545 lines
18 KiB
Dart
545 lines
18 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:patbond_flutter/core/theme/app_theme.dart';
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import 'package:patbond_flutter/data/demo_data.dart';
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import 'package:patbond_flutter/models/models.dart';
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import 'package:patbond_flutter/state/app_state.dart';
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import 'package:patbond_flutter/widgets/common.dart';
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enum CreationMode { image, video }
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class CreatePage extends StatefulWidget {
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const CreatePage({
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required this.appState,
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required this.onPublished,
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super.key,
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});
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final AppState appState;
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final ValueChanged<PostModel> onPublished;
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@override
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State<CreatePage> createState() => _CreatePageState();
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}
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class _CreatePageState extends State<CreatePage> {
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final titleController = TextEditingController();
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final contentController = TextEditingController();
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CreationMode mode = CreationMode.image;
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CreationStyle selectedStyle = creationStyles.first;
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String selectedModel = 'Patbond-V1';
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String duration = '5 秒';
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String resolution = '1080P';
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bool upscaling = true;
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bool uploaded = false;
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bool uploading = false;
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bool generating = false;
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int generationStep = 0;
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String? resultUrl;
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List<String> tags = ['可爱修勾', 'AI宠物'];
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@override
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void dispose() {
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titleController.dispose();
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contentController.dispose();
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super.dispose();
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}
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Future<void> simulateUpload() async {
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setState(() => uploading = true);
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await Future<void>.delayed(const Duration(milliseconds: 700));
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if (!mounted) return;
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setState(() {
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uploading = false;
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uploaded = true;
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resultUrl = null;
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});
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}
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Future<void> generate() async {
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if (!uploaded) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('请先选择一张宠物照片')));
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return;
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}
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setState(() {
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generating = true;
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generationStep = 1;
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});
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for (var step = 2; step <= 4; step++) {
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await Future<void>.delayed(const Duration(milliseconds: 650));
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if (!mounted) return;
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setState(() => generationStep = step);
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}
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await Future<void>.delayed(const Duration(milliseconds: 500));
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if (!mounted) return;
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setState(() {
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generating = false;
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resultUrl = selectedStyle.image;
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titleController.text = mode == CreationMode.image
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? '豆豆的${selectedStyle.title}冒险'
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: '豆豆的 AI 萌宠短片';
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contentController.text = '刚刚用 Patbond 创作了新作品，快来看看豆豆的新造型吧！✨';
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});
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}
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Future<void> addTag() async {
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final controller = TextEditingController();
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final value = await showDialog<String>(
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context: context,
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builder: (context) => AlertDialog(
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title: const Text('添加话题'),
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content: TextField(
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controller: controller,
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autofocus: true,
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decoration: const InputDecoration(hintText: '输入话题名称'),
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('取消'),
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),
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FilledButton(
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onPressed: () => Navigator.pop(context, controller.text.trim()),
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child: const Text('添加'),
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),
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],
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),
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);
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controller.dispose();
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if (value == null || value.isEmpty || tags.contains(value)) return;
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setState(() => tags = [...tags, value]);
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}
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void publish() {
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if (resultUrl == null || titleController.text.trim().isEmpty) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('请先完成生成并填写标题')));
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return;
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}
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final post = PostModel(
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id: 'post_user_${DateTime.now().millisecondsSinceEpoch}',
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authorName: '萌宠新手（我）',
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authorAvatar: userAvatar,
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time: '刚刚',
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breedTag: 'AI创作',
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content:
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'${titleController.text.trim()}\n\n${contentController.text.trim()}',
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mainImage: resultUrl!,
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likes: 1,
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tags: [...tags, mode == CreationMode.image ? 'AI生图' : 'AI视频'],
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comments: const [],
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hasLiked: true,
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);
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widget.appState.publishPost(post);
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setState(() {
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uploaded = false;
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resultUrl = null;
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generationStep = 0;
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titleController.clear();
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contentController.clear();
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});
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widget.onPublished(post);
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}
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@override
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Widget build(BuildContext context) {
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return ListView(
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padding: const EdgeInsets.fromLTRB(16, 12, 16, 28),
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children: [
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SegmentedButton<CreationMode>(
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segments: const [
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ButtonSegment(
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value: CreationMode.image,
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icon: Icon(Icons.image_outlined),
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label: Text('AI 图片'),
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),
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ButtonSegment(
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value: CreationMode.video,
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icon: Icon(Icons.movie_creation_outlined),
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label: Text('AI 视频'),
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),
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],
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selected: {mode},
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showSelectedIcon: false,
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onSelectionChanged: (value) => setState(() {
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mode = value.first;
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resultUrl = null;
