move_detector 0.0.2

The easy way to detect touch movements on screen in Flutter.

Move Detector

The easy way to detect touch movements on screen in Flutter.

Getting Started

Add dependency to your project.

$ flutter pub add move_detector

or

dependencies:
  move_detector: ^0.0.2

Then run flutter pub get.

Usage

Here is a simple way of using MoveDetector.

import 'package:move_detector/move_detector.dart';

MoveDetector(
  child: ..., // your child widget
  onStart: (MoveDetails details) {
    // do something when pointer on screen starting to move
  },
  onUpdate: (MoveDetails details) {
    // do something when pointer on screen is moving
  },
  onEnd: (MoveDetails details) {
    // do something when pointer on screen stop moving
  },
)

And here is the details of each MoveDetails.

// Coordinate of the position of the pointer, 
// in logical pixels in the global coordinate space.
Offset position 

// The [position] transformed into the local coordinate system.
Offset localPosition

// Distance in logical pixels that the pointer has moved since the last [MoveEvent].
Offset delta

// The [delta] transformed into the local coordinate system.
Offset localDelta

Example

Check out example project here. You can also try the working example app: move_detector.apk.