1 files changed, 501 insertions, 51 deletions

diff --git a/src/compositor-wayland.c b/src/compositor-wayland.c
index 899c3293..f35db9c3 100644
--- a/src/compositor-wayland.c
+++ b/src/compositor-wayland.c
@@ -42,6 +42,7 @@
 #include "../shared/image-loader.h"
 #include "../shared/os-compatibility.h"
 #include "../shared/cairo-util.h"
+#include "fullscreen-shell-client-protocol.h"
 
 #define WINDOW_TITLE "Weston Compositor"
 
@@ -53,13 +54,17 @@ struct wayland_compositor {
 		struct wl_registry *registry;
 		struct wl_compositor *compositor;
 		struct wl_shell *shell;
+		struct _wl_fullscreen_shell *fshell;
 		struct wl_shm *shm;
 
+		struct wl_list output_list;
+
 		struct wl_event_source *wl_source;
 		uint32_t event_mask;
 	} parent;
 
 	int use_pixman;
+	int sprawl_across_outputs;
 
 	struct theme *theme;
 	cairo_device_t *frame_device;
@@ -75,6 +80,10 @@ struct wayland_output {
 	struct {
 		int draw_initial_frame;
 		struct wl_surface *surface;
+
+		struct wl_output *output;
+		uint32_t global_id;
+
 		struct wl_shell_surface *shell_surface;
 		int configure_width, configure_height;
 	} parent;
@@ -103,6 +112,29 @@ struct wayland_output {
 	uint32_t scale;
 };
 
+struct wayland_parent_output {
+	struct wayland_output *output;
+	struct wl_list link;
+
+	struct wl_output *global;
+	uint32_t id;
+
+	struct {
+		char *make;
+		char *model;
+		int32_t width, height;
+		uint32_t subpixel;
+	} physical;
+
+	int32_t x, y;
+	uint32_t transform;
+	uint32_t scale;
+
+	struct wl_list mode_list;
+	struct weston_mode *preferred_mode;
+	struct weston_mode *current_mode;
+};
+
 struct wayland_shm_buffer {
 	struct wayland_output *output;
 	struct wl_list link;
@@ -135,6 +167,7 @@ struct wayland_input {
 		} cursor;
 	} parent;
 
+	enum weston_key_state_update keyboard_state_update;
 	uint32_t key_serial;
 	uint32_t enter_serial;
 	int focus;
@@ -211,13 +244,13 @@ wayland_output_get_shm_buffer(struct wayland_output *output)
 
 	fd = os_create_anonymous_file(height * stride);
 	if (fd < 0) {
-		perror("os_create_anonymous_file");
+		weston_log("could not create an anonymous file buffer: %m\n");
 		return NULL;
 	}
 
 	data = mmap(NULL, height * stride, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	if (data == MAP_FAILED) {
-		perror("mmap");
+		weston_log("could not mmap %d memory for data: %m\n", height * stride);
 		close(fd);
 		return NULL;
 	}
@@ -289,10 +322,9 @@ draw_initial_frame(struct wayland_output *output)
 		sb->output = NULL;
 
 	wl_surface_attach(output->parent.surface, sb->buffer, 0, 0);
-
-	/* We only need to damage some part, as its only transparant
-	 * pixels anyway. */
-	wl_surface_damage(output->parent.surface, 0, 0, 1, 1);
+	wl_surface_damage(output->parent.surface, 0, 0,
+			  output->base.current_mode->width,
+			  output->base.current_mode->height);
 }
 
 static void
@@ -553,7 +585,8 @@ wayland_output_destroy(struct weston_output *output_base)
 
 	wl_egl_window_destroy(output->gl.egl_window);
 	wl_surface_destroy(output->parent.surface);
-	wl_shell_surface_destroy(output->parent.shell_surface);
+	if (output->parent.shell_surface)
+		wl_shell_surface_destroy(output->parent.shell_surface);
 
