Initial commit

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-05 10:38:11 +07:00
commit 2d26ea8f90
1071 changed files with 100151 additions and 0 deletions
@@ -0,0 +1,94 @@
+import 'dart:ui';
+
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+import 'package:hjsq/assets_tool/images.dart';
+import 'package:hjsq/hj_utils/screen.dart';
+import 'package:hjsq/tools_base/cache/image_cache_manager.dart';
+
+class NetworkImageLoader extends StatelessWidget {
+  final String? imageUrl;
+  final double? width;
+  final double? height;
+  final BoxFit fit;
+  final Alignment alignment;
+
+  final double borderRadius;
+  final BorderRadius? imgBorderRadius;
+  final bool blur; //高斯模糊
+  final bool encrypt; //是否需要加密
+  final Widget? placeHolderWidget;
+  final bool isResizeImage; //是否需要根据组件大小压缩
+
+  const NetworkImageLoader({
+    super.key,
+    required this.imageUrl,
+    this.borderRadius = 8,
+    this.imgBorderRadius,
+    this.height,
+    this.fit = BoxFit.cover,
+    this.width,
+    this.blur = false,
+    this.alignment = Alignment.center,
+    this.encrypt = true,
+    this.placeHolderWidget,
+    this.isResizeImage = true,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(builder: (context, cons) {
+      Widget image = CachedNetworkImage(
+        alignment: alignment,
+        imageUrl: imageUrl ?? '',
+        width: width,
+        height: height,
+        fit: fit,
+        memCacheWidth: _memCacheWidth(cons),
+        // 默认 FilterQuality.low 用廉价 bilinear，iOS retina(dpr=3) 上肉眼可见的模糊
+        // medium 是质量/性能平衡点，high 会卡列表滚动
+        filterQuality: FilterQuality.medium,
+        cacheManager: encrypt ? ImageCacheManager() : null,
+        placeholder: (context, url) => _placeholder(),
+        errorWidget: (context, url, err) => _placeholder(),
+        fadeInCurve: Curves.linear,
+        fadeOutCurve: Curves.linear,
+      );
+      final radius = imgBorderRadius ?? BorderRadius.circular(borderRadius);
+      if (borderRadius != 0)
+        image = ClipRRect(borderRadius: radius, child: image);
+      //模糊会溢出边界，外面再裁一层
+      if (blur) {
+        image = ClipRRect(
+          borderRadius: radius,
+          child: ImageFiltered(
+              imageFilter: ImageFilter.blur(sigmaX: 5, sigmaY: 5),
+              child: image),
+        );
+      }
+      return image;
+    });
+  }
+
+  //resize的宽度
+  int _memCacheWidth(BoxConstraints cons) {
+    final dpr = screen.devicePixelRatio;
+    if (!isResizeImage) return (screen.screenWidth * dpr).toInt();
+    //约束无限时用屏幕宽兜底，避免退化成按原图解码（图片过载）
+    final w = (cons.maxWidth == double.infinity || cons.maxWidth.isNaN)
+        ? screen.screenWidth
+        : cons.maxWidth;
+    return (w * dpr).toInt();
+  }
+
+  Widget _placeholder() {
+    if (placeHolderWidget != null) return placeHolderWidget!;
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 2),
+      decoration: const BoxDecoration(color: Color(0xff151E2D)),
+      alignment: Alignment.center,
+      child: Image.asset('place_holder_logo.webp'.commonImgPath,
+          width: 100, height: 35),
+    );
+  }
+}