gdkdisplay-wayland.c 43 KB
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/*
 * Copyright © 2010 Intel Corporation
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
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 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
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 */

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
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#ifdef HAVE_LINUX_MEMFD_H
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#include <linux/memfd.h>
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#endif

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#include <sys/mman.h>
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#include <sys/syscall.h>
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#include <glib.h>
#include "gdkwayland.h"
#include "gdkdisplay.h"
#include "gdkdisplay-wayland.h"
#include "gdkscreen.h"
#include "gdkinternals.h"
#include "gdkdeviceprivate.h"
#include "gdkdevicemanager.h"
#include "gdkkeysprivate.h"
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#include "gdkprivate-wayland.h"
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#include "gdkglcontext-wayland.h"
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#include "gdkwaylandmonitor.h"
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#include "pointer-gestures-unstable-v1-client-protocol.h"
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#include "tablet-unstable-v2-client-protocol.h"
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#include "xdg-shell-unstable-v6-client-protocol.h"
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#include "xdg-foreign-unstable-v1-client-protocol.h"
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#include "server-decoration-client-protocol.h"
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/**
 * SECTION:wayland_interaction
 * @Short_description: Wayland backend-specific functions
 * @Title: Wayland Interaction
 *
 * The functions in this section are specific to the GDK Wayland backend.
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 * To use them, you need to include the `<gdk/gdkwayland.h>` header and use
 * the Wayland-specific pkg-config files to build your application (either
 * `gdk-wayland-3.0` or `gtk+-wayland-3.0`).
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 *
 * To make your code compile with other GDK backends, guard backend-specific
 * calls by an ifdef as follows. Since GDK may be built with multiple
 * backends, you should also check for the backend that is in use (e.g. by
 * using the GDK_IS_WAYLAND_DISPLAY() macro).
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 * |[<!-- language="C" -->
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 * #ifdef GDK_WINDOWING_WAYLAND
 *   if (GDK_IS_WAYLAND_DISPLAY (display))
 *     {
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 *       // make Wayland-specific calls here
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 *     }
 *   else
 * #endif
 * #ifdef GDK_WINDOWING_X11
 *   if (GDK_IS_X11_DISPLAY (display))
 *     {
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 *       // make X11-specific calls here
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 *     }
 *   else
 * #endif
 *   g_error ("Unsupported GDK backend");
 * ]|
 */

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#define MIN_SYSTEM_BELL_DELAY_MS 20

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#define GTK_SHELL1_VERSION       3
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static void _gdk_wayland_display_load_cursor_theme (GdkWaylandDisplay *display_wayland);
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G_DEFINE_TYPE (GdkWaylandDisplay, gdk_wayland_display, GDK_TYPE_DISPLAY)
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static void
async_roundtrip_callback (void               *data,
                          struct wl_callback *callback,
                          uint32_t            time)
{
  GdkWaylandDisplay *display_wayland = data;

  display_wayland->async_roundtrips =
    g_list_remove (display_wayland->async_roundtrips, callback);
  wl_callback_destroy (callback);
}

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static const struct wl_callback_listener async_roundtrip_listener = {
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  async_roundtrip_callback
};

static void
_gdk_wayland_display_async_roundtrip (GdkWaylandDisplay *display_wayland)
{
  struct wl_callback *callback;

  callback = wl_display_sync (display_wayland->wl_display);
  wl_callback_add_listener (callback,
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                            &async_roundtrip_listener,
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                            display_wayland);
  display_wayland->async_roundtrips =
    g_list_append (display_wayland->async_roundtrips, callback);
}

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static void
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xdg_wm_base_ping (void               *data,
                  struct xdg_wm_base *xdg_wm_base,
                  uint32_t            serial)
{
  GdkWaylandDisplay *display_wayland = data;

  _gdk_wayland_display_update_serial (display_wayland, serial);

  GDK_NOTE (EVENTS,
            g_message ("ping, shell %p, serial %u\n", xdg_wm_base, serial));

  xdg_wm_base_pong (xdg_wm_base, serial);
}

static const struct xdg_wm_base_listener xdg_wm_base_listener = {
  xdg_wm_base_ping,
};

static void
zxdg_shell_v6_ping (void                 *data,
                    struct zxdg_shell_v6 *xdg_shell,
                    uint32_t              serial)
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{
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  GdkWaylandDisplay *display_wayland = data;
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  _gdk_wayland_display_update_serial (display_wayland, serial);
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  GDK_NOTE (EVENTS,
            g_message ("ping, shell %p, serial %u\n", xdg_shell, serial));

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  zxdg_shell_v6_pong (xdg_shell, serial);
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}

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static const struct zxdg_shell_v6_listener zxdg_shell_v6_listener = {
  zxdg_shell_v6_ping,
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};

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static gboolean
is_known_global (gpointer key, gpointer value, gpointer user_data)
{
  const char *required_global = user_data;
  const char *known_global = value;

  return g_strcmp0 (required_global, known_global) == 0;
}

static gboolean
has_required_globals (GdkWaylandDisplay *display_wayland,
                      const char *required_globals[])
{
  int i = 0;

  while (required_globals[i])
    {
      if (g_hash_table_find (display_wayland->known_globals,
                             is_known_global,
                             (gpointer)required_globals[i]) == NULL)
        return FALSE;

      i++;
    }

  return TRUE;
}

typedef struct _OnHasGlobalsClosure OnHasGlobalsClosure;

typedef void (*HasGlobalsCallback) (GdkWaylandDisplay *display_wayland,
                                    OnHasGlobalsClosure *closure);

struct _OnHasGlobalsClosure
{
  HasGlobalsCallback handler;
  const char **required_globals;
};

static void
process_on_globals_closures (GdkWaylandDisplay *display_wayland)
{
  GList *iter;

  iter = display_wayland->on_has_globals_closures;
  while (iter != NULL)
    {
      GList *next = iter->next;
      OnHasGlobalsClosure *closure = iter->data;

      if (has_required_globals (display_wayland,
                                closure->required_globals))
        {
          closure->handler (display_wayland, closure);
          g_free (closure);
          display_wayland->on_has_globals_closures =
            g_list_delete_link (display_wayland->on_has_globals_closures, iter);
        }

      iter = next;
    }
}

typedef struct
{
  OnHasGlobalsClosure base;
  uint32_t id;
  uint32_t version;
} SeatAddedClosure;

static void
_gdk_wayland_display_add_seat (GdkWaylandDisplay *display_wayland,
                               uint32_t id,
                               uint32_t version)
{
  GdkDisplay *gdk_display = GDK_DISPLAY_OBJECT (display_wayland);
  struct wl_seat *seat;