 	if (output->frame)
 		frame_destroy(output->frame);
@@ -593,7 +626,9 @@ wayland_output_init_gl_renderer(struct wayland_output *output)
 	}
 
 	if (gl_renderer->output_create(&output->base,
-			output->gl.egl_window) < 0)
+				       output->gl.egl_window,
+				       gl_renderer->alpha_attribs,
+				       NULL) < 0)
 		goto cleanup_window;
 
 	return 0;
@@ -736,6 +771,9 @@ wayland_output_set_fullscreen(struct wayland_output *output,
 			      enum wl_shell_surface_fullscreen_method method,
 			      uint32_t framerate, struct wl_output *target)
 {
+	struct wayland_compositor *c =
+		(struct wayland_compositor *)output->base.compositor;
+
 	if (output->frame) {
 		frame_destroy(output->frame);
 		output->frame = NULL;
@@ -743,8 +781,177 @@ wayland_output_set_fullscreen(struct wayland_output *output,
 
 	wayland_output_resize_surface(output);
 
-	wl_shell_surface_set_fullscreen(output->parent.shell_surface,
-					method, framerate, target);
+	if (output->parent.shell_surface) {
+		wl_shell_surface_set_fullscreen(output->parent.shell_surface,
+						method, framerate, target);
+	} else if (c->parent.fshell) {
+		_wl_fullscreen_shell_present_surface(c->parent.fshell,
+						     output->parent.surface,
+						     method, target);
+	}
+}
+
+static struct weston_mode *
+wayland_output_choose_mode(struct wayland_output *output,
+			   struct weston_mode *ref_mode)
+{
+	struct weston_mode *mode;
+
+	/* First look for an exact match */
+	wl_list_for_each(mode, &output->base.mode_list, link)
+		if (mode->width == ref_mode->width &&
+		    mode->height == ref_mode->height &&
+		    mode->refresh == ref_mode->refresh)
+			return mode;
+
+	/* If we can't find an exact match, ignore refresh and try again */
+	wl_list_for_each(mode, &output->base.mode_list, link)
+		if (mode->width == ref_mode->width &&
+		    mode->height == ref_mode->height)
+			return mode;
+
+	/* Yeah, we failed */
+	return NULL;
+}
+
+enum mode_status {
+	MODE_STATUS_UNKNOWN,
+	MODE_STATUS_SUCCESS,
+	MODE_STATUS_FAIL,
+	MODE_STATUS_CANCEL,
+};
+
+static void
+mode_feedback_successful(void *data,
+			 struct _wl_fullscreen_shell_mode_feedback *fb)
+{
+	enum mode_status *value = data;
+
+	printf("Mode switch successful\n");
+
+	*value = MODE_STATUS_SUCCESS;
+}
+
+static void
+mode_feedback_failed(void *data, struct _wl_fullscreen_shell_mode_feedback *fb)
+{
+	enum mode_status *value = data;
+
+	printf("Mode switch failed\n");
+
+	*value = MODE_STATUS_FAIL;
+}
+
+static void
+mode_feedback_cancelled(void *data, struct _wl_fullscreen_shell_mode_feedback *fb)
+{
+	enum mode_status *value = data;
+
+	printf("Mode switch cancelled\n");
+
+	*value = MODE_STATUS_CANCEL;
+}
+
+struct _wl_fullscreen_shell_mode_feedback_listener mode_feedback_listener = {
+	mode_feedback_successful,
+	mode_feedback_failed,
+	mode_feedback_cancelled,
+};
+
+static int
+wayland_output_switch_mode(struct weston_output *output_base,
+			   struct weston_mode *mode)
+{
+	struct wayland_output *output = (struct wayland_output *) output_base;
