QGIS API Documentation 3.41.0-Master (fda2aa46e9a)
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qgscoordinatereferencesystem.cpp
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1/***************************************************************************
2 qgscoordinatereferencesystem.cpp
3
4 -------------------
5 begin : 2007
6 copyright : (C) 2007 by Gary E. Sherman
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 ***************************************************************************/
19#include "moc_qgscoordinatereferencesystem.cpp"
21
24#include "qgsreadwritelocker.h"
25
26#include <cmath>
27
28#include <QDir>
29#include <QDomNode>
30#include <QDomElement>
31#include <QFileInfo>
32#include <QRegularExpression>
33#include <QTextStream>
34#include <QFile>
35
36#include "qgsapplication.h"
37#include "qgslogger.h"
38#include "qgsmessagelog.h"
39#include "qgis.h" //const vals declared here
40#include "qgslocalec.h"
41#include "qgssettings.h"
42#include "qgsogrutils.h"
43#include "qgsdatums.h"
44#include "qgsogcutils.h"
46#include "qgsprojoperation.h"
48
49#include <sqlite3.h>
50#include "qgsprojutils.h"
51#include <proj.h>
52#include <proj_experimental.h>
53
54//gdal and ogr includes (needed for == operator)
55#include <ogr_srs_api.h>
56#include <cpl_error.h>
57#include <cpl_conv.h>
58#include <cpl_csv.h>
59
60CUSTOM_CRS_VALIDATION QgsCoordinateReferenceSystem::sCustomSrsValidation = nullptr;
61
62typedef QHash< long, QgsCoordinateReferenceSystem > SrIdCrsCacheHash;
63typedef QHash< QString, QgsCoordinateReferenceSystem > StringCrsCacheHash;
64
65Q_GLOBAL_STATIC( QReadWriteLock, sSrIdCacheLock )
67bool QgsCoordinateReferenceSystem::sDisableSrIdCache = false;
68
69Q_GLOBAL_STATIC( QReadWriteLock, sOgcLock )
71bool QgsCoordinateReferenceSystem::sDisableOgcCache = false;
72
73Q_GLOBAL_STATIC( QReadWriteLock, sProj4CacheLock )
75bool QgsCoordinateReferenceSystem::sDisableProjCache = false;
76
77Q_GLOBAL_STATIC( QReadWriteLock, sCRSWktLock )
79bool QgsCoordinateReferenceSystem::sDisableWktCache = false;
80
81Q_GLOBAL_STATIC( QReadWriteLock, sCRSSrsIdLock )
83bool QgsCoordinateReferenceSystem::sDisableSrsIdCache = false;
84
85Q_GLOBAL_STATIC( QReadWriteLock, sCrsStringLock )
87bool QgsCoordinateReferenceSystem::sDisableStringCache = false;
88
89QString getFullProjString( PJ *obj )
90{
91 // see https://lists.osgeo.org/pipermail/proj/2019-May/008565.html, it's not sufficient to just
92 // use proj_as_proj_string
93 QgsProjUtils::proj_pj_unique_ptr boundCrs( proj_crs_create_bound_crs_to_WGS84( QgsProjContext::get(), obj, nullptr ) );
94 if ( boundCrs )
95 {
96 if ( const char *proj4src = proj_as_proj_string( QgsProjContext::get(), boundCrs.get(), PJ_PROJ_4, nullptr ) )
97 {
98 return QString( proj4src );
99 }
100 }
101
102 return QString( proj_as_proj_string( QgsProjContext::get(), obj, PJ_PROJ_4, nullptr ) );
103}
104//--------------------------
105
112
114{
115 d = new QgsCoordinateReferenceSystemPrivate();
116 createFromString( definition );
117}
118
120{
121 d = new QgsCoordinateReferenceSystemPrivate();
123 createFromId( id, type );
125}
126
128 : d( srs.d )
129 , mValidationHint( srs.mValidationHint )
130 , mNativeFormat( srs.mNativeFormat )
131{
132}
133
135{
136 d = srs.d;
137 mValidationHint = srs.mValidationHint;
138 mNativeFormat = srs.mNativeFormat;
139 return *this;
140}
141
143{
144 QList<long> results;
145 // check both standard & user defined projection databases
147
148 const auto constDbs = dbs;
149 for ( const QString &db : constDbs )
150 {
151 QFileInfo myInfo( db );
152 if ( !myInfo.exists() )
153 {
154 QgsDebugError( "failed : " + db + " does not exist!" );
155 continue;
156 }
157
160
161 //check the db is available
162 int result = openDatabase( db, database );
163 if ( result != SQLITE_OK )
164 {
165 QgsDebugError( "failed : " + db + " could not be opened!" );
166 continue;
167 }
168
169 QString sql = QStringLiteral( "select srs_id from tbl_srs" );
170 int rc;
171 statement = database.prepare( sql, rc );
172 while ( true )
173 {
174 // this one is an infinitive loop, intended to fetch any row
175 int ret = statement.step();
176
177 if ( ret == SQLITE_DONE )
178 {
179 // there are no more rows to fetch - we can stop looping
180 break;
181 }
182
183 if ( ret == SQLITE_ROW )
184 {
185 results.append( statement.columnAsInt64( 0 ) );
186 }
187 else
188 {
189 QgsMessageLog::logMessage( QObject::tr( "SQLite error: %2\nSQL: %1" ).arg( sql, sqlite3_errmsg( database.get() ) ), QObject::tr( "SpatiaLite" ) );
190 break;
191 }
192 }
193 }
194 std::sort( results.begin(), results.end() );
195 return results;
196}
197
204
206{
207 QgsCoordinateReferenceSystem res = fromOgcWmsCrs( "EPSG:" + QString::number( epsg ) );
208 if ( res.isValid() )
209 return res;
210
211 // pre proj6 builds allowed use of ESRI: codes here (e.g. 54030), so we need to keep compatibility
212 res = fromOgcWmsCrs( "ESRI:" + QString::number( epsg ) );
213 if ( res.isValid() )
214 return res;
215
217}
218
220{
221 return fromProj( proj4 );
222}
223
230
237
244
246{
247 error.clear();
248 PJ *horizontalObj = horizontalCrs.projObject();
249 PJ *verticalObj = verticalCrs.projObject();
250 if ( horizontalObj && verticalObj )
251 {
252 QStringList errors;
253 QgsProjUtils::proj_pj_unique_ptr compoundCrs = QgsProjUtils::createCompoundCrs( horizontalObj, verticalObj, &errors );
254 if ( compoundCrs )
255 return QgsCoordinateReferenceSystem::fromProjObject( compoundCrs.get() );
256
257 QStringList formattedErrorList;
258 for ( const QString &rawError : std::as_const( errors ) )
259 {
260 QString formattedError = rawError;
261 formattedError.replace( QLatin1String( "proj_create_compound_crs: " ), QString() );
262 formattedErrorList.append( formattedError );
263 }
264 error = formattedErrorList.join( '\n' );
265 }
267}
268
272
274{
275 bool result = false;
276 switch ( type )
277 {
278 case InternalCrsId:
279 result = createFromSrsId( id );
280 break;
281 case PostgisCrsId:
283 result = createFromSrid( id );
285 break;
286 case EpsgCrsId:
287 result = createFromOgcWmsCrs( QStringLiteral( "EPSG:%1" ).arg( id ) );
288 break;
289 default:
290 //THIS IS BAD...THIS PART OF CODE SHOULD NEVER BE REACHED...
