Fixed descriptions not being updated when the item is hovered

Closes #47

Author: justalemon

LemonUI/Menus/NativeMenu.cs

@@ -1019,12 +1019,10 @@ private void UpdateItems()
             // Set the position of the rectangle that marks the current item
             selectedRect.Position = new PointF(pos.X, pos.Y + ((index - firstItem) * itemHeight));
             // And then do the description background and text
-            descriptionText.Text = Items.Count == 0 || SelectedIndex == -1 ? NoItemsText : SelectedItem.Description;
             float description = pos.Y + ((Items.Count > maxItems ? maxItems : Items.Count) * itemHeight) + heightDiffDescImg;
-            int lineCount = descriptionText.LineCount;
-            descriptionRect.Size = new SizeF(width, (lineCount * (descriptionText.LineHeight + 5)) + (lineCount - 1) + 10);
             descriptionRect.Position = new PointF(pos.X, description);
             descriptionText.Position = new PointF(pos.X + posXDescTxt, description + heightDiffDescTxt);
+            UpdateDescription();
 
             // Save the size of the items
             SizeF size = new SizeF(width, itemHeight);
@@ -1043,6 +1041,15 @@ private void UpdateItems()
             RecalculatePanel();
         }
         /// <summary>
+        /// Updates the size and text of the description.
+        /// </summary>
+        private void UpdateDescription()
+        {
+            descriptionText.Text = Items.Count == 0 || SelectedIndex == -1 ? NoItemsText : SelectedItem.Description;
+            int lineCount = descriptionText.LineCount;
+            descriptionRect.Size = new SizeF(width, (lineCount * (descriptionText.LineHeight + 5)) + (lineCount - 1) + 10);
+        }
+        /// <summary>
         /// Processes the button presses.
         /// </summary>
         private void ProcessControls()
@@ -1525,17 +1532,19 @@ public void Clear()
         /// </summary>
         public void Process()
         {
-            // If the menu is not visible, return
             if (!visible)
             {
                 return;
             }
 
-            // Otherwise, draw the elements
+            NativeItem selected = SelectedItem;
+            if (selected != null && descriptionText.Text != selected.Description)
+            {
+                UpdateDescription();
+            }
+
             Draw();
-            // And then work on the controls
             ProcessControls();
-            // And finish by drawing the instructional buttons
             Buttons.Draw();
         }
         /// <summary>

LemonUI/Menus/NativeSubmenuItem.cs

@@ -42,13 +42,28 @@ public NativeSubmenuItem(NativeMenu menu, NativeMenu parent, string endlabel) :
 
         #endregion
 
+        #region Functions
+
+        /// <inheritdoc/>
+        public override void Draw()
+        {
+            // There is no Process(), so let's use draw to update the description
+            if (Description != Menu.Description)
+            {
+                Description = Menu.Description;
+            }
+
+            base.Draw();
+        }
+
+        #endregion
+
         #region Local Events
 
         private void NativeSubmenuItem_Activated(object sender, EventArgs e)
         {
-            // Try to close the parent menu
             Menu.Parent.Visible = false;
-            // And show the menu only if the parent menu is closed
+
             if (!Menu.Parent.Visible)
             {
                 Menu.Visible = true;