+	struct wayland_compositor *c;
+	struct wl_surface *old_surface;
+	struct weston_mode *old_mode;
+	struct _wl_fullscreen_shell_mode_feedback *mode_feedback;
+	enum mode_status mode_status;
+	int ret = 0;
+
+	if (output_base == NULL) {
+		weston_log("output is NULL.\n");
+		return -1;
+	}
+
+	if (mode == NULL) {
+		weston_log("mode is NULL.\n");
+		return -1;
+	}
+
+	c = (struct wayland_compositor *)output_base->compositor;
+
+	if (output->parent.shell_surface || !c->parent.fshell)
+		return -1;
+
+	mode = wayland_output_choose_mode(output, mode);
+	if (mode == NULL)
+		return -1;
+
+	if (output->base.current_mode == mode)
+		return 0;
+
+	old_mode = output->base.current_mode;
+	old_surface = output->parent.surface;
+	output->base.current_mode = mode;
+	output->parent.surface =
+		wl_compositor_create_surface(c->parent.compositor);
+	wl_surface_set_user_data(output->parent.surface, output);
+
+	/* Blow the old buffers because we changed size/surfaces */
+	wayland_output_resize_surface(output);
+
+	mode_feedback =
+		_wl_fullscreen_shell_present_surface_for_mode(c->parent.fshell,
+							      output->parent.surface,
+							      output->parent.output,
+							      mode->refresh);
+	_wl_fullscreen_shell_mode_feedback_add_listener(mode_feedback,
+							&mode_feedback_listener,
+							&mode_status);
+
+	/* This should kick-start things again */
+	output->parent.draw_initial_frame = 1;
+	wayland_output_start_repaint_loop(&output->base);
+
+	mode_status = MODE_STATUS_UNKNOWN;
+	while (mode_status == MODE_STATUS_UNKNOWN && ret >= 0)
+		ret = wl_display_dispatch(c->parent.wl_display);
+
+	_wl_fullscreen_shell_mode_feedback_destroy(mode_feedback);
+
+	if (mode_status == MODE_STATUS_FAIL) {
+		output->base.current_mode = old_mode;
+		wl_surface_destroy(output->parent.surface);
+		output->parent.surface = old_surface;
+		wayland_output_resize_surface(output);
+
+		return -1;
+	}
+
+	old_mode->flags &= ~WL_OUTPUT_MODE_CURRENT;
+	output->base.current_mode->flags |= WL_OUTPUT_MODE_CURRENT;
+
+	if (c->use_pixman) {
+		pixman_renderer_output_destroy(output_base);
+		if (wayland_output_init_pixman_renderer(output) < 0)
+			goto err_output;
+	} else {
+		gl_renderer->output_destroy(output_base);
+		wl_egl_window_destroy(output->gl.egl_window);
+		if (wayland_output_init_gl_renderer(output) < 0)
+			goto err_output;
+	}
+	wl_surface_destroy(old_surface);
+
+	weston_output_schedule_repaint(&output->base);
+
+	return 0;
+
+err_output:
+	/* XXX */
+	return -1;
 }
 
 static struct wayland_output *
@@ -776,15 +983,18 @@ wayland_output_create(struct wayland_compositor *c, int x, int y,
 	wl_surface_set_user_data(output->parent.surface, output);
 
 	output->parent.draw_initial_frame = 1;
-	output->parent.shell_surface =
-		wl_shell_get_shell_surface(c->parent.shell,
-					   output->parent.surface);
-	if (!output->parent.shell_surface)
-		goto err_surface;
-	wl_shell_surface_add_listener(output->parent.shell_surface,
-				      &shell_surface_listener, output);
 
