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189
lib/widgets/group_avatars.dart
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189
lib/widgets/group_avatars.dart
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import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:gwid/models/chat.dart';
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import 'package:gwid/models/contact.dart';
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class GroupAvatars extends StatelessWidget {
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final Chat chat;
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final Map<int, Contact> contacts;
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final int maxAvatars;
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final double avatarSize;
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final double overlap;
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const GroupAvatars({
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super.key,
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required this.chat,
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required this.contacts,
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this.maxAvatars = 3,
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this.avatarSize = 16.0,
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this.overlap = 8.0,
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});
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@override
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Widget build(BuildContext context) {
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if (!chat.isGroup) {
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return const SizedBox.shrink();
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}
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final participantIds = chat.groupParticipantIds;
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if (participantIds.isEmpty) {
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return const SizedBox.shrink();
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}
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final visibleParticipants = participantIds.take(maxAvatars).toList();
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final remainingCount = participantIds.length - maxAvatars;
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final totalParticipants = participantIds.length;
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double adaptiveAvatarSize;
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if (totalParticipants <= 2) {
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adaptiveAvatarSize =
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avatarSize * 1.5; // Большие аватары для 1-2 участников
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} else if (totalParticipants <= 4) {
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adaptiveAvatarSize =
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avatarSize * 1.2; // Средние аватары для 3-4 участников
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} else {
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adaptiveAvatarSize =
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avatarSize * 0.8; // Маленькие аватары для 5+ участников
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}
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return SizedBox(
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height: adaptiveAvatarSize * 2.5,
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width: adaptiveAvatarSize * 2.5,
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child: Stack(
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children: [
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...visibleParticipants.asMap().entries.map((entry) {
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final index = entry.key;
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final participantId = entry.value;
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final contact = contacts[participantId];
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double x, y;
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if (visibleParticipants.length == 1) {
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x = adaptiveAvatarSize * 1.25;
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y = adaptiveAvatarSize * 1.25;
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} else if (visibleParticipants.length == 2) {
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x = adaptiveAvatarSize * (0.5 + index * 1.5);
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y = adaptiveAvatarSize * 1.25;
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} else {
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final angle = (index * 2 * pi) / visibleParticipants.length;
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final radius = adaptiveAvatarSize * 0.6;
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final center = adaptiveAvatarSize * 1.25;
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x = center + radius * cos(angle);
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y = center + radius * sin(angle);
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}
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return Positioned(
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left: x - adaptiveAvatarSize / 2,
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top: y - adaptiveAvatarSize / 2,
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child: _buildAvatar(
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context,
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contact,
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participantId,
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adaptiveAvatarSize,
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),
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);
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}),
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if (remainingCount > 0)
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Positioned(
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left: adaptiveAvatarSize * 0.75,
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top: adaptiveAvatarSize * 0.75,
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child: _buildMoreIndicator(
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context,
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remainingCount,
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adaptiveAvatarSize,
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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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Widget _buildAvatar(
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BuildContext context,
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Contact? contact,
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int participantId,
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double size,
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) {
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final colors = Theme.of(context).colorScheme;
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return Container(
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width: size,
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height: size,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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border: Border.all(color: colors.surface, width: 2),
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boxShadow: [
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BoxShadow(
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color: colors.shadow.withOpacity(0.3),
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blurRadius: 4,
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offset: const Offset(0, 2),
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),
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],
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),
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child: CircleAvatar(
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radius: size / 2,
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backgroundColor: contact != null
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? colors.primaryContainer
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: colors.secondaryContainer,
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backgroundImage: contact?.photoBaseUrl != null
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? NetworkImage(contact!.photoBaseUrl!)
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: null,
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child: contact?.photoBaseUrl == null
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? Text(
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contact?.name.isNotEmpty == true
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? contact!.name[0].toUpperCase()
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: participantId.toString().substring(
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participantId.toString().length - 1,
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), // Последняя цифра ID
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style: TextStyle(
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color: contact != null
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? colors.onPrimaryContainer
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: colors.onSecondaryContainer,
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fontSize: size * 0.5,
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fontWeight: FontWeight.w600,
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),
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)
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: null,
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),
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);
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}
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Widget _buildMoreIndicator(BuildContext context, int count, double size) {
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final colors = Theme.of(context).colorScheme;
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return Container(
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width: size,
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height: size,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: colors.secondaryContainer,
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border: Border.all(color: colors.surface, width: 2),
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boxShadow: [
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BoxShadow(
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color: colors.shadow.withOpacity(0.3),
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blurRadius: 4,
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offset: const Offset(0, 2),
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),
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],
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),
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child: Center(
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child: Text(
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'+$count',
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style: TextStyle(
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color: colors.onSecondaryContainer,
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fontSize: size * 0.4,
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fontWeight: FontWeight.w600,
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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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