tsacdop-podcast-app-android/lib/home/audioplayer.dart

1076 lines
41 KiB
Dart

import 'dart:io';
import 'dart:ui' as ui;
import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:marquee/marquee.dart';
import 'package:line_icons/line_icons.dart';
import 'package:tuple/tuple.dart';
import 'package:audio_service/audio_service.dart';
import 'package:tsacdop/class/episodebrief.dart';
import 'package:tsacdop/class/audiostate.dart';
import 'package:tsacdop/episodes/episodedetail.dart';
import 'package:tsacdop/home/audiopanel.dart';
import 'package:tsacdop/util/pageroute.dart';
import 'package:tsacdop/util/colorize.dart';
import 'package:tsacdop/util/day_night_switch.dart';
//Custom slider
class MyRectangularTrackShape extends RectangularSliderTrackShape {
Rect getPreferredRect({
@required RenderBox parentBox,
Offset offset = Offset.zero,
@required SliderThemeData sliderTheme,
bool isEnabled = false,
bool isDiscrete = false,
}) {
final double trackHeight = sliderTheme.trackHeight;
final double trackLeft = offset.dx;
final double trackTop =
offset.dy + (parentBox.size.height - trackHeight) / 2;
final double trackWidth = parentBox.size.width;
return Rect.fromLTWH(trackLeft - 5, trackTop, trackWidth, trackHeight);
}
}
class MyRoundSliderThumpShape extends SliderComponentShape {
const MyRoundSliderThumpShape({
this.enabledThumbRadius = 10.0,
this.disabledThumbRadius,
this.thumbCenterColor,
});
final Color thumbCenterColor;
final double enabledThumbRadius;
final double disabledThumbRadius;
double get _disabledThumbRadius => disabledThumbRadius ?? enabledThumbRadius;
@override
Size getPreferredSize(bool isEnabled, bool isDiscrete) {
return Size.fromRadius(
isEnabled == true ? enabledThumbRadius : _disabledThumbRadius);
}
@override
void paint(
PaintingContext context,
Offset center, {
Animation<double> activationAnimation,
@required Animation<double> enableAnimation,
bool isDiscrete,
TextPainter labelPainter,
RenderBox parentBox,
@required SliderThemeData sliderTheme,
TextDirection textDirection,
double value,
}) {
final Canvas canvas = context.canvas;
final Tween<double> radiusTween = Tween<double>(
begin: _disabledThumbRadius,
end: enabledThumbRadius,
);
final ColorTween colorTween = ColorTween(
begin: sliderTheme.disabledThumbColor,
end: sliderTheme.thumbColor,
);
canvas.drawCircle(
center,
radiusTween.evaluate(enableAnimation),
Paint()
..color = thumbCenterColor
..style = PaintingStyle.fill
..strokeWidth = 2,
);
canvas.drawRect(
Rect.fromLTRB(
center.dx - 10, center.dy + 10, center.dx + 10, center.dy - 10),
Paint()
..color = colorTween.evaluate(enableAnimation)
..style = PaintingStyle.fill
..strokeWidth = 10,
);
canvas.drawLine(
Offset(center.dx - 5, center.dy - 2),
Offset(center.dx + 5, center.dy + 2),
Paint()
..color = Colors.transparent
..style = PaintingStyle.fill
..strokeWidth = 2,
);
}
}
class PlayerWidget extends StatefulWidget {
@override
_PlayerWidgetState createState() => _PlayerWidgetState();
}
class _PlayerWidgetState extends State<PlayerWidget> {
static String _stringForSeconds(double seconds) {
if (seconds == null) return null;
return '${(seconds ~/ 60)}:${(seconds.truncate() % 60).toString().padLeft(2, '0')}';
}
List minsToSelect = [1, 5, 10, 15, 20, 25, 30, 45, 60, 70, 80, 90, 99];
int _minSelected;
@override
void initState() {
super.initState();
_minSelected = 30;
}
@override
void didUpdateWidget(Widget oldWidget) {
super.didUpdateWidget(oldWidget);
}
Widget _sleppMode(BuildContext context) {
var audio = Provider.of<AudioPlayerNotifier>(context, listen: false);
return Selector<AudioPlayerNotifier, Tuple3<bool, int, double>>(
selector: (_, audio) =>
Tuple3(audio.showStopWatch, audio.timeLeft, audio.switchValue),
builder: (_, data, __) {
// if (!data.item1 && _outValue == 1) _outValue = 0;
return Container(
height: 300,
color: data.item3 > 0
? Colors.black.withOpacity(data.item3)
: Theme.of(context).scaffoldBackgroundColor,
child: Stack(
children: <Widget>[
Column(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Padding(
