1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/**
* Assorted functions for dealing with layer trees.
*
* @note added in 2.4
*/
class QgsLayerTreeUtils
{
%TypeHeaderCode
#include <qgslayertreeutils.h>
%End
public:
//! Try to load layer tree from <legend> tag from project files from QGIS 2.2 and below
static bool readOldLegend( QgsLayerTreeGroup* root, const QDomElement& legendElem );
//! Try to load custom layer order from <legend> tag from project files from QGIS 2.2 and below
static bool readOldLegendLayerOrder( const QDomElement& legendElem, bool& hasCustomOrder, QStringList& order );
//! Return <legend> tag used in QGIS 2.2 and below
static QDomElement writeOldLegend( QDomDocument& doc, QgsLayerTreeGroup* root, bool hasCustomOrder, const QStringList& order );
//! Convert Qt::CheckState to QString
static QString checkStateToXml( Qt::CheckState state );
//! Convert QString to Qt::CheckState
static Qt::CheckState checkStateFromXml( QString txt );
//! Return true if any of the layers is editable
static bool layersEditable( const QList<QgsLayerTreeLayer*>& layerNodes );
//! Return true if any of the layers is modified
static bool layersModified( const QList<QgsLayerTreeLayer*>& layerNodes );
//! Remove layer nodes that refer to invalid layers
static void removeInvalidLayers( QgsLayerTreeGroup* group );
//! Remove subtree of embedded groups. Useful when saving layer tree
static void removeChildrenOfEmbeddedGroups( QgsLayerTreeGroup* group );
};
|
