fix: improve algorithm for size selection resulting

Plugin/Util/ContainerSizes.cs

@@ -13,28 +13,23 @@ struct ContainerSize
 
         public static readonly ContainerSize[] PossibleContainerSizes =
            (new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 })
-           .SelectMany((int i) =>
-               (new int[] { 1, 2, 3, 4, 5, 6, 7, 8 })
-               .Select((int j) =>
-               new ContainerSize() { Height = i, Width = j }))
-           .Distinct(new ContainerSizeComparer())
-           .OrderBy((ContainerSize container) => container.Size)
-           .ToArray();
-
-        /// <summary>
-        /// this comparer used to filter out equal sizes with different Width/Height
-        /// </summary>
-        private class ContainerSizeComparer : IEqualityComparer<ContainerSize>
-        {
-            public bool Equals(ContainerSize x, ContainerSize y)
-            {
-                return x.Size == y.Size;
-            }
-
-            public int GetHashCode(ContainerSize obj)
-            {
-                return obj.Size;
-            }
-        }
+            .SelectMany((int i) =>
+                (new int[] { 1, 2, 3, 4, 5, 6, 7, 8 })
+                .Select((int j) =>
+                    new ContainerSize() { Height = i, Width = j }))
+            // group by all available sizes
+            .GroupBy(container => container.Size)
+            // select closest to square shape in each group, because it's most usable one
+            .Select(containers => containers
+                .OrderBy(container => Math.Abs(container.Height - container.Width))
+                .First())
+            .OrderBy(container => container.Size)
+            // exclude thin and long containers, because they don't look good in UI
+            .Where(container => !(container.Width < 5 && container.Height - container.Width > 5))
+            // prefer width over heigh if possible
+            .Select(container => (container.Height > container.Width && container.Height <= 8)
+                ? new ContainerSize() { Height = container.Width, Width = container.Height }
+                : container)
+            .ToArray();
     }
 }