padding: EdgeInsets.all(5),
),
SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
crossAxisAlignment: CrossAxisAlignment.center,
children: minsToSelect
.map((e) => InkWell(
onTap: () => setState(() => _minSelected = e),
child: Stack(
alignment: Alignment.center,
children: <Widget>[
AnimatedContainer(
duration: Duration(milliseconds: 300),
curve: Curves.elasticOut,
margin: EdgeInsets.symmetric(
horizontal: 10.0),
decoration: BoxDecoration(
boxShadow: [
BoxShadow(
color: Colors.grey[800],
blurRadius: 0,
offset: Offset(0, 0)),
],
color: (e == _minSelected)
? Theme.of(context).accentColor
: Colors.grey[400],
shape: BoxShape.circle,
),
alignment: Alignment.center,
height: (e == _minSelected) ? 40 : 30,
width: (e == _minSelected) ? 40 : 30,
child: Text(e.toString(),
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.white)),
),
Container(
height: (e == _minSelected)
? 40 * data.item3
: 30 * data.item3,
width: (e == _minSelected)
? 40 * data.item3
: 30 * data.item3,
decoration: BoxDecoration(
color: Colors.black,
shape: BoxShape.circle),
),
],
),
))
.toList(),
),
),
Container(
height: 100,
alignment: Alignment.center,
child: Transform.scale(
scale: 0.5,
child: DayNightSwitch(
height: 10,
value: data.item1,
//moonImage: AssetImage('assets/moon.png'),
//sunImage: AssetImage('assets/sun.png'),
sunColor: Colors.yellow[700],
moonColor: Colors.grey[600],
dayColor: Colors.grey[300],
nightColor: Colors.black,
onDrag: (value) => audio.setSwitchValue = value,
onChanged: (value) {
if (value) {
audio.sleepTimer(_minSelected);
} else {
audio.cancelTimer();
}
},
),
),
),
Container(
height: 70,
alignment: Alignment.center,
child: Column(
children: <Widget>[
Container(
alignment: Alignment.center,
height: 25,
width: 100,
decoration: BoxDecoration(
// color: Theme.of(context).accentColor,
),
child: Text(_stringForSeconds(data.item2.toDouble()),
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 20,
color: data.item1
? Colors.white
: Colors.black)),
),
],
),
),
],
),
Positioned(
bottom: 60 + 20 * data.item3,
left: MediaQuery.of(context).size.width / 2 - 100,
width: 200,
child: Container(
alignment: Alignment.center,
child: Text('Good Night',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 20,
color: Colors.white.withOpacity(data.item3))),
),
),
Positioned(
bottom: 100 * (1 - data.item3) - 30,
left: MediaQuery.of(context).size.width / 2 - 100,
width: 200,
child: Container(
alignment: Alignment.center,
child: Text('Sleep Timer',
style:
TextStyle(fontWeight: FontWeight.bold, fontSize: 20)),
),
),
data.item1 ? CustomPaint(painter: StarSky()) : Center(),
data.item1 ? MeteorLoader() : Center(),
],
),
);
},
);
}
Widget _controlPanel(BuildContext context) {
var audio = Provider.of<AudioPlayerNotifier>(context, listen: false);
return Container(
color: Theme.of(context).primaryColor,
height: 300,
padding: EdgeInsets.symmetric(horizontal: 10.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Consumer<AudioPlayerNotifier>(
builder: (_, data, __) {
Color _c = (Theme.of(context).brightness == Brightness.light)
? data.episode.primaryColor.colorizedark()
: data.episode.primaryColor.colorizeLight();
return Column(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
padding: EdgeInsets.only(top: 10, left: 10, right: 10),
child: SliderTheme(
data: SliderTheme.of(context).copyWith(
activeTrackColor: Colors.grey[400],
inactiveTrackColor: Colors.grey[300],
trackHeight: 20.0,
trackShape: MyRectangularTrackShape(),
thumbColor: Theme.of(context).accentColor,
thumbShape: MyRoundSliderThumpShape(
enabledThumbRadius: 10.0,
disabledThumbRadius: 10.0,
thumbCenterColor: _c),
overlayColor:
Theme.of(context).accentColor.withAlpha(32),
overlayShape:
RoundSliderOverlayShape(overlayRadius: 14.0),
),
child: Slider(
value: data.seekSliderValue,
onChanged: (double val) {
audio.sliderSeek(val);
}),
),
),
Container(
height: 20.0,
padding: EdgeInsets.symmetric(horizontal: 30.0),
child: Row(
children: <Widget>[
Text(
_stringForSeconds(
data.backgroundAudioPosition / 1000) ??
