QModelIndex QgsLayerTreeModel::parent( const QModelIndex &child ) const
{
if ( !child.isValid() )
return QModelIndex();
QgsLayerTreeNode *parentNode = 0;
QgsLayerTreeNode *n = index2node( child );
if ( !n )
{
QgsLayerTreeModelLegendNode* sym = index2legendNode( child );
Q_ASSERT( sym );
parentNode = sym->layerNode();
}
else
{
parentNode = n->parent(); // must not be null
}
Q_ASSERT( parentNode );
QgsLayerTreeNode* grandParentNode = parentNode->parent();
if ( !grandParentNode )
return QModelIndex(); // root node -> invalid index
int row = grandParentNode->children().indexOf( parentNode );
Q_ASSERT( row >= 0 );
return createIndex( row, 0, static_cast<QObject*>( parentNode ) );
}
QModelIndex QgsLayerTreeModel::index( int row, int column, const QModelIndex &parent ) const
{
if ( column != 0 || row < 0 || row >= rowCount( parent ) )
return QModelIndex();
QgsLayerTreeNode* n = index2node( parent );
if ( !n )
{
QgsLayerTreeModelLegendNode* sym = index2legendNode( parent );
Q_ASSERT( sym );
return QModelIndex(); // have no children
}
if ( !n || column != 0 || row >= rowCount( parent ) )
return QModelIndex();
if ( testFlag( ShowLegend ) && QgsLayerTree::isLayer( n ) )
{
QgsLayerTreeLayer* nL = QgsLayerTree::toLayer( n );
Q_ASSERT( mLegendNodes.contains( nL ) );
return createIndex( row, column, static_cast<QObject*>( mLegendNodes[nL].at( row ) ) );
}
return createIndex( row, column, static_cast<QObject*>( n->children().at( row ) ) );
}
Qt::ItemFlags QgsLegendModel::flags( const QModelIndex &index ) const
{
// make the legend nodes selectable even if they are not by default
if ( index2legendNode( index ) )
return QgsLayerTreeModel::flags( index ) | Qt::ItemIsSelectable;
return QgsLayerTreeModel::flags( index );
}
bool QgsLayerTreeModel::setData( const QModelIndex& index, const QVariant& value, int role )
{
QgsLayerTreeModelLegendNode *sym = index2legendNode( index );
if ( sym )
{
if ( role == Qt::CheckStateRole && !testFlag( AllowLegendChangeState ) )
return false;
bool res = sym->setData( value, role );
if ( res )
emit dataChanged( index, index );
return res;
}
QgsLayerTreeNode* node = index2node( index );
if ( !node )
return QgsLayerTreeModel::setData( index, value, role );
if ( role == Qt::CheckStateRole )
{
if ( !testFlag( AllowNodeChangeVisibility ) )
return false;
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* layer = QgsLayerTree::toLayer( node );
layer->setVisible(( Qt::CheckState )value.toInt() );
return true;
}
if ( QgsLayerTree::isGroup( node ) )
{
QgsLayerTreeGroup* group = QgsLayerTree::toGroup( node );
group->setVisible(( Qt::CheckState )value.toInt() );
return true;
}
return true;
}
else if ( role == Qt::EditRole )
{
if ( !testFlag( AllowNodeRename ) )
return false;
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* layer = QgsLayerTree::toLayer( node );
layer->setLayerName( value.toString() );
emit dataChanged( index, index );
}
else if ( QgsLayerTree::isGroup( node ) )
{
QgsLayerTree::toGroup( node )->setName( value.toString() );
emit dataChanged( index, index );
}
}
return QAbstractItemModel::setData( index, value, role );
}
int QgsLayerTreeModel::rowCount( const QModelIndex &parent ) const
{
if ( QgsLayerTreeModelLegendNode* nodeLegend = index2legendNode( parent ) )
return legendNodeRowCount( nodeLegend );
QgsLayerTreeNode* n = index2node( parent );
if ( !n )
return 0;
if ( QgsLayerTree::isLayer( n ) )
{
if ( !testFlag( ShowLegend ) )
return 0;
return legendRootRowCount( QgsLayerTree::toLayer( n ) );
}
return n->children().count();
}
QModelIndex QgsLayerTreeModel::index( int row, int column, const QModelIndex &parent ) const
{
if ( column < 0 || column >= columnCount( parent ) ||
row < 0 || row >= rowCount( parent ) )
return QModelIndex();
if ( QgsLayerTreeModelLegendNode* nodeLegend = index2legendNode( parent ) )
return legendNodeIndex( row, column, nodeLegend );
QgsLayerTreeNode *n = index2node( parent );
if ( !n )
return QModelIndex(); // have no children
if ( testFlag( ShowLegend ) && QgsLayerTree::isLayer( n ) )
{
return legendRootIndex( row, column, QgsLayerTree::toLayer( n ) );
}
return createIndex( row, column, static_cast<QObject*>( n->children().at( row ) ) );
}
QModelIndex QgsLayerTreeModel::parent( const QModelIndex &child ) const
{
if ( !child.isValid() )
return QModelIndex();
if ( QgsLayerTreeNode *n = index2node( child ) )
{
return indexOfParentLayerTreeNode( n->parent() ); // must not be null
}
else if ( QgsLayerTreeModelLegendNode* legendNode = index2legendNode( child ) )
{
return legendParent( legendNode );
}
else
{
Q_ASSERT( false ); // no other node types!