291 QgsDebugError( QStringLiteral( "Unexpected case reached!" ) );
292 };
293 return result;
294}
295
296bool QgsCoordinateReferenceSystem::createFromString( const QString &definition )
297{
298 if ( definition.isEmpty() )
299 return false;
300
301 QgsReadWriteLocker locker( *sCrsStringLock(), QgsReadWriteLocker::Read );
302 if ( !sDisableStringCache )
303 {
304 QHash< QString, QgsCoordinateReferenceSystem >::const_iterator crsIt = sStringCache()->constFind( definition );
305 if ( crsIt != sStringCache()->constEnd() )
306 {
307 // found a match in the cache
308 *this = crsIt.value();
309 return d->mIsValid;
310 }
311 }
312 locker.unlock();
313
314 bool result = false;
315 const thread_local QRegularExpression reCrsId( QStringLiteral( "^(epsg|esri|osgeo|ignf|ogc|nkg|zangi|iau_2015|iau2000|postgis|internal|user)\\:(\\w+)$" ), QRegularExpression::CaseInsensitiveOption );
316 QRegularExpressionMatch match = reCrsId.match( definition );
317 if ( match.capturedStart() == 0 )
318 {
319 QString authName = match.captured( 1 ).toLower();
320 if ( authName == QLatin1String( "epsg" ) )
321 {
322 result = createFromOgcWmsCrs( definition );
323 }
324 else if ( authName == QLatin1String( "postgis" ) )
325 {
326 const long id = match.captured( 2 ).toLong();
328 result = createFromSrid( id );
330 }
331 else if ( authName == QLatin1String( "esri" )
332 || authName == QLatin1String( "osgeo" )
333 || authName == QLatin1String( "ignf" )
334 || authName == QLatin1String( "zangi" )
335 || authName == QLatin1String( "iau2000" )
336 || authName == QLatin1String( "ogc" )
337 || authName == QLatin1String( "nkg" )
338 || authName == QLatin1String( "iau_2015" )
339 )
340 {
341 result = createFromOgcWmsCrs( definition );
342 }
343 else
344 {
345 const long id = match.captured( 2 ).toLong();
347 result = createFromId( id, InternalCrsId );
349 }
350 }
351 else
352 {
353 const thread_local QRegularExpression reCrsStr( QStringLiteral( "^(?:(wkt|proj4|proj)\\:)?(.+)$" ), QRegularExpression::CaseInsensitiveOption );
354 match = reCrsStr.match( definition );
355 if ( match.capturedStart() == 0 )
356 {
357 if ( match.captured( 1 ).startsWith( QLatin1String( "proj" ), Qt::CaseInsensitive ) )
358 {
359 result = createFromProj( match.captured( 2 ) );
360 }
361 else
362 {
363 result = createFromWkt( match.captured( 2 ) );
364 }
365 }
366 }
367
369 if ( !sDisableStringCache )
370 sStringCache()->insert( definition, *this );
371 return result;
372}
373
375{
376 if ( definition.isEmpty() )
377 return false;
378
379 QString userWkt;
380 OGRSpatialReferenceH crs = OSRNewSpatialReference( nullptr );
381
382 if ( OSRSetFromUserInput( crs, definition.toLocal8Bit().constData() ) == OGRERR_NONE )
383 {
385 OSRDestroySpatialReference( crs );
386 }
387 //QgsDebugMsgLevel( "definition: " + definition + " wkt = " + wkt, 2 );
388 return createFromWkt( userWkt );
389}
390
392{
393 // make sure towgs84 parameter is loaded if gdal >= 1.9
394 // this requires setting GDAL_FIX_ESRI_WKT=GEOGCS (see qgis bug #5598 and gdal bug #4673)
395 const char *configOld = CPLGetConfigOption( "GDAL_FIX_ESRI_WKT", "" );
396 const char *configNew = "GEOGCS";
397 // only set if it was not set, to let user change the value if needed
398 if ( strcmp( configOld, "" ) == 0 )
399 {
400 CPLSetConfigOption( "GDAL_FIX_ESRI_WKT", configNew );
401 if ( strcmp( configNew, CPLGetConfigOption( "GDAL_FIX_ESRI_WKT", "" ) ) != 0 )
402 QgsLogger::warning( QStringLiteral( "GDAL_FIX_ESRI_WKT could not be set to %1 : %2" )
403 .arg( configNew, CPLGetConfigOption( "GDAL_FIX_ESRI_WKT", "" ) ) );
404 QgsDebugMsgLevel( QStringLiteral( "set GDAL_FIX_ESRI_WKT : %1" ).arg( configNew ), 4 );
405 }
406 else
407 {
408 QgsDebugMsgLevel( QStringLiteral( "GDAL_FIX_ESRI_WKT was already set : %1" ).arg( configNew ), 4 );
409 }
410}
411
413{
414 if ( crs.isEmpty() )
415 return false;
416
417 QgsReadWriteLocker locker( *sOgcLock(), QgsReadWriteLocker::Read );
418 if ( !sDisableOgcCache )
419 {
420 QHash< QString, QgsCoordinateReferenceSystem >::const_iterator crsIt = sOgcCache()->constFind( crs );
421 if ( crsIt != sOgcCache()->constEnd() )
422 {
423 // found a match in the cache
424 *this = crsIt.value();
425 return d->mIsValid;
426 }
427 }
428 locker.unlock();
429
430 QString wmsCrs = crs;
431
432 QString authority;
433 QString code;
434 const QgsOgcCrsUtils::CRSFlavor crsFlavor = QgsOgcCrsUtils::parseCrsName( crs, authority, code );
435 const QString authorityLower = authority.toLower();
436 if ( crsFlavor == QgsOgcCrsUtils::CRSFlavor::AUTH_CODE &&
437 ( authorityLower == QLatin1String( "user" ) ||
438 authorityLower == QLatin1String( "custom" ) ||
439 authorityLower == QLatin1String( "qgis" ) ) )
440 {
441 if ( createFromSrsId( code.toInt() ) )
442 {
444 if ( !sDisableOgcCache )
445 sOgcCache()->insert( crs, *this );
446 return d->mIsValid;
447 }
448 }
449 else if ( crsFlavor != QgsOgcCrsUtils::CRSFlavor::UNKNOWN )
450 {
451 wmsCrs = authority + ':' + code;
452 }
453
454 // first chance for proj 6 - scan through legacy systems and try to use authid directly
455 const QString legacyKey = wmsCrs.toLower();
456 for ( auto it = sAuthIdToQgisSrsIdMap.constBegin(); it != sAuthIdToQgisSrsIdMap.constEnd(); ++it )
457 {
458 if ( it.key().compare( legacyKey, Qt::CaseInsensitive ) == 0 )
459 {
460 const QStringList parts = it.key().split( ':' );
461 const QString auth = parts.at( 0 );
462 const QString code = parts.at( 1 );
463 if ( loadFromAuthCode( auth, code ) )
464 {
466 if ( !sDisableOgcCache )
467 sOgcCache()->insert( crs, *this );
468 return d->mIsValid;
469 }
470 }
471 }
472
473 if ( loadFromDatabase( QgsApplication::srsDatabaseFilePath(), QStringLiteral( "lower(auth_name||':'||auth_id)" ), wmsCrs.toLower() ) )
474 {
476 if ( !sDisableOgcCache )
477 sOgcCache()->insert( crs, *this );
478 return d->mIsValid;
479 }
480
481 // NAD27
482 if ( wmsCrs.compare( QLatin1String( "CRS:27" ), Qt::CaseInsensitive ) == 0 ||
483 wmsCrs.compare( QLatin1String( "OGC:CRS27" ), Qt::CaseInsensitive ) == 0 )
484 {
485 // TODO: verify same axis orientation
486 return createFromOgcWmsCrs( QStringLiteral( "EPSG:4267" ) );
487 }
488
489 // NAD83
490 if ( wmsCrs.compare( QLatin1String( "CRS:83" ), Qt::CaseInsensitive ) == 0 ||
491 wmsCrs.compare( QLatin1String( "OGC:CRS83" ), Qt::CaseInsensitive ) == 0 )
492 {
493 // TODO: verify same axis orientation
494 return createFromOgcWmsCrs( QStringLiteral( "EPSG:4269" ) );
495 }
496
497 // WGS84
498 if ( wmsCrs.compare( QLatin1String( "CRS:84" ), Qt::CaseInsensitive ) == 0 ||
499 wmsCrs.compare( QLatin1String( "OGC:CRS84" ), Qt::CaseInsensitive ) == 0 )
500 {
501 if ( loadFromDatabase( QgsApplication::srsDatabaseFilePath(), QStringLiteral( "lower(auth_name||':'||auth_id)" ), QStringLiteral( "epsg:4326" ) ) )
502 {
503 d->mAxisInverted = false;
504 d->mAxisInvertedDirty = false;
505 }
506
508 if ( !sDisableOgcCache )
509 sOgcCache()->insert( crs, *this );
510
511 return d->mIsValid;
512 }
513
514 // Try loading from Proj's db using authority and code
515 // While this CRS wasn't found in QGIS' srs db, it may be present in proj's
516 if ( !authority.isEmpty() && !code.isEmpty() && loadFromAuthCode( authority, code ) )
517 {
519 if ( !sDisableOgcCache )
520 sOgcCache()->insert( crs, *this );
521 return d->mIsValid;
522 }
523
525 if ( !sDisableOgcCache )
526 sOgcCache()->insert( crs, QgsCoordinateReferenceSystem() );
527 return d->mIsValid;
528}
529
530// Misc helper functions -----------------------
531
532
534{
535 if ( d->mIsValid || !sCustomSrsValidation )
536 return;
537
538 // try to validate using custom validation routines
539 if ( sCustomSrsValidation )
540 sCustomSrsValidation( *this );
541}
542
544{
545 QgsReadWriteLocker locker( *sSrIdCacheLock(), QgsReadWriteLocker::Read );
546 if ( !sDisableSrIdCache )
547 {
548 QHash< long, QgsCoordinateReferenceSystem >::const_iterator crsIt = sSrIdCache()->constFind( id );
549 if ( crsIt != sSrIdCache()->constEnd() )
550 {
551 // found a match in the cache
552 *this = crsIt.value();
553 return d->mIsValid;
554 }
555 }
556 locker.unlock();
557
558 // first chance for proj 6 - scan through legacy systems and try to use authid directly
559 for ( auto it = sAuthIdToQgisSrsIdMap.constBegin(); it != sAuthIdToQgisSrsIdMap.constEnd(); ++it )
560 {
561 if ( it.value().endsWith( QStringLiteral( ",%1" ).arg( id ) ) )
562 {
563 const QStringList parts = it.key().split( ':' );
564 const QString auth = parts.at( 0 );
565 const QString code = parts.at( 1 );
566 if ( loadFromAuthCode( auth, code ) )
567 {
569 if ( !sDisableSrIdCache )
570 sSrIdCache()->insert( id, *this );
571
572 return d->mIsValid;
573 }
574 }
575 }
576
577 bool result = loadFromDatabase( QgsApplication::srsDatabaseFilePath(), QStringLiteral( "srid" ), QString::number( id ) );
578
580 if ( !sDisableSrIdCache )
581 sSrIdCache()->insert( id, *this );
582
583 return result;
584}
585
587{
588 QgsReadWriteLocker locker( *sCRSSrsIdLock(), QgsReadWriteLocker::Read );
589 if ( !sDisableSrsIdCache )
590 {
591 QHash< long, QgsCoordinateReferenceSystem >::const_iterator crsIt = sSrsIdCache()->constFind( id );
592 if ( crsIt != sSrsIdCache()->constEnd() )
593 {
594 // found a match in the cache
595 *this = crsIt.value();
596 return d->mIsValid;
597 }
598 }
599 locker.unlock();
600
601 // first chance for proj 6 - scan through legacy systems and try to use authid directly
602 for ( auto it = sAuthIdToQgisSrsIdMap.constBegin(); it != sAuthIdToQgisSrsIdMap.constEnd(); ++it )
603 {
604 if ( it.value().startsWith( QString::number( id ) + ',' ) )
605 {
606 const QStringList parts = it.key().split( ':' );
607 const QString auth = parts.at( 0 );
608 const QString code = parts.at( 1 );
609 if ( loadFromAuthCode( auth, code ) )
610 {
612 if ( !sDisableSrsIdCache )
613 sSrsIdCache()->insert( id, *this );
614 return d->mIsValid;
615 }
616 }
617 }
618
619 bool result = loadFromDatabase( id < USER_CRS_START_ID ? QgsApplication::srsDatabaseFilePath() :
621 QStringLiteral( "srs_id" ), QString::number( id ) );
622
624 if ( !sDisableSrsIdCache )
625 sSrsIdCache()->insert( id, *this );
626 return result;
627}
628
629bool QgsCoordinateReferenceSystem::loadFromDatabase( const QString &db, const QString &expression, const QString &value )
630{
631 d.detach();
632
633 QgsDebugMsgLevel( "load CRS from " + db + " where " + expression + " is " + value, 3 );
634 d->mIsValid = false;
635 d->mWktPreferred.clear();
636
637 QFileInfo myInfo( db );
638 if ( !myInfo.exists() )
639 {
640 QgsDebugError( "failed : " + db + " does not exist!" );
641 return d->mIsValid;
642 }
643
646 int myResult;
647 //check the db is available
648 myResult = openDatabase( db, database );
649 if ( myResult != SQLITE_OK )