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  display_wayland->seat_version = MIN (version, 5);
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  seat = wl_registry_bind (display_wayland->wl_registry,
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                           id, &wl_seat_interface,
                           display_wayland->seat_version);
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  _gdk_wayland_device_manager_add_seat (gdk_display->device_manager,
                                        id, seat);
  _gdk_wayland_display_async_roundtrip (display_wayland);
}

static void
seat_added_closure_run (GdkWaylandDisplay *display_wayland,
                        OnHasGlobalsClosure *closure)
{
  SeatAddedClosure *seat_added_closure = (SeatAddedClosure*)closure;

  _gdk_wayland_display_add_seat (display_wayland,
                                 seat_added_closure->id,
                                 seat_added_closure->version);
}

static void
postpone_on_globals_closure (GdkWaylandDisplay *display_wayland,
                             OnHasGlobalsClosure *closure)
{
  display_wayland->on_has_globals_closures =
    g_list_append (display_wayland->on_has_globals_closures, closure);
}

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#ifdef G_ENABLE_DEBUG

static const char *
get_format_name (enum wl_shm_format format)
{
  int i;
#define FORMAT(s) { WL_SHM_FORMAT_ ## s, #s }
  struct { int format; const char *name; } formats[] = {
    FORMAT(ARGB8888),
    FORMAT(XRGB8888),
    FORMAT(C8),
    FORMAT(RGB332),
    FORMAT(BGR233),
    FORMAT(XRGB4444),
    FORMAT(XBGR4444),
    FORMAT(RGBX4444),
    FORMAT(BGRX4444),
    FORMAT(ARGB4444),
    FORMAT(ABGR4444),
    FORMAT(RGBA4444),
    FORMAT(BGRA4444),
    FORMAT(XRGB1555),
    FORMAT(XBGR1555),
    FORMAT(RGBX5551),
    FORMAT(BGRX5551),
    FORMAT(ARGB1555),
    FORMAT(ABGR1555),
    FORMAT(RGBA5551),
    FORMAT(BGRA5551),
    FORMAT(RGB565),
    FORMAT(BGR565),
    FORMAT(RGB888),
    FORMAT(BGR888),
    FORMAT(XBGR8888),
    FORMAT(RGBX8888),
    FORMAT(BGRX8888),
    FORMAT(ABGR8888),
    FORMAT(RGBA8888),
    FORMAT(BGRA8888),
    FORMAT(XRGB2101010),
    FORMAT(XBGR2101010),
    FORMAT(RGBX1010102),
    FORMAT(BGRX1010102),
    FORMAT(ARGB2101010),
    FORMAT(ABGR2101010),
    FORMAT(RGBA1010102),
    FORMAT(BGRA1010102),
    FORMAT(YUYV),
    FORMAT(YVYU),
    FORMAT(UYVY),
    FORMAT(VYUY),
    FORMAT(AYUV),
    FORMAT(NV12),
    FORMAT(NV21),
    FORMAT(NV16),
    FORMAT(NV61),
    FORMAT(YUV410),
    FORMAT(YVU410),
    FORMAT(YUV411),
    FORMAT(YVU411),
    FORMAT(YUV420),
    FORMAT(YVU420),
    FORMAT(YUV422),
    FORMAT(YVU422),
    FORMAT(YUV444),
    FORMAT(YVU444),
    { 0xffffffff, NULL }
  };
#undef FORMAT

  for (i = 0; formats[i].name; i++)
    {
      if (formats[i].format == format)
        return formats[i].name;
    }
  return NULL;
}
#endif

static void
wl_shm_format (void          *data,
               struct wl_shm *wl_shm,
               uint32_t       format)
{
  GDK_NOTE (MISC, g_message ("supported pixel format %s", get_format_name (format)));
}

static const struct wl_shm_listener wl_shm_listener = {
  wl_shm_format
};

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static void
server_decoration_manager_default_mode (void                                          *data,
                                        struct org_kde_kwin_server_decoration_manager *manager,
                                        uint32_t                                       mode)
{
  g_assert (mode <= ORG_KDE_KWIN_SERVER_DECORATION_MANAGER_MODE_SERVER);
  const char *modes[] = {
    [ORG_KDE_KWIN_SERVER_DECORATION_MANAGER_MODE_NONE]   = "none",
    [ORG_KDE_KWIN_SERVER_DECORATION_MANAGER_MODE_CLIENT] = "client",
    [ORG_KDE_KWIN_SERVER_DECORATION_MANAGER_MODE_SERVER] = "server",
  };
  GdkWaylandDisplay *display_wayland = data;
  g_debug ("Compositor prefers decoration mode '%s'", modes[mode]);
  display_wayland->server_decoration_mode = mode;
}

static const struct org_kde_kwin_server_decoration_manager_listener server_decoration_listener = {
  .default_mode = server_decoration_manager_default_mode
};

gboolean
gdk_wayland_display_prefers_ssd (GdkDisplay *display)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
  if (display_wayland->server_decoration_manager)
    return display_wayland->server_decoration_mode == ORG_KDE_KWIN_SERVER_DECORATION_MANAGER_MODE_SERVER;
  return FALSE;
}

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static void
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gdk_registry_handle_global (void               *data,
                            struct wl_registry *registry,
                            uint32_t            id,
                            const char         *interface,
                            uint32_t            version)
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{
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  GdkWaylandDisplay *display_wayland = data;
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  struct wl_output *output;
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  GDK_NOTE (MISC,
            g_message ("add global %u, interface %s, version %u", id, interface, version));

