QGIS API Documentation 3.27.0-Master (9c08adf5ef)
qgscoordinatetransformcontext.h
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1/***************************************************************************
2 qgscoordinatetransformcontext.h
3 -------------------------------
4 begin : November 2017
5 copyright : (C) 2017 by Nyall Dawson
6 email : nyall dot dawson at gmail dot com
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSCOORDINATETRANSFORMCONTEXT_H
19#define QGSCOORDINATETRANSFORMCONTEXT_H
20
21#include "qgis_core.h"
22#include "qgis_sip.h"
23#include "qgsdatumtransform.h"
24
25#include <QMetaType>
26#include <QExplicitlySharedDataPointer>
29class QgsCoordinateTransformContextPrivate;
30class QDomElement;
31
32/***************************************************************************
33 * This class is considered CRITICAL and any change MUST be accompanied with
34 * full unit tests in testqgsfeature.cpp.
35 * See details in QEP #17
36 ****************************************************************************/
37
58{
59 public:
60
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72
77
78 bool operator==( const QgsCoordinateTransformContext &rhs ) const ;
79
83 void clear();
84
100 Q_DECL_DEPRECATED QMap< QPair< QString, QString>, QgsDatumTransform::TransformPair > sourceDestinationDatumTransforms() const SIP_DEPRECATED;
101
117 QMap< QPair< QString, QString>, QString > coordinateOperations() const;
118
133 Q_DECL_DEPRECATED bool addSourceDestinationDatumTransform( const QgsCoordinateReferenceSystem &sourceCrs, const QgsCoordinateReferenceSystem &destinationCrs, int sourceTransformId, int destinationTransformId ) SIP_DEPRECATED;
134
166 bool addCoordinateOperation( const QgsCoordinateReferenceSystem &sourceCrs, const QgsCoordinateReferenceSystem &destinationCrs, const QString &coordinateOperationProjString, bool allowFallback = true );
167
175 Q_DECL_DEPRECATED void removeSourceDestinationDatumTransform( const QgsCoordinateReferenceSystem &sourceCrs, const QgsCoordinateReferenceSystem &destinationCrs ) SIP_DEPRECATED ;
176
182 void removeCoordinateOperation( const QgsCoordinateReferenceSystem &sourceCrs, const QgsCoordinateReferenceSystem &destinationCrs );
183
189 bool hasTransform( const QgsCoordinateReferenceSystem &source,
190 const QgsCoordinateReferenceSystem &destination ) const;
191
202 Q_DECL_DEPRECATED QgsDatumTransform::TransformPair calculateDatumTransforms( const QgsCoordinateReferenceSystem &source, const QgsCoordinateReferenceSystem &destination ) const SIP_DEPRECATED;
203
223 QString calculateCoordinateOperation( const QgsCoordinateReferenceSystem &source, const QgsCoordinateReferenceSystem &destination ) const;
224
234 bool allowFallbackTransform( const QgsCoordinateReferenceSystem &source, const QgsCoordinateReferenceSystem &destination ) const;
235
242 bool mustReverseCoordinateOperation( const QgsCoordinateReferenceSystem &source, const QgsCoordinateReferenceSystem &destination ) const;
243
244 // TODO QGIS 4.0 - remove missingTransforms, not used for Proj >= 6.0 builds
245
254 bool readXml( const QDomElement &element, const QgsReadWriteContext &context, QStringList &missingTransforms SIP_OUT );
255
260 void writeXml( QDomElement &element, const QgsReadWriteContext &context ) const;
261
262
267 void readSettings();
268
273 void writeSettings();
274
275
276 private:
277
278 QExplicitlySharedDataPointer<QgsCoordinateTransformContextPrivate> d;
279
280};
281
283
284#endif // QGSCOORDINATETRANSFORMCONTEXT_H
285
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288
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
Contains methods and classes relating the datum transformations.
The class is used as a container of context for various read/write operations on other objects.
#define SIP_DEPRECATED
Definition: qgis_sip.h:106
#define SIP_SKIP
Definition: qgis_sip.h:126
#define SIP_OUT
Definition: qgis_sip.h:58
Q_DECLARE_METATYPE(QgsDatabaseQueryLogEntry)
bool operator==(const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)
Contains datum transform information.