142 lines
4.4 KiB
Dart
142 lines
4.4 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:stream_chat_flutter_core/stream_chat_flutter_core.dart';
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import 'package:stream_chat_flutter/src/full_screen_media.dart';
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import 'package:stream_chat_flutter/stream_chat_flutter.dart';
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class ImageGroup extends StatelessWidget {
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const ImageGroup({
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Key key,
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@required this.images,
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@required this.message,
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@required this.messageTheme,
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@required this.size,
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this.onShowMessage,
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}) : super(key: key);
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final List<Attachment> images;
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final Message message;
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final MessageTheme messageTheme;
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final Size size;
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final ShowMessageCallback onShowMessage;
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@override
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Widget build(BuildContext context) {
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return ConstrainedBox(
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constraints: BoxConstraints.loose(size),
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child: Flex(
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direction: Axis.vertical,
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children: <Widget>[
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Flexible(
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flex: 1,
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fit: FlexFit.tight,
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child: Flex(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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direction: Axis.horizontal,
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children: [
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Flexible(
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flex: 1,
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fit: FlexFit.tight,
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child: _buildImage(context, 0),
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),
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Flexible(
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flex: 1,
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fit: FlexFit.tight,
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child: Padding(
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padding: const EdgeInsets.only(left: 2.0),
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child: _buildImage(context, 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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if (images.length >= 3)
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Flexible(
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fit: FlexFit.tight,
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flex: 1,
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child: Padding(
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padding: const EdgeInsets.only(top: 2.0),
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child: Flex(
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direction: Axis.horizontal,
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: <Widget>[
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Flexible(
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fit: FlexFit.tight,
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flex: 1,
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child: _buildImage(context, 2),
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),
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if (images.length >= 4)
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Flexible(
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fit: FlexFit.tight,
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flex: 1,
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child: Padding(
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padding: const EdgeInsets.only(left: 2.0),
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child: Stack(
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fit: StackFit.expand,
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children: <Widget>[
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_buildImage(context, 3),
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if (images.length > 4)
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Positioned.fill(
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child: GestureDetector(
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onTap: () => _onTap(context, 3),
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child: Material(
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color: Colors.black38,
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child: Center(
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child: Text(
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'+ ${images.length - 4}',
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style: TextStyle(
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color: Colors.white,
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fontSize: 26,
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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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],
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),
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);
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}
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void _onTap(
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BuildContext context, [
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int index,
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]) {
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final channel = StreamChannel.of(context).channel;
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (context) => StreamChannel(
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channel: channel,
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child: FullScreenMedia(
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mediaAttachments: images,
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startIndex: index,
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userName: message.user.name,
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sentAt: message.createdAt,
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message: message,
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onShowMessage: onShowMessage,
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),
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),
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),
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);
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}
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Widget _buildImage(BuildContext context, int index) {
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return ImageAttachment(
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attachment: images[index],
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size: size,
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message: message,
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messageTheme: messageTheme,
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onAttachmentTap: () => _onTap(context, index),
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);
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}
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}
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