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  if (strcmp (interface, "wl_compositor") == 0)
    {
      display_wayland->compositor =
        wl_registry_bind (display_wayland->wl_registry, id, &wl_compositor_interface, MIN (version, 3));
      display_wayland->compositor_version = MIN (version, 3);
    }
  else if (strcmp (interface, "wl_shm") == 0)
    {
      display_wayland->shm =
        wl_registry_bind (display_wayland->wl_registry, id, &wl_shm_interface, 1);
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      wl_shm_add_listener (display_wayland->shm, &wl_shm_listener, display_wayland);
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    }
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  else if (strcmp (interface, "xdg_wm_base") == 0)
    {
      display_wayland->xdg_wm_base_id = id;
    }
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  else if (strcmp (interface, "zxdg_shell_v6") == 0)
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    {
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      display_wayland->zxdg_shell_v6_id = id;
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    }
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  else if (strcmp (interface, "gtk_shell1") == 0)
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    {
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      display_wayland->gtk_shell =
        wl_registry_bind(display_wayland->wl_registry, id,
                         &gtk_shell1_interface,
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                         MIN (version, GTK_SHELL1_VERSION));
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      _gdk_wayland_screen_set_has_gtk_shell (display_wayland->screen);
      display_wayland->gtk_shell_version = version;
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    }
  else if (strcmp (interface, "wl_output") == 0)
    {
      output =
        wl_registry_bind (display_wayland->wl_registry, id, &wl_output_interface, MIN (version, 2));
      _gdk_wayland_screen_add_output (display_wayland->screen, id, output, MIN (version, 2));
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      _gdk_wayland_display_async_roundtrip (display_wayland);
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    }
  else if (strcmp (interface, "wl_seat") == 0)
    {
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      static const char *required_device_manager_globals[] = {
        "wl_compositor",
        "wl_data_device_manager",
        NULL
      };

      if (has_required_globals (display_wayland,
                                required_device_manager_globals))
        _gdk_wayland_display_add_seat (display_wayland, id, version);
      else
        {
          SeatAddedClosure *closure;

          closure = g_new0 (SeatAddedClosure, 1);
          closure->base.handler = seat_added_closure_run;
          closure->base.required_globals = required_device_manager_globals;
          closure->id = id;
          closure->version = version;
          postpone_on_globals_closure (display_wayland, &closure->base);
        }
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    }
  else if (strcmp (interface, "wl_data_device_manager") == 0)
    {
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      display_wayland->data_device_manager_version = MIN (version, 3);
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      display_wayland->data_device_manager =
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        wl_registry_bind (display_wayland->wl_registry, id, &wl_data_device_manager_interface,
                          display_wayland->data_device_manager_version);
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    }
  else if (strcmp (interface, "wl_subcompositor") == 0)
    {
      display_wayland->subcompositor =
        wl_registry_bind (display_wayland->wl_registry, id, &wl_subcompositor_interface, 1);
    }
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  else if (strcmp (interface, "zwp_pointer_gestures_v1") == 0 &&
           version == GDK_ZWP_POINTER_GESTURES_V1_VERSION)
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    {
      display_wayland->pointer_gestures =
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        wl_registry_bind (display_wayland->wl_registry,
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                          id, &zwp_pointer_gestures_v1_interface, version);
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    }
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  else if (strcmp (interface, "gtk_primary_selection_device_manager") == 0)
    {
      display_wayland->primary_selection_manager =
        wl_registry_bind(display_wayland->wl_registry, id,
                         &gtk_primary_selection_device_manager_interface, 1);
    }
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  else if (strcmp (interface, "zwp_tablet_manager_v2") == 0)
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    {
      display_wayland->tablet_manager =
        wl_registry_bind(display_wayland->wl_registry, id,
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                         &zwp_tablet_manager_v2_interface, 1);
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    }
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  else if (strcmp (interface, "zxdg_exporter_v1") == 0)
    {
      display_wayland->xdg_exporter =
        wl_registry_bind (display_wayland->wl_registry, id,
                          &zxdg_exporter_v1_interface, 1);
    }
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  else if (strcmp (interface, "zxdg_importer_v1") == 0)
    {
      display_wayland->xdg_importer =
        wl_registry_bind (display_wayland->wl_registry, id,
                          &zxdg_importer_v1_interface, 1);
    }
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  else if (strcmp (interface, "zwp_keyboard_shortcuts_inhibit_manager_v1") == 0)
    {
      display_wayland->keyboard_shortcuts_inhibit =
        wl_registry_bind (display_wayland->wl_registry, id,
                          &zwp_keyboard_shortcuts_inhibit_manager_v1_interface, 1);
    }
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  else if (strcmp (interface, "org_kde_kwin_server_decoration_manager") == 0)
    {
      display_wayland->server_decoration_manager =
        wl_registry_bind (display_wayland->wl_registry, id,
                          &org_kde_kwin_server_decoration_manager_interface, 1);
      org_kde_kwin_server_decoration_manager_add_listener (display_wayland->server_decoration_manager,
                                                           &server_decoration_listener,
                                                           display_wayland);
    }
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  g_hash_table_insert (display_wayland->known_globals,
                       GUINT_TO_POINTER (id), g_strdup (interface));
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  process_on_globals_closures (display_wayland);
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}

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static void
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gdk_registry_handle_global_remove (void               *data,
                                   struct wl_registry *registry,
                                   uint32_t            id)
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{
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  GdkWaylandDisplay *display_wayland = data;
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  GdkDisplay *display = GDK_DISPLAY (display_wayland);
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  GDK_NOTE (MISC, g_message ("remove global %u", id));
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  _gdk_wayland_device_manager_remove_seat (display->device_manager, id);
  _gdk_wayland_screen_remove_output (display_wayland->screen, id);
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  g_hash_table_remove (display_wayland->known_globals, GUINT_TO_POINTER (id));

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  /* FIXME: the object needs to be destroyed here, we're leaking */
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}
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static const struct wl_registry_listener registry_listener = {
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    gdk_registry_handle_global,
    gdk_registry_handle_global_remove
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};