'',
style: TextStyle(fontSize: 10),
),
Expanded(
child: Container(
alignment: Alignment.center,
child: data.remoteErrorMessage != null
? Text(data.remoteErrorMessage,
style: const TextStyle(
color: const Color(0xFFFF0000)))
: Text(
data.audioState ==
BasicPlaybackState
.buffering ||
data.audioState ==
BasicPlaybackState.connecting
? 'Buffring...'
: '',
style: TextStyle(
color: Theme.of(context).accentColor),
),
),
),
Text(
_stringForSeconds(
data.backgroundAudioDuration / 1000) ??
'',
style: TextStyle(fontSize: 10),
),
],
),
),
],
);
},
),
Container(
height: 100,
child: Selector<AudioPlayerNotifier, BasicPlaybackState>(
selector: (_, audio) => audio.audioState,
builder: (_, backplay, __) {
return Material(
color: Colors.transparent,
child: Row(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: [
IconButton(
padding: EdgeInsets.symmetric(horizontal: 30.0),
onPressed: backplay == BasicPlaybackState.playing
? () => audio.forwardAudio(-10)
: null,
iconSize: 32.0,
icon: Icon(Icons.replay_10),
color: Colors.grey[500]),
backplay == BasicPlaybackState.playing
? IconButton(
padding: EdgeInsets.symmetric(horizontal: 30.0),
onPressed:
backplay == BasicPlaybackState.playing
? () {
audio.pauseAduio();
}
: null,
iconSize: 60.0,
icon: Icon(
LineIcons.pause_circle,
size: 40,
),
color: Colors.grey[500])
: IconButton(
padding: EdgeInsets.symmetric(horizontal: 30.0),
onPressed:
backplay == BasicPlaybackState.playing
? null
: () {
audio.resumeAudio();
},
iconSize: 60.0,
icon: Icon(LineIcons.play_circle, size: 40),
color: Colors.grey[500]),
IconButton(
padding: EdgeInsets.symmetric(horizontal: 30.0),
onPressed: backplay == BasicPlaybackState.playing
? () => audio.forwardAudio(30)
: null,
iconSize: 32.0,
icon: Icon(Icons.forward_30),
color: Colors.grey[500]),
],
),
);
},
),
),
Container(
height: 70.0,
padding: EdgeInsets.all(20),
alignment: Alignment.center,
child: Selector<AudioPlayerNotifier, String>(
selector: (_, audio) => audio.episode.title,
builder: (_, title, __) {
return Container(
child: LayoutBuilder(
builder: (context, size) {
var span = TextSpan(
text: title,
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 20));
var tp = TextPainter(
text: span,
maxLines: 1,
textDirection: TextDirection.ltr);
tp.layout(maxWidth: size.maxWidth);
if (tp.didExceedMaxLines) {
return Marquee(
text: title,
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 18),
scrollAxis: Axis.horizontal,
crossAxisAlignment: CrossAxisAlignment.start,
blankSpace: 30.0,
velocity: 50.0,
pauseAfterRound: Duration(seconds: 1),
startPadding: 30.0,
accelerationDuration: Duration(seconds: 1),
accelerationCurve: Curves.linear,
decelerationDuration: Duration(milliseconds: 500),
decelerationCurve: Curves.easeOut,
);
} else {
return Text(
title,
style: TextStyle(
fontWeight: FontWeight.bold, fontSize: 20),
);
}
},
),
);
},
),
),
Spacer(),
Selector<AudioPlayerNotifier, Tuple3<EpisodeBrief, bool, bool>>(
selector: (_, audio) => Tuple3(
audio.episode, audio.stopOnComplete, audio.showStopWatch),
builder: (_, data, __) {
return Container(
padding: EdgeInsets.all(12.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Padding(
padding: EdgeInsets.all(5.0),
),
Container(
height: 30.0,
width: 30.0,
child: CircleAvatar(
backgroundImage:
FileImage(File("${data.item1.imagePath}")),
),
),
Spacer(),
IconButton(
onPressed: () => Navigator.push(
context,
SlideUptRoute(
page: EpisodeDetail(
episodeItem: data.item1,
heroTag: 'playpanel')),
),
icon: Icon(Icons.info),
),
],
),
