demo.c

/* 
  gcc -o demo demo.c -lwayland-client
 */
#define _POSIX_C_SOURCE 200112L
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdbool.h>
#include <string.h>
#include <sys/mman.h>
#include <time.h>
#include <unistd.h>
#include <wayland-client.h>

/* ========================================================================= */
/* Generated by wayland-scanner 1.20.0 */

#ifndef XDG_SHELL_CLIENT_PROTOCOL_H
#define XDG_SHELL_CLIENT_PROTOCOL_H

#include <stdint.h>
#include <stddef.h>
#include "wayland-client.h"

#ifdef  __cplusplus
extern "C" {
#endif

/**
 * @page page_xdg_shell The xdg_shell protocol
 * @section page_ifaces_xdg_shell Interfaces
 * - @subpage page_iface_xdg_wm_base - create desktop-style surfaces
 * - @subpage page_iface_xdg_positioner - child surface positioner
 * - @subpage page_iface_xdg_surface - desktop user interface surface base interface
 * - @subpage page_iface_xdg_toplevel - toplevel surface
 * - @subpage page_iface_xdg_popup - short-lived, popup surfaces for menus
 * @section page_copyright_xdg_shell Copyright
 * <pre>
 *
 * Copyright © 2008-2013 Kristian Høgsberg
 * Copyright © 2013      Rafael Antognolli
 * Copyright © 2013      Jasper St. Pierre
 * Copyright © 2010-2013 Intel Corporation
 * Copyright © 2015-2017 Samsung Electronics Co., Ltd
 * Copyright © 2015-2017 Red Hat Inc.
 *
 * 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.
 * </pre>
 */
struct wl_output;
struct wl_seat;
struct wl_surface;
struct xdg_popup;
struct xdg_positioner;
struct xdg_surface;
struct xdg_toplevel;
struct xdg_wm_base;

#ifndef XDG_WM_BASE_INTERFACE
#define XDG_WM_BASE_INTERFACE
/**
 * @page page_iface_xdg_wm_base xdg_wm_base
 * @section page_iface_xdg_wm_base_desc Description
 *
 * The xdg_wm_base interface is exposed as a global object enabling clients
 * to turn their wl_surfaces into windows in a desktop environment. It
 * defines the basic functionality needed for clients and the compositor to
 * create windows that can be dragged, resized, maximized, etc, as well as
 * creating transient windows such as popup menus.
 * @section page_iface_xdg_wm_base_api API
 * See @ref iface_xdg_wm_base.
 */
/**
 * @defgroup iface_xdg_wm_base The xdg_wm_base interface
 *
 * The xdg_wm_base interface is exposed as a global object enabling clients
 * to turn their wl_surfaces into windows in a desktop environment. It
 * defines the basic functionality needed for clients and the compositor to
 * create windows that can be dragged, resized, maximized, etc, as well as
 * creating transient windows such as popup menus.
 */
extern const struct wl_interface xdg_wm_base_interface;
#endif
#ifndef XDG_POSITIONER_INTERFACE
#define XDG_POSITIONER_INTERFACE
/**
 * @page page_iface_xdg_positioner xdg_positioner
 * @section page_iface_xdg_positioner_desc Description
 *
 * The xdg_positioner provides a collection of rules for the placement of a
 * child surface relative to a parent surface. Rules can be defined to ensure
 * the child surface remains within the visible area's borders, and to
 * specify how the child surface changes its position, such as sliding along
 * an axis, or flipping around a rectangle. These positioner-created rules are
 * constrained by the requirement that a child surface must intersect with or
 * be at least partially adjacent to its parent surface.
 *
 * See the various requests for details about possible rules.
 *
 * At the time of the request, the compositor makes a copy of the rules
 * specified by the xdg_positioner. Thus, after the request is complete the
 * xdg_positioner object can be destroyed or reused; further changes to the
 * object will have no effect on previous usages.
 *
 * For an xdg_positioner object to be considered complete, it must have a
 * non-zero size set by set_size, and a non-zero anchor rectangle set by
 * set_anchor_rect. Passing an incomplete xdg_positioner object when
 * positioning a surface raises an error.
 * @section page_iface_xdg_positioner_api API
 * See @ref iface_xdg_positioner.
 */
/**
 * @defgroup iface_xdg_positioner The xdg_positioner interface
 *
 * The xdg_positioner provides a collection of rules for the placement of a
 * child surface relative to a parent surface. Rules can be defined to ensure
 * the child surface remains within the visible area's borders, and to
 * specify how the child surface changes its position, such as sliding along
 * an axis, or flipping around a rectangle. These positioner-created rules are
 * constrained by the requirement that a child surface must intersect with or
 * be at least partially adjacent to its parent surface.
 *
 * See the various requests for details about possible rules.
 *
 * At the time of the request, the compositor makes a copy of the rules
 * specified by the xdg_positioner. Thus, after the request is complete the
 * xdg_positioner object can be destroyed or reused; further changes to the
 * object will have no effect on previous usages.
 *
 * For an xdg_positioner object to be considered complete, it must have a
 * non-zero size set by set_size, and a non-zero anchor rectangle set by
 * set_anchor_rect. Passing an incomplete xdg_positioner object when
 * positioning a surface raises an error.
 */
extern const struct wl_interface xdg_positioner_interface;
#endif
#ifndef XDG_SURFACE_INTERFACE
#define XDG_SURFACE_INTERFACE
/**
 * @page page_iface_xdg_surface xdg_surface
 * @section page_iface_xdg_surface_desc Description
 *
 * An interface that may be implemented by a wl_surface, for
 * implementations that provide a desktop-style user interface.
 *
 * It provides a base set of functionality required to construct user
 * interface elements requiring management by the compositor, such as
 * toplevel windows, menus, etc. The types of functionality are split into
 * xdg_surface roles.
 *
 * Creating an xdg_surface does not set the role for a wl_surface. In order
 * to map an xdg_surface, the client must create a role-specific object
 * using, e.g., get_toplevel, get_popup. The wl_surface for any given
 * xdg_surface can have at most one role, and may not be assigned any role
 * not based on xdg_surface.
 *
 * A role must be assigned before any other requests are made to the
 * xdg_surface object.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_surface state to take effect.
 *
 * Creating an xdg_surface from a wl_surface which has a buffer attached or
 * committed is a client error, and any attempts by a client to attach or
 * manipulate a buffer prior to the first xdg_surface.configure call must
 * also be treated as errors.
 *
 * After creating a role-specific object and setting it up, the client must
 * perform an initial commit without any buffer attached. The compositor
 * will reply with an xdg_surface.configure event. The client must
 * acknowledge it and is then allowed to attach a buffer to map the surface.
 *
 * Mapping an xdg_surface-based role surface is defined as making it
 * possible for the surface to be shown by the compositor. Note that
 * a mapped surface is not guaranteed to be visible once it is mapped.
 *
 * For an xdg_surface to be mapped by the compositor, the following
 * conditions must be met:
 * (1) the client has assigned an xdg_surface-based role to the surface
 * (2) the client has set and committed the xdg_surface state and the
 * role-dependent state to the surface
 * (3) the client has committed a buffer to the surface
 *
 * A newly-unmapped surface is considered to have met condition (1) out
 * of the 3 required conditions for mapping a surface if its role surface
 * has not been destroyed, i.e. the client must perform the initial commit
 * again before attaching a buffer.
 * @section page_iface_xdg_surface_api API
 * See @ref iface_xdg_surface.
 */
/**
 * @defgroup iface_xdg_surface The xdg_surface interface
 *
 * An interface that may be implemented by a wl_surface, for
 * implementations that provide a desktop-style user interface.
 *
 * It provides a base set of functionality required to construct user
 * interface elements requiring management by the compositor, such as
 * toplevel windows, menus, etc. The types of functionality are split into
 * xdg_surface roles.
 *
 * Creating an xdg_surface does not set the role for a wl_surface. In order
 * to map an xdg_surface, the client must create a role-specific object
 * using, e.g., get_toplevel, get_popup. The wl_surface for any given
 * xdg_surface can have at most one role, and may not be assigned any role
 * not based on xdg_surface.
 *
 * A role must be assigned before any other requests are made to the
 * xdg_surface object.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_surface state to take effect.
 *
 * Creating an xdg_surface from a wl_surface which has a buffer attached or
 * committed is a client error, and any attempts by a client to attach or
 * manipulate a buffer prior to the first xdg_surface.configure call must
 * also be treated as errors.
 *
 * After creating a role-specific object and setting it up, the client must
 * perform an initial commit without any buffer attached. The compositor
 * will reply with an xdg_surface.configure event. The client must
 * acknowledge it and is then allowed to attach a buffer to map the surface.
 *
 * Mapping an xdg_surface-based role surface is defined as making it
 * possible for the surface to be shown by the compositor. Note that
 * a mapped surface is not guaranteed to be visible once it is mapped.
 *
 * For an xdg_surface to be mapped by the compositor, the following
 * conditions must be met:
 * (1) the client has assigned an xdg_surface-based role to the surface
 * (2) the client has set and committed the xdg_surface state and the
 * role-dependent state to the surface
 * (3) the client has committed a buffer to the surface
 *
 * A newly-unmapped surface is considered to have met condition (1) out
 * of the 3 required conditions for mapping a surface if its role surface
 * has not been destroyed, i.e. the client must perform the initial commit
 * again before attaching a buffer.
 */
extern const struct wl_interface xdg_surface_interface;
#endif
#ifndef XDG_TOPLEVEL_INTERFACE
#define XDG_TOPLEVEL_INTERFACE
/**
 * @page page_iface_xdg_toplevel xdg_toplevel
 * @section page_iface_xdg_toplevel_desc Description
 *
 * This interface defines an xdg_surface role which allows a surface to,
 * among other things, set window-like properties such as maximize,
 * fullscreen, and minimize, set application-specific metadata like title and
 * id, and well as trigger user interactive operations such as interactive
 * resize and move.
 *
 * Unmapping an xdg_toplevel means that the surface cannot be shown
 * by the compositor until it is explicitly mapped again.
 * All active operations (e.g., move, resize) are canceled and all
 * attributes (e.g. title, state, stacking, ...) are discarded for
 * an xdg_toplevel surface when it is unmapped. The xdg_toplevel returns to
 * the state it had right after xdg_surface.get_toplevel. The client
 * can re-map the toplevel by perfoming a commit without any buffer
 * attached, waiting for a configure event and handling it as usual (see
 * xdg_surface description).
 *
 * Attaching a null buffer to a toplevel unmaps the surface.
 * @section page_iface_xdg_toplevel_api API
 * See @ref iface_xdg_toplevel.
 */
/**
 * @defgroup iface_xdg_toplevel The xdg_toplevel interface
 *
 * This interface defines an xdg_surface role which allows a surface to,
 * among other things, set window-like properties such as maximize,
 * fullscreen, and minimize, set application-specific metadata like title and
 * id, and well as trigger user interactive operations such as interactive
 * resize and move.
 *
 * Unmapping an xdg_toplevel means that the surface cannot be shown
 * by the compositor until it is explicitly mapped again.
 * All active operations (e.g., move, resize) are canceled and all
 * attributes (e.g. title, state, stacking, ...) are discarded for
 * an xdg_toplevel surface when it is unmapped. The xdg_toplevel returns to
 * the state it had right after xdg_surface.get_toplevel. The client
 * can re-map the toplevel by perfoming a commit without any buffer
 * attached, waiting for a configure event and handling it as usual (see
 * xdg_surface description).
 *
 * Attaching a null buffer to a toplevel unmaps the surface.
 */
extern const struct wl_interface xdg_toplevel_interface;
#endif
#ifndef XDG_POPUP_INTERFACE
#define XDG_POPUP_INTERFACE
/**
 * @page page_iface_xdg_popup xdg_popup
 * @section page_iface_xdg_popup_desc Description
 *
 * A popup surface is a short-lived, temporary surface. It can be used to
 * implement for example menus, popovers, tooltips and other similar user
 * interface concepts.
 *
 * A popup can be made to take an explicit grab. See xdg_popup.grab for
 * details.
 *
 * When the popup is dismissed, a popup_done event will be sent out, and at
 * the same time the surface will be unmapped. See the xdg_popup.popup_done
 * event for details.
 *
 * Explicitly destroying the xdg_popup object will also dismiss the popup and
 * unmap the surface. Clients that want to dismiss the popup when another
 * surface of their own is clicked should dismiss the popup using the destroy
 * request.
 *
 * A newly created xdg_popup will be stacked on top of all previously created
 * xdg_popup surfaces associated with the same xdg_toplevel.
 *
 * The parent of an xdg_popup must be mapped (see the xdg_surface
 * description) before the xdg_popup itself.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_popup state to take effect.
 * @section page_iface_xdg_popup_api API
 * See @ref iface_xdg_popup.
 */
/**
 * @defgroup iface_xdg_popup The xdg_popup interface
 *
 * A popup surface is a short-lived, temporary surface. It can be used to
 * implement for example menus, popovers, tooltips and other similar user
 * interface concepts.
 *
 * A popup can be made to take an explicit grab. See xdg_popup.grab for
 * details.
 *
 * When the popup is dismissed, a popup_done event will be sent out, and at
 * the same time the surface will be unmapped. See the xdg_popup.popup_done
 * event for details.
 *
 * Explicitly destroying the xdg_popup object will also dismiss the popup and
 * unmap the surface. Clients that want to dismiss the popup when another
 * surface of their own is clicked should dismiss the popup using the destroy
 * request.
 *
 * A newly created xdg_popup will be stacked on top of all previously created
 * xdg_popup surfaces associated with the same xdg_toplevel.
 *
 * The parent of an xdg_popup must be mapped (see the xdg_surface
 * description) before the xdg_popup itself.
 *
 * The client must call wl_surface.commit on the corresponding wl_surface
 * for the xdg_popup state to take effect.
 */
extern const struct wl_interface xdg_popup_interface;
#endif

