Create initial imv_window

4 files changed, 2489 insertions, 0 deletions

diff --git a/src/window.c b/src/window.c
new file mode 100644
index 0000000..c330f84
--- /dev/null
+++ b/src/window.c
@@ -0,0 +1,413 @@
+#include "window.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+
+#include <wayland-client.h>
+#include <wayland-egl.h>
+#include <EGL/egl.h>
+#include <GL/gl.h>
+#include "xdg-shell-client-protocol.h"
+
+struct imv_window {
+  struct wl_display    *wl_display;
+  struct wl_registry   *wl_registry;
+  struct wl_compositor *wl_compositor;
+  struct wl_surface    *wl_surface;
+  struct xdg_wm_base   *wl_xdg;
+  struct xdg_surface   *wl_xdg_surface;
+  struct xdg_toplevel  *wl_xdg_toplevel;
+  struct wl_seat       *wl_seat;
+  struct wl_keyboard   *wl_keyboard;
+  struct wl_pointer    *wl_pointer;
+  EGLDisplay           egl_display;
+  EGLContext           egl_context;
+  EGLSurface           egl_surface;
+  struct wl_egl_window *egl_window;
+
+  int width;
+  int height;
+  int scale;
+
+  struct {
+    struct imv_event *queue;
+    size_t len;
+    size_t cap;
+    pthread_mutex_t mutex;
+  } events;
+};
+
+static void
+handle_ping_xdg_wm_base(void *data, struct xdg_wm_base *xdg, uint32_t serial)
+{
+  (void)data;
+  xdg_wm_base_pong(xdg, serial);
+}
+
+static const struct xdg_wm_base_listener shell_listener_xdg = {
+  .ping = handle_ping_xdg_wm_base
+};
+
+static void keyboard_keymap(void *data, struct wl_keyboard *keyboard,
+    uint32_t format, int32_t fd, uint32_t size)
+{
+  (void)data;
+  (void)keyboard;
+  (void)format;
+  (void)fd;
+  (void)size;
+}
+
+static void keyboard_enter(void *data, struct wl_keyboard *keyboard,
+    uint32_t serial, struct wl_surface *surface, struct wl_array *keys)
+{
+  (void)data;
+  (void)keyboard;
+  (void)serial;
+  (void)surface;
+  (void)keys;
+}
+
+static void keyboard_leave(void *data, struct wl_keyboard *keyboard,
+    uint32_t serial, struct wl_surface *surface)
+{
+  (void)data;
+  (void)keyboard;
+  (void)serial;
+  (void)surface;
+}
+
+static void keyboard_key(void *data, struct wl_keyboard *keyboard,
+    uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
+{
+  (void)serial;
+  (void)time;
+  struct imv_window *window = data;
+  struct imv_event e = {
+    .type = IMV_EVENT_KEYBOARD,
+    .data = {
+      .keyboard = {
+        .scancode = key,
+        .pressed = state
+      }
+    }
+  };
+  imv_window_push_event(window, &e);
+}
+
+static void keyboard_modifiers(void *data, struct wl_keyboard *keyboard,
+    uint32_t serial, uint32_t mods_depressed, uint32_t mods_latched,
+    uint32_t mods_locked, uint32_t group)
+{
+  (void)data;
+  (void)keyboard;
+  (void)serial;
+  (void)mods_depressed;
+  (void)mods_latched;
+  (void)mods_locked;
+  (void)group;
+}
+
+void keyboard_repeat(void *data, struct wl_keyboard *keyboard,
+    int32_t rate, int32_t delay)
+{
+  (void)data;
+  (void)keyboard;
+  (void)rate;
+  (void)delay;
+}
+
+static const struct wl_keyboard_listener keyboard_listener = {
+  .keymap = keyboard_keymap,
+  .enter = keyboard_enter,
+  .leave = keyboard_leave,
+  .key = keyboard_key,
+  .modifiers = keyboard_modifiers,
+  .repeat_info = keyboard_repeat
+};
+
+static void seat_capabilities(void *data, struct wl_seat *seat, uint32_t capabilities)
+{
+  (void)seat;
+  struct imv_window *window = data;
+
+  if (capabilities & WL_SEAT_CAPABILITY_POINTER) {
+    if (!window->wl_pointer) {
+      window->wl_pointer = wl_seat_get_pointer(window->wl_seat);
+    }
+  } else {
+    if (window->wl_pointer) {
+      wl_pointer_release(window->wl_pointer);
+      window->wl_pointer = NULL;
