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701eff4ac5
This implements an update to the look of the Slider widget. Specifically, it does the following: * Adds the ability to customize the colors of all components of the slider * Adds the ability to customize the shape of the slider thumb and value indicator * Adds the ability to show the value indicator on continuous sliders * Updates the default value indicator to be a "paddle" shape with new animations. * Changes the tick marks to be visible all the time on discrete sliders * Fixes a memory leak of an animation controller. * Removes "thumbOpenAtMin" flag, which is no longer needed, and can be emulated by the custom thumb shape support. It was not widely used. * Adds tests for all of the new features.
74 lines
2.1 KiB
Dart
74 lines
2.1 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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class SliderDemo extends StatefulWidget {
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static const String routeName = '/material/slider';
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@override
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_SliderDemoState createState() => new _SliderDemoState();
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}
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class _SliderDemoState extends State<SliderDemo> {
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double _value = 25.0;
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double _discreteValue = 20.0;
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@override
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Widget build(BuildContext context) {
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return new Scaffold(
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appBar: new AppBar(title: const Text('Sliders')),
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body: new Padding(
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padding: const EdgeInsets.symmetric(horizontal: 40.0),
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child: new Column(
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mainAxisAlignment: MainAxisAlignment.spaceAround,
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children: <Widget>[
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new Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget> [
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new Slider(
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value: _value,
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min: 0.0,
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max: 100.0,
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onChanged: (double value) {
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setState(() {
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_value = value;
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});
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}
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),
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const Text('Continuous'),
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]
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),
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new Column(
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mainAxisSize: MainAxisSize.min,
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children: const <Widget> [
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const Slider(value: 0.25, onChanged: null),
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const Text('Disabled'),
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]
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),
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new Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget> [
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new Slider(
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value: _discreteValue,
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min: 0.0,
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max: 100.0,
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divisions: 5,
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label: '${_discreteValue.round()}',
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onChanged: (double value) {
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setState(() {
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_discreteValue = value;
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});
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}
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),
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const Text('Discrete'),
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],
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),
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],
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),
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),
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);
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}
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}
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