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static void
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log_handler (const char *format, va_list args)
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{
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  g_logv (G_LOG_DOMAIN, G_LOG_LEVEL_DEBUG, format, args);
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}

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static void
load_cursor_theme_closure_run (GdkWaylandDisplay *display_wayland,
                               OnHasGlobalsClosure *closure)
{
  _gdk_wayland_display_load_cursor_theme (display_wayland);
}

static void
_gdk_wayland_display_prepare_cursor_themes (GdkWaylandDisplay *display_wayland)
{
  OnHasGlobalsClosure *closure;
  static const char *required_cursor_theme_globals[] = {
      "wl_shm",
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      NULL
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  };

  closure = g_new0 (OnHasGlobalsClosure, 1);
  closure->handler = load_cursor_theme_closure_run;
  closure->required_globals = required_cursor_theme_globals;
  postpone_on_globals_closure (display_wayland, closure);
}

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GdkDisplay *
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_gdk_wayland_display_open (const gchar *display_name)
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{
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  struct wl_display *wl_display;
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  GdkDisplay *display;
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  GdkWaylandDisplay *display_wayland;
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  GDK_NOTE (MISC, g_message ("opening display %s", display_name ? display_name : ""));

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  /* If this variable is unset then wayland initialisation will surely
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   * fail, logging a fatal error in the process.  Save ourselves from
   * that.
   */
  if (g_getenv ("XDG_RUNTIME_DIR") == NULL)
    return NULL;

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  wl_log_set_handler_client (log_handler);
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  wl_display = wl_display_connect (display_name);
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  if (!wl_display)
    return NULL;

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  display = g_object_new (GDK_TYPE_WAYLAND_DISPLAY, NULL);
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  display->device_manager = _gdk_wayland_device_manager_new (display);
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  display_wayland = GDK_WAYLAND_DISPLAY (display);
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  display_wayland->wl_display = wl_display;
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  display_wayland->screen = _gdk_wayland_screen_new (display);
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  display_wayland->event_source = _gdk_wayland_display_event_source_new (display);
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  display_wayland->known_globals =
    g_hash_table_new_full (NULL, NULL, NULL, g_free);

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  _gdk_wayland_display_init_cursors (display_wayland);
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  _gdk_wayland_display_prepare_cursor_themes (display_wayland);
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  display_wayland->wl_registry = wl_display_get_registry (display_wayland->wl_display);
  wl_registry_add_listener (display_wayland->wl_registry, &registry_listener, display_wayland);
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  _gdk_wayland_display_async_roundtrip (display_wayland);

  /* Wait for initializing to complete. This means waiting for all
   * asynchrounous roundtrips that were triggered during initial roundtrip. */
  while (g_list_length (display_wayland->async_roundtrips) > 0)
    {
      if (wl_display_dispatch (display_wayland->wl_display) < 0)
        {
          g_object_unref (display);
          return NULL;
        }
    }
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  if (display_wayland->xdg_wm_base_id)
    {
      display_wayland->shell_variant = GDK_WAYLAND_SHELL_VARIANT_XDG_SHELL;
      display_wayland->xdg_wm_base =
        wl_registry_bind (display_wayland->wl_registry,
                          display_wayland->xdg_wm_base_id,
                          &xdg_wm_base_interface, 1);
      xdg_wm_base_add_listener (display_wayland->xdg_wm_base,
                                &xdg_wm_base_listener,
                                display_wayland);
    }
  else if (display_wayland->zxdg_shell_v6_id)
    {
      display_wayland->shell_variant = GDK_WAYLAND_SHELL_VARIANT_ZXDG_SHELL_V6;
      display_wayland->zxdg_shell_v6 =
        wl_registry_bind (display_wayland->wl_registry,
                          display_wayland->zxdg_shell_v6_id,
                          &zxdg_shell_v6_interface, 1);
      zxdg_shell_v6_add_listener (display_wayland->zxdg_shell_v6,
                                  &zxdg_shell_v6_listener,
                                  display_wayland);
    }
  else
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    {
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      g_warning ("The Wayland compositor does not provide any supported shell interface, "
                 "not using Wayland display");
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      g_object_unref (display);

      return NULL;
    }

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  display_wayland->selection = gdk_wayland_selection_new ();

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  g_signal_emit_by_name (display, "opened");

  return display;
}

static void
gdk_wayland_display_dispose (GObject *object)
{
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  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (object);
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  _gdk_screen_close (display_wayland->screen);
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  if (display_wayland->event_source)
    {
      g_source_destroy (display_wayland->event_source);
      g_source_unref (display_wayland->event_source);
      display_wayland->event_source = NULL;
    }

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  if (display_wayland->selection)
    {
      gdk_wayland_selection_free (display_wayland->selection);
      display_wayland->selection = NULL;
    }

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  g_list_free_full (display_wayland->async_roundtrips, (GDestroyNotify) wl_callback_destroy);

  if (display_wayland->known_globals)
    {
      g_hash_table_destroy (display_wayland->known_globals);
      display_wayland->known_globals = NULL;
    }
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  g_list_free_full (display_wayland->on_has_globals_closures, g_free);

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  G_OBJECT_CLASS (gdk_wayland_display_parent_class)->dispose (object);
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}

static void
gdk_wayland_display_finalize (GObject *object)
{
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  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (object);
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  guint i;
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  _gdk_wayland_display_finalize_cursors (display_wayland);

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  g_object_unref (display_wayland->screen);
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  g_free (display_wayland->startup_notification_id);
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  g_free (display_wayland->cursor_theme_name);
  xkb_context_unref (display_wayland->xkb_context);

  for (i = 0; i < GDK_WAYLAND_THEME_SCALES_COUNT; i++)
    {
      if (display_wayland->scaled_cursor_themes[i])
        {
          wl_cursor_theme_destroy (display_wayland->scaled_cursor_themes[i]);
          display_wayland->scaled_cursor_themes[i] = NULL;
        }
    }
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  g_ptr_array_free (display_wayland->monitors, TRUE);

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  G_OBJECT_CLASS (gdk_wayland_display_parent_class)->finalize (object);
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}

