33 lines
793 B
Dart
33 lines
793 B
Dart
import 'package:flutter/material.dart';
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class AppBarWidget extends StatelessWidget implements PreferredSizeWidget {
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const AppBarWidget({
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required this.child,
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required this.controller,
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required this.visible,
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Key? key,
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}) : super(key: key);
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final PreferredSizeWidget child;
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final AnimationController controller;
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final bool visible;
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@override
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Size get preferredSize => child.preferredSize;
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@override
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Widget build(BuildContext context) {
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visible ? controller.reverse() : controller.forward();
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return SlideTransition(
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position: Tween<Offset>(
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begin: Offset.zero,
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end: const Offset(0, -1),
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).animate(CurvedAnimation(
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parent: controller,
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curve: Curves.easeInOutBack,
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)),
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child: child,
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);
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}
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}
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