33403bd28e
This extracts the sample code out from the API doc comments, and places them in separate files on disk, allowing running of the examples locally, testing them, and building of slightly larger examples.
92 lines
3.1 KiB
Dart
92 lines
3.1 KiB
Dart
// Copyright 2014 The Flutter 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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// Template: dev/snippets/config/templates/stateless_widget_scaffold.tmpl
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//
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// Comment lines marked with "▼▼▼" and "▲▲▲" are used for authoring
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// of samples, and may be ignored if you are just exploring the sample.
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// Flutter code sample for InteractiveViewer.constrained
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//
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//***************************************************************************
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//* ▼▼▼▼▼▼▼▼ description ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)
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// This example shows how to create a pannable table. Because the table is
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// larger than the entire screen, setting `constrained` to false is necessary
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// to allow it to be drawn to its full size. The parts of the table that
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// exceed the screen size can then be panned into view.
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//* ▲▲▲▲▲▲▲▲ description ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
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//***************************************************************************
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import 'package:flutter/material.dart';
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void main() => runApp(const MyApp());
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/// This is the main application widget.
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class MyApp extends StatelessWidget {
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const MyApp({Key? key}) : super(key: key);
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static const String _title = 'Flutter Code Sample';
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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title: _title,
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home: Scaffold(
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appBar: AppBar(title: const Text(_title)),
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body: const MyStatelessWidget(),
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),
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);
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}
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}
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/// This is the stateless widget that the main application instantiates.
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class MyStatelessWidget extends StatelessWidget {
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const MyStatelessWidget({Key? key}) : super(key: key);
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@override
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//********************************************************************
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//* ▼▼▼▼▼▼▼▼ code ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)
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Widget build(BuildContext context) {
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const int _rowCount = 48;
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const int _columnCount = 6;
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return InteractiveViewer(
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alignPanAxis: true,
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constrained: false,
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scaleEnabled: false,
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child: Table(
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columnWidths: <int, TableColumnWidth>{
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for (int column = 0; column < _columnCount; column += 1)
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column: const FixedColumnWidth(200.0),
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},
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children: <TableRow>[
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for (int row = 0; row < _rowCount; row += 1)
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TableRow(
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children: <Widget>[
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for (int column = 0; column < _columnCount; column += 1)
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Container(
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height: 26,
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color: row % 2 + column % 2 == 1
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? Colors.white
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: Colors.grey.withOpacity(0.1),
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child: Align(
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alignment: Alignment.centerLeft,
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child: Text('$row x $column'),
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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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//* ▲▲▲▲▲▲▲▲ code ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
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//********************************************************************
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}
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