Merge pull request #1817 from RyanDwyer/fullscreen

Implement fullscreen

include/sway/ipc-server.h

@@ -1,6 +1,7 @@
 #ifndef _SWAY_IPC_SERVER_H
 #define _SWAY_IPC_SERVER_H
 #include <sys/socket.h>
+#include "sway/config.h"
 #include "sway/tree/container.h"
 #include "ipc.h"
 

include/sway/tree/container.h

@@ -45,6 +45,7 @@ enum sway_container_border {
 
 struct sway_root;
 struct sway_output;
+struct sway_workspace;
 struct sway_view;
 
 struct sway_container {
@@ -52,6 +53,7 @@ struct sway_container {
 		// TODO: Encapsulate state for other node types as well like C_CONTAINER
 		struct sway_root *sway_root;
 		struct sway_output *sway_output;
+		struct sway_workspace *sway_workspace;
 		struct sway_view *sway_view;
 	};
 

include/sway/tree/view.h

@@ -28,6 +28,7 @@ struct sway_view_impl {
 	void (*configure)(struct sway_view *view, double ox, double oy, int width,
 		int height);
 	void (*set_activated)(struct sway_view *view, bool activated);
+	void (*set_fullscreen)(struct sway_view *view, bool fullscreen);
 	void (*for_each_surface)(struct sway_view *view,
 		wlr_surface_iterator_func_t iterator, void *user_data);
 	void (*close)(struct sway_view *view);
@@ -41,6 +42,7 @@ struct sway_view {
 	struct sway_container *swayc; // NULL for unmanaged views
 	struct wlr_surface *surface; // NULL for unmapped views
 	int width, height;
+	bool is_fullscreen;
 
 	union {
 		struct wlr_xdg_surface_v6 *wlr_xdg_surface_v6;
@@ -63,6 +65,7 @@ struct sway_xdg_shell_v6_view {
 	struct wl_listener request_move;
 	struct wl_listener request_resize;
 	struct wl_listener request_maximize;
+	struct wl_listener request_fullscreen;
 	struct wl_listener new_popup;
 	struct wl_listener map;
 	struct wl_listener unmap;
@@ -79,6 +82,7 @@ struct sway_xwayland_view {
 	struct wl_listener request_resize;
 	struct wl_listener request_maximize;
 	struct wl_listener request_configure;
+	struct wl_listener request_fullscreen;
 	struct wl_listener map;
 	struct wl_listener unmap;
 	struct wl_listener destroy;
@@ -93,6 +97,7 @@ struct sway_xwayland_unmanaged {
 	int lx, ly;
 
 	struct wl_listener request_configure;
+	struct wl_listener request_fullscreen;
 	struct wl_listener commit;
 	struct wl_listener map;
 	struct wl_listener unmap;
@@ -106,6 +111,8 @@ struct sway_wl_shell_view {
 	struct wl_listener request_move;
 	struct wl_listener request_resize;
 	struct wl_listener request_maximize;
+	struct wl_listener request_fullscreen;
+	struct wl_listener set_state;
 	struct wl_listener destroy;
 
 	int pending_width, pending_height;
@@ -155,6 +162,8 @@ void view_configure(struct sway_view *view, double ox, double oy, int width,
 
 void view_set_activated(struct sway_view *view, bool activated);
 
+void view_set_fullscreen(struct sway_view *view, bool fullscreen);
+
 void view_close(struct sway_view *view);
 
 void view_damage(struct sway_view *view, bool whole);

include/sway/tree/workspace.h

@@ -3,6 +3,13 @@
 
 #include "sway/tree/container.h"
 
