[mutter] wayland: add keyboard shortcuts inhibitor protocol

[Olivier Fourdan <ofourdan src gnome org>]

commit 2ca087172451380d63dbd47e6980f93aa68be12f
Author: Olivier Fourdan <ofourdan redhat com>
Date:   Tue Mar 21 11:47:16 2017 +0100

    wayland: add keyboard shortcuts inhibitor protocol
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783342

 src/Makefile.am                              |    8 +
 src/wayland/meta-wayland-inhibit-shortcuts.c |  184 ++++++++++++++++++++++++++
 src/wayland/meta-wayland-inhibit-shortcuts.h |   38 ++++++
 src/wayland/meta-wayland-versions.h          |    1 +
 src/wayland/meta-wayland.c                   |    2 +
 5 files changed, 233 insertions(+), 0 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 10c288d..736fff1 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -73,6 +73,8 @@ mutter_built_sources += \
        xdg-foreign-unstable-v1-server-protocol.h                       \
        linux-dmabuf-unstable-v1-protocol.c                                     \
        linux-dmabuf-unstable-v1-server-protocol.h                              \
+       keyboard-shortcuts-inhibit-unstable-v1-protocol.c               \
+       keyboard-shortcuts-inhibit-unstable-v1-server-protocol.h        \
        $(NULL)
 endif
 
@@ -388,6 +390,8 @@ libmutter_@LIBMUTTER_API_VERSION@_la_SOURCES +=     \
        wayland/meta-wayland-wl-shell.h         \
        wayland/meta-wayland-gtk-shell.c        \
        wayland/meta-wayland-gtk-shell.h        \
+       wayland/meta-wayland-inhibit-shortcuts.c \
+       wayland/meta-wayland-inhibit-shortcuts.h \
        $(NULL)
 endif
 
