forked from dorkbox/SystemTray
bf3cb8de11
SystemTray into a crossPlatform proxy. WIP submenus
159 lines
6.1 KiB
Java
159 lines
6.1 KiB
Java
/*
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* Copyright 2014 dorkbox, llc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dorkbox.systemTray.linux;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.atomic.AtomicBoolean;
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import com.sun.jna.NativeLong;
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import com.sun.jna.Pointer;
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import dorkbox.systemTray.SystemTray;
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import dorkbox.systemTray.linux.jna.GEventCallback;
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import dorkbox.systemTray.linux.jna.GdkEventButton;
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import dorkbox.systemTray.linux.jna.Gobject;
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import dorkbox.systemTray.linux.jna.Gtk;
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import dorkbox.systemTray.util.ImageUtils;
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/**
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* Class for handling all system tray interactions via GTK.
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* <p/>
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* This is the "old" way to do it, and does not work with some desktop environments.
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*/
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public
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class GtkSystemTray extends GtkTypeSystemTray {
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private volatile Pointer trayIcon;
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// http://code.metager.de/source/xref/gnome/Platform/gtk%2B/gtk/deprecated/gtkstatusicon.c
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// https://github.com/djdeath/glib/blob/master/gobject/gobject.c
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// have to save these in a field to prevent GC on the objects (since they go out-of-scope from java)
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private final List<Object> gtkCallbacks = new ArrayList<Object>();
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// This is required if we have JavaFX or SWT shutdown hooks (to prevent us from shutting down twice...)
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private AtomicBoolean shuttingDown = new AtomicBoolean();
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private volatile boolean isActive = false;
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public
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GtkSystemTray(final SystemTray systemTray) {
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super(systemTray);
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if (SystemTray.FORCE_TRAY_TYPE == SystemTray.TYPE_APP_INDICATOR) {
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// if we force GTK type system tray, don't attempt to load AppIndicator libs
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throw new IllegalArgumentException("Unable to start GtkStatusIcon if 'SystemTray.FORCE_TRAY_TYPE' is set to AppIndicator");
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}
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ImageUtils.determineIconSize(SystemTray.TYPE_GTK_STATUSICON);
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Gtk.startGui();
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dispatch(new Runnable() {
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@Override
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public
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void run() {
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final Pointer trayIcon_ = Gtk.gtk_status_icon_new();
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trayIcon = trayIcon_;
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final GEventCallback gtkCallback = new GEventCallback() {
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@Override
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public
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void callback(Pointer notUsed, final GdkEventButton event) {
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// BUTTON_PRESS only (any mouse click)
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if (event.type == 4) {
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Gtk.gtk_menu_popup(_native, null, null, Gtk.gtk_status_icon_position_menu, trayIcon, 0, event.time);
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}
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}
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};
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final NativeLong button_press_event = Gobject.g_signal_connect_object(trayIcon, "button_press_event", gtkCallback,
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null, 0);
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// have to do this to prevent GC on these objects
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gtkCallbacks.add(gtkCallback);
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gtkCallbacks.add(button_press_event);
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}
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});
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Gtk.waitForStartup();
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// we have to be able to set our title, otherwise the gnome-shell extension WILL NOT work
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dispatch(new Runnable() {
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@Override
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public
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void run() {
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// by default, the title/name of the tray icon is "java". We are the only java-based tray icon, so we just use that.
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// If you change "SystemTray" to something else, make sure to change it in extension.js as well
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// necessary for gnome icon detection/placement because we move tray icons around by title. This is hardcoded
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// in extension.js, so don't change it
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Gtk.gtk_status_icon_set_title(trayIcon, "SystemTray");
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// can cause
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// Gdk-CRITICAL **: gdk_window_thaw_toplevel_updates: assertion 'window->update_and_descendants_freeze_count > 0' failed
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// Gdk-CRITICAL **: IA__gdk_window_thaw_toplevel_updates_libgtk_only: assertion 'private->update_and_descendants_freeze_count > 0' failed
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// ... so, bizzaro things going on here. These errors DO NOT happen if JavaFX is dispatching the events.
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// BUT this is REQUIRED when running JavaFX. For unknown reasons, the title isn't pushed to GTK, so our
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// gnome-shell extension cannot see our tray icon -- so naturally, it won't move it to the "top" area and
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// we appear broken.
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if (SystemTray.isJavaFxLoaded) {
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Gtk.gtk_status_icon_set_name(trayIcon, "SystemTray");
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}
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}
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});
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}
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@SuppressWarnings("FieldRepeatedlyAccessedInMethod")
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@Override
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public
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void shutdown() {
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if (!shuttingDown.getAndSet(true)) {
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dispatch(new Runnable() {
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@Override
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public
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void run() {
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// this hides the indicator
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Gtk.gtk_status_icon_set_visible(trayIcon, false);
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Gobject.g_object_unref(trayIcon);
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// mark for GC
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trayIcon = null;
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gtkCallbacks.clear();
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}
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});
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super.shutdown();
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}
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}
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public
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void setIcon_(final File iconFile) {
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dispatch(new Runnable() {
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@Override
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public
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void run() {
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Gtk.gtk_status_icon_set_from_file(trayIcon, iconFile.getAbsolutePath());
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if (!isActive) {
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isActive = true;
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Gtk.gtk_status_icon_set_visible(trayIcon, true);
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}
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}
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});
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}
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}
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