15 #include <QStringList> 29 static const char *QGIS_URILIST_MIMETYPE =
"application/x-vnd.qgis.qgis.uri";
34 const QStringList decoded = decode( encData );
35 if ( decoded.size() < 4 )
43 if (
layerType == QLatin1String(
"raster" ) && decoded.size() >= 6 )
54 if ( decoded.size() > 6 )
56 if ( decoded.size() > 7 )
57 pId = decoded.at( 7 );
58 if ( decoded.size() > 8 )
61 QgsDebugMsgLevel( QStringLiteral(
"type:%1 key:%2 name:%3 uri:%4 supportedCRS:%5 supportedFormats:%6" )
70 ,
uri( layer->dataProvider()->dataSourceUri() )
72 ,
pId( QString::number( QCoreApplication::applicationPid() ) )
74 switch ( layer->
type() )
111 if (
layerType != QLatin1String(
"vector" ) )
113 error = QObject::tr(
"%1: Not a vector layer." ).arg(
name );
126 error = QObject::tr(
"Cannot get memory layer." );
139 if (
layerType != QLatin1String(
"raster" ) )
141 error = QObject::tr(
"%1: Not a raster layer." ).arg(
name );
161 if (
layerType != QLatin1String(
"mesh" ) )
163 error = QObject::tr(
"%1: Not a mesh layer." ).arg(
name );
192 return data->hasFormat( QGIS_URILIST_MIMETYPE );
197 QMimeData *mimeData =
new QMimeData();
199 mimeData->setData( QGIS_URILIST_MIMETYPE, uriListToByteArray( layers ) );
206 QByteArray encodedData = data->data( QGIS_URILIST_MIMETYPE );
207 QDataStream stream( &encodedData, QIODevice::ReadOnly );
210 while ( !stream.atEnd() )
214 list.append(
Uri( xUri ) );
226 _addLayerTreeNodeToUriList( child, uris );
245 const auto constNodes = nodes;
247 _addLayerTreeNodeToUriList( node, uris );
248 return uriListToByteArray( uris );
253 if ( uri.
pId.isEmpty() )
256 const qint64 pid = uri.
pId.toLongLong();
257 return pid == QCoreApplication::applicationPid();
260 QString QgsMimeDataUtils::encode(
const QStringList &items )
264 QRegularExpression re( QStringLiteral(
"(?<!\\\\):" ) );
265 const auto constItems = items;
266 for (
const QString &item : constItems )
269 str.replace(
'\\', QStringLiteral(
"\\\\" ) );
270 str.replace( re, QStringLiteral(
"\\:" ) );
271 encoded += str +
':';
273 return encoded.left( encoded.length() - 1 );
276 QStringList QgsMimeDataUtils::decode(
const QString &encoded )
280 bool inEscape =
false;
281 const auto constEncoded = encoded;
282 for ( QChar
c : constEncoded )
284 if (
c ==
'\\' && inEscape )
288 else if (
c ==
'\\' )
292 else if (
c ==
':' && !inEscape )
294 items.append( item );
303 items.append( item );
310 QByteArray encodedData;
312 QDataStream stream( &encodedData, QIODevice::WriteOnly );
313 const auto constLayers = layers;
314 for (
const Uri &u : constLayers )
QString layerType
Type of URI.
static bool hasOriginatedFromCurrentAppInstance(const QgsMimeDataUtils::Uri &uri)
Returns true if uri originated from the current QGIS application instance.
static QgsLayerTreeLayer * toLayer(QgsLayerTreeNode *node)
Cast node to a layer.
Base class for all map layer types.
static bool isGroup(QgsLayerTreeNode *node)
Check whether the node is a valid group node.
QgsMapLayerType type() const
Returns the type of the layer.
Setting options for loading vector layers.
Represents a raster layer.
static QgsLayerTreeGroup * toGroup(QgsLayerTreeNode *node)
Cast node to a group.
static UriList decodeUriList(const QMimeData *data)
QString name
Human readable name to be used e.g. in layer tree.
static Type parseType(const QString &wktStr)
Attempts to extract the WKB type from a WKT string.
static QMimeData * encodeUriList(const UriList &layers)
Encodes a URI list to a new QMimeData object.
QStringList supportedFormats
static bool isUriList(const QMimeData *data)
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c
QgsMapLayer * mapLayer() const
Returns the layer from the active project corresponding to this uri (if possible), otherwise returns nullptr.
QString data() const
Returns encoded representation of the object.
QList< QgsLayerTreeNode * > children()
Gets list of children of the node. Children are owned by the parent.
#define QgsDebugMsgLevel(str, level)
static bool isLayer(const QgsLayerTreeNode *node)
Check whether the node is a valid layer node.
This class is a base class for nodes in a layer tree.
QgsVectorLayer * vectorLayer(bool &owner, QString &error) const
Gets vector layer from uri if possible, otherwise returns nullptr and error is set.
Uri()=default
Constructs invalid URI.
QgsMeshLayer * meshLayer(bool &owner, QString &error) const
Gets mesh layer from uri if possible, otherwise returns nullptr and error is set. ...
QgsCoordinateTransformContext transformContext
QgsMapLayer * layer() const
Returns the map layer associated with this node.
QString pId
Unique ID associated with application instance.
static QgsProject * instance()
Returns the QgsProject singleton instance.
QList< QgsMimeDataUtils::Uri > UriList
static QString displayString(Type type)
Returns a display string type for a WKB type, e.g., the geometry name used in WKT geometry representa...
QString providerKey
For "vector" / "raster" type: provider id.
QString layerId
Layer ID, if uri is associated with a layer from a QgsProject.
QString uri
Identifier of the data source recognized by its providerKey.
Q_INVOKABLE QgsMapLayer * mapLayer(const QString &layerId) const
Retrieve a pointer to a registered layer by layer ID.
Represents a mesh layer supporting display of data on structured or unstructured meshes.
static QByteArray layerTreeNodesToUriList(const QList< QgsLayerTreeNode *> &nodes)
Returns encoded URI list from a list of layer tree nodes.
QgsRasterLayer * rasterLayer(bool &owner, QString &error) const
Gets raster layer from uri if possible, otherwise returns nullptr and error is set.
QgsWkbTypes::Type wkbType
WKB type, if associated with a vector layer, or QgsWkbTypes::Unknown if not yet known.
Represents a vector layer which manages a vector based data sets.
Layer tree node points to a map layer.