+    }
+  }
+
+  if (capabilities & WL_SEAT_CAPABILITY_KEYBOARD) {
+    if (!window->wl_keyboard) {
+      window->wl_keyboard = wl_seat_get_keyboard(window->wl_seat);
+      wl_keyboard_add_listener(window->wl_keyboard, &keyboard_listener, window);
+    }
+  } else {
+    if (window->wl_keyboard) {
+      wl_keyboard_release(window->wl_keyboard);
+      window->wl_keyboard = NULL;
+    }
+  }
+}
+
+static void seat_name(void *data, struct wl_seat *seat, const char *name)
+{
+  (void)data;
+  (void)seat;
+  (void)name;
+}
+
+static const struct wl_seat_listener seat_listener = {
+  .capabilities = seat_capabilities,
+  .name = seat_name
+};
+
+static void on_global(void *data, struct wl_registry *registry, uint32_t id,
+    const char *interface, uint32_t version)
+{
+  struct imv_window *window = data;
+
+  if (!strcmp(interface, "wl_compositor")) {
+    window->wl_compositor = 
+      wl_registry_bind(registry, id, &wl_compositor_interface, version);
+  } else if (!strcmp(interface, "xdg_wm_base")) {
+    window->wl_xdg =
+      wl_registry_bind(registry, id, &xdg_wm_base_interface, version);
+    xdg_wm_base_add_listener(window->wl_xdg, &shell_listener_xdg, window);
+  } else if (!strcmp(interface, "wl_seat")) {
+    window->wl_seat = wl_registry_bind(registry, id, &wl_seat_interface, version);
+    wl_seat_add_listener(window->wl_seat, &seat_listener, window);
+  }
+}
+
+static void on_remove_global(void *data, struct wl_registry *registry, uint32_t id)
+{
+  (void)data;
+  (void)registry;
+  (void)id;
+}
+
+static const struct wl_registry_listener registry_listener = {
+    .global = on_global,
+    .global_remove = on_remove_global
+};
+
+static void surface_configure(void *data, struct xdg_surface *surface, uint32_t serial)
+{
+  struct imv_window *window = data;
+  xdg_surface_ack_configure(surface, serial);
+  wl_surface_commit(window->wl_surface);
+}
+
+static const struct xdg_surface_listener surface_listener = {
+  .configure = surface_configure
+};
+
+static void toplevel_configure(void *data, struct xdg_toplevel *toplevel,
+    int width, int height, struct wl_array *states)
+{
+  (void)toplevel;
+  (void)states;
+
+  struct imv_window *window = data;
+  window->width = width;
+  window->height = height;
+  wl_egl_window_resize(window->egl_window, width, height, 0, 0);
+
+  struct imv_event e = {
+    .type = IMV_EVENT_RESIZE,
+    .data = {
+      .resize = {
+        .width = width,
+        .height = height,
+        .buffer_width = width * window->scale,
+        .buffer_height = height * window->scale
+      }
+    }
+  };
+  imv_window_push_event(window, &e);
+}
+
+static void toplevel_close(void *data, struct xdg_toplevel *toplevel)
+{
+  (void)toplevel;
+
+  struct imv_window *window = data;
+  struct imv_event e = {
+    .type = IMV_EVENT_CLOSE
+  };
+  imv_window_push_event(window, &e);
+}
+
+static const struct xdg_toplevel_listener toplevel_listener = {
+  .configure = toplevel_configure,
+  .close = toplevel_close
+};
+
+static void connect_to_wayland(struct imv_window *window)
+{
+  window->wl_display = wl_display_connect(NULL);
+  assert(window->wl_display);
+
+  window->wl_registry = wl_display_get_registry(window->wl_display);
+  assert(window->wl_registry);
+
+  wl_registry_add_listener(window->wl_registry, &registry_listener, window);
+  wl_display_dispatch(window->wl_display);
+  assert(window->wl_compositor);
+  assert(window->wl_xdg);
+  assert(window->wl_seat);
+
+  window->egl_display = eglGetDisplay(window->wl_display);
+  eglInitialize(window->egl_display, NULL, NULL);
+}
+