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static const gchar *
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gdk_wayland_display_get_name (GdkDisplay *display)
{
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  const gchar *name;

  name = g_getenv ("WAYLAND_DISPLAY");
  if (name == NULL)
    name = "wayland-0";

  return name;
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}

static GdkScreen *
gdk_wayland_display_get_default_screen (GdkDisplay *display)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

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  return GDK_WAYLAND_DISPLAY (display)->screen;
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}

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void
gdk_wayland_display_system_bell (GdkDisplay *display,
                                 GdkWindow  *window)
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{
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  GdkWaylandDisplay *display_wayland;
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  struct gtk_surface1 *gtk_surface;
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  gint64 now_ms;
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  g_return_if_fail (GDK_IS_DISPLAY (display));
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  display_wayland = GDK_WAYLAND_DISPLAY (display);

  if (!display_wayland->gtk_shell)
    return;

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  if (window)
    gtk_surface = gdk_wayland_window_get_gtk_surface (window);
  else
    gtk_surface = NULL;

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  now_ms = g_get_monotonic_time () / 1000;
  if (now_ms - display_wayland->last_bell_time_ms < MIN_SYSTEM_BELL_DELAY_MS)
    return;

  display_wayland->last_bell_time_ms = now_ms;

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  gtk_shell1_system_bell (display_wayland->gtk_shell, gtk_surface);
}

static void
gdk_wayland_display_beep (GdkDisplay *display)
{
  gdk_wayland_display_system_bell (display, NULL);
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}

static void
gdk_wayland_display_sync (GdkDisplay *display)
{
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  GdkWaylandDisplay *display_wayland;
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  g_return_if_fail (GDK_IS_DISPLAY (display));

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  display_wayland = GDK_WAYLAND_DISPLAY (display);
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  wl_display_roundtrip (display_wayland->wl_display);
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}

static void
gdk_wayland_display_flush (GdkDisplay *display)
{
  g_return_if_fail (GDK_IS_DISPLAY (display));

  if (!display->closed)
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    wl_display_flush (GDK_WAYLAND_DISPLAY (display)->wl_display);
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}

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static void
gdk_wayland_display_make_default (GdkDisplay *display)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
  const gchar *startup_id;

  g_free (display_wayland->startup_notification_id);
  display_wayland->startup_notification_id = NULL;

  startup_id = g_getenv ("DESKTOP_STARTUP_ID");
  if (startup_id && *startup_id != '\0')
    {
      if (!g_utf8_validate (startup_id, -1, NULL))
        g_warning ("DESKTOP_STARTUP_ID contains invalid UTF-8");
      else
        display_wayland->startup_notification_id = g_strdup (startup_id);

      /* Clear the environment variable so it won't be inherited by
       * child processes and confuse things.
       */
      g_unsetenv ("DESKTOP_STARTUP_ID");
    }
}

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static gboolean
gdk_wayland_display_has_pending (GdkDisplay *display)
{
  return FALSE;
}

static GdkWindow *
gdk_wayland_display_get_default_group (GdkDisplay *display)
{
  g_return_val_if_fail (GDK_IS_DISPLAY (display), NULL);

  return NULL;
}


static gboolean
gdk_wayland_display_supports_selection_notification (GdkDisplay *display)
{
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  return FALSE;
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}

static gboolean
gdk_wayland_display_request_selection_notification (GdkDisplay *display,
						    GdkAtom     selection)

{
    return FALSE;
}

static gboolean
gdk_wayland_display_supports_clipboard_persistence (GdkDisplay *display)
{
  return FALSE;
}

static void
gdk_wayland_display_store_clipboard (GdkDisplay    *display,
				     GdkWindow     *clipboard_window,
				     guint32        time_,
				     const GdkAtom *targets,
				     gint           n_targets)
{
}

static gboolean
gdk_wayland_display_supports_shapes (GdkDisplay *display)
{
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  return FALSE;
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}

static gboolean
gdk_wayland_display_supports_input_shapes (GdkDisplay *display)
{
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  return TRUE;
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}

static gboolean
gdk_wayland_display_supports_composite (GdkDisplay *display)
{
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  return FALSE;
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}

static void
gdk_wayland_display_before_process_all_updates (GdkDisplay *display)
{
}

static void
gdk_wayland_display_after_process_all_updates (GdkDisplay *display)
{
  /* Post the damage here instead? */
}

static gulong
gdk_wayland_display_get_next_serial (GdkDisplay *display)
{
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  static gulong serial = 0;
  return ++serial;
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}

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/**
 * gdk_wayland_display_set_startup_notification_id:
 * @display: (type GdkWaylandDisplay): a #GdkDisplay
 * @startup_id: the startup notification ID (must be valid utf8)
 *
 * Sets the startup notification ID for a display.
 *
 * This is usually taken from the value of the DESKTOP_STARTUP_ID
 * environment variable, but in some cases (such as the application not
 * being launched using exec()) it can come from other sources.
 *
 * The startup ID is also what is used to signal that the startup is
 * complete (for example, when opening a window or when calling
 * gdk_notify_startup_complete()).
 *
 * Since: 3.22
 **/
void
gdk_wayland_display_set_startup_notification_id (GdkDisplay *display,
                                                 const char *startup_id)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);

  g_free (display_wayland->startup_notification_id);
  display_wayland->startup_notification_id = g_strdup (startup_id);
}

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static void
gdk_wayland_display_notify_startup_complete (GdkDisplay  *display,
					     const gchar *startup_id)
{
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  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
  gchar *free_this = NULL;

  if (startup_id == NULL)
    {
      startup_id = free_this = display_wayland->startup_notification_id;
      display_wayland->startup_notification_id = NULL;

      if (startup_id == NULL)
        return;
    }

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  if (display_wayland->gtk_shell)
    gtk_shell1_set_startup_id (display_wayland->gtk_shell, startup_id);
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  g_free (free_this);
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}