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}),
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),
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const SizedBox(height: 16),
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_UploadCard(
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uploaded: uploaded,
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uploading: uploading,
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imageUrl: widget.appState.pet.avatarUrl,
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onTap: simulateUpload,
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onRemove: () => setState(() {
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uploaded = false;
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resultUrl = null;
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}),
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),
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const SizedBox(height: 16),
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SectionCard(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text('生成设置', style: Theme.of(context).textTheme.titleMedium),
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const SizedBox(height: 14),
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DropdownButtonFormField<String>(
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initialValue: selectedModel,
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decoration: const InputDecoration(labelText: '创作模型'),
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items: ['Patbond-V1', 'Pet-Art Pro', 'Cute Motion']
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.map(
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(model) =>
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DropdownMenuItem(value: model, child: Text(model)),
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)
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.toList(),
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onChanged: (value) {
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if (value != null) setState(() => selectedModel = value);
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},
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),
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if (mode == CreationMode.video) ...[
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const SizedBox(height: 12),
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_ChoiceRow(
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title: '视频时长',
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values: const ['5 秒', '10 秒', '15 秒'],
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selected: duration,
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onChanged: (value) => setState(() => duration = value),
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),
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],
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const SizedBox(height: 12),
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_ChoiceRow(
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title: '分辨率',
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values: const ['720P', '1080P', '2K'],
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selected: resolution,
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onChanged: (value) => setState(() => resolution = value),
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),
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SwitchListTile.adaptive(
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contentPadding: EdgeInsets.zero,
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title: const Text('高清增强'),
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subtitle: const Text('提升毛发与眼睛细节'),
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value: upscaling,
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onChanged: (value) => setState(() => upscaling = value),
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),
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],
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),
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),
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const SizedBox(height: 18),
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Text('热门风格', style: Theme.of(context).textTheme.titleLarge),
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const SizedBox(height: 10),
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SizedBox(
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height: 150,
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child: ListView.separated(
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scrollDirection: Axis.horizontal,
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itemCount: creationStyles.length,
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separatorBuilder: (_, _) => const SizedBox(width: 10),
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itemBuilder: (context, index) {
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final style = creationStyles[index];
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final selected = style.id == selectedStyle.id;
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return InkWell(
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onTap: () => setState(() {
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selectedStyle = style;
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resultUrl = null;
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}),
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borderRadius: BorderRadius.circular(20),
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child: Container(
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width: 125,
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decoration: BoxDecoration(
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border: Border.all(
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color: selected ? AppColors.primary : AppColors.border,
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width: selected ? 2 : 1,
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),
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borderRadius: BorderRadius.circular(20),
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),
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child: Stack(
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fit: StackFit.expand,
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children: [
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RemoteImage(
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url: style.image,
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borderRadius: BorderRadius.circular(18),
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),
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DecoratedBox(
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(18),
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gradient: const LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [Colors.transparent, Color(0xCC0F172A)],
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),
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),
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),
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Positioned(
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left: 12,
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right: 12,
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bottom: 10,
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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style.title,
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style: const TextStyle(
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color: Colors.white,
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fontWeight: FontWeight.w800,
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),
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),
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Text(
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style.subtitle,
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style: const TextStyle(
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color: Color(0xFFE2E8F0),
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fontSize: 10,
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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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const SizedBox(height: 18),
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if (generating) _GenerationProgress(step: generationStep),
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FilledButton.icon(
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style: FilledButton.styleFrom(
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minimumSize: const Size.fromHeight(52),
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backgroundColor: AppColors.ink,
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),
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onPressed: generating ? null : generate,
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icon: generating
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? const SizedBox.square(
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dimension: 18,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: Colors.white,
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),
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)
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: const Icon(Icons.auto_awesome),
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label: Text(generating ? '正在生成…' : '开始生成'),
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),
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if (resultUrl != null) ...[
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const SizedBox(height: 18),
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SectionCard(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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const Icon(Icons.check_circle, color: AppColors.success),
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const SizedBox(width: 8),
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Text(
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'生成完成',
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style: Theme.of(context).textTheme.titleMedium,
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),
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],
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),
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const SizedBox(height: 14),
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AspectRatio(
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aspectRatio: 16 / 10,
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child: RemoteImage(
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url: resultUrl!,
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borderRadius: BorderRadius.circular(18),
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),
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),
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const SizedBox(height: 14),
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TextField(
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controller: titleController,
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decoration: const InputDecoration(labelText: '发布标题（必填）'),