650 {
651 return d->mIsValid;
652 }
653
654 /*
655 srs_id INTEGER PRIMARY KEY,
656 description text NOT NULL,
657 projection_acronym text NOT NULL,
658 ellipsoid_acronym NOT NULL,
659 parameters text NOT NULL,
660 srid integer NOT NULL,
661 auth_name varchar NOT NULL,
662 auth_id integer NOT NULL,
663 is_geo integer NOT NULL);
664 */
665
666 QString mySql = "select srs_id,description,projection_acronym,"
667 "ellipsoid_acronym,parameters,srid,auth_name||':'||auth_id,is_geo,wkt "
668 "from tbl_srs where " + expression + '=' + QgsSqliteUtils::quotedString( value ) + " order by deprecated";
669 statement = database.prepare( mySql, myResult );
670 QString wkt;
671 // XXX Need to free memory from the error msg if one is set
672 if ( myResult == SQLITE_OK && statement.step() == SQLITE_ROW )
673 {
674 d->mSrsId = statement.columnAsText( 0 ).toLong();
675 d->mDescription = statement.columnAsText( 1 );
676 d->mProjectionAcronym = statement.columnAsText( 2 );
677 d->mEllipsoidAcronym.clear();
678 d->mProj4 = statement.columnAsText( 4 );
679 d->mWktPreferred.clear();
680 d->mSRID = statement.columnAsText( 5 ).toLong();
681 d->mAuthId = statement.columnAsText( 6 );
682 d->mIsGeographic = statement.columnAsText( 7 ).toInt() != 0;
683 wkt = statement.columnAsText( 8 );
684 d->mAxisInvertedDirty = true;
685
686 if ( d->mSrsId >= USER_CRS_START_ID && ( d->mAuthId.isEmpty() || d->mAuthId == QChar( ':' ) ) )
687 {
688 d->mAuthId = QStringLiteral( "USER:%1" ).arg( d->mSrsId );
689 }
690 else if ( !d->mAuthId.startsWith( QLatin1String( "USER:" ), Qt::CaseInsensitive ) )
691 {
692 QStringList parts = d->mAuthId.split( ':' );
693 QString auth = parts.at( 0 );
694 QString code = parts.at( 1 );
695
696 {
697 QgsProjUtils::proj_pj_unique_ptr crs( proj_create_from_database( QgsProjContext::get(), auth.toLatin1(), code.toLatin1(), PJ_CATEGORY_CRS, false, nullptr ) );
698 d->setPj( QgsProjUtils::unboundCrs( crs.get() ) );
699 }
700
701 d->mIsValid = d->hasPj();
702 setMapUnits();
703 }
704
705 if ( !d->mIsValid )
706 {
707 if ( !wkt.isEmpty() )
708 {
709 setWktString( wkt );
710 // set WKT string resets the description to that description embedded in the WKT, so manually overwrite this back to the
711 // value from the user DB
712 d->mDescription = statement.columnAsText( 1 );
713 }
714 else
715 setProjString( d->mProj4 );
716 }
717 }
718 else
719 {
720 QgsDebugMsgLevel( "failed : " + mySql, 4 );
721 }
722 return d->mIsValid;
723}
724
725void QgsCoordinateReferenceSystem::removeFromCacheObjectsBelongingToCurrentThread( PJ_CONTEXT *pj_context )
726{
727 // Not completely sure about object order destruction after main() has
728 // exited. So it is safer to check sDisableCache before using sCacheLock
729 // in case sCacheLock would have been destroyed before the current TLS
730 // QgsProjContext object that has called us...
731
732 if ( !sDisableSrIdCache )
733 {
734 QgsReadWriteLocker locker( *sSrIdCacheLock(), QgsReadWriteLocker::Write );
735 if ( !sDisableSrIdCache )
736 {
737 for ( auto it = sSrIdCache()->begin(); it != sSrIdCache()->end(); )
738 {
739 auto &v = it.value();
740 if ( v.d->removeObjectsBelongingToCurrentThread( pj_context ) )
741 it = sSrIdCache()->erase( it );
742 else
743 ++it;
744 }
745 }
746 }
747 if ( !sDisableOgcCache )
748 {
749 QgsReadWriteLocker locker( *sOgcLock(), QgsReadWriteLocker::Write );
750 if ( !sDisableOgcCache )
751 {
752 for ( auto it = sOgcCache()->begin(); it != sOgcCache()->end(); )
753 {
754 auto &v = it.value();
755 if ( v.d->removeObjectsBelongingToCurrentThread( pj_context ) )
756 it = sOgcCache()->erase( it );
757 else
758 ++it;
759 }
760 }
761 }
762 if ( !sDisableProjCache )
763 {
764 QgsReadWriteLocker locker( *sProj4CacheLock(), QgsReadWriteLocker::Write );
765 if ( !sDisableProjCache )
766 {
767 for ( auto it = sProj4Cache()->begin(); it != sProj4Cache()->end(); )
768 {
769 auto &v = it.value();
770 if ( v.d->removeObjectsBelongingToCurrentThread( pj_context ) )
771 it = sProj4Cache()->erase( it );
772 else
773 ++it;
774 }
775 }
776 }
777 if ( !sDisableWktCache )
778 {
779 QgsReadWriteLocker locker( *sCRSWktLock(), QgsReadWriteLocker::Write );
780 if ( !sDisableWktCache )
781 {
782 for ( auto it = sWktCache()->begin(); it != sWktCache()->end(); )
783 {
784 auto &v = it.value();
785 if ( v.d->removeObjectsBelongingToCurrentThread( pj_context ) )
786 it = sWktCache()->erase( it );
787 else
788 ++it;
789 }
790 }
791 }
792 if ( !sDisableSrsIdCache )
793 {
794 QgsReadWriteLocker locker( *sCRSSrsIdLock(), QgsReadWriteLocker::Write );
795 if ( !sDisableSrsIdCache )
796 {
797 for ( auto it = sSrsIdCache()->begin(); it != sSrsIdCache()->end(); )
798 {
799 auto &v = it.value();
800 if ( v.d->removeObjectsBelongingToCurrentThread( pj_context ) )
801 it = sSrsIdCache()->erase( it );
802 else
803 ++it;
804 }
805 }
806 }
807 if ( !sDisableStringCache )
808 {
809 QgsReadWriteLocker locker( *sCrsStringLock(), QgsReadWriteLocker::Write );
810 if ( !sDisableStringCache )
811 {
812 for ( auto it = sStringCache()->begin(); it != sStringCache()->end(); )
813 {
814 auto &v = it.value();
815 if ( v.d->removeObjectsBelongingToCurrentThread( pj_context ) )
816 it = sStringCache()->erase( it );
817 else
818 ++it;
819 }
820 }
821 }
822}
823
825{
826 if ( d->mAxisInvertedDirty )
827 {
828 d->mAxisInverted = QgsProjUtils::axisOrderIsSwapped( d->threadLocalProjObject() );
829 d->mAxisInvertedDirty = false;
830 }
831
832 return d->mAxisInverted;
833}
834
835QList<Qgis::CrsAxisDirection> QgsCoordinateReferenceSystem::axisOrdering() const
836{
837 if ( type() == Qgis::CrsType::Compound )
839
840 const PJ *projObject = d->threadLocalProjObject();
841 if ( !projObject )
842 return {};
843
844 PJ_CONTEXT *context = QgsProjContext::get();
845 QgsProjUtils::proj_pj_unique_ptr pjCs( proj_crs_get_coordinate_system( context, projObject ) );
846 if ( !pjCs )
847 return {};
848
849 const thread_local QMap< Qgis::CrsAxisDirection, QString > mapping =
850 {
851 { Qgis::CrsAxisDirection::North, QStringLiteral( "north" ) },
852 { Qgis::CrsAxisDirection::NorthNorthEast, QStringLiteral( "northNorthEast" ) },
853 { Qgis::CrsAxisDirection::NorthEast, QStringLiteral( "northEast" ) },
854 { Qgis::CrsAxisDirection::EastNorthEast, QStringLiteral( "eastNorthEast" ) },
855 { Qgis::CrsAxisDirection::East, QStringLiteral( "east" ) },
856 { Qgis::CrsAxisDirection::EastSouthEast, QStringLiteral( "eastSouthEast" ) },
857 { Qgis::CrsAxisDirection::SouthEast, QStringLiteral( "southEast" ) },
858 { Qgis::CrsAxisDirection::SouthSouthEast, QStringLiteral( "southSouthEast" ) },
859 { Qgis::CrsAxisDirection::South, QStringLiteral( "south" ) },
860 { Qgis::CrsAxisDirection::SouthSouthWest, QStringLiteral( "southSouthWest" ) },
861 { Qgis::CrsAxisDirection::SouthWest, QStringLiteral( "southWest" ) },
862 { Qgis::CrsAxisDirection::WestSouthWest, QStringLiteral( "westSouthWest" ) },
863 { Qgis::CrsAxisDirection::West, QStringLiteral( "west" ) },
864 { Qgis::CrsAxisDirection::WestNorthWest, QStringLiteral( "westNorthWest" ) },
865 { Qgis::CrsAxisDirection::NorthWest, QStringLiteral( "northWest" ) },
866 { Qgis::CrsAxisDirection::NorthNorthWest, QStringLiteral( "northNorthWest" ) },
867 { Qgis::CrsAxisDirection::GeocentricX, QStringLiteral( "geocentricX" ) },
868 { Qgis::CrsAxisDirection::GeocentricY, QStringLiteral( "geocentricY" ) },
869 { Qgis::CrsAxisDirection::GeocentricZ, QStringLiteral( "geocentricZ" ) },
870 { Qgis::CrsAxisDirection::Up, QStringLiteral( "up" ) },
871 { Qgis::CrsAxisDirection::Down, QStringLiteral( "down" ) },
872 { Qgis::CrsAxisDirection::Forward, QStringLiteral( "forward" ) },
873 { Qgis::CrsAxisDirection::Aft, QStringLiteral( "aft" ) },
874 { Qgis::CrsAxisDirection::Port, QStringLiteral( "port" ) },
875 { Qgis::CrsAxisDirection::Starboard, QStringLiteral( "starboard" ) },
876 { Qgis::CrsAxisDirection::Clockwise, QStringLiteral( "clockwise" ) },
877 { Qgis::CrsAxisDirection::CounterClockwise, QStringLiteral( "counterClockwise" ) },
878 { Qgis::CrsAxisDirection::ColumnPositive, QStringLiteral( "columnPositive" ) },
879 { Qgis::CrsAxisDirection::ColumnNegative, QStringLiteral( "columnNegative" ) },
880 { Qgis::CrsAxisDirection::RowPositive, QStringLiteral( "rowPositive" ) },
881 { Qgis::CrsAxisDirection::RowNegative, QStringLiteral( "rowNegative" ) },
882 { Qgis::CrsAxisDirection::DisplayRight, QStringLiteral( "displayRight" ) },
883 { Qgis::CrsAxisDirection::DisplayLeft, QStringLiteral( "displayLeft" ) },
884 { Qgis::CrsAxisDirection::DisplayUp, QStringLiteral( "displayUp" ) },
885 { Qgis::CrsAxisDirection::DisplayDown, QStringLiteral( "displayDown" ) },
886 { Qgis::CrsAxisDirection::Future, QStringLiteral( "future" ) },
887 { Qgis::CrsAxisDirection::Past, QStringLiteral( "past" ) },
888 { Qgis::CrsAxisDirection::Towards, QStringLiteral( "towards" ) },
889 { Qgis::CrsAxisDirection::AwayFrom, QStringLiteral( "awayFrom" ) },
890 };
891
892 QList< Qgis::CrsAxisDirection > res;
893 const int axisCount = proj_cs_get_axis_count( context, pjCs.get() );
894 if ( axisCount > 0 )
895 {
896 res.reserve( axisCount );
897
898 for ( int i = 0; i < axisCount; ++i )
899 {
900 const char *outDirection = nullptr;
901 proj_cs_get_axis_info( context, pjCs.get(), i,
902 nullptr,
903 nullptr,
904 &outDirection,
905 nullptr,
906 nullptr,
907 nullptr,
908 nullptr
909 );
910 // get first word of direction only
911 const thread_local QRegularExpression rx( QStringLiteral( "([^\\s]+).*" ) );
912 const QRegularExpressionMatch match = rx.match( QString( outDirection ) );
913 if ( !match.hasMatch() )
914 continue;
915
916 const QString direction = match.captured( 1 );
918 for ( auto it = mapping.constBegin(); it != mapping.constEnd(); ++it )
919 {
920 if ( it.value().compare( direction, Qt::CaseInsensitive ) == 0 )
921 {
922 dir = it.key();
923 break;
924 }
925 }
926
927 res.append( dir );
928 }
929 }
930 return res;
931}
932
934{
935 return createFromWktInternal( wkt, QString() );
936}
937
938bool QgsCoordinateReferenceSystem::createFromWktInternal( const QString &wkt, const QString &description )
939{
940 if ( wkt.isEmpty() )
941 return false;
942
943 d.detach();
944
945 QgsReadWriteLocker locker( *sCRSWktLock(), QgsReadWriteLocker::Read );
946 if ( !sDisableWktCache )
947 {
948 QHash< QString, QgsCoordinateReferenceSystem >::const_iterator crsIt = sWktCache()->constFind( wkt );
949 if ( crsIt != sWktCache()->constEnd() )
950 {
951 // found a match in the cache
952 *this = crsIt.value();
953
954 if ( !description.isEmpty() && d->mDescription.isEmpty() )
955 {
956 // now we have a name for a previously unknown CRS! Update the cached CRS accordingly, so that we use the name from now on...
