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app/lib/widgets/bingo_card_widget.dart

334 lines
8.7 KiB

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