+struct sway_view;
+
+struct sway_workspace {
+	struct sway_container *swayc;
+	struct sway_view *fullscreen;
+};
+
 extern char *prev_workspace_name;
 
 char *workspace_next_name(const char *output_name);

sway/commands.c

@@ -99,6 +99,7 @@ static struct cmd_handler handlers[] = {
 	{ "exec", cmd_exec },
 	{ "exec_always", cmd_exec_always },
 	{ "focus_follows_mouse", cmd_focus_follows_mouse },
+	{ "fullscreen", cmd_fullscreen },
 	{ "include", cmd_include },
 	{ "input", cmd_input },
 	{ "mode", cmd_mode },

sway/commands/fullscreen.c

@@ -0,0 +1,37 @@
+#include <wlr/types/wlr_wl_shell.h>
+#include "log.h"
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "sway/tree/container.h"
+#include "sway/tree/view.h"
+#include "sway/tree/layout.h"
+
+struct cmd_results *cmd_fullscreen(int argc, char **argv) {
+	struct cmd_results *error = NULL;
+	if ((error = checkarg(argc, "fullscreen", EXPECTED_LESS_THAN, 2))) {
+		return error;
+	}
+	struct sway_container *container =
+		config->handler_context.current_container;
+	if (container->type != C_VIEW) {
+		return cmd_results_new(CMD_INVALID, "fullscreen",
+				"Only views can fullscreen");
+	}
+	struct sway_view *view = container->sway_view;
+	bool wants_fullscreen;
+
+	if (argc == 0 || strcmp(argv[0], "toggle") == 0) {
+		wants_fullscreen = !view->is_fullscreen;
+	} else if (strcmp(argv[0], "enable") == 0) {
+		wants_fullscreen = true;
+	} else if (strcmp(argv[0], "disable") == 0) {
+		wants_fullscreen = false;
+	} else {
+		return cmd_results_new(CMD_INVALID, "fullscreen",
+				"Expected 'fullscreen' or 'fullscreen <enable|disable|toggle>'");
+	}
+
+	view_set_fullscreen(view, wants_fullscreen);
+
+	return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}

sway/desktop/output.c

@@ -22,6 +22,7 @@
 #include "sway/tree/container.h"
 #include "sway/tree/layout.h"
 #include "sway/tree/view.h"
+#include "sway/tree/workspace.h"
 
 struct sway_container *output_by_name(const char *name) {
 	for (int i = 0; i < root_container.children->length; ++i) {
@@ -228,7 +229,11 @@ static void render_container_iterator(struct sway_container *con,
 
 static void render_container(struct sway_output *output,
 		struct sway_container *con) {
-	container_descendants(con, C_VIEW, render_container_iterator, output);
+	if (con->type == C_VIEW) { // Happens if a view is fullscreened
+		render_container_iterator(con, output);
+	} else {
+		container_descendants(con, C_VIEW, render_container_iterator, output);
+	}
 }
 
 static struct sway_container *output_get_active_workspace(
@@ -270,19 +275,26 @@ static void render_output(struct sway_output *output, struct timespec *when,
 	wlr_output_transformed_resolution(wlr_output, &width, &height);
 	pixman_region32_union_rect(damage, damage, 0, 0, width, height);
 
-	float clear_color[] = {0.25f, 0.25f, 0.25f, 1.0f};
-	wlr_renderer_clear(renderer, clear_color);
-
-	render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
-	render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
-
 	struct sway_container *workspace = output_get_active_workspace(output);
-	render_container(output, workspace);
 
-	render_unmanaged(output, &root_container.sway_root->xwayland_unmanaged);
+	if (workspace->sway_workspace->fullscreen) {
+		float clear_color[] = {0.0f, 0.0f, 0.0f, 1.0f};
+		wlr_renderer_clear(renderer, clear_color);
+		// TODO: handle views smaller than the output
+		render_container(output, workspace->sway_workspace->fullscreen->swayc);
+	} else {
+		float clear_color[] = {0.25f, 0.25f, 0.25f, 1.0f};
+		wlr_renderer_clear(renderer, clear_color);
 
-	// TODO: consider revising this when fullscreen windows are supported
+		render_layer(output,
-	render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
+				&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
+		render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
+
+		render_container(output, workspace);
+
+		render_unmanaged(output, &root_container.sway_root->xwayland_unmanaged);
+		render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
+	}
 	render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
 
 renderer_end:
@@ -462,6 +474,12 @@ void output_damage_view(struct sway_output *output, struct sway_view *view,
 		return;
 	}
 