@@ -650,3 +654,7 @@ endef
        $(AM_V_GEN)$(WAYLAND_SCANNER) code $< $@
 %-server-protocol.h : $(srcdir)/wayland/protocol/%.xml
        $(AM_V_GEN)$(WAYLAND_SCANNER) server-header $< $@
+keyboard-shortcuts-inhibit-unstable-v1-protocol.c : 
$(WAYLAND_PROTOCOLS_DATADIR)/unstable/keyboard-shortcuts-inhibit/keyboard-shortcuts-inhibit-unstable-v1.xml
+       $(AM_V_GEN)$(WAYLAND_SCANNER) code < $< > $@
+keyboard-shortcuts-inhibit-unstable-v1-server-protocol.h : 
$(WAYLAND_PROTOCOLS_DATADIR)/unstable/keyboard-shortcuts-inhibit/keyboard-shortcuts-inhibit-unstable-v1.xml
+       $(AM_V_GEN)$(WAYLAND_SCANNER) server-header < $< > $@
diff --git a/src/wayland/meta-wayland-inhibit-shortcuts.c b/src/wayland/meta-wayland-inhibit-shortcuts.c
new file mode 100644
index 0000000..e4b7264
--- /dev/null
+++ b/src/wayland/meta-wayland-inhibit-shortcuts.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2017 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Olivier Fourdan <ofourdan redhat com>
+ */
+
+#include "config.h"
+
+#include <wayland-server.h>
+
+#include "keyboard-shortcuts-inhibit-unstable-v1-server-protocol.h"
+#include "wayland/meta-wayland-private.h"
+#include "wayland/meta-wayland-versions.h"
+#include "wayland/meta-wayland-inhibit-shortcuts.h"
+
+struct _MetaWaylandKeyboardShotscutsInhibit
+{
+  MetaWaylandSurface      *surface;
+  MetaWaylandSeat         *seat;
+  gulong                   inhibit_shortcut_handler;
+  gulong                   restore_shortcut_handler;
+  gulong                   surface_destroyed_handler;
+  struct wl_resource      *resource;
+};
+
+static void
+zwp_keyboard_shortcuts_inhibit_destroy (struct wl_client   *client,
+                                        struct wl_resource *resource)
+{
+  MetaWaylandKeyboardShotscutsInhibit *shortcut_inhibit;
+
+  shortcut_inhibit = wl_resource_get_user_data (resource);
+  if (shortcut_inhibit->surface)
+    {
+      g_signal_handler_disconnect (shortcut_inhibit->surface,
+                                   shortcut_inhibit->surface_destroyed_handler);
+
+      g_signal_handler_disconnect (shortcut_inhibit->surface,
+                                   shortcut_inhibit->inhibit_shortcut_handler);
+
+      g_signal_handler_disconnect (shortcut_inhibit->surface,
+                                   shortcut_inhibit->restore_shortcut_handler);
+
+      meta_wayland_surface_restore_shortcuts (shortcut_inhibit->surface,
+                                              shortcut_inhibit->seat);
+    }
+  g_free (shortcut_inhibit);
+  wl_resource_destroy (resource);
+}
+
+static const struct zwp_keyboard_shortcuts_inhibit_manager_v1_interface
+  meta_keyboard_shortcuts_inhibit_interface = {
+    zwp_keyboard_shortcuts_inhibit_destroy,
+  };
+
+static void
+surface_destroyed_cb (MetaWaylandSurface                  *surface,
+                      MetaWaylandKeyboardShotscutsInhibit *shortcut_inhibit)
+{
+  shortcut_inhibit->surface = NULL;
+  shortcut_inhibit->seat = NULL;
+}
+
+static void
+shortcuts_inhibited_cb (MetaWaylandSurface                  *surface,
+                        MetaWaylandKeyboardShotscutsInhibit *shortcut_inhibit)
+{
+  MetaWaylandKeyboard *keyboard = shortcut_inhibit->seat->keyboard;
+
+  /* Send active event only if the surface has keyboard focus */
+  if (keyboard->focus_surface == surface)
+    zwp_keyboard_shortcuts_inhibitor_v1_send_active (shortcut_inhibit->resource);
+}
+
+static void
+shortcuts_restored_cb (MetaWaylandSurface *surface,
+                       gpointer user_data)
+{
+  MetaWaylandKeyboardShotscutsInhibit *shortcut_inhibit = user_data;
+
+  zwp_keyboard_shortcuts_inhibitor_v1_send_inactive (shortcut_inhibit->resource);
+}
+
+static void
+zwp_keyboard_shortcuts_inhibit_manager_destroy (struct wl_client   *client,
+                                                struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static void
+zwp_keyboard_shortcuts_inhibit_manager_inhibit_shortcuts (struct wl_client   *client,
+                                                          struct wl_resource *resource,
+                                                          uint32_t            id,
+                                                          struct wl_resource *surface_resource,
+                                                          struct wl_resource *seat_resource)
+{
+  MetaWaylandKeyboardShotscutsInhibit *shortcut_inhibit;
+  MetaWaylandSurface *surface = wl_resource_get_user_data (surface_resource);
+  MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
+  struct wl_resource *keyboard_shortcuts_inhibit_resource;
+
+  keyboard_shortcuts_inhibit_resource =
+      wl_resource_create (client,
+                          &zwp_keyboard_shortcuts_inhibitor_v1_interface,
+                          META_ZWP_KEYBOARD_SHORTCUTS_INHIBIT_V1_VERSION,
+                          id);
