#1392 Improve Dark 3D-View background support

ApplicationCode/Application/Tools/RiaColorTools.cpp

@@ -0,0 +1,61 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2017     Statoil ASA
+// 
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+// 
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+// 
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html> 
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#include "RiaColorTools.h"
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+bool RiaColorTools::isBrightnessAboveThreshold(cvf::Color3f backgroundColor)
+{
+    if (backgroundColor.r() + backgroundColor.g() + backgroundColor.b() > 1.5f)
+    {
+        return true;
+    }
+
+    return false;
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+cvf::Color3f RiaColorTools::darkContrastColor()
+{
+    return cvf::Color3f::fromByteColor(10, 10, 10);
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+cvf::Color3f RiaColorTools::brightContrastColor()
+{
+    return cvf::Color3f::WHITE;
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+cvf::Color3f RiaColorTools::constrastColor(cvf::Color3f backgroundColor)
+{
+    if (isBrightnessAboveThreshold(backgroundColor))
+    {
+        return darkContrastColor();
+    }
+ 
+    return brightContrastColor();
+}