pointer_manger 1.0.0

Mange the number, type, how, and where touch pointers should interact with your widgets.

example/main.dart

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

/// Toggle it to see the difference afterwards.
const _withNegativeError = false;

const _noNegativeGroupTag = "no-negative";

void main() => runApp(const MaterialApp(
      home: Scaffold(
        body: Center(
          child: MyApp(),
        ),
      ),
    ));

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

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

class _MyAppState extends State<MyApp> {
  int _n = 0;

  Widget _buildWithNegativeError(BuildContext context) => Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          ElevatedButton(
            onPressed: _n <= 1 ? null : () => setState(() => _n = _n - 2),
            child: const Text("-2"),
          ),
          ElevatedButton(
            onPressed: _n <= 0 ? null : () => setState(() => --_n),
            child: const Text("-1"),
          ),
          Text(_n.toString()),
          ElevatedButton(
            onPressed: () => setState(() => ++_n),
            child: const Text("+1"),
          ),
        ],
      );

  Widget _buildWithoutNegativeError(BuildContext context) =>
      PointerGroupHandler(
        groupTag: _noNegativeGroupTag,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            PointerMangerWidget.withAll(
              child: ElevatedButton(
                onPressed: _n <= 1 ? null : () => setState(() => _n = _n - 2),
                child: const Text("-2"),
              ),
            ),
            PointerMangerWidget.withAll(
              child: ElevatedButton(
                onPressed: _n <= 0 ? null : () => setState(() => --_n),
                child: const Text("-1"),
              ),
            ),
            Text(_n.toString()),
            ElevatedButton(
              onPressed: () => setState(() => ++_n),
              child: const Text("+1"),
            ),
          ],
        ),
      );

  @override
  Widget build(BuildContext context) => _withNegativeError
      ? _buildWithNegativeError(context)
      : _buildWithoutNegativeError(context);
}