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static GdkKeymap *
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_gdk_wayland_display_get_keymap (GdkDisplay *display)
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{
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  GdkDevice *core_keyboard = NULL;
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  static GdkKeymap *tmp_keymap = NULL;
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  core_keyboard = gdk_seat_get_keyboard (gdk_display_get_default_seat (display));
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  if (core_keyboard && tmp_keymap)
    {
      g_object_unref (tmp_keymap);
      tmp_keymap = NULL;
    }

  if (core_keyboard)
    return _gdk_wayland_device_get_keymap (core_keyboard);

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  if (!tmp_keymap)
    tmp_keymap = _gdk_wayland_keymap_new ();
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  return tmp_keymap;
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}

static void
gdk_wayland_display_push_error_trap (GdkDisplay *display)
{
}

static gint
gdk_wayland_display_pop_error_trap (GdkDisplay *display,
				    gboolean    ignored)
{
  return 0;
}

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static int
gdk_wayland_display_get_n_monitors (GdkDisplay *display)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);

  return display_wayland->monitors->len;
}

static GdkMonitor *
gdk_wayland_display_get_monitor (GdkDisplay *display,
                                 int         monitor_num)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);

  if (monitor_num < 0 || monitor_num >= display_wayland->monitors->len)
    return NULL;

  return (GdkMonitor *)display_wayland->monitors->pdata[monitor_num];
}

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static GdkMonitor *
gdk_wayland_display_get_monitor_at_window (GdkDisplay *display,
                                           GdkWindow  *window)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
  struct wl_output *output;
  int i;

  g_return_val_if_fail (GDK_IS_WAYLAND_WINDOW (window), NULL);

  output = gdk_wayland_window_get_wl_output (window);
  if (output == NULL)
    return NULL;

  for (i = 0; i < display_wayland->monitors->len; i++)
    {
      GdkMonitor *monitor = display_wayland->monitors->pdata[i];

      if (gdk_wayland_monitor_get_wl_output (monitor) == output)
        return monitor;
    }

  return NULL;
}

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static void
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gdk_wayland_display_class_init (GdkWaylandDisplayClass *class)
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{
  GObjectClass *object_class = G_OBJECT_CLASS (class);
  GdkDisplayClass *display_class = GDK_DISPLAY_CLASS (class);

  object_class->dispose = gdk_wayland_display_dispose;
  object_class->finalize = gdk_wayland_display_finalize;

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  display_class->window_type = gdk_wayland_window_get_type ();
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  display_class->get_name = gdk_wayland_display_get_name;
  display_class->get_default_screen = gdk_wayland_display_get_default_screen;
  display_class->beep = gdk_wayland_display_beep;
  display_class->sync = gdk_wayland_display_sync;
  display_class->flush = gdk_wayland_display_flush;
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  display_class->make_default = gdk_wayland_display_make_default;
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  display_class->has_pending = gdk_wayland_display_has_pending;
  display_class->queue_events = _gdk_wayland_display_queue_events;
  display_class->get_default_group = gdk_wayland_display_get_default_group;
  display_class->supports_selection_notification = gdk_wayland_display_supports_selection_notification;
  display_class->request_selection_notification = gdk_wayland_display_request_selection_notification;
  display_class->supports_clipboard_persistence = gdk_wayland_display_supports_clipboard_persistence;
  display_class->store_clipboard = gdk_wayland_display_store_clipboard;
  display_class->supports_shapes = gdk_wayland_display_supports_shapes;
  display_class->supports_input_shapes = gdk_wayland_display_supports_input_shapes;
  display_class->supports_composite = gdk_wayland_display_supports_composite;
  display_class->get_app_launch_context = _gdk_wayland_display_get_app_launch_context;
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  display_class->get_default_cursor_size = _gdk_wayland_display_get_default_cursor_size;
  display_class->get_maximal_cursor_size = _gdk_wayland_display_get_maximal_cursor_size;
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  display_class->get_cursor_for_type = _gdk_wayland_display_get_cursor_for_type;
  display_class->get_cursor_for_name = _gdk_wayland_display_get_cursor_for_name;
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  display_class->get_cursor_for_surface = _gdk_wayland_display_get_cursor_for_surface;
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  display_class->supports_cursor_alpha = _gdk_wayland_display_supports_cursor_alpha;
  display_class->supports_cursor_color = _gdk_wayland_display_supports_cursor_color;
  display_class->before_process_all_updates = gdk_wayland_display_before_process_all_updates;
  display_class->after_process_all_updates = gdk_wayland_display_after_process_all_updates;
  display_class->get_next_serial = gdk_wayland_display_get_next_serial;
  display_class->notify_startup_complete = gdk_wayland_display_notify_startup_complete;
  display_class->create_window_impl = _gdk_wayland_display_create_window_impl;
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  display_class->get_keymap = _gdk_wayland_display_get_keymap;
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  display_class->push_error_trap = gdk_wayland_display_push_error_trap;
  display_class->pop_error_trap = gdk_wayland_display_pop_error_trap;
  display_class->get_selection_owner = _gdk_wayland_display_get_selection_owner;
  display_class->set_selection_owner = _gdk_wayland_display_set_selection_owner;
  display_class->send_selection_notify = _gdk_wayland_display_send_selection_notify;
  display_class->get_selection_property = _gdk_wayland_display_get_selection_property;
  display_class->convert_selection = _gdk_wayland_display_convert_selection;
  display_class->text_property_to_utf8_list = _gdk_wayland_display_text_property_to_utf8_list;
  display_class->utf8_to_string_target = _gdk_wayland_display_utf8_to_string_target;
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  display_class->make_gl_context_current = gdk_wayland_display_make_gl_context_current;
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  display_class->get_n_monitors = gdk_wayland_display_get_n_monitors;
  display_class->get_monitor = gdk_wayland_display_get_monitor;
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  display_class->get_monitor_at_window = gdk_wayland_display_get_monitor_at_window;
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}

static void
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gdk_wayland_display_init (GdkWaylandDisplay *display)
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{
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  display->xkb_context = xkb_context_new (0);
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  display->monitors = g_ptr_array_new_with_free_func (g_object_unref);
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}
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void
gdk_wayland_display_set_cursor_theme (GdkDisplay  *display,
                                      const gchar *name,
                                      gint         size)
{
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  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY(display);
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  struct wl_cursor_theme *theme;
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  int i;
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  g_assert (display_wayland);
  g_assert (display_wayland->shm);
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  if (g_strcmp0 (name, display_wayland->cursor_theme_name) == 0 &&
      display_wayland->cursor_theme_size == size)
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    return;

