gala/daemon/MenuDaemon.vala

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//
// Copyright 2018-2020 elementary, Inc. (https://elementary.io)
//
// 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 3 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, see <http://www.gnu.org/licenses/>.
//
namespace Gala {
private const string DBUS_NAME = "org.pantheon.gala";
private const string DBUS_OBJECT_PATH = "/org/pantheon/gala";
private const string DAEMON_DBUS_NAME = "org.pantheon.gala.daemon";
private const string DAEMON_DBUS_OBJECT_PATH = "/org/pantheon/gala/daemon";
[DBus (name = "org.pantheon.gala")]
public interface WMDBus : GLib.Object {
public abstract void perform_action (Gala.ActionType type) throws DBusError, IOError;
}
[DBus (name = "org.pantheon.gala.daemon")]
public class MenuDaemon : Object {
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// Window Menu
private Granite.AccelLabel always_on_top_accellabel;
private Granite.AccelLabel close_accellabel;
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private Granite.AccelLabel hide_accellabel;
private Granite.AccelLabel move_accellabel;
private Granite.AccelLabel move_left_accellabel;
private Granite.AccelLabel move_right_accellabel;
private Granite.AccelLabel on_visible_workspace_accellabel;
private Granite.AccelLabel resize_accellabel;
private Granite.AccelLabel screenshot_accellabel;
private Gtk.Menu? window_menu = null;
private Gtk.MenuItem hide;
private Gtk.MenuItem maximize;
private Gtk.MenuItem move;
private Gtk.MenuItem resize;
private Gtk.CheckMenuItem always_on_top;
private Gtk.CheckMenuItem on_visible_workspace;
private Gtk.MenuItem move_left;
private Gtk.MenuItem move_right;
private Gtk.MenuItem close;
private Gtk.MenuItem screenshot;
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// Desktop Menu
private Gtk.Menu? desktop_menu = null;
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private WMDBus? wm_proxy = null;
private ulong always_on_top_sid = 0U;
private ulong on_visible_workspace_sid = 0U;
private static GLib.Settings keybind_settings;
private static GLib.Settings gala_keybind_settings;
static construct {
keybind_settings = new GLib.Settings ("org.gnome.desktop.wm.keybindings");
gala_keybind_settings = new GLib.Settings ("org.pantheon.desktop.gala.keybindings");
}
[DBus (visible = false)]
public void setup_dbus () {
var flags = BusNameOwnerFlags.ALLOW_REPLACEMENT | BusNameOwnerFlags.REPLACE;
Bus.own_name (BusType.SESSION, DAEMON_DBUS_NAME, flags, on_bus_acquired, () => {}, null);
Bus.watch_name (BusType.SESSION, DBUS_NAME, BusNameWatcherFlags.NONE, gala_appeared, lost_gala);
}
private void on_gala_get (GLib.Object? o, GLib.AsyncResult? res) {
try {
wm_proxy = Bus.get_proxy.end (res);
} catch (Error e) {
warning ("Failed to get Gala proxy: %s", e.message);
}
}
private void lost_gala () {
wm_proxy = null;
}
private void gala_appeared () {
if (wm_proxy == null) {
Bus.get_proxy.begin<WMDBus> (BusType.SESSION, DBUS_NAME, DBUS_OBJECT_PATH, 0, null, on_gala_get);
}
}
private void on_bus_acquired (DBusConnection conn) {
try {
conn.register_object (DAEMON_DBUS_OBJECT_PATH, this);
} catch (Error e) {
stderr.printf ("Error registering MenuDaemon: %s\n", e.message);
}
}
private void perform_action (Gala.ActionType type) {
if (wm_proxy != null) {
try {
wm_proxy.perform_action (type);
} catch (Error e) {
warning ("Failed to perform Gala action over DBus: %s", e.message);
}
}
}
private void init_window_menu () {
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hide_accellabel = new Granite.AccelLabel (_("Hide"));
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hide = new Gtk.MenuItem ();
hide.add (hide_accellabel);
hide.activate.connect (() => {
perform_action (Gala.ActionType.HIDE_CURRENT);
});
maximize = new Gtk.MenuItem ();
maximize.activate.connect (() => {
perform_action (Gala.ActionType.MAXIMIZE_CURRENT);
});
move_accellabel = new Granite.AccelLabel (_("Move"));
move = new Gtk.MenuItem ();
move.add (move_accellabel);
move.activate.connect (() => {
perform_action (Gala.ActionType.START_MOVE_CURRENT);
});
