C++ (Cpp) updateSymbolLayerWidget Examples

Example #1

File: qgslayerpropertieswidget.cpp Project: AaronGaim/QGIS

QgsLayerPropertiesWidget::QgsLayerPropertiesWidget( QgsSymbolLayerV2* layer, const QgsSymbolV2* symbol, const QgsVectorLayer* vl, QWidget* parent )
    : QWidget( parent )
{

  mLayer = layer;
  mSymbol = symbol;
  mVectorLayer = vl;

  setupUi( this );
  // initialize the sub-widgets
  // XXX Should this thing be here this way? Initialize all the widgets just for the sake of one layer?
  // TODO Make this on demand creation
  _initWidgetFunctions();

  // TODO Algorithm
  //
  // 3. populate the combo box with the supported layer type
  // 4. set the present layer type
  // 5. create the widget for the present layer type and set inn stacked widget
  // 6. connect comboBox type changed to two things
  //     1. emit signal that type has beed changed
  //     2. remove the widget and place the new widget corresponding to the changed layer type
  //
  populateLayerTypes();
  // update layer type combo box
  int idx = cboLayerType->findData( mLayer->layerType() );
  cboLayerType->setCurrentIndex( idx );
  // set the corresponding widget
  updateSymbolLayerWidget( layer );
  connect( cboLayerType, SIGNAL( currentIndexChanged( int ) ), this, SLOT( layerTypeChanged() ) );
}

Example #2

File: qgssymbolv2propertiesdialog.cpp Project: mmubangizi/qgis

void QgsSymbolV2PropertiesDialog::layerTypeChanged()
{
  QgsSymbolLayerV2* layer = currentLayer();
  if ( layer == NULL ) return;

  QString newLayerType = cboLayerType->itemData( cboLayerType->currentIndex() ).toString();
  if ( layer->layerType() == newLayerType )
    return;

  // get creation function for new layer from registry
  QgsSymbolLayerV2Registry* pReg = QgsSymbolLayerV2Registry::instance();
  QgsSymbolLayerV2AbstractMetadata* am = pReg->symbolLayerMetadata( newLayerType );
  if ( am == NULL ) // check whether the metadata is assigned
    return;

  // change layer to a new (with different type)
  QgsSymbolLayerV2* newLayer = am->createSymbolLayer( QgsStringMap() );
  if ( newLayer == NULL )
    return;
  mSymbol->changeSymbolLayer( currentLayerIndex(), newLayer );

  updateSymbolLayerWidget( newLayer );

  // update symbol layer item
  SymbolLayerItem* item = currentLayerItem();
  item->setLayer( newLayer );
  item->updatePreview();

  updatePreview();
}

Example #3

File: qgssymbolv2propertiesdialog.cpp Project: mmubangizi/qgis

void QgsSymbolV2PropertiesDialog::layerChanged()
{
  updateUi();

  // get layer info
  QgsSymbolLayerV2* layer = currentLayer();
  if ( layer == NULL )
    return;

  // update layer type combo box
  int idx = cboLayerType->findData( layer->layerType() );
  cboLayerType->setCurrentIndex( idx );

  updateSymbolLayerWidget( layer );

  updateLockButton();
}

Example #4

File: qgslayerpropertieswidget.cpp Project: AnAvidDeveloper/QGIS

void QgsLayerPropertiesWidget::layerTypeChanged()
{
  QgsSymbolLayerV2* layer = mLayer;
  if ( !layer )
    return;
  QString newLayerType = cboLayerType->itemData( cboLayerType->currentIndex() ).toString();
  if ( layer->layerType() == newLayerType )
    return;

  // get creation function for new layer from registry
  QgsSymbolLayerV2Registry* pReg = QgsSymbolLayerV2Registry::instance();
  QgsSymbolLayerV2AbstractMetadata* am = pReg->symbolLayerMetadata( newLayerType );
  if ( am == NULL ) // check whether the metadata is assigned
    return;

  // change layer to a new (with different type)
  QgsSymbolLayerV2* newLayer = am->createSymbolLayer( QgsStringMap() );
  if ( newLayer == NULL )
    return;

  updateSymbolLayerWidget( newLayer );
  emit changeLayer( newLayer );
}