+static void create_window(struct imv_window *window, int width, int height,
+    const char *title)
+{
+  eglBindAPI(EGL_OPENGL_API);
+  EGLint attributes[] = {
+    EGL_RED_SIZE,   8,
+    EGL_GREEN_SIZE, 8,
+    EGL_BLUE_SIZE,  8,
+    EGL_NONE
+  };
+  EGLConfig config;
+  EGLint num_config;
+  eglChooseConfig(window->egl_display, attributes, &config, 1, &num_config);
+  window->egl_context = eglCreateContext(window->egl_display, config, EGL_NO_CONTEXT, NULL);
+  assert(window->egl_context);
+
+  window->wl_surface = wl_compositor_create_surface(window->wl_compositor);
+  assert(window->wl_surface);
+
+  window->wl_xdg_surface = xdg_wm_base_get_xdg_surface(window->wl_xdg, window->wl_surface);
+  assert(window->wl_xdg_surface);
+
+  xdg_surface_add_listener(window->wl_xdg_surface, &surface_listener, window);
+
+  window->wl_xdg_toplevel = xdg_surface_get_toplevel(window->wl_xdg_surface);
+  assert(window->wl_xdg_toplevel);
+
+  xdg_toplevel_add_listener(window->wl_xdg_toplevel, &toplevel_listener, window);
+
+  wl_surface_commit(window->wl_surface);
+  wl_display_roundtrip(window->wl_display);
+
+  window->egl_window = wl_egl_window_create(window->wl_surface, width, height);
+  window->egl_surface = eglCreateWindowSurface(window->egl_display, config, window->egl_window, NULL);
+  eglMakeCurrent(window->egl_display, window->egl_surface, window->egl_surface, window->egl_context);
+
+  wl_surface_commit(window->wl_surface);
+  xdg_toplevel_set_title(window->wl_xdg_toplevel, title);
+  wl_display_roundtrip(window->wl_display);
+}
+
+static void shutdown_wayland(struct imv_window *window)
+{
+  if (window->wl_pointer) {
+    wl_pointer_destroy(window->wl_pointer);
+  }
+  if (window->wl_keyboard) {
+    wl_keyboard_destroy(window->wl_keyboard);
+  }
+  xdg_toplevel_destroy(window->wl_xdg_toplevel);
+  xdg_surface_destroy(window->wl_xdg_surface);
+  eglTerminate(window->egl_display);
+  wl_surface_destroy(window->wl_surface);
+}
+
+struct imv_window *imv_window_create(int width, int height, const char *title)
+{
+  struct imv_window *window = calloc(1, sizeof *window);
+  window->scale = 1;
+  window->events.cap = 128;
+  window->events.queue = malloc(window->events.cap * sizeof *window->events.queue);
+  pthread_mutex_init(&window->events.mutex, NULL);
+  connect_to_wayland(window);
+  create_window(window, width, height, title);
+  return window;
+}
+
+void imv_window_free(struct imv_window *window)
+{
+  pthread_mutex_destroy(&window->events.mutex);
+  shutdown_wayland(window);
+  free(window->events.queue);
+  free(window);
+}
+
+void imv_window_get_size(struct imv_window *window, int *w, int *h)
+{
+  if (w) {
+    *w = window->width;
+  }
+  if (h) {
+    *h = window->height;
+  }
+}
+
+void imv_window_get_framebuffer_size(struct imv_window *window, int *w, int *h)
+{
+  if (w) {
+    *w = window->width * window->scale;
+  }
+  if (h) {
+    *h = window->height * window->scale;
+  }
+}
+
+void imv_window_set_title(struct imv_window *window, const char *title)
+{
+  xdg_toplevel_set_title(window->wl_xdg_toplevel, title);
+}
+
+void imv_window_present(struct imv_window *window)
+{
+  eglSwapBuffers(window->egl_display, window->egl_surface);
+}
+
+void imv_window_resize(struct imv_window *window, int w, int h)
+{
+}
+
+void imv_window_wait_for_event(struct imv_window *window, double timeout)
+{
+}
+
+void imv_window_push_event(struct imv_window *window, struct imv_event *e)
+{
+  pthread_mutex_lock(&window->events.mutex);
+  if (window->events.len == window->events.cap) {
+    size_t new_cap = window->events.cap * 2;
+    struct imv_event *new_queue =
