[gnome-games] ui: Make ApplicationWindow handle fullscreen

[Adrien Plazas <aplazas src gnome org>]

commit 4ccd77d5a9dd35a5cb124e7767adc0ebcb2e6a2b
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sat Jul 30 18:19:24 2016 +0200

    ui: Make ApplicationWindow handle fullscreen
    
    This will be used in the next commit to implement fullscreen support.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769329

 data/ui/application-window.ui  |    2 ++
 src/ui/application-window.vala |   27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 0 deletions(-)
---
diff --git a/data/ui/application-window.ui b/data/ui/application-window.ui
index 1d57769..b6593ca 100644
--- a/data/ui/application-window.ui
+++ b/data/ui/application-window.ui
@@ -9,6 +9,7 @@
     <property name="show_menubar">False</property>
     <signal name="delete-event" after="yes" handler="on_delete_event"/>
     <signal name="key-press-event" after="yes" handler="on_key_pressed"/>
+    <signal name="window-state-event" after="yes" handler="on_window_state_event"/>
     <child>
       <object class="GtkStack" id="content_box">
         <property name="visible">True</property>
@@ -25,6 +26,7 @@
         <child>
           <object class="GamesDisplayBox" id="display_box">
             <property name="visible">True</property>
+            <signal name="back" handler="on_display_back"/>
           </object>
           <packing>
             <property name="name">display</property>
diff --git a/src/ui/application-window.vala b/src/ui/application-window.vala
index 3bd25be..138f044 100644
--- a/src/ui/application-window.vala
+++ b/src/ui/application-window.vala
@@ -15,6 +15,8 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
                                content_box.set_visible_child (collection_box);
                                header_bar.set_visible_child (collection_header_bar);
 
+                               is_fullscreen = false;
+
                                if (display_box.runner != null) {
                                        display_box.runner.pause ();
                                        display_box.runner = null;
@@ -33,6 +35,19 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
                get { return _ui_state; }
        }
 
+       private bool _is_fullscreen;
+       public bool is_fullscreen {
+               set {
+                       _is_fullscreen = value && (ui_state == UiState.DISPLAY);
+
+                       if (_is_fullscreen)
+                               fullscreen ();
+                       else
+                               unfullscreen ();
+               }
+               get { return _is_fullscreen; }
+       }
+
        private bool _search_mode;
        public bool search_mode {
                set { _search_mode = value && (ui_state == UiState.COLLECTION); }
@@ -54,6 +69,7 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
        private DisplayHeaderBar display_header_bar;
 
        private Binding box_search_binding;
+       private Binding box_fullscreen_binding;
        private Binding header_bar_search_binding;
 
        private HashTable<Game, Runner> runners;
@@ -72,6 +88,9 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
                                                    BindingFlags.BIDIRECTIONAL);
                header_bar_search_binding = bind_property ("search-mode", collection_header_bar, 
"search-mode",
                                                           BindingFlags.BIDIRECTIONAL);
+
+               box_fullscreen_binding = bind_property ("is-fullscreen", display_box, "is-fullscreen",
+                                                       BindingFlags.BIDIRECTIONAL);
        }
 
        public void run_game (Game game) {
@@ -134,6 +153,13 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
        }
 
        [GtkCallback]
+       public bool on_window_state_event (Gdk.EventWindowState event) {
+               is_fullscreen = (bool) (event.new_window_state & Gdk.WindowState.FULLSCREEN);
+
+               return false;
+       }
+
+       [GtkCallback]
        private void on_game_activated (Game game) {
                run_game (game);
        }
@@ -157,6 +183,7 @@ private class Games.ApplicationWindow : Gtk.ApplicationWindow {
                }
 
                display_header_bar.game_title = game.name;
+               display_box.header_bar.game_title = game.name;
                display_box.runner = runner;
                ui_state = UiState.DISPLAY;