fixed draggable entities

GeonBit.UI.Examples/GeonBitUI_Examples.cs

@@ -280,6 +280,7 @@ protected void InitExamplesAndUI()
                 {
                     // create panel and add to list of panels and manager
                     Panel panel = new Panel(new Vector2(520, -1));
+                    panel.Draggable = true;
                     panels.Add(panel);
                     UserInterface.Active.AddEntity(panel);
 

GeonBit.UI/Source/Entities/Entity.cs

@@ -1861,9 +1861,9 @@ virtual public Rectangle CalcDestRect()
             if (_draggable)
             {
                 // if need to init dragged offset, set it
-                // this trick is used so if an object is draggable, we first evaluate its position based on anchor etc, and we use that
+                // this trick is used so if an object is draggable, we first evaluate its position based on anchor, and we use that
                 // position as starting point for the dragging
-                if (_needToSetDragOffset)
+                if (_needToSetDragOffset && (parentDest.Width > 0) && (parentDest.Height > 0) && (ret.Height > 1))
                 {
                     _dragOffset.X = ret.X - parent_left;
                     _dragOffset.Y = ret.Y - parent_top;

README.md

@@ -2100,6 +2100,7 @@ For older MonoGame versions, see [tag 2.1.0.0](https://github.com/RonenNess/Geon
 - Changed Button 'Value Changed' event to only emit if value actually changed.
 - Changed CheckBox 'Value Changed' event to only emit if value actually changed.
 - Fixed TextInput 'Value Changed' event to trigger when changing value externally.
+- Fixed offset for draggable panels that are not aligned top-left and visible in first update frame (used to have bug that changed their position to top left).
 
 ## Credits