libweston-desktop/wl-shell.c - weston-imx - Git at Google

 /*
  * Copyright © 2010-2012 Intel Corporation
  * Copyright © 2011-2012 Collabora, Ltd.
  * Copyright © 2013 Raspberry Pi Foundation
  * Copyright © 2016 Quentin "Sardem FF7" Glidic
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  * DEALINGS IN THE SOFTWARE.
  */

 #include "config.h"

 #include <assert.h>

 #include <wayland-server.h>

 #include "compositor.h"
 #include "zalloc.h"

 #include "libweston-desktop.h"
 #include "internal.h"

 #define WD_WL_SHELL_PROTOCOL_VERSION 1

 enum weston_desktop_wl_shell_surface_state {
 	NONE,
 	TOPLEVEL,
 	MAXIMIZED,
 	FULLSCREEN,
 	TRANSIENT,
 	POPUP,
 };

 struct weston_desktop_wl_shell_surface {
 	struct wl_resource *resource;
 	struct weston_desktop *desktop;
 	struct wl_display *display;
 	struct weston_desktop_surface *surface;
 	struct weston_desktop_surface *parent;
 	bool added;
 	struct weston_desktop_seat *popup_seat;
 	enum weston_desktop_wl_shell_surface_state state;
 	struct wl_listener wl_surface_resource_destroy_listener;
 };

 static void
 weston_desktop_wl_shell_surface_set_size(struct weston_desktop_surface *dsurface,
 					 void *user_data,
 					 int32_t width, int32_t height)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;
 	struct weston_surface *wsurface =
 		weston_desktop_surface_get_surface(surface->surface);

 	if ((wsurface->width == width && wsurface->height == height) ||
 	    (width == 0 && height == 0))
 		return;

 	wl_shell_surface_send_configure(surface->resource,
 					WL_SHELL_SURFACE_RESIZE_NONE,
 					width, height);
 }

 static void
 weston_desktop_wl_shell_surface_maybe_ungrab(struct weston_desktop_wl_shell_surface *surface)
 {
 	if (surface->state != POPUP ||
 	    !weston_desktop_surface_get_grab(surface->surface))
 		return;

 	weston_desktop_surface_popup_ungrab(surface->surface,
 					    surface->popup_seat);
 	surface->popup_seat = NULL;
 }

 static void
 weston_desktop_wl_shell_surface_committed(struct weston_desktop_surface *dsurface,
 					  void *user_data,
 					  int32_t sx, int32_t sy)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;
 	struct weston_surface *wsurface =
 		weston_desktop_surface_get_surface(dsurface);

 	if (wsurface->buffer_ref.buffer == NULL)
 		weston_desktop_wl_shell_surface_maybe_ungrab(surface);

 	if (surface->added)
 		weston_desktop_api_committed(surface->desktop, surface->surface,
 					     sx, sy);
 }

 static void
 weston_desktop_wl_shell_surface_ping(struct weston_desktop_surface *dsurface,
 				     uint32_t serial, void *user_data)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;

 	wl_shell_surface_send_ping(surface->resource, serial);
 }

 static void
 weston_desktop_wl_shell_surface_close(struct weston_desktop_surface *dsurface,
 				      void *user_data)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;

 	if (surface->state == POPUP)
 		wl_shell_surface_send_popup_done(surface->resource);
 }

 static bool
 weston_desktop_wl_shell_surface_get_maximized(struct weston_desktop_surface *dsurface,
 					      void *user_data)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;

 	return surface->state == MAXIMIZED;
 }

 static bool
 weston_desktop_wl_shell_surface_get_fullscreen(struct weston_desktop_surface *dsurface,
 					       void *user_data)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;

 	return surface->state == FULLSCREEN;
 }

 static void
 weston_desktop_wl_shell_change_state(struct weston_desktop_wl_shell_surface *surface,
 				     enum weston_desktop_wl_shell_surface_state state,
 				     struct weston_desktop_surface *parent,
 				     int32_t x, int32_t y)
 {
 	bool to_add = (parent == NULL);

 	assert(state != NONE);

 	if (to_add && surface->added) {
 		surface->state = state;
 		return;
 	}

 	if (surface->state != state) {
 		if (surface->state == POPUP)
 			weston_desktop_wl_shell_surface_maybe_ungrab(surface);

