128 lines
3.2 KiB
Dart
128 lines
3.2 KiB
Dart
import 'package:flutter/material.dart';
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class ProfileHeroAvatar extends StatelessWidget {
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const ProfileHeroAvatar({
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super.key,
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required this.tag,
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required this.size,
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required this.child,
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});
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final Object? tag;
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final double size;
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final Widget child;
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@override
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Widget build(BuildContext context) {
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final tag = this.tag;
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if (tag == null) return child;
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return Hero(
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tag: ('profile-avatar', tag),
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flightShuttleBuilder: _buildFlyingAvatar,
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child: _AvatarHeroChild(size: size, child: child),
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);
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}
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static Widget _buildFlyingAvatar(
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BuildContext flightContext,
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Animation<double> animation,
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HeroFlightDirection direction,
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BuildContext fromHeroContext,
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BuildContext toHeroContext,
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) {
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final from = _AvatarHeroChild.of(fromHeroContext);
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final to = _AvatarHeroChild.of(toHeroContext);
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final sharpest = from.size >= to.size ? from : to;
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return FittedBox(
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fit: BoxFit.fill,
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child: SizedBox.square(dimension: sharpest.size, child: sharpest.child),
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);
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}
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}
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class ProfileHeroName extends StatelessWidget {
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const ProfileHeroName({
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super.key,
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required this.tag,
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required this.text,
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required this.style,
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required this.child,
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});
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final Object? tag;
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final String text;
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final TextStyle style;
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final Widget child;
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@override
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Widget build(BuildContext context) {
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final tag = this.tag;
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if (tag == null) return child;
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return Hero(
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tag: ('profile-name', tag),
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flightShuttleBuilder: _buildFlyingName,
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child: _NameHeroChild(text: text, style: style, child: child),
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);
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}
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static Widget _buildFlyingName(
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BuildContext flightContext,
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Animation<double> animation,
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HeroFlightDirection direction,
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BuildContext fromHeroContext,
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BuildContext toHeroContext,
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) {
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final from = _NameHeroChild.of(fromHeroContext);
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final to = _NameHeroChild.of(toHeroContext);
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final push = direction == HeroFlightDirection.push;
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final style = TextStyleTween(
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begin: push ? from.style : to.style,
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end: push ? to.style : from.style,
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).animate(animation);
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return OverflowBox(
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alignment: Alignment.centerLeft,
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minWidth: 0,
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maxWidth: double.infinity,
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minHeight: 0,
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maxHeight: double.infinity,
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child: DefaultTextStyleTransition(
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style: style,
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softWrap: false,
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maxLines: 1,
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child: Text(to.text),
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),
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);
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}
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}
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class _AvatarHeroChild extends StatelessWidget {
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const _AvatarHeroChild({required this.size, required this.child});
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final double size;
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final Widget child;
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static _AvatarHeroChild of(BuildContext heroContext) =>
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(heroContext.widget as Hero).child as _AvatarHeroChild;
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@override
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Widget build(BuildContext context) => child;
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}
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class _NameHeroChild extends StatelessWidget {
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const _NameHeroChild({
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required this.text,
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required this.style,
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required this.child,
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});
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final String text;
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final TextStyle style;
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final Widget child;
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static _NameHeroChild of(BuildContext heroContext) =>
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(heroContext.widget as Hero).child as _NameHeroChild;
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@override
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Widget build(BuildContext context) => child;
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}
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