#ifndef XDG_WM_BASE_ERROR_ENUM
#define XDG_WM_BASE_ERROR_ENUM
enum xdg_wm_base_error {
	/**
	 * given wl_surface has another role
	 */
	XDG_WM_BASE_ERROR_ROLE = 0,
	/**
	 * xdg_wm_base was destroyed before children
	 */
	XDG_WM_BASE_ERROR_DEFUNCT_SURFACES = 1,
	/**
	 * the client tried to map or destroy a non-topmost popup
	 */
	XDG_WM_BASE_ERROR_NOT_THE_TOPMOST_POPUP = 2,
	/**
	 * the client specified an invalid popup parent surface
	 */
	XDG_WM_BASE_ERROR_INVALID_POPUP_PARENT = 3,
	/**
	 * the client provided an invalid surface state
	 */
	XDG_WM_BASE_ERROR_INVALID_SURFACE_STATE = 4,
	/**
	 * the client provided an invalid positioner
	 */
	XDG_WM_BASE_ERROR_INVALID_POSITIONER = 5,
};
#endif /* XDG_WM_BASE_ERROR_ENUM */

/**
 * @ingroup iface_xdg_wm_base
 * @struct xdg_wm_base_listener
 */
struct xdg_wm_base_listener {
	/**
	 * check if the client is alive
	 *
	 * The ping event asks the client if it's still alive. Pass the
	 * serial specified in the event back to the compositor by sending
	 * a "pong" request back with the specified serial. See
	 * xdg_wm_base.pong.
	 *
	 * Compositors can use this to determine if the client is still
	 * alive. It's unspecified what will happen if the client doesn't
	 * respond to the ping request, or in what timeframe. Clients
	 * should try to respond in a reasonable amount of time.
	 *
	 * A compositor is free to ping in any way it wants, but a client
	 * must always respond to any xdg_wm_base object it created.
	 * @param serial pass this to the pong request
	 */
	void (*ping)(void *data,
		     struct xdg_wm_base *xdg_wm_base,
		     uint32_t serial);
};

/**
 * @ingroup iface_xdg_wm_base
 */
static inline int
xdg_wm_base_add_listener(struct xdg_wm_base *xdg_wm_base,
			 const struct xdg_wm_base_listener *listener, void *data)
{
	return wl_proxy_add_listener((struct wl_proxy *) xdg_wm_base,
				     (void (**)(void)) listener, data);
}

#define XDG_WM_BASE_DESTROY 0
#define XDG_WM_BASE_CREATE_POSITIONER 1
#define XDG_WM_BASE_GET_XDG_SURFACE 2
#define XDG_WM_BASE_PONG 3

/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_PING_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_CREATE_POSITIONER_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_GET_XDG_SURFACE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_wm_base
 */
#define XDG_WM_BASE_PONG_SINCE_VERSION 1

/** @ingroup iface_xdg_wm_base */
static inline void
xdg_wm_base_set_user_data(struct xdg_wm_base *xdg_wm_base, void *user_data)
{
	wl_proxy_set_user_data((struct wl_proxy *) xdg_wm_base, user_data);
}

/** @ingroup iface_xdg_wm_base */
static inline void *
xdg_wm_base_get_user_data(struct xdg_wm_base *xdg_wm_base)
{
	return wl_proxy_get_user_data((struct wl_proxy *) xdg_wm_base);
}

static inline uint32_t
xdg_wm_base_get_version(struct xdg_wm_base *xdg_wm_base)
{
	return wl_proxy_get_version((struct wl_proxy *) xdg_wm_base);
}

/**
 * @ingroup iface_xdg_wm_base
 *
 * Destroy this xdg_wm_base object.
 *
 * Destroying a bound xdg_wm_base object while there are surfaces
 * still alive created by this xdg_wm_base object instance is illegal
 * and will result in a protocol error.
 */
static inline void
xdg_wm_base_destroy(struct xdg_wm_base *xdg_wm_base)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_wm_base,
			 XDG_WM_BASE_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_wm_base), WL_MARSHAL_FLAG_DESTROY);
}

/**
 * @ingroup iface_xdg_wm_base
 *
 * Create a positioner object. A positioner object is used to position
 * surfaces relative to some parent surface. See the interface description
 * and xdg_surface.get_popup for details.
 */
static inline struct xdg_positioner *
xdg_wm_base_create_positioner(struct xdg_wm_base *xdg_wm_base)
{
	struct wl_proxy *id;

	id = wl_proxy_marshal_flags((struct wl_proxy *) xdg_wm_base,
			 XDG_WM_BASE_CREATE_POSITIONER, &xdg_positioner_interface, wl_proxy_get_version((struct wl_proxy *) xdg_wm_base), 0, NULL);

	return (struct xdg_positioner *) id;
}

/**
 * @ingroup iface_xdg_wm_base
 *
 * This creates an xdg_surface for the given surface. While xdg_surface
 * itself is not a role, the corresponding surface may only be assigned
 * a role extending xdg_surface, such as xdg_toplevel or xdg_popup. It is
 * illegal to create an xdg_surface for a wl_surface which already has an
 * assigned role and this will result in a protocol error.
 *
 * This creates an xdg_surface for the given surface. An xdg_surface is
 * used as basis to define a role to a given surface, such as xdg_toplevel
 * or xdg_popup. It also manages functionality shared between xdg_surface
 * based surface roles.
 *
 * See the documentation of xdg_surface for more details about what an
 * xdg_surface is and how it is used.
 */
static inline struct xdg_surface *
xdg_wm_base_get_xdg_surface(struct xdg_wm_base *xdg_wm_base, struct wl_surface *surface)
{
	struct wl_proxy *id;

	id = wl_proxy_marshal_flags((struct wl_proxy *) xdg_wm_base,
			 XDG_WM_BASE_GET_XDG_SURFACE, &xdg_surface_interface, wl_proxy_get_version((struct wl_proxy *) xdg_wm_base), 0, NULL, surface);

	return (struct xdg_surface *) id;
}

/**
 * @ingroup iface_xdg_wm_base
 *
 * A client must respond to a ping event with a pong request or
 * the client may be deemed unresponsive. See xdg_wm_base.ping.
 */
static inline void
xdg_wm_base_pong(struct xdg_wm_base *xdg_wm_base, uint32_t serial)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_wm_base,
			 XDG_WM_BASE_PONG, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_wm_base), 0, serial);
}

#ifndef XDG_POSITIONER_ERROR_ENUM
#define XDG_POSITIONER_ERROR_ENUM
enum xdg_positioner_error {
	/**
	 * invalid input provided
	 */
	XDG_POSITIONER_ERROR_INVALID_INPUT = 0,
};
#endif /* XDG_POSITIONER_ERROR_ENUM */