 		if (to_add) {
 			weston_desktop_surface_unset_relative_to(surface->surface);
 			weston_desktop_api_surface_added(surface->desktop,
 							 surface->surface);
 		} else if (surface->added) {
 			weston_desktop_api_surface_removed(surface->desktop,
 							   surface->surface);
 		}

 		surface->state = state;
 		surface->added = to_add;
 	}

 	if (parent != NULL)
 		weston_desktop_surface_set_relative_to(surface->surface, parent,
 						       x, y, false);
 }

 static void
 weston_desktop_wl_shell_surface_destroy(struct weston_desktop_surface *dsurface,
 					void *user_data)
 {
 	struct weston_desktop_wl_shell_surface *surface = user_data;

 	wl_list_remove(&surface->wl_surface_resource_destroy_listener.link);

 	weston_desktop_wl_shell_surface_maybe_ungrab(surface);
 	weston_desktop_surface_unset_relative_to(surface->surface);
 	if (surface->added)
 		weston_desktop_api_surface_removed(surface->desktop,
 						   surface->surface);

 	free(surface);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_pong(struct wl_client *wl_client,
 					      struct wl_resource *resource,
 					      uint32_t serial)
 {
 	struct weston_desktop_surface *surface = wl_resource_get_user_data(resource);

 	weston_desktop_client_pong(weston_desktop_surface_get_client(surface), serial);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_move(struct wl_client *wl_client,
 					      struct wl_resource *resource,
 					      struct wl_resource *seat_resource,
 					      uint32_t serial)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_seat *seat =
 		wl_resource_get_user_data(seat_resource);
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);

 	weston_desktop_api_move(surface->desktop, dsurface, seat, serial);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_resize(struct wl_client *wl_client,
 						struct wl_resource *resource,
 						struct wl_resource *seat_resource,
 						uint32_t serial,
 						enum wl_shell_surface_resize edges)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_seat *seat = wl_resource_get_user_data(seat_resource);
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);
 	enum weston_desktop_surface_edge surf_edges =
 		(enum weston_desktop_surface_edge) edges;

 	weston_desktop_api_resize(surface->desktop, dsurface, seat, serial, surf_edges);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_toplevel(struct wl_client *wl_client,
 						struct wl_resource *resource)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);

 	weston_desktop_wl_shell_change_state(surface, TOPLEVEL, NULL, 0, 0);
 	if (surface->parent == NULL)
 		return;
 	surface->parent = NULL;
 	weston_desktop_api_set_parent(surface->desktop, surface->surface, NULL);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_transient(struct wl_client *wl_client,
 						       struct wl_resource *resource,
 						       struct wl_resource *parent_resource,
 						       int32_t x, int32_t y,
 						       enum wl_shell_surface_transient flags)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_surface *wparent =
 		wl_resource_get_user_data(parent_resource);
 	struct weston_desktop_surface *parent;
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);

 	if (!weston_surface_is_desktop_surface(wparent))
 		return;

 	parent = weston_surface_get_desktop_surface(wparent);
 	if (flags & WL_SHELL_SURFACE_TRANSIENT_INACTIVE) {
 		weston_desktop_wl_shell_change_state(surface, TRANSIENT, parent,
 						     x, y);
 	} else {
 		weston_desktop_wl_shell_change_state(surface, TOPLEVEL, NULL,
 						     0, 0);
 		surface->parent = parent;
 		weston_desktop_api_set_parent(surface->desktop,
 					      surface->surface, parent);
 	}
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_fullscreen(struct wl_client *wl_client,
 							struct wl_resource *resource,
 							enum wl_shell_surface_fullscreen_method method,
 							uint32_t framerate,
 							struct wl_resource *output_resource)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);
 	struct weston_output *output = NULL;

 	if (output_resource != NULL)
 		output = weston_output_from_resource(output_resource);