+	struct sway_container *workspace = container_parent(view->swayc,
+			C_WORKSPACE);
+	if (workspace->sway_workspace->fullscreen && !view->is_fullscreen) {
+		return;
+	}
+
 	struct damage_data data = {
 		.output = output,
 		.whole = whole,

sway/desktop/wl_shell.c

@@ -61,14 +61,21 @@ static void destroy(struct sway_view *view) {
 	}
 	wl_list_remove(&wl_shell_view->commit.link);
 	wl_list_remove(&wl_shell_view->destroy.link);
+	wl_list_remove(&wl_shell_view->request_fullscreen.link);
+	wl_list_remove(&wl_shell_view->set_state.link);
 	free(wl_shell_view);
 }
 
+static void set_fullscreen(struct sway_view *view, bool fullscreen) {
+	// TODO
+}
+
 static const struct sway_view_impl view_impl = {
 	.get_prop = get_prop,
 	.configure = configure,
 	.close = _close,
 	.destroy = destroy,
+	.set_fullscreen = set_fullscreen,
 };
 
 static void handle_commit(struct wl_listener *listener, void *data) {
@@ -88,6 +95,23 @@ static void handle_destroy(struct wl_listener *listener, void *data) {
 	view_destroy(&wl_shell_view->view);
 }
 
+static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
+	struct sway_wl_shell_view *wl_shell_view =
+		wl_container_of(listener, wl_shell_view, request_fullscreen);
+	view_set_fullscreen(&wl_shell_view->view, true);
+}
+
+static void handle_set_state(struct wl_listener *listener, void *data) {
+	struct sway_wl_shell_view *wl_shell_view =
+		wl_container_of(listener, wl_shell_view, set_state);
+	struct sway_view *view = &wl_shell_view->view;
+	struct wlr_wl_shell_surface *surface = view->wlr_wl_shell_surface;
+	if (view->is_fullscreen &&
+			surface->state != WLR_WL_SHELL_SURFACE_STATE_FULLSCREEN) {
+		view_set_fullscreen(view, false);
+	}
+}
+
 void handle_wl_shell_surface(struct wl_listener *listener, void *data) {
 	struct sway_server *server = wl_container_of(listener, server,
 		wl_shell_surface);
@@ -127,5 +151,16 @@ void handle_wl_shell_surface(struct wl_listener *listener, void *data) {
 	wl_shell_view->destroy.notify = handle_destroy;
 	wl_signal_add(&shell_surface->events.destroy, &wl_shell_view->destroy);
 
+	wl_shell_view->request_fullscreen.notify = handle_request_fullscreen;
+	wl_signal_add(&shell_surface->events.request_fullscreen,
+			&wl_shell_view->request_fullscreen);
+
+	wl_shell_view->set_state.notify = handle_set_state;
+	wl_signal_add(&shell_surface->events.set_state, &wl_shell_view->set_state);
+
 	view_map(&wl_shell_view->view, shell_surface->surface);
+
+	if (shell_surface->state == WLR_WL_SHELL_SURFACE_STATE_FULLSCREEN) {
+		view_set_fullscreen(&wl_shell_view->view, true);
+	}
 }

sway/desktop/xdg_shell_v6.c

@@ -118,6 +118,14 @@ static void set_activated(struct sway_view *view, bool activated) {
 	}
 }
 
+static void set_fullscreen(struct sway_view *view, bool fullscreen) {
+	if (xdg_shell_v6_view_from_view(view) == NULL) {
+		return;
+	}
+	struct wlr_xdg_surface_v6 *surface = view->wlr_xdg_surface_v6;
+	wlr_xdg_toplevel_v6_set_fullscreen(surface, fullscreen);
+}
+
 static void for_each_surface(struct sway_view *view,
 		wlr_surface_iterator_func_t iterator, void *user_data) {
 	if (xdg_shell_v6_view_from_view(view) == NULL) {
@@ -146,6 +154,7 @@ static void destroy(struct sway_view *view) {
 	wl_list_remove(&xdg_shell_v6_view->destroy.link);
 	wl_list_remove(&xdg_shell_v6_view->map.link);
 	wl_list_remove(&xdg_shell_v6_view->unmap.link);
+	wl_list_remove(&xdg_shell_v6_view->request_fullscreen.link);
 	free(xdg_shell_v6_view);
 }
 
