Start date: 30 Jan 2021
I did build my own widget include bottom nav, bottom sheet...
For this tune widget, I use the primaryDelta that return from Gesture Detector to calculate the min, mix drag and current tune type on Vertical drag, calculate that value at that AppBar of each on Horizontal drag.
For picking color from Image, I found the code from roipeker.com, here is his info on the code:
// 2019, roipeker.com
// screencast - demo simple image:
// https://youtu.be/EJyRH4_pY8I
//
// screencast - demo snapshot:
// https://youtu.be/-LxPcL7T61ETo crop image, I use image_crop: ^0.3.4.