 	weston_desktop_wl_shell_change_state(surface, FULLSCREEN, NULL, 0, 0);
 	weston_desktop_api_fullscreen_requested(surface->desktop, dsurface,
 						true, output);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_popup(struct wl_client *wl_client,
 						   struct wl_resource *resource,
 						   struct wl_resource *seat_resource,
 						   uint32_t serial,
 						   struct wl_resource *parent_resource,
 						   int32_t x, int32_t y,
 						   enum wl_shell_surface_transient flags)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_seat *wseat = wl_resource_get_user_data(seat_resource);
 	struct weston_desktop_seat *seat = weston_desktop_seat_from_seat(wseat);
 	struct weston_surface *parent =
 		wl_resource_get_user_data(parent_resource);
 	struct weston_desktop_surface *parent_surface;
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);

 	if (seat == NULL) {
 		wl_client_post_no_memory(wl_client);
 		return;
 	}

 	if (!weston_surface_is_desktop_surface(parent))
 		return;

 	parent_surface = weston_surface_get_desktop_surface(parent);

 	weston_desktop_wl_shell_change_state(surface, POPUP,
 					     parent_surface, x, y);
 	weston_desktop_surface_popup_grab(surface->surface, seat, serial);
 	surface->popup_seat = seat;
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_maximized(struct wl_client *wl_client,
 						       struct wl_resource *resource,
 						       struct wl_resource *output_resource)
 {
 	struct weston_desktop_surface *dsurface =
 		wl_resource_get_user_data(resource);
 	struct weston_desktop_wl_shell_surface *surface =
 		weston_desktop_surface_get_implementation_data(dsurface);

 	weston_desktop_wl_shell_change_state(surface, MAXIMIZED, NULL, 0, 0);
 	weston_desktop_api_maximized_requested(surface->desktop, dsurface, true);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_title(struct wl_client *wl_client,
 						   struct wl_resource *resource,
 						   const char *title)
 {
 	struct weston_desktop_surface *surface =
 		wl_resource_get_user_data(resource);

 	weston_desktop_surface_set_title(surface, title);
 }

 static void
 weston_desktop_wl_shell_surface_protocol_set_class(struct wl_client *wl_client,
 						   struct wl_resource *resource,
 						   const char *class_)
 {
 	struct weston_desktop_surface *surface =
 		wl_resource_get_user_data(resource);

 	weston_desktop_surface_set_app_id(surface, class_);
 }


 static const struct wl_shell_surface_interface weston_desktop_wl_shell_surface_implementation = {
 	.pong           = weston_desktop_wl_shell_surface_protocol_pong,
 	.move           = weston_desktop_wl_shell_surface_protocol_move,
 	.resize         = weston_desktop_wl_shell_surface_protocol_resize,
 	.set_toplevel   = weston_desktop_wl_shell_surface_protocol_set_toplevel,
 	.set_transient  = weston_desktop_wl_shell_surface_protocol_set_transient,
 	.set_fullscreen = weston_desktop_wl_shell_surface_protocol_set_fullscreen,
 	.set_popup      = weston_desktop_wl_shell_surface_protocol_set_popup,
 	.set_maximized  = weston_desktop_wl_shell_surface_protocol_set_maximized,
 	.set_title      = weston_desktop_wl_shell_surface_protocol_set_title,
 	.set_class      = weston_desktop_wl_shell_surface_protocol_set_class,
 };

 static const struct weston_desktop_surface_implementation weston_desktop_wl_shell_surface_internal_implementation = {
 	.set_size = weston_desktop_wl_shell_surface_set_size,
 	.committed = weston_desktop_wl_shell_surface_committed,
 	.ping = weston_desktop_wl_shell_surface_ping,
 	.close = weston_desktop_wl_shell_surface_close,

 	.get_maximized = weston_desktop_wl_shell_surface_get_maximized,
 	.get_fullscreen = weston_desktop_wl_shell_surface_get_fullscreen,

 	.destroy = weston_desktop_wl_shell_surface_destroy,
 };

 static void
 wl_surface_resource_destroyed(struct wl_listener *listener,
 					     void *data)
 {
 	struct weston_desktop_wl_shell_surface *surface =
 		wl_container_of(listener, surface,
 				wl_surface_resource_destroy_listener);