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),
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const SizedBox(height: 12),
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TextField(
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controller: contentController,
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maxLines: 3,
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decoration: const InputDecoration(labelText: '分享正文'),
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),
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const SizedBox(height: 12),
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Wrap(
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spacing: 8,
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runSpacing: 8,
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children: [
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...tags.map(
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(tag) => InputChip(
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label: Text('#$tag'),
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onDeleted: () => setState(
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() =>
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tags = tags.where((item) => item != tag).toList(),
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),
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),
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),
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ActionChip(
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avatar: const Icon(Icons.add, size: 16),
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label: const Text('话题'),
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onPressed: addTag,
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),
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],
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),
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const SizedBox(height: 14),
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const ListTile(
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contentPadding: EdgeInsets.zero,
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leading: Icon(Icons.location_on_outlined),
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title: Text('北京市 · 朝阳区'),
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trailing: Icon(Icons.chevron_right),
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),
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FilledButton.icon(
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style: FilledButton.styleFrom(
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minimumSize: const Size.fromHeight(48),
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),
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onPressed: publish,
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icon: const Icon(Icons.send_rounded),
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label: const Text('发布到社区'),
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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 _UploadCard extends StatelessWidget {
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const _UploadCard({
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required this.uploaded,
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required this.uploading,
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required this.imageUrl,
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required this.onTap,
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required this.onRemove,
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});
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final bool uploaded;
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final bool uploading;
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final String imageUrl;
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final VoidCallback onTap;
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final VoidCallback onRemove;
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@override
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Widget build(BuildContext context) {
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return SectionCard(
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child: SizedBox(
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height: 190,
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width: double.infinity,
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child: uploading
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? const Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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CircularProgressIndicator(),
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SizedBox(height: 12),
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Text('正在读取宠物照片…'),
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],
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)
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: uploaded
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? Stack(
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fit: StackFit.expand,
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children: [
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RemoteImage(
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url: imageUrl,
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borderRadius: BorderRadius.circular(18),
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),
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Positioned(
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right: 8,
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top: 8,
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child: IconButton.filled(
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tooltip: '移除照片',
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onPressed: onRemove,
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icon: const Icon(Icons.close),
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),
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),
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],
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)
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: InkWell(
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onTap: onTap,
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borderRadius: BorderRadius.circular(18),
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child: const Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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CircleAvatar(
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radius: 28,
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child: Icon(Icons.add_photo_alternate_outlined),
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),
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SizedBox(height: 12),
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Text(
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'选择宠物照片',
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style: TextStyle(fontWeight: FontWeight.w800),
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),
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SizedBox(height: 4),
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Text('演示模式会读取豆豆的档案头像'),
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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 _ChoiceRow extends StatelessWidget {
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const _ChoiceRow({
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required this.title,
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required this.values,
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required this.selected,
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required this.onChanged,
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});
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final String title;
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final List<String> values;
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final String selected;
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final ValueChanged<String> onChanged;
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@override
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Widget build(BuildContext context) {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(title, style: Theme.of(context).textTheme.bodySmall),
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const SizedBox(height: 7),
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Wrap(
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spacing: 8,
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children: values
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.map(
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(value) => ChoiceChip(
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label: Text(value),
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selected: value == selected,
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onSelected: (_) => onChanged(value),
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),
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)
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.toList(),
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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 _GenerationProgress extends StatelessWidget {
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const _GenerationProgress({required this.step});
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final int step;
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@override
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Widget build(BuildContext context) {
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const labels = ['分析宠物特征', '加载风格模型', '生成画面细节', '高清增强与合成'];
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return Padding(
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padding: const EdgeInsets.only(bottom: 14),
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child: SectionCard(
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child: Column(
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children: [
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LinearProgressIndicator(value: step / labels.length),
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const SizedBox(height: 12),
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for (var index = 0; index < labels.length; index++)
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ListTile(
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dense: true,
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contentPadding: EdgeInsets.zero,
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leading: Icon(
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index < step ? Icons.check_circle : Icons.circle_outlined,
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color: index < step ? AppColors.success : AppColors.muted,
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size: 20,
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),
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title: Text(labels[index]),
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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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