Major bug: Thumbnails can get resized randomly when placed on displays with different DPI

Eve-O-Preview/View/Implementation/ThumbnailView.cs

@@ -9,6 +9,10 @@ namespace EveOPreview.View
 {
 	public partial class ThumbnailView : Form, IThumbnailView
 	{
+		#region Private constants
+		private const int ResizeEventTimeout = 500;
+		#endregion
+
 		#region Private fields
 		private readonly IWindowManager _windowManager;
 		private readonly ThumbnailOverlay _overlay;
@@ -34,6 +38,8 @@ namespace EveOPreview.View
 
 		public ThumbnailView(IWindowManager windowManager)
 		{
+			this.SuppressResizeEvent();
+
 			this._windowManager = windowManager;
 
 			this.IsActive = false;
@@ -48,8 +54,6 @@ namespace EveOPreview.View
 
 			this._isHighlightEnabled = false;
 
-			this._suppressResizeEventsTimestamp = DateTime.UtcNow;
-
 			InitializeComponent();
 
 			this._overlay = new ThumbnailOverlay(this, this.MouseDown_Handler);
@@ -104,6 +108,8 @@ namespace EveOPreview.View
 
 		public new void Show()
 		{
+			this.SuppressResizeEvent();
+
 			base.Show();
 
 			this._isLocationChanged = true;
@@ -118,6 +124,8 @@ namespace EveOPreview.View
 
 		public new void Hide()
 		{
+			this.SuppressResizeEvent();
+
 			this.IsActive = false;
 
 			this._overlay.Hide();
@@ -126,6 +134,8 @@ namespace EveOPreview.View
 
 		public new void Close()
 		{
+			this.SuppressResizeEvent();
+
 			this.IsActive = false;
 			this._thumbnail?.Unregister();
 			this._overlay.Close();
@@ -165,9 +175,8 @@ namespace EveOPreview.View
 				return;
 			}
 
-			// Fix for WinForms issue with the Resize event being fired with inconsistent ClientSize value
-			// Any Resize events fired before this timestamp will be ignored
-			this._suppressResizeEventsTimestamp = DateTime.UtcNow.AddMilliseconds(450);
+			this.SuppressResizeEvent();
+
 			this.FormBorderStyle = style;
 
 			// Notify about possible contents position change
@@ -384,6 +393,13 @@ namespace EveOPreview.View
 			this._thumbnail.Move(0 + highlightWidthLeft, 0 + this._highlightWidth, baseWidth - highlightWidthRight, baseHeight - this._highlightWidth);
 		}
 
+		private void SuppressResizeEvent()
+		{
+			// Workaround for WinForms issue with the Resize event being fired with inconsistent ClientSize value
+			// Any Resize events fired before this timestamp will be ignored
+			this._suppressResizeEventsTimestamp = DateTime.UtcNow.AddMilliseconds(ThumbnailView.ResizeEventTimeout);
+		}
+
 		#region GUI events
 		protected override CreateParams CreateParams
 		{