#ifndef XDG_POSITIONER_ANCHOR_ENUM
#define XDG_POSITIONER_ANCHOR_ENUM
enum xdg_positioner_anchor {
	XDG_POSITIONER_ANCHOR_NONE = 0,
	XDG_POSITIONER_ANCHOR_TOP = 1,
	XDG_POSITIONER_ANCHOR_BOTTOM = 2,
	XDG_POSITIONER_ANCHOR_LEFT = 3,
	XDG_POSITIONER_ANCHOR_RIGHT = 4,
	XDG_POSITIONER_ANCHOR_TOP_LEFT = 5,
	XDG_POSITIONER_ANCHOR_BOTTOM_LEFT = 6,
	XDG_POSITIONER_ANCHOR_TOP_RIGHT = 7,
	XDG_POSITIONER_ANCHOR_BOTTOM_RIGHT = 8,
};
#endif /* XDG_POSITIONER_ANCHOR_ENUM */

#ifndef XDG_POSITIONER_GRAVITY_ENUM
#define XDG_POSITIONER_GRAVITY_ENUM
enum xdg_positioner_gravity {
	XDG_POSITIONER_GRAVITY_NONE = 0,
	XDG_POSITIONER_GRAVITY_TOP = 1,
	XDG_POSITIONER_GRAVITY_BOTTOM = 2,
	XDG_POSITIONER_GRAVITY_LEFT = 3,
	XDG_POSITIONER_GRAVITY_RIGHT = 4,
	XDG_POSITIONER_GRAVITY_TOP_LEFT = 5,
	XDG_POSITIONER_GRAVITY_BOTTOM_LEFT = 6,
	XDG_POSITIONER_GRAVITY_TOP_RIGHT = 7,
	XDG_POSITIONER_GRAVITY_BOTTOM_RIGHT = 8,
};
#endif /* XDG_POSITIONER_GRAVITY_ENUM */

#ifndef XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_ENUM
#define XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_ENUM
/**
 * @ingroup iface_xdg_positioner
 * constraint adjustments
 *
 * The constraint adjustment value define ways the compositor will adjust
 * the position of the surface, if the unadjusted position would result
 * in the surface being partly constrained.
 *
 * Whether a surface is considered 'constrained' is left to the compositor
 * to determine. For example, the surface may be partly outside the
 * compositor's defined 'work area', thus necessitating the child surface's
 * position be adjusted until it is entirely inside the work area.
 *
 * The adjustments can be combined, according to a defined precedence: 1)
 * Flip, 2) Slide, 3) Resize.
 */
enum xdg_positioner_constraint_adjustment {
	/**
	 * don't move the child surface when constrained
	 *
	 * Don't alter the surface position even if it is constrained on
	 * some axis, for example partially outside the edge of an output.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_NONE = 0,
	/**
	 * move along the x axis until unconstrained
	 *
	 * Slide the surface along the x axis until it is no longer
	 * constrained.
	 *
	 * First try to slide towards the direction of the gravity on the x
	 * axis until either the edge in the opposite direction of the
	 * gravity is unconstrained or the edge in the direction of the
	 * gravity is constrained.
	 *
	 * Then try to slide towards the opposite direction of the gravity
	 * on the x axis until either the edge in the direction of the
	 * gravity is unconstrained or the edge in the opposite direction
	 * of the gravity is constrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X = 1,
	/**
	 * move along the y axis until unconstrained
	 *
	 * Slide the surface along the y axis until it is no longer
	 * constrained.
	 *
	 * First try to slide towards the direction of the gravity on the y
	 * axis until either the edge in the opposite direction of the
	 * gravity is unconstrained or the edge in the direction of the
	 * gravity is constrained.
	 *
	 * Then try to slide towards the opposite direction of the gravity
	 * on the y axis until either the edge in the direction of the
	 * gravity is unconstrained or the edge in the opposite direction
	 * of the gravity is constrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_Y = 2,
	/**
	 * invert the anchor and gravity on the x axis
	 *
	 * Invert the anchor and gravity on the x axis if the surface is
	 * constrained on the x axis. For example, if the left edge of the
	 * surface is constrained, the gravity is 'left' and the anchor is
	 * 'left', change the gravity to 'right' and the anchor to 'right'.
	 *
	 * If the adjusted position also ends up being constrained, the
	 * resulting position of the flip_x adjustment will be the one
	 * before the adjustment.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_X = 4,
	/**
	 * invert the anchor and gravity on the y axis
	 *
	 * Invert the anchor and gravity on the y axis if the surface is
	 * constrained on the y axis. For example, if the bottom edge of
	 * the surface is constrained, the gravity is 'bottom' and the
	 * anchor is 'bottom', change the gravity to 'top' and the anchor
	 * to 'top'.
	 *
	 * The adjusted position is calculated given the original anchor
	 * rectangle and offset, but with the new flipped anchor and
	 * gravity values.
	 *
	 * If the adjusted position also ends up being constrained, the
	 * resulting position of the flip_y adjustment will be the one
	 * before the adjustment.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_Y = 8,
	/**
	 * horizontally resize the surface
	 *
	 * Resize the surface horizontally so that it is completely
	 * unconstrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_RESIZE_X = 16,
	/**
	 * vertically resize the surface
	 *
	 * Resize the surface vertically so that it is completely
	 * unconstrained.
	 */
	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_RESIZE_Y = 32,
};
#endif /* XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_ENUM */

#define XDG_POSITIONER_DESTROY 0
#define XDG_POSITIONER_SET_SIZE 1
#define XDG_POSITIONER_SET_ANCHOR_RECT 2
#define XDG_POSITIONER_SET_ANCHOR 3
#define XDG_POSITIONER_SET_GRAVITY 4
#define XDG_POSITIONER_SET_CONSTRAINT_ADJUSTMENT 5
#define XDG_POSITIONER_SET_OFFSET 6
#define XDG_POSITIONER_SET_REACTIVE 7
#define XDG_POSITIONER_SET_PARENT_SIZE 8
#define XDG_POSITIONER_SET_PARENT_CONFIGURE 9


/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_SIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_ANCHOR_RECT_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_ANCHOR_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_GRAVITY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_CONSTRAINT_ADJUSTMENT_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_OFFSET_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_REACTIVE_SINCE_VERSION 3
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_PARENT_SIZE_SINCE_VERSION 3
/**
 * @ingroup iface_xdg_positioner
 */
#define XDG_POSITIONER_SET_PARENT_CONFIGURE_SINCE_VERSION 3

/** @ingroup iface_xdg_positioner */
static inline void
xdg_positioner_set_user_data(struct xdg_positioner *xdg_positioner, void *user_data)
{
	wl_proxy_set_user_data((struct wl_proxy *) xdg_positioner, user_data);
}

/** @ingroup iface_xdg_positioner */
static inline void *
xdg_positioner_get_user_data(struct xdg_positioner *xdg_positioner)
{
	return wl_proxy_get_user_data((struct wl_proxy *) xdg_positioner);
}

static inline uint32_t
xdg_positioner_get_version(struct xdg_positioner *xdg_positioner)
{
	return wl_proxy_get_version((struct wl_proxy *) xdg_positioner);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Notify the compositor that the xdg_positioner will no longer be used.
 */
static inline void
xdg_positioner_destroy(struct xdg_positioner *xdg_positioner)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), WL_MARSHAL_FLAG_DESTROY);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Set the size of the surface that is to be positioned with the positioner
 * object. The size is in surface-local coordinates and corresponds to the
 * window geometry. See xdg_surface.set_window_geometry.
 *
 * If a zero or negative size is set the invalid_input error is raised.
 */
static inline void
xdg_positioner_set_size(struct xdg_positioner *xdg_positioner, int32_t width, int32_t height)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_SIZE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, width, height);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Specify the anchor rectangle within the parent surface that the child
 * surface will be placed relative to. The rectangle is relative to the
 * window geometry as defined by xdg_surface.set_window_geometry of the
 * parent surface.
 *
 * When the xdg_positioner object is used to position a child surface, the
 * anchor rectangle may not extend outside the window geometry of the
 * positioned child's parent surface.
 *
 * If a negative size is set the invalid_input error is raised.
 */
static inline void
xdg_positioner_set_anchor_rect(struct xdg_positioner *xdg_positioner, int32_t x, int32_t y, int32_t width, int32_t height)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_ANCHOR_RECT, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, x, y, width, height);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Defines the anchor point for the anchor rectangle. The specified anchor
 * is used derive an anchor point that the child surface will be
 * positioned relative to. If a corner anchor is set (e.g. 'top_left' or
 * 'bottom_right'), the anchor point will be at the specified corner;
 * otherwise, the derived anchor point will be centered on the specified
 * edge, or in the center of the anchor rectangle if no edge is specified.
 */
static inline void
xdg_positioner_set_anchor(struct xdg_positioner *xdg_positioner, uint32_t anchor)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_ANCHOR, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, anchor);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Defines in what direction a surface should be positioned, relative to
 * the anchor point of the parent surface. If a corner gravity is
 * specified (e.g. 'bottom_right' or 'top_left'), then the child surface
 * will be placed towards the specified gravity; otherwise, the child
 * surface will be centered over the anchor point on any axis that had no
 * gravity specified.
 */
static inline void
xdg_positioner_set_gravity(struct xdg_positioner *xdg_positioner, uint32_t gravity)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_GRAVITY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, gravity);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Specify how the window should be positioned if the originally intended
 * position caused the surface to be constrained, meaning at least
 * partially outside positioning boundaries set by the compositor. The
 * adjustment is set by constructing a bitmask describing the adjustment to
 * be made when the surface is constrained on that axis.
 *
 * If no bit for one axis is set, the compositor will assume that the child
 * surface should not change its position on that axis when constrained.
 *
 * If more than one bit for one axis is set, the order of how adjustments
 * are applied is specified in the corresponding adjustment descriptions.
 *
 * The default adjustment is none.
 */
static inline void
xdg_positioner_set_constraint_adjustment(struct xdg_positioner *xdg_positioner, uint32_t constraint_adjustment)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_CONSTRAINT_ADJUSTMENT, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, constraint_adjustment);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Specify the surface position offset relative to the position of the
 * anchor on the anchor rectangle and the anchor on the surface. For
 * example if the anchor of the anchor rectangle is at (x, y), the surface
 * has the gravity bottom|right, and the offset is (ox, oy), the calculated
 * surface position will be (x + ox, y + oy). The offset position of the
 * surface is the one used for constraint testing. See
 * set_constraint_adjustment.
 *
 * An example use case is placing a popup menu on top of a user interface
 * element, while aligning the user interface element of the parent surface
 * with some user interface element placed somewhere in the popup surface.
 */
static inline void
xdg_positioner_set_offset(struct xdg_positioner *xdg_positioner, int32_t x, int32_t y)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_OFFSET, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, x, y);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * When set reactive, the surface is reconstrained if the conditions used
 * for constraining changed, e.g. the parent window moved.
 *
 * If the conditions changed and the popup was reconstrained, an
 * xdg_popup.configure event is sent with updated geometry, followed by an
 * xdg_surface.configure event.
 */
static inline void
xdg_positioner_set_reactive(struct xdg_positioner *xdg_positioner)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_REACTIVE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Set the parent window geometry the compositor should use when
 * positioning the popup. The compositor may use this information to
 * determine the future state the popup should be constrained using. If
 * this doesn't match the dimension of the parent the popup is eventually
 * positioned against, the behavior is undefined.
 *
 * The arguments are given in the surface-local coordinate space.
 */
static inline void
xdg_positioner_set_parent_size(struct xdg_positioner *xdg_positioner, int32_t parent_width, int32_t parent_height)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_PARENT_SIZE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, parent_width, parent_height);
}

