Flowchart

AIStudio.Wpf.DiagramDesigner/Helpers/EnumExtension.cs

@@ -6,6 +6,17 @@ namespace AIStudio.Wpf.DiagramDesigner
 {
     public static class EnumExtension
     {
+        /// <summary>
+        /// Converts to enum.
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="str">The string.</param>
+        /// <returns></returns>
+        public static T ToEnum<T>(this string str)
+        {
+            return (T)Enum.Parse(typeof(T), str);
+        }
+
         public static string GetDescription(this Enum value)
         {
             FieldInfo field = value.GetType().GetField(value.ToString());

AIStudio.Wpf.DiagramDesigner/Helpers/ScreenHelper.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Drawing;
+using System.Runtime.InteropServices;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public static class ScreenHelper
+    {
+        [DllImport("user32.dll", EntryPoint = "ReleaseDC")]
+        public static extern IntPtr ReleaseDC(
+            IntPtr hWnd,
+            IntPtr hDc
+            );
+
+        [DllImport("gdi32.dll")]
+        public static extern int GetDeviceCaps(
+            IntPtr hdc, // handle to DC
+            int nIndex // index of capability
+            );
+
+        public static System.Drawing.Size GetPhysicalDisplaySize()
+        {
+            Graphics g = Graphics.FromHwnd(IntPtr.Zero);
+            IntPtr desktop = g.GetHdc();
+            int physicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.Desktopvertres);
+            int physicalScreenWidth = GetDeviceCaps(desktop, (int)DeviceCap.Desktophorzres);
+            ReleaseDC(IntPtr.Zero, desktop);
+            g.Dispose();
+            return new System.Drawing.Size(physicalScreenWidth, physicalScreenHeight);
+        }
+
+        public enum DeviceCap
+        {
+            Desktopvertres = 117,
+            Desktophorzres = 118
+        }
+
+        public static double ResetScreenScale()
+        {
+            using (var g = Graphics.FromHwnd(IntPtr.Zero))
+            {
+                IntPtr desktop = g.GetHdc();
+                int physicalScreenWidth = GetDeviceCaps(desktop, (int)DeviceCap.Desktophorzres);
+                return physicalScreenWidth * 1.0000 / System.Windows.SystemParameters.PrimaryScreenWidth;
+            }
+        }
+    }
+}

AIStudio.Wpf.DiagramDesigner/Helpers/ToolBoxData.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Windows;
 
 namespace AIStudio.Wpf.DiagramDesigner.Helpers
 {
@@ -13,16 +14,18 @@ namespace AIStudio.Wpf.DiagramDesigner.Helpers
         public IColorViewModel ColorViewModel { get; set; }
         public double Width { get; set; }
         public double Height { get; set; } 
+        public Size? DesiredSize{ get; set; } 
 
         public object Addition { get; set; }
 
-        public ToolBoxData(string text, string icon, Type type, double width, double height)
+        public ToolBoxData(string text, string icon, Type type, double width, double height, Size? desiredSize = null)
         {
             this.Text = text;
             this.Icon = icon;
             this.Type = type;
             this.Width = width;
-            this.Height = height; 
+            this.Height = height;
+            this.DesiredSize = desiredSize;
             this.ColorViewModel = new ColorViewModel();
         }
     }