957 d->mDescription = description;
958 locker.changeMode( QgsReadWriteLocker::Write );
959 sWktCache()->insert( wkt, *this );
960 }
961 return d->mIsValid;
962 }
963 }
964 locker.unlock();
965
966 d->mIsValid = false;
967 d->mProj4.clear();
968 d->mWktPreferred.clear();
969 if ( wkt.isEmpty() )
970 {
971 QgsDebugMsgLevel( QStringLiteral( "theWkt is uninitialized, operation failed" ), 4 );
972 return d->mIsValid;
973 }
974
975 // try to match against user crs
976 QgsCoordinateReferenceSystem::RecordMap record = getRecord( "select * from tbl_srs where wkt=" + QgsSqliteUtils::quotedString( wkt ) + " order by deprecated" );
977 if ( !record.empty() )
978 {
979 long srsId = record[QStringLiteral( "srs_id" )].toLong();
980 if ( srsId > 0 )
981 {
982 createFromSrsId( srsId );
983 }
984 }
985 else
986 {
987 setWktString( wkt );
988 if ( !description.isEmpty() )
989 {
990 d->mDescription = description;
991 }
992 if ( d->mSrsId == 0 )
993 {
994 // lastly, try a tolerant match of the created proj object against all user CRSes (allowing differences in parameter order during the comparison)
995 long id = matchToUserCrs();
996 if ( id >= USER_CRS_START_ID )
997 {
998 createFromSrsId( id );
999 }
1000 }
1001 }
1002
1003 locker.changeMode( QgsReadWriteLocker::Write );
1004 if ( !sDisableWktCache )
1005 sWktCache()->insert( wkt, *this );
1006
1007 return d->mIsValid;
1008 //setMapunits will be called by createfromproj above
1009}
1010
1012{
1013 return d->mIsValid;
1014}
1015
1016bool QgsCoordinateReferenceSystem::createFromProj4( const QString &proj4String )
1017{
1018 return createFromProj( proj4String );
1019}
1020
1021bool QgsCoordinateReferenceSystem::createFromProj( const QString &projString, const bool identify )
1022{
1023 if ( projString.isEmpty() )
1024 return false;
1025
1026 d.detach();
1027
1028 if ( projString.trimmed().isEmpty() )
1029 {
1030 d->mIsValid = false;
1031 d->mProj4.clear();
1032 d->mWktPreferred.clear();
1033 return false;
1034 }
1035
1036 QgsReadWriteLocker locker( *sProj4CacheLock(), QgsReadWriteLocker::Read );
1037 if ( !sDisableProjCache )
1038 {
1039 QHash< QString, QgsCoordinateReferenceSystem >::const_iterator crsIt = sProj4Cache()->constFind( projString );
1040 if ( crsIt != sProj4Cache()->constEnd() )
1041 {
1042 // found a match in the cache
1043 *this = crsIt.value();
1044 return d->mIsValid;
1045 }
1046 }
1047 locker.unlock();
1048
1049 //
1050 // Examples:
1051 // +proj=tmerc +lat_0=0 +lon_0=-62 +k=0.999500 +x_0=400000 +y_0=0
1052 // +ellps=clrk80 +towgs84=-255,-15,71,0,0,0,0 +units=m +no_defs
1053 //
1054 // +proj=lcc +lat_1=46.8 +lat_0=46.8 +lon_0=2.337229166666664 +k_0=0.99987742
1055 // +x_0=600000 +y_0=2200000 +a=6378249.2 +b=6356515.000000472 +units=m +no_defs
1056 //
1057 QString myProj4String = projString.trimmed();
1058 myProj4String.remove( QStringLiteral( "+type=crs" ) );
1059 myProj4String = myProj4String.trimmed();
1060
1061 d->mIsValid = false;
1062 d->mWktPreferred.clear();
1063
1064 if ( identify )
1065 {
1066 // first, try to use proj to do this for us...
1067 const QString projCrsString = myProj4String + ( myProj4String.contains( QStringLiteral( "+type=crs" ) ) ? QString() : QStringLiteral( " +type=crs" ) );
1068 QgsProjUtils::proj_pj_unique_ptr crs( proj_create( QgsProjContext::get(), projCrsString.toLatin1().constData() ) );
1069 if ( crs )
1070 {
1071 QString authName;
1072 QString authCode;
1074 {
1075 const QString authid = QStringLiteral( "%1:%2" ).arg( authName, authCode );
1076 if ( createFromOgcWmsCrs( authid ) )
1077 {
1079 if ( !sDisableProjCache )
1080 sProj4Cache()->insert( projString, *this );
1081 return d->mIsValid;
1082 }
1083 }
1084 }
1085
1086 // try a direct match against user crses
1087 QgsCoordinateReferenceSystem::RecordMap myRecord = getRecord( "select * from tbl_srs where parameters=" + QgsSqliteUtils::quotedString( myProj4String ) + " order by deprecated" );
1088 long id = 0;
1089 if ( !myRecord.empty() )
1090 {
1091 id = myRecord[QStringLiteral( "srs_id" )].toLong();
1092 if ( id >= USER_CRS_START_ID )
1093 {
1094 createFromSrsId( id );
1095 }
1096 }
1097 if ( id < USER_CRS_START_ID )
1098 {
1099 // no direct matches, so go ahead and create a new proj object based on the proj string alone.
1100 setProjString( myProj4String );
1101
1102 // lastly, try a tolerant match of the created proj object against all user CRSes (allowing differences in parameter order during the comparison)
1103 id = matchToUserCrs();
1104 if ( id >= USER_CRS_START_ID )
1105 {
1106 createFromSrsId( id );
1107 }
1108 }
1109 }
1110 else
1111 {
1112 setProjString( myProj4String );
1113 }
1114
1116 if ( !sDisableProjCache )
1117 sProj4Cache()->insert( projString, *this );
1118
1119 return d->mIsValid;
1120}
1121
1122//private method meant for internal use by this class only
1123QgsCoordinateReferenceSystem::RecordMap QgsCoordinateReferenceSystem::getRecord( const QString &sql )
1124{
1125 QString myDatabaseFileName;
1126 QgsCoordinateReferenceSystem::RecordMap myMap;
1127 QString myFieldName;
1128 QString myFieldValue;
1131 int myResult;
1132
1133 // Get the full path name to the sqlite3 spatial reference database.
1134 myDatabaseFileName = QgsApplication::srsDatabaseFilePath();
1135 QFileInfo myInfo( myDatabaseFileName );
1136 if ( !myInfo.exists() )
1137 {
1138 QgsDebugError( "failed : " + myDatabaseFileName + " does not exist!" );
1139 return myMap;
1140 }
1141
1142 //check the db is available
1143 myResult = openDatabase( myDatabaseFileName, database );
1144 if ( myResult != SQLITE_OK )
1145 {
1146 return myMap;
1147 }
1148
1149 statement = database.prepare( sql, myResult );
1150 // XXX Need to free memory from the error msg if one is set
1151 if ( myResult == SQLITE_OK && statement.step() == SQLITE_ROW )
1152 {
1153 int myColumnCount = statement.columnCount();
1154 //loop through each column in the record adding its expression name and value to the map
1155 for ( int myColNo = 0; myColNo < myColumnCount; myColNo++ )
1156 {
1157 myFieldName = statement.columnName( myColNo );
1158 myFieldValue = statement.columnAsText( myColNo );
1159 myMap[myFieldName] = myFieldValue;
1160 }
1161 if ( statement.step() != SQLITE_DONE )
1162 {
1163 QgsDebugMsgLevel( QStringLiteral( "Multiple records found in srs.db" ), 4 );
1164 //be less fussy on proj 6 -- the db has MANY more entries!
