C++ QgsVectorDataProvider::defaultValue方法代码示例

本文整理汇总了C++中QgsVectorDataProvider::defaultValue方法的典型用法代码示例。如果您正苦于以下问题：C++ QgsVectorDataProvider::defaultValue方法的具体用法？C++ QgsVectorDataProvider::defaultValue怎么用？C++ QgsVectorDataProvider::defaultValue使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QgsVectorDataProvider的用法示例。

在下文中一共展示了QgsVectorDataProvider::defaultValue方法的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: addFeatureWithDefaultValue

int OptVectorLayer::addFeatureWithDefaultValue( OptFeature& f )
{
//{zhangliye2715:api}
  if ( !isEditable() )
  {
    startEditing();
  }

  // add the fields to the QgsFeature
  QgsVectorDataProvider* provider = dataProvider();
  const QgsFieldMap fields = provider->fields();

  for ( QgsFieldMap::const_iterator it = fields.begin(); it != fields.end(); ++it )
  {
    f.addAttribute( it.key(), provider->defaultValue( it.key() ) );
  }

  int id = -1;
  id = OptVectorLayer::addFeature( f );
  if ( id != -1 )
  {
    //add points to other features to keep topology up-to-date
    int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );

    if( topologicalEditing )
    {
      addTopologicalPoints( f.geometry() );
    }
  }
  else
  {
    return -1;
  }

  //vlayer->setModified(true);
  //commit or rollBack the change
  if ( isModified() )
  {
    commitChanges();
  }
  else
  {
    rollBack();
    return -1;
  }

  //make the layer still editable for the next adding operation
  startEditing();

  return id;
}

开发者ID:zhangliye，项目名称:OpenTrans，代码行数:51，代码来源:optvectorlayer.cpp

示例2: addFeature

bool QgsFeatureAction::addFeature( const QgsAttributeMap& defaultAttributes )
{
  if ( !mLayer || !mLayer->isEditable() )
    return false;

  QgsVectorDataProvider *provider = mLayer->dataProvider();

  QSettings settings;
  bool reuseLastValues = settings.value( "/qgis/digitizing/reuseLastValues", false ).toBool();
  QgsDebugMsg( QString( "reuseLastValues: %1" ).arg( reuseLastValues ) );

  // add the fields to the QgsFeature
  const QgsFields& fields = mLayer->pendingFields();
  mFeature.initAttributes( fields.count() );
  for ( int idx = 0; idx < fields.count(); ++idx )
  {
    if ( defaultAttributes.contains( idx ) )
    {
      QgsDebugMsg( QString( "Using specified default %1 for %2" ).arg( defaultAttributes.value( idx ).toString() ).arg( idx ) );
      mFeature.setAttribute( idx, defaultAttributes.value( idx ) );
    }
    else if ( reuseLastValues && mLastUsedValues.contains( mLayer ) && mLastUsedValues[ mLayer ].contains( idx ) )
    {
      QgsDebugMsg( QString( "reusing %1 for %2" ).arg( mLastUsedValues[ mLayer ][idx].toString() ).arg( idx ) );
      mFeature.setAttribute( idx, mLastUsedValues[ mLayer ][idx] );
    }
    else
    {
      mFeature.setAttribute( idx, provider->defaultValue( idx ) );
    }
  }

  bool res = false;

  mLayer->beginEditCommand( text() );

  // show the dialog to enter attribute values
  bool isDisabledAttributeValuesDlg = settings.value( "/qgis/digitizing/disable_enter_attribute_values_dialog", false ).toBool();
  // override application-wide setting with any layer setting
  switch ( mLayer->featureFormSuppress() )
  {
    case QgsVectorLayer::SuppressOn:
      isDisabledAttributeValuesDlg = true;
      break;
    case QgsVectorLayer::SuppressOff:
      isDisabledAttributeValuesDlg = false;
      break;
    case QgsVectorLayer::SuppressDefault:
      break;
  }
  if ( isDisabledAttributeValuesDlg )
  {
    res = mLayer->addFeature( mFeature );
  }
  else
  {
    QgsAttributes origValues;
    if ( reuseLastValues )
      origValues = mFeature.attributes();