@@ -153,6 +162,7 @@ static const struct sway_view_impl view_impl = {
 	.get_prop = get_prop,
 	.configure = configure,
 	.set_activated = set_activated,
+	.set_fullscreen = set_fullscreen,
 	.for_each_surface = for_each_surface,
 	.close = _close,
 	.destroy = destroy,
@@ -202,6 +212,10 @@ static void handle_map(struct wl_listener *listener, void *data) {
 	xdg_shell_v6_view->new_popup.notify = handle_new_popup;
 	wl_signal_add(&xdg_surface->events.new_popup,
 		&xdg_shell_v6_view->new_popup);
+
+	if (xdg_surface->toplevel->client_pending.fullscreen) {
+		view_set_fullscreen(view, true);
+	}
 }
 
 static void handle_destroy(struct wl_listener *listener, void *data) {
@@ -210,6 +224,23 @@ static void handle_destroy(struct wl_listener *listener, void *data) {
 	view_destroy(&xdg_shell_v6_view->view);
 }
 
+static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
+	struct sway_xdg_shell_v6_view *xdg_shell_v6_view =
+		wl_container_of(listener, xdg_shell_v6_view, request_fullscreen);
+	struct wlr_xdg_toplevel_v6_set_fullscreen_event *e = data;
+
+	if (!sway_assert(xdg_shell_v6_view->view.wlr_xdg_surface_v6->role == WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL,
+				"xdg_shell_v6 requested fullscreen of surface with role %i",
+				xdg_shell_v6_view->view.wlr_xdg_surface_v6->role)) {
+		return;
+	}
+	if (!xdg_shell_v6_view->view.wlr_xdg_surface_v6->mapped) {
+		return;
+	}
+
+	view_set_fullscreen(&xdg_shell_v6_view->view, e->fullscreen);
+}
+
 void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 	struct sway_server *server = wl_container_of(listener, server,
 		xdg_shell_v6_surface);
@@ -246,4 +277,8 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 
 	xdg_shell_v6_view->destroy.notify = handle_destroy;
 	wl_signal_add(&xdg_surface->events.destroy, &xdg_shell_v6_view->destroy);
+
+	xdg_shell_v6_view->request_fullscreen.notify = handle_request_fullscreen;
+	wl_signal_add(&xdg_surface->toplevel->events.request_fullscreen,
+			&xdg_shell_v6_view->request_fullscreen);
 }

sway/desktop/xwayland.c

@@ -179,6 +179,14 @@ static void set_activated(struct sway_view *view, bool activated) {
 	wlr_xwayland_surface_activate(surface, activated);
 }
 
+static void set_fullscreen(struct sway_view *view, bool fullscreen) {
+	if (xwayland_view_from_view(view) == NULL) {
+		return;
+	}
+	struct wlr_xwayland_surface *surface = view->wlr_xwayland_surface;
+	wlr_xwayland_surface_set_fullscreen(surface, fullscreen);
+}
+
 static void _close(struct sway_view *view) {
 	if (xwayland_view_from_view(view) == NULL) {
 		return;
@@ -193,6 +201,7 @@ static void destroy(struct sway_view *view) {
 	}
 	wl_list_remove(&xwayland_view->destroy.link);
 	wl_list_remove(&xwayland_view->request_configure.link);
+	wl_list_remove(&xwayland_view->request_fullscreen.link);
 	wl_list_remove(&xwayland_view->map.link);
 	wl_list_remove(&xwayland_view->unmap.link);
 	free(xwayland_view);
@@ -202,6 +211,7 @@ static const struct sway_view_impl view_impl = {
 	.get_prop = get_prop,
 	.configure = configure,
 	.set_activated = set_activated,
+	.set_fullscreen = set_fullscreen,
 	.close = _close,
 	.destroy = destroy,
 };
@@ -238,6 +248,10 @@ static void handle_map(struct wl_listener *listener, void *data) {
 	// Put it back into the tree
 	wlr_xwayland_surface_set_maximized(xsurface, true);
 	view_map(view, xsurface->surface);
+
+	if (xsurface->fullscreen) {
+		view_set_fullscreen(view, true);
+	}
 }
 