/**
 * @ingroup iface_xdg_positioner
 *
 * Set the serial of an xdg_surface.configure event this positioner will be
 * used in response to. The compositor may use this information together
 * with set_parent_size to determine what future state the popup should be
 * constrained using.
 */
static inline void
xdg_positioner_set_parent_configure(struct xdg_positioner *xdg_positioner, uint32_t serial)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_positioner,
			 XDG_POSITIONER_SET_PARENT_CONFIGURE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_positioner), 0, serial);
}

#ifndef XDG_SURFACE_ERROR_ENUM
#define XDG_SURFACE_ERROR_ENUM
enum xdg_surface_error {
	XDG_SURFACE_ERROR_NOT_CONSTRUCTED = 1,
	XDG_SURFACE_ERROR_ALREADY_CONSTRUCTED = 2,
	XDG_SURFACE_ERROR_UNCONFIGURED_BUFFER = 3,
};
#endif /* XDG_SURFACE_ERROR_ENUM */

/**
 * @ingroup iface_xdg_surface
 * @struct xdg_surface_listener
 */
struct xdg_surface_listener {
	/**
	 * suggest a surface change
	 *
	 * The configure event marks the end of a configure sequence. A
	 * configure sequence is a set of one or more events configuring
	 * the state of the xdg_surface, including the final
	 * xdg_surface.configure event.
	 *
	 * Where applicable, xdg_surface surface roles will during a
	 * configure sequence extend this event as a latched state sent as
	 * events before the xdg_surface.configure event. Such events
	 * should be considered to make up a set of atomically applied
	 * configuration states, where the xdg_surface.configure commits
	 * the accumulated state.
	 *
	 * Clients should arrange their surface for the new states, and
	 * then send an ack_configure request with the serial sent in this
	 * configure event at some point before committing the new surface.
	 *
	 * If the client receives multiple configure events before it can
	 * respond to one, it is free to discard all but the last event it
	 * received.
	 * @param serial serial of the configure event
	 */
	void (*configure)(void *data,
			  struct xdg_surface *xdg_surface,
			  uint32_t serial);
};

/**
 * @ingroup iface_xdg_surface
 */
static inline int
xdg_surface_add_listener(struct xdg_surface *xdg_surface,
			 const struct xdg_surface_listener *listener, void *data)
{
	return wl_proxy_add_listener((struct wl_proxy *) xdg_surface,
				     (void (**)(void)) listener, data);
}

#define XDG_SURFACE_DESTROY 0
#define XDG_SURFACE_GET_TOPLEVEL 1
#define XDG_SURFACE_GET_POPUP 2
#define XDG_SURFACE_SET_WINDOW_GEOMETRY 3
#define XDG_SURFACE_ACK_CONFIGURE 4

/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_CONFIGURE_SINCE_VERSION 1

/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_GET_TOPLEVEL_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_GET_POPUP_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_SET_WINDOW_GEOMETRY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_surface
 */
#define XDG_SURFACE_ACK_CONFIGURE_SINCE_VERSION 1

/** @ingroup iface_xdg_surface */
static inline void
xdg_surface_set_user_data(struct xdg_surface *xdg_surface, void *user_data)
{
	wl_proxy_set_user_data((struct wl_proxy *) xdg_surface, user_data);
}

/** @ingroup iface_xdg_surface */
static inline void *
xdg_surface_get_user_data(struct xdg_surface *xdg_surface)
{
	return wl_proxy_get_user_data((struct wl_proxy *) xdg_surface);
}

static inline uint32_t
xdg_surface_get_version(struct xdg_surface *xdg_surface)
{
	return wl_proxy_get_version((struct wl_proxy *) xdg_surface);
}

/**
 * @ingroup iface_xdg_surface
 *
 * Destroy the xdg_surface object. An xdg_surface must only be destroyed
 * after its role object has been destroyed.
 */
static inline void
xdg_surface_destroy(struct xdg_surface *xdg_surface)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_surface,
			 XDG_SURFACE_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_surface), WL_MARSHAL_FLAG_DESTROY);
}

/**
 * @ingroup iface_xdg_surface
 *
 * This creates an xdg_toplevel object for the given xdg_surface and gives
 * the associated wl_surface the xdg_toplevel role.
 *
 * See the documentation of xdg_toplevel for more details about what an
 * xdg_toplevel is and how it is used.
 */
static inline struct xdg_toplevel *
xdg_surface_get_toplevel(struct xdg_surface *xdg_surface)
{
	struct wl_proxy *id;

	id = wl_proxy_marshal_flags((struct wl_proxy *) xdg_surface,
			 XDG_SURFACE_GET_TOPLEVEL, &xdg_toplevel_interface, wl_proxy_get_version((struct wl_proxy *) xdg_surface), 0, NULL);

	return (struct xdg_toplevel *) id;
}

/**
 * @ingroup iface_xdg_surface
 *
 * This creates an xdg_popup object for the given xdg_surface and gives
 * the associated wl_surface the xdg_popup role.
 *
 * If null is passed as a parent, a parent surface must be specified using
 * some other protocol, before committing the initial state.
 *
 * See the documentation of xdg_popup for more details about what an
 * xdg_popup is and how it is used.
 */
static inline struct xdg_popup *
xdg_surface_get_popup(struct xdg_surface *xdg_surface, struct xdg_surface *parent, struct xdg_positioner *positioner)
{
	struct wl_proxy *id;

	id = wl_proxy_marshal_flags((struct wl_proxy *) xdg_surface,
			 XDG_SURFACE_GET_POPUP, &xdg_popup_interface, wl_proxy_get_version((struct wl_proxy *) xdg_surface), 0, NULL, parent, positioner);

	return (struct xdg_popup *) id;
}

/**
 * @ingroup iface_xdg_surface
 *
 * The window geometry of a surface is its "visible bounds" from the
 * user's perspective. Client-side decorations often have invisible
 * portions like drop-shadows which should be ignored for the
 * purposes of aligning, placing and constraining windows.
 *
 * The window geometry is double buffered, and will be applied at the
 * time wl_surface.commit of the corresponding wl_surface is called.
 *
 * When maintaining a position, the compositor should treat the (x, y)
 * coordinate of the window geometry as the top left corner of the window.
 * A client changing the (x, y) window geometry coordinate should in
 * general not alter the position of the window.
 *
 * Once the window geometry of the surface is set, it is not possible to
 * unset it, and it will remain the same until set_window_geometry is
 * called again, even if a new subsurface or buffer is attached.
 *
 * If never set, the value is the full bounds of the surface,
 * including any subsurfaces. This updates dynamically on every
 * commit. This unset is meant for extremely simple clients.
 *
 * The arguments are given in the surface-local coordinate space of
 * the wl_surface associated with this xdg_surface.
 *
 * The width and height must be greater than zero. Setting an invalid size
 * will raise an error. When applied, the effective window geometry will be
 * the set window geometry clamped to the bounding rectangle of the
 * combined geometry of the surface of the xdg_surface and the associated
 * subsurfaces.
 */
static inline void
xdg_surface_set_window_geometry(struct xdg_surface *xdg_surface, int32_t x, int32_t y, int32_t width, int32_t height)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_surface,
			 XDG_SURFACE_SET_WINDOW_GEOMETRY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_surface), 0, x, y, width, height);
}

/**
 * @ingroup iface_xdg_surface
 *
 * When a configure event is received, if a client commits the
 * surface in response to the configure event, then the client
 * must make an ack_configure request sometime before the commit
 * request, passing along the serial of the configure event.
 *
 * For instance, for toplevel surfaces the compositor might use this
 * information to move a surface to the top left only when the client has
 * drawn itself for the maximized or fullscreen state.
 *
 * If the client receives multiple configure events before it
 * can respond to one, it only has to ack the last configure event.
 *
 * A client is not required to commit immediately after sending
 * an ack_configure request - it may even ack_configure several times
 * before its next surface commit.
 *
 * A client may send multiple ack_configure requests before committing, but
 * only the last request sent before a commit indicates which configure
 * event the client really is responding to.
 */
static inline void
xdg_surface_ack_configure(struct xdg_surface *xdg_surface, uint32_t serial)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_surface,
			 XDG_SURFACE_ACK_CONFIGURE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_surface), 0, serial);
}

#ifndef XDG_TOPLEVEL_ERROR_ENUM
#define XDG_TOPLEVEL_ERROR_ENUM
enum xdg_toplevel_error {
	/**
	 * provided value is         not a valid variant of the resize_edge enum
	 */
	XDG_TOPLEVEL_ERROR_INVALID_RESIZE_EDGE = 0,
};
#endif /* XDG_TOPLEVEL_ERROR_ENUM */