+      realloc(window->events.queue, new_cap * sizeof *window->events.queue);
+    assert(new_queue);
+    window->events.queue = new_queue;
+  }
+
+  window->events.queue[window->events.len++] = *e;
+  pthread_mutex_unlock(&window->events.mutex);
+}
+
+void imv_window_pump_events(struct imv_window *window, imv_event_handler handler, void *data)
+{
+  wl_display_dispatch_pending(window->wl_display);
+
+  pthread_mutex_lock(&window->events.mutex);
+  if (handler) {
+    for (size_t i = 0; i < window->events.len; ++i) {
+      handler(data, &window->events.queue[i]);
+    }
+  }
+  window->events.len = 0;
+  pthread_mutex_unlock(&window->events.mutex);
+}
diff --git a/src/window.h b/src/window.h
new file mode 100644
index 0000000..0973049
--- /dev/null
+++ b/src/window.h
@@ -0,0 +1,63 @@
+#ifndef IMV_WINDOW_H
+#define IMV_WINDOW_H
+
+#include <stdbool.h>
+
+struct imv_window;
+
+enum imv_event_type {
+  IMV_EVENT_CLOSE,
+  IMV_EVENT_RESIZE,
+  IMV_EVENT_KEYBOARD,
+  IMV_EVENT_MOUSE_MOTION,
+  IMV_EVENT_MOUSE_BUTTON,
+  IMV_EVENT_CUSTOM
+};
+
+struct imv_event {
+  enum imv_event_type type;
+  union {
+    struct {
+      int width;
+      int height;
+      int buffer_width;
+      int buffer_height;
+    } resize;
+    struct {
+      int scancode;
+      bool pressed;
+    } keyboard;
+    struct {
+      int x, y, dx, dy;
+    } mouse_motion;
+    struct {
+      int button;
+      bool pressed;
+    } mouse_button;
+    void *custom;
+  } data;
+};
+
+struct imv_window *imv_window_create(int w, int h, const char *title);
+
+void imv_window_free(struct imv_window *window);
+
+void imv_window_get_size(struct imv_window *window, int *w, int *h);
+
+void imv_window_get_framebuffer_size(struct imv_window *window, int *w, int *h);
+
+void imv_window_set_title(struct imv_window *window, const char *title);
+
+void imv_window_present(struct imv_window *window);
+
+void imv_window_resize(struct imv_window *window, int w, int h);
+
+void imv_window_wait_for_event(struct imv_window *window, double timeout);
+
+void imv_window_push_event(struct imv_window *window, struct imv_event *e);
+
+typedef void (*imv_event_handler)(void *data, const struct imv_event *e);
+
+void imv_window_pump_events(struct imv_window *window, imv_event_handler handler, void *data);
+
+#endif
diff --git a/src/xdg-shell-client-protocol.h b/src/xdg-shell-client-protocol.h
new file mode 100644
index 0000000..df884a6
--- /dev/null
+++ b/src/xdg-shell-client-protocol.h
@@ -0,0 +1,1839 @@
+/* Generated by wayland-scanner 1.17.0 */
+
+#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;
+
+/**
+ * @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;
+/**
+ * @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;
+/**
+ * @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.
+ *
+ * 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.
+ * @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.
+ *
+ * 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.
+ */
+extern const struct wl_interface xdg_surface_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.
+ *
+ * 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.
+ *
+ * Attaching a null buffer to a toplevel unmaps the surface.
+ */
+extern const struct wl_interface xdg_toplevel_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 x and y arguments passed when creating the popup object specify
+ * where the top left of the popup should be placed, relative to the
+ * local surface coordinates of the parent surface. See
+ * xdg_surface.get_popup. An xdg_popup must intersect with or be at least
+ * partially adjacent to its parent surface.
