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wayland/xdg-shell: Add support for explicit popup repositioning
This commit completes the implementation of `xdg_wm_base` version 3, which introduces support for synchronized implicit and explicit popup repositioning. Explicit repositioning works by the client providing a new `xdg_positioner` object via a new request `xdg_popup.reposition`. If the repositioning is done in combination with the parent itself being reconfigured, the to be committed state of the parent is provided by the client via the `xdg_positioner` object, using `xdg_positioner.set__parent_configure`. https://gitlab.gnome.org/GNOME/mutter/merge_requests/705
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@ -37,7 +37,7 @@
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/* Global/master objects (version exported by wl_registry and negotiated through bind) */
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#define META_WL_COMPOSITOR_VERSION 4
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#define META_WL_DATA_DEVICE_MANAGER_VERSION 3
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#define META_XDG_WM_BASE_VERSION 2
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#define META_XDG_WM_BASE_VERSION 3
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#define META_ZXDG_SHELL_V6_VERSION 1
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#define META_WL_SHELL_VERSION 1
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#define META_WL_SEAT_VERSION 5
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@ -68,6 +68,13 @@ typedef struct _MetaWaylandXdgPositioner
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int32_t offset_y;
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gboolean is_reactive;
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gboolean has_parent_size;
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int32_t parent_width;
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int32_t parent_height;
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gboolean acked_parent_configure;
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uint32_t parent_configure_serial;
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} MetaWaylandXdgPositioner;
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typedef struct _MetaWaylandXdgSurfaceConstructor
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@ -112,6 +119,9 @@ struct _MetaWaylandXdgPopup
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MetaWaylandSurface *parent_surface;
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gulong parent_surface_unmapped_handler_id;
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uint32_t pending_reposition_token;
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gboolean pending_repositioned;
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MetaWaylandPopup *popup;
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gboolean dismissed_by_client;
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@ -153,6 +163,10 @@ static void
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meta_wayland_xdg_surface_send_configure (MetaWaylandXdgSurface *xdg_surface,
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MetaWaylandWindowConfiguration *configuration);
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static void
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scale_placement_rule (MetaPlacementRule *placement_rule,
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MetaWaylandSurface *surface);
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static MetaWaylandSurface *
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surface_from_xdg_surface_resource (struct wl_resource *resource)
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{
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@ -566,9 +580,45 @@ xdg_popup_grab (struct wl_client *client,
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xdg_popup->setup.grab_serial = serial;
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}
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static void
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xdg_popup_reposition (struct wl_client *client,
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struct wl_resource *resource,
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struct wl_resource *positioner_resource,
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uint32_t token)
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{
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MetaWaylandXdgPopup *xdg_popup =
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META_WAYLAND_XDG_POPUP (wl_resource_get_user_data (resource));
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MetaWaylandSurfaceRole *surface_role =
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META_WAYLAND_SURFACE_ROLE (xdg_popup);
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MetaWaylandSurface *surface =
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meta_wayland_surface_role_get_surface (surface_role);
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MetaWindow *window;
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MetaWindow *parent_window;
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MetaWaylandXdgPositioner *xdg_positioner;
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MetaPlacementRule placement_rule;
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window = meta_wayland_surface_get_window (surface);
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if (!window)
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return;
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parent_window = meta_wayland_surface_get_window (xdg_popup->parent_surface);
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xdg_positioner = wl_resource_get_user_data (positioner_resource);
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placement_rule = meta_wayland_xdg_positioner_to_placement (xdg_positioner,
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parent_window);
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xdg_popup->pending_reposition_token = token;
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xdg_popup->pending_repositioned = TRUE;
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scale_placement_rule (&placement_rule, surface);
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meta_window_update_placement_rule (window, &placement_rule);
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}
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static const struct xdg_popup_interface meta_wayland_xdg_popup_interface = {
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xdg_popup_destroy,
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xdg_popup_grab,
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xdg_popup_reposition,
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};
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static void
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@ -1150,6 +1200,12 @@ meta_wayland_xdg_popup_configure (MetaWaylandShellSurface *shell_surface,
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geometry_scale = meta_window_wayland_get_geometry_scale (parent_window);
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x = configuration->rel_x / geometry_scale;
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y = configuration->rel_y / geometry_scale;
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if (xdg_popup->pending_repositioned)
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{
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xdg_popup_send_repositioned (xdg_popup->resource,
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xdg_popup->pending_reposition_token);
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xdg_popup->pending_repositioned = FALSE;
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}
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xdg_popup_send_configure (xdg_popup->resource,
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x, y,
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configuration->width, configuration->height);
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@ -1905,6 +1961,50 @@ meta_wayland_xdg_positioner_to_placement (MetaWaylandXdgPositioner *xdg_position
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meta_window_get_frame_rect (parent_window, &parent_rect);
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if (xdg_positioner->acked_parent_configure)
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{