 	/* the wl_shell_surface spec says that wl_shell_surfaces are to be
 	 * destroyed automatically when the wl_surface is destroyed. */
 	weston_desktop_surface_destroy(surface->surface);
 }

 static void
 weston_desktop_wl_shell_protocol_get_shell_surface(struct wl_client *wl_client,
 						   struct wl_resource *resource,
 						   uint32_t id,
 						   struct wl_resource *surface_resource)
 {
 	struct weston_desktop_client *client = wl_resource_get_user_data(resource);
 	struct weston_surface *wsurface = wl_resource_get_user_data(surface_resource);
 	struct weston_desktop_wl_shell_surface *surface;


 	if (weston_surface_set_role(wsurface, "wl_shell_surface", resource, WL_SHELL_ERROR_ROLE) < 0)
 		return;

 	surface = zalloc(sizeof(struct weston_desktop_wl_shell_surface));
 	if (surface == NULL) {
 		wl_client_post_no_memory(wl_client);
 		return;
 	}

 	surface->desktop = weston_desktop_client_get_desktop(client);
 	surface->display = weston_desktop_get_display(surface->desktop);

 	surface->surface =
 		weston_desktop_surface_create(surface->desktop, client, wsurface,
 					      &weston_desktop_wl_shell_surface_internal_implementation,
 					      surface);
 	if (surface->surface == NULL) {
 		free(surface);
 		return;
 	}

 	surface->wl_surface_resource_destroy_listener.notify =
 		wl_surface_resource_destroyed;
 	wl_resource_add_destroy_listener(wsurface->resource,
 					 &surface->wl_surface_resource_destroy_listener);

 	surface->resource =
 		weston_desktop_surface_add_resource(surface->surface,
 						    &wl_shell_surface_interface,
 						    &weston_desktop_wl_shell_surface_implementation,
 						    id, NULL);
 }


 static const struct wl_shell_interface weston_desktop_wl_shell_implementation = {
 	.get_shell_surface = weston_desktop_wl_shell_protocol_get_shell_surface,
 };

 static void
 weston_desktop_wl_shell_bind(struct wl_client *client, void *data,
 			     uint32_t version, uint32_t id)
 {
 	struct weston_desktop *desktop = data;

 	weston_desktop_client_create(desktop, client, NULL, &wl_shell_interface,
 				     &weston_desktop_wl_shell_implementation,
 				     version, id);
 }

 struct wl_global *
 weston_desktop_wl_shell_create(struct weston_desktop *desktop,
 			       struct wl_display *display)
 {
 	return wl_global_create(display,
 				&wl_shell_interface,
 				WD_WL_SHELL_PROTOCOL_VERSION, desktop,
 				weston_desktop_wl_shell_bind);
 }
	/*
	* Copyright © 2010-2012 Intel Corporation
	* Copyright © 2011-2012 Collabora, Ltd.
	* Copyright © 2013 Raspberry Pi Foundation
	* Copyright © 2016 Quentin "Sardem FF7" Glidic
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice (including the next
	* paragraph) shall be included in all copies or substantial portions of the
	* Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	* DEALINGS IN THE SOFTWARE.
	*/

	#include "config.h"

	#include <assert.h>

	#include <wayland-server.h>

	#include "compositor.h"
	#include "zalloc.h"

	#include "libweston-desktop.h"
	#include "internal.h"

	#define WD_WL_SHELL_PROTOCOL_VERSION 1

	enum weston_desktop_wl_shell_surface_state {
	NONE,
	TOPLEVEL,
	MAXIMIZED,
	FULLSCREEN,
	TRANSIENT,
	POPUP,
	};

	struct weston_desktop_wl_shell_surface {
	struct wl_resource *resource;
	struct weston_desktop *desktop;
	struct wl_display *display;
	struct weston_desktop_surface *surface;
	struct weston_desktop_surface *parent;
	bool added;
	struct weston_desktop_seat *popup_seat;
	enum weston_desktop_wl_shell_surface_state state;
	struct wl_listener wl_surface_resource_destroy_listener;
	};

	static void
	weston_desktop_wl_shell_surface_set_size(struct weston_desktop_surface *dsurface,
	void *user_data,
	int32_t width, int32_t height)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;
	struct weston_surface *wsurface =
	weston_desktop_surface_get_surface(surface->surface);

	if ((wsurface->width == width && wsurface->height == height) \|\|
	(width == 0 && height == 0))
	return;

