Experimental non-null support.

1 files changed, 712 insertions, 0 deletions

diff --git a/.pc/default-icon-colour.patch/lib/main.vala b/.pc/default-icon-colour.patch/lib/main.vala
new file mode 100644
index 00000000..e0ac55ae
--- /dev/null
+++ b/.pc/default-icon-colour.patch/lib/main.vala
@@ -0,0 +1,712 @@
+[DBus (name = "com.canonical.indicator.keyboard")]
+public class Indicator.Keyboard.Service : Object {
+
+	private MainLoop? loop;
+	private Settings indicator_settings;
+	private Settings source_settings;
+	private Settings per_window_settings;
+	private Gnome.XkbInfo xkb_info;
+	private IBus.Bus? ibus;
+	private Bamf.Matcher? matcher;
+	private Gee.HashMap<string, uint>? window_sources;
+
+	private SimpleActionGroup? action_group;
+	private SimpleAction? indicator_action;
+	private MenuModel? menu_model;
+	private Menu? sources_menu;
+
+	private Icon?[]? icons;
+	private string[]? icon_strings;
+	private int[]? icon_string_uniques;
+	private uint[]? icon_string_subscripts;
+
+	[DBus (visible = false)]
+	public Service (bool force) {
+		Bus.own_name (BusType.SESSION,
+		              "com.canonical.indicator.keyboard",
+		              BusNameOwnerFlags.ALLOW_REPLACEMENT | (force ? BusNameOwnerFlags.REPLACE : 0),
+		              this.handle_bus_acquired,
+		              null,
+		              this.handle_name_lost);
+
+		this.indicator_settings = new Settings ("com.canonical.indicator.keyboard");
+		this.indicator_settings.changed["visible"].connect (this.handle_changed_visible);
+
+		this.source_settings = new Settings ("org.gnome.desktop.input-sources");
+		this.source_settings.changed["current"].connect (this.handle_changed_current);
+		this.source_settings.changed["sources"].connect (this.handle_changed_sources);
+
+		this.per_window_settings = new Settings ("org.gnome.libgnomekbd.desktop");
+		this.per_window_settings.changed["group-per-window"].connect (this.handle_changed_group_per_window);
+
+		this.xkb_info = new Gnome.XkbInfo ();
+
+		migrate_keyboard_layouts ();
+
+		update_window_sources ();
+
+		this.loop = new MainLoop ();
+		((!) this.loop).run ();
+	}
+
+	[DBus (visible = false)]
+	private IBus.Bus get_ibus () {
+		if (this.ibus == null) {
+			IBus.init ();
+			this.ibus = new IBus.Bus ();
+		}
+
+		return (!) this.ibus;
+	}
+
+	[DBus (visible = false)]
+	private void migrate_keyboard_layouts () {
+		if (!this.indicator_settings.get_boolean ("migrated")) {
+			var builder = new VariantBuilder (new VariantType ("a(ss)"));
+			var length = 0;
+
+			var layout_settings = new Settings ("org.gnome.libgnomekbd.keyboard");
+			var layouts = layout_settings.get_strv ("layouts");
+
+			foreach (var layout in layouts) {
+				var source = layout;
+
+				source = source.replace (" ", "+");
+				source = source.replace ("\t", "+");
+
+				builder.add ("(ss)", "xkb", source);
+				length++;
+			}
+
+			var engines = get_ibus ().list_active_engines ();
+
+			foreach (var engine in engines) {
+				if (length == 0 || engine.name.has_prefix ("xkb")) {
+					var source = "us";
+					string? layout = engine.get_layout ();
+					string? variant = engine.get_layout_variant ();
+
+					if (layout != null && ((!) layout).length == 0) {
+						layout = null;
+					}
+
+					if (variant != null && ((!) variant).length == 0) {
+						variant = null;
+					}
+
+					if (layout != null && variant != null) {
+						source = @"$((!) layout)+$((!) variant)";
+					} else if (layout != null) {
+						source = (!) layout;
+					}
+
+					builder.add ("(ss)", "xkb", source);
