Able to resize existing shapes

EduNetworkBuilder/NetShape.cs

@@ -105,9 +105,9 @@ namespace EduNetworkBuilder
             int fY = ClickPoint.Y;
             int halfWidth = InArea.Width / 2;
             int halfHeight = InArea.Height / 2;
-            if (ClickPoint.X < InArea.X + halfWidth) fX = InArea.X;
+            if (ClickPoint.X > InArea.X + halfWidth) fX = InArea.X;
             else fX = InArea.X + InArea.Width;
-            if (ClickPoint.Y < InArea.Y + halfHeight) fY = InArea.Y;
+            if (ClickPoint.Y > InArea.Y + halfHeight) fY = InArea.Y;
             else fY = InArea.Y + InArea.Height;
             return new Point(fX, fY);
 

EduNetworkBuilder/Network.cs

@@ -485,6 +485,25 @@ namespace EduNetworkBuilder
             return Dest;
         }
 
+        /// <summary>
+        /// this is a reverse of clickedPos.  Translate an image x/y to a picturebox location
+        /// </summary>
+        /// <param name="ImageLocation">The location on the backgroundimage</param>
+        /// <returns></returns>
+        public Point PictureBoxPoint(Point ImageLocation)
+        {
+            if (myPBox == null) return new Point(-1, -1);
+            double deltaX = (double)TheNetImage.Width / myPBox.Width;
+            double deltaY = (double)TheNetImage.Height / myPBox.Height;
+            Point Dest = new Point((int)(ImageLocation.X / deltaX), (int)(ImageLocation.Y / deltaY));
+            if (Dest.X > TheNetImage.Width) Dest = new Point(TheNetImage.Width, Dest.Y);
+            if (Dest.Y > TheNetImage.Height) Dest = new Point(Dest.X, TheNetImage.Height);
+            if (Dest.X < 0) Dest = new Point(0, Dest.Y);
+            if (Dest.Y < 0) Dest = new Point(Dest.X, 0);
+
+            return Dest;
+        }
+
         public Point clickedPosCentered(Point pixelClickedOn)
         {
             Point NetPoint = clickedPos(pixelClickedOn);
@@ -1120,6 +1139,16 @@ namespace EduNetworkBuilder
             Shapes.Add(what);
         }
 
+        public NetShape ShapeAtPoint(Point location)
+        {
+            foreach(NetShape shape in Shapes)
+            {
+                if (shape.CornersAreClickedOn(location))
+                    return shape;
+            }
+            return null;
+        }
+
         void KillAllExtraWindows(bool EvenRTF=false)
         {
             for(int i = Application.OpenForms.Count -1; i >=0; i--)

EduNetworkBuilder/NetworkBuilder.cs

@@ -54,6 +54,7 @@ namespace EduNetworkBuilder
         private Point OrigClickPoint = new Point(-1, -1);
 
         private NetShapeType CurrentShape = NetShapeType.none;
+        private NetShape ShapeForEditing = null;
 
         private string InitialFileLoad = "";
 
@@ -1505,10 +1506,22 @@ namespace EduNetworkBuilder
                             Color LineColor = Color.FromName(lColor);
                             if (LineColor.Name != "Empty" || FillColor.Name != "Empty")
                             {
+                                if (ShapeForEditing == null)
+                                { 
                                 NetShape NS = new NetShape(CurrentShape, selectbox, FillColor, LineColor);
 
                                 myNetwork.AddShape(NS);
                                 UpdateForm();
+                                }
+                                else
+                                {
+                                    ShapeForEditing.MyShape = CurrentShape;
+                                    ShapeForEditing.InArea = selectbox;
+                                    ShapeForEditing.FillColor = FillColor;
+                                    ShapeForEditing.LineColor = LineColor;
+                                    UpdateForm();
+
+                                }
                             }
                         }
                         catch
@@ -1638,7 +1651,26 @@ namespace EduNetworkBuilder
             OrigClickPoint = myNetwork.clickedPosCentered(e.Location);
             ClickedImageLocation = e.Location;
             //See if we have clicked on something
-            ItemClickedOn = myNetwork.ItemAtPosition(location);
+            if (!myNetwork.InShapeEditMode)
+            {
+                ItemClickedOn = myNetwork.ItemAtPosition(location);
+                ShapeForEditing = null;
+            }
+            else
+            {
+                ItemClickedOn = null;
+                ShapeForEditing = myNetwork.ShapeAtPoint(location);
+                if(ShapeForEditing != null)
+                {
+                    //we set the drag-point for the opposite corner
+                    ClickedLocation = ShapeForEditing.OppositePoint(location);
+                    ClickedImageLocation = myNetwork.PictureBoxPoint(ClickedLocation);
+                    CurrentShape = ShapeForEditing.MyShape;
+                    cbFillColor.Text = ShapeForEditing.FillColor.Name;
+                    cbLineColor.Text = ShapeForEditing.LineColor.Name;
+                    btnUpdateShape(); //Change the shape to what we are editing
+                }
+            }
             if(e.Button == MouseButtons.Left)
                 MouseIsDown = true;
             LastMouseDown = DateTime.UtcNow;