[gtk: 4/9] wayland: Implement inhibit_system_shortcuts API

[Matthias Clasen <matthiasc src gnome org>]

commit 36d986f33cc9bad1d44a3a7d2f6603941e87cff4
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Fri Mar 20 15:22:30 2020 +0100

    wayland: Implement inhibit_system_shortcuts API
    
    On Wayland, this is a direct mapping with the inhibit shortcut protocol
    that GDK already supports.
    
    Simply wire the new API to the existing entries.

 gdk/wayland/gdksurface-wayland.c | 75 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 74 insertions(+), 1 deletion(-)
---
diff --git a/gdk/wayland/gdksurface-wayland.c b/gdk/wayland/gdksurface-wayland.c
index 9cf2189396..6947fe0b9e 100644
--- a/gdk/wayland/gdksurface-wayland.c
+++ b/gdk/wayland/gdksurface-wayland.c
@@ -4130,7 +4130,7 @@ gdk_wayland_surface_inhibit_shortcuts (GdkSurface *surface,
   if (display->keyboard_shortcuts_inhibit == NULL)
     return;
 
-  if (gdk_wayland_surface_get_inhibitor (impl, seat))
+  if (gdk_wayland_surface_get_inhibitor (impl, gdk_seat))
     return; /* Already inhibited */
 
   inhibitor =
@@ -4359,6 +4359,9 @@ gdk_wayland_toplevel_set_property (GObject      *object,
       g_object_notify_by_pspec (G_OBJECT (surface), pspec);
       break;
 
+    case LAST_PROP + GDK_TOPLEVEL_PROP_SHORTCUTS_INHIBITED:
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -4410,6 +4413,10 @@ gdk_wayland_toplevel_get_property (GObject    *object,
       g_value_set_enum (value, surface->fullscreen_mode);
       break;
 
+    case LAST_PROP + GDK_TOPLEVEL_PROP_SHORTCUTS_INHIBITED:
+      g_value_set_boolean (value, surface->shortcuts_inhibited);
+      break;
+
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -4533,6 +4540,70 @@ gdk_wayland_toplevel_supports_edge_constraints (GdkToplevel *toplevel)
   return gdk_wayland_surface_supports_edge_constraints (GDK_SURFACE (toplevel));
 }
 
+static void
+inhibitor_active (void *data,
+                  struct zwp_keyboard_shortcuts_inhibitor_v1 *inhibitor)
+{
+  GdkToplevel *toplevel = GDK_TOPLEVEL (data);
+  GdkSurface *surface = GDK_SURFACE (toplevel);
+
+  surface->shortcuts_inhibited = TRUE;
+  g_object_notify (G_OBJECT (toplevel), "shortcuts-inhibited");
+}
+
+static void
+inhibitor_inactive (void *data,
+                    struct zwp_keyboard_shortcuts_inhibitor_v1 *inhibitor)
+{
+  GdkToplevel *toplevel = GDK_TOPLEVEL (data);
+  GdkSurface *surface = GDK_SURFACE (toplevel);
+
+  surface->shortcuts_inhibited = FALSE;
+  g_object_notify (G_OBJECT (toplevel), "shortcuts-inhibited");
+}
+
+static const struct zwp_keyboard_shortcuts_inhibitor_v1_listener
+zwp_keyboard_shortcuts_inhibitor_listener = {
+  inhibitor_active,
+  inhibitor_inactive,
+};
+
+static void
+gdk_wayland_toplevel_inhibit_system_shortcuts (GdkToplevel *toplevel,
+                                               GdkEvent    *event)
+{
+  struct zwp_keyboard_shortcuts_inhibitor_v1 *inhibitor;
+  GdkSurface *surface = GDK_SURFACE (toplevel);
+  GdkWaylandSurface *impl= GDK_WAYLAND_SURFACE (surface);
+  GdkSeat *gdk_seat;
+
+  if (surface->shortcuts_inhibited)
+    return;
+
+  gdk_seat = gdk_surface_get_seat_from_event (surface, event);
+  gdk_wayland_surface_inhibit_shortcuts (surface, gdk_seat);
+
+  inhibitor = gdk_wayland_surface_get_inhibitor (impl, gdk_seat);
+  if (!inhibitor)
+    return;
+
+  surface->current_shortcuts_inhibited_seat = gdk_seat;
+  zwp_keyboard_shortcuts_inhibitor_v1_add_listener
+    (inhibitor, &zwp_keyboard_shortcuts_inhibitor_listener, toplevel);
+}
+
+static void
+gdk_wayland_toplevel_restore_system_shortcuts (GdkToplevel *toplevel)
+{
+  GdkSurface *surface = GDK_SURFACE (toplevel);
+
+  gdk_wayland_surface_restore_shortcuts (surface,
+                                         surface->current_shortcuts_inhibited_seat);
+  surface->current_shortcuts_inhibited_seat = NULL;
+  surface->shortcuts_inhibited = FALSE;
+  g_object_notify (G_OBJECT (toplevel), "shortcuts-inhibited");
+}
+
 static void
 gdk_wayland_toplevel_iface_init (GdkToplevelInterface *iface)
 {
@@ -4542,6 +4613,8 @@ gdk_wayland_toplevel_iface_init (GdkToplevelInterface *iface)
   iface->focus = gdk_wayland_toplevel_focus;
   iface->show_window_menu = gdk_wayland_toplevel_show_window_menu;
   iface->supports_edge_constraints = gdk_wayland_toplevel_supports_edge_constraints;
+  iface->inhibit_system_shortcuts = gdk_wayland_toplevel_inhibit_system_shortcuts;
+  iface->restore_system_shortcuts = gdk_wayland_toplevel_restore_system_shortcuts;
 }
 
 typedef struct