Flutter Advanced Canvas Editor

A Flutter package for creating, editing, and exporting canvas-based artwork with advanced features.

Preview

Features

• Draw, rotate, and delete components on a canvas.
• Undo and redo actions for component manipulation.
• Export the canvas as a PNG image.
• Callback integration for handling canvas exports.

Installation

Add the following line to your pubspec.yaml file:

dependencies:
  flutter_advanced_canvas_editor:

Usage

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}


class _MyAppState extends State<MyApp> {
  late CanvasController controller;
  bool isDrawing = false;
  bool isErasing = false;

  @override
  void initState() {
    super.initState();
    controller = CanvasController((pngBytes) {
      print('PNG bytes exporting canvas: $pngBytes');
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            body: SafeArea(
                child: Column(
                    children: [
                      Expanded(
                        child: Center(
                          child: CanvasWidget(controller: controller, backgroundImage: 'assets/images/background.png',),
                        ),
                      ),
                    ])))

    );
  }
}

Save Canvas as PNG Bytes

late CanvasController controller;

@override
void initState() {
  super.initState();
  controller = CanvasController((pngBytes) {
    print('PNG bytes exporting canvas: $pngBytes');
  });
}

Contributing

Contributions are welcome! Feel free to open issues and pull requests to suggest new features, report bugs, or improve the codebase.

License

This project is licensed under the MIT License - see the LICENSE file for details.