-	if (fullscreen) {
+	if (c->parent.shell) {
+		output->parent.shell_surface =
+			wl_shell_get_shell_surface(c->parent.shell,
+						   output->parent.surface);
+		if (!output->parent.shell_surface)
+			goto err_surface;
+		wl_shell_surface_add_listener(output->parent.shell_surface,
+					      &shell_surface_listener, output);
+	}
+
+	if (fullscreen && c->parent.shell) {
 		wl_shell_surface_set_fullscreen(output->parent.shell_surface,
 						0, 0, NULL);
 		wl_display_roundtrip(c->parent.wl_display);
@@ -825,7 +1035,7 @@ wayland_output_create(struct wayland_compositor *c, int x, int y,
 	output->base.assign_planes = NULL;
 	output->base.set_backlight = NULL;
 	output->base.set_dpms = NULL;
-	output->base.switch_mode = NULL;
+	output->base.switch_mode = wayland_output_switch_mode;
 
 	wl_list_insert(c->base.output_list.prev, &output->base.link);
 
@@ -833,7 +1043,8 @@ wayland_output_create(struct wayland_compositor *c, int x, int y,
 
 err_output:
 	weston_output_destroy(&output->base);
-	wl_shell_surface_destroy(output->parent.shell_surface);
+	if (output->parent.shell_surface)
+		wl_shell_surface_destroy(output->parent.shell_surface);
 err_surface:
 	wl_surface_destroy(output->parent.surface);
 err_name:
@@ -921,6 +1132,71 @@ wayland_output_create_for_config(struct wayland_compositor *c,
 	return output;
 }
 
+static struct wayland_output *
+wayland_output_create_for_parent_output(struct wayland_compositor *c,
+					struct wayland_parent_output *poutput)
+{
+	struct wayland_output *output;
+	struct weston_mode *mode;
+	int32_t x;
+
+	if (poutput->current_mode) {
+		mode = poutput->current_mode;
+	} else if (poutput->preferred_mode) {
+		mode = poutput->current_mode;
+	} else if (!wl_list_empty(&poutput->mode_list)) {
+		mode = container_of(poutput->mode_list.next,
+				    struct weston_mode, link);
+	} else {
+		weston_log("No valid modes found.  Skipping output");
+		return NULL;
+	}
+
+	if (!wl_list_empty(&c->base.output_list)) {
+		output = container_of(c->base.output_list.prev,
+				      struct wayland_output, base.link);
+		x = output->base.x + output->base.current_mode->width;
+	} else {
+		x = 0;
+	}
+
+	output = wayland_output_create(c, x, 0, mode->width, mode->height,
+				       NULL, 0,
+				       WL_OUTPUT_TRANSFORM_NORMAL, 1);
+	if (!output)
+		return NULL;
+
+	output->parent.output = poutput->global;
+
+	output->base.make = poutput->physical.make;
+	output->base.model = poutput->physical.model;
+	wl_list_init(&output->base.mode_list);
+	wl_list_insert_list(&output->base.mode_list, &poutput->mode_list);
+	wl_list_init(&poutput->mode_list);
+
+	wayland_output_set_fullscreen(output,
+				      WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER,
+				      mode->refresh, poutput->global);
+
+	if (output->parent.shell_surface) {
+		wl_shell_surface_set_fullscreen(output->parent.shell_surface,
+						WL_SHELL_SURFACE_FULLSCREEN_METHOD_DRIVER,
+						mode->refresh, poutput->global);
+	} else if (c->parent.fshell) {
+		_wl_fullscreen_shell_present_surface(c->parent.fshell,
+						     output->parent.surface,
+						     _WL_FULLSCREEN_SHELL_PRESENT_METHOD_CENTER,
+						     poutput->global);
+		_wl_fullscreen_shell_mode_feedback_destroy(
+			_wl_fullscreen_shell_present_surface_for_mode(c->parent.fshell,
+								      output->parent.surface,
+								      poutput->global,
+								      mode->refresh));
+	}
+
+	return output;
+}
+
 static void
 shell_surface_ping(void *data, struct wl_shell_surface *shell_surface,
 		   uint32_t serial)
@@ -966,7 +1242,8 @@ input_set_cursor(struct wayland_input *input)
 
 	image = input->compositor->cursor->images[0];
 	buffer = wl_cursor_image_get_buffer(image);
-
+	if (!buffer)
+		return;
 
 	wl_pointer_set_cursor(input->parent.pointer, input->enter_serial,
 			      input->parent.cursor.surface,
@@ -1141,40 +1418,52 @@ input_handle_keymap(void *data, struct wl_keyboard *keyboard, uint32_t format,
 	struct xkb_keymap *keymap;
 	char *map_str;
 