);
},
),
]),
);
}
Widget _playlist(BuildContext context) {
var audio = Provider.of<AudioPlayerNotifier>(context, listen: false);
return Container(
alignment: Alignment.bottomLeft,
child: AnimatedContainer(
duration: Duration(milliseconds: 400),
height: 300,
width: MediaQuery.of(context).size.width,
alignment: Alignment.center,
// margin: EdgeInsets.all(20),
//padding: EdgeInsets.only(bottom: 10.0),
decoration: BoxDecoration(
// borderRadius: BorderRadius.all(Radius.circular(10.0)),
color: Theme.of(context).scaffoldBackgroundColor,
),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Container(
height: 50,
padding: EdgeInsets.symmetric(horizontal: 20.0),
alignment: Alignment.center,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(
'NEXT TO PLAY',
style: TextStyle(
color: Theme.of(context).accentColor,
fontWeight: FontWeight.bold),
),
Spacer(),
],
),
),
),
Expanded(
child: Selector<AudioPlayerNotifier, List<EpisodeBrief>>(
selector: (_, audio) => audio.queue.playlist,
builder: (_, playlist, __) {
return ListView.builder(
shrinkWrap: true,
scrollDirection: Axis.vertical,
itemCount: playlist.length,
itemBuilder: (BuildContext context, int index) {
print(playlist.length);
return index == 0
? Center()
: Column(
children: <Widget>[
Material(
color: Colors.transparent,
child: InkWell(
onTap: () {
audio.episodeLoad(playlist[index]);
},
child: Container(
height: 60,
padding:
EdgeInsets.symmetric(horizontal: 10),
alignment: Alignment.centerLeft,
// decoration: BoxDecoration(
// color: Theme.of(context)
// .scaffoldBackgroundColor,
// ),
child: Row(
mainAxisAlignment:
MainAxisAlignment.center,
crossAxisAlignment:
CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
padding: EdgeInsets.all(10.0),
child: ClipRRect(
borderRadius: BorderRadius.all(
Radius.circular(15.0)),
child: Container(
height: 30.0,
width: 30.0,
child: Image.file(File(
"${playlist[index].imagePath}"))),
),
),
Expanded(
child: Container(
alignment: Alignment.centerLeft,
child: Text(
playlist[index].title,
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
),
),
],
),
),
),
),
Divider(height: 2),
],
);
},
);
},
),
),
],
),
),
);
}
Widget _expandedPanel(BuildContext context) {
return DefaultTabController(
initialIndex: 1,
length: 3,
child: Stack(
children: <Widget>[
TabBarView(
children: <Widget>[
_sleppMode(context),
_controlPanel(context),
_playlist(context),
],
),
Positioned(
bottom: 10,
left: MediaQuery.of(context).size.width / 2 - 25,
child: Container(
alignment: Alignment.center,
width: 50.0,
height: 10.0,
//color: Colors.blue,
child: TabBar(
labelPadding: EdgeInsets.only(top: 0),
indicatorPadding: EdgeInsets.all(0),
indicatorSize: TabBarIndicatorSize.tab,
indicatorWeight: 0,
indicator: BoxDecoration(
shape: BoxShape.circle,
color: Theme.of(context).accentColor,
),
tabs: <Widget>[
Container(
// child: Text('p'),
height: 10.0,
width: 10.0,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.transparent,
border: Border.all(
color: Theme.of(context).accentColor,
width: 2.0)),
),
Container(
height: 10.0,
width: 10.0,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.transparent,
border: Border.all(
color: Theme.of(context).accentColor,
width: 2.0)),
),
Container(
height: 10.0,
width: 10.0,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.transparent,
border: Border.all(
color: Theme.of(context).accentColor,
width: 2.0)),
),
]),
),
),
],
),
);
}
Widget _miniPanel(double width, BuildContext context) {
var audio = Provider.of<AudioPlayerNotifier>(context, listen: false);
