xdg-shell stable: copy-pasta implementation

include/rootston/desktop.h

@@ -15,6 +15,7 @@
 #include <wlr/types/wlr_wl_shell.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/types/wlr_xdg_shell.h>
 #include "rootston/config.h"
 #include "rootston/output.h"
 #include "rootston/view.h"
@@ -34,6 +35,7 @@ struct roots_desktop {
 	struct wlr_compositor *compositor;
 	struct wlr_wl_shell *wl_shell;
 	struct wlr_xdg_shell_v6 *xdg_shell_v6;
+	struct wlr_xdg_shell *xdg_shell;
 	struct wlr_gamma_control_manager *gamma_control_manager;
 	struct wlr_screenshooter *screenshooter;
 	struct wlr_server_decoration_manager *server_decoration_manager;
@@ -43,6 +45,7 @@ struct roots_desktop {
 	struct wl_listener new_output;
 	struct wl_listener layout_change;
 	struct wl_listener xdg_shell_v6_surface;
+	struct wl_listener xdg_shell_surface;
 	struct wl_listener wl_shell_surface;
 	struct wl_listener decoration_new;
 
@@ -72,6 +75,7 @@ void view_update_position(struct roots_view *view, double x, double y);
 void view_update_size(struct roots_view *view, uint32_t width, uint32_t height);
 
 void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data);
+void handle_xdg_shell_surface(struct wl_listener *listener, void *data);
 void handle_wl_shell_surface(struct wl_listener *listener, void *data);
 void handle_xwayland_surface(struct wl_listener *listener, void *data);
 

include/rootston/view.h

@@ -6,6 +6,7 @@
 #include <wlr/types/wlr_box.h>
 #include <wlr/types/wlr_surface.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/types/wlr_xdg_shell.h>
 
 struct roots_wl_shell_surface {
 	struct roots_view *view;
@@ -36,6 +37,21 @@ struct roots_xdg_surface_v6 {
 	uint32_t pending_move_resize_configure_serial;
 };
 
+struct roots_xdg_surface {
+	struct roots_view *view;
+
+	struct wl_listener destroy;
+	struct wl_listener new_popup;
+	struct wl_listener request_move;
+	struct wl_listener request_resize;
+	struct wl_listener request_maximize;
+	struct wl_listener request_fullscreen;
+
+	struct wl_listener surface_commit;
+
+	uint32_t pending_move_resize_configure_serial;
+};
+
 struct roots_xwayland_surface {
 	struct roots_view *view;
 
@@ -54,6 +70,7 @@ struct roots_xwayland_surface {
 enum roots_view_type {
 	ROOTS_WL_SHELL_VIEW,
 	ROOTS_XDG_SHELL_V6_VIEW,
+	ROOTS_XDG_SHELL_VIEW,
 #ifdef WLR_HAS_XWAYLAND
 	ROOTS_XWAYLAND_VIEW,
 #endif
@@ -90,6 +107,7 @@ struct roots_view {
 	union {
 		struct wlr_wl_shell_surface *wl_shell_surface;
 		struct wlr_xdg_surface_v6 *xdg_surface_v6;
+		struct wlr_xdg_surface *xdg_surface;
 #ifdef WLR_HAS_XWAYLAND
 		struct wlr_xwayland_surface *xwayland_surface;
 #endif
@@ -97,6 +115,7 @@ struct roots_view {
 	union {
 		struct roots_wl_shell_surface *roots_wl_shell_surface;
 		struct roots_xdg_surface_v6 *roots_xdg_surface_v6;
+		struct roots_xdg_surface *roots_xdg_surface;
 #ifdef WLR_HAS_XWAYLAND
 		struct roots_xwayland_surface *roots_xwayland_surface;
 #endif
@@ -154,6 +173,13 @@ struct roots_xdg_popup_v6 {
 	struct wl_listener new_popup;
 };
 