+
+  shortcut_inhibit = g_new0 (MetaWaylandKeyboardShotscutsInhibit, 1);
+  shortcut_inhibit->surface = surface;
+  shortcut_inhibit->seat = seat;
+  shortcut_inhibit->resource = keyboard_shortcuts_inhibit_resource;
+
+  shortcut_inhibit->inhibit_shortcut_handler =
+    g_signal_connect (surface, "shortcuts-inhibited",
+                      G_CALLBACK (shortcuts_inhibited_cb),
+                      shortcut_inhibit);
+  shortcut_inhibit->restore_shortcut_handler =
+    g_signal_connect (surface, "shortcuts-restored",
+                      G_CALLBACK (shortcuts_restored_cb),
+                      shortcut_inhibit);
+
+  shortcut_inhibit->surface_destroyed_handler =
+    g_signal_connect (surface, "destroy",
+                      G_CALLBACK (surface_destroyed_cb),
+                      shortcut_inhibit);
+
+  meta_wayland_surface_inhibit_shortcuts (surface, seat);
+
+  wl_resource_set_implementation (keyboard_shortcuts_inhibit_resource,
+                                  &meta_keyboard_shortcuts_inhibit_interface,
+                                  shortcut_inhibit,
+                                  NULL);
+}
+
+static const struct zwp_keyboard_shortcuts_inhibit_manager_v1_interface
+  meta_keyboard_shortcuts_inhibit_manager_interface = {
+    zwp_keyboard_shortcuts_inhibit_manager_destroy,
+    zwp_keyboard_shortcuts_inhibit_manager_inhibit_shortcuts,
+  };
+
+static void
+bind_keyboard_shortcuts_inhibit (struct wl_client *client,
+                                 void             *data,
+                                 uint32_t          version,
+                                 uint32_t          id)
+{
+  struct wl_resource *resource;
+
+  resource = wl_resource_create (client,
+                                 &zwp_keyboard_shortcuts_inhibit_manager_v1_interface,
+                                 META_ZWP_KEYBOARD_SHORTCUTS_INHIBIT_V1_VERSION,
+                                 id);
+
+  wl_resource_set_implementation (resource,
+                                  &meta_keyboard_shortcuts_inhibit_manager_interface,
+                                  NULL, NULL);
+}
+
+gboolean
+meta_wayland_keyboard_shortcuts_inhibit_init (MetaWaylandCompositor *compositor)
+{
+  return (wl_global_create (compositor->wayland_display,
+                            &zwp_keyboard_shortcuts_inhibit_manager_v1_interface,
+                            META_ZWP_KEYBOARD_SHORTCUTS_INHIBIT_V1_VERSION,
+                            NULL,
+                            bind_keyboard_shortcuts_inhibit) != NULL);
+}
diff --git a/src/wayland/meta-wayland-inhibit-shortcuts.h b/src/wayland/meta-wayland-inhibit-shortcuts.h
new file mode 100644
index 0000000..fdd35dd
--- /dev/null
+++ b/src/wayland/meta-wayland-inhibit-shortcuts.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2017 Red Hat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by:
+ *     Olivier Fourdan <ofourdan redhat com>
+ */
+
+#ifndef META_WAYLAND_INHIBIT_SHORTCUTS_H
+#define META_WAYLAND_INHIBIT_SHORTCUTS_H
+
+#include <wayland-server.h>
+#include "wayland/meta-wayland-types.h"
+#include "meta/window.h"
+
+#define META_TYPE_WAYLAND_KEYBOARD_SHORTCUTS_INHIBIT 
(meta_wayland_keyboard_shortcuts_inhibit_resource_get_type ())
+G_DECLARE_FINAL_TYPE (MetaWaylandKeyboardShotscutsInhibit,
+                      meta_wayland_keyboard_shortcuts_inhibit_resource,
+                      META, WAYLAND_KEYBOARD_SHORTCUTS_INHIBIT,
+                      GObject);
+
+gboolean meta_wayland_keyboard_shortcuts_inhibit_init (MetaWaylandCompositor *compositor);
+
+#endif /* META_WAYLAND_INHIBIT_SHORTCUTS_H */
diff --git a/src/wayland/meta-wayland-versions.h b/src/wayland/meta-wayland-versions.h
index cbd794a..65496b4 100644
--- a/src/wayland/meta-wayland-versions.h
+++ b/src/wayland/meta-wayland-versions.h
@@ -48,5 +48,6 @@
 #define META_ZXDG_EXPORTER_V1_VERSION       1
 #define META_ZXDG_IMPORTER_V1_VERSION       1
 #define META_ZWP_LINUX_DMABUF_V1_VERSION    3
+#define META_ZWP_KEYBOARD_SHORTCUTS_INHIBIT_V1_VERSION 1
 
 #endif
diff --git a/src/wayland/meta-wayland.c b/src/wayland/meta-wayland.c
index d89cac5..e257391 100644
--- a/src/wayland/meta-wayland.c
+++ b/src/wayland/meta-wayland.c
@@ -42,6 +42,7 @@
 #include "meta-wayland-tablet-manager.h"
 #include "meta-wayland-xdg-foreign.h"
 #include "meta-wayland-dma-buf.h"
+#include "meta-wayland-inhibit-shortcuts.h"
 
 static MetaWaylandCompositor _meta_wayland_compositor;
 static char *_display_name_override;
@@ -357,6 +358,7 @@ meta_wayland_init (void)
   meta_wayland_pointer_constraints_init (compositor);
   meta_wayland_xdg_foreign_init (compositor);
   meta_wayland_dma_buf_init (compositor);
+  meta_wayland_keyboard_shortcuts_inhibit_init (compositor);
 
   if (!meta_xwayland_start (&compositor->xwayland_manager, compositor->wayland_display))
     g_error ("Failed to start X Wayland");