mirror of https://github.com/flutter/samples.git
Added Material Banner demo and Material Card demo (#238)
* Fix apk release issue * Removed TODO * Removed TODO * Added chip demo * Added card demo * Added Material Card demo and Material Banner Demo * Updated license for demos * Merge with master * Fixing issues * Banner demo issues fixed * Fixed all issues * Updated code samples * Added images to card demo * Fixed issues * Updated code segment * Fixed issues * Removed unused variable * Formatted * Updated code segmentspull/248/head
Jose Alba
5 years ago
committed by
GitHub
parent
9630222230
commit
c2f639c519
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// Copyright 2020 The Flutter team. 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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import 'package:gallery/l10n/gallery_localizations.dart';
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// BEGIN bannerDemo
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enum BannerDemoAction {
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reset,
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showMultipleActions,
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showLeading,
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}
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class BannerDemo extends StatefulWidget {
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@override
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_BannerDemoState createState() => _BannerDemoState();
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}
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class _BannerDemoState extends State<BannerDemo> {
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static const _itemCount = 20;
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var _displayBanner = true;
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var _showMultipleActions = true;
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var _showLeading = true;
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void handleDemoAction(BannerDemoAction action) {
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setState(() {
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switch (action) {
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case BannerDemoAction.reset:
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_displayBanner = true;
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_showMultipleActions = true;
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_showLeading = true;
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break;
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case BannerDemoAction.showMultipleActions:
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_showMultipleActions = !_showMultipleActions;
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break;
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case BannerDemoAction.showLeading:
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_showLeading = !_showLeading;
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break;
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}
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});
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}
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@override
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Widget build(BuildContext context) {
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final banner = MaterialBanner(
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content: Text(GalleryLocalizations.of(context).bannerDemoText),
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leading: _showLeading
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? CircleAvatar(
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child: Icon(Icons.access_alarm),
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backgroundColor: Theme.of(context).colorScheme.primary,
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)
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: null,
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actions: [
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FlatButton(
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child: Text(GalleryLocalizations.of(context).signIn),
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onPressed: () {
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setState(() {
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_displayBanner = false;
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});
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},
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),
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if (_showMultipleActions)
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FlatButton(
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child: Text(GalleryLocalizations.of(context).dismiss),
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onPressed: () {
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setState(() {
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_displayBanner = false;
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});
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},
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),
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],
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);
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return Scaffold(
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appBar: AppBar(
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automaticallyImplyLeading: false,
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title: Text(GalleryLocalizations.of(context).demoBannerTitle),
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actions: [
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PopupMenuButton<BannerDemoAction>(
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onSelected: handleDemoAction,
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itemBuilder: (context) => <PopupMenuEntry<BannerDemoAction>>[
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PopupMenuItem<BannerDemoAction>(
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value: BannerDemoAction.reset,
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child:
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Text(GalleryLocalizations.of(context).bannerDemoResetText),
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),
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const PopupMenuDivider(),
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CheckedPopupMenuItem<BannerDemoAction>(
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value: BannerDemoAction.showMultipleActions,
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checked: _showMultipleActions,
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child: Text(
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GalleryLocalizations.of(context).bannerDemoMultipleText),
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),
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CheckedPopupMenuItem<BannerDemoAction>(
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value: BannerDemoAction.showLeading,
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checked: _showLeading,
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child: Text(
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GalleryLocalizations.of(context).bannerDemoLeadingText),
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),
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],
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),
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],
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),
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body: ListView.builder(
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itemCount: _displayBanner ? _itemCount + 1 : _itemCount,
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itemBuilder: (context, index) {
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if (index == 0 && _displayBanner) {
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return banner;
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}
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return ListTile(
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title: Text(
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GalleryLocalizations.of(context)
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.starterAppDrawerItem(_displayBanner ? index : index + 1),
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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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// END
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@ -0,0 +1,411 @@
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// Copyright 2020 The Flutter team. 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/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:gallery/l10n/gallery_localizations.dart';
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const String _kGalleryAssetsPackage = 'flutter_gallery_assets';
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// BEGIN cardsDemo
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enum CardDemoType {
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standard,
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tappable,
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selectable,
