designhubz 0.0.4

DesignHubz TryOn Flutter Package

example/lib/main.dart

import 'package:designhubz/designhubz.dart';
import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';

Future main() async {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(
    const MaterialApp(home: DesignHubzDemo()),
  );
}

class DesignHubzDemo extends StatefulWidget {
  const DesignHubzDemo({super.key});

  @override
  State<DesignHubzDemo> createState() => _DesignHubzDemoState();
}

class _DesignHubzDemoState extends State<DesignHubzDemo> {
  /// Once the [TryOnWidget] is ready, it will provide the [TryOnController]
  /// through its [onTryOnReady] callback, you can use this controller to set
  /// userId, load product, switch context, take snapshot and fetch recommendations
  late TryOnController _tryOnController;

  /// In this example, [TryOnWidget] will not be shown until camera
  /// permission is granted
  bool isCameraPermissionGranted = false;

  /// In this example, we are using a dummy user id and product id,
  /// make sure to use your own user id and product id
  String userId = "1234";
  String productId = "000241-2906";

  final List<String> statusUpdates = [];

  /// [TryOnWidget] have many callbacks for different statuses like [onUpdateTrackingStatus]
  /// and [onUserUpdateInfo] which we are showing above the [TryOnWidget] in this example
  void addStatusUpdate(String status) {
    setState(() {
      statusUpdates.insert(0, status);
    });
  }

  @override
  void initState() {
    _checkForCameraPermission();
    super.initState();
  }

  /// before starting the [TryOnWidget] try-on mode, make sure to check for camera permission
  /// and request for permission if not granted using [permission_handler](https://pub.dev/packages/permission_handler)
  /// or any other such package package
  _checkForCameraPermission() async {
    final status = await Permission.camera.status;
    if (status.isGranted) {
      setState(() {
        isCameraPermissionGranted = true;
      });
    } else {
      final result = await Permission.camera.request();
      setState(() {
        isCameraPermissionGranted = result.isGranted;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Try-On Example'),
      ),
      body: Stack(
        children: [
          Builder(builder: (context) {
            if (!isCameraPermissionGranted) {
              return const Center(
                child: Padding(
                  padding: EdgeInsets.all(16.0),
                  child: Text(
                    'Camera Permission is required to use Try-On',
                    style: TextStyle(fontSize: 20),
                  ),
                ),
              );
            }
            return SafeArea(
              child: Container(
                decoration: BoxDecoration(
                  border: Border.all(color: Colors.black, width: 3),
                ),
                child: TryOnWidget(
                  /// make sure to provided your own organization id
                  organizationId: "23049412",

                  /// all these callbacks provide different statuses updates
                  /// In this example, we are showing it in UI through [buildStatusUpdatesWidget()]
                  onUpdateTrackingStatus: (trackingStatus) {
                    addStatusUpdate("Tracking Status: $trackingStatus");
                  },
                  onUpdateTryOnStatus: (tryOnStatus) {
                    addStatusUpdate("TryOn Status: $tryOnStatus");
                  },
                  onUpdateUserInfo: (userInfo) {
                    addStatusUpdate("User Info: $userInfo");
                  },
                  onError: (error) {
                    addStatusUpdate("Error: $error");
                  },

                  /// [onTryOnReady] will be called once the [TryOnWidget] is ready
                  onTryOnReady: (controller) {
                    /// save the controller for later use, see buttons in bottom of
                    /// the page for its usage
                    _tryOnController = controller;
                  },
                ),
              ),
            );
          }),

          /// show the status updates in bottom of the page
          Align(
            alignment: Alignment.bottomCenter,
            child: SizedBox(
              height: MediaQuery.of(context).size.height / 5,
              child: buildStatusUpdatesWidget(),
            ),
          ),
          // uncomment to show memory overlay
          // buildMemoryOverlay(),
        ],
      ),
      bottomNavigationBar: SafeArea(
        child: Container(
          padding: const EdgeInsets.all(8.0),
          height: 60,
          child: ListView(
            scrollDirection: Axis.horizontal,

            /// buttons to call different methods of [TryOnController]
            children: [
              buildSetUserIdWidgetButton(),
              buildLoadProductButton(),
              buildSwitchModeButton(),
              buildRecommendationButton(),
              buildTakeSnapshotButton(),
            ],
          ),
        ),
      ),
    );
  }

  /// Sets the identifier that can pair with your user stats.
  /// show a [SnackBar] to indicate success or failure
  Widget buildSetUserIdWidgetButton() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8.0),
      child: ElevatedButton(
        onPressed: () async {
          showDialog(
              context: context,
              builder: (context) {
                return AlertDialog(
                    content: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    TextFormField(
                      initialValue: userId,
                      onChanged: (value) async {
                        userId = value;
                      },
                    ),
                    const SizedBox(height: 10),
                    ElevatedButton(
                        onPressed: () async {
                          try {
                            await _tryOnController.setUserId(userId);
                            if (mounted) {
                              Navigator.pop(context);
                              ScaffoldMessenger.of(context).showSnackBar(
                                const SnackBar(
                                  content: Text("User ID Set Successfully"),
                                ),
                              );
                            }
                          } catch (e) {
                            ScaffoldMessenger.of(context).showSnackBar(
                                SnackBar(content: Text("Error:$e")));
                          }
                        },
                        child: const Text('Set User Id')),
                  ],
                ));
              });
        },
        child: const Text('Set User Id'),
      ),
    );
  }

