Photo_view: i don't need zoom out image after its original size

[Adilkp796]

I don't need zoom out image after its original size.

[Adilkp796]

I fix that problem
I get image's original size by calling this method getScaleForScaleState(widget.controller.scaleState, widget.scaleBoundaries)
and check with if condition by if(getInitialScale <= newScale) on onScaleUpdate() method
double newScale = _scaleBefore * details.scale;

[hugocbpassos]

A very simple way to do that is setting minScale to PhotoViewComputedScale.contained.