+struct roots_xdg_popup {
+	struct roots_view_child view_child;
+	struct wlr_xdg_popup *wlr_popup;
+	struct wl_listener destroy;
+	struct wl_listener new_popup;
+};
+
 void view_get_box(const struct roots_view *view, struct wlr_box *box);
 void view_activate(struct roots_view *view, bool active);
 void view_move(struct roots_view *view, double x, double y);

include/wlr/types/wlr_xdg_shell.h

@@ -0,0 +1,232 @@
+#ifndef WLR_TYPES_WLR_XDG_SHELL_H
+#define WLR_TYPES_WLR_XDG_SHELL_H
+
+#include <wlr/types/wlr_box.h>
+#include <wlr/types/wlr_seat.h>
+#include <wayland-server.h>
+
+struct wlr_xdg_shell {
+	struct wl_global *wl_global;
+	struct wl_list clients;
+	struct wl_list popup_grabs;
+	uint32_t ping_timeout;
+
+	struct wl_listener display_destroy;
+
+	struct {
+		struct wl_signal new_surface;
+	} events;
+
+	void *data;
+};
+
+struct wlr_xdg_client {
+	struct wlr_xdg_shell *shell;
+	struct wl_resource *resource;
+	struct wl_client *client;
+	struct wl_list surfaces;
+
+	struct wl_list link; // wlr_xdg_shell::clients
+
+	uint32_t ping_serial;
+	struct wl_event_source *ping_timer;
+};
+
+struct wlr_xdg_popup {
+	struct wlr_xdg_surface *base;
+	struct wl_list link;
+
+	struct wl_resource *resource;
+	bool committed;
+	struct wlr_xdg_surface *parent;
+	struct wlr_seat *seat;
+	struct wlr_box geometry;
+
+	struct wl_list grab_link; // wlr_xdg_popup_grab::popups
+};
+
+// each seat gets a popup grab
+struct wlr_xdg_popup_grab {
+	struct wl_client *client;
+	struct wlr_seat_pointer_grab pointer_grab;
+	struct wlr_seat_keyboard_grab keyboard_grab;
+	struct wlr_seat *seat;
+	struct wl_list popups;
+	struct wl_list link; // wlr_xdg_shell::popup_grabs
+};
+
+enum wlr_xdg_surface_role {
+	WLR_XDG_SURFACE_ROLE_NONE,
+	WLR_XDG_SURFACE_ROLE_TOPLEVEL,
+	WLR_XDG_SURFACE_ROLE_POPUP,
+};
+
+struct wlr_xdg_toplevel_state {
+	bool maximized;
+	bool fullscreen;
+	bool resizing;
+	bool activated;
+
+	uint32_t width;
+	uint32_t height;
+
+	uint32_t max_width;
+	uint32_t max_height;
+
+	uint32_t min_width;
+	uint32_t min_height;
+};
+
+struct wlr_xdg_toplevel {
+	struct wl_resource *resource;
+	struct wlr_xdg_surface *base;
+	struct wlr_xdg_surface *parent;
+	bool added;
+	struct wlr_xdg_toplevel_state next; // client protocol requests
+	struct wlr_xdg_toplevel_state pending; // user configure requests
+	struct wlr_xdg_toplevel_state current;
+};
+
+struct wlr_xdg_surface_configure {
+	struct wl_list link; // wlr_xdg_surface::configure_list
+	uint32_t serial;
+	struct wlr_xdg_toplevel_state state;
+};
+
+struct wlr_xdg_surface {
+	struct wlr_xdg_client *client;
+	struct wl_resource *resource;
+	struct wlr_surface *surface;
+	struct wl_list link; // wlr_xdg_client::surfaces
+	enum wlr_xdg_surface_role role;
+
+	union {
+		struct wlr_xdg_toplevel *toplevel_state;
+		struct wlr_xdg_popup *popup_state;
+	};
+
+	struct wl_list popups; // wlr_xdg_popup::link
+
+	bool configured;
+	bool added;
+	uint32_t configure_serial;
+	struct wl_event_source *configure_idle;
+	uint32_t configure_next_serial;
+	struct wl_list configure_list;
+
+	char *title;
+	char *app_id;
+
+	bool has_next_geometry;
+	struct wlr_box *next_geometry;
+	struct wlr_box *geometry;
+