    QgsAttributeDialog *dialog = newDialog( false );
    if ( dialog->exec() )
    {
      if ( reuseLastValues )
      {
        for ( int idx = 0; idx < fields.count(); ++idx )
        {
          const QgsAttributes &newValues = mFeature.attributes();
          if ( origValues[idx] != newValues[idx] )
          {
            QgsDebugMsg( QString( "saving %1 for %2" ).arg( mLastUsedValues[ mLayer ][idx].toString() ).arg( idx ) );
            mLastUsedValues[ mLayer ][idx] = newValues[idx];
          }
        }
      }

      res = mLayer->addFeature( mFeature );
    }
    else
    {
      QgsDebugMsg( "Adding feature to layer failed" );
      res = false;
    }
  }

  if ( res )
    mLayer->endEditCommand();
  else
    mLayer->destroyEditCommand();

  return res;
}

开发者ID:AnAvidDeveloper，项目名称:QGIS，代码行数:92，代码来源:qgsfeatureaction.cpp

示例3: addFeature

bool QgsFeatureAction::addFeature()
{
  if ( !mLayer || !mLayer->isEditable() )
    return false;

  QgsVectorDataProvider *provider = mLayer->dataProvider();

  QSettings settings;
  bool reuseLastValues = settings.value( "/qgis/digitizing/reuseLastValues", false ).toBool();
  QgsDebugMsg( QString( "reuseLastValues: %1" ).arg( reuseLastValues ) );

  // add the fields to the QgsFeature
  const QgsFieldMap fields = mLayer->pendingFields();
  for ( QgsFieldMap::const_iterator it = fields.constBegin(); it != fields.constEnd(); ++it )
  {
    if ( reuseLastValues && mLastUsedValues.contains( mLayer ) && mLastUsedValues[ mLayer ].contains( it.key() ) )
    {
      QgsDebugMsg( QString( "reusing %1 for %2" ).arg( mLastUsedValues[ mLayer ][ it.key()].toString() ).arg( it.key() ) );
      mFeature.addAttribute( it.key(), mLastUsedValues[ mLayer ][ it.key()] );
    }
    else
    {
      mFeature.addAttribute( it.key(), provider->defaultValue( it.key() ) );
    }
  }

  bool res = false;

  mLayer->beginEditCommand( text() );

  // show the dialog to enter attribute values
  bool isDisabledAttributeValuesDlg = settings.value( "/qgis/digitizing/disable_enter_attribute_values_dialog", false ).toBool();
  if ( isDisabledAttributeValuesDlg )
  {
    res = mLayer->addFeature( mFeature );
  }
  else
  {
    QgsAttributeMap origValues;
    if ( reuseLastValues )
      origValues = mFeature.attributeMap();

    QgsAttributeDialog *dialog = newDialog( false );
    if ( dialog->exec() )
    {
      if ( reuseLastValues )
      {
        for ( QgsFieldMap::const_iterator it = fields.constBegin(); it != fields.constEnd(); ++it )
        {
          const QgsAttributeMap &newValues = mFeature.attributeMap();
          if ( newValues.contains( it.key() )
               && origValues.contains( it.key() )
               && origValues[ it.key()] != newValues[ it.key()] )
          {
            QgsDebugMsg( QString( "saving %1 for %2" ).arg( mLastUsedValues[ mLayer ][ it.key()].toString() ).arg( it.key() ) );
            mLastUsedValues[ mLayer ][ it.key()] = newValues[ it.key()];
          }
        }
      }

      res = mLayer->addFeature( mFeature );
    }
    else
    {
      QgsDebugMsg( "Adding feature to layer failed" );
      res = false;
    }
  }

  if ( res )
    mLayer->endEditCommand();
  else
    mLayer->destroyEditCommand();

  return res;
}

开发者ID:aaronr，项目名称:Quantum-GIS，代码行数:76，代码来源:qgsfeatureaction.cpp

示例4: addFeature

bool QgsFeatureAction::addFeature( const QgsAttributeMap& defaultAttributes, bool showModal )
{
  if ( !mLayer || !mLayer->isEditable() )
    return false;

  QgsVectorDataProvider *provider = mLayer->dataProvider();

  QSettings settings;
  bool reuseLastValues = settings.value( "/qgis/digitizing/reuseLastValues", false ).toBool();
  QgsDebugMsg( QString( "reuseLastValues: %1" ).arg( reuseLastValues ) );

  // add the fields to the QgsFeature
  const QgsFields& fields = mLayer->fields();
  mFeature->initAttributes( fields.count() );
  for ( int idx = 0; idx < fields.count(); ++idx )
  {
    QVariant v;

    if ( defaultAttributes.contains( idx ) )
    {
      v = defaultAttributes.value( idx );
    }
    else if ( reuseLastValues && sLastUsedValues.contains( mLayer ) && sLastUsedValues[ mLayer ].contains( idx ) )
    {
      v = sLastUsedValues[ mLayer ][idx];
    }
    else
    {
      v = provider->defaultValue( idx );
    }

    mFeature->setAttribute( idx, v );
  }

  //show the dialog to enter attribute values
  //only show if enabled in settings and layer has fields
  bool isDisabledAttributeValuesDlg = ( fields.count() == 0 ) || settings.value( "/qgis/digitizing/disable_enter_attribute_values_dialog", false ).toBool();

