From 4acf89cf96ffeff6a9c436884e9fec1af6b9af6a Mon Sep 17 00:00:00 2001
From: Hermet Park <chuneon.park@samsung.com>
Date: Thu, 10 Jun 2021 11:33:57 +0900
Subject: [PATCH] common canvas: ++ exception handling.

canvas update won't be performed if it's on drawing condition nor zero paints.
---
 src/lib/tvgCanvasImpl.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/tvgCanvasImpl.h b/src/lib/tvgCanvasImpl.h
index cce790e4..11fe8b95 100644
--- a/src/lib/tvgCanvasImpl.h
+++ b/src/lib/tvgCanvasImpl.h
@@ -82,7 +82,7 @@ struct Canvas::Impl
 
     Result update(Paint* paint, bool force)
     {
-        if (!renderer) return Result::InsufficientCondition;
+        if (paints.count == 0 || drawing || !renderer) return Result::InsufficientCondition;
 
         Array<RenderData> clips;
         auto flag = RenderUpdateFlag::None;