mod: image save dialog

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/common/widgets/image_save.dart

@@ -0,0 +1,91 @@
+import 'package:PiliPalaX/common/constants.dart';
+import 'package:PiliPalaX/common/widgets/network_img_layer.dart';
+import 'package:PiliPalaX/utils/download.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_smart_dialog/flutter_smart_dialog.dart';
+
+void imageSaveDialog({
+  required BuildContext context,
+  required String? title,
+  required String? cover,
+}) {
+  final double imgWidth =
+      MediaQuery.sizeOf(context).width - StyleString.safeSpace * 2;
+  SmartDialog.show(
+    animationType: SmartAnimationType.centerScale_otherSlide,
+    builder: (context) => Container(
+      margin: const EdgeInsets.symmetric(horizontal: StyleString.safeSpace),
+      decoration: BoxDecoration(
+        color: Theme.of(context).colorScheme.surface,
+        borderRadius: BorderRadius.circular(10.0),
+      ),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Stack(
+            children: [
+              NetworkImgLayer(
+                width: imgWidth,
+                height: imgWidth / StyleString.aspectRatio,
+                src: cover,
+                quality: 100,
+              ),
+              Positioned(
+                right: 8,
+                top: 8,
+                child: Container(
+                  width: 30,
+                  height: 30,
+                  decoration: BoxDecoration(
+                      color: Colors.black.withOpacity(0.3),
+                      borderRadius:
+                          const BorderRadius.all(Radius.circular(20))),
+                  child: IconButton(
+                    style: ButtonStyle(
+                      padding: WidgetStateProperty.all(EdgeInsets.zero),
+                    ),
+                    onPressed: SmartDialog.dismiss,
+                    icon: const Icon(
+                      Icons.close,
+                      size: 18,
+                      color: Colors.white,
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          ),
+          Padding(
+            padding: const EdgeInsets.fromLTRB(12, 10, 8, 10),
+            child: Row(
+              children: [
+                Expanded(
+                  child: SelectableText(
+                    title ?? '',
+                    style: Theme.of(context).textTheme.titleSmall,
+                  ),
+                ),
+                const SizedBox(width: 4),
+                IconButton(
+                  tooltip: '保存封面图',
+                  onPressed: () async {
+                    bool saveStatus = await DownloadUtils.downloadImg(
+                      context,
+                      [cover ?? ''],
+                    );
+                    // 保存成功，自动关闭弹窗
+                    if (saveStatus) {
+                      SmartDialog.dismiss();
+                    }
+                  },
+                  icon: const Icon(Icons.download, size: 20),
+                )
+              ],
+            ),
+          ),
+        ],
+      ),
+    ),
+  );
+}