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334 lines
8.7 KiB
334 lines
8.7 KiB
import 'dart:async';
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import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:flip_card/flip_card.dart';
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import 'package:recook/constants/constants.dart';
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import 'package:recook/constants/header.dart';
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class BingoCardModel {
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dynamic cardFaceFront;
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dynamic cardFaceBack;
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bool isBingo;
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BingoCardModel({
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this.cardFaceBack,
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this.cardFaceFront,
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this.isBingo,
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});
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}
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class BingoCardController {
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Function stopAnimation;
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Function startAnimation;
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}
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class BingoCardWidget extends StatefulWidget {
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final List<BingoCardModel> bingoCardModels;
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final BingoCardController controller;
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final VoidCallback beforeBack;
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final bool inkWell;
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final Duration switchDuration;
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final Duration animationDuration;
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final Duration flipDuration;
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final double aspectRatio;
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final num rowSize;
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final double spacing;
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final num bingoType;
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///抽奖组件
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///
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///beforeBack:VoidCallBack 返回事件回调
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///
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///inkWll:bool 背景InkWell化
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///
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///controller:BingoCardController 卡片控制器
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///
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///aspectRatio:double 卡片长宽比
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///
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///rowSize:卡片水平数量
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///
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///spacing:卡片间距
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///
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///bingoCardModels:BingoCardModel 抽奖卡片模型
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///
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///switchDuration 切换动画速度
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///
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///animationDuration 卡片遮罩层速度
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///
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///flipAnimation 卡片翻转速度
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BingoCardWidget({
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Key key,
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this.beforeBack,
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this.inkWell = true,
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this.controller,
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this.aspectRatio = 3 / 4,
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this.rowSize = 3,
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this.spacing = 10.0,
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@required this.bingoCardModels,
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this.switchDuration = const Duration(milliseconds: 300),
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this.animationDuration = const Duration(milliseconds: 300),
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this.flipDuration = const Duration(milliseconds: 1000),
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this.bingoType,
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}) : assert(bingoCardModels.length >= rowSize, "bingoCard小于rowSize"),
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assert(bingoCardModels.length % rowSize == 0),
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super(key: key);
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@override
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_BingoCardWidgetState createState() => _BingoCardWidgetState();
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}
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class _BingoCardWidgetState extends State<BingoCardWidget> {
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bool _backgroundDarkMask = false;
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Timer _timer;
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List<bool> _cardState = [];
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List<GlobalKey<FlipCardState>> _cardKeys = [];
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List<BingoCardModel> result = [];
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bool _isShowResult = false;
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//当前选中卡片Index
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num _nowChooseIndex;
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@override
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void initState() {
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super.initState();
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result = widget.bingoCardModels;
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//打乱卡片顺序
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result.shuffle();
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//初始化卡片Key
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for (int i = 0; i < result.length; i++) {
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_cardState.add(false);
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_cardKeys.add(GlobalKey<FlipCardState>());
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}
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widget.controller?.startAnimation = () {
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setState(() {
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_backgroundDarkMask = true;
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});
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num _nowCardIndex;
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_nowCardIndex = result.length - 1;
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num preCardIndex;
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_timer = Timer.periodic(widget.switchDuration, (timer) {
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_nowChooseIndex = _nowCardIndex;
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_cardState[_nowCardIndex] = true;
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if (preCardIndex != null) {
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_cardState[preCardIndex] = false;
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}
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preCardIndex = _nowCardIndex;
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if (_nowCardIndex == 0) {
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_nowCardIndex = result.length - 1;
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} else
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_nowCardIndex--;
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setState(() {});
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});
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};
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widget.controller?.stopAnimation = () {
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_timer?.cancel();
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for (int i = 0; i < result.length; i++) {
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if (result[i].isBingo) {
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BingoCardModel temp = result[_nowChooseIndex];
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result[_nowChooseIndex] = result[i];
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result[i] = temp;
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break;
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}
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}
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setState(() {});
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_cardKeys.forEach((element) {
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element.currentState.toggleCard();
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});
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};
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}
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@override
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void dispose() {
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super.dispose();
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_timer?.cancel();
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}
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@override
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Widget build(BuildContext context) {
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return Material(
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color: Colors.transparent,
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child: Stack(
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children: <Widget>[
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_buildBackLayer(),
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Center(
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child: Stack(