+					length++;
+				}
+
+				if (!engine.name.has_prefix ("xkb")) {
+					builder.add ("(ss)", "ibus", engine.name);
+					length++;
+				}
+			}
+
+			this.source_settings.set_value ("sources", builder.end ());
+
+			this.indicator_settings.set_boolean ("migrated", true);
+		}
+	}
+
+	[DBus (visible = false)]
+	private void update_window_sources () {
+		var group_per_window = this.per_window_settings.get_boolean ("group-per-window");
+
+		if (group_per_window != (this.window_sources != null)) {
+			if (group_per_window) {
+				this.window_sources = new Gee.HashMap<string, uint> ();
+				this.matcher = Bamf.Matcher.get_default ();
+				((!) this.matcher).active_window_changed.connect (this.handle_active_window_changed);
+			} else {
+				((!) this.matcher).active_window_changed.disconnect (this.handle_active_window_changed);
+				this.matcher = null;
+				this.window_sources = null;
+			}
+		}
+	}
+
+	[DBus (visible = false)]
+	private void handle_changed_group_per_window (string key) {
+		update_window_sources ();
+	}
+
+	[DBus (visible = false)]
+	private void handle_active_window_changed (Bamf.View? old_view, Bamf.View? new_view) {
+		if (old_view != null) {
+			((!) this.window_sources)[((!) old_view).path] = this.source_settings.get_uint ("current");
+		}
+
+		if (new_view != null) {
+			if (!((!) this.window_sources).has_key (((!) new_view).path)) {
+				var default_group = this.per_window_settings.get_int ("default-group");
+
+				if (default_group >= 0) {
+					this.source_settings.set_uint ("current", (uint) default_group);
+				}
+			} else {
+				this.source_settings.set_uint ("current", ((!) this.window_sources)[((!) new_view).path]);
+			}
+		}
+	}
+
+	[DBus (visible = false)]
+	private Gtk.StyleContext get_style_context () {
+		var context = new Gtk.StyleContext ();
+
+		context.set_screen (Gdk.Screen.get_default ());
+
+		var path = new Gtk.WidgetPath ();
+		path.append_type (typeof (Gtk.MenuItem));
+		context.set_path (path);
+
+		return context;
+	}
+
+	[DBus (visible = false)]
+	protected virtual Icon create_icon (string? text, uint subscript) {
+		const int W = 22;
+		const int H = 22;
+		const int w = 20;
+		const int h = 20;
+		const double R = 2.0;
+		const double TEXT_SIZE = 12.0;
+		const double SUBSCRIPT_SIZE = 8.0;
+
+		Pango.FontDescription description;
+		var style = get_style_context ();
+		var colour = style.get_color (Gtk.StateFlags.NORMAL);
+		style.get (Gtk.StateFlags.NORMAL, Gtk.STYLE_PROPERTY_FONT, out description);
+
+		var surface = new Cairo.ImageSurface (Cairo.Format.ARGB32, W, H);
+		var context = new Cairo.Context (surface);
+
+		context.translate (0.5 * (W - w), 0.5 * (H - h));
+
+		context.new_sub_path ();
+		context.arc (R, R, R, Math.PI, -0.5 * Math.PI);
+		context.arc (w - R, R, R, -0.5 * Math.PI, 0);
+		context.arc (w - R, h - R, R, 0, 0.5 * Math.PI);
+		context.arc (R, h - R, R, 0.5 * Math.PI, Math.PI);
+		context.close_path ();
+
+		context.set_source_rgba (colour.red, colour.green, colour.blue, colour.alpha);
+		context.fill ();
+		context.set_operator (Cairo.Operator.CLEAR);
+
+		if (text != null) {
+			var text_layout = Pango.cairo_create_layout (context);
+			text_layout.set_alignment (Pango.Alignment.CENTER);
+			description.set_absolute_size (Pango.units_from_double (TEXT_SIZE));
+			text_layout.set_font_description (description);
+			text_layout.set_text ((!) text, -1);
+			Pango.cairo_update_layout (context, text_layout);
+			int text_width;
+			int text_height;