-	if (!data) {
-		close(fd);
-		return;
-	}
+	if (!data)
+		goto error;
 
-	if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
-		close(fd);
-		return;
-	}
+	if (format == WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
+		map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
+		if (map_str == MAP_FAILED) {
+			weston_log("mmap failed: %m\n");
+			goto error;
+		}
 
-	map_str = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
-	if (map_str == MAP_FAILED) {
-		close(fd);
-		return;
-	}
+		keymap = xkb_map_new_from_string(input->compositor->base.xkb_context,
+						 map_str,
+						 XKB_KEYMAP_FORMAT_TEXT_V1,
+						 0);
+		munmap(map_str, size);
 
-	keymap = xkb_map_new_from_string(input->compositor->base.xkb_context,
-					 map_str,
-					 XKB_KEYMAP_FORMAT_TEXT_V1,
-					 0);
-	munmap(map_str, size);
-	close(fd);
+		if (!keymap) {
+			weston_log("failed to compile keymap\n");
+			goto error;
+		}
 
-	if (!keymap) {
-		weston_log("failed to compile keymap\n");
-		return;
+		input->keyboard_state_update = STATE_UPDATE_NONE;
+	} else if (format == WL_KEYBOARD_KEYMAP_FORMAT_NO_KEYMAP) {
+		weston_log("No keymap provided; falling back to defalt\n");
+		keymap = NULL;
+		input->keyboard_state_update = STATE_UPDATE_AUTOMATIC;
+	} else {
+		weston_log("Invalid keymap\n");
+		goto error;
 	}
 
+	close(fd);
+
 	if (input->base.keyboard)
 		weston_seat_update_keymap(&input->base, keymap);
 	else
 		weston_seat_init_keyboard(&input->base, keymap);
 
-	xkb_map_unref(keymap);
+	if (keymap)
+		xkb_map_unref(keymap);
+
+	return;
+
+error:
+	wl_keyboard_release(input->parent.keyboard);
+	close(fd);
 }
 
 static void
@@ -1249,7 +1538,7 @@ input_handle_key(void *data, struct wl_keyboard *keyboard,
 	notify_key(&input->base, time, key,
 		   state ? WL_KEYBOARD_KEY_STATE_PRESSED :
 			   WL_KEYBOARD_KEY_STATE_RELEASED,
-		   STATE_UPDATE_NONE);
+		   input->keyboard_state_update);
 }
 
 static void
@@ -1339,6 +1628,130 @@ display_add_seat(struct wayland_compositor *c, uint32_t id)
 }
 