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MetaWindowWayland *parent_wl_window = META_WINDOW_WAYLAND (parent_window);
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uint32_t serial;
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MetaWaylandWindowConfiguration *configuration;
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serial = xdg_positioner->parent_configure_serial;
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configuration = meta_window_wayland_peek_configuration (parent_wl_window,
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serial);
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if (configuration)
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{
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if (configuration->flags & META_MOVE_RESIZE_STATE_CHANGED)
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{
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if (configuration->has_position)
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{
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parent_rect.x = configuration->x;
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parent_rect.y = configuration->y;
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}
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if (configuration->has_size)
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{
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parent_rect.width = configuration->width;
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parent_rect.height = configuration->height;
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}
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}
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else if (xdg_positioner->has_parent_size)
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{
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meta_rectangle_resize_with_gravity (&parent_rect,
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&parent_rect,
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configuration->gravity,
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xdg_positioner->parent_width,
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xdg_positioner->parent_height);
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}
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}
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}
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else if (xdg_positioner->has_parent_size)
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{
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meta_rectangle_resize_with_gravity (&parent_rect,
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&parent_rect,
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META_GRAVITY_SOUTH_EAST,
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xdg_positioner->parent_width,
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xdg_positioner->parent_height);
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}
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return (MetaPlacementRule) {
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.anchor_rect = xdg_positioner->anchor_rect,
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.gravity = positioner_gravity_to_placement_gravity (xdg_positioner->gravity),
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@ -2050,6 +2150,30 @@ xdg_positioner_set_reactive (struct wl_client *client,
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positioner->is_reactive = TRUE;
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}
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static void
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xdg_positioner_set_parent_size (struct wl_client *client,
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struct wl_resource *resource,
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int32_t parent_width,
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int32_t parent_height)
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{
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MetaWaylandXdgPositioner *positioner = wl_resource_get_user_data (resource);
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positioner->has_parent_size = TRUE;
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positioner->parent_width = parent_width;
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positioner->parent_height = parent_height;
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}
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static void
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xdg_positioner_set_parent_configure (struct wl_client *client,
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struct wl_resource *resource,
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uint32_t serial)
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{
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MetaWaylandXdgPositioner *positioner = wl_resource_get_user_data (resource);
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positioner->acked_parent_configure = TRUE;
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positioner->parent_configure_serial = serial;
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}
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static const struct xdg_positioner_interface meta_wayland_xdg_positioner_interface = {
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xdg_positioner_destroy,
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xdg_positioner_set_size,
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@ -2059,6 +2183,8 @@ static const struct xdg_positioner_interface meta_wayland_xdg_positioner_interfa
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xdg_positioner_set_constraint_adjustment,
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xdg_positioner_set_offset,
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xdg_positioner_set_reactive,
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xdg_positioner_set_parent_size,
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xdg_positioner_set_parent_configure,
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};
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static void
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@ -800,6 +800,23 @@ meta_window_wayland_new (MetaDisplay *display,
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return window;
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}
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MetaWaylandWindowConfiguration *
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meta_window_wayland_peek_configuration (MetaWindowWayland *wl_window,
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uint32_t serial)
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{
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GList *l;
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for (l = wl_window->pending_configurations; l; l = l->next)
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{
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MetaWaylandWindowConfiguration *configuration = l->data;
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if (configuration->serial == serial)
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return configuration;
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}
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return NULL;
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}
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static MetaWaylandWindowConfiguration *
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acquire_acked_configuration (MetaWindowWayland *wl_window,
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MetaWaylandSurfaceState *pending)
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@ -56,6 +56,10 @@ void meta_window_place_with_placement_rule (MetaWindow *window,
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void meta_window_update_placement_rule (MetaWindow *window,
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MetaPlacementRule *placement_rule);
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MetaWaylandWindowConfiguration *
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meta_window_wayland_peek_configuration (MetaWindowWayland *wl_window,
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uint32_t serial);
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void meta_window_wayland_set_min_size (MetaWindow *window,
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int width,
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int height);
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