return Container(
decoration: BoxDecoration(
color: Theme.of(context).primaryColor,
),
height: 60,
child:
Column(mainAxisAlignment: MainAxisAlignment.start, children: <Widget>[
Selector<AudioPlayerNotifier, Tuple2<String, double>>(
selector: (_, audio) =>
Tuple2(audio.episode?.primaryColor, audio.seekSliderValue),
builder: (_, data, __) {
Color _c = (Theme.of(context).brightness == Brightness.light)
? data.item1.colorizedark()
: data.item1.colorizeLight();
return SizedBox(
height: 2,
child: LinearProgressIndicator(
value: data.item2,
backgroundColor: Theme.of(context).primaryColor,
valueColor: AlwaysStoppedAnimation<Color>(_c),
));
},
),
Expanded(
child: Container(
padding: EdgeInsets.only(left: 15, right: 10),
alignment: Alignment.center,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Expanded(
flex: 4,
child: Selector<AudioPlayerNotifier, String>(
selector: (_, audio) => audio.episode.title,
builder: (_, title, __) {
return Text(
title,
style: TextStyle(fontWeight: FontWeight.bold),
maxLines: 2,
overflow: TextOverflow.clip,
);
},
),
),
Expanded(
flex: 2,
child: Selector<AudioPlayerNotifier,
Tuple2<BasicPlaybackState, double>>(
selector: (_, audio) => Tuple2(
audio.audioState,
(audio.backgroundAudioDuration -
audio.backgroundAudioPosition) /
1000),
builder: (_, data, __) {
return Container(
padding: EdgeInsets.symmetric(horizontal: 10),
alignment: Alignment.center,
child: data.item1 == BasicPlaybackState.buffering ||
data.item1 == BasicPlaybackState.connecting
? Text(
'Buffring...',
style: TextStyle(
color: Theme.of(context).accentColor),
)
: Row(
children: <Widget>[
Text(
_stringForSeconds(data.item2) ?? '',
),
Text(
' Left',
),
],
),
);
},
),
),
Expanded(
flex: 2,
child: Selector<AudioPlayerNotifier, BasicPlaybackState>(
selector: (_, audio) => audio.audioState,
builder: (_, audioplay, __) {
return Row(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
audioplay == BasicPlaybackState.playing
? InkWell(
onTap:
audioplay == BasicPlaybackState.playing
? () {
audio.pauseAduio();
}
: null,
child: ImageRotate(
title: audio.episode.title,
path: audio.episode.imagePath),
)
: InkWell(
onTap:
audioplay == BasicPlaybackState.playing
? null
: () {
audio.resumeAudio();
},
child: Stack(
alignment: Alignment.center,
children: <Widget>[
Container(
padding: EdgeInsets.all(10.0),
child: Container(
height: 30.0,
width: 30.0,
child: CircleAvatar(
backgroundImage: FileImage(File(
"${audio.episode.imagePath}")),
)),
),
Container(
height: 50.0,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.black),
),
Icon(
Icons.play_arrow,
color: Colors.white,
)
],
),
),
IconButton(
onPressed: () => audio.playNext(),
iconSize: 25.0,
icon: Icon(Icons.skip_next),
color:
Theme.of(context).tabBarTheme.labelColor),
],
);
}),
),
],
),
),
),
]),
);
}
@override
Widget build(BuildContext context) {
double _width = MediaQuery.of(context).size.width;
return Selector<AudioPlayerNotifier, bool>(
selector: (_, audio) => audio.playerRunning,
builder: (_, playerrunning, __) {
return !playerrunning
? Center()
: AudioPanel(
miniPanel: _miniPanel(_width, context),
expandedPanel: _expandedPanel(context));
},
);
}
}
class ImageRotate extends StatefulWidget {
final String title;
final String path;
ImageRotate({this.title, this.path, Key key}) : super(key: key);
@override
_ImageRotateState createState() => _ImageRotateState();
}
class _ImageRotateState extends State<ImageRotate>
with SingleTickerProviderStateMixin {
