QgsExpressionContextScope* QgsExpressionContextUtils::projectScope()
{
QgsProject* project = QgsProject::instance();
QgsExpressionContextScope* scope = new QgsExpressionContextScope( QObject::tr( "Project" ) );
//add variables defined in project file
QStringList variableNames = project->readListEntry( "Variables", "/variableNames" );
QStringList variableValues = project->readListEntry( "Variables", "/variableValues" );
int varIndex = 0;
Q_FOREACH ( const QString& variableName, variableNames )
{
if ( varIndex >= variableValues.length() )
{
break;
}
QString varValueString = variableValues.at( varIndex );
varIndex++;
scope->setVariable( variableName, varValueString );
}
//add other known project variables
scope->addVariable( QgsExpressionContextScope::StaticVariable( "project_title", project->title(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "project_path", project->fileInfo().filePath(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "project_folder", project->fileInfo().dir().path(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( "project_filename", project->fileInfo().fileName(), true ) );
scope->addFunction( "project_color", new GetNamedProjectColor() );
return scope;
}
QgsExpressionContextScope* QgsExpressionContextUtils::projectScope( const QgsProject* project )
{
QgsExpressionContextScope* scope = new QgsExpressionContextScope( QObject::tr( "Project" ) );
if ( !project )
return scope;
const QVariantMap vars = project->customVariables();
QVariantMap::const_iterator it = vars.constBegin();
for ( ; it != vars.constEnd(); ++it )
{
scope->setVariable( it.key(), it.value() );
}
//add other known project variables
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_title" ), project->title(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_path" ), project->fileInfo().filePath(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_folder" ), project->fileInfo().dir().path(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_filename" ), project->fileInfo().fileName(), true ) );
QgsCoordinateReferenceSystem projectCrs = project->crs();
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_crs" ), projectCrs.authid(), true ) );
scope->addVariable( QgsExpressionContextScope::StaticVariable( QStringLiteral( "project_crs_definition" ), projectCrs.toProj4(), true ) );
scope->addFunction( QStringLiteral( "project_color" ), new GetNamedProjectColor() );
return scope;
}