watermark_img 0.0.1

Simply add watermark to image

example/lib/main.dart

import 'dart:io';
import 'dart:typed_data';

import 'package:device_info_plus/device_info_plus.dart';
import 'package:flutter/material.dart';
import 'package:image_gallery_saver/image_gallery_saver.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:watermark_img/watermark_img.dart';

void main() {
  runApp(MaterialApp(
    theme: ThemeData(useMaterial3: false),
    debugShowCheckedModeBanner: false,
    home: const MyApp(),
  ));
}

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

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  XFile? fileImage;

  Future<bool> _requestStoragePermission() async {
    if (await Permission.storage.isGranted) {
      return true;
    } else {
      var status = await Permission.storage.request();
      return status.isGranted;
    }
  }

  Future<bool> _requestPhotosPermission() async {
    if (await Permission.photos.isGranted) {
      return true;
    } else {
      var status = await Permission.photos.request();
      return status.isGranted;
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SingleChildScrollView(
        child: SafeArea(
          child: Column(
            children: [
              ScreenWatermark(
                  child: Stack(
                children: [
                  Image.network(
                    'https://randomuser.me/api/portraits/men/60.jpg',
                    fit: BoxFit.cover,
                    width: double.infinity,
                    height: 300,
                  ),
                  const Center(
                    child: Text(
                      'Watermark',
                      style: TextStyle(
                        fontSize: 30,
                        color: Colors.red,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                ],
              )),
              ElevatedButton(
                  onPressed: () async {
                    final Uint8List bytes = await WaterMarkImg.convertImgToUint(
                        renderKey: KeyWatermark().key);
                    final File? file = await WaterMarkImg()
                        .saveImageFromUint8List(bytes, 'watermark.png');

                    setState(() {
                      fileImage = XFile(file!.path);
                    });
                    if (file != null) {
                      if (Platform.isAndroid) {
                        final deviceInfo = DeviceInfoPlugin();
                        final androidSdk = await deviceInfo.androidInfo;
                        if (androidSdk.version.sdkInt >= 33) {
                          if (await _requestPhotosPermission()) {
                            final directory = await getTemporaryDirectory();
                            final file =
                                File('${directory.path}/watermark.png');
                            await file.writeAsBytes(bytes);
                            final result =
                                await ImageGallerySaver.saveImage(bytes);
                            if (result != null) {
                              print('Image saved');
                              fileImage = XFile(file.path);
                            }
                          }
                        } else {
                          if (await _requestStoragePermission()) {
                            final directory = await getTemporaryDirectory();
                            final file =
                                File('${directory.path}/watermark.png');
                            await file.writeAsBytes(bytes);
                            final result =
                                await ImageGallerySaver.saveFile(file.path);
                            if (result != null) {
                              print('Image saved');
                              fileImage = XFile(file.path);
                            }
                          }
                        }
                      } else if (Platform.isIOS) {
                        final directory = await getTemporaryDirectory();
                        final file = File('${directory.path}/watermark.png');
                        await file.writeAsBytes(bytes);
                        final result = await ImageGallerySaver.saveImage(bytes);
                        if (result != null) {
                          print('Image saved');
                          fileImage = XFile(file.path);
                        }
                      }
                    } else {}
                  },
                  child: const Text("Check Image + Save")),
              fileImage != null
                  ? Image.file(
                      File(fileImage!.path),
                      width: 300,
                      height: 300,
                    )
                  : const Text("No Image Found"),
            ],
          ),
        ),
      ),
    );
  }
}