Animation _animation;
AnimationController _controller;
double _value;
@override
void initState() {
super.initState();
_value = 0;
_controller = AnimationController(
vsync: this,
duration: Duration(milliseconds: 2000),
);
_animation = Tween(begin: 0.0, end: 1.0).animate(_controller)
..addListener(() {
if (mounted)
setState(() {
_value = _animation.value;
});
});
_controller.forward();
_controller.addStatusListener((status) {
if (status == AnimationStatus.completed) {
_controller.reset();
} else if (status == AnimationStatus.dismissed) {
_controller.forward();
}
});
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Transform.rotate(
angle: 2 * math.pi * _value,
child: Container(
padding: EdgeInsets.all(10.0),
child: ClipRRect(
borderRadius: BorderRadius.all(Radius.circular(15.0)),
child: Container(
height: 30.0,
width: 30.0,
color: Colors.white,
child: Image.file(File("${widget.path}")),
),
),
),
);
}
}
class StarSky extends CustomPainter {
@override
void paint(Canvas canvas, Size size) {
final points = [
Offset(50, 100),
Offset(150, 75),
Offset(250, 250),
Offset(130, 200),
Offset(270, 150),
];
final pisces = [
Offset(9, 4),
Offset(11, 5),
Offset(7, 6),
Offset(10, 7),
Offset(8, 8),
Offset(9, 13),
Offset(12, 17),
Offset(5, 19),
Offset(7, 19)
].map((e) => e * 10).toList();
final orion = [
Offset(3, 1),
Offset(6, 1),
Offset(1, 4),
Offset(2, 4),
Offset(2, 7),
Offset(10, 8),
Offset(3, 10),
Offset(8, 10),
Offset(19, 11),
Offset(11, 13),
Offset(18, 14),
Offset(5, 19),
Offset(7, 19),
Offset(9, 18),
Offset(15, 19),
Offset(16, 18),
Offset(2, 25),
Offset(10, 26)
].map((e) => Offset(e.dx * 10 + 250, e.dy * 10)).toList();
Paint paint = Paint()
..color = Colors.white
..strokeWidth = 2.0
..strokeCap = StrokeCap.round;
canvas.drawPoints(ui.PointMode.points, pisces, paint);
canvas.drawPoints(ui.PointMode.points, points, paint);
canvas.drawPoints(ui.PointMode.points, orion, paint);
}
@override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}
class Meteor extends CustomPainter {
Paint _paint;
Meteor() {
_paint = Paint()
..color = Colors.white
..strokeWidth = 2.0
..strokeCap = StrokeCap.round;
}
@override
void paint(Canvas canvas, Size size) {
canvas.drawLine(Offset(0, 0), Offset(size.width, size.height), _paint);
}
@override
bool shouldRepaint(Meteor oldDelegate) {
return false;
}
}
class MeteorLoader extends StatefulWidget {
@override
_MeteorLoaderState createState() => _MeteorLoaderState();
}
class _MeteorLoaderState extends State<MeteorLoader>
with SingleTickerProviderStateMixin {
double _fraction = 0.0;
double _move = 0.0;
Animation animation;
AnimationController controller;
@override
void initState() {
super.initState();
controller =
AnimationController(vsync: this, duration: Duration(milliseconds: 500));
animation = Tween(begin: 0.0, end: 1.0).animate(controller)
..addListener(() {
if (mounted)
setState(() {
_move = animation.value;
if (animation.value <= 0.5) {
_fraction = animation.value * 2;
} else {
_fraction = 2 - (animation.value) * 2;
}
});
});
controller.forward();
// controller.addStatusListener((status) {
// if (status == AnimationStatus.completed) {
// controller.reset();
// } else if (status == AnimationStatus.dismissed) {
// controller.forward();
// }
// });
}
@override
void dispose() {
controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Positioned(
top: 300 * _move + 10,
left: 150 * _move + 50,
child: SizedBox(
width: 50 * _fraction,
height: 100 * _fraction,
child: CustomPaint(painter: Meteor())),
);
}
}