120 lines
3.5 KiB
Dart
120 lines
3.5 KiB
Dart
import "package:flutter/material.dart";
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import "dart:async";
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import "../../models/user_model.dart";
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import "../../blocs/heartbeat_bloc.dart";
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class UserAvatar extends StatefulWidget {
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final User user;
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final EdgeInsetsGeometry padding;
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final double radius;
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UserAvatar(
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{@required this.user,
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this.padding: const EdgeInsets.all(0.0),
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this.radius: 20.0});
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@override
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State<StatefulWidget> createState() {
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return _UserAvatarState();
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}
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}
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class _UserAvatarState extends State<UserAvatar> {
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String lastStatus = "";
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@override
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initState() {
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super.initState();
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lastStatus = heartbeatReceiverBloc.getLastStatus(widget.user.id);
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initializeStream();
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}
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initializeStream() async {
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return Future.delayed(
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const Duration(milliseconds: 1), () => heartbeatReceiverBloc.flush());
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}
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@override
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Widget build(BuildContext context) {
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String firstName =
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(widget.user.firstName.isEmpty) ? '' : widget.user.firstName[0];
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String lastName =
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(widget.user.lastName.isEmpty) ? '' : widget.user.lastName[0];
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final colors = _stringToColor(widget.user.lastName);
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return Padding(
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padding: widget.padding,
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child: Stack(alignment: Alignment.bottomRight, children: <Widget>[
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Container(
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height: (widget.radius * 2),
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width: (widget.radius * 2),
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topRight,
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end: Alignment.bottomLeft,
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stops: [
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0,
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1
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],
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colors: [
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colors[0],
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colors[1],
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]),
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borderRadius:
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BorderRadius.all(Radius.circular(widget.radius))),
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child: Center(
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child: Text(
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firstName.toUpperCase() + lastName.toUpperCase(),
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style: Theme.of(context)
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.accentTextTheme
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.title
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.copyWith(fontSize: widget.radius / 1.4),
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),
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)),
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StreamBuilder(
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stream: heartbeatReceiverBloc.stream,
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builder: (context, AsyncSnapshot<Map<String, String>> snapshot) {
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Map<String, String> state;
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if (snapshot.hasData) {
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state = snapshot.data;
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if (state["user"] == widget.user.id) {
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this.lastStatus = state["status"];
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}
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if (lastStatus == "online") {
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return Container(
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width: 12.0,
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height: 12.0,
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decoration: BoxDecoration(
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color: Colors.green[400],
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shape: BoxShape.circle,
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border: Border.all(
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width: 1.5, color: const Color(0xFFFFFFFF))));
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}
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}
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return Container();
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}),
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]));
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}
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// Hashing username into a pastel color
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List<Color> _stringToColor(String str) {
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int hash = 0;
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str.runes.forEach((int rune) {
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hash = rune + ((hash << 5) - hash);
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});
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hash = hash % 360;
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return [
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HSLColor.fromAHSL(1.0, hash.toDouble(), 0.8, 0.4).toColor(),
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HSLColor.fromAHSL(1.0, hash.toDouble(), 0.8, 0.5).toColor()
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];
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}
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}
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