+			text_layout.get_pixel_size (out text_width, out text_height);
+
+			if (subscript > 0) {
+				var subscript_layout = Pango.cairo_create_layout (context);
+				subscript_layout.set_alignment (Pango.Alignment.CENTER);
+				description.set_absolute_size (Pango.units_from_double (SUBSCRIPT_SIZE));
+				subscript_layout.set_font_description (description);
+				subscript_layout.set_text (@"$subscript", -1);
+				Pango.cairo_update_layout (context, subscript_layout);
+				int subscript_width;
+				int subscript_height;
+				subscript_layout.get_pixel_size (out subscript_width, out subscript_height);
+
+				context.save ();
+				context.translate ((w - (text_width + subscript_width)) / 2, (h - text_height) / 2);
+				Pango.cairo_layout_path (context, text_layout);
+				context.fill ();
+				context.restore ();
+
+				context.save ();
+				context.translate ((w + (text_width - subscript_width)) / 2, (h + text_height) / 2 - subscript_height);
+				Pango.cairo_layout_path (context, subscript_layout);
+				context.fill ();
+				context.restore ();
+			} else {
+				context.save ();
+				context.translate ((w - text_width) / 2, (h - text_height) / 2);
+				Pango.cairo_layout_path (context, text_layout);
+				context.fill ();
+				context.restore ();
+			}
+		}
+
+		var buffer = new ByteArray ();
+
+		surface.write_to_png_stream ((data) => {
+			buffer.append (data);
+			return Cairo.Status.SUCCESS;
+		});
+
+		return new BytesIcon (ByteArray.free_to_bytes ((owned) buffer));
+	}
+
+	[DBus (visible = false)]
+	private string get_icon_string (uint index) {
+		string? icon_string = null;
+
+		if (this.icon_strings == null) {
+			var array = this.source_settings.get_value ("sources");
+			this.icon_strings = new string[array.n_children ()];
+		}
+
+		if (index < ((!) this.icon_strings).length) {
+			icon_string = this.icon_strings[index];
+
+			if (icon_string == null) {
+				var array = this.source_settings.get_value ("sources");
+
+				string type;
+				string name;
+
+				array.get_child (index, "(ss)", out type, out name);
+
+				if (type == "xkb") {
+					string? short_name;
+
+					this.xkb_info.get_layout_info (name, null, out short_name, null, null);
+
+					if (short_name != null) {
+						this.icon_strings[index] = get_abbreviation ((!) short_name);
+						icon_string = this.icon_strings[index];
+					}
+				}
+			}
+		}
+
+		if (icon_string == null) {
+			icon_string = "";
+		}
+
+		return (!) icon_string;
+	}
+
+	[DBus (visible = false)]
+	private bool is_icon_string_unique (uint index) {
+		bool icon_string_unique = true;
+
+		if (this.icon_string_uniques == null) {
+			var array = this.source_settings.get_value ("sources");
+			this.icon_string_uniques = new int[array.n_children ()];
+
+			for (var i = 0; i < ((!) this.icon_string_uniques).length; i++) {
+				this.icon_string_uniques[i] = -1;
+			}
+		}
+
+		if (index < ((!) this.icon_string_uniques).length) {
+			if (this.icon_string_uniques[index] == -1) {
+				this.icon_string_uniques[index] = 1;
+
+				var icon_string = get_icon_string (index);
+
+				for (var i = 0; i < ((!) this.icon_string_uniques).length && this.icon_string_uniques[index] == 1; i++) {
+					if (i != index && get_icon_string (i) == icon_string) {
+						this.icon_string_uniques[index] = 0;
+					}
+				}
+			}
+
+			icon_string_unique = this.icon_string_uniques[index] != 0;
+		}
+
+		return icon_string_unique;
+	}
+
+	[DBus (visible = false)]
+	private uint get_icon_string_subscript (uint index) {
+		uint icon_string_subscript = 0;
+