return QModelIndex();
}
}
Qt::ItemFlags QgsLayerTreeModel::flags( const QModelIndex& index ) const
{
if ( !index.isValid() )
{
Qt::ItemFlags rootFlags = 0;
if ( testFlag( AllowNodeReorder ) )
rootFlags |= Qt::ItemIsDropEnabled;
return rootFlags;
}
if ( QgsLayerTreeModelLegendNode* symn = index2legendNode( index ) )
{
Qt::ItemFlags f = symn->flags();
if ( !testFlag( AllowLegendChangeState ) )
f &= ~Qt::ItemIsUserCheckable;
return f;
}
Qt::ItemFlags f = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
if ( testFlag( AllowNodeRename ) )
f |= Qt::ItemIsEditable;
QgsLayerTreeNode* node = index2node( index );
bool isEmbedded = node->customProperty( "embedded" ).toInt();
if ( testFlag( AllowNodeReorder ) )
{
// only root embedded nodes can be reordered
if ( !isEmbedded || ( isEmbedded && node->parent() && !node->parent()->customProperty( "embedded" ).toInt() ) )
f |= Qt::ItemIsDragEnabled;
}
if ( testFlag( AllowNodeChangeVisibility ) && ( QgsLayerTree::isLayer( node ) || QgsLayerTree::isGroup( node ) ) )
f |= Qt::ItemIsUserCheckable;
if ( testFlag( AllowNodeReorder ) && QgsLayerTree::isGroup( node ) && !isEmbedded )
f |= Qt::ItemIsDropEnabled;
return f;
}
int QgsLayerTreeModel::rowCount( const QModelIndex &parent ) const
{
if ( index2legendNode( parent ) )
return 0; // they are leaves
QgsLayerTreeNode* n = index2node( parent );
if ( !n )
return 0;
if ( QgsLayerTree::isLayer( n ) )
{
if ( !testFlag( ShowLegend ) )
return 0;
QgsLayerTreeLayer* nL = QgsLayerTree::toLayer( n );
if ( mLegendNodes[nL].count() == 1 && mLegendNodes[nL][0]->isEmbeddedInParent() )
return 0;
return mLegendNodes[nL].count();
}
return n->children().count();
}
int QgsLayerTreeModel::rowCount( const QModelIndex &parent ) const
{
if ( index2legendNode( parent ) )
{
return 0; // they are leaves
}
QgsLayerTreeNode* n = index2node( parent );
if ( parent.isValid() && parent.column() != 0 )
return 0;
if ( QgsLayerTree::isLayer( n ) )
{
QgsLayerTreeLayer* nL = QgsLayerTree::toLayer( n );
if ( mLegendNodes[nL].count() == 1 && mLegendNodes[nL][0]->isEmbeddedInParent() )
return 0;
return mLegendNodes[nL].count();
}
return n->children().count();
}
QVariant QgsLayerTreeModel::data( const QModelIndex &index, int role ) const
{
if ( !index.isValid() || index.column() > 1 )
return QVariant();
if ( QgsLayerTreeModelLegendNode* sym = index2legendNode( index ) )
{
if ( role == Qt::CheckStateRole && !testFlag( AllowLegendChangeState ) )
return QVariant();
return sym->data( role );
}
QgsLayerTreeNode* node = index2node( index );
if ( role == Qt::DisplayRole || role == Qt::EditRole )
{
if ( QgsLayerTree::isGroup( node ) )
return QgsLayerTree::toGroup( node )->name();
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
QString name = nodeLayer->layerName();
if ( nodeLayer->customProperty( "showFeatureCount", 0 ).toInt() && role == Qt::DisplayRole )
{
QgsVectorLayer* vlayer = qobject_cast<QgsVectorLayer*>( nodeLayer->layer() );
if ( vlayer && vlayer->pendingFeatureCount() >= 0 )
name += QString( " [%1]" ).arg( vlayer->pendingFeatureCount() );
}
return name;
}
}
else if ( role == Qt::DecorationRole && index.column() == 0 )
{
if ( QgsLayerTree::isGroup( node ) )
return iconGroup();
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer *nodeLayer = QgsLayerTree::toLayer( node );
QgsMapLayer *layer = nodeLayer->layer();
if ( !layer )
return QVariant();
// icons possibly overriding default icon
if ( layer->type() == QgsMapLayer::RasterLayer )
{
if ( testFlag( ShowRasterPreviewIcon ) )
{
QgsRasterLayer* rlayer = qobject_cast<QgsRasterLayer *>( layer );
return QIcon( rlayer->previewAsPixmap( QSize( 32, 32 ) ) );
}
}
QgsVectorLayer *vlayer = dynamic_cast<QgsVectorLayer*>( layer );
if ( layer->type() == QgsMapLayer::RasterLayer )
{
return QgsLayerItem::iconRaster();
}
QIcon icon;
// if there's just on legend entry that should be embedded in layer - do that!
