135 lines
3.7 KiB
JavaScript
135 lines
3.7 KiB
JavaScript
/* exported PointerA11yTimeout */
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const { Clutter, GObject, Meta, St } = imports.gi;
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const Main = imports.ui.main;
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const Cairo = imports.cairo;
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const SUCCESS_ZOOM_OUT_DURATION = 150;
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var PieTimer = GObject.registerClass({
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Properties: {
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'angle': GObject.ParamSpec.double(
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'angle', 'angle', 'angle',
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GObject.ParamFlags.READWRITE,
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0, 2 * Math.PI, 0),
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},
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}, class PieTimer extends St.DrawingArea {
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_init() {
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this._angle = 0;
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super._init({
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style_class: 'pie-timer',
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opacity: 0,
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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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this.set_pivot_point(0.5, 0.5);
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}
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get angle() {
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return this._angle;
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}
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set angle(angle) {
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if (this._angle == angle)
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return;
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this._angle = angle;
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this.notify('angle');
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this.queue_repaint();
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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 startAngle = 3 * Math.PI / 2;
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let endAngle = startAngle + this._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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if (this._angle < 2 * Math.PI)
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cr.moveTo(0, 0);
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cr.arc(0, 0, radius - borderWidth, startAngle, endAngle);
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if (this._angle < 2 * Math.PI)
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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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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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this.ease({
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opacity: 255,
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duration: duration / 4,
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mode: Clutter.AnimationMode.EASE_IN_QUAD,
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});
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this.ease_property('angle', 2 * Math.PI, {
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duration,
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mode: Clutter.AnimationMode.LINEAR,
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onComplete: this._onTransitionComplete.bind(this),
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});
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}
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_onTransitionComplete() {
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this.ease({
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scale_x: 2,
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scale_y: 2,
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opacity: 0,
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duration: SUCCESS_ZOOM_OUT_DURATION,
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mode: Clutter.AnimationMode.EASE_OUT_QUAD,
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onStopped: () => this.destroy(),
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});
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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 seat = Clutter.get_default_backend().get_default_seat();
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seat.connect('ptr-a11y-timeout-started', (o, device, type, timeout) => {
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let [x, y] = global.get_pointer();
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this._pieTimer = new PieTimer();
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Main.uiGroup.add_actor(this._pieTimer);
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Main.uiGroup.set_child_above_sibling(this._pieTimer, null);
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this._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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seat.connect('ptr-a11y-timeout-stopped', (o, device, type, clicked) => {
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if (!clicked)
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this._pieTimer.destroy();
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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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