PinchToZoomScrollable

A widget that makes another one pinch zoom, and return to its initial size and position when released.

PinchToZoomScrollableWidget is based on a fork of InteractiveViewer because the standard widget loses to ScrollView on GestureArena.

Also, the widget can preserve its state by transitioning to the Overlay and back.

Example

Usage

1. add dependencies into you project pubspec.yaml file

dependencies:
  pinch_to_zoom_scrollable: ^0.1.1

Run flutter packages get in the root directory of your app.

2. import pinch_to_zoom_scrollable lib

import 'package:pinch_to_zoom_scrollable/pinch_to_zoom_scrollable.dart';

Now you can use PinchToZoomScrollableWidget as a widget in your code.

PinchToZoomScrollableWidget Props

props	types	description
child	Widget	Child Widget. If [zoomChild] is null, child widget is used for zooming.
zoomChild	Widget?	Widget for zooming.
resetDuration	Duration	The duration of the reset animation. Default is Duration(milliseconds: 200).
resetCurve	Curve	The curve of the reset animation. Default is Curves.ease.
clipBehavior	Clip	Clipping behavior for InteractiveViewer. Default is Clip.none.
maxScale	double	The maximum allowed scale. Default to 8.
overlayColor	Color	Overlay background color. Default is Color(0x42000000).
saveState	bool	Use [GlobalKey] for saving state of [child]. Default is False.
rootOverlay	bool	Overlay.of(context) will use rootOverlay. Default is False.

Feel free to fork this repository and send pull request 🏁👍