3 lab
This commit is contained in:
sardq
parent
f296e54a0f
commit
36585b7207
171
lib/main.dart
171
lib/main.dart
@ -1,4 +1,5 @@
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import 'package:flutter/material.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/material.dart';
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void main() {
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void main() {
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runApp(const MyApp());
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runApp(const MyApp());
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@ -55,71 +56,127 @@ class MyHomePage extends StatefulWidget {
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}
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}
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class _MyHomePageState extends State<MyHomePage> {
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class _MyHomePageState extends State<MyHomePage> {
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int _counter = 0;
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final Color _color = Colors.blueAccent;
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void _incrementCounter() {
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setState(() {
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// This call to setState tells the Flutter framework that something has
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// changed in this State, which causes it to rerun the build method below
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// so that the display can reflect the updated values. If we changed
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// _counter without calling setState(), then the build method would not be
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// called again, and so nothing would appear to happen.
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_counter++;
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});
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}
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@override
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@override
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Widget build(BuildContext context) {
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Widget build(BuildContext context) {
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// This method is rerun every time setState is called, for instance as done
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// by the _incrementCounter method above.
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//
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// The Flutter framework has been optimized to make rerunning build methods
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// fast, so that you can just rebuild anything that needs updating rather
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// than having to individually change instances of widgets.
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return Scaffold(
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return Scaffold(
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appBar: AppBar(
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appBar: AppBar(
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// TRY THIS: Try changing the color here to a specific color (to
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// Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
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// change color while the other colors stay the same.
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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// Here we take the value from the MyHomePage object that was created by
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// the App.build method, and use it to set our appbar title.
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title: Text(widget.title),
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title: Text(widget.title),
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),
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),
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body: Center(
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body: const MyWidget(),
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// Center is a layout widget. It takes a single child and positions it
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);
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// in the middle of the parent.
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}
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child: Column(
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}
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// Column is also a layout widget. It takes a list of children and
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// arranges them vertically. By default, it sizes itself to fit its
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class MyWidget extends StatelessWidget {
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// children horizontally, and tries to be as tall as its parent.
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const MyWidget({super.key});
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//
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// Column has various properties to control how it sizes itself and
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@override
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// how it positions its children. Here we use mainAxisAlignment to
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Widget build(BuildContext context) {
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// center the children vertically; the main axis here is the vertical
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final data = [
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// axis because Columns are vertical (the cross axis would be
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_CardData(
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// horizontal).
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'Зов Ктулху',
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//
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descriptionText: 'Лучше бы не находить разгадку, объединяющую сошедших с ума творцов...',
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// TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
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imageUrl: 'https://lovecraft.country/images/bibliography/call-of-cthulhu-mini.webp'
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// action in the IDE, or press "p" in the console), to see the
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),
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// wireframe for each widget.
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_CardData(
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mainAxisAlignment: MainAxisAlignment.center,
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'Хребты безумия',
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children: <Widget>[
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descriptionText: '«Хребты безумия» написаны в документальной манере повествования, постепенно привыкая к которой, становишься свидетелем особой реальности описываемых событий.',
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const Text(
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icon: Icons.hail,
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'You have pushed the button this many times:',
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imageUrl: 'https://lovecraft.country/images/bibliography/At-the-Mountains-of-Madness-mini.webp'
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),
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),
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Text(
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_CardData('Тень над Инсмутом', descriptionText: 'Инсмут, маленький рыбацкий городок неподалеку от Аркхэма, уже много лет имеет дурную славу. В округе ходят жуткие истории о его угрюмых и уродливых жителях, от которых лучше держаться подальше.', icon: Icons.warning_amber, imageUrl: 'https://lovecraft.country/images/bibliography/The-Shadow-over-Innsmouth.webp')
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'$_counter',
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];
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style: Theme.of(context).textTheme.headlineMedium,
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return Center(
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),
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child: SingleChildScrollView(
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],
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child: Column(
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),
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mainAxisAlignment: MainAxisAlignment.center,
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),
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children: data.map((e) => _Card.fromData(e)).toList(),
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floatingActionButton: FloatingActionButton(
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),
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onPressed: _incrementCounter,
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),
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tooltip: 'Increment',
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);
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child: const Icon(Icons.add),
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}
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), // This trailing comma makes auto-formatting nicer for build methods.
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}
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class _CardData {
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final String text;
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final String descriptionText;
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final IconData icon;
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final String? imageUrl;
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_CardData(this.text,
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{required this.descriptionText,
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this.icon = Icons.ac_unit_outlined,
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this.imageUrl});
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}
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class _Card extends StatelessWidget {
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final String text;
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final String descriptionText;
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final IconData icon;
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final String? imageUrl;
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const _Card(this.text,
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{required this.descriptionText,
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this.icon = Icons.ac_unit_outlined,
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this.imageUrl});
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factory _Card.fromData(_CardData data) => _Card(
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data.text,
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descriptionText: data.descriptionText,
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icon: data.icon,
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imageUrl: data.imageUrl,
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);
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@override
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Widget build(BuildContext context) {
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return Container(
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margin: const EdgeInsets.only(top: 16),
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Colors.amber,
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borderRadius: BorderRadius.circular(20),
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border: Border.all(
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color: Colors.grey,
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width: 2,
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),
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),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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ClipRRect(
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borderRadius: BorderRadius.circular(20),
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child: SizedBox(
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width: 140,
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height: 100,
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child: Image.network(
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imageUrl ?? '',
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fit: BoxFit.cover,
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errorBuilder: (_, __, ___) => const Placeholder(),
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),
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),
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),
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Flexible(
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child: Padding(
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padding: const EdgeInsets.only(left: 16.0),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(text, style: Theme.of(context).textTheme.headlineLarge),
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Text(descriptionText,
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style: Theme.of(context).textTheme.bodyLarge),
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],
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),
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)),
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Padding(
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padding: const EdgeInsets.only(left:8.0),
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child: Icon(icon),
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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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}
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