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Description:

zoom pinch overlay

zoom_pinch_overlay #

An instagram style pinch and zoom widget for all platform completely written in pure dart!

All other "zoom_pinch" package didn't work for me because it doesnt appear on top of all other widgets which
was an issue on one of my project. This package solves that problem by introducing a OverlayEntry so that it appears on top
of all other widgets.
Credit to @billylev for the contribution this package.
Getting Started #
Just wrap your widget that you want to be able to zoom in a ZoomOverlay
This is the values used in the video which can be found in the example folder.
ZoomOverlay(
modalBarrierColor: Colors.black12, // Optional
minScale: 0.5, // Optional
maxScale: 3.0, // Optional
animationCurve: Curves.fastOutSlowIn, // Defaults to fastOutSlowIn which mimics IOS instagram behavior
animationDuration: Duration(milliseconds: 300), // Defaults to 100 Milliseconds. Recommended duration is 300 milliseconds for Curves.fastOutSlowIn
twoTouchOnly: true, // Defaults to false
onScaleStart: () {}, // optional VoidCallback
onScaleStop: () {}, // optional VoidCallback
child: CachedNetworkImage(
imageUrl: imageUrl,
),
),
copied to clipboard
Documentations #

parameter
documentation

minScale
Specifies the minimum multiplier it can scale outwards.

maxScale
Specifies the maximum multiplier the user can zoom inwards.

twoTouchOnly
specifies wither the zoom is enabled only with two fingers on the screen. Defaults to false.

child
A widget to make zoomable.

animationDuration
Specifies the duration when the zoom has ended and is animating back to it's original place. Defaults to Duration(milliseconds: 100)

animationCurve
Specifies the curve when the zoom has ended and is animating back to it's original place. Defaults to Curves.fastOutSlowIn

modalBarrierColor
Specifies the color of the background of the modal barrier.

onScaleStart
Function that gets called when scaling of the widget starts.

onScaleStop
Function that gets called when scaling of the widget stops.

buildContextOverlayState
Overrides the default overlay state.

Medium blog post #
Read the accompanying article here for more info about this package.