+	struct wl_listener surface_destroy_listener;
+
+	struct {
+		struct wl_signal destroy;
+		struct wl_signal ping_timeout;
+		struct wl_signal new_popup;
+
+		struct wl_signal request_maximize;
+		struct wl_signal request_fullscreen;
+		struct wl_signal request_minimize;
+		struct wl_signal request_move;
+		struct wl_signal request_resize;
+		struct wl_signal request_show_window_menu;
+	} events;
+
+	void *data;
+};
+
+struct wlr_xdg_toplevel_move_event {
+	struct wlr_xdg_surface *surface;
+	struct wlr_seat_client *seat;
+	uint32_t serial;
+};
+
+struct wlr_xdg_toplevel_resize_event {
+	struct wlr_xdg_surface *surface;
+	struct wlr_seat_client *seat;
+	uint32_t serial;
+	uint32_t edges;
+};
+
+struct wlr_xdg_toplevel_set_fullscreen_event {
+	struct wlr_xdg_surface *surface;
+	bool fullscreen;
+	struct wlr_output *output;
+};
+
+struct wlr_xdg_toplevel_show_window_menu_event {
+	struct wlr_xdg_surface *surface;
+	struct wlr_seat_client *seat;
+	uint32_t serial;
+	uint32_t x, y;
+};
+
+struct wlr_xdg_shell *wlr_xdg_shell_create(struct wl_display *display);
+void wlr_xdg_shell_destroy(struct wlr_xdg_shell *xdg_shell);
+
+/**
+ * Send a ping to the surface. If the surface does not respond in a reasonable
+ * amount of time, the ping_timeout event will be emitted.
+ */
+void wlr_xdg_surface_ping(struct wlr_xdg_surface *surface);
+
+/**
+ * Request that this toplevel surface be the given size. Returns the associated
+ * configure serial.
+ */
+uint32_t wlr_xdg_toplevel_set_size(struct wlr_xdg_surface *surface,
+		uint32_t width, uint32_t height);
+
+/**
+ * Request that this toplevel surface show itself in an activated or deactivated
+ * state. Returns the associated configure serial.
+ */
+uint32_t wlr_xdg_toplevel_set_activated(struct wlr_xdg_surface *surface,
+		bool activated);
+
+/**
+ * Request that this toplevel surface consider itself maximized or not
+ * maximized. Returns the associated configure serial.
+ */
+uint32_t wlr_xdg_toplevel_set_maximized(struct wlr_xdg_surface *surface,
+		bool maximized);
+
+/**
+ * Request that this toplevel surface consider itself fullscreen or not
+ * fullscreen. Returns the associated configure serial.
+ */
+uint32_t wlr_xdg_toplevel_set_fullscreen(struct wlr_xdg_surface *surface,
+		bool fullscreen);
+
+/**
+ * Request that this toplevel surface consider itself to be resizing or not
+ * resizing. Returns the associated configure serial.
+ */
+uint32_t wlr_xdg_toplevel_set_resizing(struct wlr_xdg_surface *surface,
+		bool resizing);
+
+/**
+ * Request that this toplevel surface closes.
+ */
+void wlr_xdg_toplevel_send_close(struct wlr_xdg_surface *surface);
+
+/**
+ * Compute the popup position in surface-local coordinates.
+ */
+void wlr_xdg_surface_popup_get_position(struct wlr_xdg_surface *surface,
+		double *popup_sx, double *popup_sy);
+
+/**
+ * Find a popup within this surface at the surface-local coordinates. Returns
+ * the popup and coordinates in the topmost surface coordinate system or NULL if
+ * no popup is found at that location.
+ */
+struct wlr_xdg_surface *wlr_xdg_surface_popup_at(
+		struct wlr_xdg_surface *surface, double sx, double sy,
+		double *popup_sx, double *popup_sy);
+
+#endif