	wl_shell_surface_send_configure(surface->resource,
	WL_SHELL_SURFACE_RESIZE_NONE,
	width, height);
	}

	static void
	weston_desktop_wl_shell_surface_maybe_ungrab(struct weston_desktop_wl_shell_surface *surface)
	{
	if (surface->state != POPUP \|\|
	!weston_desktop_surface_get_grab(surface->surface))
	return;

	weston_desktop_surface_popup_ungrab(surface->surface,
	surface->popup_seat);
	surface->popup_seat = NULL;
	}

	static void
	weston_desktop_wl_shell_surface_committed(struct weston_desktop_surface *dsurface,
	void *user_data,
	int32_t sx, int32_t sy)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;
	struct weston_surface *wsurface =
	weston_desktop_surface_get_surface(dsurface);

	if (wsurface->buffer_ref.buffer == NULL)
	weston_desktop_wl_shell_surface_maybe_ungrab(surface);

	if (surface->added)
	weston_desktop_api_committed(surface->desktop, surface->surface,
	sx, sy);
	}

	static void
	weston_desktop_wl_shell_surface_ping(struct weston_desktop_surface *dsurface,
	uint32_t serial, void *user_data)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;

	wl_shell_surface_send_ping(surface->resource, serial);
	}

	static void
	weston_desktop_wl_shell_surface_close(struct weston_desktop_surface *dsurface,
	void *user_data)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;

	if (surface->state == POPUP)
	wl_shell_surface_send_popup_done(surface->resource);
	}

	static bool
	weston_desktop_wl_shell_surface_get_maximized(struct weston_desktop_surface *dsurface,
	void *user_data)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;

	return surface->state == MAXIMIZED;
	}

	static bool
	weston_desktop_wl_shell_surface_get_fullscreen(struct weston_desktop_surface *dsurface,
	void *user_data)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;

	return surface->state == FULLSCREEN;
	}

	static void
	weston_desktop_wl_shell_change_state(struct weston_desktop_wl_shell_surface *surface,
	enum weston_desktop_wl_shell_surface_state state,
	struct weston_desktop_surface *parent,
	int32_t x, int32_t y)
	{
	bool to_add = (parent == NULL);

	assert(state != NONE);

	if (to_add && surface->added) {
	surface->state = state;
	return;
	}

	if (surface->state != state) {
	if (surface->state == POPUP)
	weston_desktop_wl_shell_surface_maybe_ungrab(surface);

	if (to_add) {
	weston_desktop_surface_unset_relative_to(surface->surface);
	weston_desktop_api_surface_added(surface->desktop,
	surface->surface);
	} else if (surface->added) {
	weston_desktop_api_surface_removed(surface->desktop,
	surface->surface);
	}

	surface->state = state;
	surface->added = to_add;
	}

	if (parent != NULL)
	weston_desktop_surface_set_relative_to(surface->surface, parent,
	x, y, false);
	}

	static void
	weston_desktop_wl_shell_surface_destroy(struct weston_desktop_surface *dsurface,
	void *user_data)
	{
	struct weston_desktop_wl_shell_surface *surface = user_data;

	wl_list_remove(&surface->wl_surface_resource_destroy_listener.link);

	weston_desktop_wl_shell_surface_maybe_ungrab(surface);
	weston_desktop_surface_unset_relative_to(surface->surface);
	if (surface->added)
	weston_desktop_api_surface_removed(surface->desktop,
	surface->surface);

	free(surface);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_pong(struct wl_client *wl_client,
	struct wl_resource *resource,
	uint32_t serial)
	{
	struct weston_desktop_surface *surface = wl_resource_get_user_data(resource);

	weston_desktop_client_pong(weston_desktop_surface_get_client(surface), serial);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_move(struct wl_client *wl_client,
	struct wl_resource *resource,
	struct wl_resource *seat_resource,
	uint32_t serial)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_seat *seat =
	wl_resource_get_user_data(seat_resource);
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);

	weston_desktop_api_move(surface->desktop, dsurface, seat, serial);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_resize(struct wl_client *wl_client,
	struct wl_resource *resource,
	struct wl_resource *seat_resource,
	uint32_t serial,
	enum wl_shell_surface_resize edges)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_seat *seat = wl_resource_get_user_data(seat_resource);
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);
	enum weston_desktop_surface_edge surf_edges =
	(enum weston_desktop_surface_edge) edges;

