HansMuller

// Seventh AppBar Parts example: ReszingHeaderSliver with ContactBar.prototype

import 'dart:math' as math;

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';

class _ContactBarButton extends StatelessWidget {

HansMuller

// Fifth AppBarParts example - auto scroll
// This demo must be run in a simulator or on a mobile device

import 'dart:math' as math;

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';

HansMuller

import 'dart:math' as math;

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';

// The pinned item at the top of the list. This is an implicitly
// animated widget: when the opacity changes the title and divider
// fade in or out.

HansMuller

import 'dart:math' as math;

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/scheduler.dart';

// The pinned item at the top of the list. This is an implicitly
// animated widget: when the opacity changes the title and divider
// fade in or out.

HansMuller

import 'package:flutter/material.dart';

// The pinned item at the top of the list. This is an implicitly
// animated widget: when the opacity changes the title and divider
// fade in or out.
class TitleBar extends StatelessWidget {
  const TitleBar({ super.key, required this.opacity, required this.child });

  final double opacity;
  final Widget child;

HansMuller

import 'package:flutter/material.dart';

// The pinned item at the top of the list. This is an implicitly
// animated widget: when the opacity changes the title and divider
// fade in or out.
class TitleBar extends StatelessWidget {
  const TitleBar({ super.key, required this.opacity, required this.child });

  final double opacity;
  final Widget child;

HansMuller

// First AppBar Parts example: iOS Settings app layout

// https://gist.github.com/HansMuller/6d272ec6712a045ab2121bc8fb324797

import 'package:flutter/material.dart';

// The pinned item at the top of the list. This is an implicitly
// animated widget: when the opacity changes the title and divider
// fade in or out.
class TitleBar extends StatelessWidget {

HansMuller

import 'package:flutter/material.dart';

void main() {
  runApp(const ThemeDataExampleApp());
}

// This app's theme specifies an overall ColorScheme as well as overrides
// for the default configuration of FloatingActionButtons. To customize
// the appearance of other components, add additional component specific
// themes, rather than tweaking the color scheme.

HansMuller

import 'package:flutter/material.dart';

/// Flutter code sample for [ReorderableListView].

void main() {
  runApp(const ReorderableApp());
}

class ReorderableApp extends StatelessWidget {
  const ReorderableApp({ super.key });

HansMuller

// https://gist.github.com/HansMuller/7e0a38380d059058b71d6e7b03b9cd6d

/*

  PinnedSliver is a distillation of SliverPersistentHeader
  that just supports the pinned:true configuration and whose size is
  the size of the child.

  The child widget is built with a callback rather than a sliver
  delegate subclass. The callback is passed the parent BuildContext