protocol/meson.build

@@ -22,6 +22,7 @@ wayland_scanner_client = generator(
 
 protocols = [
 	[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
+	[wl_protocol_dir, 'stable/xdg-shell/xdg-shell.xml'],
 	'gamma-control.xml',
 	'gtk-primary-selection.xml',
 	'idle.xml',
@@ -31,6 +32,7 @@ protocols = [
 
 client_protocols = [
 	[wl_protocol_dir, 'unstable/xdg-shell/xdg-shell-unstable-v6.xml'],
+	[wl_protocol_dir, 'stable/xdg-shell/xdg-shell.xml'],
 	'gamma-control.xml',
 	'gtk-primary-selection.xml',
 	'idle.xml',

rootston/desktop.c

@@ -15,6 +15,7 @@
 #include <wlr/types/wlr_wl_shell.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/types/wlr_xdg_shell.h>
 #include <wlr/util/log.h>
 #include "rootston/seat.h"
 #include "rootston/server.h"
@@ -639,6 +640,11 @@ struct roots_desktop *desktop_create(struct roots_server *server,
 		&desktop->xdg_shell_v6_surface);
 	desktop->xdg_shell_v6_surface.notify = handle_xdg_shell_v6_surface;
 
+	desktop->xdg_shell = wlr_xdg_shell_create(server->wl_display);
+	wl_signal_add(&desktop->xdg_shell->events.new_surface,
+		&desktop->xdg_shell_surface);
+	desktop->xdg_shell_surface.notify = handle_xdg_shell_surface;
+
 	desktop->wl_shell = wlr_wl_shell_create(server->wl_display);
 	wl_signal_add(&desktop->wl_shell->events.new_surface,
 		&desktop->wl_shell_surface);

rootston/meson.build

@@ -10,6 +10,7 @@ sources = [
 	'seat.c',
 	'wl_shell.c',
 	'xdg_shell_v6.c',
+	'xdg_shell.c',
 ]
 if get_option('enable_xwayland')
 	sources += ['xwayland.c']

rootston/output.c

@@ -8,6 +8,7 @@
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_wl_shell.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
+#include <wlr/types/wlr_xdg_shell.h>
 #include <wlr/util/log.h>
 #include <wlr/util/region.h>
 #include "rootston/config.h"
@@ -81,6 +82,34 @@ static void xdg_surface_v6_for_each_surface(struct wlr_xdg_surface_v6 *surface,
 	}
 }
 
+static void xdg_surface_for_each_surface(struct wlr_xdg_surface *surface,
+		double base_x, double base_y, float rotation,
+		surface_iterator_func_t iterator, void *user_data) {
+	double width = surface->surface->current->width;
+	double height = surface->surface->current->height;
+
+	struct wlr_xdg_popup *popup_state;
+	wl_list_for_each(popup_state, &surface->popups, link) {
+		struct wlr_xdg_surface *popup = popup_state->base;
+		if (!popup->configured) {
+			continue;
+		}
+
+		double popup_width = popup->surface->current->width;
+		double popup_height = popup->surface->current->height;
+
+		double popup_sx, popup_sy;
+		wlr_xdg_surface_popup_get_position(popup, &popup_sx, &popup_sy);
+		rotate_child_position(&popup_sx, &popup_sy, popup_width, popup_height,
+			width, height, rotation);
+
+		surface_for_each_surface(popup->surface, base_x + popup_sx,
+			base_y + popup_sy, rotation, iterator, user_data);
+		xdg_surface_for_each_surface(popup, base_x + popup_sx,
+			base_y + popup_sy, rotation, iterator, user_data);
+	}
+}
+
 static void wl_shell_surface_for_each_surface(
 		struct wlr_wl_shell_surface *surface, double lx, double ly,
 		float rotation, bool is_child, surface_iterator_func_t iterator,
@@ -117,6 +146,12 @@ static void view_for_each_surface(struct roots_view *view,
 		xdg_surface_v6_for_each_surface(view->xdg_surface_v6, view->x, view->y,
 			view->rotation, iterator, user_data);
 		break;
+	case ROOTS_XDG_SHELL_VIEW:
+		surface_for_each_surface(view->wlr_surface, view->x, view->y,
+			view->rotation, iterator, user_data);
+		xdg_surface_for_each_surface(view->xdg_surface, view->x, view->y,
+			view->rotation, iterator, user_data);
+		break;
 	case ROOTS_WL_SHELL_VIEW:
 		wl_shell_surface_for_each_surface(view->wl_shell_surface, view->x,
 			view->y, view->rotation, false, iterator, user_data);
@@ -337,6 +372,8 @@ static bool has_standalone_surface(struct roots_view *view) {
 	switch (view->type) {
 	case ROOTS_XDG_SHELL_V6_VIEW:
 		return wl_list_empty(&view->xdg_surface_v6->popups);
+	case ROOTS_XDG_SHELL_VIEW:
+		return wl_list_empty(&view->xdg_surface->popups);
 	case ROOTS_WL_SHELL_VIEW:
 		return wl_list_empty(&view->wl_shell_surface->popups);
 #ifdef WLR_HAS_XWAYLAND