	weston_desktop_api_resize(surface->desktop, dsurface, seat, serial, surf_edges);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_toplevel(struct wl_client *wl_client,
	struct wl_resource *resource)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);

	weston_desktop_wl_shell_change_state(surface, TOPLEVEL, NULL, 0, 0);
	if (surface->parent == NULL)
	return;
	surface->parent = NULL;
	weston_desktop_api_set_parent(surface->desktop, surface->surface, NULL);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_transient(struct wl_client *wl_client,
	struct wl_resource *resource,
	struct wl_resource *parent_resource,
	int32_t x, int32_t y,
	enum wl_shell_surface_transient flags)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_surface *wparent =
	wl_resource_get_user_data(parent_resource);
	struct weston_desktop_surface *parent;
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);

	if (!weston_surface_is_desktop_surface(wparent))
	return;

	parent = weston_surface_get_desktop_surface(wparent);
	if (flags & WL_SHELL_SURFACE_TRANSIENT_INACTIVE) {
	weston_desktop_wl_shell_change_state(surface, TRANSIENT, parent,
	x, y);
	} else {
	weston_desktop_wl_shell_change_state(surface, TOPLEVEL, NULL,
	0, 0);
	surface->parent = parent;
	weston_desktop_api_set_parent(surface->desktop,
	surface->surface, parent);
	}
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_fullscreen(struct wl_client *wl_client,
	struct wl_resource *resource,
	enum wl_shell_surface_fullscreen_method method,
	uint32_t framerate,
	struct wl_resource *output_resource)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);
	struct weston_output *output = NULL;

	if (output_resource != NULL)
	output = weston_output_from_resource(output_resource);

	weston_desktop_wl_shell_change_state(surface, FULLSCREEN, NULL, 0, 0);
	weston_desktop_api_fullscreen_requested(surface->desktop, dsurface,
	true, output);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_popup(struct wl_client *wl_client,
	struct wl_resource *resource,
	struct wl_resource *seat_resource,
	uint32_t serial,
	struct wl_resource *parent_resource,
	int32_t x, int32_t y,
	enum wl_shell_surface_transient flags)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_seat *wseat = wl_resource_get_user_data(seat_resource);
	struct weston_desktop_seat *seat = weston_desktop_seat_from_seat(wseat);
	struct weston_surface *parent =
	wl_resource_get_user_data(parent_resource);
	struct weston_desktop_surface *parent_surface;
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);

	if (seat == NULL) {
	wl_client_post_no_memory(wl_client);
	return;
	}

	if (!weston_surface_is_desktop_surface(parent))
	return;

	parent_surface = weston_surface_get_desktop_surface(parent);

	weston_desktop_wl_shell_change_state(surface, POPUP,
	parent_surface, x, y);
	weston_desktop_surface_popup_grab(surface->surface, seat, serial);
	surface->popup_seat = seat;
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_maximized(struct wl_client *wl_client,
	struct wl_resource *resource,
	struct wl_resource *output_resource)
	{
	struct weston_desktop_surface *dsurface =
	wl_resource_get_user_data(resource);
	struct weston_desktop_wl_shell_surface *surface =
	weston_desktop_surface_get_implementation_data(dsurface);

	weston_desktop_wl_shell_change_state(surface, MAXIMIZED, NULL, 0, 0);
	weston_desktop_api_maximized_requested(surface->desktop, dsurface, true);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_title(struct wl_client *wl_client,
	struct wl_resource *resource,
	const char *title)
	{
	struct weston_desktop_surface *surface =
	wl_resource_get_user_data(resource);

	weston_desktop_surface_set_title(surface, title);
	}

	static void
	weston_desktop_wl_shell_surface_protocol_set_class(struct wl_client *wl_client,
	struct wl_resource *resource,
	const char *class_)
	{
	struct weston_desktop_surface *surface =
	wl_resource_get_user_data(resource);

