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C++ SymbolLayerItem::removeRow方法代码示例

本文整理汇总了C++中SymbolLayerItem::removeRow方法的典型用法代码示例。如果您正苦于以下问题:C++ SymbolLayerItem::removeRow方法的具体用法?C++ SymbolLayerItem::removeRow怎么用?C++ SymbolLayerItem::removeRow使用的例子?那么恭喜您, 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SymbolLayerItem的用法示例。


在下文中一共展示了SymbolLayerItem::removeRow方法的3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: changeLayer

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();
}
开发者ID:dbaston,项目名称:QGIS,代码行数:28,代码来源:qgssymbolselectordialog.cpp

示例2: symbolChanged

void QgsSymbolSelectorWidget::symbolChanged()
{
  SymbolLayerItem *currentItem = static_cast<SymbolLayerItem *>( model->itemFromIndex( layersTree->currentIndex() ) );
  if ( !currentItem || currentItem->isLayer() )
    return;
  // disconnect to avoid recreating widget
  disconnect( layersTree->selectionModel(), &QItemSelectionModel::currentChanged, this, &QgsSymbolSelectorWidget::layerChanged );
  if ( currentItem->parent() )
  {
    // it is a sub-symbol
    QgsSymbol *symbol = currentItem->symbol();
    SymbolLayerItem *parent = static_cast<SymbolLayerItem *>( currentItem->parent() );
    parent->removeRow( 0 );
    loadSymbol( symbol, parent );
    layersTree->setCurrentIndex( parent->child( 0 )->index() );
    parent->updatePreview();
  }
  else
  {
    //it is the symbol itself
    loadSymbol();
    QModelIndex newIndex = layersTree->model()->index( 0, 0 );
    layersTree->setCurrentIndex( newIndex );
  }
  updatePreview();
  // connect it back once things are set
  connect( layersTree->selectionModel(), &QItemSelectionModel::currentChanged, this, &QgsSymbolSelectorWidget::layerChanged );
}
开发者ID:dbaston,项目名称:QGIS,代码行数:28,代码来源:qgssymbolselectordialog.cpp

示例3: removeLayer

void QgsSymbolSelectorWidget::removeLayer()
{
  SymbolLayerItem *item = currentLayerItem();
  int row = item->row();
  SymbolLayerItem *parent = static_cast<SymbolLayerItem *>( item->parent() );

  int layerIdx = parent->rowCount() - row - 1; // IMPORTANT
  QgsSymbol *parentSymbol = parent->symbol();
  QgsSymbolLayer *tmpLayer = parentSymbol->takeSymbolLayer( layerIdx );

  parent->removeRow( row );
  parent->updatePreview();

  QModelIndex newIdx = parent->child( 0 )->index();
  layersTree->setCurrentIndex( newIdx );

  updateUi();
  updatePreview();
  //finally delete the removed layer pointer
  delete tmpLayer;
}
开发者ID:dbaston,项目名称:QGIS,代码行数:21,代码来源:qgssymbolselectordialog.cpp


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