr_output_create_global(struct wlr_output *output) {
-	struct wlr_output *output =
+	if (output->wl_global != NULL) {
-		wl_container_of(listener, output, display_destroy);
+		return;
-	wlr_output_destroy_global(output);
+	}
-}
+	struct wl_global *wl_global = wl_global_create(output->display,
-
+		&wl_output_interface, 3, output, wl_output_bind);
-struct wl_global *wlr_output_create_global(struct wlr_output *wlr_output,
+	output->wl_global = wl_global;
-		struct wl_display *display) {
+}
-	if (wlr_output->wl_global != NULL) {
+
-		return wlr_output->wl_global;
+static void wlr_output_destroy_global(struct wlr_output *output) {
-	}
+	if (output->wl_global == NULL) {
-	struct wl_global *wl_global = wl_global_create(display,
-		&wl_output_interface, 3, wlr_output, wl_output_bind);
-	wlr_output->wl_global = wl_global;
-
-	wlr_output->display_destroy.notify = handle_display_destroy;
-	wl_display_add_destroy_listener(display, &wlr_output->display_destroy);
-
-	return wl_global;
-}
-
-void wlr_output_destroy_global(struct wlr_output *wlr_output) {
-	if (wlr_output->wl_global == NULL) {
 		return;
 	}
-	wl_list_remove(&wlr_output->display_destroy.link);
 	struct wl_resource *resource, *tmp;
-	wl_resource_for_each_safe(resource, tmp, &wlr_output->wl_resources) {
+	wl_resource_for_each_safe(resource, tmp, &output->wl_resources) {
 		wl_resource_destroy(resource);
 	}
-	wl_global_destroy(wlr_output->wl_global);
+	wl_global_destroy(output->wl_global);
-	wlr_output->wl_global = NULL;
+	output->wl_global = NULL;
+}
+
+void wlr_output_update_enabled(struct wlr_output *output, bool enabled) {
+	if (output->enabled == enabled) {
+		return;
+	}
+
+	output->enabled = enabled;
+
+	if (enabled) {
+		wlr_output_create_global(output);
+	} else {
+		wlr_output_destroy_global(output);
+	}
+
+	wl_signal_emit(&output->events.enable, output);
 }
 
 static void wlr_output_update_matrix(struct wlr_output *output) {
@@ -153,6 +156,10 @@ static void wlr_output_update_matrix(struct wlr_output *output) {
 }
 
 void wlr_output_enable(struct wlr_output *output, bool enable) {
+	if (output->enabled == enable) {
+		return;
+	}
+
 	if (output->impl->enable) {
 		output->impl->enable(output, enable);
 	}
@@ -199,7 +206,7 @@ void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width,
 		wlr_output_send_current_mode_to_resource(resource);
 	}
 
-	wl_signal_emit(&output->events.resolution, output);
+	wl_signal_emit(&output->events.mode, output);
 }
 
 void wlr_output_set_transform(struct wlr_output *output,
@@ -248,11 +255,18 @@ void wlr_output_set_scale(struct wlr_output *output, float scale) {
 	wl_signal_emit(&output->events.scale, output);
 }
 
+static void handle_display_destroy(struct wl_listener *listener, void *data) {
+	struct wlr_output *output =
+		wl_container_of(listener, output, display_destroy);
+	wlr_output_destroy_global(output);
+}
+
 void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
-		const struct wlr_output_impl *impl) {
+		const struct wlr_output_impl *impl, struct wl_display *display) {
 	assert(impl->make_current && impl->swap_buffers && impl->transform);
 	output->backend = backend;
 	output->impl = impl;
+	output->display = display;
 	wl_list_init(&output->modes);
 	output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
 	output->scale = 1;
@@ -260,10 +274,14 @@ void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
 	wl_list_init(&output->wl_resources);
 	wl_signal_init(&output->events.frame);
 	wl_signal_init(&output->events.swap_buffers);
-	wl_signal_init(&output->events.resolution);
+	wl_signal_init(&output->events.enable);
+	wl_signal_init(&output->events.mode);
 	wl_signal_init(&output->events.scale);
 	wl_signal_init(&output->events.transform);
 	wl_signal_init(&output->events.destroy);
+
+	output->display_destroy.notify = handle_display_destroy;
+	wl_display_add_destroy_listener(display, &output->display_destroy);
 }
 
 void wlr_output_destroy(struct wlr_output *output) {
@@ -271,6 +289,7 @@ void wlr_output_destroy(struct wlr_output *output) {
 		return;
 	}
 