+ *
+ * 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 x and y arguments passed when creating the popup object specify
+ * where the top left of the popup should be placed, relative to the
+ * local surface coordinates of the parent surface. See
+ * xdg_surface.get_popup. An xdg_popup must intersect with or be at least
+ * partially adjacent to its parent surface.
+ *
+ * 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;
+
+#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.ping.
+	 *
+	 * 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((struct wl_proxy *) xdg_wm_base,
+			 XDG_WM_BASE_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) xdg_wm_base);
+}
+
+/**
+ * @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_constructor((struct wl_proxy *) xdg_wm_base,
+			 XDG_WM_BASE_CREATE_POSITIONER, &xdg_positioner_interface, 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.
+ *
+ * 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_constructor((struct wl_proxy *) xdg_wm_base,
+			 XDG_WM_BASE_GET_XDG_SURFACE, &xdg_surface_interface, 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((struct wl_proxy *) xdg_wm_base,
+			 XDG_WM_BASE_PONG, 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
+ * vertically resize the surface
+ *
+ * Resize the surface vertically so that it is completely unconstrained.
+ */
+enum xdg_positioner_constraint_adjustment {
+	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_NONE = 0,
+	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X = 1,
+	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_Y = 2,
+	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_X = 4,
+	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_Y = 8,
+	XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_RESIZE_X = 16,
+	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
+
+
+/**
+ * @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 */
+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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) xdg_positioner);
+}
+
+/**
+ * @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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_SET_SIZE, 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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_SET_ANCHOR_RECT, 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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_SET_ANCHOR, 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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_SET_GRAVITY, 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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_SET_CONSTRAINT_ADJUSTMENT, 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((struct wl_proxy *) xdg_positioner,
+			 XDG_POSITIONER_SET_OFFSET, x, y);
+}
+
+#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((struct wl_proxy *) xdg_surface,
+			 XDG_SURFACE_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) xdg_surface);
+}
+
+/**
+ * @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_constructor((struct wl_proxy *) xdg_surface,
+			 XDG_SURFACE_GET_TOPLEVEL, &xdg_toplevel_interface, 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_constructor((struct wl_proxy *) xdg_surface,
+			 XDG_SURFACE_GET_POPUP, &xdg_popup_interface, 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((struct wl_proxy *) xdg_surface,
+			 XDG_SURFACE_SET_WINDOW_GEOMETRY, 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((struct wl_proxy *) xdg_surface,
+			 XDG_SURFACE_ACK_CONFIGURE, serial);
+}
+
+#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
+ * the surface 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.
+ */
+enum xdg_toplevel_state {
+	/**
+	 * the surface is maximized
+	 */
+	XDG_TOPLEVEL_STATE_MAXIMIZED = 1,
+	/**
+	 * the surface is fullscreen
+	 */
+	XDG_TOPLEVEL_STATE_FULLSCREEN = 2,
+	/**
+	 * the surface is being resized
+	 */
+	XDG_TOPLEVEL_STATE_RESIZING = 3,
+	/**
+	 * the surface is now activated
+	 */
+	XDG_TOPLEVEL_STATE_ACTIVATED = 4,
+	/**
+	 * @since 2
+	 */
+	XDG_TOPLEVEL_STATE_TILED_LEFT = 5,
+	/**
+	 * @since 2
+	 */
+	XDG_TOPLEVEL_STATE_TILED_RIGHT = 6,
+	/**
+	 * @since 2
+	 */
+	XDG_TOPLEVEL_STATE_TILED_TOP = 7,
+	/**
+	 * @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);
+};
+
+/**
+ * @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_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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) xdg_toplevel);
+}
+
+/**
+ * @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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_PARENT, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_TITLE, 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".
+ *
+ * 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_APP_ID, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SHOW_WINDOW_MENU, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_MOVE, 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. 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_RESIZE, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_MAX_SIZE, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_MIN_SIZE, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_MAXIMIZED);
+}
+
+/**
+ * @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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_UNSET_MAXIMIZED);
+}
+
+/**
+ * @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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_FULLSCREEN, 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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_UNSET_FULLSCREEN);
+}
+
+/**
+ * @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((struct wl_proxy *) xdg_toplevel,
+			 XDG_TOPLEVEL_SET_MINIMIZED);
+}
+
+#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.