rootston/xdg_shell.c

@@ -0,0 +1,363 @@
+#include <assert.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_box.h>
+#include <wlr/types/wlr_surface.h>
+#include <wlr/types/wlr_xdg_shell.h>
+#include <wlr/util/log.h>
+#include "rootston/desktop.h"
+#include "rootston/input.h"
+#include "rootston/server.h"
+
+static void popup_destroy(struct roots_view_child *child) {
+	assert(child->destroy == popup_destroy);
+	struct roots_xdg_popup *popup = (struct roots_xdg_popup *)child;
+	if (popup == NULL) {
+		return;
+	}
+	wl_list_remove(&popup->destroy.link);
+	wl_list_remove(&popup->new_popup.link);
+	view_child_finish(&popup->view_child);
+	free(popup);
+}
+
+static void popup_handle_destroy(struct wl_listener *listener, void *data) {
+	struct roots_xdg_popup *popup =
+		wl_container_of(listener, popup, destroy);
+	popup_destroy((struct roots_view_child *)popup);
+}
+
+static struct roots_xdg_popup *popup_create(struct roots_view *view,
+	struct wlr_xdg_popup *wlr_popup);
+
+static void popup_handle_new_popup(struct wl_listener *listener, void *data) {
+	struct roots_xdg_popup *popup =
+		wl_container_of(listener, popup, new_popup);
+	struct wlr_xdg_popup *wlr_popup = data;
+	popup_create(popup->view_child.view, wlr_popup);
+}
+
+static struct roots_xdg_popup *popup_create(struct roots_view *view,
+		struct wlr_xdg_popup *wlr_popup) {
+	struct roots_xdg_popup *popup =
+		calloc(1, sizeof(struct roots_xdg_popup));
+	if (popup == NULL) {
+		return NULL;
+	}
+	popup->wlr_popup = wlr_popup;
+	popup->view_child.destroy = popup_destroy;
+	view_child_init(&popup->view_child, view, wlr_popup->base->surface);
+	popup->destroy.notify = popup_handle_destroy;
+	wl_signal_add(&wlr_popup->base->events.destroy, &popup->destroy);
+	popup->new_popup.notify = popup_handle_new_popup;
+	wl_signal_add(&wlr_popup->base->events.new_popup, &popup->new_popup);
+	return popup;
+}
+
+
+static void get_size(const struct roots_view *view, struct wlr_box *box) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+
+	if (surface->geometry->width > 0 && surface->geometry->height > 0) {
+		box->width = surface->geometry->width;
+		box->height = surface->geometry->height;
+	} else {
+		box->width = view->wlr_surface->current->width;
+		box->height = view->wlr_surface->current->height;
+	}
+}
+
+static void activate(struct roots_view *view, bool active) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		wlr_xdg_toplevel_set_activated(surface, active);
+	}
+}
+
+static void apply_size_constraints(struct wlr_xdg_surface *surface,
+		uint32_t width, uint32_t height, uint32_t *dest_width,
+		uint32_t *dest_height) {
+	*dest_width = width;
+	*dest_height = height;
+
+	struct wlr_xdg_toplevel_state *state = &surface->toplevel_state->current;
+	if (width < state->min_width) {
+		*dest_width = state->min_width;
+	} else if (state->max_width > 0 &&
+			width > state->max_width) {
+		*dest_width = state->max_width;
+	}
+	if (height < state->min_height) {
+		*dest_height = state->min_height;
+	} else if (state->max_height > 0 &&
+			height > state->max_height) {
+		*dest_height = state->max_height;
+	}
+}
+
+static void resize(struct roots_view *view, uint32_t width, uint32_t height) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		return;
+	}
+
+	uint32_t constrained_width, constrained_height;
+	apply_size_constraints(surface, width, height, &constrained_width,
+		&constrained_height);
+
+	wlr_xdg_toplevel_set_size(surface, constrained_width,
+		constrained_height);
+}
+
+static void move_resize(struct roots_view *view, double x, double y,
+		uint32_t width, uint32_t height) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct roots_xdg_surface *roots_surface = view->roots_xdg_surface;
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		return;
+	}
+
+	bool update_x = x != view->x;
+	bool update_y = y != view->y;
+
+	uint32_t constrained_width, constrained_height;