 static void
+wayland_parent_output_geometry(void *data, struct wl_output *output_proxy,
+			       int32_t x, int32_t y,
+			       int32_t physical_width, int32_t physical_height,
+			       int32_t subpixel, const char *make,
+			       const char *model, int32_t transform)
+{
+	struct wayland_parent_output *output = data;
+
+	output->x = x;
+	output->y = y;
+	output->physical.width = physical_width;
+	output->physical.height = physical_height;
+	output->physical.subpixel = subpixel;
+
+	free(output->physical.make);
+	output->physical.make = strdup(make);
+	free(output->physical.model);
+	output->physical.model = strdup(model);
+
+	output->transform = transform;
+}
+
+static struct weston_mode *
+find_mode(struct wl_list *list, int32_t width, int32_t height, uint32_t refresh)
+{
+	struct weston_mode *mode;
+
+	wl_list_for_each(mode, list, link) {
+		if (mode->width == width && mode->height == height &&
+		    mode->refresh == refresh)
+			return mode;
+	}
+
+	mode = zalloc(sizeof *mode);
+	if (!mode)
+		return NULL;
+
+	mode->width = width;
+	mode->height = height;
+	mode->refresh = refresh;
+	wl_list_insert(list, &mode->link);
+
+	return mode;
+}
+
+static void
+wayland_parent_output_mode(void *data, struct wl_output *wl_output_proxy,
+			   uint32_t flags, int32_t width, int32_t height,
+			   int32_t refresh)
+{
+	struct wayland_parent_output *output = data;
+	struct weston_mode *mode;
+
+	if (output->output) {
+		mode = find_mode(&output->output->base.mode_list,
+				 width, height, refresh);
+		if (!mode)
+			return;
+		mode->flags = flags;
+		/* Do a mode-switch on current mode change? */
+	} else {
+		mode = find_mode(&output->mode_list, width, height, refresh);
+		if (!mode)
+			return;
+		mode->flags = flags;
+		if (flags & WL_OUTPUT_MODE_CURRENT)
+			output->current_mode = mode;
+		if (flags & WL_OUTPUT_MODE_PREFERRED)
+			output->preferred_mode = mode;
+	}
+}
+
+static const struct wl_output_listener output_listener = {
+	wayland_parent_output_geometry,
+	wayland_parent_output_mode
+};
+
+static void
+wayland_compositor_register_output(struct wayland_compositor *c, uint32_t id)
+{
+	struct wayland_parent_output *output;
+
+	output = zalloc(sizeof *output);
+	if (!output)
+		return;
+
+	output->id = id;
+	output->global = wl_registry_bind(c->parent.registry, id,
+					  &wl_output_interface, 1);
+	if (!output->global)
+		return;
+	wl_output_add_listener(output->global, &output_listener, output);
+
+	output->scale = 0;
+	output->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+	output->physical.subpixel = WL_OUTPUT_SUBPIXEL_UNKNOWN;
+	wl_list_init(&output->mode_list);
+	wl_list_insert(&c->parent.output_list, &output->link);
+
+	if (c->sprawl_across_outputs) {
+		wl_display_roundtrip(c->parent.wl_display);
+		wayland_output_create_for_parent_output(c, output);
+	}
+}
+
+static void
+wayland_parent_output_destroy(struct wayland_parent_output *output)
+{
+	struct weston_mode *mode, *next;
+
+	if (output->output)
+		wayland_output_destroy(&output->output->base);
+
+	wl_output_destroy(output->global);
+	free(output->physical.make);
+	free(output->physical.model);
+
+	wl_list_for_each_safe(mode, next, &output->mode_list, link) {
+		wl_list_remove(&mode->link);
+		free(mode);
+	}
+}
+
+static void
 registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 		       const char *interface, uint32_t version)
 {
@@ -1352,16 +1765,35 @@ registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
 		c->parent.shell =
 			wl_registry_bind(registry, name,
 					 &wl_shell_interface, 1);
+	} else if (strcmp(interface, "_wl_fullscreen_shell") == 0) {
+		c->parent.fshell =
+			wl_registry_bind(registry, name,
+					 &_wl_fullscreen_shell_interface, 1);
 	} else if (strcmp(interface, "wl_seat") == 0) {
 		display_add_seat(c, name);
+	} else if (strcmp(interface, "wl_output") == 0) {
+		wayland_compositor_register_output(c, name);
 	} else if (strcmp(interface, "wl_shm") == 0) {
 		c->parent.shm =
 			wl_registry_bind(registry, name, &wl_shm_interface, 1);
 	}
 }
 
