From a07cfc5b3bd369712e9f00df0e28e57f3177dc63 Mon Sep 17 00:00:00 2001
From: Tyler Hoeflicker <thoeflicker@bluebeam.com>
Date: Thu, 17 Nov 2016 10:59:48 -0800
Subject: [PATCH] add guards to setting colortable

---
 binding/Binding/SKBitmap.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/binding/Binding/SKBitmap.cs b/binding/Binding/SKBitmap.cs
index 4839aeec..fa964b59 100644
--- a/binding/Binding/SKBitmap.cs
+++ b/binding/Binding/SKBitmap.cs
@@ -14,6 +14,8 @@ namespace SkiaSharp
 {
 	public class SKBitmap : SKObject
 	{
+		const string UNSUPPORTED_CLR_TYPE_MSG = "Setting the ColorTable is only supported for bitmaps with ColorTypes of Index8";
+
 		[Preserve]
 		internal SKBitmap (IntPtr handle, bool owns)
 			: base (handle, owns)
@@ -195,10 +197,18 @@ namespace SkiaSharp
 		}
 
 		public void SetPixels(IntPtr pixels, SKColorTable ct = null) {
+			if (ct != null && ColorType != SKColorType.Index8)
+			{
+				throw new NotSupportedException(UNSUPPORTED_CLR_TYPE_MSG);
+			}
 			SkiaApi.sk_bitmap_set_pixels(Handle, pixels, ct != null ? ct.Handle : IntPtr.Zero);
 		}
 
 		public void SetColorTable(SKColorTable ct) {
+			if (ColorType != SKColorType.Index8)
+			{
+				throw new NotSupportedException(UNSUPPORTED_CLR_TYPE_MSG);
+			}
 			IntPtr length;
 			SetPixels(this.GetPixels(out length), ct);
 		}