wayland: Support always-on-top / sticky windows

Use the new gtk-shell APIs available in mutter to add support for this.

https://bugzilla.gnome.org/show_bug.cgi?id=710056

3 files changed, 41 insertions, 5 deletions

diff --git a/gdk/wayland/gdkdisplay-wayland.c b/gdk/wayland/gdkdisplay-wayland.c
index 71debb944a..f90db8ff48 100644
--- a/gdk/wayland/gdkdisplay-wayland.c
+++ b/gdk/wayland/gdkdisplay-wayland.c
@@ -169,7 +169,7 @@ gdk_registry_handle_global(void *data, struct wl_registry *registry, uint32_t id
 	wl_registry_bind(display_wayland->wl_registry, id, &wl_shell_interface, 1);
   } else if (strcmp(interface, "gtk_shell") == 0) {
     display_wayland->gtk_shell =
-      wl_registry_bind(display_wayland->wl_registry, id, &gtk_shell_interface, 1);
+      wl_registry_bind(display_wayland->wl_registry, id, &gtk_shell_interface, 2);
     _gdk_wayland_screen_set_has_gtk_shell (display_wayland->screen);
     /* We need another roundtrip to receive the shell capabilities */
     wait_for_roundtrip(display_wayland);
diff --git a/gdk/wayland/gdkwindow-wayland.c b/gdk/wayland/gdkwindow-wayland.c
index 70abf77da5..e9f2d3bf8a 100644
--- a/gdk/wayland/gdkwindow-wayland.c
+++ b/gdk/wayland/gdkwindow-wayland.c
@@ -1647,15 +1647,23 @@ gdk_wayland_window_deiconify (GdkWindow *window)
 static void
 gdk_wayland_window_stick (GdkWindow *window)
 {
+  GdkWindowImplWayland *impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
+
   if (GDK_WINDOW_DESTROYED (window))
     return;
+
+  gtk_surface_set_on_all_workspaces (impl->gtk_surface, TRUE);
 }
 
 static void
 gdk_wayland_window_unstick (GdkWindow *window)
 {
+  GdkWindowImplWayland *impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
+
   if (GDK_WINDOW_DESTROYED (window))
     return;
+
+  gtk_surface_set_on_all_workspaces (impl->gtk_surface, FALSE);
 }
 
 static void
@@ -1769,10 +1777,12 @@ static void
 gdk_wayland_window_set_keep_above (GdkWindow *window,
                                    gboolean   setting)
 {
-  g_return_if_fail (GDK_IS_WINDOW (window));
+  GdkWindowImplWayland *impl = GDK_WINDOW_IMPL_WAYLAND (window->impl);
 
   if (GDK_WINDOW_DESTROYED (window))
     return;
+
+  gtk_surface_set_always_on_top (impl->gtk_surface, setting);
 }
 
 static void
diff --git a/gdk/wayland/protocol/gtk-shell.xml b/gdk/wayland/protocol/gtk-shell.xml
index a4e25653f1..4407cb8981 100644
--- a/gdk/wayland/protocol/gtk-shell.xml
+++ b/gdk/wayland/protocol/gtk-shell.xml
@@ -1,11 +1,11 @@
 <protocol name="gtk">
 
-  <interface name="gtk_shell" version="1">
+  <interface name="gtk_shell" version="2">
     <enum name="capability">
       <entry name="global_app_menu" value="1"/>
       <entry name="global_menu_bar" value="2"/>
     </enum>
-    
+
     <event name="capabilities">
       <arg name="capabilities" type="uint"/>
     </event>
@@ -16,7 +16,7 @@
     </request>
   </interface>
 
-  <interface name="gtk_surface" version="1">
+  <interface name="gtk_surface" version="2">
     <request name="set_dbus_properties">
       <arg name="application_id" type="string" allow-null="true"/>
       <arg name="app_menu_path" type="string" allow-null="true"/>
@@ -25,6 +25,32 @@
       <arg name="application_object_path" type="string" allow-null="true"/>
       <arg name="unique_bus_name" type="string" allow-null="true"/>
     </request>
+
+    <request name="set_workspace">
+      <arg name="workspace" type="uint" />
+    </request>
+
+    <event name="workspace_changed">
+      <arg name="new_workspace" type="uint" />
+    </event>
+
+    <enum name="always_on_top_state">
+      <entry name="not_always_on_top" value="0" />
+      <entry name="always_on_top" value="1" />
+    </enum>
+
+    <request name="set_always_on_top">
+      <arg name="always_on_top" type="uint" />
+    </request>
+
+    <enum name="on_all_workspaces">
+      <entry name="not_on_all_workspaces" value="0" />
+      <entry name="on_all_workspaces" value="1" />
+    </enum>
+
+    <request name="set_on_all_workspaces">
+      <arg name="on_all_workspaces" type="uint" />
+    </request>
   </interface>
 
 </protocol>