Added DisplaySettings::s/getApplication() to help with gecko plugin initialization when it requires the application name

include/osg/DisplaySettings

@@ -195,6 +195,9 @@ class OSG_EXPORT DisplaySettings : public osg::Referenced
 
         /** Get the hint for number of threads in the DatbasePager dedicated to reading http requests.*/
         unsigned int getNumOfHttpDatabaseThreadsHint() const { return _numHttpDatabaseThreadsHint; }
+        
+        void setApplication(const std::string& application) { _application = application; }
+        const std::string& getApplication() { return _application; }
 
     protected:
     
@@ -234,6 +237,8 @@ class OSG_EXPORT DisplaySettings : public osg::Referenced
 
         unsigned int                    _numDatabaseThreadsHint;
         unsigned int                    _numHttpDatabaseThreadsHint;
+        
+        std::string                     _application;
 
 };
 

src/osg/DisplaySettings.cpp

@@ -77,6 +77,8 @@ void DisplaySettings::setDisplaySettings(const DisplaySettings& vs)
     
     _numDatabaseThreadsHint = vs._numDatabaseThreadsHint;
     _numHttpDatabaseThreadsHint = vs._numHttpDatabaseThreadsHint;
+    
+    _application = vs._application;
 }
 
 void DisplaySettings::merge(const DisplaySettings& vs)
@@ -98,6 +100,8 @@ void DisplaySettings::merge(const DisplaySettings& vs)
 
     if (vs._numDatabaseThreadsHint>_numDatabaseThreadsHint) _numDatabaseThreadsHint = vs._numDatabaseThreadsHint;
     if (vs._numHttpDatabaseThreadsHint>_numHttpDatabaseThreadsHint) _numHttpDatabaseThreadsHint = vs._numHttpDatabaseThreadsHint;
+
+    if (_application.empty()) _application = vs._application;
 }
 
 void DisplaySettings::setDefaults()
@@ -375,6 +379,7 @@ void DisplaySettings::readEnvironmentalVariables()
 
 void DisplaySettings::readCommandLine(ArgumentParser& arguments)
 {
+    if (_application.empty()) _application = arguments[0];
 
     // report the usage options.
     if (arguments.getApplicationUsage())