mirror of
https://github.com/elementary/gala.git
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109 lines
3.4 KiB
Vala
109 lines
3.4 KiB
Vala
//
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// Copyright (C) 2014 Tom Beckmann
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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public class Gala.WindowListener : Object {
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public struct WindowGeometry {
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#if HAS_MUTTER45
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Mtk.Rectangle inner;
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Mtk.Rectangle outer;
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#else
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Meta.Rectangle inner;
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Meta.Rectangle outer;
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#endif
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}
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private static WindowListener? instance = null;
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public static void init (Meta.Display display) {
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if (instance != null)
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return;
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instance = new WindowListener ();
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foreach (unowned Meta.WindowActor actor in display.get_window_actors ()) {
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if (actor.is_destroyed ())
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continue;
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unowned Meta.Window window = actor.get_meta_window ();
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if (window.window_type == Meta.WindowType.NORMAL)
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instance.monitor_window (window);
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}
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display.window_created.connect ((window) => {
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if (window.window_type == Meta.WindowType.NORMAL)
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instance.monitor_window (window);
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});
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}
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public static unowned WindowListener get_default () requires (instance != null) {
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return instance;
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}
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public signal void window_no_longer_on_all_workspaces (Meta.Window window);
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private Gee.HashMap<Meta.Window, WindowGeometry?> unmaximized_state_geometry;
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private WindowListener () {
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unmaximized_state_geometry = new Gee.HashMap<Meta.Window, WindowGeometry?> ();
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}
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private void monitor_window (Meta.Window window) {
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window.notify.connect (window_notify);
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window.unmanaged.connect (window_removed);
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window_maximized_changed (window);
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}
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private void window_notify (Object object, ParamSpec pspec) {
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var window = (Meta.Window) object;
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switch (pspec.name) {
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case "maximized-horizontally":
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case "maximized-vertically":
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window_maximized_changed (window);
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break;
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case "on-all-workspaces":
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window_on_all_workspaces_changed (window);
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break;
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}
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}
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private void window_on_all_workspaces_changed (Meta.Window window) {
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if (window.on_all_workspaces)
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return;
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window_no_longer_on_all_workspaces (window);
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}
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private void window_maximized_changed (Meta.Window window) {
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WindowGeometry window_geometry = {};
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window_geometry.inner = window.get_frame_rect ();
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window_geometry.outer = window.get_buffer_rect ();
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unmaximized_state_geometry.@set (window, window_geometry);
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}
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public WindowGeometry? get_unmaximized_state_geometry (Meta.Window window) {
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return unmaximized_state_geometry.@get (window);
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}
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private void window_removed (Meta.Window window) {
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window.notify.disconnect (window_notify);
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window.unmanaged.disconnect (window_removed);
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}
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}
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