+	 * @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);
+};
+
+/**
+ * @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
+
+/**
+ * @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_DESTROY_SINCE_VERSION 1
+/**
+ * @ingroup iface_xdg_popup
+ */
+#define XDG_POPUP_GRAB_SINCE_VERSION 1
+
+/** @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((struct wl_proxy *) xdg_popup,
+			 XDG_POPUP_DESTROY);
+
+	wl_proxy_destroy((struct wl_proxy *) xdg_popup);
+}
+
+/**
+ * @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((struct wl_proxy *) xdg_popup,
+			 XDG_POPUP_GRAB, seat, serial);
+}
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/xdg-shell-protocol.c b/src/xdg-shell-protocol.c
new file mode 100644
index 0000000..db9a4be
--- /dev/null
+++ b/src/xdg-shell-protocol.c
@@ -0,0 +1,174 @@
+/* Generated by wayland-scanner 1.17.0 */
+
+/*
+ * 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"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+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 *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,
+};
+
+static const struct wl_message xdg_wm_base_requests[] = {
+	{ "destroy", "", types + 0 },
+	{ "create_positioner", "n", types + 4 },
+	{ "get_xdg_surface", "no", types + 5 },
+	{ "pong", "u", types + 0 },
+};
+
+static const struct wl_message xdg_wm_base_events[] = {
+	{ "ping", "u", types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_wm_base_interface = {
+	"xdg_wm_base", 2,
+	4, xdg_wm_base_requests,
+	1, xdg_wm_base_events,
+};
+
+static const struct wl_message xdg_positioner_requests[] = {
+	{ "destroy", "", types + 0 },
+	{ "set_size", "ii", types + 0 },
+	{ "set_anchor_rect", "iiii", types + 0 },
+	{ "set_anchor", "u", types + 0 },
+	{ "set_gravity", "u", types + 0 },
+	{ "set_constraint_adjustment", "u", types + 0 },
+	{ "set_offset", "ii", types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_positioner_interface = {
+	"xdg_positioner", 2,
+	7, xdg_positioner_requests,
+	0, NULL,
+};
+
+static const struct wl_message xdg_surface_requests[] = {
+	{ "destroy", "", types + 0 },
+	{ "get_toplevel", "n", types + 7 },
+	{ "get_popup", "n?oo", types + 8 },
+	{ "set_window_geometry", "iiii", types + 0 },
+	{ "ack_configure", "u", types + 0 },
+};
+
+static const struct wl_message xdg_surface_events[] = {
+	{ "configure", "u", types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_surface_interface = {
+	"xdg_surface", 2,
+	5, xdg_surface_requests,
+	1, xdg_surface_events,
+};
+
+static const struct wl_message xdg_toplevel_requests[] = {
+	{ "destroy", "", types + 0 },
+	{ "set_parent", "?o", types + 11 },
+	{ "set_title", "s", types + 0 },
+	{ "set_app_id", "s", types + 0 },
+	{ "show_window_menu", "ouii", types + 12 },
+	{ "move", "ou", types + 16 },
+	{ "resize", "ouu", types + 18 },
+	{ "set_max_size", "ii", types + 0 },
+	{ "set_min_size", "ii", types + 0 },
+	{ "set_maximized", "", types + 0 },
+	{ "unset_maximized", "", types + 0 },
+	{ "set_fullscreen", "?o", types + 21 },
+	{ "unset_fullscreen", "", types + 0 },
+	{ "set_minimized", "", types + 0 },
+};
+
+static const struct wl_message xdg_toplevel_events[] = {
+	{ "configure", "iia", types + 0 },
+	{ "close", "", types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_toplevel_interface = {
+	"xdg_toplevel", 2,
+	14, xdg_toplevel_requests,
+	2, xdg_toplevel_events,
+};
+
+static const struct wl_message xdg_popup_requests[] = {
+	{ "destroy", "", types + 0 },
+	{ "grab", "ou", types + 22 },
+};
+
+static const struct wl_message xdg_popup_events[] = {
+	{ "configure", "iiii", types + 0 },
+	{ "popup_done", "", types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface xdg_popup_interface = {
+	"xdg_popup", 2,
+	2, xdg_popup_requests,
+	2, xdg_popup_events,
+};
+