mirror of
https://github.com/flame-engine/flame.git
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5c47d7f6d7
* Added Component.childrenFactory * fix some of the lint warnings * more lint warnings * remove changelog entry * more analyzer warnings * one more warning * one more warning * remove more unused imports * fix more warnings * another warning * one more warning * a lot more warnings * some more warnings * fix warnings in flame_svg * fix warnings in flame_bloc * Remove OrderedSet override feature * Remove testRandom change * Remove unnecessary type checks * Re-remove deprecated argument in random_test Co-authored-by: Pasha Stetsenko <stpasha@google.com>
84 lines
1.9 KiB
Dart
84 lines
1.9 KiB
Dart
import 'package:meta/meta.dart';
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import '../../../components.dart';
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import '../../../input.dart';
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/// The [ButtonComponent] bundles two [PositionComponent]s, one that shows while
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/// the button is being pressed, and one that shows otherwise.
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///
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/// Note: You have to set the [button] in [onLoad] if you are not passing it in
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/// through the constructor.
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class ButtonComponent extends PositionComponent with Tappable {
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late final PositionComponent? button;
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late final PositionComponent? buttonDown;
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/// Callback for what should happen when the button is pressed.
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/// If you want to interact with [onTapUp] or [onTapCancel] it is recommended
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/// to extend [ButtonComponent].
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void Function()? onPressed;
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ButtonComponent({
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this.button,
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this.buttonDown,
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this.onPressed,
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Vector2? position,
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Vector2? size,
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Vector2? scale,
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double? angle,
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Anchor? anchor,
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int? priority,
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}) : super(
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position: position,
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size: size ?? button?.size,
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scale: scale,
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angle: angle,
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anchor: anchor,
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priority: priority,
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);
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@override
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@mustCallSuper
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void onMount() {
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assert(
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button != null,
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'The button has to either be passed in as an argument or set in onLoad',
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);
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final idleButton = button;
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if (idleButton != null && !contains(idleButton)) {
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add(idleButton);
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}
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}
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@override
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@mustCallSuper
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bool onTapDown(TapDownInfo info) {
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if (buttonDown != null) {
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if (button != null) {
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remove(button!);
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}
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add(buttonDown!);
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}
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onPressed?.call();
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return false;
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}
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@override
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@mustCallSuper
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bool onTapUp(TapUpInfo info) {
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onTapCancel();
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return true;
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}
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@override
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@mustCallSuper
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bool onTapCancel() {
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if (buttonDown != null) {
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remove(buttonDown!);
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if (button != null) {
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add(button!);
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}
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}
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return false;
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}
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}
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