+	apply_size_constraints(surface, width, height, &constrained_width,
+		&constrained_height);
+
+	if (update_x) {
+		x = x + width - constrained_width;
+	}
+	if (update_y) {
+		y = y + height - constrained_height;
+	}
+
+	view->pending_move_resize.update_x = update_x;
+	view->pending_move_resize.update_y = update_y;
+	view->pending_move_resize.x = x;
+	view->pending_move_resize.y = y;
+	view->pending_move_resize.width = constrained_width;
+	view->pending_move_resize.height = constrained_height;
+
+	uint32_t serial = wlr_xdg_toplevel_set_size(surface, constrained_width,
+		constrained_height);
+	if (serial > 0) {
+		roots_surface->pending_move_resize_configure_serial = serial;
+	} else if (roots_surface->pending_move_resize_configure_serial == 0) {
+		view_update_position(view, x, y);
+	}
+}
+
+static void maximize(struct roots_view *view, bool maximized) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		return;
+	}
+
+	wlr_xdg_toplevel_set_maximized(surface, maximized);
+}
+
+static void set_fullscreen(struct roots_view *view, bool fullscreen) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		return;
+	}
+
+	wlr_xdg_toplevel_set_fullscreen(surface, fullscreen);
+}
+
+static void close(struct roots_view *view) {
+	assert(view->type == ROOTS_XDG_SHELL_VIEW);
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		wlr_xdg_toplevel_send_close(surface);
+	}
+}
+
+static void handle_request_move(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, request_move);
+	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_input *input = view->desktop->server->input;
+	struct wlr_xdg_toplevel_move_event *e = data;
+	struct roots_seat *seat = input_seat_from_wlr_seat(input, e->seat->seat);
+	// TODO verify event serial
+	if (!seat || seat->cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
+		return;
+	}
+	roots_seat_begin_move(seat, view);
+}
+
+static void handle_request_resize(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, request_resize);
+	struct roots_view *view = roots_xdg_surface->view;
+	struct roots_input *input = view->desktop->server->input;
+	struct wlr_xdg_toplevel_resize_event *e = data;
+	// TODO verify event serial
+	struct roots_seat *seat = input_seat_from_wlr_seat(input, e->seat->seat);
+	assert(seat);
+	if (!seat || seat->cursor->mode != ROOTS_CURSOR_PASSTHROUGH) {
+		return;
+	}
+	roots_seat_begin_resize(seat, view, e->edges);
+}
+
+static void handle_request_maximize(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, request_maximize);
+	struct roots_view *view = roots_xdg_surface->view;
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+
+	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		return;
+	}
+
+	view_maximize(view, surface->toplevel_state->next.maximized);
+}
+
+static void handle_request_fullscreen(struct wl_listener *listener,
+		void *data) {
+	struct roots_xdg_surface *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, request_fullscreen);
+	struct roots_view *view = roots_xdg_surface->view;
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+	struct wlr_xdg_toplevel_set_fullscreen_event *e = data;
+
+	if (surface->role != WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+		return;
+	}
+
+	view_set_fullscreen(view, e->fullscreen, e->output);
+}
+
+static void handle_surface_commit(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface *roots_surface =
+		wl_container_of(listener, roots_surface, surface_commit);
+	struct roots_view *view = roots_surface->view;
+	struct wlr_xdg_surface *surface = view->xdg_surface;
+
+	view_apply_damage(view);
+
+	struct wlr_box size;
+	get_size(view, &size);
+	view_update_size(view, size.width, size.height);
+
+	uint32_t pending_serial =
+		roots_surface->pending_move_resize_configure_serial;
+	if (pending_serial > 0 && pending_serial >= surface->configure_serial) {
+		double x = view->x;
+		double y = view->y;
+		if (view->pending_move_resize.update_x) {