+		if (this.icon_string_subscripts == null) {
+			var array = this.source_settings.get_value ("sources");
+			this.icon_string_subscripts = new uint[array.n_children ()];
+		}
+
+		if (index < ((!) this.icon_string_subscripts).length) {
+			icon_string_subscript = this.icon_string_subscripts[index];
+
+			if (icon_string_subscript == 0) {
+				this.icon_string_subscripts[index] = 1;
+
+				for (var i = (int) index - 1; i >= 0 && this.icon_string_subscripts[index] == 1; i--) {
+					if (get_icon_string (i) == get_icon_string (index)) {
+						this.icon_string_subscripts[index] = get_icon_string_subscript (i) + 1;
+					}
+				}
+
+				icon_string_subscript = this.icon_string_subscripts[index];
+			}
+		}
+
+		return icon_string_subscript;
+	}
+
+	[DBus (visible = false)]
+	private Icon? get_icon (uint index) {
+		Icon? icon = null;
+
+		if (this.icons == null) {
+			var array = this.source_settings.get_value ("sources");
+			this.icons = new Icon?[array.n_children ()];
+		}
+
+		if (index < ((!) this.icons).length) {
+			icon = this.icons[index];
+
+			if (icon == null) {
+				var array = this.source_settings.get_value ("sources");
+
+				string type;
+				string name;
+
+				array.get_child (index, "(ss)", out type, out name);
+
+				if (type == "xkb") {
+					var icon_string = get_icon_string (index);
+					var icon_unique = is_icon_string_unique (index);
+					var icon_subscript = get_icon_string_subscript (index);
+
+					if (icon_string.get_char () != '\0') {
+						string icon_name;
+
+						if (icon_unique) {
+							icon_name = @"indicator-keyboard-$((!) icon_string)";
+						} else {
+							icon_name = @"indicator-keyboard-$((!) icon_string)-$icon_subscript";
+						}
+
+						var icon_theme = Gtk.IconTheme.get_default ();
+						Gtk.IconInfo? icon_info = icon_theme.lookup_icon (icon_name, 22, 0);
+
+						if (icon_info != null) {
+							try {
+								this.icons[index] = Icon.new_for_string (((!) icon_info).get_filename ());
+							} catch (Error error) {
+								this.icons[index] = null;
+							}
+						}
+					}
+
+					if (this.icons[index] == null) {
+						if (icon_unique) {
+							this.icons[index] = create_icon (icon_string, 0);
+						} else {
+							this.icons[index] = create_icon (icon_string, icon_subscript);
+						}
+					}
+				} else if (type == "ibus") {
+					var names = new string[2];
+					names[0] = name;
+					var engines = get_ibus ().get_engines_by_names (names);
+					var engine = engines[0];
+
+					try {
+						this.icons[index] = Icon.new_for_string (engine.get_icon ());
+					} catch {
+						warn_if_reached ();
+					}
+				}
+
+				icon = this.icons[index];
+			}
+		}
+
+		return icon;
+	}
+
+	[DBus (visible = false)]
+	protected virtual SimpleActionGroup create_action_group (Action root_action) {
+		var group = new SimpleActionGroup ();
+
+		group.insert (root_action);
+		group.insert (this.source_settings.create_action ("current"));
+
+		var action = new SimpleAction ("map", null);
+		action.activate.connect (this.handle_activate_map);
+		group.insert (action);
+
+		action = new SimpleAction ("chart", null);
+		action.activate.connect (this.handle_activate_chart);
+		group.insert (action);
+
+		action = new SimpleAction ("settings", null);
+		action.activate.connect (this.handle_activate_settings);
+		group.insert (action);
+
+		return group;
+	}
+
+	[DBus (visible = false)]
+	private void update_indicator_action () {
+		var visible = this.indicator_settings.get_boolean ("visible");
+		var current = this.source_settings.get_uint ("current");
