b-cancel

import 'package:flutter/material.dart';

import 'dart:math' as math;

//NOTE: this widget is designed specifically to go OVER a slider
//the idea is that the slider takes you to certain positions and this should give you some idea of what those positions are

//In order to meet it's goals as best as possible we MUST
//1. fill the entirety of the totalHeight
//   - otherwise the overlay won't match the slider and it won't be helpful

b-cancel

import 'package:flutter/material.dart';
import 'package:flutter_sticky_header/flutter_sticky_header.dart';

//-----Start App
void main() => runApp(MyApp());

//-----Entry Point
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

b-cancel

/*
SliverPersistentHeader(
  pinned: true,
  floating: true,
  delegate: OurDelegate(
    toolBarHeight: MediaQuery.of(context).padding.top,
    openHeight: 250,
    closedHeight: 40,
  ),
),

b-cancel

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

double totalHeight;

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(