fix: OutlinedTextBlock throwing when too small

HDTTests/OutlinedTextBlockTests.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Windows;
+using Hearthstone_Deck_Tracker;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace HDTTests
+{
+	[TestClass]
+	public class OutlinedTextBlockTests
+	{
+		[TestMethod]
+		public void MeasureOverride_BadSize_DoesNotThrow()
+		{
+			var textBlock = new TestTextBlock
+			{
+				TextWrapping = TextWrapping.NoWrap,
+				Text = "Test",
+				FontSize = 0.1
+			};
+			try
+			{
+				textBlock.CallMeasureOverride(new Size(0, 0));
+			}
+			catch(Exception e)
+			{
+				Assert.Fail(e.Message);
+			}
+		}
+
+		private class TestTextBlock : OutlinedTextBlock
+		{
+			public void CallMeasureOverride(Size availableSize)
+			{
+				MeasureOverride(availableSize);
+			}
+		}
+	}
+}

Hearthstone Deck Tracker/Controls/OutlinedTextBlock.cs

@@ -187,7 +187,7 @@ protected override Size MeasureOverride(Size availableSize)
 			var maxWidth = Math.Min(3579139, Math.Max(0.0001d, availableSize.Width));
 			var ratio = maxWidth / _formattedText.Width;
 			if(ratio < 1 && (TextWrapping == TextWrapping.NoWrap || ratio > 0.8))
-				_formattedText.SetFontSize((int)(FontSize * ratio));
+				_formattedText.SetFontSize(Math.Max(1, (int)FontSize * ratio));
 			_formattedText.MaxTextWidth = maxWidth;
 			_formattedText.MaxTextHeight = Math.Max(0.0001d, availableSize.Height);