init

2025-06-30 16:24:20 +08:00
commit 68de5eb048
454 changed files with 56921 additions and 0 deletions
@@ -0,0 +1,97 @@
+import 'dart:math';
+
+import 'package:flutter/material.dart';
+
+class TUIKitDragArea extends StatefulWidget {
+  final Widget child;
+  final Offset? initOffset;
+  final VoidCallback? closeFun;
+  final bool isAllowDrag;
+  final Color? backgroundColor;
+
+  const TUIKitDragArea(
+      {Key? key,
+      required this.child,
+      this.initOffset,
+      this.closeFun,
+      this.isAllowDrag = false, this.backgroundColor})
+      : super(key: key);
+
+  @override
+  _DragAreaStateStateful createState() => _DragAreaStateStateful();
+}
+
+class _DragAreaStateStateful extends State<TUIKitDragArea> {
+  late Offset position;
+  double prevScale = 1;
+  double scale = 1;
+
+  @override
+  void initState() {
+    super.initState();
+    position = widget.initOffset ?? const Offset(0, 200);
+  }
+
+  void updateScale(double zoom) => setState(() => scale = prevScale * zoom);
+
+  void commitScale() => setState(() => prevScale = scale);
+
+  void updatePosition(Offset newPosition) {
+    final maxY = MediaQuery.of(context).size.height - 100;
+    final maxX = MediaQuery.of(context).size.width - 100;
+
+    final rebuildPosition = Offset(
+        max(0, min(newPosition.dx, maxX)), max(0, min(newPosition.dy, maxY)));
+    position = rebuildPosition;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      color: widget.backgroundColor,
+      child: Stack(
+        children: [
+          Row(
+            children: [
+              Expanded(
+                  child: Column(
+                    children: [
+                      Expanded(
+                          child: GestureDetector(
+                            onTap: () {
+                              if (widget.closeFun != null) {
+                                widget.closeFun!();
+                              }
+                            },
+                            child: Container(
+                              color: Colors.transparent,
+                            ),
+                          )
+                      )
+                    ],
+                  ))
+            ],
+          ),
+          if (widget.isAllowDrag)
+            Positioned(
+              left: position.dx,
+              top: position.dy,
+              child: Draggable(
+                maxSimultaneousDrags: 1,
+                feedback: widget.child,
+                childWhenDragging: Container(),
+                onDragEnd: (details) => updatePosition(details.offset),
+                child: widget.child,
+              ),
+            ),
+          if (!widget.isAllowDrag)
+            Positioned(
+              left: position.dx,
+              top: position.dy,
+              child: widget.child,
+            )
+        ],
+      ),
+    );
+  }
+}