#ifndef XDG_TOPLEVEL_RESIZE_EDGE_ENUM
#define XDG_TOPLEVEL_RESIZE_EDGE_ENUM
/**
 * @ingroup iface_xdg_toplevel
 * edge values for resizing
 *
 * These values are used to indicate which edge of a surface
 * is being dragged in a resize operation.
 */
enum xdg_toplevel_resize_edge {
	XDG_TOPLEVEL_RESIZE_EDGE_NONE = 0,
	XDG_TOPLEVEL_RESIZE_EDGE_TOP = 1,
	XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM = 2,
	XDG_TOPLEVEL_RESIZE_EDGE_LEFT = 4,
	XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT = 5,
	XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT = 6,
	XDG_TOPLEVEL_RESIZE_EDGE_RIGHT = 8,
	XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT = 9,
	XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT = 10,
};
#endif /* XDG_TOPLEVEL_RESIZE_EDGE_ENUM */

#ifndef XDG_TOPLEVEL_STATE_ENUM
#define XDG_TOPLEVEL_STATE_ENUM
/**
 * @ingroup iface_xdg_toplevel
 * types of state on the surface
 *
 * The different state values used on the surface. This is designed for
 * state values like maximized, fullscreen. It is paired with the
 * configure event to ensure that both the client and the compositor
 * setting the state can be synchronized.
 *
 * States set in this way are double-buffered. They will get applied on
 * the next commit.
 */
enum xdg_toplevel_state {
	/**
	 * the surface is maximized
	 * the surface is maximized
	 *
	 * The surface is maximized. The window geometry specified in the
	 * configure event must be obeyed by the client.
	 *
	 * The client should draw without shadow or other decoration
	 * outside of the window geometry.
	 */
	XDG_TOPLEVEL_STATE_MAXIMIZED = 1,
	/**
	 * the surface is fullscreen
	 * the surface is fullscreen
	 *
	 * The surface is fullscreen. The window geometry specified in
	 * the configure event is a maximum; the client cannot resize
	 * beyond it. For a surface to cover the whole fullscreened area,
	 * the geometry dimensions must be obeyed by the client. For more
	 * details, see xdg_toplevel.set_fullscreen.
	 */
	XDG_TOPLEVEL_STATE_FULLSCREEN = 2,
	/**
	 * the surface is being resized
	 * the surface is being resized
	 *
	 * The surface is being resized. The window geometry specified in
	 * the configure event is a maximum; the client cannot resize
	 * beyond it. Clients that have aspect ratio or cell sizing
	 * configuration can use a smaller size, however.
	 */
	XDG_TOPLEVEL_STATE_RESIZING = 3,
	/**
	 * the surface is now activated
	 * the surface is now activated
	 *
	 * Client window decorations should be painted as if the window
	 * is active. Do not assume this means that the window actually has
	 * keyboard or pointer focus.
	 */
	XDG_TOPLEVEL_STATE_ACTIVATED = 4,
	/**
	 * the surface’s left edge is tiled
	 *
	 * The window is currently in a tiled layout and the left edge is
	 * considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_LEFT = 5,
	/**
	 * the surface’s right edge is tiled
	 *
	 * The window is currently in a tiled layout and the right edge
	 * is considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_RIGHT = 6,
	/**
	 * the surface’s top edge is tiled
	 *
	 * The window is currently in a tiled layout and the top edge is
	 * considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_TOP = 7,
	/**
	 * the surface’s bottom edge is tiled
	 *
	 * The window is currently in a tiled layout and the bottom edge
	 * is considered to be adjacent to another part of the tiling grid.
	 * @since 2
	 */
	XDG_TOPLEVEL_STATE_TILED_BOTTOM = 8,
};
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_LEFT_SINCE_VERSION 2
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_RIGHT_SINCE_VERSION 2
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_TOP_SINCE_VERSION 2
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_STATE_TILED_BOTTOM_SINCE_VERSION 2
#endif /* XDG_TOPLEVEL_STATE_ENUM */

/**
 * @ingroup iface_xdg_toplevel
 * @struct xdg_toplevel_listener
 */
struct xdg_toplevel_listener {
	/**
	 * suggest a surface change
	 *
	 * This configure event asks the client to resize its toplevel
	 * surface or to change its state. The configured state should not
	 * be applied immediately. See xdg_surface.configure for details.
	 *
	 * The width and height arguments specify a hint to the window
	 * about how its surface should be resized in window geometry
	 * coordinates. See set_window_geometry.
	 *
	 * If the width or height arguments are zero, it means the client
	 * should decide its own window dimension. This may happen when the
	 * compositor needs to configure the state of the surface but
	 * doesn't have any information about any previous or expected
	 * dimension.
	 *
	 * The states listed in the event specify how the width/height
	 * arguments should be interpreted, and possibly how it should be
	 * drawn.
	 *
	 * Clients must send an ack_configure in response to this event.
	 * See xdg_surface.configure and xdg_surface.ack_configure for
	 * details.
	 */
	void (*configure)(void *data,
			  struct xdg_toplevel *xdg_toplevel,
			  int32_t width,
			  int32_t height,
			  struct wl_array *states);
	/**
	 * surface wants to be closed
	 *
	 * The close event is sent by the compositor when the user wants
	 * the surface to be closed. This should be equivalent to the user
	 * clicking the close button in client-side decorations, if your
	 * application has any.
	 *
	 * This is only a request that the user intends to close the
	 * window. The client may choose to ignore this request, or show a
	 * dialog to ask the user to save their data, etc.
	 */
	void (*close)(void *data,
		      struct xdg_toplevel *xdg_toplevel);
	/**
	 * recommended window geometry bounds
	 *
	 * The configure_bounds event may be sent prior to a
	 * xdg_toplevel.configure event to communicate the bounds a window
	 * geometry size is recommended to constrain to.
	 *
	 * The passed width and height are in surface coordinate space. If
	 * width and height are 0, it means bounds is unknown and
	 * equivalent to as if no configure_bounds event was ever sent for
	 * this surface.
	 *
	 * The bounds can for example correspond to the size of a monitor
	 * excluding any panels or other shell components, so that a
	 * surface isn't created in a way that it cannot fit.
	 *
	 * The bounds may change at any point, and in such a case, a new
	 * xdg_toplevel.configure_bounds will be sent, followed by
	 * xdg_toplevel.configure and xdg_surface.configure.
	 * @since 4
	 */
	void (*configure_bounds)(void *data,
				 struct xdg_toplevel *xdg_toplevel,
				 int32_t width,
				 int32_t height);
};

/**
 * @ingroup iface_xdg_toplevel
 */
static inline int
xdg_toplevel_add_listener(struct xdg_toplevel *xdg_toplevel,
			  const struct xdg_toplevel_listener *listener, void *data)
{
	return wl_proxy_add_listener((struct wl_proxy *) xdg_toplevel,
				     (void (**)(void)) listener, data);
}

#define XDG_TOPLEVEL_DESTROY 0
#define XDG_TOPLEVEL_SET_PARENT 1
#define XDG_TOPLEVEL_SET_TITLE 2
#define XDG_TOPLEVEL_SET_APP_ID 3
#define XDG_TOPLEVEL_SHOW_WINDOW_MENU 4
#define XDG_TOPLEVEL_MOVE 5
#define XDG_TOPLEVEL_RESIZE 6
#define XDG_TOPLEVEL_SET_MAX_SIZE 7
#define XDG_TOPLEVEL_SET_MIN_SIZE 8
#define XDG_TOPLEVEL_SET_MAXIMIZED 9
#define XDG_TOPLEVEL_UNSET_MAXIMIZED 10
#define XDG_TOPLEVEL_SET_FULLSCREEN 11
#define XDG_TOPLEVEL_UNSET_FULLSCREEN 12
#define XDG_TOPLEVEL_SET_MINIMIZED 13

/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_CONFIGURE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_CLOSE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_CONFIGURE_BOUNDS_SINCE_VERSION 4

/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_PARENT_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_TITLE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_APP_ID_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SHOW_WINDOW_MENU_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_MOVE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_RESIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MAX_SIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MIN_SIZE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MAXIMIZED_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_UNSET_MAXIMIZED_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_FULLSCREEN_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_UNSET_FULLSCREEN_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_toplevel
 */
#define XDG_TOPLEVEL_SET_MINIMIZED_SINCE_VERSION 1

/** @ingroup iface_xdg_toplevel */
static inline void
xdg_toplevel_set_user_data(struct xdg_toplevel *xdg_toplevel, void *user_data)
{
	wl_proxy_set_user_data((struct wl_proxy *) xdg_toplevel, user_data);
}

/** @ingroup iface_xdg_toplevel */
static inline void *
xdg_toplevel_get_user_data(struct xdg_toplevel *xdg_toplevel)
{
	return wl_proxy_get_user_data((struct wl_proxy *) xdg_toplevel);
}

