Masterarbeit/lib/pages/PageTouchPoints.dart

import 'package:flutter/material.dart';
import 'package:touch_demonstrator/ui/pageTouchPoints/AppBarPageTouchPoints.dart';
import 'package:touch_demonstrator/ui/pageTouchPoints/SideBar.dart';
import 'dart:core';
import 'package:touch_demonstrator/src/blocs/BlocProvider.dart'; //bloc:
import 'package:touch_demonstrator/ui/pageTouchPoints/ScanResultBottomSheet.dart';
import 'package:touch_demonstrator/ui/pageTouchPoints/ButtonOrAnimation.dart';
import 'package:touch_demonstrator/ui/pageTouchPoints/Logo.dart';
import 'package:touch_demonstrator/ui/pageTouchPoints/Sensor.dart';
import 'package:flutter_blue/flutter_blue.dart';
import 'package:vibrate/vibrate.dart';
import 'package:touch_demonstrator/model/vibrate.dart';

class PageTouchPoints extends StatefulWidget {
  PageTouchPoints({Key key, this.title}) : super(key: key);
  final String title;

  @override
  _PageTouchPointsState createState() => new _PageTouchPointsState();
}

class _PageTouchPointsState extends State<PageTouchPoints> {
  final GlobalKey<ScaffoldState> mScaffoldState =
      new GlobalKey<ScaffoldState>();
  static Modal modal;
  static bool firstTime = true;

  @override
  void dispose() {
    final bBloc = BlocProvider.of(context).bluetoothBlocGetter;
    bBloc.disconnect.add(null); //disconnect everything
    super.dispose();
  }

  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    print('didChangeDependencies');

    /// Manages Snackbar "no device found" and "Bluetooth off" and toggles the debugmode.
    final bBloc = BlocProvider.of(context).bluetoothBlocGetter;
    final debugBloc = BlocProvider.of(context).debugBlocGetter;

    _showSnackbar(String textInSnackBar) {
      /// Shows Snackbar for 0.5 s with String textInSnackBar in it
      print('snackbar $textInSnackBar');
      mScaffoldState.currentState.showSnackBar(SnackBar(
        content: Text(
          textInSnackBar,
          style: TextStyle(fontSize: 15),
        ),
        duration: Duration(milliseconds: 1000),
      ));
    }

    _toggleDebug(bool debugStatus) {
      vibrate(FeedbackType.success);
      _showSnackbar('Debug View: ${debugStatus ? 'enabled' : 'disabled'}!');
    }

    if (firstTime) {
      firstTime = false;
      modal = new Modal();
      bBloc.devicesFound$.listen((device) {
        if (device.length == 0) {
          print('Snackbar: No device found');
          _showSnackbar('No device found');
          vibrateDelayed(FeedbackType.warning, Duration(milliseconds: 150));
        } else {
          modal.connectBottomSheet(context, device);
        }
      });
      debugBloc.debugEnabledStatus$.listen((data) => _toggleDebug(data));

      bBloc.bluetoothState$
          .where((bluetoothState) => bluetoothState == BluetoothState.off)
          .listen(
              (bluetoothState) => _showBluetoothOffSnackbar(bluetoothState));

      bBloc.bluetoothState$
          .where((bluetoothState) => bluetoothState == BluetoothState.on)
          .listen((_) => mScaffoldState.currentState.removeCurrentSnackBar());
    } else {
      print('REMOVE current snack bar');
      mScaffoldState.currentState.removeCurrentSnackBar();
    }
  }

  _showBluetoothOffSnackbar(BluetoothState bluetoothState) {
    /// Shows Snackbar if Bluetooth is off to inform user.
    var textInSnackbar = 'Bluetooth is off!';

    print('snackbar $textInSnackbar');
    mScaffoldState.currentState.showSnackBar(SnackBar(
      backgroundColor: Colors.red,
      content: Row(
        mainAxisAlignment: MainAxisAlignment.start,
        children: <Widget>[
          Icon(Icons.warning),
          Padding(
            padding: EdgeInsets.only(left: 10.0),
            child: Text(
              textInSnackbar,
              textAlign: TextAlign.center,
              style: TextStyle(fontSize: 25),
            ),
          ),
        ],
      ),
      duration: Duration(days: 1),
    ));
  }

  @override
  Widget build(BuildContext context) {
    /// build UI for the main screen in the app
    return Scaffold(
      key: mScaffoldState,
      // necessary for toast message
      appBar: buildAppBarPageTouchPoints(context),
      drawer: LeftDrawer(),
      body: SafeArea(child: OrientationBuilder(builder: (context, orientation) {
        return _buildBody(orientation);
//        return _buildVerticalLayout();
      })),
    );
  }

  _buildBody(Orientation orientation) {
    if (orientation == Orientation.portrait)
      return _buildVerticalLayout();
    else
      return _buildHorizontalLayout();
  }

  static const _heightLogo = 100.0;

  _buildVerticalLayout() {
    /// Layout for vertical orientation
    EdgeInsets devicePadding = MediaQuery.of(context).padding;
    return Padding(
      padding: const EdgeInsets.all(5.0),
      child: Column(
        mainAxisAlignment: MainAxisAlignment.start,
        children: <Widget>[
          Container(height: devicePadding.top),
          LogoWithText(_heightLogo),
          Expanded(child: Sensor()),
          ConnectButtonWithAnimations(),
        ],
      ),
    );
  }

  _buildHorizontalLayout() {
    /// Layout for horizontal orientation
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Column(children: <Widget>[
        Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Column(
              mainAxisAlignment: MainAxisAlignment.start,
              children: <Widget>[
                LogoWithText(_heightLogo),
                ConnectButtonWithAnimations(),
              ],
            ),
            Column(
              children: <Widget>[
                Sensor(),
              ],
            ),
          ],
        ),
      ]),
    );
  }
}