mod: longPress enlarge img

lib/common/widgets/animated_dialog.dart

@@ -0,0 +1,53 @@
+import 'package:flutter/material.dart';
+
+class AnimatedDialog extends StatefulWidget {
+  const AnimatedDialog({Key? key, required this.child}) : super(key: key);
+
+  final Widget child;
+
+  @override
+  State<StatefulWidget> createState() => AnimatedDialogState();
+}
+
+class AnimatedDialogState extends State<AnimatedDialog>
+    with SingleTickerProviderStateMixin {
+  late AnimationController? controller;
+  late Animation<double>? opacityAnimation;
+  late Animation<double>? scaleAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+
+    controller = AnimationController(
+        vsync: this, duration: const Duration(milliseconds: 800));
+    opacityAnimation = Tween<double>(begin: 0.0, end: 0.6).animate(
+        CurvedAnimation(parent: controller!, curve: Curves.easeOutExpo));
+    scaleAnimation =
+        CurvedAnimation(parent: controller!, curve: Curves.easeOutExpo);
+    controller!.addListener(() => setState(() {}));
+    controller!.forward();
+  }
+
+  @override
+  void dispose() {
+    controller!.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Material(
+      color: Colors.black.withOpacity(opacityAnimation!.value),
+      child: Center(
+        child: FadeTransition(
+          opacity: scaleAnimation!,
+          child: ScaleTransition(
+            scale: scaleAnimation!,
+            child: widget.child,
+          ),
+        ),
+      ),
+    );
+  }
+}