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That way the fling engages in the same direction as the scroll. For example, if you have a horizontal scroll nested inside a vertical scroll, the fling will take place in the same direction as the scroll.
79 lines
2.1 KiB
Dart
79 lines
2.1 KiB
Dart
import 'dart:sky' as sky;
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import 'package:sky/gestures/arena.dart';
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import 'package:sky/gestures/pointer_router.dart';
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import 'package:sky/gestures/scroll.dart';
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import 'package:sky/gestures/tap.dart';
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import 'package:test/test.dart';
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import '../engine/mock_events.dart';
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void main() {
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test('Should recognize pan', () {
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PointerRouter router = new PointerRouter();
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PanGestureRecognizer pan = new PanGestureRecognizer(router: router);
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TapGestureRecognizer tap = new TapGestureRecognizer(router: router);
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bool didStartPan = false;
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pan.onStart = () {
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didStartPan = true;
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};
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sky.Offset updatedScrollDelta;
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pan.onUpdate = (sky.Offset offset) {
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updatedScrollDelta = offset;
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};
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bool didEndPan = false;
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pan.onEnd = (sky.Offset velocity) {
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didEndPan = true;
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};
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bool didTap = false;
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tap.onTap = () {
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didTap = true;
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};
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TestPointer pointer = new TestPointer(5);
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sky.PointerEvent down = pointer.down(new Point(10.0, 10.0));
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pan.addPointer(down);
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tap.addPointer(down);
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GestureArena.instance.close(5);
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expect(didStartPan, isFalse);
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expect(updatedScrollDelta, isNull);
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expect(didEndPan, isFalse);
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expect(didTap, isFalse);
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router.route(down);
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expect(didStartPan, isFalse);
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expect(updatedScrollDelta, isNull);
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expect(didEndPan, isFalse);
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expect(didTap, isFalse);
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router.route(pointer.move(new Point(20.0, 20.0)));
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expect(didStartPan, isTrue);
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didStartPan = false;
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expect(updatedScrollDelta, new sky.Offset(10.0, -10.0));
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updatedScrollDelta = null;
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expect(didEndPan, isFalse);
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expect(didTap, isFalse);
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router.route(pointer.move(new Point(20.0, 25.0)));
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expect(didStartPan, isFalse);
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expect(updatedScrollDelta, new sky.Offset(0.0, -5.0));
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updatedScrollDelta = null;
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expect(didEndPan, isFalse);
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expect(didTap, isFalse);
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router.route(pointer.up());
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expect(didStartPan, isFalse);
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expect(updatedScrollDelta, isNull);
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expect(didEndPan, isTrue);
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didEndPan = false;
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expect(didTap, isFalse);
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pan.dispose();
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tap.dispose();
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});
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}
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