+static void
+registry_handle_global_remove(void *data, struct wl_registry *registry,
+			      uint32_t name)
+{
+	struct wayland_compositor *c = data;
+	struct wayland_parent_output *output;
+
+	wl_list_for_each(output, &c->parent.output_list, link)
+		if (output->id == name)
+			wayland_parent_output_destroy(output);
+}
+
 static const struct wl_registry_listener registry_listener = {
-	registry_handle_global
+	registry_handle_global,
+	registry_handle_global_remove
 };
 
 static int
@@ -1426,6 +1858,10 @@ create_cursor(struct wayland_compositor *c, struct weston_config *config)
 	weston_config_section_get_int(s, "cursor-size", &size, 32);
 
 	c->cursor_theme = wl_cursor_theme_load(theme, size, c->parent.shm);
+	if (!c->cursor_theme) {
+		fprintf(stderr, "could not load cursor theme\n");
+		return;
+	}
 
 	free(theme);
 
@@ -1485,6 +1921,7 @@ wayland_compositor_create(struct wl_display *display, int use_pixman,
 		goto err_compositor;
 	}
 
+	wl_list_init(&c->parent.output_list);
 	wl_list_init(&c->input_list);
 	c->parent.registry = wl_display_get_registry(c->parent.wl_display);
 	wl_registry_add_listener(c->parent.registry, &registry_listener, c);
@@ -1534,10 +1971,6 @@ wayland_compositor_create(struct wl_display *display, int use_pixman,
 
 	wl_event_source_check(c->parent.wl_source);
 
-	weston_compositor_add_key_binding(&c->base, KEY_F,
-				          MODIFIER_CTRL | MODIFIER_ALT,
-				          fullscreen_binding, c);
-
 	return c;
 err_renderer:
 	c->base.renderer->destroy(&c->base);
@@ -1577,8 +2010,9 @@ backend_init(struct wl_display *display, int *argc, char *argv[],
 {
 	struct wayland_compositor *c;
 	struct wayland_output *output;
+	struct wayland_parent_output *poutput;
 	struct weston_config_section *section;
-	int x, count, width, height, scale, use_pixman, fullscreen;
+	int x, count, width, height, scale, use_pixman, fullscreen, sprawl;
 	const char *section_name, *display_name;
 	char *name;
 
@@ -1590,6 +2024,7 @@ backend_init(struct wl_display *display, int *argc, char *argv[],
 		{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
 		{ WESTON_OPTION_INTEGER, "output-count", 0, &count },
 		{ WESTON_OPTION_BOOLEAN, "fullscreen", 0, &fullscreen },
+		{ WESTON_OPTION_BOOLEAN, "sprawl", 0, &sprawl },
 	};
 
 	width = 0;
@@ -1599,6 +2034,7 @@ backend_init(struct wl_display *display, int *argc, char *argv[],
 	use_pixman = 0;
 	count = 1;
 	fullscreen = 0;
+	sprawl = 0;
 	parse_options(wayland_options,
 		      ARRAY_LENGTH(wayland_options), argc, argv);
 
@@ -1607,6 +2043,16 @@ backend_init(struct wl_display *display, int *argc, char *argv[],
 	if (!c)
 		return NULL;
 
+	if (sprawl || c->parent.fshell) {
+		c->sprawl_across_outputs = 1;
+		wl_display_roundtrip(c->parent.wl_display);
+
+		wl_list_for_each(poutput, &c->parent.output_list, link)
+			wayland_output_create_for_parent_output(c, poutput);
+
+		return &c->base;
+	}
+
 	if (fullscreen) {
 		output = wayland_output_create(c, 0, 0, width, height,
 					       NULL, 1, 0, 1);
@@ -1661,6 +2107,10 @@ backend_init(struct wl_display *display, int *argc, char *argv[],
 		--count;
 	}
 
+	weston_compositor_add_key_binding(&c->base, KEY_F,
+				          MODIFIER_CTRL | MODIFIER_ALT,
+				          fullscreen_binding, c);
+
 	return &c->base;
 
 err_outputs: