C++ (Cpp) QgsProject::setAreaUnitsの例

コード例 #1

ファイル: testqgsproject.cpp プロジェクト: alexbruy/QGIS

void TestQgsProject::testProjectUnits()
{
  //test setting and retrieving project units

  // DISTANCE

  //first set a default QGIS distance unit
  QgsSettings s;
  s.setValue( QStringLiteral( "/qgis/measure/displayunits" ), QgsUnitTypes::encodeUnit( QgsUnitTypes::DistanceFeet ) );

  QgsProject *prj = new QgsProject;
  // new project should inherit QGIS default distance unit
  prj->clear();
  QCOMPARE( prj->distanceUnits(), QgsUnitTypes::DistanceFeet );

  //changing default QGIS unit should not affect existing project
  s.setValue( QStringLiteral( "/qgis/measure/displayunits" ), QgsUnitTypes::encodeUnit( QgsUnitTypes::DistanceNauticalMiles ) );
  QCOMPARE( prj->distanceUnits(), QgsUnitTypes::DistanceFeet );

  //test setting new units for project
  prj->setDistanceUnits( QgsUnitTypes::DistanceNauticalMiles );
  QCOMPARE( prj->distanceUnits(), QgsUnitTypes::DistanceNauticalMiles );

  // AREA

  //first set a default QGIS area unit
  s.setValue( QStringLiteral( "/qgis/measure/areaunits" ), QgsUnitTypes::encodeUnit( QgsUnitTypes::AreaSquareYards ) );

  // new project should inherit QGIS default area unit
  prj->clear();
  QCOMPARE( prj->areaUnits(), QgsUnitTypes::AreaSquareYards );

  //changing default QGIS unit should not affect existing project
  s.setValue( QStringLiteral( "/qgis/measure/areaunits" ), QgsUnitTypes::encodeUnit( QgsUnitTypes::AreaAcres ) );
  QCOMPARE( prj->areaUnits(), QgsUnitTypes::AreaSquareYards );

  //test setting new units for project
  prj->setAreaUnits( QgsUnitTypes::AreaAcres );
  QCOMPARE( prj->areaUnits(), QgsUnitTypes::AreaAcres );

  delete prj;
}