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}
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class TravelDestination {
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const TravelDestination({
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@required this.assetName,
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@required this.assetPackage,
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@required this.title,
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@required this.description,
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@required this.city,
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@required this.location,
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this.type = CardDemoType.standard,
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}) : assert(assetName != null),
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assert(assetPackage != null),
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assert(title != null),
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assert(description != null),
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assert(city != null),
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assert(location != null);
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final String assetName;
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final String assetPackage;
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final String title;
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final String description;
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final String city;
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final String location;
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final CardDemoType type;
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}
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List<TravelDestination> destinations(BuildContext context) => [
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TravelDestination(
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assetName: 'places/india_thanjavur_market.png',
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assetPackage: _kGalleryAssetsPackage,
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title:
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GalleryLocalizations.of(context).cardsDemoTravelDestinationTitle1,
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description: GalleryLocalizations.of(context)
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.cardsDemoTravelDestinationDescription1,
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city: GalleryLocalizations.of(context).cardsDemoTravelDestinationCity1,
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location: GalleryLocalizations.of(context)
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.cardsDemoTravelDestinationLocation1,
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),
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TravelDestination(
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assetName: 'places/india_chettinad_silk_maker.png',
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assetPackage: _kGalleryAssetsPackage,
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title:
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GalleryLocalizations.of(context).cardsDemoTravelDestinationTitle2,
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description: GalleryLocalizations.of(context)
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.cardsDemoTravelDestinationDescription2,
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city: GalleryLocalizations.of(context).cardsDemoTravelDestinationCity2,
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location: GalleryLocalizations.of(context)
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.cardsDemoTravelDestinationLocation2,
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type: CardDemoType.tappable,
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),
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TravelDestination(
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assetName: 'places/india_tanjore_thanjavur_temple.png',
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assetPackage: _kGalleryAssetsPackage,
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title:
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GalleryLocalizations.of(context).cardsDemoTravelDestinationTitle3,
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description: GalleryLocalizations.of(context)
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.cardsDemoTravelDestinationDescription3,
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city: GalleryLocalizations.of(context).cardsDemoTravelDestinationCity1,
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location: GalleryLocalizations.of(context)
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.cardsDemoTravelDestinationLocation1,
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type: CardDemoType.selectable,
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),
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];
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class TravelDestinationItem extends StatelessWidget {
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const TravelDestinationItem({Key key, @required this.destination, this.shape})
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: assert(destination != null),
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super(key: key);
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// This height will allow for all the Card's content to fit comfortably within the card.
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static const height = 338.0;
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final TravelDestination destination;
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final ShapeBorder shape;
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@override
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Widget build(BuildContext context) {
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return SafeArea(
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top: false,
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bottom: false,
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child: Padding(
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padding: const EdgeInsets.all(8),
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child: Column(
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children: [
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SectionTitle(
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title:
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GalleryLocalizations.of(context).settingsTextScalingNormal),
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SizedBox(
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height: height,
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child: Card(
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// This ensures that the Card's children are clipped correctly.
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clipBehavior: Clip.antiAlias,
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shape: shape,
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child: TravelDestinationContent(destination: destination),
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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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class TappableTravelDestinationItem extends StatelessWidget {
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const TappableTravelDestinationItem(
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{Key key, @required this.destination, this.shape})
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: assert(destination != null),
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super(key: key);
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// This height will allow for all the Card's content to fit comfortably within the card.
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static const height = 298.0;
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final TravelDestination destination;
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final ShapeBorder shape;
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@override
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Widget build(BuildContext context) {
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return SafeArea(
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top: false,
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bottom: false,
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child: Padding(
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padding: const EdgeInsets.all(8),
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child: Column(
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children: [
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SectionTitle(
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title: GalleryLocalizations.of(context).cardsDemoTappable),
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SizedBox(
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height: height,
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child: Card(
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// This ensures that the Card's children (including the ink splash) are clipped correctly.