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children: <Widget>[
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_buildBackground(),
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Positioned(
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left: 50,
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right: 50,
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top: 80,
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child: _buildChild(),
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),
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Positioned(
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bottom: 60 * 2.h,
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left: 0,
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right: 0,
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child: Center(
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child: _buildButton(),
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),
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),
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Positioned(
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left: 0,
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right: 0,
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bottom: 105 * 2.h,
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child: Center(
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child: _isShowResult
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? Text(
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widget.bingoType == 0
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? '抱歉未抽中任何奖项'
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: '可在“我的”-“卡包”中查看',
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style: TextStyle(
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fontSize: 12 * 2.sp,
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color: Color(0xFFFFF7DF),
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),
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)
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: SizedBox(),
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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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),
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);
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}
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_buildBackground() {
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return Image.asset(R.ASSETS_LOTTERY_BACKGROUND_PNG_WEBP);
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}
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_buildButton() {
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return GestureDetector(
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onTap: _isShowResult
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? () {
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Navigator.pop(context);
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}
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: () {
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widget.controller.startAnimation();
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Future.delayed(
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Duration(milliseconds: 1000 + Random().nextInt(2000)),
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() {
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widget.controller.stopAnimation();
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setState(() {
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_isShowResult = true;
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});
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},
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);
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},
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child: Container(
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decoration: BoxDecoration(
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color: Colors.red,
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borderRadius: BorderRadius.circular(30),
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boxShadow: [
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BoxShadow(
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blurRadius: 6,
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offset: Offset(0, 3),
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color: Color(0xFFF24160),
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)
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],
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gradient: LinearGradient(
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colors: [
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Color(0xFFFFEAA8),
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Color(0xFFFFD67A),
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Color(0xFFFFD16F),
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],
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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),
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),
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height: 40 * 2.h,
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width: rSize(265),
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child: Center(
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child: Text(
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_isShowResult
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? widget.bingoType == 0
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? '好遗憾 没中奖'
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: '立即领取'
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: '天天好运',
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style: TextStyle(
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color: Color(0xFFCE1F3D),
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fontSize: 16 * 2.sp,
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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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_buildBackLayer() {
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VoidCallback _onTap = () {
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if (widget.beforeBack != null) widget.beforeBack();
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Navigator.pop(context);
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};
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return widget.inkWell
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? InkWell(onTap: _onTap)
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: GestureDetector(onTap: _onTap);
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}
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_buildChild() {
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var mediaWidth = MediaQuery.of(context).size.width;
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return Center(
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child: AnimatedContainer(
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width: mediaWidth - 50,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(5),
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// color: _backgroundDarkMask ? Colors.black26 : Colors.transparent,
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),
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duration: Duration(milliseconds: 300),
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child: GridView.builder(
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padding: EdgeInsets.only(
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top: 35,
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left: 8,
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right: 8,
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bottom: 35,
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),
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shrinkWrap: true,
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physics: NeverScrollableScrollPhysics(),
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gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: widget.rowSize,
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crossAxisSpacing: widget.spacing,
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childAspectRatio: widget.aspectRatio,
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),
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itemBuilder: (BuildContext context, int index) {
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return Container(
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padding: EdgeInsets.only(bottom: 10),
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child: _buildCard(index),
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);
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},
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itemCount: result.length,
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),
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),
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);
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}
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_buildCard(int index) {
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return Stack(
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children: <Widget>[
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FlipCard(
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speed: widget.flipDuration.inMilliseconds,
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key: _cardKeys[index],
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front: result[index].cardFaceFront,
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back: result[index].cardFaceBack,
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),
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Positioned(
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right: 0,
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left: 0,
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top: 0,
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bottom: 0,
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child: AnimatedContainer(
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duration: widget.animationDuration,
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color: _cardState[index] ? Colors.transparent : Colors.black54,
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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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