+	wl_list_remove(&output->display_destroy.link);
 	wlr_output_destroy_global(output);
 	wlr_output_set_fullscreen_surface(output, NULL);
 

types/wlr_output_layout.c

@@ -18,7 +18,7 @@ struct wlr_output_layout_output_state {
 	struct wlr_box _box; // should never be read directly, use the getter
 	bool auto_configured;
 
-	struct wl_listener resolution;
+	struct wl_listener mode;
 	struct wl_listener scale;
 	struct wl_listener transform;
 	struct wl_listener output_destroy;
@@ -47,7 +47,7 @@ struct wlr_output_layout *wlr_output_layout_create() {
 static void wlr_output_layout_output_destroy(
 		struct wlr_output_layout_output *l_output) {
 	wl_signal_emit(&l_output->events.destroy, l_output);
-	wl_list_remove(&l_output->state->resolution.link);
+	wl_list_remove(&l_output->state->mode.link);
 	wl_list_remove(&l_output->state->scale.link);
 	wl_list_remove(&l_output->state->transform.link);
 	wl_list_remove(&l_output->state->output_destroy.link);
@@ -132,9 +132,9 @@ static void wlr_output_layout_reconfigure(struct wlr_output_layout *layout) {
 	wl_signal_emit(&layout->events.change, layout);
 }
 
-static void handle_output_resolution(struct wl_listener *listener, void *data) {
+static void handle_output_mode(struct wl_listener *listener, void *data) {
 	struct wlr_output_layout_output_state *state =
-		wl_container_of(listener, state, resolution);
+		wl_container_of(listener, state, mode);
 	wlr_output_layout_reconfigure(state->layout);
 }
 
@@ -176,8 +176,8 @@ static struct wlr_output_layout_output *wlr_output_layout_output_create(
 	wl_signal_init(&l_output->events.destroy);
 	wl_list_insert(&layout->outputs, &l_output->link);
 
-	wl_signal_add(&output->events.resolution, &l_output->state->resolution);
+	wl_signal_add(&output->events.mode, &l_output->state->mode);
-	l_output->state->resolution.notify = handle_output_resolution;
+	l_output->state->mode.notify = handle_output_mode;
 	wl_signal_add(&output->events.scale, &l_output->state->scale);
 	l_output->state->scale.notify = handle_output_scale;
 	wl_signal_add(&output->events.transform, &l_output->state->transform);

xwayland/xwm.c

@@ -96,6 +96,8 @@ static struct wlr_xwayland_surface *wlr_xwayland_surface_create(
 	surface->height = height;
 	surface->override_redirect = override_redirect;
 	wl_list_insert(&xwm->surfaces, &surface->link);
+	wl_list_init(&surface->children);
+	wl_list_init(&surface->parent_link);
 	wl_signal_init(&surface->events.destroy);
 	wl_signal_init(&surface->events.request_configure);
 	wl_signal_init(&surface->events.request_move);
@@ -215,6 +217,7 @@ static void wlr_xwayland_surface_destroy(
 	}
 
 	wl_list_remove(&xsurface->link);
+	wl_list_remove(&xsurface->parent_link);
 
 	if (xsurface->surface_id) {
 		wl_list_remove(&xsurface->unpaired_link);
@@ -305,6 +308,13 @@ static void read_surface_parent(struct wlr_xwm *xwm,
 		xsurface->parent = NULL;
 	}
 
+	wl_list_remove(&xsurface->parent_link);
+	if (xsurface->parent != NULL) {
+		wl_list_insert(&xsurface->parent->children, &xsurface->parent_link);
+	} else {
+		wl_list_init(&xsurface->parent_link);
+	}
+
 	wlr_log(L_DEBUG, "XCB_ATOM_WM_TRANSIENT_FOR: %p", xid);
 	wl_signal_emit(&xsurface->events.set_parent, xsurface);
 }