mirror of
https://github.com/alibaba/flutter-go.git
synced 2025-05-21 23:06:33 +08:00
48 lines
1.5 KiB
Dart
48 lines
1.5 KiB
Dart
/// @Author: 一凨
|
||
/// @Date: 2018-12-15 19:44:12
|
||
/// @Last Modified by: 一凨
|
||
/// @Last Modified time: 2018-12-15 20:33:47
|
||
|
||
import 'package:flutter/material.dart';
|
||
|
||
import 'package:flutter_go/components/widget_demo.dart';
|
||
import './demo.dart';
|
||
|
||
const String content0 = '''
|
||
### **简介**
|
||
> 包含当前ViewPort及滚动位置等信息
|
||
- pixels：当前滚动位置
|
||
- maxScrollExtent：最大可滚动长度。
|
||
- extentBefore：滑出ViewPort顶部的长度；
|
||
- extentInside：ViewPort内部长度；此示例中屏幕显示的列表部分的长度
|
||
- extentAfter：列表中未滑入ViewPort部分的长度；此示例中列表底部未显示到屏幕范围部分的长度
|
||
- atEdge：是否滑到了Scrollable Widget的边界
|
||
''';
|
||
|
||
const String content1 = '''
|
||
### **基本用法**
|
||
> 抽象类，不可被实例化
|
||
- FixedScrollMetrics，它是实现此接口的不可变对象
|
||
- 下方Demo中，在接收到滚动事件时，参数类型为ScrollNotification，它包括一个metrics属性，它的类型是ScrollMetrics
|
||
''';
|
||
|
||
class Demo extends StatefulWidget {
|
||
static const String routeName = '/components/Scroll/ScrollMetrics';
|
||
_DemoState createState() => _DemoState();
|
||
}
|
||
|
||
class _DemoState extends State<Demo> {
|
||
@override
|
||
Widget build(BuildContext context) {
|
||
return WidgetDemo(
|
||
title: 'ScrollMetrics',
|
||
docUrl: 'https://docs.flutter.io/flutter/widgets/ScrollMetrics-class.html',
|
||
codeUrl: 'components/Scroll/ScrollMetrics/demo.dart',
|
||
contentList: [
|
||
content0,
|
||
content1,
|
||
ScrollMetricsDemo(),
|
||
],
|
||
);
|
||
}
|
||
} |