static inline uint32_t
xdg_toplevel_get_version(struct xdg_toplevel *xdg_toplevel)
{
	return wl_proxy_get_version((struct wl_proxy *) xdg_toplevel);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * This request destroys the role surface and unmaps the surface;
 * see "Unmapping" behavior in interface section for details.
 */
static inline void
xdg_toplevel_destroy(struct xdg_toplevel *xdg_toplevel)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), WL_MARSHAL_FLAG_DESTROY);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Set the "parent" of this surface. This surface should be stacked
 * above the parent surface and all other ancestor surfaces.
 *
 * Parent windows should be set on dialogs, toolboxes, or other
 * "auxiliary" surfaces, so that the parent is raised when the dialog
 * is raised.
 *
 * Setting a null parent for a child window removes any parent-child
 * relationship for the child. Setting a null parent for a window which
 * currently has no parent is a no-op.
 *
 * If the parent is unmapped then its children are managed as
 * though the parent of the now-unmapped parent has become the
 * parent of this surface. If no parent exists for the now-unmapped
 * parent then the children are managed as though they have no
 * parent surface.
 */
static inline void
xdg_toplevel_set_parent(struct xdg_toplevel *xdg_toplevel, struct xdg_toplevel *parent)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_PARENT, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, parent);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Set a short title for the surface.
 *
 * This string may be used to identify the surface in a task bar,
 * window list, or other user interface elements provided by the
 * compositor.
 *
 * The string must be encoded in UTF-8.
 */
static inline void
xdg_toplevel_set_title(struct xdg_toplevel *xdg_toplevel, const char *title)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_TITLE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, title);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Set an application identifier for the surface.
 *
 * The app ID identifies the general class of applications to which
 * the surface belongs. The compositor can use this to group multiple
 * surfaces together, or to determine how to launch a new application.
 *
 * For D-Bus activatable applications, the app ID is used as the D-Bus
 * service name.
 *
 * The compositor shell will try to group application surfaces together
 * by their app ID. As a best practice, it is suggested to select app
 * ID's that match the basename of the application's .desktop file.
 * For example, "org.freedesktop.FooViewer" where the .desktop file is
 * "org.freedesktop.FooViewer.desktop".
 *
 * Like other properties, a set_app_id request can be sent after the
 * xdg_toplevel has been mapped to update the property.
 *
 * See the desktop-entry specification [0] for more details on
 * application identifiers and how they relate to well-known D-Bus
 * names and .desktop files.
 *
 * [0] http://standards.freedesktop.org/desktop-entry-spec/
 */
static inline void
xdg_toplevel_set_app_id(struct xdg_toplevel *xdg_toplevel, const char *app_id)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_APP_ID, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, app_id);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Clients implementing client-side decorations might want to show
 * a context menu when right-clicking on the decorations, giving the
 * user a menu that they can use to maximize or minimize the window.
 *
 * This request asks the compositor to pop up such a window menu at
 * the given position, relative to the local surface coordinates of
 * the parent surface. There are no guarantees as to what menu items
 * the window menu contains.
 *
 * This request must be used in response to some sort of user action
 * like a button press, key press, or touch down event.
 */
static inline void
xdg_toplevel_show_window_menu(struct xdg_toplevel *xdg_toplevel, struct wl_seat *seat, uint32_t serial, int32_t x, int32_t y)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SHOW_WINDOW_MENU, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, seat, serial, x, y);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Start an interactive, user-driven move of the surface.
 *
 * This request must be used in response to some sort of user action
 * like a button press, key press, or touch down event. The passed
 * serial is used to determine the type of interactive move (touch,
 * pointer, etc).
 *
 * The server may ignore move requests depending on the state of
 * the surface (e.g. fullscreen or maximized), or if the passed serial
 * is no longer valid.
 *
 * If triggered, the surface will lose the focus of the device
 * (wl_pointer, wl_touch, etc) used for the move. It is up to the
 * compositor to visually indicate that the move is taking place, such as
 * updating a pointer cursor, during the move. There is no guarantee
 * that the device focus will return when the move is completed.
 */
static inline void
xdg_toplevel_move(struct xdg_toplevel *xdg_toplevel, struct wl_seat *seat, uint32_t serial)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_MOVE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, seat, serial);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Start a user-driven, interactive resize of the surface.
 *
 * This request must be used in response to some sort of user action
 * like a button press, key press, or touch down event. The passed
 * serial is used to determine the type of interactive resize (touch,
 * pointer, etc).
 *
 * The server may ignore resize requests depending on the state of
 * the surface (e.g. fullscreen or maximized).
 *
 * If triggered, the client will receive configure events with the
 * "resize" state enum value and the expected sizes. See the "resize"
 * enum value for more details about what is required. The client
 * must also acknowledge configure events using "ack_configure". After
 * the resize is completed, the client will receive another "configure"
 * event without the resize state.
 *
 * If triggered, the surface also will lose the focus of the device
 * (wl_pointer, wl_touch, etc) used for the resize. It is up to the
 * compositor to visually indicate that the resize is taking place,
 * such as updating a pointer cursor, during the resize. There is no
 * guarantee that the device focus will return when the resize is
 * completed.
 *
 * The edges parameter specifies how the surface should be resized, and
 * is one of the values of the resize_edge enum. Values not matching
 * a variant of the enum will cause a protocol error. The compositor
 * may use this information to update the surface position for example
 * when dragging the top left corner. The compositor may also use
 * this information to adapt its behavior, e.g. choose an appropriate
 * cursor image.
 */
static inline void
xdg_toplevel_resize(struct xdg_toplevel *xdg_toplevel, struct wl_seat *seat, uint32_t serial, uint32_t edges)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_RESIZE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, seat, serial, edges);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Set a maximum size for the window.
 *
 * The client can specify a maximum size so that the compositor does
 * not try to configure the window beyond this size.
 *
 * The width and height arguments are in window geometry coordinates.
 * See xdg_surface.set_window_geometry.
 *
 * Values set in this way are double-buffered. They will get applied
 * on the next commit.
 *
 * The compositor can use this information to allow or disallow
 * different states like maximize or fullscreen and draw accurate
 * animations.
 *
 * Similarly, a tiling window manager may use this information to
 * place and resize client windows in a more effective way.
 *
 * The client should not rely on the compositor to obey the maximum
 * size. The compositor may decide to ignore the values set by the
 * client and request a larger size.
 *
 * If never set, or a value of zero in the request, means that the
 * client has no expected maximum size in the given dimension.
 * As a result, a client wishing to reset the maximum size
 * to an unspecified state can use zero for width and height in the
 * request.
 *
 * Requesting a maximum size to be smaller than the minimum size of
 * a surface is illegal and will result in a protocol error.
 *
 * The width and height must be greater than or equal to zero. Using
 * strictly negative values for width and height will result in a
 * protocol error.
 */
static inline void
xdg_toplevel_set_max_size(struct xdg_toplevel *xdg_toplevel, int32_t width, int32_t height)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_MAX_SIZE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, width, height);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Set a minimum size for the window.
 *
 * The client can specify a minimum size so that the compositor does
 * not try to configure the window below this size.
 *
 * The width and height arguments are in window geometry coordinates.
 * See xdg_surface.set_window_geometry.
 *
 * Values set in this way are double-buffered. They will get applied
 * on the next commit.
 *
 * The compositor can use this information to allow or disallow
 * different states like maximize or fullscreen and draw accurate
 * animations.
 *
 * Similarly, a tiling window manager may use this information to
 * place and resize client windows in a more effective way.
 *
 * The client should not rely on the compositor to obey the minimum
 * size. The compositor may decide to ignore the values set by the
 * client and request a smaller size.
 *
 * If never set, or a value of zero in the request, means that the
 * client has no expected minimum size in the given dimension.
 * As a result, a client wishing to reset the minimum size
 * to an unspecified state can use zero for width and height in the
 * request.
 *
 * Requesting a minimum size to be larger than the maximum size of
 * a surface is illegal and will result in a protocol error.
 *
 * The width and height must be greater than or equal to zero. Using
 * strictly negative values for width and height will result in a
 * protocol error.
 */
static inline void
xdg_toplevel_set_min_size(struct xdg_toplevel *xdg_toplevel, int32_t width, int32_t height)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_MIN_SIZE, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, width, height);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Maximize the surface.
 *
 * After requesting that the surface should be maximized, the compositor
 * will respond by emitting a configure event. Whether this configure
 * actually sets the window maximized is subject to compositor policies.
 * The client must then update its content, drawing in the configured
 * state. The client must also acknowledge the configure when committing
 * the new content (see ack_configure).
 *
 * It is up to the compositor to decide how and where to maximize the
 * surface, for example which output and what region of the screen should
 * be used.
 *
 * If the surface was already maximized, the compositor will still emit
 * a configure event with the "maximized" state.
 *
 * If the surface is in a fullscreen state, this request has no direct
 * effect. It may alter the state the surface is returned to when
 * unmaximized unless overridden by the compositor.
 */
static inline void
xdg_toplevel_set_maximized(struct xdg_toplevel *xdg_toplevel)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_MAXIMIZED, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Unmaximize the surface.
 *
 * After requesting that the surface should be unmaximized, the compositor
 * will respond by emitting a configure event. Whether this actually
 * un-maximizes the window is subject to compositor policies.
 * If available and applicable, the compositor will include the window
 * geometry dimensions the window had prior to being maximized in the
 * configure event. The client must then update its content, drawing it in
 * the configured state. The client must also acknowledge the configure
 * when committing the new content (see ack_configure).
 *
 * It is up to the compositor to position the surface after it was
 * unmaximized; usually the position the surface had before maximizing, if
 * applicable.
 *
 * If the surface was already not maximized, the compositor will still
 * emit a configure event without the "maximized" state.
 *
 * If the surface is in a fullscreen state, this request has no direct
 * effect. It may alter the state the surface is returned to when
 * unmaximized unless overridden by the compositor.
 */
static inline void
xdg_toplevel_unset_maximized(struct xdg_toplevel *xdg_toplevel)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_UNSET_MAXIMIZED, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Make the surface fullscreen.
 *
 * After requesting that the surface should be fullscreened, the
 * compositor will respond by emitting a configure event. Whether the
 * client is actually put into a fullscreen state is subject to compositor
 * policies. The client must also acknowledge the configure when
 * committing the new content (see ack_configure).
 *
 * The output passed by the request indicates the client's preference as
 * to which display it should be set fullscreen on. If this value is NULL,
 * it's up to the compositor to choose which display will be used to map
 * this surface.
 *
 * If the surface doesn't cover the whole output, the compositor will
 * position the surface in the center of the output and compensate with
 * with border fill covering the rest of the output. The content of the
 * border fill is undefined, but should be assumed to be in some way that
 * attempts to blend into the surrounding area (e.g. solid black).
 *
 * If the fullscreened surface is not opaque, the compositor must make
 * sure that other screen content not part of the same surface tree (made
 * up of subsurfaces, popups or similarly coupled surfaces) are not
 * visible below the fullscreened surface.
 */
static inline void
xdg_toplevel_set_fullscreen(struct xdg_toplevel *xdg_toplevel, struct wl_output *output)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_FULLSCREEN, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0, output);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Make the surface no longer fullscreen.
 *
 * After requesting that the surface should be unfullscreened, the
 * compositor will respond by emitting a configure event.
 * Whether this actually removes the fullscreen state of the client is
 * subject to compositor policies.
 *
 * Making a surface unfullscreen sets states for the surface based on the following:
 * * the state(s) it may have had before becoming fullscreen
 * * any state(s) decided by the compositor
 * * any state(s) requested by the client while the surface was fullscreen
 *
 * The compositor may include the previous window geometry dimensions in
 * the configure event, if applicable.
 *
 * The client must also acknowledge the configure when committing the new
 * content (see ack_configure).
 */
static inline void
xdg_toplevel_unset_fullscreen(struct xdg_toplevel *xdg_toplevel)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_UNSET_FULLSCREEN, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0);
}