+		var icon = get_icon (current);
+		Variant state;
+
+		if (icon != null) {
+			state = new Variant.parsed ("{ 'visible' : <%b>, 'icon' : %v }", visible, ((!) icon).serialize ());
+		} else {
+			state = new Variant.parsed ("{ 'visible' : <%b> }", visible);
+		}
+
+		get_indicator_action ().set_state (state);
+	}
+
+	[DBus (visible = false)]
+	private SimpleAction get_indicator_action () {
+		if (this.indicator_action == null) {
+			var state = new Variant.parsed ("{ 'visible' : <false> }");
+			this.indicator_action = new SimpleAction.stateful ("indicator", null, state);
+			update_indicator_action ();
+		}
+
+		return (!) this.indicator_action;
+	}
+
+	[DBus (visible = false)]
+	public SimpleActionGroup get_action_group () {
+		if (this.action_group == null) {
+			this.action_group = create_action_group (get_indicator_action ());
+		}
+
+		return (!) this.action_group;
+	}
+
+	[DBus (visible = false)]
+	protected virtual MenuModel create_menu_model (MenuModel section_menu) {
+		var menu = new Menu ();
+
+		var submenu = new Menu ();
+
+		submenu.append_section (null, section_menu);
+
+		var section = new Menu ();
+		section.append (_ ("Character Map"), "indicator.map");
+		section.append (_ ("Keyboard Layout Chart"), "indicator.chart");
+		section.append (_ ("Text Entry Settings..."), "indicator.settings");
+		submenu.append_section (null, section);
+
+		var indicator = new MenuItem.submenu ("x", submenu);
+		indicator.set_attribute ("x-canonical-type", "s", "com.canonical.indicator.root");
+		indicator.set_detailed_action ("indicator.indicator");
+		menu.append_item (indicator);
+
+		return menu;
+	}
+
+	[DBus (visible = false)]
+	private string get_display_name (string layout) {
+		string? language = Xkl.get_language_name (layout);
+		string? country = Xkl.get_country_name (layout);
+		var has_language = language != null && ((!) language).get_char () != '\0';
+		var has_country = country != null && ((!) country).get_char () != '\0';
+
+		if (has_language && has_country) {
+			return @"$((!) language) ($((!) country))";
+		} else if (has_language) {
+			return (!) language;
+		} else if (has_country) {
+			return (!) country;
+		} else {
+			return "";
+		}
+	}
+
+	[DBus (visible = false)]
+	private void update_sources_menu () {
+		if (this.sources_menu != null) {
+			var menu = get_sources_menu ();
+
+			while (menu.get_n_items () > 0)
+				menu.remove (0);
+
+			VariantIter iter;
+			string type;
+			string name;
+
+			this.source_settings.get ("sources", "a(ss)", out iter);
+
+			for (var i = 0; iter.next ("(ss)", out type, out name); i++) {
+				if (type == "xkb") {
+					string? display_name;
+					string? layout_name;
+
+					this.xkb_info.get_layout_info (name, out display_name, null, out layout_name, null);
+
+					if (display_name != null) {
+						name = (!) display_name;
+					} else if (layout_name != null) {
+						name = get_display_name ((!) layout_name);
+					}
+				}
+				else if (type == "ibus") {
+					var names = new string[2];
+					names[0] = name;
+					var engines = get_ibus ().get_engines_by_names (names);
+					var engine = engines[0];
+					string? language = engine.get_language ();
+					string? display_name = engine.get_longname ();
+
+					if (language != null) {
+						language = Xkl.get_language_name ((!) language);
+					}
+
+					if (language != null && display_name != null) {
+						name = @"$((!) language) ($((!) display_name))";
+					} else if (language != null) {
+						name = (!) language;
