From 6a8d05d99df98d327b3dc88fda7e86dd805768fb Mon Sep 17 00:00:00 2001
From: shun-iwasawa <shun-iwasawa@users.noreply.github.com>
Date: Jul 12 2018 05:48:43 +0000
Subject: fix viewer update on onionskin change (#2125)



---

diff --git a/toonz/sources/toonz/sceneviewer.cpp b/toonz/sources/toonz/sceneviewer.cpp
index 1f50118..0cd90ed 100644
--- a/toonz/sources/toonz/sceneviewer.cpp
+++ b/toonz/sources/toonz/sceneviewer.cpp
@@ -744,7 +744,7 @@ void SceneViewer::showEvent(QShowEvent *) {
           SLOT(update()));
 
   connect(app->getCurrentOnionSkin(), SIGNAL(onionSkinMaskChanged()), this,
-          SLOT(update()));
+          SLOT(onOnionSkinMaskChanged()));
 
   connect(app->getCurrentLevel(), SIGNAL(xshLevelChanged()), this,
           SLOT(update()));
diff --git a/toonz/sources/toonz/sceneviewer.h b/toonz/sources/toonz/sceneviewer.h
index cfd4906..05c6a47 100644
--- a/toonz/sources/toonz/sceneviewer.h
+++ b/toonz/sources/toonz/sceneviewer.h
@@ -403,6 +403,7 @@ public slots:
   // for Ink&Paint work properly
   void onLevelSwitched();
   void onFrameSwitched();
+  void onOnionSkinMaskChanged() { GLInvalidateAll(); }
 
   void setReferenceMode(int referenceMode);
   void enablePreview(int previewMode);