qgslabelsearchtree.h

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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 "qgis_core.h"
#include "qgis_sip.h"
#include <QList>
#include <QVector>
#include "qgspallabeling.h"
#include "rtree.hpp"
#include "qgsmapsettings.h"

class QgsPointXY;

#ifndef SIP_RUN
namespace pal
{
  class LabelPosition;
}
#endif

// TODO QGIS 4.0 - this should be private, not exposed to SIP

class CORE_EXPORT QgsLabelSearchTree
{
  public:

    QgsLabelSearchTree() = default;
    ~QgsLabelSearchTree();

    QgsLabelSearchTree( const QgsLabelSearchTree &rh ) = delete;
    QgsLabelSearchTree &operator=( const QgsLabelSearchTree &rh ) = delete;

    void clear();

    void label( const QgsPointXY &p, QList<QgsLabelPosition *> &posList ) const SIP_SKIP;

    void labelsInRect( const QgsRectangle &r, QList<QgsLabelPosition *> &posList ) const SIP_SKIP;

    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;

    void setMapSettings( const QgsMapSettings &settings );

  private:
    // set as mutable because RTree template is not const-correct
    mutable pal::RTree<QgsLabelPosition *, double, 2, double> mSpatialIndex;
    std::vector< std::unique_ptr< QgsLabelPosition > > mOwnedPositions;
    QgsMapSettings mMapSettings;
    QTransform mTransform;

#ifdef SIP_RUN
    QgsLabelSearchTree( const QgsLabelSearchTree &rh );
    QgsLabelSearchTree &operator=( const QgsLabelSearchTree & );
#endif
};

#endif // QGSLABELTREE_H