1165 }
1166 }
1167 else
1168 {
1169 QgsDebugMsgLevel( "failed : " + sql, 4 );
1170 }
1171
1172 if ( myMap.empty() )
1173 {
1174 myDatabaseFileName = QgsApplication::qgisUserDatabaseFilePath();
1175 QFileInfo myFileInfo;
1176 myFileInfo.setFile( myDatabaseFileName );
1177 if ( !myFileInfo.exists() )
1178 {
1179 QgsDebugError( QStringLiteral( "user qgis.db not found" ) );
1180 return myMap;
1181 }
1182
1183 //check the db is available
1184 myResult = openDatabase( myDatabaseFileName, database );
1185 if ( myResult != SQLITE_OK )
1186 {
1187 return myMap;
1188 }
1189
1190 statement = database.prepare( sql, myResult );
1191 // XXX Need to free memory from the error msg if one is set
1192 if ( myResult == SQLITE_OK && statement.step() == SQLITE_ROW )
1193 {
1194 int myColumnCount = statement.columnCount();
1195 //loop through each column in the record adding its field name and value to the map
1196 for ( int myColNo = 0; myColNo < myColumnCount; myColNo++ )
1197 {
1198 myFieldName = statement.columnName( myColNo );
1199 myFieldValue = statement.columnAsText( myColNo );
1200 myMap[myFieldName] = myFieldValue;
1201 }
1202
1203 if ( statement.step() != SQLITE_DONE )
1204 {
1205 QgsDebugMsgLevel( QStringLiteral( "Multiple records found in srs.db" ), 4 );
1206 myMap.clear();
1207 }
1208 }
1209 else
1210 {
1211 QgsDebugMsgLevel( "failed : " + sql, 4 );
1212 }
1213 }
1214 return myMap;
1215}
1216
1217// Accessors -----------------------------------
1218
1220{
1221 return d->mSrsId;
1222}
1223
1225{
1226 return d->mSRID;
1227}
1228
1230{
1231 return d->mAuthId;
1232}
1233
1235{
1236 if ( d->mDescription.isNull() )
1237 {
1238 return QString();
1239 }
1240 else
1241 {
1242 return d->mDescription;
1243 }
1244}
1245
1247{
1248 QString id;
1249 if ( !authid().isEmpty() )
1250 {
1251 if ( type != Qgis::CrsIdentifierType::ShortString && !description().isEmpty() )
1252 id = QStringLiteral( "%1 - %2" ).arg( authid(), description() );
1253 else
1254 id = authid();
1255 }
1256 else if ( !description().isEmpty() )
1257 id = description();
1259 id = isValid() ? QObject::tr( "Custom CRS" ) : QObject::tr( "Unknown CRS" );
1260 else if ( !toWkt( Qgis::CrsWktVariant::Preferred ).isEmpty() )
1261 id = QObject::tr( "Custom CRS: %1" ).arg(
1262 type == Qgis::CrsIdentifierType::MediumString ? ( toWkt( Qgis::CrsWktVariant::Preferred ).left( 50 ) + QString( QChar( 0x2026 ) ) )
1264 else if ( !toProj().isEmpty() )
1265 id = QObject::tr( "Custom CRS: %1" ).arg( type == Qgis::CrsIdentifierType::MediumString ? ( toProj().left( 50 ) + QString( QChar( 0x2026 ) ) )
1266 : toProj() );
1267 if ( !id.isEmpty() && !std::isnan( d->mCoordinateEpoch ) )
1268 id += QStringLiteral( " @ %1" ).arg( qgsDoubleToString( d->mCoordinateEpoch, 3 ) );
1269
1270 return id;
1271}
1272
1274{
1275 if ( d->mProjectionAcronym.isNull() )
1276 {
1277 return QString();
1278 }
1279 else
1280 {
1281 return d->mProjectionAcronym;
1282 }
1283}
1284
1286{
1287 if ( d->mEllipsoidAcronym.isNull() )
1288 {
1289 if ( PJ *obj = d->threadLocalProjObject() )
1290 {
1291 QgsProjUtils::proj_pj_unique_ptr ellipsoid( proj_get_ellipsoid( QgsProjContext::get(), obj ) );
1292 if ( ellipsoid )
1293 {
1294 const QString ellipsoidAuthName( proj_get_id_auth_name( ellipsoid.get(), 0 ) );
1295 const QString ellipsoidAuthCode( proj_get_id_code( ellipsoid.get(), 0 ) );
1296 if ( !ellipsoidAuthName.isEmpty() && !ellipsoidAuthCode.isEmpty() )
1297 d->mEllipsoidAcronym = QStringLiteral( "%1:%2" ).arg( ellipsoidAuthName, ellipsoidAuthCode );
1298 else
1300 double semiMajor, semiMinor, invFlattening;
1301 int semiMinorComputed = 0;
1302 if ( proj_ellipsoid_get_parameters( QgsProjContext::get(), ellipsoid.get(), &semiMajor, &semiMinor, &semiMinorComputed, &invFlattening ) )
1303 {
1304 d->mEllipsoidAcronym = QStringLiteral( "PARAMETER:%1:%2" ).arg( qgsDoubleToString( semiMajor ),
1305 qgsDoubleToString( semiMinor ) );
1306 }
1307 else
1308 {
1309 d->mEllipsoidAcronym.clear();
1310 }
1311 }
1312 }
1313 }
1314 return d->mEllipsoidAcronym;
1315 }
1316 else
1317 {
1318 return d->mEllipsoidAcronym;
1319 }
1320}
1321
1323{
1324 return toProj();
1325}
1326
1328{
1329 if ( !d->mIsValid )
1330 return QString();
1331
1332 if ( d->mProj4.isEmpty() )
1333 {
1334 if ( PJ *obj = d->threadLocalProjObject() )
1335 {
1336 d->mProj4 = getFullProjString( obj );
1337 }
1338 }
1339 // Stray spaces at the end?
1340 return d->mProj4.trimmed();
1341}
1342
1344{
1345 // NOLINTBEGIN(bugprone-branch-clone)
1346 switch ( d->mProjType )
1347 {
1348 case PJ_TYPE_UNKNOWN:
1350
1351 case PJ_TYPE_ELLIPSOID:
1352 case PJ_TYPE_PRIME_MERIDIAN:
1353 case PJ_TYPE_GEODETIC_REFERENCE_FRAME:
1354 case PJ_TYPE_DYNAMIC_GEODETIC_REFERENCE_FRAME:
1355 case PJ_TYPE_VERTICAL_REFERENCE_FRAME:
1356 case PJ_TYPE_DYNAMIC_VERTICAL_REFERENCE_FRAME:
1357 case PJ_TYPE_DATUM_ENSEMBLE:
1358 case PJ_TYPE_CONVERSION:
1359 case PJ_TYPE_TRANSFORMATION:
1360 case PJ_TYPE_CONCATENATED_OPERATION:
1361 case PJ_TYPE_OTHER_COORDINATE_OPERATION:
1362 case PJ_TYPE_TEMPORAL_DATUM:
1363 case PJ_TYPE_ENGINEERING_DATUM:
1364 case PJ_TYPE_PARAMETRIC_DATUM:
1365 return Qgis::CrsType::Other;
1366
1367 case PJ_TYPE_CRS:
1368 case PJ_TYPE_GEOGRAPHIC_CRS:
1369 //not possible
1370 return Qgis::CrsType::Other;
1371
1372 case PJ_TYPE_GEODETIC_CRS:
1374 case PJ_TYPE_GEOCENTRIC_CRS:
1376 case PJ_TYPE_GEOGRAPHIC_2D_CRS:
1378 case PJ_TYPE_GEOGRAPHIC_3D_CRS:
1380 case PJ_TYPE_VERTICAL_CRS:
1382 case PJ_TYPE_PROJECTED_CRS:
1384 case PJ_TYPE_COMPOUND_CRS:
1386 case PJ_TYPE_TEMPORAL_CRS:
1388 case PJ_TYPE_ENGINEERING_CRS:
1390 case PJ_TYPE_BOUND_CRS:
1391 return Qgis::CrsType::Bound;
1392 case PJ_TYPE_OTHER_CRS:
1393 return Qgis::CrsType::Other;
1394#if PROJ_VERSION_MAJOR>9 || (PROJ_VERSION_MAJOR==9 && PROJ_VERSION_MINOR>=2)
1395 case PJ_TYPE_DERIVED_PROJECTED_CRS:
1397 case PJ_TYPE_COORDINATE_METADATA:
1398 return Qgis::CrsType::Other;
1399#endif
1400 }
1402 // NOLINTEND(bugprone-branch-clone)
1403}
1404
1406{
1407 const PJ *pj = projObject();
1408 if ( !pj )
1409 return false;
1410
1411 return proj_is_deprecated( pj );
1412}
1413
1415{
1416 return d->mIsGeographic;
1417}
1418
1420{
1421 const PJ *pj = projObject();
1422 if ( !pj )
1423 return false;
1424
1425 return QgsProjUtils::isDynamic( pj );
1426}
1427
1429{
1430 const PJ *pj = projObject();
1431 if ( !pj )
1432 return QString();
1433
1434#if PROJ_VERSION_MAJOR>8 || (PROJ_VERSION_MAJOR==8 && PROJ_VERSION_MINOR>=1)
1435 PJ_CONTEXT *context = QgsProjContext::get();
1436
1437 return QString( proj_get_celestial_body_name( context, pj ) );
1438#else
1439 throw QgsNotSupportedException( QObject::tr( "Retrieving celestial body requires a QGIS build based on PROJ 8.1 or later" ) );
1440#endif
1441}
1442
1444{
1445 if ( d->mCoordinateEpoch == epoch )
1446 return;
1447
1448 // detaching clears the proj object, so we need to clone the existing one first
1450 d.detach();
1451 d->mCoordinateEpoch = epoch;
1452 d->setPj( std::move( clone ) );
1453}
1454
1456{
1457 return d->mCoordinateEpoch;
1458}
1459
1461{
1462 QgsDatumEnsemble res;
1463 res.mValid = false;
1464
1465 const PJ *pj = projObject();
1466 if ( !pj )
1467 return res;
1468
1469#if PROJ_VERSION_MAJOR>=8
1470 PJ_CONTEXT *context = QgsProjContext::get();
1471
1473 if ( !ensemble )
1474 return res;
1475
1476 res.mValid = true;
1477 res.mName = QString( proj_get_name( ensemble.get() ) );
1478 res.mAuthority = QString( proj_get_id_auth_name( ensemble.get(), 0 ) );
1479 res.mCode = QString( proj_get_id_code( ensemble.get(), 0 ) );
1480 res.mRemarks = QString( proj_get_remarks( ensemble.get() ) );
1481 res.mScope = QString( proj_get_scope( ensemble.get() ) );
1482 res.mAccuracy = proj_datum_ensemble_get_accuracy( context, ensemble.get() );
1483
1484 const int memberCount = proj_datum_ensemble_get_member_count( context, ensemble.get() );
1485 for ( int i = 0; i < memberCount; ++i )
1486 {