 static void handle_destroy(struct wl_listener *listener, void *data) {
@@ -263,6 +277,14 @@ static void handle_request_configure(struct wl_listener *listener, void *data) {
 		ev->width, ev->height);
 }
 
+static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
+	struct sway_xwayland_view *xwayland_view =
+		wl_container_of(listener, xwayland_view, request_fullscreen);
+	struct sway_view *view = &xwayland_view->view;
+	struct wlr_xwayland_surface *xsurface = view->wlr_xwayland_surface;
+	view_set_fullscreen(view, xsurface->fullscreen);
+}
+
 void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	struct sway_server *server = wl_container_of(listener, server,
 		xwayland_surface);
@@ -298,6 +320,10 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 		&xwayland_view->request_configure);
 	xwayland_view->request_configure.notify = handle_request_configure;
 
+	wl_signal_add(&xsurface->events.request_fullscreen,
+		&xwayland_view->request_fullscreen);
+	xwayland_view->request_fullscreen.notify = handle_request_fullscreen;
+
 	wl_signal_add(&xsurface->events.unmap, &xwayland_view->unmap);
 	xwayland_view->unmap.notify = handle_unmap;
 

sway/input/cursor.c

@@ -12,6 +12,7 @@
 #include "sway/layers.h"
 #include "sway/output.h"
 #include "sway/tree/view.h"
+#include "sway/tree/workspace.h"
 #include "wlr-layer-shell-unstable-v1-protocol.h"
 
 static struct wlr_surface *layer_surface_at(struct sway_output *output,
@@ -83,6 +84,16 @@ static struct sway_container *container_at_cursor(struct sway_cursor *cursor,
 				ox, oy, sx, sy))) {
 		return ws;
 	}
+	if (ws->sway_workspace->fullscreen) {
+		struct wlr_surface *wlr_surface = ws->sway_workspace->fullscreen->surface;
+		if (wlr_surface_point_accepts_input(wlr_surface, ox, oy)) {
+			*sx = ox;
+			*sy = oy;
+			*surface = wlr_surface;
+			return ws->sway_workspace->fullscreen->swayc;
+		}
+		return NULL;
+	}
 	if ((*surface = layer_surface_at(output,
 				&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
 				ox, oy, sx, sy))) {

sway/input/seat.c

@@ -18,6 +18,7 @@
 #include "sway/output.h"
 #include "sway/tree/container.h"
 #include "sway/tree/view.h"
+#include "sway/tree/workspace.h"
 #include "log.h"
 
 static void seat_device_destroy(struct sway_seat_device *seat_device) {
@@ -448,6 +449,21 @@ void seat_set_focus_warp(struct sway_seat *seat,
 		return;
 	}
 
+	struct sway_container *last_workspace = last_focus;
+	if (last_workspace && last_workspace->type != C_WORKSPACE) {
+		last_workspace = container_parent(last_workspace, C_WORKSPACE);
+	}
+	struct sway_container *new_workspace = container;
+	if (new_workspace && new_workspace->type != C_WORKSPACE) {
+		new_workspace = container_parent(new_workspace, C_WORKSPACE);
+	}
+
+	if (last_workspace && last_workspace == new_workspace
+			&& last_workspace->sway_workspace->fullscreen
+			&& !container->sway_view->is_fullscreen) {
+		return;
+	}
+
 	struct sway_container *last_output = last_focus;
 	if (last_output && last_output->type != C_OUTPUT) {
 		last_output = container_parent(last_output, C_OUTPUT);

sway/meson.build

@@ -34,6 +34,7 @@ sway_sources = files(
 	'commands/exec_always.c',
 	'commands/focus.c',
 	'commands/focus_follows_mouse.c',
+	'commands/fullscreen.c',
 	'commands/kill.c',
 	'commands/opacity.c',
 	'commands/include.c',

sway/tree/container.c

@@ -197,6 +197,7 @@ static struct sway_container *container_workspace_destroy(
 		}
 	}
 