/**
 * @ingroup iface_xdg_toplevel
 *
 * Request that the compositor minimize your surface. There is no
 * way to know if the surface is currently minimized, nor is there
 * any way to unset minimization on this surface.
 *
 * If you are looking to throttle redrawing when minimized, please
 * instead use the wl_surface.frame event for this, as this will
 * also work with live previews on windows in Alt-Tab, Expose or
 * similar compositor features.
 */
static inline void
xdg_toplevel_set_minimized(struct xdg_toplevel *xdg_toplevel)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_toplevel,
			 XDG_TOPLEVEL_SET_MINIMIZED, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_toplevel), 0);
}

#ifndef XDG_POPUP_ERROR_ENUM
#define XDG_POPUP_ERROR_ENUM
enum xdg_popup_error {
	/**
	 * tried to grab after being mapped
	 */
	XDG_POPUP_ERROR_INVALID_GRAB = 0,
};
#endif /* XDG_POPUP_ERROR_ENUM */

/**
 * @ingroup iface_xdg_popup
 * @struct xdg_popup_listener
 */
struct xdg_popup_listener {
	/**
	 * configure the popup surface
	 *
	 * This event asks the popup surface to configure itself given
	 * the configuration. The configured state should not be applied
	 * immediately. See xdg_surface.configure for details.
	 *
	 * The x and y arguments represent the position the popup was
	 * placed at given the xdg_positioner rule, relative to the upper
	 * left corner of the window geometry of the parent surface.
	 *
	 * For version 2 or older, the configure event for an xdg_popup is
	 * only ever sent once for the initial configuration. Starting with
	 * version 3, it may be sent again if the popup is setup with an
	 * xdg_positioner with set_reactive requested, or in response to
	 * xdg_popup.reposition requests.
	 * @param x x position relative to parent surface window geometry
	 * @param y y position relative to parent surface window geometry
	 * @param width window geometry width
	 * @param height window geometry height
	 */
	void (*configure)(void *data,
			  struct xdg_popup *xdg_popup,
			  int32_t x,
			  int32_t y,
			  int32_t width,
			  int32_t height);
	/**
	 * popup interaction is done
	 *
	 * The popup_done event is sent out when a popup is dismissed by
	 * the compositor. The client should destroy the xdg_popup object
	 * at this point.
	 */
	void (*popup_done)(void *data,
			   struct xdg_popup *xdg_popup);
	/**
	 * signal the completion of a repositioned request
	 *
	 * The repositioned event is sent as part of a popup
	 * configuration sequence, together with xdg_popup.configure and
	 * lastly xdg_surface.configure to notify the completion of a
	 * reposition request.
	 *
	 * The repositioned event is to notify about the completion of a
	 * xdg_popup.reposition request. The token argument is the token
	 * passed in the xdg_popup.reposition request.
	 *
	 * Immediately after this event is emitted, xdg_popup.configure and
	 * xdg_surface.configure will be sent with the updated size and
	 * position, as well as a new configure serial.
	 *
	 * The client should optionally update the content of the popup,
	 * but must acknowledge the new popup configuration for the new
	 * position to take effect. See xdg_surface.ack_configure for
	 * details.
	 * @param token reposition request token
	 * @since 3
	 */
	void (*repositioned)(void *data,
			     struct xdg_popup *xdg_popup,
			     uint32_t token);
};

/**
 * @ingroup iface_xdg_popup
 */
static inline int
xdg_popup_add_listener(struct xdg_popup *xdg_popup,
		       const struct xdg_popup_listener *listener, void *data)
{
	return wl_proxy_add_listener((struct wl_proxy *) xdg_popup,
				     (void (**)(void)) listener, data);
}

#define XDG_POPUP_DESTROY 0
#define XDG_POPUP_GRAB 1
#define XDG_POPUP_REPOSITION 2

/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_CONFIGURE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_POPUP_DONE_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_REPOSITIONED_SINCE_VERSION 3

/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_DESTROY_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_GRAB_SINCE_VERSION 1
/**
 * @ingroup iface_xdg_popup
 */
#define XDG_POPUP_REPOSITION_SINCE_VERSION 3

/** @ingroup iface_xdg_popup */
static inline void
xdg_popup_set_user_data(struct xdg_popup *xdg_popup, void *user_data)
{
	wl_proxy_set_user_data((struct wl_proxy *) xdg_popup, user_data);
}

/** @ingroup iface_xdg_popup */
static inline void *
xdg_popup_get_user_data(struct xdg_popup *xdg_popup)
{
	return wl_proxy_get_user_data((struct wl_proxy *) xdg_popup);
}

static inline uint32_t
xdg_popup_get_version(struct xdg_popup *xdg_popup)
{
	return wl_proxy_get_version((struct wl_proxy *) xdg_popup);
}

/**
 * @ingroup iface_xdg_popup
 *
 * This destroys the popup. Explicitly destroying the xdg_popup
 * object will also dismiss the popup, and unmap the surface.
 *
 * If this xdg_popup is not the "topmost" popup, a protocol error
 * will be sent.
 */
static inline void
xdg_popup_destroy(struct xdg_popup *xdg_popup)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_popup,
			 XDG_POPUP_DESTROY, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_popup), WL_MARSHAL_FLAG_DESTROY);
}

/**
 * @ingroup iface_xdg_popup
 *
 * This request makes the created popup take an explicit grab. An explicit
 * grab will be dismissed when the user dismisses the popup, or when the
 * client destroys the xdg_popup. This can be done by the user clicking
 * outside the surface, using the keyboard, or even locking the screen
 * through closing the lid or a timeout.
 *
 * If the compositor denies the grab, the popup will be immediately
 * dismissed.
 *
 * This request must be used in response to some sort of user action like a
 * button press, key press, or touch down event. The serial number of the
 * event should be passed as 'serial'.
 *
 * The parent of a grabbing popup must either be an xdg_toplevel surface or
 * another xdg_popup with an explicit grab. If the parent is another
 * xdg_popup it means that the popups are nested, with this popup now being
 * the topmost popup.
 *
 * Nested popups must be destroyed in the reverse order they were created
 * in, e.g. the only popup you are allowed to destroy at all times is the
 * topmost one.
 *
 * When compositors choose to dismiss a popup, they may dismiss every
 * nested grabbing popup as well. When a compositor dismisses popups, it
 * will follow the same dismissing order as required from the client.
 *
 * The parent of a grabbing popup must either be another xdg_popup with an
 * active explicit grab, or an xdg_popup or xdg_toplevel, if there are no
 * explicit grabs already taken.
 *
 * If the topmost grabbing popup is destroyed, the grab will be returned to
 * the parent of the popup, if that parent previously had an explicit grab.
 *
 * If the parent is a grabbing popup which has already been dismissed, this
 * popup will be immediately dismissed. If the parent is a popup that did
 * not take an explicit grab, an error will be raised.
 *
 * During a popup grab, the client owning the grab will receive pointer
 * and touch events for all their surfaces as normal (similar to an
 * "owner-events" grab in X11 parlance), while the top most grabbing popup
 * will always have keyboard focus.
 */
static inline void
xdg_popup_grab(struct xdg_popup *xdg_popup, struct wl_seat *seat, uint32_t serial)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_popup,
			 XDG_POPUP_GRAB, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_popup), 0, seat, serial);
}

/**
 * @ingroup iface_xdg_popup
 *
 * Reposition an already-mapped popup. The popup will be placed given the
 * details in the passed xdg_positioner object, and a
 * xdg_popup.repositioned followed by xdg_popup.configure and
 * xdg_surface.configure will be emitted in response. Any parameters set
 * by the previous positioner will be discarded.
 *
 * The passed token will be sent in the corresponding
 * xdg_popup.repositioned event. The new popup position will not take
 * effect until the corresponding configure event is acknowledged by the
 * client. See xdg_popup.repositioned for details. The token itself is
 * opaque, and has no other special meaning.
 *
 * If multiple reposition requests are sent, the compositor may skip all
 * but the last one.
 *
 * If the popup is repositioned in response to a configure event for its
 * parent, the client should send an xdg_positioner.set_parent_configure
 * and possibly an xdg_positioner.set_parent_size request to allow the
 * compositor to properly constrain the popup.
 *
 * If the popup is repositioned together with a parent that is being
 * resized, but not in response to a configure event, the client should
 * send an xdg_positioner.set_parent_size request.
 */
static inline void
xdg_popup_reposition(struct xdg_popup *xdg_popup, struct xdg_positioner *positioner, uint32_t token)
{
	wl_proxy_marshal_flags((struct wl_proxy *) xdg_popup,
			 XDG_POPUP_REPOSITION, NULL, wl_proxy_get_version((struct wl_proxy *) xdg_popup), 0, positioner, token);
}

#ifdef  __cplusplus
}
#endif

#endif
/* ========================================================================= */
/* Generated by wayland-scanner 1.20.0 */

/*
 * Copyright © 2008-2013 Kristian Høgsberg
 * Copyright © 2013      Rafael Antognolli
 * Copyright © 2013      Jasper St. Pierre
 * Copyright © 2010-2013 Intel Corporation
 * Copyright © 2015-2017 Samsung Electronics Co., Ltd
 * Copyright © 2015-2017 Red Hat Inc.
 *
 * 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 <stdlib.h>
#include <stdint.h>
#include "wayland-util.h"

extern const struct wl_interface wl_output_interface;
extern const struct wl_interface wl_seat_interface;
extern const struct wl_interface wl_surface_interface;
extern const struct wl_interface xdg_popup_interface;
extern const struct wl_interface xdg_positioner_interface;
extern const struct wl_interface xdg_surface_interface;
extern const struct wl_interface xdg_toplevel_interface;

static const struct wl_interface *xdg_shell_types[] = {
	NULL,
	NULL,
	NULL,
	NULL,
	&xdg_positioner_interface,
	&xdg_surface_interface,
	&wl_surface_interface,
	&xdg_toplevel_interface,
	&xdg_popup_interface,
	&xdg_surface_interface,
	&xdg_positioner_interface,
	&xdg_toplevel_interface,
	&wl_seat_interface,
	NULL,
	NULL,
	NULL,
	&wl_seat_interface,
	NULL,
	&wl_seat_interface,
	NULL,
	NULL,
	&wl_output_interface,
	&wl_seat_interface,
	NULL,
	&xdg_positioner_interface,
	NULL,
};

static const struct wl_message xdg_wm_base_requests[] = {
	{ "destroy", "", xdg_shell_types + 0 },
	{ "create_positioner", "n", xdg_shell_types + 4 },
	{ "get_xdg_surface", "no", xdg_shell_types + 5 },
	{ "pong", "u", xdg_shell_types + 0 },
};

static const struct wl_message xdg_wm_base_events[] = {
	{ "ping", "u", xdg_shell_types + 0 },
};