  // override application-wide setting with any layer setting
  switch ( mLayer->editFormConfig()->suppress() )
  {
    case QgsEditFormConfig::SuppressOn:
      isDisabledAttributeValuesDlg = true;
      break;
    case QgsEditFormConfig::SuppressOff:
      isDisabledAttributeValuesDlg = false;
      break;
    case QgsEditFormConfig::SuppressDefault:
      break;
  }
  if ( isDisabledAttributeValuesDlg )
  {
    mLayer->beginEditCommand( text() );
    mFeatureSaved = mLayer->addFeature( *mFeature );

    if ( mFeatureSaved )
      mLayer->endEditCommand();
    else
      mLayer->destroyEditCommand();
  }
  else
  {
    QgsAttributeDialog *dialog = newDialog( false );
    dialog->setIsAddDialog( true );
    dialog->setEditCommandMessage( text() );

    connect( dialog->attributeForm(), SIGNAL( featureSaved( const QgsFeature & ) ), this, SLOT( onFeatureSaved( const QgsFeature & ) ) );

    if ( !showModal )
    {
      setParent( dialog ); // keep dialog until the dialog is closed and destructed
      dialog->show(); // will also delete the dialog on close (show() is overridden)
      mFeature = 0;
      return true;
    }

    dialog->setAttribute( Qt::WA_DeleteOnClose );
    dialog->exec();
  }

  // Will be set in the onFeatureSaved SLOT
  return mFeatureSaved;
}

开发者ID:stevenmizuno，项目名称:QGIS，代码行数:83，代码来源:qgsfeatureaction.cpp

示例5: addFeature

bool QgsFeatureAction::addFeature( const QgsAttributeMap& defaultAttributes )
{
  if ( !mLayer || !mLayer->isEditable() )
    return false;

  QgsVectorDataProvider *provider = mLayer->dataProvider();

  QSettings settings;
  bool reuseLastValues = settings.value( "/qgis/digitizing/reuseLastValues", false ).toBool();
  QgsDebugMsg( QString( "reuseLastValues: %1" ).arg( reuseLastValues ) );

  // add the fields to the QgsFeature
  const QgsFields& fields = mLayer->pendingFields();
  mFeature.initAttributes( fields.count() );
  for ( int idx = 0; idx < fields.count(); ++idx )
  {
    QVariant v;

    if ( defaultAttributes.contains( idx ) )
    {
      v = defaultAttributes.value( idx );
    }
    else if ( reuseLastValues && sLastUsedValues.contains( mLayer ) && sLastUsedValues[ mLayer ].contains( idx ) )
    {
      v = sLastUsedValues[ mLayer ][idx];
    }
    else
    {
      v = provider->defaultValue( idx );
    }

    mFeature.setAttribute( idx, v );
  }

  // show the dialog to enter attribute values
  bool isDisabledAttributeValuesDlg = settings.value( "/qgis/digitizing/disable_enter_attribute_values_dialog", false ).toBool();
  // override application-wide setting with any layer setting
  switch ( mLayer->featureFormSuppress() )
  {
    case QgsVectorLayer::SuppressOn:
      isDisabledAttributeValuesDlg = true;
      break;
    case QgsVectorLayer::SuppressOff:
      isDisabledAttributeValuesDlg = false;
      break;
    case QgsVectorLayer::SuppressDefault:
      break;
  }
  if ( isDisabledAttributeValuesDlg )
  {
    mLayer->beginEditCommand( text() );
    mFeatureSaved = mLayer->addFeature( mFeature );

    if ( mFeatureSaved )
      mLayer->endEditCommand();
    else
      mLayer->destroyEditCommand();
  }
  else
  {
    QgsAttributeDialog *dialog = newDialog( false );
    dialog->setIsAddDialog( true );
    dialog->setEditCommandMessage( text() );

    connect( dialog->attributeForm(), SIGNAL( featureSaved( QgsFeature ) ), this, SLOT( onFeatureSaved( QgsFeature ) ) );

    dialog->exec();
  }

  // Will be set in the onFeatureSaved SLOT
  return mFeatureSaved;
}

开发者ID:Asjad27，项目名称:QGIS，代码行数:72，代码来源:qgsfeatureaction.cpp

注：本文中的QgsVectorDataProvider::defaultValue方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。