+	free(workspace->sway_workspace);
 	_container_destroy(workspace);
 
 	output_damage_whole(output->sway_output);

sway/tree/layout.c

@@ -82,6 +82,37 @@ static int index_child(const struct sway_container *child) {
 	return i;
 }
 
+static void container_handle_fullscreen_reparent(struct sway_container *viewcon,
+		struct sway_container *old_parent) {
+	if (viewcon->type != C_VIEW || !viewcon->sway_view->is_fullscreen) {
+		return;
+	}
+	struct sway_view *view = viewcon->sway_view;
+	struct sway_container *old_workspace = old_parent;
+	if (old_workspace && old_workspace->type != C_WORKSPACE) {
+		old_workspace = container_parent(old_workspace, C_WORKSPACE);
+	}
+	struct sway_container *new_workspace = container_parent(view->swayc,
+			C_WORKSPACE);
+	if (old_workspace == new_workspace) {
+		return;
+	}
+	// Unmark the old workspace as fullscreen
+	if (old_workspace) {
+		old_workspace->sway_workspace->fullscreen = NULL;
+	}
+
+	// Mark the new workspace as fullscreen
+	if (new_workspace->sway_workspace->fullscreen) {
+		view_set_fullscreen(new_workspace->sway_workspace->fullscreen, false);
+	}
+	new_workspace->sway_workspace->fullscreen = view;
+	// Resize view to new output dimensions
+	struct sway_output *output = new_workspace->parent->sway_output;
+	view_configure(view, 0, 0,
+			output->wlr_output->width, output->wlr_output->height);
+}
+
 void container_insert_child(struct sway_container *parent,
 		struct sway_container *child, int i) {
 	struct sway_container *old_parent = child->parent;
@@ -91,6 +122,7 @@ void container_insert_child(struct sway_container *parent,
 	wlr_log(L_DEBUG, "Inserting id:%zd at index %d", child->id, i);
 	list_insert(parent->children, i, child);
 	child->parent = parent;
+	container_handle_fullscreen_reparent(child, old_parent);
 	wl_signal_emit(&child->events.reparent, old_parent);
 }
 
@@ -106,6 +138,7 @@ struct sway_container *container_add_sibling(struct sway_container *fixed,
 	int i = index_child(fixed);
 	list_insert(parent->children, i + 1, active);
 	active->parent = parent;
+	container_handle_fullscreen_reparent(active, old_parent);
 	wl_signal_emit(&active->events.reparent, old_parent);
 	return active->parent;
 }
@@ -115,11 +148,18 @@ void container_add_child(struct sway_container *parent,
 	wlr_log(L_DEBUG, "Adding %p (%d, %fx%f) to %p (%d, %fx%f)",
 			child, child->type, child->width, child->height,
 			parent, parent->type, parent->width, parent->height);
+	struct sway_container *old_parent = child->parent;
 	list_add(parent->children, child);
+	container_handle_fullscreen_reparent(child, old_parent);
 	child->parent = parent;
 }
 