1487 QgsProjUtils::proj_pj_unique_ptr member( proj_datum_ensemble_get_member( context, ensemble.get(), i ) );
1488 if ( !member )
1489 continue;
1490
1491 QgsDatumEnsembleMember details;
1492 details.mName = QString( proj_get_name( member.get() ) );
1493 details.mAuthority = QString( proj_get_id_auth_name( member.get(), 0 ) );
1494 details.mCode = QString( proj_get_id_code( member.get(), 0 ) );
1495 details.mRemarks = QString( proj_get_remarks( member.get() ) );
1496 details.mScope = QString( proj_get_scope( member.get() ) );
1497
1498 res.mMembers << details;
1499 }
1500 return res;
1501#else
1502 throw QgsNotSupportedException( QObject::tr( "Calculating datum ensembles requires a QGIS build based on PROJ 8.0 or later" ) );
1503#endif
1504}
1505
1507{
1509
1510 // we have to make a transformation object corresponding to the crs
1511 QString projString = toProj();
1512 projString.replace( QLatin1String( "+type=crs" ), QString() );
1513
1514 QgsProjUtils::proj_pj_unique_ptr transformation( proj_create( QgsProjContext::get(), projString.toUtf8().constData() ) );
1515 if ( !transformation )
1516 return res;
1517
1518 PJ_COORD coord = proj_coord( 0, 0, 0, HUGE_VAL );
1519 coord.uv.u = point.x() * M_PI / 180.0;
1520 coord.uv.v = point.y() * M_PI / 180.0;
1521
1522 proj_errno_reset( transformation.get() );
1523 const PJ_FACTORS pjFactors = proj_factors( transformation.get(), coord );
1524 if ( proj_errno( transformation.get() ) )
1525 {
1526 return res;
1527 }
1528
1529 res.mIsValid = true;
1530 res.mMeridionalScale = pjFactors.meridional_scale;
1531 res.mParallelScale = pjFactors.parallel_scale;
1532 res.mArealScale = pjFactors.areal_scale;
1533 res.mAngularDistortion = pjFactors.angular_distortion;
1534 res.mMeridianParallelAngle = pjFactors.meridian_parallel_angle * 180 / M_PI;
1535 res.mMeridianConvergence = pjFactors.meridian_convergence * 180 / M_PI;
1536 res.mTissotSemimajor = pjFactors.tissot_semimajor;
1537 res.mTissotSemiminor = pjFactors.tissot_semiminor;
1538 res.mDxDlam = pjFactors.dx_dlam;
1539 res.mDxDphi = pjFactors.dx_dphi;
1540 res.mDyDlam = pjFactors.dy_dlam;
1541 res.mDyDphi = pjFactors.dy_dphi;
1542 return res;
1543}
1544
1546{
1547 if ( !d->mIsValid )
1548 return QgsProjOperation();
1549
1550 QgsProjOperation res;
1551
1552 // we have to make a transformation object corresponding to the crs
1553 QString projString = toProj();
1554 projString.replace( QLatin1String( "+type=crs" ), QString() );
1555 if ( projString.isEmpty() )
1556 return QgsProjOperation();
1557
1558 QgsProjUtils::proj_pj_unique_ptr transformation( proj_create( QgsProjContext::get(), projString.toUtf8().constData() ) );
1559 if ( !transformation )
1560 return res;
1561
1562 PJ_PROJ_INFO info = proj_pj_info( transformation.get() );
1563
1564 if ( info.id )
1565 {
1566 return QgsApplication::coordinateReferenceSystemRegistry()->projOperations().value( QString( info.id ) );
1567 }
1568
1569 return res;
1570}
1571
1573{
1574 if ( !d->mIsValid )
1576
1577 return d->mMapUnits;
1578}
1579
1581{
1582 if ( !d->mIsValid )
1583 return QgsRectangle();
1584
1585 PJ *obj = d->threadLocalProjObject();
1586 if ( !obj )
1587 return QgsRectangle();
1588
1589 double westLon = 0;
1590 double southLat = 0;
1591 double eastLon = 0;
1592 double northLat = 0;
1593
1594 if ( !proj_get_area_of_use( QgsProjContext::get(), obj,
1595 &westLon, &southLat, &eastLon, &northLat, nullptr ) )
1596 return QgsRectangle();
1597
1598
1599 // don't use the constructor which normalizes!
1600 QgsRectangle rect;
1601 rect.setXMinimum( westLon );
1602 rect.setYMinimum( southLat );
1603 rect.setXMaximum( eastLon );
1604 rect.setYMaximum( northLat );
1605 return rect;
1606}
1607
1609{
1610 const auto parts { authid().split( ':' ) };
1611 if ( parts.length() == 2 )
1612 {
1613 if ( parts[0] == QLatin1String( "EPSG" ) )
1614 return QStringLiteral( "http://www.opengis.net/def/crs/EPSG/0/%1" ).arg( parts[1] ) ;
1615 else if ( parts[0] == QLatin1String( "OGC" ) )
1616 {
1617 return QStringLiteral( "http://www.opengis.net/def/crs/OGC/1.3/%1" ).arg( parts[1] ) ;
1618 }
1619 else
1620 {
1621 QgsMessageLog::logMessage( QStringLiteral( "Error converting published CRS to URI %1: (not OGC or EPSG)" ).arg( authid() ), QStringLiteral( "CRS" ), Qgis::MessageLevel::Critical );
1622 }
1623 }
1624 else
1625 {
1626 QgsMessageLog::logMessage( QStringLiteral( "Error converting published CRS to URI: %1" ).arg( authid() ), QStringLiteral( "CRS" ), Qgis::MessageLevel::Critical );
1627 }
1628 return QString();
1629}
1630
1632{
1633 const auto parts { authid().split( ':' ) };
1634 if ( parts.length() == 2 )
1635 {
1636 if ( parts[0] == QLatin1String( "EPSG" ) )
1637 return QStringLiteral( "urn:ogc:def:crs:EPSG::%1" ).arg( parts[1] );
1638 else if ( parts[0] == QLatin1String( "OGC" ) )
1639 {
1640 return QStringLiteral( "urn:ogc:def:crs:OGC:1.3:%1" ).arg( parts[1] );
1641 }
1642 else
1643 {
1644 QgsMessageLog::logMessage( QStringLiteral( "Error converting published CRS to URN %1: (not OGC or EPSG)" ).arg( authid() ), QStringLiteral( "CRS" ), Qgis::MessageLevel::Critical );
1645 }
1646 }
1647 else
1648 {
1649 QgsMessageLog::logMessage( QStringLiteral( "Error converting published CRS to URN: %1" ).arg( authid() ), QStringLiteral( "CRS" ), Qgis::MessageLevel::Critical );
1650 }
1651 return QString();
1652}
1653
1654
1656{
1657 if ( !d->mIsValid )
1658 return;
1659
1660 if ( d->mSrsId >= USER_CRS_START_ID )
1661 {
1662 // user CRS, so update to new definition
1663 createFromSrsId( d->mSrsId );
1664 }
1665 else
1666 {
1667 // nothing to do -- only user CRS definitions can be changed
1668 }
1669}
1670
1671void QgsCoordinateReferenceSystem::setProjString( const QString &proj4String )
1672{
1673 d.detach();
1674 d->mProj4 = proj4String;
1675 d->mWktPreferred.clear();
1676
1677 QgsLocaleNumC l;
1678 QString trimmed = proj4String.trimmed();
1679
1680 trimmed += QLatin1String( " +type=crs" );
1682
1683 {
1684 d->setPj( QgsProjUtils::proj_pj_unique_ptr( proj_create( ctx, trimmed.toLatin1().constData() ) ) );
1685 }
1686
1687 if ( !d->hasPj() )
1688 {
1689#ifdef QGISDEBUG
1690 const int errNo = proj_context_errno( ctx );
1691 QgsDebugError( QStringLiteral( "proj string rejected: %1" ).arg( proj_errno_string( errNo ) ) );
1692#endif
1693 d->mIsValid = false;
1694 }
1695 else
1696 {
1697 d->mEllipsoidAcronym.clear();
1698 d->mIsValid = true;
1699 }
1700
1701 setMapUnits();
1702}
1703
1704bool QgsCoordinateReferenceSystem::setWktString( const QString &wkt )
1705{
1706 bool res = false;
1707 d->mIsValid = false;
1708 d->mWktPreferred.clear();
1709
1710 PROJ_STRING_LIST warnings = nullptr;
1711 PROJ_STRING_LIST grammarErrors = nullptr;
1712 {
1713 d->setPj( QgsProjUtils::proj_pj_unique_ptr( proj_create_from_wkt( QgsProjContext::get(), wkt.toLatin1().constData(), nullptr, &warnings, &grammarErrors ) ) );
1714 }
1715
1716 res = d->hasPj();
1717 if ( !res )
1718 {
1719 QgsDebugMsgLevel( QStringLiteral( "\n---------------------------------------------------------------" ), 2 );
1720 QgsDebugMsgLevel( QStringLiteral( "This CRS could *** NOT *** be set from the supplied Wkt " ), 2 );
1721 QgsDebugMsgLevel( "INPUT: " + wkt, 2 );
1722 for ( auto iter = warnings; iter && *iter; ++iter )
1723 QgsDebugMsgLevel( *iter, 2 );
1724 for ( auto iter = grammarErrors; iter && *iter; ++iter )
1725 QgsDebugMsgLevel( *iter, 2 );
1726 QgsDebugMsgLevel( QStringLiteral( "---------------------------------------------------------------\n" ), 2 );
1727 }
1728 proj_string_list_destroy( warnings );
1729 proj_string_list_destroy( grammarErrors );
1730
1731 QgsReadWriteLocker locker( *sProj4CacheLock(), QgsReadWriteLocker::Unlocked );
1732 if ( !res )
1733 {
1734 locker.changeMode( QgsReadWriteLocker::Write );
1735 if ( !sDisableWktCache )
1736 sWktCache()->insert( wkt, *this );
1737 return d->mIsValid;
1738 }
1739
1740 if ( d->hasPj() )
1741 {
1742 // try 1 - maybe we can directly grab the auth name and code from the crs already?
