示例#1
0
void QgsSymbolSelectorWidget::changeLayer( QgsSymbolLayer *newLayer )
{
  SymbolLayerItem *item = currentLayerItem();
  QgsSymbolLayer *layer = item->layer();

  if ( layer->subSymbol() )
  {
    item->removeRow( 0 );
  }
  // update symbol layer item
  item->setLayer( newLayer );
  // When it is a marker symbol
  if ( newLayer->subSymbol() )
  {
    loadSymbol( newLayer->subSymbol(), item );
    layersTree->setExpanded( item->index(), true );
  }

  // Change the symbol at last to avoid deleting item's layer
  QgsSymbol *symbol = static_cast<SymbolLayerItem *>( item->parent() )->symbol();
  int layerIdx = item->parent()->rowCount() - item->row() - 1;
  symbol->changeSymbolLayer( layerIdx, newLayer );

  item->updatePreview();
  updatePreview();
  // Important: This lets the layer have its own layer properties widget
  layerChanged();
}
示例#2
0
void QgsDwgImportDialog::createGroup( QgsLayerTreeGroup *group, const QString &name, const QStringList &layers, bool visible )
{
  QgsLayerTreeGroup *layerGroup = group->addGroup( name );
  QgsDebugMsg( QStringLiteral( " %1" ).arg( name ) ) ;
  Q_ASSERT( layerGroup );

  QString layerFilter;
  if ( !layers.isEmpty() )
  {
    QStringList exprlist;
    const auto constLayers = layers;
    for ( QString layer : constLayers )
    {
      exprlist.append( QStringLiteral( "'%1'" ).arg( layer.replace( QLatin1String( "'" ), QLatin1String( "''" ) ) ) );
    }
    layerFilter = QStringLiteral( "layer IN (%1) AND " ).arg( exprlist.join( QStringLiteral( "," ) ) );
  }

  QgsVectorLayer *l = nullptr;
  QgsSymbol *sym = nullptr;

  l = layer( layerGroup, layerFilter, QStringLiteral( "hatches" ) );
  if ( l )
  {
    QgsSimpleFillSymbolLayer *sfl = new QgsSimpleFillSymbolLayer();
    sfl->setDataDefinedProperty( QgsSymbolLayer::PropertyFillColor, QgsProperty::fromField( QStringLiteral( "color" ) ) );
    sfl->setStrokeStyle( Qt::NoPen );
    sym = new QgsFillSymbol();
    sym->changeSymbolLayer( 0, sfl );
    l->setRenderer( new QgsSingleSymbolRenderer( sym ) );
  }

  l = layer( layerGroup, layerFilter, QStringLiteral( "lines" ) );
  if ( l )
  {
    QgsSimpleLineSymbolLayer *sll = new QgsSimpleLineSymbolLayer();
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyStrokeColor, QgsProperty::fromField( QStringLiteral( "color" ) ) );
    sll->setPenJoinStyle( Qt::MiterJoin );
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyStrokeWidth, QgsProperty::fromField( QStringLiteral( "linewidth" ) ) );
    // sll->setUseCustomDashPattern( true );
    // sll->setCustomDashPatternUnit( QgsSymbolV2::MapUnit );
    // sll->setDataDefinedProperty( QgsSymbolLayer::PropertyCustomDash, QgsProperty::fromField( "linetype" ) );
    sym = new QgsLineSymbol();
    sym->changeSymbolLayer( 0, sll );
    sym->setOutputUnit( QgsUnitTypes::RenderMillimeters );
    l->setRenderer( new QgsSingleSymbolRenderer( sym ) );
  }

  l = layer( layerGroup, layerFilter, QStringLiteral( "polylines" ) );
  if ( l )
  {
    sym = new QgsLineSymbol();

    QgsSimpleLineSymbolLayer *sll = new QgsSimpleLineSymbolLayer();
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyStrokeColor, QgsProperty::fromField( QStringLiteral( "color" ) ) );
    sll->setPenJoinStyle( Qt::MiterJoin );
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyStrokeWidth, QgsProperty::fromField( QStringLiteral( "width" ) ) );
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyLayerEnabled, QgsProperty::fromExpression( QStringLiteral( "width>0" ) ) );
    sll->setOutputUnit( QgsUnitTypes::RenderMapUnits );
    // sll->setUseCustomDashPattern( true );
    // sll->setCustomDashPatternUnit( QgsSymbolV2::MapUnit );
    // sll->setDataDefinedProperty( QgsSymbolLayer::PropertyCustomDash, QgsProperty::fromField( "linetype" ) );
    sym->changeSymbolLayer( 0, sll );

    sll = new QgsSimpleLineSymbolLayer();
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyStrokeColor, QgsProperty::fromField( QStringLiteral( "color" ) ) );
    sll->setPenJoinStyle( Qt::MiterJoin );
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyStrokeWidth, QgsProperty::fromField( QStringLiteral( "linewidth" ) ) );
    sll->setDataDefinedProperty( QgsSymbolLayer::PropertyLayerEnabled, QgsProperty::fromExpression( QStringLiteral( "width=0" ) ) );
    sll->setOutputUnit( QgsUnitTypes::RenderMillimeters );
    sym->appendSymbolLayer( sll );

    l->setRenderer( new QgsSingleSymbolRenderer( sym ) );
  }

  l = layer( layerGroup, layerFilter, QStringLiteral( "texts" ) );
  if ( l )
  {
    l->setRenderer( new QgsNullSymbolRenderer() );

