/usr/include/qgis/qgslabelsearchtree.h is in libqgis-dev 2.18.17+dfsg-1.
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qgslabelsearchtree.h
Node for raster calculator tree
--------------------
begin : 2010-11-02
copyright : (C) 2010 by Marco Hugentobler
email : marco dot hugentobler at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSLABELSEARCHTREE_H
#define QGSLABELSEARCHTREE_H
#include "qgspoint.h"
#include "qgsmaprenderer.h"
#include <QList>
#include <QVector>
#include <pointset.h>
#include <labelposition.h>
#include "qgsrectangle.h"
/** \ingroup core
* A class to query the labeling structure at a given point (small wraper around pal RTree class)*/
class CORE_EXPORT QgsLabelSearchTree
{
public:
QgsLabelSearchTree();
~QgsLabelSearchTree();
/** Removes and deletes all the entries*/
void clear();
/** Returns label position(s) at a given point. QgsLabelSearchTree keeps ownership, don't delete the LabelPositions
* @note not available in python bindings
* TODO: why does this break bindings with QList<QgsLabelPosition>?
*/
void label( const QgsPoint& p, QList<QgsLabelPosition*>& posList ) const;
/** Returns label position(s) in given rectangle. QgsLabelSearchTree keeps ownership, don't delete the LabelPositions
* @note not available in python bindings
* TODO: why does this break bindings with QList<QgsLabelPosition>?
*/
void labelsInRect( const QgsRectangle& r, QList<QgsLabelPosition*>& posList ) const;
/** Inserts label position. Does not take ownership of labelPos
* @return true in case of success
* @note not available in python bindings
*/
bool insertLabel( pal::LabelPosition* labelPos, int featureId, const QString& layerName, const QString& labeltext, const QFont& labelfont, bool diagram = false, bool pinned = false, const QString& providerId = QString() );
private:
// set as mutable because RTree template is not const-correct
mutable pal::RTree<QgsLabelPosition*, double, 2, double> mSpatialIndex;
QList< QgsLabelPosition* > mOwnedPositions;
QgsLabelSearchTree( const QgsLabelSearchTree& rh );
QgsLabelSearchTree& operator=( const QgsLabelSearchTree& rh );
};
#endif // QGSLABELTREE_H
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