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const St = imports.gi.St;
const Main = imports.ui.main;
const Tweener = imports.ui.tweener;
let text, button;
function _hideHello() {
Main.uiGroup.remove_actor(text);
text = null;
}
function _showHello() {
if (!text) {
text = new St.Label({ style_class: 'helloworld-label', text: "Hello, world!" });
Main.uiGroup.add_actor(text);
}
text.opacity = 255;
let monitor = Main.layoutManager.primaryMonitor;
text.set_position(monitor.x + Math.floor(monitor.width / 2 - text.width / 2),
monitor.y + Math.floor(monitor.height / 2 - text.height / 2));
Tweener.addTween(text,
{ opacity: 0,
time: 2,
transition: 'easeOutQuad',
onComplete: _hideHello });
}
function init() {
button = new St.Bin({ style_class: 'panel-button',
reactive: true,
can_focus: true,
x_fill: true,
y_fill: false,
track_hover: true });
let icon = new St.Icon({ icon_name: 'system-run-symbolic',
style_class: 'system-status-icon' });
button.set_child(icon);
button.connect('button-press-event', _showHello);
}
function enable() {
Main.panel._rightBox.insert_child_at_index(button, 0);
}
function disable() {
Main.panel._rightBox.remove_child(button);
}
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