    QgsTextFormat tf;
    tf.setSizeUnit( QgsUnitTypes::RenderMapUnits );

    QgsPalLayerSettings pls;
    pls.setFormat( tf );

    pls.drawLabels = true;
    pls.fieldName = QStringLiteral( "text" );
    pls.wrapChar = QStringLiteral( "\\P" );

    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::Size, QgsProperty::fromField( QStringLiteral( "height" ) ) );
    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::Color, QgsProperty::fromField( QStringLiteral( "color" ) ) );
    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::MultiLineHeight, QgsProperty::fromExpression( QStringLiteral( "CASE WHEN interlin<0 THEN 1 ELSE interlin*1.5 END" ) ) );
    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::PositionX, QgsProperty::fromExpression( QStringLiteral( "$x" ) ) );
    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::PositionY, QgsProperty::fromExpression( QStringLiteral( "$y" ) ) );

    // DXF TEXT
    // vertical: 0 = Base, 1 = Bottom, 2 = Middle, 3 = Top,  default Base
    // horizontal: 0 = Left, 1 = Center, 2 = Right, 3 = Aligned (if Base), 4 = Middle (if Base), default Left

    // DXF MTEXT
    // 1 = Top left;    2 = Top center;    3 = Top right
    // 4 = Middle left; 5 = Middle center; 6 = Middle right
    // 7 = Bottom left; 8 = Bottom center; 9 = Bottom right

    // QGIS Quadrant
    // 0 QuadrantAboveLeft, 1 QuadrantAbove, 2 QuadrantAboveRight,
    // 3 QuadrantLeft,      4 QuadrantOver,  5 QuadrantRight,
    // 6 QuadrantBelowLeft, 7 QuadrantBelow, 8 QuadrantBelowRight,

    pls.dataDefinedProperties().setProperty(
      QgsPalLayerSettings::Hali,
      QgsProperty::fromExpression( QStringLiteral(
                                     "CASE"
                                     " WHEN etype=%1 THEN"
                                     " CASE"
                                     " WHEN textgen % 3=2 THEN 'Center'"
                                     " WHEN textgen % 3=0 THEN 'Right'"
                                     " ELSE 'Left'"
                                     " END"
                                     " ELSE"
                                     " CASE"
                                     " WHEN alignh=1 THEN 'Center'"
                                     " WHEN alignh=2 THEN 'Right'"
                                     " ELSE 'Left'"
                                     " END"
                                     " END"
                                   ).arg( DRW::MTEXT )
                                 )
    );

    pls.dataDefinedProperties().setProperty(
      QgsPalLayerSettings::Vali,
      QgsProperty::fromExpression( QStringLiteral(
                                     "CASE"
                                     " WHEN etype=%1 THEN"
                                     " CASE"
                                     " WHEN textgen<4 THEN 'Top'"
                                     " WHEN textgen<7 THEN 'Half'"
                                     " ELSE 'Bottom'"
                                     " END"
                                     " ELSE"
                                     " CASE"
                                     " WHEN alignv=1 THEN 'Bottom'"
                                     " WHEN alignv=2 THEN 'Half'"
                                     " WHEN alignv=3 THEN 'Top'"
                                     " ELSE 'Base'"
                                     " END"
                                     " END"
                                   ).arg( DRW::MTEXT )
                                 )
    );

    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::LabelRotation, QgsProperty::fromExpression( QStringLiteral( "360-angle" ) ) );
    pls.dataDefinedProperties().setProperty( QgsPalLayerSettings::AlwaysShow, QgsProperty::fromExpression( QStringLiteral( "1" ) ) );

    l->setLabeling( new QgsVectorLayerSimpleLabeling( pls ) );
    l->setLabelsEnabled( true );
  }

  l = layer( layerGroup, layerFilter, QStringLiteral( "points" ) );
  if ( l )
  {
    // FIXME: use PDMODE?
    l->setRenderer( new QgsNullSymbolRenderer() );
  }

  if ( !cbExpandInserts->isChecked() )
    layer( layerGroup, layerFilter, QStringLiteral( "inserts" ) );

  if ( !layerGroup->children().isEmpty() )
  {
    layerGroup->setExpanded( false );
    layerGroup->setItemVisibilityChecked( visible );
  }
  else
  {
    layerGroup->parent()->takeChild( layerGroup );
    delete layerGroup;
  }
}