From d661516b025d5a3a9e11ca537198902061a6d158 Mon Sep 17 00:00:00 2001
From: Thomas Geymayer <tomgey@gmail.com>
Date: Wed, 13 Feb 2013 12:09:15 +0100
Subject: [PATCH] Expose whether CanvasElement is visible

---
 simgear/canvas/elements/CanvasElement.cxx | 6 ++++++
 simgear/canvas/elements/CanvasElement.hxx | 5 +++++
 2 files changed, 11 insertions(+)

diff --git a/simgear/canvas/elements/CanvasElement.cxx b/simgear/canvas/elements/CanvasElement.cxx
index e11e563b..ca4f6c76 100644
--- a/simgear/canvas/elements/CanvasElement.cxx
+++ b/simgear/canvas/elements/CanvasElement.cxx
@@ -210,6 +210,12 @@ namespace canvas
     return true;
   }
 
+  //----------------------------------------------------------------------------
+  bool Element::isVisible() const
+  {
+    return _transform->getNodeMask() != 0;
+  }
+
   //----------------------------------------------------------------------------
   osg::ref_ptr<osg::MatrixTransform> Element::getMatrixTransform()
   {
diff --git a/simgear/canvas/elements/CanvasElement.hxx b/simgear/canvas/elements/CanvasElement.hxx
index 39bdd2bc..e6cd3012 100644
--- a/simgear/canvas/elements/CanvasElement.hxx
+++ b/simgear/canvas/elements/CanvasElement.hxx
@@ -82,6 +82,11 @@ namespace canvas
       virtual bool hitBound( const osg::Vec2f& pos,
                              const osg::Vec2f& local_pos ) const;
 
+      /**
+       * Get whether the element is visible or hidden (Can be changed with
+       * setting property "visible" accordingly).
+       */
+      bool isVisible() const;
 
       osg::ref_ptr<osg::MatrixTransform> getMatrixTransform();
 
-- 
2.39.5