103 lines
3.3 KiB
JavaScript
103 lines
3.3 KiB
JavaScript
const { Clutter, GLib, GObject, Meta, St } = imports.gi;
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const Tweener = imports.ui.tweener;
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const Main = imports.ui.main;
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const Cairo = imports.cairo;
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var PieTimer = GObject.registerClass(
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class PieTimer extends St.DrawingArea {
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_init() {
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this._x = 0;
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this._y = 0;
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this._startTime = 0;
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this._duration = 0;
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super._init( { style_class: 'pie-timer',
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visible: false,
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can_focus: false,
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reactive: false });
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}
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vfunc_repaint() {
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let node = this.get_theme_node();
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let backgroundColor = node.get_color('-pie-background-color');
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let borderColor = node.get_color('-pie-border-color');
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let borderWidth = node.get_length('-pie-border-width');
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let [width, height] = this.get_surface_size();
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let radius = Math.min(width / 2, height / 2);
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let currentTime = GLib.get_monotonic_time() / 1000.0;
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let ellapsed = currentTime - this._startTime;
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let angle = (ellapsed / this._duration) * 2 * Math.PI;
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let startAngle = 3 * Math.PI / 2;
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let endAngle = startAngle + angle;
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let cr = this.get_context();
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cr.setLineCap(Cairo.LineCap.ROUND);
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cr.setLineJoin(Cairo.LineJoin.ROUND);
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cr.translate(width / 2, height / 2);
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cr.moveTo(0, 0);
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cr.arc(0, 0, radius - borderWidth, startAngle, endAngle);
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cr.lineTo(0, 0);
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cr.closePath();
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cr.setLineWidth(0);
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Clutter.cairo_set_source_color(cr, backgroundColor);
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cr.fillPreserve();
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cr.setLineWidth(borderWidth);
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Clutter.cairo_set_source_color(cr, borderColor);
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cr.stroke();
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cr.$dispose();
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}
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start(x, y, duration) {
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Tweener.removeTweens(this);
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this.x = x - this.width / 2;
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this.y = y - this.height / 2;
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this.show();
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Main.uiGroup.set_child_above_sibling(this, null);
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this._startTime = GLib.get_monotonic_time() / 1000.0;
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this._duration = duration;
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Tweener.addTween(this,
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{ opacity: 255,
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time: duration / 1000,
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transition: 'easeOutQuad',
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onUpdateScope: this,
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onUpdate() { this.queue_repaint() },
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onCompleteScope: this,
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onComplete() { this.stop(); }
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});
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}
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stop() {
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Tweener.removeTweens(this);
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this.hide();
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}
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});
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var PointerA11yTimeout = class PointerA11yTimeout {
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constructor() {
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let manager = Clutter.DeviceManager.get_default();
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let pieTimer = new PieTimer();
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Main.uiGroup.add_actor(pieTimer);
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manager.connect('ptr-a11y-timeout-started', (manager, device, type, timeout) => {
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let [x, y, mods] = global.get_pointer();
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pieTimer.start(x, y, timeout);
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if (type == Clutter.PointerA11yTimeoutType.GESTURE)
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global.display.set_cursor(Meta.Cursor.CROSSHAIR);
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});
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manager.connect('ptr-a11y-timeout-stopped', (manager, device, type) => {
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pieTimer.stop();
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if (type == Clutter.PointerA11yTimeoutType.GESTURE)
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global.display.set_cursor(Meta.Cursor.DEFAULT);
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});
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}
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};
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