if ( testFlag( ShowLegend ) && mLegendNodes[nodeLayer].count() == 1 && mLegendNodes[nodeLayer][0]->isEmbeddedInParent() )
{
icon = QIcon( qvariant_cast<QPixmap>( mLegendNodes[nodeLayer][0]->data( Qt::DecorationRole ) ) );
}
else if ( layer->type() == QgsMapLayer::VectorLayer )
{
if ( vlayer->geometryType() == QGis::Point )
icon = QgsLayerItem::iconPoint();
else if ( vlayer->geometryType() == QGis::Line )
icon = QgsLayerItem::iconLine();
else if ( vlayer->geometryType() == QGis::Polygon )
icon = QgsLayerItem::iconPolygon();
else if ( vlayer->geometryType() == QGis::NoGeometry )
icon = QgsLayerItem::iconTable();
else
icon = QgsLayerItem::iconDefault();
}
if ( vlayer && vlayer->isEditable() )
{
QPixmap pixmap( icon.pixmap( 16, 16 ) );
QPainter painter( &pixmap );
painter.drawPixmap( 0, 0, 16, 16, QgsApplication::getThemePixmap( vlayer->isModified() ? "/mIconEditableEdits.png" : "/mIconEditable.png" ) );
painter.end();
icon = QIcon( pixmap );
}
return icon;
}
}
else if ( role == Qt::CheckStateRole )
{
if ( !testFlag( AllowNodeChangeVisibility ) )
return QVariant();
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
if ( nodeLayer->layer() && nodeLayer->layer()->type() == QgsMapLayer::VectorLayer )
{
if ( qobject_cast<QgsVectorLayer*>( nodeLayer->layer() )->geometryType() == QGis::NoGeometry )
return QVariant(); // do not show checkbox for non-spatial tables
}
return nodeLayer->isVisible();
}
else if ( QgsLayerTree::isGroup( node ) )
{
QgsLayerTreeGroup* nodeGroup = QgsLayerTree::toGroup( node );
return nodeGroup->isVisible();
}
}
else if ( role == Qt::FontRole )
{
QFont f( QgsLayerTree::isLayer( node ) ? mFontLayer : ( QgsLayerTree::isGroup( node ) ? mFontGroup : QFont() ) );
if ( node->customProperty( "embedded" ).toInt() )
f.setItalic( true );
if ( index == mCurrentIndex )
f.setUnderline( true );
return f;
}
else if ( role == Qt::ToolTipRole )
{
if ( QgsLayerTree::isLayer( node ) )
{
if ( QgsMapLayer* layer = QgsLayerTree::toLayer( node )->layer() )
return layer->publicSource();
}
}
return QVariant();
}
QVariant QgsLayerTreeModel::data( const QModelIndex &index, int role ) const
{
if ( !index.isValid() || index.column() > 1 )
return QVariant();
if ( QgsLayerTreeModelLegendNode* sym = index2legendNode( index ) )
return legendNodeData( sym, role );
QgsLayerTreeNode* node = index2node( index );
if ( role == Qt::DisplayRole || role == Qt::EditRole )
{
if ( QgsLayerTree::isGroup( node ) )
return QgsLayerTree::toGroup( node )->name();
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
QString name = nodeLayer->layerName();
if ( nodeLayer->customProperty( "showFeatureCount", 0 ).toInt() && role == Qt::DisplayRole )
{
QgsVectorLayer* vlayer = qobject_cast<QgsVectorLayer*>( nodeLayer->layer() );
if ( vlayer && vlayer->featureCount() >= 0 )
name += QString( " [%1]" ).arg( vlayer->featureCount() );
}
return name;
}
}
else if ( role == Qt::DecorationRole && index.column() == 0 )
{
if ( QgsLayerTree::isGroup( node ) )
return iconGroup();
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer *nodeLayer = QgsLayerTree::toLayer( node );
QgsMapLayer *layer = nodeLayer->layer();
if ( !layer )
return QVariant();
// icons possibly overriding default icon
if ( layer->type() == QgsMapLayer::RasterLayer )
{
if ( testFlag( ShowRasterPreviewIcon ) )
{
QgsRasterLayer* rlayer = qobject_cast<QgsRasterLayer *>( layer );
return QIcon( QPixmap::fromImage( rlayer->previewAsImage( QSize( 32, 32 ) ) ) );
}
else
{
return QgsLayerItem::iconRaster();
}
}
QgsVectorLayer *vlayer = dynamic_cast<QgsVectorLayer*>( layer );
QIcon icon;
// if there's just on legend entry that should be embedded in layer - do that!