WL_EXPORT const struct wl_interface xdg_wm_base_interface = {
	"xdg_wm_base", 4,
	4, xdg_wm_base_requests,
	1, xdg_wm_base_events,
};

static const struct wl_message xdg_positioner_requests[] = {
	{ "destroy", "", xdg_shell_types + 0 },
	{ "set_size", "ii", xdg_shell_types + 0 },
	{ "set_anchor_rect", "iiii", xdg_shell_types + 0 },
	{ "set_anchor", "u", xdg_shell_types + 0 },
	{ "set_gravity", "u", xdg_shell_types + 0 },
	{ "set_constraint_adjustment", "u", xdg_shell_types + 0 },
	{ "set_offset", "ii", xdg_shell_types + 0 },
	{ "set_reactive", "3", xdg_shell_types + 0 },
	{ "set_parent_size", "3ii", xdg_shell_types + 0 },
	{ "set_parent_configure", "3u", xdg_shell_types + 0 },
};

WL_EXPORT const struct wl_interface xdg_positioner_interface = {
	"xdg_positioner", 4,
	10, xdg_positioner_requests,
	0, NULL,
};

static const struct wl_message xdg_surface_requests[] = {
	{ "destroy", "", xdg_shell_types + 0 },
	{ "get_toplevel", "n", xdg_shell_types + 7 },
	{ "get_popup", "n?oo", xdg_shell_types + 8 },
	{ "set_window_geometry", "iiii", xdg_shell_types + 0 },
	{ "ack_configure", "u", xdg_shell_types + 0 },
};

static const struct wl_message xdg_surface_events[] = {
	{ "configure", "u", xdg_shell_types + 0 },
};

WL_EXPORT const struct wl_interface xdg_surface_interface = {
	"xdg_surface", 4,
	5, xdg_surface_requests,
	1, xdg_surface_events,
};

static const struct wl_message xdg_toplevel_requests[] = {
	{ "destroy", "", xdg_shell_types + 0 },
	{ "set_parent", "?o", xdg_shell_types + 11 },
	{ "set_title", "s", xdg_shell_types + 0 },
	{ "set_app_id", "s", xdg_shell_types + 0 },
	{ "show_window_menu", "ouii", xdg_shell_types + 12 },
	{ "move", "ou", xdg_shell_types + 16 },
	{ "resize", "ouu", xdg_shell_types + 18 },
	{ "set_max_size", "ii", xdg_shell_types + 0 },
	{ "set_min_size", "ii", xdg_shell_types + 0 },
	{ "set_maximized", "", xdg_shell_types + 0 },
	{ "unset_maximized", "", xdg_shell_types + 0 },
	{ "set_fullscreen", "?o", xdg_shell_types + 21 },
	{ "unset_fullscreen", "", xdg_shell_types + 0 },
	{ "set_minimized", "", xdg_shell_types + 0 },
};

static const struct wl_message xdg_toplevel_events[] = {
	{ "configure", "iia", xdg_shell_types + 0 },
	{ "close", "", xdg_shell_types + 0 },
	{ "configure_bounds", "4ii", xdg_shell_types + 0 },
};

WL_EXPORT const struct wl_interface xdg_toplevel_interface = {
	"xdg_toplevel", 4,
	14, xdg_toplevel_requests,
	3, xdg_toplevel_events,
};

static const struct wl_message xdg_popup_requests[] = {
	{ "destroy", "", xdg_shell_types + 0 },
	{ "grab", "ou", xdg_shell_types + 22 },
	{ "reposition", "3ou", xdg_shell_types + 24 },
};

static const struct wl_message xdg_popup_events[] = {
	{ "configure", "iiii", xdg_shell_types + 0 },
	{ "popup_done", "", xdg_shell_types + 0 },
	{ "repositioned", "3u", xdg_shell_types + 0 },
};

WL_EXPORT const struct wl_interface xdg_popup_interface = {
	"xdg_popup", 4,
	3, xdg_popup_requests,
	3, xdg_popup_events,
};

/* ========================================================================= */

/* Shared memory support code */
static void
randname(char *buf)
{
    struct timespec ts;
    clock_gettime(CLOCK_REALTIME, &ts);
    long r = ts.tv_nsec;
    for (int i = 0; i < 6; ++i) {
        buf[i] = 'A'+(r&15)+(r&16)*2;
        r >>= 5;
    }
}

static int
create_shm_file(void)
{
    int retries = 100;
    do {
        char name[] = "/wl_shm-XXXXXX";
        randname(name + sizeof(name) - 7);
        --retries;
        int fd = shm_open(name, O_RDWR | O_CREAT | O_EXCL, 0600);
        if (fd >= 0) {
            shm_unlink(name);
            return fd;
        }
    } while (retries > 0 && errno == EEXIST);
    return -1;
}

static int
allocate_shm_file(size_t size)
{
    int fd = create_shm_file();
    if (fd < 0)
        return -1;
    int ret;
    do {
        ret = ftruncate(fd, size);
    } while (ret < 0 && errno == EINTR);
    if (ret < 0) {
        close(fd);
        return -1;
    }
    return fd;
}

/* Wayland code */
struct client_state {
    /* Globals */
    struct wl_display *wl_display;
    struct wl_registry *wl_registry;
    struct wl_shm *wl_shm;
    struct wl_compositor *wl_compositor;
    struct xdg_wm_base *xdg_wm_base;
    /* Objects */
    struct wl_surface *wl_surface;
    struct xdg_surface *xdg_surface;
    struct xdg_toplevel *xdg_toplevel;
};

static void
wl_buffer_release(void *data, struct wl_buffer *wl_buffer)
{
    /* Sent by the compositor when it's no longer using this buffer */
    wl_buffer_destroy(wl_buffer);
}

static const struct wl_buffer_listener wl_buffer_listener = {
    .release = wl_buffer_release,
};

static struct wl_buffer *
draw_frame(struct client_state *state)
{
    const int width = 640, height = 480;
    int stride = width * 4;
    int size = stride * height;

    int fd = allocate_shm_file(size);
    if (fd == -1) {
        return NULL;
    }

    uint32_t *data = mmap(NULL, size,
            PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
    if (data == MAP_FAILED) {
        close(fd);
        return NULL;
    }

    struct wl_shm_pool *pool = wl_shm_create_pool(state->wl_shm, fd, size);
    struct wl_buffer *buffer = wl_shm_pool_create_buffer(pool, 0,
            width, height, stride, WL_SHM_FORMAT_XRGB8888);
    wl_shm_pool_destroy(pool);
    close(fd);

    /* Draw checkerboxed background */
    for (int y = 0; y < height; ++y) {
        for (int x = 0; x < width; ++x) {
            if ((x + y / 8 * 8) % 16 < 8)
                data[y * width + x] = 0xFF666666;
            else
                data[y * width + x] = 0xFFEEEEEE;
        }
    }

    munmap(data, size);
    wl_buffer_add_listener(buffer, &wl_buffer_listener, NULL);
    return buffer;
}

static void
xdg_surface_configure(void *data,
        struct xdg_surface *xdg_surface, uint32_t serial)
{
    struct client_state *state = data;
    xdg_surface_ack_configure(xdg_surface, serial);

    struct wl_buffer *buffer = draw_frame(state);
    wl_surface_attach(state->wl_surface, buffer, 0, 0);
    wl_surface_commit(state->wl_surface);
}

static const struct xdg_surface_listener xdg_surface_listener = {
    .configure = xdg_surface_configure,
};

static void
xdg_wm_base_ping(void *data, struct xdg_wm_base *xdg_wm_base, uint32_t serial)
{
    xdg_wm_base_pong(xdg_wm_base, serial);
}

static const struct xdg_wm_base_listener xdg_wm_base_listener = {
    .ping = xdg_wm_base_ping,
};

static void
registry_global(void *data, struct wl_registry *wl_registry,
        uint32_t name, const char *interface, uint32_t version)
{
    struct client_state *state = data;
    if (strcmp(interface, wl_shm_interface.name) == 0) {
        state->wl_shm = wl_registry_bind(
                wl_registry, name, &wl_shm_interface, 1);
    } else if (strcmp(interface, wl_compositor_interface.name) == 0) {
        state->wl_compositor = wl_registry_bind(
                wl_registry, name, &wl_compositor_interface, 4);
    } else if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
        state->xdg_wm_base = wl_registry_bind(
                wl_registry, name, &xdg_wm_base_interface, 1);
        xdg_wm_base_add_listener(state->xdg_wm_base,
                &xdg_wm_base_listener, state);
    }
}

static void
registry_global_remove(void *data,
        struct wl_registry *wl_registry, uint32_t name)
{
    /* This space deliberately left blank */
}

static const struct wl_registry_listener wl_registry_listener = {
    .global = registry_global,
    .global_remove = registry_global_remove,
};

int
main(int argc, char *argv[])
{
    struct client_state state = { 0 };
    state.wl_display = wl_display_connect(NULL);
    state.wl_registry = wl_display_get_registry(state.wl_display);
    wl_registry_add_listener(state.wl_registry, &wl_registry_listener, &state);
    wl_display_roundtrip(state.wl_display);

    state.wl_surface = wl_compositor_create_surface(state.wl_compositor);
    state.xdg_surface = xdg_wm_base_get_xdg_surface(
            state.xdg_wm_base, state.wl_surface);
    xdg_surface_add_listener(state.xdg_surface, &xdg_surface_listener, &state);
    state.xdg_toplevel = xdg_surface_get_toplevel(state.xdg_surface);
    xdg_toplevel_set_title(state.xdg_toplevel, "Example client");
    wl_surface_commit(state.wl_surface);

    while (wl_display_dispatch(state.wl_display)) {
        /* This space deliberately left blank */
    }

    return 0;
}