+			x = view->pending_move_resize.x + view->pending_move_resize.width -
+				size.width;
+		}
+		if (view->pending_move_resize.update_y) {
+			y = view->pending_move_resize.y + view->pending_move_resize.height -
+				size.height;
+		}
+		view_update_position(view, x, y);
+
+		if (pending_serial == surface->configure_serial) {
+			roots_surface->pending_move_resize_configure_serial = 0;
+		}
+	}
+}
+
+static void handle_new_popup(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, new_popup);
+	struct wlr_xdg_popup *wlr_popup = data;
+	popup_create(roots_xdg_surface->view, wlr_popup);
+}
+
+static void handle_destroy(struct wl_listener *listener, void *data) {
+	struct roots_xdg_surface *roots_xdg_surface =
+		wl_container_of(listener, roots_xdg_surface, destroy);
+	wl_list_remove(&roots_xdg_surface->surface_commit.link);
+	wl_list_remove(&roots_xdg_surface->destroy.link);
+	wl_list_remove(&roots_xdg_surface->new_popup.link);
+	wl_list_remove(&roots_xdg_surface->request_move.link);
+	wl_list_remove(&roots_xdg_surface->request_resize.link);
+	wl_list_remove(&roots_xdg_surface->request_maximize.link);
+	wl_list_remove(&roots_xdg_surface->request_fullscreen.link);
+	wl_list_remove(&roots_xdg_surface->view->link);
+	view_finish(roots_xdg_surface->view);
+	free(roots_xdg_surface->view);
+	free(roots_xdg_surface);
+}
+
+void handle_xdg_shell_surface(struct wl_listener *listener, void *data) {
+	struct wlr_xdg_surface *surface = data;
+	assert(surface->role != WLR_XDG_SURFACE_ROLE_NONE);
+
+	if (surface->role == WLR_XDG_SURFACE_ROLE_POPUP) {
+		wlr_log(L_DEBUG, "new xdg popup");
+		return;
+	}
+
+	struct roots_desktop *desktop =
+		wl_container_of(listener, desktop, xdg_shell_surface);
+
+	wlr_log(L_DEBUG, "new xdg toplevel: title=%s, app_id=%s",
+		surface->title, surface->app_id);
+	wlr_xdg_surface_ping(surface);
+
+	struct roots_xdg_surface *roots_surface =
+		calloc(1, sizeof(struct roots_xdg_surface));
+	if (!roots_surface) {
+		return;
+	}
+	roots_surface->surface_commit.notify = handle_surface_commit;
+	wl_signal_add(&surface->surface->events.commit,
+		&roots_surface->surface_commit);
+	roots_surface->destroy.notify = handle_destroy;
+	wl_signal_add(&surface->events.destroy, &roots_surface->destroy);
+	roots_surface->request_move.notify = handle_request_move;
+	wl_signal_add(&surface->events.request_move, &roots_surface->request_move);
+	roots_surface->request_resize.notify = handle_request_resize;
+	wl_signal_add(&surface->events.request_resize,
+		&roots_surface->request_resize);
+	roots_surface->request_maximize.notify = handle_request_maximize;
+	wl_signal_add(&surface->events.request_maximize,
+		&roots_surface->request_maximize);
+	roots_surface->request_fullscreen.notify = handle_request_fullscreen;
+	wl_signal_add(&surface->events.request_fullscreen,
+		&roots_surface->request_fullscreen);
+	roots_surface->new_popup.notify = handle_new_popup;
+	wl_signal_add(&surface->events.new_popup, &roots_surface->new_popup);
+
+	struct roots_view *view = calloc(1, sizeof(struct roots_view));
+	if (!view) {
+		free(roots_surface);
+		return;
+	}
+	view->type = ROOTS_XDG_SHELL_VIEW;
+
+	view->xdg_surface = surface;
+	view->roots_xdg_surface = roots_surface;
+	view->wlr_surface = surface->surface;
+	view->activate = activate;
+	view->resize = resize;
+	view->move_resize = move_resize;
+	view->maximize = maximize;
+	view->set_fullscreen = set_fullscreen;
+	view->close = close;
+	roots_surface->view = view;
+
+	struct wlr_box box;
+	get_size(view, &box);
+	view->width = box.width;
+	view->height = box.height;
+
+	view_init(view, desktop);
+	wl_list_insert(&desktop->views, &view->link);
+
+	view_setup(view);
+}

types/meson.build

@@ -26,6 +26,7 @@ lib_wlr_types = static_library(
 		'wlr_wl_shell.c',
 		'wlr_xcursor_manager.c',
 		'wlr_xdg_shell_v6.c',
+		'wlr_xdg_shell.c',
 	),
 	include_directories: wlr_inc,
 	dependencies: [wayland_server, pixman, wlr_protos],