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clipBehavior: Clip.antiAlias,
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shape: shape,
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child: InkWell(
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onTap: () {
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print('Card was tapped');
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},
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// Generally, material cards use onSurface with 12% opacity for the pressed state.
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splashColor:
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Theme.of(context).colorScheme.onSurface.withOpacity(0.12),
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// Generally, material cards do not have a highlight overlay.
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highlightColor: Colors.transparent,
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child: TravelDestinationContent(destination: destination),
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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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class SelectableTravelDestinationItem extends StatefulWidget {
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const SelectableTravelDestinationItem(
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{Key key, @required this.destination, this.shape})
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: assert(destination != null),
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super(key: key);
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final TravelDestination destination;
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final ShapeBorder shape;
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@override
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_SelectableTravelDestinationItemState createState() =>
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_SelectableTravelDestinationItemState();
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}
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class _SelectableTravelDestinationItemState
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extends State<SelectableTravelDestinationItem> {
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// This height will allow for all the Card's content to fit comfortably within the card.
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static const height = 298.0;
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var _isSelected = false;
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@override
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Widget build(BuildContext context) {
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final ColorScheme colorScheme = Theme.of(context).colorScheme;
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return SafeArea(
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top: false,
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bottom: false,
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child: Padding(
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padding: const EdgeInsets.all(8),
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child: Column(
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children: [
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SectionTitle(
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title: GalleryLocalizations.of(context).cardsDemoSelectable),
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SizedBox(
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height: height,
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child: Card(
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// This ensures that the Card's children (including the ink splash) are clipped correctly.
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clipBehavior: Clip.antiAlias,
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shape: widget.shape,
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child: InkWell(
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onLongPress: () {
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print('Selectable card state changed');
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setState(() {
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_isSelected = !_isSelected;
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});
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},
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// Generally, material cards use onSurface with 12% opacity for the pressed state.
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splashColor: colorScheme.onSurface.withOpacity(0.12),
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// Generally, material cards do not have a highlight overlay.
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highlightColor: Colors.transparent,
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child: Stack(
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children: [
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Container(
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color: _isSelected
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// Generally, material cards use primary with 8% opacity for the selected state.
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// See: https://material.io/design/interaction/states.html#anatomy
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? colorScheme.primary.withOpacity(0.08)
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: Colors.transparent,
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),
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TravelDestinationContent(destination: widget.destination),
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Align(
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alignment: Alignment.topRight,
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child: Padding(
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padding: const EdgeInsets.all(8),
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child: Icon(
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Icons.check_circle,
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color: _isSelected
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? colorScheme.primary
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: Colors.transparent,
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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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),
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),
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);
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}
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}
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class SectionTitle extends StatelessWidget {
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const SectionTitle({
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Key key,
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this.title,
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}) : super(key: key);
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final String title;
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@override
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Widget build(BuildContext context) {
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return Padding(
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padding: const EdgeInsets.fromLTRB(4, 4, 4, 12),
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child: Align(
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alignment: Alignment.centerLeft,
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child: Text(title, style: Theme.of(context).textTheme.subhead),
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),
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);
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}
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}
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|
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class TravelDestinationContent extends StatelessWidget {
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const TravelDestinationContent({Key key, @required this.destination})
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: assert(destination != null),
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super(key: key);
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final TravelDestination destination;
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@override
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Widget build(BuildContext context) {
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final ThemeData theme = Theme.of(context);
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final TextStyle titleStyle =
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theme.textTheme.headline.copyWith(color: Colors.white);
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final TextStyle descriptionStyle = theme.textTheme.subhead;
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SizedBox(
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height: 184,
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child: Stack(
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children: [
|
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Positioned.fill(
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// In order to have the ink splash appear above the image, you
|
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// must use Ink.image. This allows the image to be painted as
|
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// part of the Material and display ink effects above it. Using
|
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// a standard Image will obscure the ink splash.
