78 lines
2.2 KiB
Dart
78 lines
2.2 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:cached_network_image/cached_network_image.dart';
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/// 對話背景組件
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class DialogueBackground extends StatelessWidget {
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final String scenarioId;
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final String? backgroundUrl;
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const DialogueBackground({
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super.key,
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required this.scenarioId,
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this.backgroundUrl,
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});
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@override
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Widget build(BuildContext context) {
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return Container(
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width: double.infinity,
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height: double.infinity,
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child: Stack(
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fit: StackFit.expand,
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children: [
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// 背景圖片
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if (backgroundUrl != null)
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CachedNetworkImage(
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imageUrl: backgroundUrl!,
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fit: BoxFit.cover,
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placeholder: (context, url) => Container(
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color: Colors.grey[800],
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child: Center(
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child: CircularProgressIndicator(
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color: Theme.of(context).primaryColor,
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),
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),
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),
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errorWidget: (context, url, error) => Container(
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color: Colors.grey[800],
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child: Icon(
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Icons.image_not_supported,
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color: Colors.grey[600],
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size: 64,
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),
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),
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)
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else
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Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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Colors.blue[900]!,
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Colors.purple[900]!,
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],
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),
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),
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),
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// 漸層覆蓋層
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Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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Colors.black.withOpacity(0.3),
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Colors.transparent,
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Colors.black.withOpacity(0.7),
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],
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stops: const [0.0, 0.5, 1.0],
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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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} |