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// SPDX-FileCopyrightText: 2023 Deminder <tremminder@gmail.com>
// SPDX-License-Identifier: GPL-3.0-or-later
import St from 'gi://St';
import Clutter from 'gi://Clutter';
import * as Main from 'resource:///org/gnome/shell/ui/main.js';
import { throttleTimeout, logDebug } from './util.js';
import {
foregroundActive,
observeForegroundActive,
unobserveForegroundActive,
} from './session-mode-aware.js';
export class Textbox {
textboxes = [];
constructor({ settings }) {
this.settings = settings;
[this.syncThrottled, this.syncThrottledCancel] = throttleTimeout(
this.sync.bind(this),
50
);
this.showSettingsId = settings.connect(
'changed::show-textboxes-value',
this.sync.bind(this)
);
observeForegroundActive(this, fgActive => {
if (!fgActive) {
this.hideAll();
}
});
}
destroy() {
if (this.showSettingsId) {
unobserveForegroundActive(this);
this.hideAll();
this.settings.disconnect(this.showSettingsId);
this.showSettingsId = null;
}
}
sync() {
this.syncThrottledCancel();
// remove hidden textboxes
this.textboxes = this.textboxes.filter(t => {
if (t['_hidden']) {
const sid = t['_sourceId'];
if (sid) {
clearTimeout(sid);
}
delete t['_sourceId'];
t.destroy();
}
return !t['_hidden'];
});
const monitor = Main.layoutManager.primaryMonitor;
let heightOffset = 0;
this.textboxes.forEach((textbox, i) => {
if (!('_sourceId' in textbox)) {
// start fadeout of textbox after 3 seconds
textbox['_sourceId'] = setTimeout(() => {
textbox['_sourceId'] = 0;
textbox.ease({
opacity: 0,
duration: 1000,
mode: Clutter.AnimationMode.EASE_OUT_QUAD,
onComplete: () => {
textbox['_hidden'] = 1;
this.syncThrottled();
},
});
}, 3000);
}
textbox.visible = this.settings.get_boolean('show-textboxes-value');
if (!textbox.visible) return;
if (i === 0) {
heightOffset = -textbox.height / 2;
}
textbox.set_position(
monitor.x + Math.floor(monitor.width / 2 - textbox.width / 2),
monitor.y + Math.floor(monitor.height / 2 + heightOffset)
);
heightOffset += textbox.height + 10;
if (textbox['_sourceId']) {
// set opacity before fadeout starts
textbox.opacity =
i === 0
? 255
: Math.max(
25,
25 + 230 * (1 - heightOffset / (monitor.height / 2))
);
}
});
}
hideAll() {
for (const t of this.textboxes) {
t['_hidden'] = 1;
}
this.sync();
}
/**
* Show a textbox message on the primary monitor
*
* @param textmsg
*/
showTextbox(textmsg) {
if (textmsg && foregroundActive()) {
for (const t of this.textboxes) {
// replace old textbox if it has the same text
if (t.text === textmsg) {
t['_hidden'] = 1;
}
}
logDebug(`show textbox: ${textmsg}`);
const textbox = new St.Label({
style_class: 'textbox-label',
text: textmsg,
opacity: 0,
});
Main.uiGroup.add_child(textbox);
this.textboxes.unshift(textbox);
this.syncThrottled();
}
}
}
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