+					} else if (display_name != null) {
+						name = (!) display_name;
+					}
+				}
+
+				var menu_item = new MenuItem (name, "indicator.current");
+				menu_item.set_attribute (Menu.ATTRIBUTE_TARGET, "u", i);
+
+				var icon = get_icon (i);
+				if (icon != null) {
+					menu_item.set_icon ((!) icon);
+				}
+
+				menu.append_item (menu_item);
+			}
+		} else {
+			get_sources_menu ();
+		}
+	}
+
+	[DBus (visible = false)]
+	private Menu get_sources_menu () {
+		if (this.sources_menu == null) {
+			this.sources_menu = new Menu ();
+			update_sources_menu ();
+		}
+
+		return (!) this.sources_menu;
+	}
+
+	[DBus (visible = false)]
+	public MenuModel get_menu_model () {
+		if (this.menu_model == null) {
+			this.menu_model = create_menu_model (get_sources_menu ());
+		}
+
+		return (!) this.menu_model;
+	}
+
+	[DBus (visible = false)]
+	private void handle_changed_visible (string key) {
+		update_indicator_action ();
+	}
+
+	[DBus (visible = false)]
+	private void handle_changed_current (string key) {
+		update_indicator_action ();
+	}
+
+	[DBus (visible = false)]
+	private void handle_changed_sources (string key) {
+		this.icon_string_subscripts = null;
+		this.icon_string_uniques = null;
+		this.icon_strings = null;
+		this.icons = null;
+
+		update_sources_menu ();
+		update_indicator_action ();
+	}
+
+	[DBus (visible = false)]
+	private void handle_activate_map (Variant? parameter) {
+		try {
+			Process.spawn_command_line_async ("gucharmap");
+		} catch {
+			warn_if_reached ();
+		}
+	}
+
+	[DBus (visible = false)]
+	private void handle_activate_chart (Variant? parameter) {
+		var layout = "us";
+		string? variant = null;
+
+		var current = this.source_settings.get_uint ("current");
+		var array = this.source_settings.get_value ("sources");
+
+		if (current < array.n_children ()) {
+			string type;
+			string name;
+
+			array.get_child (current, "(ss)", out type, out name);
+
+			if (type == "xkb") {
+				this.xkb_info.get_layout_info (name, null, null, out layout, out variant);
+			} else if (type == "ibus") {
+				var names = new string[2];
+				names[0] = name;
+				var engines = get_ibus ().get_engines_by_names (names);
+				var engine = engines[0];
+
+				layout = engine.get_layout ();
+				variant = engine.get_layout_variant ();
+			}
+		}
+
+		try {
+			string command;
+
+			if (variant != null && ((!) variant).get_char () != '\0') {
+				command = @"gkbd-keyboard-display -l \"$layout\t$((!) variant)\"";
+			} else {
+				command = @"gkbd-keyboard-display -l $layout";
+			}
+
+			Process.spawn_command_line_async (command);
+		} catch {
+			warn_if_reached ();
+		}
+	}
+
+	[DBus (visible = false)]
+	private void handle_activate_settings (Variant? parameter) {
+		try {
+			Process.spawn_command_line_async ("gnome-control-center region layouts");
+		} catch {
+			warn_if_reached ();
+		}
+	}
+
+	[DBus (visible = false)]
+	private void handle_bus_acquired (DBusConnection connection, string name) {
+		try {
+			connection.export_action_group ("/com/canonical/indicator/keyboard", get_action_group ());
+			connection.export_menu_model ("/com/canonical/indicator/keyboard/desktop", get_menu_model ());
+		} catch {
+			warn_if_reached ();
+		}
+	}
+
+	[DBus (visible = false)]
+	private void handle_name_lost (DBusConnection connection, string name) {
+		((!) this.loop).quit ();
+		this.loop = null;
+	}
+
+	[DBus (visible = false)]
+	public static int main (string[] args) {
+		Gtk.init (ref args);
+		new Service ("--force" in args);
+		return 0;
+	}
+}