resize_accellabel = new Granite.AccelLabel (_("Resize"));
resize = new Gtk.MenuItem ();
resize.add (resize_accellabel);
resize.activate.connect (() => {
perform_action (Gala.ActionType.START_RESIZE_CURRENT);
});
always_on_top_accellabel = new Granite.AccelLabel (_("Always on Top"));
always_on_top = new Gtk.CheckMenuItem ();
always_on_top.add (always_on_top_accellabel);
always_on_top_sid = always_on_top.activate.connect (() => {
perform_action (Gala.ActionType.TOGGLE_ALWAYS_ON_TOP_CURRENT);
});
on_visible_workspace_accellabel = new Granite.AccelLabel (_("Always on Visible Workspace"));
on_visible_workspace = new Gtk.CheckMenuItem ();
on_visible_workspace.add (on_visible_workspace_accellabel);
on_visible_workspace_sid = on_visible_workspace.activate.connect (() => {
perform_action (Gala.ActionType.TOGGLE_ALWAYS_ON_VISIBLE_WORKSPACE_CURRENT);
});
move_left_accellabel = new Granite.AccelLabel (_("Move to Workspace Left"));
move_left = new Gtk.MenuItem ();
move_left.add (move_left_accellabel);
move_left.activate.connect (() => {
perform_action (Gala.ActionType.MOVE_CURRENT_WORKSPACE_LEFT);
});
move_right_accellabel = new Granite.AccelLabel (_("Move to Workspace Right"));
move_right = new Gtk.MenuItem ();
move_right.add (move_right_accellabel);
move_right.activate.connect (() => {
perform_action (Gala.ActionType.MOVE_CURRENT_WORKSPACE_RIGHT);
});
screenshot_accellabel = new Granite.AccelLabel (_("Take Screenshot"));
screenshot = new Gtk.MenuItem ();
screenshot.add (screenshot_accellabel);
screenshot.activate.connect (() => {
perform_action (Gala.ActionType.SCREENSHOT_CURRENT);
});
close_accellabel = new Granite.AccelLabel (_("Close"));
close = new Gtk.MenuItem ();
close.add (close_accellabel);
close.activate.connect (() => {
perform_action (Gala.ActionType.CLOSE_CURRENT);
});
window_menu = new Gtk.Menu ();
window_menu.append (screenshot);
window_menu.append (new Gtk.SeparatorMenuItem ());
window_menu.append (always_on_top);
window_menu.append (on_visible_workspace);
window_menu.append (move_left);
window_menu.append (move_right);
window_menu.append (new Gtk.SeparatorMenuItem ());
window_menu.append (move);
window_menu.append (resize);
window_menu.append (maximize);
window_menu.append (new Gtk.SeparatorMenuItem ());
window_menu.append (hide);
window_menu.append (close);
window_menu.show_all ();
}
public void show_window_menu (Gala.WindowFlags flags, int x, int y) throws DBusError, IOError {
if (window_menu == null) {
init_window_menu ();
}
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hide.visible = Gala.WindowFlags.CAN_HIDE in flags;
if (hide.visible) {
hide_accellabel.accel_string = keybind_settings.get_strv ("minimize")[0];
}
maximize.visible = Gala.WindowFlags.CAN_MAXIMIZE in flags;
if (maximize.visible) {
unowned string maximize_label;
if (Gala.WindowFlags.IS_MAXIMIZED in flags) {
maximize_label = (Gala.WindowFlags.IS_TILED in flags) ? _("Untile") : _("Unmaximize");
} else {
maximize_label = _("Maximize");
}
maximize.get_child ().destroy ();
maximize.add (
new Granite.AccelLabel (
maximize_label,
keybind_settings.get_strv ("toggle-maximized")[0]
)
);
}
move.visible = Gala.WindowFlags.ALLOWS_MOVE in flags;
if (move.visible) {
move_accellabel.accel_string = keybind_settings.get_strv ("begin-move")[0];
}
resize.visible = Gala.WindowFlags.ALLOWS_RESIZE in flags;
if (resize.visible) {
resize_accellabel.accel_string = keybind_settings.get_strv ("begin-resize")[0];
}
// Setting active causes signal fires on activate so
// we temporarily block those signals from emissions
SignalHandler.block (always_on_top, always_on_top_sid);
SignalHandler.block (on_visible_workspace, on_visible_workspace_sid);
always_on_top.active = Gala.WindowFlags.ALWAYS_ON_TOP in flags;
always_on_top_accellabel.accel_string = keybind_settings.get_strv ("always-on-top")[0];
on_visible_workspace.active = Gala.WindowFlags.ON_ALL_WORKSPACES in flags;
on_visible_workspace_accellabel.accel_string = keybind_settings.get_strv ("toggle-on-all-workspaces")[0];
SignalHandler.unblock (always_on_top, always_on_top_sid);