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  theme = wl_cursor_theme_load (name, size, display_wayland->shm);
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  if (theme == NULL)
    {
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      g_warning ("Failed to load cursor theme %s", name);
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      return;
    }

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  for (i = 0; i < GDK_WAYLAND_THEME_SCALES_COUNT; i++)
    {
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      if (display_wayland->scaled_cursor_themes[i])
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        {
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          wl_cursor_theme_destroy (display_wayland->scaled_cursor_themes[i]);
          display_wayland->scaled_cursor_themes[i] = NULL;
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        }
    }
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  display_wayland->scaled_cursor_themes[0] = theme;
  if (display_wayland->cursor_theme_name != NULL)
    g_free (display_wayland->cursor_theme_name);
  display_wayland->cursor_theme_name = g_strdup (name);
  display_wayland->cursor_theme_size = size;
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  _gdk_wayland_display_update_cursors (display_wayland);
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}

struct wl_cursor_theme *
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_gdk_wayland_display_get_scaled_cursor_theme (GdkWaylandDisplay *display_wayland,
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                                              guint              scale)
{
  struct wl_cursor_theme *theme;

1143
  g_assert (display_wayland->cursor_theme_name);
1144 1145 1146
  g_assert (scale <= GDK_WAYLAND_MAX_THEME_SCALE);
  g_assert (scale >= 1);

1147
  theme = display_wayland->scaled_cursor_themes[scale - 1];
1148 1149
  if (!theme)
    {
1150 1151 1152
      theme = wl_cursor_theme_load (display_wayland->cursor_theme_name,
                                    display_wayland->cursor_theme_size * scale,
                                    display_wayland->shm);
1153 1154
      if (theme == NULL)
        {
1155
          g_warning ("Failed to load cursor theme %s with scale %u",
1156
                     display_wayland->cursor_theme_name, scale);
1157 1158
          return NULL;
        }
1159
      display_wayland->scaled_cursor_themes[scale - 1] = theme;
1160
    }
1161

1162
  return theme;
1163 1164
}

1165
static void
1166
_gdk_wayland_display_load_cursor_theme (GdkWaylandDisplay *display_wayland)
1167
{
1168
  guint size;
1169
  const gchar *name;
1170
  GValue v = G_VALUE_INIT;
1171

1172 1173
  g_assert (display_wayland);
  g_assert (display_wayland->shm);
1174

1175
  g_value_init (&v, G_TYPE_INT);
1176
  if (gdk_screen_get_setting (display_wayland->screen, "gtk-cursor-theme-size", &v))
1177 1178 1179 1180 1181
    size = g_value_get_int (&v);
  else
    size = 32;
  g_value_unset (&v);

1182
  g_value_init (&v, G_TYPE_STRING);
1183
  if (gdk_screen_get_setting (display_wayland->screen, "gtk-cursor-theme-name", &v))
1184
    name = g_value_get_string (&v);
1185
  else
1186
    name = "default";
1187

1188
  gdk_wayland_display_set_cursor_theme (GDK_DISPLAY (display_wayland), name, size);
1189
  g_value_unset (&v);
1190
}
1191 1192

guint32
1193
_gdk_wayland_display_get_serial (GdkWaylandDisplay *display_wayland)
1194
{
1195
  return display_wayland->serial;
1196 1197 1198
}

void
1199
_gdk_wayland_display_update_serial (GdkWaylandDisplay *display_wayland,
1200 1201
                                    guint32            serial)
{
1202
  display_wayland->serial = serial;
1203
}
1204 1205

/**
1206
 * gdk_wayland_display_get_wl_display:
1207 1208
 * @display: (type GdkWaylandDisplay): a #GdkDisplay
 *
1209
 * Returns the Wayland wl_display of a #GdkDisplay.
1210 1211 1212 1213 1214 1215
 *
 * Returns: (transfer none): a Wayland wl_display
 *
 * Since: 3.8
 */
struct wl_display *
1216
gdk_wayland_display_get_wl_display (GdkDisplay *display)
1217
{
1218
  g_return_val_if_fail (GDK_IS_WAYLAND_DISPLAY (display), NULL);
1219

1220
  return GDK_WAYLAND_DISPLAY (display)->wl_display;
1221 1222 1223
}

/**
1224
 * gdk_wayland_display_get_wl_compositor:
1225 1226
 * @display: (type GdkWaylandDisplay): a #GdkDisplay
 *
1227
 * Returns the Wayland global singleton compositor of a #GdkDisplay.
1228 1229 1230 1231 1232 1233 1234 1235
 *
 * Returns: (transfer none): a Wayland wl_compositor
 *
 * Since: 3.8
 */
struct wl_compositor *
gdk_wayland_display_get_wl_compositor (GdkDisplay *display)
{
1236
  g_return_val_if_fail (GDK_IS_WAYLAND_DISPLAY (display), NULL);
1237

1238
  return GDK_WAYLAND_DISPLAY (display)->compositor;
1239 1240
}

1241
static const cairo_user_data_key_t gdk_wayland_shm_surface_cairo_key;
1242 1243 1244 1245 1246 1247 1248 1249 1250 1251

typedef struct _GdkWaylandCairoSurfaceData {
  gpointer buf;
  size_t buf_length;
  struct wl_shm_pool *pool;
  struct wl_buffer *buffer;
  GdkWaylandDisplay *display;
  uint32_t scale;
} GdkWaylandCairoSurfaceData;

1252 1253 1254
static int
open_shared_memory (void)
{
1255 1256 1257 1258 1259 1260
  static gboolean force_shm_open = FALSE;
  int ret = -1;

#if !defined (__NR_memfd_create)
  force_shm_open = TRUE;
#endif
1261 1262 1263

  do
    {
1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278
#if defined (__NR_memfd_create)
      if (!force_shm_open)
        {
          ret = syscall (__NR_memfd_create, "gdk-wayland", MFD_CLOEXEC);