1743 QString authName( proj_get_id_auth_name( d->threadLocalProjObject(), 0 ) );
1744 QString authCode( proj_get_id_code( d->threadLocalProjObject(), 0 ) );
1745
1746 if ( authName.isEmpty() || authCode.isEmpty() )
1747 {
1748 // try 2, use proj's identify method and see if there's a nice candidate we can use
1749 QgsProjUtils::identifyCrs( d->threadLocalProjObject(), authName, authCode );
1750 }
1751
1752 if ( !authName.isEmpty() && !authCode.isEmpty() )
1753 {
1754 if ( loadFromAuthCode( authName, authCode ) )
1755 {
1756 locker.changeMode( QgsReadWriteLocker::Write );
1757 if ( !sDisableWktCache )
1758 sWktCache()->insert( wkt, *this );
1759 return d->mIsValid;
1760 }
1761 }
1762 else
1763 {
1764 // Still a valid CRS, just not a known one
1765 d->mIsValid = true;
1766 d->mDescription = QString( proj_get_name( d->threadLocalProjObject() ) );
1767 }
1768 setMapUnits();
1769 }
1770
1771 return d->mIsValid;
1772}
1773
1774void QgsCoordinateReferenceSystem::setMapUnits()
1775{
1776 if ( !d->mIsValid )
1777 {
1778 d->mMapUnits = Qgis::DistanceUnit::Unknown;
1779 return;
1780 }
1781
1782 if ( !d->hasPj() )
1783 {
1784 d->mMapUnits = Qgis::DistanceUnit::Unknown;
1785 return;
1786 }
1787
1788 PJ_CONTEXT *context = QgsProjContext::get();
1789 // prefer horizontal CRS units, if present
1791 if ( !crs )
1792 crs = QgsProjUtils::unboundCrs( d->threadLocalProjObject() );
1793
1794 if ( !crs )
1795 {
1796 d->mMapUnits = Qgis::DistanceUnit::Unknown;
1797 return;
1798 }
1799
1800 QgsProjUtils::proj_pj_unique_ptr coordinateSystem( proj_crs_get_coordinate_system( context, crs.get() ) );
1801 if ( !coordinateSystem )
1802 {
1803 d->mMapUnits = Qgis::DistanceUnit::Unknown;
1804 return;
1805 }
1806
1807 const int axisCount = proj_cs_get_axis_count( context, coordinateSystem.get() );
1808 if ( axisCount > 0 )
1809 {
1810 const char *outUnitName = nullptr;
1811 // Read only first axis
1812 proj_cs_get_axis_info( context, coordinateSystem.get(), 0,
1813 nullptr,
1814 nullptr,
1815 nullptr,
1816 nullptr,
1817 &outUnitName,
1818 nullptr,
1819 nullptr );
1820
1821 const QString unitName( outUnitName );
1822
1823 // proj unit names are freeform -- they differ from authority to authority :(
1824 // see https://lists.osgeo.org/pipermail/proj/2019-April/008444.html
1825 if ( unitName.compare( QLatin1String( "degree" ), Qt::CaseInsensitive ) == 0 ||
1826 unitName.compare( QLatin1String( "degree minute second" ), Qt::CaseInsensitive ) == 0 ||
1827 unitName.compare( QLatin1String( "degree minute second hemisphere" ), Qt::CaseInsensitive ) == 0 ||
1828 unitName.compare( QLatin1String( "degree minute" ), Qt::CaseInsensitive ) == 0 ||
1829 unitName.compare( QLatin1String( "degree hemisphere" ), Qt::CaseInsensitive ) == 0 ||
1830 unitName.compare( QLatin1String( "degree minute hemisphere" ), Qt::CaseInsensitive ) == 0 ||
1831 unitName.compare( QLatin1String( "hemisphere degree" ), Qt::CaseInsensitive ) == 0 ||
1832 unitName.compare( QLatin1String( "hemisphere degree minute" ), Qt::CaseInsensitive ) == 0 ||
1833 unitName.compare( QLatin1String( "hemisphere degree minute second" ), Qt::CaseInsensitive ) == 0 ||
1834 unitName.compare( QLatin1String( "degree (supplier to define representation)" ), Qt::CaseInsensitive ) == 0 )
1835 d->mMapUnits = Qgis::DistanceUnit::Degrees;
1836 else if ( unitName.compare( QLatin1String( "metre" ), Qt::CaseInsensitive ) == 0
1837 || unitName.compare( QLatin1String( "m" ), Qt::CaseInsensitive ) == 0
1838 || unitName.compare( QLatin1String( "meter" ), Qt::CaseInsensitive ) == 0 )
1839 d->mMapUnits = Qgis::DistanceUnit::Meters;
1840 else if ( unitName.compare( QLatin1String( "US survey foot" ), Qt::CaseInsensitive ) == 0 )
1841 d->mMapUnits = Qgis::DistanceUnit::FeetUSSurvey;
1842 else if ( unitName.compare( QLatin1String( "foot" ), Qt::CaseInsensitive ) == 0 )
1843 d->mMapUnits = Qgis::DistanceUnit::Feet;
1844 else if ( unitName.compare( QLatin1String( "British yard (Sears 1922)" ), Qt::CaseInsensitive ) == 0 )
1846 else if ( unitName.compare( QLatin1String( "British yard (Sears 1922 truncated)" ), Qt::CaseInsensitive ) == 0 )
1848 else if ( unitName.compare( QLatin1String( "British foot (Sears 1922)" ), Qt::CaseInsensitive ) == 0 )
1850 else if ( unitName.compare( QLatin1String( "British foot (Sears 1922 truncated)" ), Qt::CaseInsensitive ) == 0 )
1852 else if ( unitName.compare( QLatin1String( "British chain (Sears 1922)" ), Qt::CaseInsensitive ) == 0 )
1854 else if ( unitName.compare( QLatin1String( "British chain (Sears 1922 truncated)" ), Qt::CaseInsensitive ) == 0 )
1856 else if ( unitName.compare( QLatin1String( "British link (Sears 1922)" ), Qt::CaseInsensitive ) == 0 )
1858 else if ( unitName.compare( QLatin1String( "British link (Sears 1922 truncated)" ), Qt::CaseInsensitive ) == 0 )
1860 else if ( unitName.compare( QLatin1String( "British yard (Benoit 1895 A)" ), Qt::CaseInsensitive ) == 0 )
1862 else if ( unitName.compare( QLatin1String( "British foot (Benoit 1895 A)" ), Qt::CaseInsensitive ) == 0 )
1864 else if ( unitName.compare( QLatin1String( "British chain (Benoit 1895 A)" ), Qt::CaseInsensitive ) == 0 )
1866 else if ( unitName.compare( QLatin1String( "British link (Benoit 1895 A)" ), Qt::CaseInsensitive ) == 0 )
1868 else if ( unitName.compare( QLatin1String( "British yard (Benoit 1895 B)" ), Qt::CaseInsensitive ) == 0 )
1870 else if ( unitName.compare( QLatin1String( "British foot (Benoit 1895 B)" ), Qt::CaseInsensitive ) == 0 )
1872 else if ( unitName.compare( QLatin1String( "British chain (Benoit 1895 B)" ), Qt::CaseInsensitive ) == 0 )
1874 else if ( unitName.compare( QLatin1String( "British link (Benoit 1895 B)" ), Qt::CaseInsensitive ) == 0 )
1876 else if ( unitName.compare( QLatin1String( "British foot (1865)" ), Qt::CaseInsensitive ) == 0 )
1878 else if ( unitName.compare( QLatin1String( "British foot (1936)" ), Qt::CaseInsensitive ) == 0 )
1880 else if ( unitName.compare( QLatin1String( "Indian foot" ), Qt::CaseInsensitive ) == 0 )
1881 d->mMapUnits = Qgis::DistanceUnit::FeetIndian;
1882 else if ( unitName.compare( QLatin1String( "Indian foot (1937)" ), Qt::CaseInsensitive ) == 0 )
1884 else if ( unitName.compare( QLatin1String( "Indian foot (1962)" ), Qt::CaseInsensitive ) == 0 )
1886 else if ( unitName.compare( QLatin1String( "Indian foot (1975)" ), Qt::CaseInsensitive ) == 0 )
1888 else if ( unitName.compare( QLatin1String( "Indian yard" ), Qt::CaseInsensitive ) == 0 )
1889 d->mMapUnits = Qgis::DistanceUnit::YardsIndian;
1890 else if ( unitName.compare( QLatin1String( "Indian yard (1937)" ), Qt::CaseInsensitive ) == 0 )
1892 else if ( unitName.compare( QLatin1String( "Indian yard (1962)" ), Qt::CaseInsensitive ) == 0 )
1894 else if ( unitName.compare( QLatin1String( "Indian yard (1975)" ), Qt::CaseInsensitive ) == 0 )
1896 else if ( unitName.compare( QLatin1String( "Gold Coast foot" ), Qt::CaseInsensitive ) == 0 )
1897 d->mMapUnits = Qgis::DistanceUnit::FeetGoldCoast;
1898 else if ( unitName.compare( QLatin1String( "Clarke's foot" ), Qt::CaseInsensitive ) == 0 )
1899 d->mMapUnits = Qgis::DistanceUnit::FeetClarkes;
1900 else if ( unitName.compare( QLatin1String( "Clarke's yard" ), Qt::CaseInsensitive ) == 0 )
1901 d->mMapUnits = Qgis::DistanceUnit::YardsClarkes;
1902 else if ( unitName.compare( QLatin1String( "Clarke's chain" ), Qt::CaseInsensitive ) == 0 )
1903 d->mMapUnits = Qgis::DistanceUnit::ChainsClarkes;
1904 else if ( unitName.compare( QLatin1String( "Clarke's link" ), Qt::CaseInsensitive ) == 0 )
1905 d->mMapUnits = Qgis::DistanceUnit::LinksClarkes;
1906 else if ( unitName.compare( QLatin1String( "kilometre" ), Qt::CaseInsensitive ) == 0 ) //#spellok
1907 d->mMapUnits = Qgis::DistanceUnit::Kilometers;
1908 else if ( unitName.compare( QLatin1String( "centimetre" ), Qt::CaseInsensitive ) == 0 ) //#spellok
1909 d->mMapUnits = Qgis::DistanceUnit::Centimeters;
1910 else if ( unitName.compare( QLatin1String( "millimetre" ), Qt::CaseInsensitive ) == 0 ) //#spellok
1911 d->mMapUnits = Qgis::DistanceUnit::Millimeters;
1912 else if ( unitName.compare( QLatin1String( "Statute mile" ), Qt::CaseInsensitive ) == 0 )
1913 d->mMapUnits = Qgis::DistanceUnit::Miles;
1914 else if ( unitName.compare( QLatin1String( "nautical mile" ), Qt::CaseInsensitive ) == 0 )
1915 d->mMapUnits = Qgis::DistanceUnit::NauticalMiles;
1916 else if ( unitName.compare( QLatin1String( "yard" ), Qt::CaseInsensitive ) == 0 )
1917 d->mMapUnits = Qgis::DistanceUnit::Yards;
1918 else if ( unitName.compare( QLatin1String( "fathom" ), Qt::CaseInsensitive ) == 0 )
1919 d->mMapUnits = Qgis::DistanceUnit::Fathoms;
1920 else if ( unitName.compare( QLatin1String( "US survey chain" ), Qt::CaseInsensitive ) == 0 )
1922 else if ( unitName.compare( QLatin1String( "chain" ), Qt::CaseInsensitive ) == 0 )
1924 else if ( unitName.compare( QLatin1String( "link" ), Qt::CaseInsensitive ) == 0 )
1926 else if ( unitName.compare( QLatin1String( "US survey link" ), Qt::CaseInsensitive ) == 0 )
1927 d->mMapUnits = Qgis::DistanceUnit::LinksUSSurvey;
1928 else if ( unitName.compare( QLatin1String( "US survey mile" ), Qt::CaseInsensitive ) == 0 )
1929 d->mMapUnits = Qgis::DistanceUnit::MilesUSSurvey;
1930 else if ( unitName.compare( QLatin1String( "German legal metre" ), Qt::CaseInsensitive ) == 0 )
1932 // TODO - maybe more values to handle here?
