upgraded waterfallpanel

src/Shared/HandyControl_Shared/Data/PanelUvSize.cs

@@ -0,0 +1,70 @@
+using System.Windows;
+using System.Windows.Controls;
+
+namespace HandyControl.Data
+{
+    internal struct PanelUvSize
+    {
+        private readonly Orientation _orientation;
+
+        public Size ScreenSize => new(U, V);
+
+        public double U { get; set; }
+
+        public double V { get; set; }
+
+        public double Width
+        {
+            get => _orientation == Orientation.Horizontal ? U : V;
+            private set
+            {
+                if (_orientation == Orientation.Horizontal)
+                {
+                    U = value;
+                }
+                else
+                {
+                    V = value;
+                }
+            }
+        }
+
+        public double Height
+        {
+            get => _orientation == Orientation.Horizontal ? V : U;
+            private set
+            {
+                if (_orientation == Orientation.Horizontal)
+                {
+                    V = value;
+                }
+                else
+                {
+                    U = value;
+                }
+            }
+        }
+
+        public PanelUvSize(Orientation orientation, double width, double height)
+        {
+            U = V = 0d;
+            _orientation = orientation;
+            Width = width;
+            Height = height;
+        }
+
+        public PanelUvSize(Orientation orientation, Size size)
+        {
+            U = V = 0d;
+            _orientation = orientation;
+            Width = size.Width;
+            Height = size.Height;
+        }
+
+        public PanelUvSize(Orientation orientation)
+        {
+            U = V = 0d;
+            _orientation = orientation;
+        }
+    }
+}