          /* fall back to shm_open until debian stops shipping 3.16 kernel
           * See bug 766341
           */
          if (ret < 0 && errno == ENOSYS)
            force_shm_open = TRUE;
        }
#endif

      if (force_shm_open)
        {
1279 1280 1281
#if defined (__FreeBSD__)
          ret = shm_open (SHM_ANON, O_CREAT | O_EXCL | O_RDWR | O_CLOEXEC, 0600);
#else
1282 1283 1284 1285 1286 1287 1288 1289 1290 1291
          char name[NAME_MAX - 1] = "";

          sprintf (name, "/gdk-wayland-%x", g_random_int ());

          ret = shm_open (name, O_CREAT | O_EXCL | O_RDWR | O_CLOEXEC, 0600);

          if (ret >= 0)
            shm_unlink (name);
          else if (errno == EEXIST)
            continue;
1292
#endif
1293
        }
1294 1295 1296 1297
    }
  while (ret < 0 && errno == EINTR);

  if (ret < 0)
1298 1299
    g_critical (G_STRLOC ": creating shared memory file (using %s) failed: %m",
                force_shm_open? "shm_open" : "memfd_create");
1300 1301 1302 1303

  return ret;
}

1304
static struct wl_shm_pool *
1305
create_shm_pool (struct wl_shm  *shm,
1306
                 int             size,
1307 1308 1309 1310
                 size_t         *buf_length,
                 void          **data_out)
{
  struct wl_shm_pool *pool;
1311
  int fd;
1312 1313
  void *data;

1314
  fd = open_shared_memory ();
1315

1316 1317
  if (fd < 0)
    return NULL;
1318 1319 1320

  if (ftruncate (fd, size) < 0)
    {
1321
      g_critical (G_STRLOC ": Truncating shared memory file failed: %m");
1322 1323 1324 1325 1326 1327 1328 1329
      close (fd);
      return NULL;
    }

  data = mmap (NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);

  if (data == MAP_FAILED)
    {
1330
      g_critical (G_STRLOC ": mmap'ping shared memory file failed: %m");
1331 1332 1333 1334
      close (fd);
      return NULL;
    }

1335
  pool = wl_shm_create_pool (shm, fd, size);
1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375

  close (fd);

  *data_out = data;
  *buf_length = size;

  return pool;
}

static void
gdk_wayland_cairo_surface_destroy (void *p)
{
  GdkWaylandCairoSurfaceData *data = p;

  if (data->buffer)
    wl_buffer_destroy (data->buffer);

  if (data->pool)
    wl_shm_pool_destroy (data->pool);

  munmap (data->buf, data->buf_length);
  g_free (data);
}

cairo_surface_t *
_gdk_wayland_display_create_shm_surface (GdkWaylandDisplay *display,
                                         int                width,
                                         int                height,
                                         guint              scale)
{
  GdkWaylandCairoSurfaceData *data;
  cairo_surface_t *surface = NULL;
  cairo_status_t status;
  int stride;

  data = g_new (GdkWaylandCairoSurfaceData, 1);
  data->display = display;
  data->buffer = NULL;
  data->scale = scale;

1376
  stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, width*scale);
1377 1378

  data->pool = create_shm_pool (display->shm,
1379
                                height*scale*stride,
1380 1381 1382 1383 1384 1385 1386
                                &data->buf_length,
                                &data->buf);

  surface = cairo_image_surface_create_for_data (data->buf,
                                                 CAIRO_FORMAT_ARGB32,
                                                 width*scale,
                                                 height*scale,
1387
                                                 stride);
1388 1389 1390

  data->buffer = wl_shm_pool_create_buffer (data->pool, 0,
                                            width*scale, height*scale,
1391
                                            stride, WL_SHM_FORMAT_ARGB8888);
1392

1393
  cairo_surface_set_user_data (surface, &gdk_wayland_shm_surface_cairo_key,
1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410
                               data, gdk_wayland_cairo_surface_destroy);

  cairo_surface_set_device_scale (surface, scale, scale);

  status = cairo_surface_status (surface);
  if (status != CAIRO_STATUS_SUCCESS)
    {
      g_critical (G_STRLOC ": Unable to create Cairo image surface: %s",
                  cairo_status_to_string (status));
    }

  return surface;
}

struct wl_buffer *
_gdk_wayland_shm_surface_get_wl_buffer (cairo_surface_t *surface)
{
1411
  GdkWaylandCairoSurfaceData *data = cairo_surface_get_user_data (surface, &gdk_wayland_shm_surface_cairo_key);
1412 1413 1414
  return data->buffer;
}

1415 1416 1417
gboolean
_gdk_wayland_is_shm_surface (cairo_surface_t *surface)
{
1418
  return cairo_surface_get_user_data (surface, &gdk_wayland_shm_surface_cairo_key) != NULL;
1419 1420
}

1421 1422 1423
GdkWaylandSelection *
gdk_wayland_display_get_selection (GdkDisplay *display)
{
1424
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
1425

1426
  return display_wayland->selection;
1427
}
1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461

/**
 * gdk_wayland_display_query_registry:
 * @display: a wayland #GdkDisplay
 * @interface: global interface to query in the registry
 *
 * Returns %TRUE if the the interface was found in the display
 * wl_registry.global handler.
 *
 * Returns: %TRUE if the global is offered by the compositor
 *
 * Since: 3.22.27
 **/
gboolean
gdk_wayland_display_query_registry (GdkDisplay  *display,
				    const gchar *global)
{
  GdkWaylandDisplay *display_wayland = GDK_WAYLAND_DISPLAY (display);
  GHashTableIter iter;
  gchar *value;

  g_return_val_if_fail (GDK_IS_WAYLAND_DISPLAY (display), FALSE);
  g_return_val_if_fail (global != NULL, FALSE);

  g_hash_table_iter_init (&iter, display_wayland->known_globals);

  while (g_hash_table_iter_next (&iter, NULL, (gpointer*) &value))
    {
      if (strcmp (value, global) == 0)
        return TRUE;
    }

  return FALSE;
}