f_glitch 0.1.3

Add glitch effect and RGB shift effect to selected image and change frequency of occurrence to these effects.

example/lib/main.dart

import 'dart:typed_data';
import 'dart:ui';

import 'package:f_glitch/f_glitch.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      title: 'f_glitch sample',
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  ImageProvider _imageProvider = const AssetImage('assets/sample.jpg');
  double _glitchLevel = 1;
  double _frequency = 1000;
  double _glitchRate = 50;
  Uint8List? _exportedImageByte;
  bool _showColorShift = true;
  bool _showGlitch = true;
  bool _showScanline = false;

  void _changeGlitchLevelSlider(double e) => setState(() {
        _glitchLevel = e;
        controller.setGlitchLevel(_glitchLevel);
      });

  void _changeSlider(double e) => setState(() {
        _frequency = e;
        controller.setFrequency(_frequency.toInt());
      });

  void _changeGlitchSlider(double e) => setState(() {
        _glitchRate = e;
        controller.setGlitchRate(_glitchRate.toInt());
      });

  GlitchController controller = GlitchController();

  @override
  void dispose() {
    controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: SingleChildScrollView(
          child: Column(children: [
            SizedBox(
              width: 300,
              child: FGlitch(
                imageProvider: _imageProvider,
                controller: controller,
              ),
            ),
            const SizedBox(
              height: 10,
            ),
            Row(children: <Widget>[
              ElevatedButton(
                onPressed: () {
                  setState(() {
                    _imageProvider = const AssetImage('assets/sample.jpg');
                  });
                },
                child: const Text('local image'),
              ),
              const SizedBox(
                width: 10,
              ),
              ElevatedButton(
                onPressed: () {
                  setState(() {
                    _imageProvider = const NetworkImage(
                        "https://source.unsplash.com/M6ule9BFwYg");
                  });
                },
                child: const Text('network image'),
              ),
            ]),
            const SizedBox(
              height: 10,
            ),
            Row(children: [
              ElevatedButton(
                onPressed: () {
                  controller.play();
                },
                child: const Text('play'),
              ),
              const SizedBox(
                width: 10,
              ),
              ElevatedButton(
                onPressed: () {
                  controller.pause();
                },
                child: const Text('pause'),
              ),
            ]),
            const SizedBox(
              height: 10,
            ),
            Row(
              children: [
                ElevatedButton(
                  onPressed: () {
                    controller.glitch();
                  },
                  child: const Text('glitch'),
                ),
                const SizedBox(
                  width: 10,
                ),
                ElevatedButton(
                  onPressed: () {
                    controller.reset();
                  },
                  child: const Text('reset'),
                ),
                const SizedBox(
                  width: 10,
                ),
                ElevatedButton(
                  onPressed: () async {
                    final image = await controller.asImage();
                    final imageByte =
                        await image.toByteData(format: ImageByteFormat.png);
                    setState(() {
                      _exportedImageByte = imageByte!.buffer.asUint8List();
                    });
                  },
                  child: const Text('export as image'),
                ),
              ],
            ),
            const SizedBox(
              height: 20,
            ),
            Row(
              children: [
                Checkbox(
                  value: _showColorShift,
                  onChanged: (bool? value) {
                    if (value != null) {
                      value
                          ? controller.showColorShift()
                          : controller.hideColorShift();
                      _showColorShift = value;
                    }
                    setState(() {});
                  },
                ),
                const Text("color shift"),
                const SizedBox(
                  width: 20,
                ),
                Checkbox(
                  value: _showGlitch,
                  onChanged: (bool? value) {
                    if (value != null) {
                      value ? controller.showGlitch() : controller.hideGlitch();
                      _showGlitch = value;
                    }
                    setState(() {});
                  },
                ),
                const Text("glitch"),
                const SizedBox(
                  width: 20,
                ),
                Checkbox(
                  value: _showScanline,
                  onChanged: (bool? value) {
                    if (value != null) {
                      value
                          ? controller.showScanline()
                          : controller.hideScanline();
                      _showScanline = value;
                    }
                    setState(() {});
                  },
                ),
                const Text("scan line"),
              ],
            ),
            const SizedBox(
              height: 20,
            ),
            Column(
              children: <Widget>[
                Text("glitch level: ${_glitchLevel}"),
                Slider(
                  label: '${_glitchLevel}',
                  min: 1,
                  max: 10,
                  value: _glitchLevel,
                  divisions: 100,
                  onChanged: _changeGlitchLevelSlider,
                )
              ],
            ),
            const SizedBox(
              height: 20,
            ),
            Column(
              children: <Widget>[
                Text("glitch interval: ${_frequency.toInt()}"),
                Slider(
                  label: '${_frequency.toInt()}',
                  min: 100,
                  max: 5000,
                  value: _frequency,
                  divisions: 100,
                  onChanged: _changeSlider,
                )
              ],
            ),
            const SizedBox(
              height: 20,
            ),
            Column(
              children: <Widget>[
                Center(
                    child:
                        Text("effect occurrence rate: ${_glitchRate.toInt()}")),
                Slider(
                  label: '${_glitchRate.toInt()}',
                  min: 0,
                  max: 100,
                  value: _glitchRate,
                  divisions: 100,
                  onChanged: _changeGlitchSlider,
                ),
              ],
            ),
            if (_exportedImageByte != null)
              Column(
                children: <Widget>[
                  const Center(child: Text("exported glitch image")),
                  Image.memory(
                    Uint8List.view(_exportedImageByte!.buffer),
                  )
                ],
              ),
            const SizedBox(
              height: 20,
            ),
          ]),
        ),
      ),
    );
  }
}