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child: Ink.image(
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image: AssetImage(destination.assetName,
|
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package: destination.assetPackage),
|
||||
fit: BoxFit.cover,
|
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child: Container(),
|
||||
),
|
||||
),
|
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Positioned(
|
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bottom: 16,
|
||||
left: 16,
|
||||
right: 16,
|
||||
child: FittedBox(
|
||||
fit: BoxFit.scaleDown,
|
||||
alignment: Alignment.centerLeft,
|
||||
child: Text(
|
||||
destination.title,
|
||||
style: titleStyle,
|
||||
),
|
||||
),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
// Description and share/explore buttons.
|
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Padding(
|
||||
padding: const EdgeInsets.fromLTRB(16, 16, 16, 0),
|
||||
child: DefaultTextStyle(
|
||||
softWrap: false,
|
||||
overflow: TextOverflow.ellipsis,
|
||||
style: descriptionStyle,
|
||||
child: Column(
|
||||
crossAxisAlignment: CrossAxisAlignment.start,
|
||||
children: [
|
||||
// This array contains the three line description on each card
|
||||
// demo.
|
||||
Padding(
|
||||
padding: const EdgeInsets.only(bottom: 8),
|
||||
child: Text(
|
||||
destination.description,
|
||||
style: descriptionStyle.copyWith(color: Colors.black54),
|
||||
),
|
||||
),
|
||||
Text(destination.city),
|
||||
Text(destination.location),
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
if (destination.type == CardDemoType.standard)
|
||||
// share, explore buttons
|
||||
ButtonBar(
|
||||
alignment: MainAxisAlignment.start,
|
||||
children: [
|
||||
FlatButton(
|
||||
child: Text(GalleryLocalizations.of(context).demoMenuShare,
|
||||
semanticsLabel: GalleryLocalizations.of(context)
|
||||
.cardsDemoShareSemantics(destination.title)),
|
||||
textColor: Colors.amber.shade500,
|
||||
onPressed: () {
|
||||
print('pressed');
|
||||
},
|
||||
),
|
||||
FlatButton(
|
||||
child: Text(GalleryLocalizations.of(context).cardsDemoExplore,
|
||||
semanticsLabel: GalleryLocalizations.of(context)
|
||||
.cardsDemoExploreSemantics(destination.title)),
|
||||
textColor: Colors.amber.shade500,
|
||||
onPressed: () {
|
||||
print('pressed');
|
||||
},
|
||||
),
|
||||
],
|
||||
),
|
||||
],
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class CardsDemo extends StatefulWidget {
|
||||
@override
|
||||
_CardsDemoState createState() => _CardsDemoState();
|
||||
}
|
||||
|
||||
class _CardsDemoState extends State<CardsDemo> {
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
return Scaffold(
|
||||
appBar: AppBar(
|
||||
automaticallyImplyLeading: false,
|
||||
title: Text(GalleryLocalizations.of(context).demoCardTitle),
|
||||
),
|
||||
body: Scrollbar(
|
||||
child: ListView(
|
||||
padding: const EdgeInsets.only(top: 8, left: 8, right: 8),
|
||||
children: [
|
||||
for (final destination in destinations(context))
|
||||
Container(
|
||||
margin: const EdgeInsets.only(bottom: 8),
|
||||
child: (destination.type == CardDemoType.standard)
|
||||
? TravelDestinationItem(destination: destination)
|
||||
: destination.type == CardDemoType.tappable
|
||||
? TappableTravelDestinationItem(
|
||||
destination: destination)
|
||||
: SelectableTravelDestinationItem(
|
||||
destination: destination),
|
||||
),
|
||||
],
|
||||
),
|
||||
),
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
// END
|
||||
Loading…
Reference in new issue