 struct sway_container *container_remove_child(struct sway_container *child) {
+	if (child->type == C_VIEW && child->sway_view->is_fullscreen) {
+		struct sway_container *workspace = container_parent(child, C_WORKSPACE);
+		workspace->sway_workspace->fullscreen = NULL;
+	}
+
 	struct sway_container *parent = child->parent;
 	for (int i = 0; i < parent->children->length; ++i) {
 		if (parent->children->items[i] == child) {
@@ -164,6 +204,26 @@ void container_move_to(struct sway_container *container,
 		arrange_windows(old_parent, -1, -1);
 	}
 	arrange_windows(new_parent, -1, -1);
+	// If view was moved to a fullscreen workspace, refocus the fullscreen view
+	struct sway_container *new_workspace = container;
+	if (new_workspace->type != C_WORKSPACE) {
+		new_workspace = container_parent(new_workspace, C_WORKSPACE);
+	}
+	if (new_workspace->sway_workspace->fullscreen) {
+		struct sway_seat *seat;
+		struct sway_container *focus, *focus_ws;
+		wl_list_for_each(seat, &input_manager->seats, link) {
+			focus = seat_get_focus(seat);
+			focus_ws = focus;
+			if (focus_ws->type != C_WORKSPACE) {
+				focus_ws = container_parent(focus_ws, C_WORKSPACE);
+			}
+			seat_set_focus(seat, new_workspace->sway_workspace->fullscreen->swayc);
+			if (focus_ws != new_workspace) {
+				seat_set_focus(seat, focus);
+			}
+		}
+	}
 }
 
 static bool sway_dir_to_wlr(enum movement_direction dir,
@@ -268,6 +328,11 @@ void container_move(struct sway_container *container,
 	struct sway_container *current = container;
 	struct sway_container *parent = current->parent;
 
+	// If moving a fullscreen view, only consider outputs
+	if (container->type == C_VIEW && container->sway_view->is_fullscreen) {
+		current = container_parent(container, C_OUTPUT);
+	}
+
 	if (parent != container_flatten(parent)) {
 		// Special case: we were the last one in this container, so flatten it
 		// and leave
@@ -568,6 +633,11 @@ void arrange_windows(struct sway_container *container,
 			container->y = y = area->y;
 			wlr_log(L_DEBUG, "Arranging workspace '%s' at %f, %f",
 					container->name, container->x, container->y);
+			if (container->sway_workspace->fullscreen) {
+				view_configure(container->sway_workspace->fullscreen, 0, 0,
+						output->width, output->height);
+				return;
+			}
 		}
 		// children are properly handled below
 		break;
@@ -816,35 +886,27 @@ static struct sway_container *sway_output_from_wlr(struct wlr_output *output) {
 struct sway_container *container_get_in_direction(
 		struct sway_container *container, struct sway_seat *seat,
 		enum movement_direction dir) {
-	if (dir == MOVE_CHILD) {
-		return seat_get_focus_inactive(seat, container);
-	}
-
 	struct sway_container *parent = container->parent;
-	if (dir == MOVE_PARENT) {
+
-		if (parent->type == C_OUTPUT) {
+	if (container->type == C_VIEW && container->sway_view->is_fullscreen) {
+		if (dir == MOVE_PARENT || dir == MOVE_CHILD) {
 			return NULL;
-		} else {
+		}
-			return parent;
+		container = container_parent(container, C_OUTPUT);
+		parent = container->parent;
+	} else {
+		if (dir == MOVE_CHILD) {
+			return seat_get_focus_inactive(seat, container);
+		}
+		if (dir == MOVE_PARENT) {
+			if (parent->type == C_OUTPUT) {
+				return NULL;
+			} else {
+				return parent;
+			}
 		}
 	}
 
-	// TODO WLR fullscreen
-	/*
-	if (container->type == C_VIEW && swayc_is_fullscreen(container)) {
-		wlr_log(L_DEBUG, "Moving from fullscreen view, skipping to output");
-		container = container_parent(container, C_OUTPUT);
-		get_layout_center_position(container, &abs_pos);
-		struct sway_container *output =
-		swayc_adjacent_output(container, dir, &abs_pos, true);
-		return get_swayc_in_output_direction(output, dir);
-	}
-	if (container->type == C_WORKSPACE && container->fullscreen) {
-		sway_log(L_DEBUG, "Moving to fullscreen view");
-		return container->fullscreen;
-	}
-	*/
-
 	struct sway_container *wrap_candidate = NULL;
 	while (true) {
 		bool can_move = false;
@@ -874,6 +936,14 @@ struct sway_container *container_get_in_direction(
 			if (next == NULL) {
 				return NULL;
 			}
+			struct sway_container *next_workspace = next;
+			if (next_workspace->type != C_WORKSPACE) {
+				next_workspace = container_parent(next_workspace, C_WORKSPACE);
+			}
+			sway_assert(next_workspace, "Next container has no workspace");
+			if (next_workspace->sway_workspace->fullscreen) {
+				return next_workspace->sway_workspace->fullscreen->swayc;
+			}
 			if (next->children && next->children->length) {
 				// TODO consider floating children as well
 				return seat_get_focus_inactive_view(seat, next);