  /// load the product defined by [productId]
  /// show a [SnackBar] to indicate loaded product detail or failure
  Widget buildLoadProductButton() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8.0),
      child: ElevatedButton(
        onPressed: () async {
          showDialog(
              context: context,
              builder: (context) {
                return AlertDialog(
                    content: Column(
                  mainAxisSize: MainAxisSize.min,
                  children: [
                    TextFormField(
                      initialValue: productId,
                      onChanged: (value) async {
                        productId = value;
                      },
                    ),
                    const SizedBox(height: 10),
                    ElevatedButton(
                        onPressed: () async {
                          try {
                            final loadedProduct =
                                await _tryOnController.loadProduct(productId);
                            if (mounted) {
                              Navigator.pop(context);
                              ScaffoldMessenger.of(context).showSnackBar(
                                SnackBar(
                                    content: Text(
                                        "Product Loaded Successfully $loadedProduct")),
                              );
                            }
                          } catch (e) {
                            ScaffoldMessenger.of(context).showSnackBar(
                                SnackBar(content: Text("Error:$e")));
                          }
                        },
                        child: const Text('Load Product')),
                  ],
                ));
              });
        },
        child: const Text('Load Product'),
      ),
    );
  }

  /// Change the displayed mode from 3D to Eyewear Tryon
  /// show a [SnackBar] to indicate switched mode or failure
  Widget buildSwitchModeButton() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8.0),
      child: ElevatedButton(
        onPressed: () async {
          try {
            final switchedMode = await _tryOnController.switchMode();
            if (mounted) {
              ScaffoldMessenger.of(context).showSnackBar(
                SnackBar(
                  content: Text("Mode Switched $switchedMode"),
                ),
              );
            }
          } catch (e) {
            ScaffoldMessenger.of(context)
                .showSnackBar(SnackBar(content: Text("Error:$e")));
          }
        },
        child: const Text('Switch Mode'),
      ),
    );
  }

  /// Get recommendations related to product
  /// this widget show recommendations in a [Dialog]
  Widget buildRecommendationButton() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8.0),
      child: ElevatedButton(
        onPressed: () async {
          showDialog(
              context: context,
              builder: (context) {
                return AlertDialog(
                  content: FutureBuilder(
                    future: _tryOnController.fetchRecommendations(3),
                    builder: (context, snapshot) {
                      if (snapshot.hasData) {
                        if (snapshot.hasError) {
                          return Text("Error:${snapshot.error}");
                        }
                        final recommendations = snapshot.data;
                        if (recommendations == null ||
                            recommendations.isEmpty) {
                          return const Text("No Recommendations");
                        }
                        return Column(
                          mainAxisSize: MainAxisSize.min,
                          children: recommendations
                              .map((e) => Text(e.toString()))
                              .toList(),
                        );
                      } else {
                        return const Text(
                          "Loading...",
                          textAlign: TextAlign.center,
                        );
                      }
                    },
                  ),
                );
              });
        },
        child: const Text('Recommendations'),
      ),
    );
  }

  /// Take a snapshot of what is currently displayed in [TryOnWidget]
  /// show a [Dialog] to show the captured image
  Widget buildTakeSnapshotButton() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 8.0),
      child: ElevatedButton(
        onPressed: () async {
          showDialog(
              context: context,
              builder: (context) {
                return AlertDialog(
                  content: FutureBuilder(
                    future: _tryOnController.takeSnapshot(),
                    builder: (context, snapshot) {
                      if (snapshot.hasData) {
                        if (snapshot.hasError) {
                          return Text("Error:${snapshot.error}");
                        }
                        final image = snapshot.data;
                        if (image == null) {
                          return const Text("No image captured");
                        }

                        /// after getting the snapshot, you can show it in the UI
                        /// through [Image.memory] like here, or upload it somewhere
                        return Image.memory(image);
                      } else {
                        return const Text(
                          "Loading...",
                          textAlign: TextAlign.center,
                        );
                      }
                    },
                  ),
                );
              });
        },
        child: const Text('Take Snapshot'),
      ),
    );
  }

  /// show status updates in a [ListView] from [TryOnWidget] callbacks
  Widget buildStatusUpdatesWidget() {
    return Container(
      color: Colors.black.withOpacity(0.2),
      child: ListView(
        children: statusUpdates
            .map(
              (e) => Text(
                e,
                style: const TextStyle(color: Colors.white),
              ),
            )
            .toList(),
      ),
    );
  }

  /// (Android only) show available memory and if device is low on
  /// memory. Useful to evaluate TryOn on low-end devices
  /// **not** a requirement to use [TryOnWidget]
  Widget buildMemoryOverlay() {
    return Align(
      alignment: Alignment.topRight,
      child: StreamBuilder(
        stream: Stream.periodic(const Duration(seconds: 1)),
        builder: (context, snapshot) {
          return FutureBuilder(
            future: TryonHelpers.getAndroidMemoryInfo(),
            builder: (context, snapshot) {
              if (snapshot.hasData) {
                final memInfo = snapshot.data;
                if (memInfo == null) return Container();
                return Container(
                  color: Colors.white.withOpacity(0.5),
                  child: Padding(
                    padding: const EdgeInsets.all(8.0),
                    child: Text(
                      "Available Memory: ${memInfo.availableMemoryInMB} MB\nIs Low On Memory: ${memInfo.isLowOnMemory}",
                    ),
                  ),
                );
              } else {
                return Container();
              }
            },
          );
        },
      ),
    );
  }
}