QGIS API Documentation  3.8.0-Zanzibar (11aff65)
qgslabelsearchtree.h
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1 /***************************************************************************
2  qgslabelsearchtree.h
3  Node for raster calculator tree
4  --------------------
5  begin : 2010-11-02
6  copyright : (C) 2010 by Marco Hugentobler
7  email : marco dot hugentobler at sourcepole dot ch
8 ***************************************************************************/
9 
10 /***************************************************************************
11  * *
12  * This program is free software; you can redistribute it and/or modify *
13  * it under the terms of the GNU General Public License as published by *
14  * the Free Software Foundation; either version 2 of the License, or *
15  * (at your option) any later version. *
16  * *
17  ***************************************************************************/
18 
19 #ifndef QGSLABELSEARCHTREE_H
20 #define QGSLABELSEARCHTREE_H
21 
22 #include "qgis_core.h"
23 #include "qgis_sip.h"
24 #include <QList>
25 #include <QVector>
26 #include "qgspallabeling.h"
27 #include "rtree.hpp"
28 #include "qgsmapsettings.h"
29 
30 class QgsPointXY;
31 
32 #ifndef SIP_RUN
33 namespace pal
34 {
35  class LabelPosition;
36 }
37 #endif
38 
39 // TODO QGIS 4.0 - this should be private, not exposed to SIP
40 
45 class CORE_EXPORT QgsLabelSearchTree
46 {
47  public:
48 
52  QgsLabelSearchTree() = default;
54 
56  QgsLabelSearchTree( const QgsLabelSearchTree &rh ) = delete;
58  QgsLabelSearchTree &operator=( const QgsLabelSearchTree &rh ) = delete;
59 
61  void clear();
62 
68  void label( const QgsPointXY &p, QList<QgsLabelPosition *> &posList ) const SIP_SKIP;
69 
75  void labelsInRect( const QgsRectangle &r, QList<QgsLabelPosition *> &posList ) const SIP_SKIP;
76 
82  bool insertLabel( pal::LabelPosition *labelPos, QgsFeatureId featureId, const QString &layerName, const QString &labeltext, const QFont &labelfont, bool diagram = false, bool pinned = false, const QString &providerId = QString() ) SIP_SKIP;
83 
88  void setMapSettings( const QgsMapSettings &settings );
89 
90  private:
91  // set as mutable because RTree template is not const-correct
92  mutable pal::RTree<QgsLabelPosition *, double, 2, double> mSpatialIndex;
93  std::vector< std::unique_ptr< QgsLabelPosition > > mOwnedPositions;
94  QgsMapSettings mMapSettings;
95  QTransform mTransform;
96 
97 #ifdef SIP_RUN
101  QgsLabelSearchTree &operator=( const QgsLabelSearchTree & );
102 #endif
103 };
104 
105 #endif // QGSLABELTREE_H
A rectangle specified with double values.
Definition: qgsrectangle.h:41
A class to query the labeling structure at a given point (small wrapper around pal RTree class) ...
A class to represent a 2D point.
Definition: qgspointxy.h:43
qint64 QgsFeatureId
Definition: qgsfeatureid.h:25
The QgsMapSettings class contains configuration for rendering of the map.
#define SIP_SKIP
Definition: qgis_sip.h:119
LabelPosition is a candidate feature label position.
Definition: labelposition.h:55