SignalHandler.unblock (on_visible_workspace, on_visible_workspace_sid);
move_right.sensitive = !on_visible_workspace.active;
if (move_right.sensitive) {
move_right_accellabel.accel_string = keybind_settings.get_strv ("move-to-workspace-right")[0];
}
move_left.sensitive = !on_visible_workspace.active;
if (move_left.sensitive) {
move_left_accellabel.accel_string = keybind_settings.get_strv ("move-to-workspace-left")[0];
}
screenshot_accellabel.accel_string = gala_keybind_settings.get_strv ("window-screenshot")[0];
close.visible = Gala.WindowFlags.CAN_CLOSE in flags;
if (close.visible) {
close_accellabel.accel_string = keybind_settings.get_strv ("close")[0];
}
// `opened` is used as workaround for https://github.com/elementary/gala/issues/1387
var opened = false;
Idle.add (() => {
window_menu.popup (null, null, (m, ref px, ref py, out push_in) => {
var scale = m.scale_factor;
px = x / scale;
// Move the menu 1 pixel outside of the pointer or else it closes instantly
// on the mouse up event
py = (y / scale) + 1;
push_in = true;
opened = true;
}, Gdk.BUTTON_SECONDARY, Gdk.CURRENT_TIME);
return opened ? Source.REMOVE : Source.CONTINUE;
});
}
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public void show_desktop_menu (int x, int y) throws DBusError, IOError {
if (desktop_menu == null) {
var change_wallpaper = new Gtk.MenuItem.with_label (_("Change Wallpaper…"));
change_wallpaper.activate.connect (() => {
try {
AppInfo.launch_default_for_uri ("settings://desktop/appearance/wallpaper", null);
} catch (Error e) {
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var message_dialog = new Granite.MessageDialog.with_image_from_icon_name (
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"Failed to Open Wallpaper Settings",
"Unable to open System Settings. A handler for the `settings://` URI scheme must be installed.",
"dialog-error",
Gtk.ButtonsType.CLOSE
);
message_dialog.show_error_details (e.message);
message_dialog.run ();
message_dialog.destroy ();
}
});
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var display_settings = new Gtk.MenuItem.with_label (_("Display Settings…"));
display_settings.activate.connect (() => {
try {
AppInfo.launch_default_for_uri ("settings://display", null);
} catch (Error e) {
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var message_dialog = new Granite.MessageDialog.with_image_from_icon_name (
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"Failed to Open Display Settings",
"Unable to open System Settings. A handler for the `settings://` URI scheme must be installed.",
"dialog-warning",
Gtk.ButtonsType.CLOSE
);
message_dialog.show_error_details (e.message);
message_dialog.run ();
message_dialog.destroy ();
}
});
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var system_settings = new Gtk.MenuItem.with_label (_("System Settings…"));
system_settings.activate.connect (() => {
try {
AppInfo.launch_default_for_uri ("settings://", null);
} catch (Error e) {
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var message_dialog = new Granite.MessageDialog.with_image_from_icon_name (
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"Failed to Open System Settings",
"Unable to open System Settings. A handler for the `settings://` URI scheme must be installed.",
"dialog-warning",
Gtk.ButtonsType.CLOSE
);
message_dialog.show_error_details (e.message);
message_dialog.run ();
message_dialog.destroy ();
}
});
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desktop_menu = new Gtk.Menu ();
desktop_menu.append (change_wallpaper);
desktop_menu.append (display_settings);
desktop_menu.append (new Gtk.SeparatorMenuItem ());
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desktop_menu.append (system_settings);
desktop_menu.show_all ();
}
desktop_menu.popup (null, null, (m, ref px, ref py, out push_in) => {
var scale = m.scale_factor;
px = x / scale;
// Move the menu 1 pixel outside of the pointer or else it closes instantly
// on the mouse up event
py = (y / scale) + 1;
push_in = false;
}, Gdk.BUTTON_SECONDARY, Gdk.CURRENT_TIME);
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}
}
}