VP1QtUtils.h

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/*
  Copyright (C) 2002-2017 CERN for the benefit of the ATLAS collaboration
*/
 
 
//                                                            //
//  Header file for class VP1QtUtils                          //
//                                                            //
//  Description: Misc. utilities.                             //
//                                                            //
//  Author: Thomas H. Kittelmann (Thomas.Kittelmann@cern.ch)  //
//  Initial version: April 2008                               //
//                                                            //
 
#ifndef VP1QTUTILS_H
#define VP1QTUTILS_H
 
#include <QString>
//NB: Keep includes very few here!
class QImage;
 
class VP1QtUtils {
public:
 
  //       For getting/setting environment variables        //
 
  static bool expertSettingIsSet(const QString& type, const QString& name);
  static QString expertSettingValue(const QString& type, const QString& name);
  static bool expertSettingIsOn(const QString& type, const QString& name);
  static void setExpertSetting(const QString& type, const QString& name, const QString& content);
 
  static bool environmentVariableIsSet( const QString& name );//If variable is at all defined (returns true if variable has value "0")
  static QString environmentVariableValue( const QString& name );//Returns "" if not defined.
  static bool environmentVariableIsOn( const QString& name );//Returns false if undefined or value is "0", "", "false"/"off"/"no" (any capitalisation). Otherwise returns true.
 
  static void setEnvironmentVariable( const QString& name, const QString& content );
  static void unsetEnvironmentVariable( const QString& name );
 
  //       Image manipulations        //
 
  static QImage fadeImage(QImage img0, QImage img1, double fadefact );
 
private:
  VP1QtUtils();
  ~VP1QtUtils();
};
 
#endif