	weston_desktop_surface_set_app_id(surface, class_);
	}


	static const struct wl_shell_surface_interface weston_desktop_wl_shell_surface_implementation = {
	.pong = weston_desktop_wl_shell_surface_protocol_pong,
	.move = weston_desktop_wl_shell_surface_protocol_move,
	.resize = weston_desktop_wl_shell_surface_protocol_resize,
	.set_toplevel = weston_desktop_wl_shell_surface_protocol_set_toplevel,
	.set_transient = weston_desktop_wl_shell_surface_protocol_set_transient,
	.set_fullscreen = weston_desktop_wl_shell_surface_protocol_set_fullscreen,
	.set_popup = weston_desktop_wl_shell_surface_protocol_set_popup,
	.set_maximized = weston_desktop_wl_shell_surface_protocol_set_maximized,
	.set_title = weston_desktop_wl_shell_surface_protocol_set_title,
	.set_class = weston_desktop_wl_shell_surface_protocol_set_class,
	};

	static const struct weston_desktop_surface_implementation weston_desktop_wl_shell_surface_internal_implementation = {
	.set_size = weston_desktop_wl_shell_surface_set_size,
	.committed = weston_desktop_wl_shell_surface_committed,
	.ping = weston_desktop_wl_shell_surface_ping,
	.close = weston_desktop_wl_shell_surface_close,

	.get_maximized = weston_desktop_wl_shell_surface_get_maximized,
	.get_fullscreen = weston_desktop_wl_shell_surface_get_fullscreen,

	.destroy = weston_desktop_wl_shell_surface_destroy,
	};

	static void
	wl_surface_resource_destroyed(struct wl_listener *listener,
	void *data)
	{
	struct weston_desktop_wl_shell_surface *surface =
	wl_container_of(listener, surface,
	wl_surface_resource_destroy_listener);

	/* the wl_shell_surface spec says that wl_shell_surfaces are to be
	* destroyed automatically when the wl_surface is destroyed. */
	weston_desktop_surface_destroy(surface->surface);
	}

	static void
	weston_desktop_wl_shell_protocol_get_shell_surface(struct wl_client *wl_client,
	struct wl_resource *resource,
	uint32_t id,
	struct wl_resource *surface_resource)
	{
	struct weston_desktop_client *client = wl_resource_get_user_data(resource);
	struct weston_surface *wsurface = wl_resource_get_user_data(surface_resource);
	struct weston_desktop_wl_shell_surface *surface;


	if (weston_surface_set_role(wsurface, "wl_shell_surface", resource, WL_SHELL_ERROR_ROLE) < 0)
	return;

	surface = zalloc(sizeof(struct weston_desktop_wl_shell_surface));
	if (surface == NULL) {
	wl_client_post_no_memory(wl_client);
	return;
	}

	surface->desktop = weston_desktop_client_get_desktop(client);
	surface->display = weston_desktop_get_display(surface->desktop);

	surface->surface =
	weston_desktop_surface_create(surface->desktop, client, wsurface,
	&weston_desktop_wl_shell_surface_internal_implementation,
	surface);
	if (surface->surface == NULL) {
	free(surface);
	return;
	}

	surface->wl_surface_resource_destroy_listener.notify =
	wl_surface_resource_destroyed;
	wl_resource_add_destroy_listener(wsurface->resource,
	&surface->wl_surface_resource_destroy_listener);

	surface->resource =
	weston_desktop_surface_add_resource(surface->surface,
	&wl_shell_surface_interface,
	&weston_desktop_wl_shell_surface_implementation,
	id, NULL);
	}


	static const struct wl_shell_interface weston_desktop_wl_shell_implementation = {
	.get_shell_surface = weston_desktop_wl_shell_protocol_get_shell_surface,
	};

	static void
	weston_desktop_wl_shell_bind(struct wl_client client, void data,
	uint32_t version, uint32_t id)
	{
	struct weston_desktop *desktop = data;

	weston_desktop_client_create(desktop, client, NULL, &wl_shell_interface,
	&weston_desktop_wl_shell_implementation,
	version, id);
	}

	struct wl_global *
	weston_desktop_wl_shell_create(struct weston_desktop *desktop,
	struct wl_display *display)
	{
	return wl_global_create(display,
	&wl_shell_interface,
	WD_WL_SHELL_PROTOCOL_VERSION, desktop,
	weston_desktop_wl_shell_bind);
	}