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179 lines
4.7 KiB
179 lines
4.7 KiB
// Copyright 2023 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import 'package:flutter_animate/flutter_animate.dart';
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import '../assets.dart';
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import '../styles.dart';
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import '../title_screen/title_screen.dart';
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import 'title_screen_ui.dart';
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class TitleScreen extends TitleScreenBase {
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const TitleScreen({super.key, required super.callback});
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@override
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State<TitleScreen> createState() => _TitleScreenState();
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}
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class _TitleScreenState extends State<TitleScreen> {
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Color get _emitColor =>
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AppColors.emitColors[_difficultyOverride ?? _difficulty];
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Color get _orbColor =>
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AppColors.orbColors[_difficultyOverride ?? _difficulty];
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/// Currently selected difficulty
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int _difficulty = 0;
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/// Currently focused difficulty (if any)
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int? _difficultyOverride;
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@override
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void initState() {
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super.initState();
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WidgetsBinding.instance
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.addPostFrameCallback((duration) => widget.callback(_orbColor));
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}
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void _handleDifficultyPressed(int value) {
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setState(() => _difficulty = value);
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widget.callback(_orbColor);
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}
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void _handleDifficultyFocused(int? value) {
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setState(() => _difficultyOverride = value);
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widget.callback(_orbColor);
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}
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final _finalReceiveLightAmt = 0.7;
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final _finalEmitLightAmt = 0.5;
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@override
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Widget build(BuildContext context) {
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return Center(
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child: _AnimatedColors(
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orbColor: _orbColor,
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emitColor: _emitColor,
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builder: (_, orbColor, emitColor) {
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return Stack(
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children: [
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/// Bg-Base
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Image.asset(AssetPaths.titleBgBase),
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/// Bg-Receive
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_LitImage(
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color: orbColor,
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imgSrc: AssetPaths.titleBgReceive,
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lightAmt: _finalReceiveLightAmt,
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),
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/// Mg-Base
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_LitImage(
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imgSrc: AssetPaths.titleMgBase,
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color: orbColor,
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lightAmt: _finalReceiveLightAmt,
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),
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/// Mg-Receive
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_LitImage(
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imgSrc: AssetPaths.titleMgReceive,
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color: orbColor,
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lightAmt: _finalReceiveLightAmt,
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),
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/// Mg-Emit
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_LitImage(
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imgSrc: AssetPaths.titleMgEmit,
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color: emitColor,
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lightAmt: _finalEmitLightAmt,
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),
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/// Fg-Rocks
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Image.asset(AssetPaths.titleFgBase),
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/// Fg-Receive
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_LitImage(
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imgSrc: AssetPaths.titleFgReceive,
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color: orbColor,
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lightAmt: _finalReceiveLightAmt,
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),
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/// Fg-Emit
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_LitImage(
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imgSrc: AssetPaths.titleFgEmit,
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color: emitColor,
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lightAmt: _finalEmitLightAmt,
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),
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/// UI
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Positioned.fill(
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child: TitleScreenUi(
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difficulty: _difficulty,
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onDifficultyFocused: _handleDifficultyFocused,
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onDifficultyPressed: _handleDifficultyPressed,
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),
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),
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],
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).animate().fadeIn(duration: 1.seconds, delay: .3.seconds);
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},
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),
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);
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}
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}
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class _LitImage extends StatelessWidget {
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const _LitImage({
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required this.color,
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required this.imgSrc,
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required this.lightAmt,
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});
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final Color color;
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final String imgSrc;
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final double lightAmt;
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@override
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Widget build(BuildContext context) {
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final hsl = HSLColor.fromColor(color);
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return ColorFiltered(
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colorFilter: ColorFilter.mode(
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hsl.withLightness(hsl.lightness * lightAmt).toColor(),
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BlendMode.modulate,
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),
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child: Image.asset(imgSrc),
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);
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}
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}
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class _AnimatedColors extends StatelessWidget {
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const _AnimatedColors({
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required this.emitColor,
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required this.orbColor,
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required this.builder,
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});
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final Color emitColor;
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final Color orbColor;
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final Widget Function(BuildContext context, Color orbColor, Color emitColor)
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builder;
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@override
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Widget build(BuildContext context) {
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final duration = .5.seconds;
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return TweenAnimationBuilder(
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tween: ColorTween(begin: emitColor, end: emitColor),
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duration: duration,
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builder: (_, emitColor, __) {
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return TweenAnimationBuilder(
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tween: ColorTween(begin: orbColor, end: orbColor),
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duration: duration,
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builder: (context, orbColor, __) {
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return builder(context, orbColor!, emitColor!);
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},
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);
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},
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);
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}
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}
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