Fix gas pressure inputs in egs_inprz and egs_gui

Add an input for gas pressure in egs_gui if medium is a gas.

Disable "medium is gas" check box if a density correction file is used:
in this case density corrections are taken from the file and are not
calculated based on the gasp input value.

HEN_HOUSE/gui/egs_gui/pegs_page.cpp

@@ -224,6 +224,22 @@ void EGS_PegsPage::densityIcruChanged( bool is_on) {
  dc_group->setEnabled( is_on );
  rho_group->setEnabled( !is_on );
  medtype_cbox->setEnabled( !is_on );
+ is_gas->setEnabled( !is_on );
+ enable_gaspEdit();
+}
+
+void EGS_PegsPage::enable_gaspEdit()
+{
+ if(is_gas->isChecked() && !dc_icru_check->isChecked()) {
+ gaspLabel->setEnabled(true);
+ gaspEdit->setEnabled(true);
+ gaspUnits->setEnabled(true);
+ }
+ else {
+ gaspLabel->setEnabled(false);
+ gaspEdit->setEnabled(false);
+ gaspUnits->setEnabled(false);
+ }
 }
 
 void EGS_PegsPage::medtypeChanged( const QString &s )
@@ -422,7 +438,7 @@ void EGS_PegsPage::startPegs() {
  }
  if( comboBox2->currentText() == "kg/m**3" ) rho *= 0.001;//convert to g/cm**3
  ts << rho;
- if( is_gas->isChecked() ) ts << ",GASP=1.0";
+ if( is_gas->isChecked() && !dc_icru_check->isChecked() && gaspEdit->text().toFloat()>0.0) ts << ",GASP= " << gaspEdit->text();
  ts << ",EPSTFL=" << dc_icru_check->isChecked() << ",IAPRIM="
  << rad_icru_check->isChecked() << ",IRAYL=" << rayleigh_check->isChecked()
  << " &END\n";

HEN_HOUSE/gui/egs_gui/pegs_page.h

@@ -115,6 +115,7 @@ public slots:
  void outputClosed();
  void launchReturned();
  void setConfigReader(EGS_ConfigReader *r);
+ void enable_gaspEdit();
 
 protected:
  void init();