if ( testFlag( ShowLegend ) && legendEmbeddedInParent( nodeLayer ) )
{
icon = legendIconEmbeddedInParent( nodeLayer );
}
else if ( vlayer && layer->type() == QgsMapLayer::VectorLayer )
{
if ( vlayer->geometryType() == QGis::Point )
icon = QgsLayerItem::iconPoint();
else if ( vlayer->geometryType() == QGis::Line )
icon = QgsLayerItem::iconLine();
else if ( vlayer->geometryType() == QGis::Polygon )
icon = QgsLayerItem::iconPolygon();
else if ( vlayer->geometryType() == QGis::NoGeometry )
icon = QgsLayerItem::iconTable();
else
icon = QgsLayerItem::iconDefault();
}
if ( vlayer && vlayer->isEditable() )
{
QPixmap pixmap( icon.pixmap( 16, 16 ) );
QPainter painter( &pixmap );
painter.drawPixmap( 0, 0, 16, 16, QgsApplication::getThemePixmap( vlayer->isModified() ? "/mIconEditableEdits.png" : "/mIconEditable.png" ) );
painter.end();
icon = QIcon( pixmap );
}
return icon;
}
}
else if ( role == Qt::CheckStateRole )
{
if ( !testFlag( AllowNodeChangeVisibility ) )
return QVariant();
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
if ( nodeLayer->layer() && nodeLayer->layer()->type() == QgsMapLayer::VectorLayer )
{
if ( qobject_cast<QgsVectorLayer*>( nodeLayer->layer() )->geometryType() == QGis::NoGeometry )
return QVariant(); // do not show checkbox for non-spatial tables
}
return nodeLayer->isVisible();
}
else if ( QgsLayerTree::isGroup( node ) )
{
QgsLayerTreeGroup* nodeGroup = QgsLayerTree::toGroup( node );
return nodeGroup->isVisible();
}
}
else if ( role == Qt::FontRole )
{
QFont f( QgsLayerTree::isLayer( node ) ? mFontLayer : ( QgsLayerTree::isGroup( node ) ? mFontGroup : QFont() ) );
if ( node->customProperty( "embedded" ).toInt() )
f.setItalic( true );
if ( index == mCurrentIndex )
f.setUnderline( true );
return f;
}
else if ( role == Qt::ForegroundRole )
{
QBrush brush( Qt::black, Qt::SolidPattern );
if ( QgsLayerTree::isLayer( node ) )
{
const QgsMapLayer* layer = QgsLayerTree::toLayer( node )->layer();
if ( layer && !layer->isInScaleRange( mLegendMapViewScale ) )
{
brush.setColor( Qt::lightGray );
}
}
return brush;
}
else if ( role == Qt::ToolTipRole )
{
if ( QgsLayerTree::isLayer( node ) )
{
if ( QgsMapLayer* layer = QgsLayerTree::toLayer( node )->layer() )
{
QString tooltip = "<b>" +
( layer->title().isEmpty() ? layer->shortName() : layer->title() ) + "</b>";
if ( !layer->abstract().isEmpty() )
tooltip += "<br/>" + layer->abstract().replace( "\n", "<br/>" );
tooltip += "<br/><i>" + layer->publicSource() + "</i>";
return tooltip;
}
}
}
return QVariant();
}