sway/tree/view.c

@@ -2,10 +2,12 @@
 #include <wayland-server.h>
 #include <wlr/types/wlr_output_layout.h>
 #include "log.h"
+#include "sway/ipc-server.h"
 #include "sway/output.h"
 #include "sway/tree/container.h"
 #include "sway/tree/layout.h"
 #include "sway/tree/view.h"
+#include "sway/tree/workspace.h"
 
 void view_init(struct sway_view *view, enum sway_view_type type,
 		const struct sway_view_impl *impl) {
@@ -73,6 +75,50 @@ void view_set_activated(struct sway_view *view, bool activated) {
 	}
 }
 
+void view_set_fullscreen(struct sway_view *view, bool fullscreen) {
+	if (view->is_fullscreen == fullscreen) {
+		return;
+	}
+
+	struct sway_container *workspace = container_parent(view->swayc, C_WORKSPACE);
+	struct sway_container *container = container_parent(workspace, C_OUTPUT);
+	struct sway_output *output = container->sway_output;
+
+	if (view->impl->set_fullscreen) {
+		view->impl->set_fullscreen(view, fullscreen);
+	}
+
+	view->is_fullscreen = fullscreen;
+
+	if (fullscreen) {
+		if (workspace->sway_workspace->fullscreen) {
+			view_set_fullscreen(workspace->sway_workspace->fullscreen, false);
+		}
+		workspace->sway_workspace->fullscreen = view;
+
+		struct sway_seat *seat;
+		struct sway_container *focus, *focus_ws;
+		wl_list_for_each(seat, &input_manager->seats, link) {
+			focus = seat_get_focus(seat);
+			focus_ws = focus;
+			if (focus_ws->type != C_WORKSPACE) {
+				focus_ws = container_parent(focus_ws, C_WORKSPACE);
+			}
+			seat_set_focus(seat, view->swayc);
+			if (focus_ws != workspace) {
+				seat_set_focus(seat, focus);
+			}
+		}
+	} else {
+		workspace->sway_workspace->fullscreen = NULL;
+	}
+
+	arrange_windows(workspace, -1, -1);
+	output_damage_whole(output);
+
+	ipc_event_window(view->swayc, "fullscreen_mode");
+}
+
 void view_close(struct sway_view *view) {
 	if (view->impl->close) {
 		view->impl->close(view);
@@ -197,6 +243,11 @@ void view_unmap(struct sway_view *view) {
 
 	wl_signal_emit(&view->events.unmap, view);
 
+	if (view->is_fullscreen) {
+		struct sway_container *ws = container_parent(view->swayc, C_WORKSPACE);
+		ws->sway_workspace->fullscreen = NULL;
+	}
+
 	view_damage(view, true);
 
 	wl_list_remove(&view->surface_new_subsurface.link);

sway/tree/workspace.c

@@ -59,6 +59,13 @@ struct sway_container *workspace_create(struct sway_container *output,
 	workspace->layout = container_get_default_layout(output);
 	workspace->workspace_layout = workspace->layout;
 
+	struct sway_workspace *swayws = calloc(1, sizeof(struct sway_workspace));
+	if (!swayws) {
+		return NULL;
+	}
+	swayws->swayc = workspace;
+	workspace->sway_workspace = swayws;
+
 	container_add_child(output, workspace);
 	container_sort_workspaces(output);
 	container_create_notify(workspace);