1933 else
1934 d->mMapUnits = Qgis::DistanceUnit::Unknown;
1935 return;
1936 }
1937 else
1938 {
1939 d->mMapUnits = Qgis::DistanceUnit::Unknown;
1940 return;
1941 }
1942}
1943
1944
1946{
1947 if ( d->mEllipsoidAcronym.isNull() || d->mProjectionAcronym.isNull()
1948 || !d->mIsValid )
1949 {
1950 QgsDebugMsgLevel( "QgsCoordinateReferenceSystem::findMatchingProj will only "
1951 "work if prj acr ellipsoid acr and proj4string are set"
1952 " and the current projection is valid!", 4 );
1953 return 0;
1954 }
1955
1958 int myResult;
1959
1960 // Set up the query to retrieve the projection information
1961 // needed to populate the list
1962 QString mySql = QString( "select srs_id,parameters from tbl_srs where "
1963 "projection_acronym=%1 and ellipsoid_acronym=%2 order by deprecated" )
1964 .arg( QgsSqliteUtils::quotedString( d->mProjectionAcronym ),
1965 QgsSqliteUtils::quotedString( d->mEllipsoidAcronym ) );
1966 // Get the full path name to the sqlite3 spatial reference database.
1967 QString myDatabaseFileName = QgsApplication::srsDatabaseFilePath();
1968
1969 //check the db is available
1970 myResult = openDatabase( myDatabaseFileName, database );
1971 if ( myResult != SQLITE_OK )
1972 {
1973 return 0;
1974 }
1975
1976 statement = database.prepare( mySql, myResult );
1977 if ( myResult == SQLITE_OK )
1978 {
1979
1980 while ( statement.step() == SQLITE_ROW )
1981 {
1982 QString mySrsId = statement.columnAsText( 0 );
1983 QString myProj4String = statement.columnAsText( 1 );
1984 if ( toProj() == myProj4String.trimmed() )
1985 {
1986 return mySrsId.toLong();
1987 }
1988 }
1989 }
1990
1991 //
1992 // Try the users db now
1993 //
1994
1995 myDatabaseFileName = QgsApplication::qgisUserDatabaseFilePath();
1996 //check the db is available
1997 myResult = openDatabase( myDatabaseFileName, database );
1998 if ( myResult != SQLITE_OK )
1999 {
2000 return 0;
2001 }
2002
2003 statement = database.prepare( mySql, myResult );
2004
2005 if ( myResult == SQLITE_OK )
2006 {
2007 while ( statement.step() == SQLITE_ROW )
2008 {
2009 QString mySrsId = statement.columnAsText( 0 );
2010 QString myProj4String = statement.columnAsText( 1 );
2011 if ( toProj() == myProj4String.trimmed() )
2012 {
2013 return mySrsId.toLong();
2014 }
2015 }
2016 }
2017
2018 return 0;
2019}
2020
2022{
2023 // shortcut
2024 if ( d == srs.d )
2025 return true;
2026
2027 if ( !d->mIsValid && !srs.d->mIsValid )
2028 return true;
2029
2030 if ( !d->mIsValid || !srs.d->mIsValid )
2031 return false;
2032
2033 if ( !qgsNanCompatibleEquals( d->mCoordinateEpoch, srs.d->mCoordinateEpoch ) )
2034 return false;
2035
2036 const bool isUser = d->mSrsId >= USER_CRS_START_ID;
2037 const bool otherIsUser = srs.d->mSrsId >= USER_CRS_START_ID;
2038 if ( isUser != otherIsUser )
2039 return false;
2040
2041 // we can't directly compare authid for user crses -- the actual definition of these may have changed
2042 if ( !isUser && ( !d->mAuthId.isEmpty() || !srs.d->mAuthId.isEmpty() ) )
2043 return d->mAuthId == srs.d->mAuthId;
2044
2046}
2047
2049{
2050 return !( *this == srs );
2051}
2052
2053QString QgsCoordinateReferenceSystem::toWkt( Qgis::CrsWktVariant variant, bool multiline, int indentationWidth ) const
2054{
2055 if ( PJ *obj = d->threadLocalProjObject() )
2056 {
2057 const bool isDefaultPreferredFormat = variant == Qgis::CrsWktVariant::Preferred && !multiline;
2058 if ( isDefaultPreferredFormat && !d->mWktPreferred.isEmpty() )
2059 {
2060 // can use cached value
2061 return d->mWktPreferred;
2062 }
2063
2064 PJ_WKT_TYPE type = PJ_WKT1_GDAL;
2065 switch ( variant )
2066 {
2068 type = PJ_WKT1_GDAL;
2069 break;
2071 type = PJ_WKT1_ESRI;
2072 break;
2074 type = PJ_WKT2_2015;
2075 break;
2077 type = PJ_WKT2_2015_SIMPLIFIED;
2078 break;
2080 type = PJ_WKT2_2019;
2081 break;
2083 type = PJ_WKT2_2019_SIMPLIFIED;
2084 break;
2085 }
2086
2087 const QByteArray multiLineOption = QStringLiteral( "MULTILINE=%1" ).arg( multiline ? QStringLiteral( "YES" ) : QStringLiteral( "NO" ) ).toLocal8Bit();
2088 const QByteArray indentatationWidthOption = QStringLiteral( "INDENTATION_WIDTH=%1" ).arg( multiline ? QString::number( indentationWidth ) : QStringLiteral( "0" ) ).toLocal8Bit();
2089 const char *const options[] = {multiLineOption.constData(), indentatationWidthOption.constData(), nullptr};
2090 QString res = proj_as_wkt( QgsProjContext::get(), obj, type, options );
2091
2092 if ( isDefaultPreferredFormat )
2093 {
2094 // cache result for later use
2095 d->mWktPreferred = res;
2096 }
2097
2098 return res;
2099 }
2100 return QString();
2101}
2102
2103bool QgsCoordinateReferenceSystem::readXml( const QDomNode &node )
2104{
2105 d.detach();
2106 bool result = true;
2107 QDomNode srsNode = node.namedItem( QStringLiteral( "spatialrefsys" ) );
2108
2109 if ( ! srsNode.isNull() )
2110 {
2111 bool initialized = false;
2112
2113 bool ok = false;
2114 long srsid = srsNode.namedItem( QStringLiteral( "srsid" ) ).toElement().text().toLong( &ok );
2115
2116 QDomNode node;
2117
2118 if ( ok && srsid > 0 && srsid < USER_CRS_START_ID )
2119 {
2120 node = srsNode.namedItem( QStringLiteral( "authid" ) );
2121 if ( !node.isNull() )
2122 {
2123 createFromOgcWmsCrs( node.toElement().text() );
2124 if ( isValid() )
2125 {
2126 initialized = true;
2127 }
2128 }
2129
2130 if ( !initialized )
2131 {
2132 node = srsNode.namedItem( QStringLiteral( "epsg" ) );
2133 if ( !node.isNull() )
2134 {
2135 operator=( QgsCoordinateReferenceSystem::fromEpsgId( node.toElement().text().toLong() ) );
2136 if ( isValid() )
2137 {
2138 initialized = true;
2139 }
2140 }
2141 }
2142 }
2143
2144 // if wkt is present, prefer that since it's lossless (unlike proj4 strings)
2145 if ( !initialized )
2146 {
2147 // before doing anything, we grab and set the stored CRS name (description).
2148 // this way if the stored CRS doesn't match anything available locally (i.e. from Proj's db
2149 // or the user's custom CRS list), then we will correctly show the CRS with its original
2150 // name (instead of just "custom crs")
2151 const QString description = srsNode.namedItem( QStringLiteral( "description" ) ).toElement().text();
2152
2153 const QString wkt = srsNode.namedItem( QStringLiteral( "wkt" ) ).toElement().text();
2154 initialized = createFromWktInternal( wkt, description );
2155 }
2156
2157 if ( !initialized )
2158 {
2159 node = srsNode.namedItem( QStringLiteral( "proj4" ) );
2160 const QString proj4 = node.toElement().text();
2161 initialized = createFromProj( proj4 );
2162 }
2163
2164 if ( !initialized )
2165 {
2166 // Setting from elements one by one
2167 node = srsNode.namedItem( QStringLiteral( "proj4" ) );
2168 const QString proj4 = node.toElement().text();
2169 if ( !proj4.trimmed().isEmpty() )
2170 setProjString( node.toElement().text() );
2171
2172 node = srsNode.namedItem( QStringLiteral( "srsid" ) );
2173 d->mSrsId = node.toElement().text().toLong();
2174
2175 node = srsNode.namedItem( QStringLiteral( "srid" ) );
2176 d->mSRID = node.toElement().text().toLong();
2177
2178 node = srsNode.namedItem( QStringLiteral( "authid" ) );
2179 d->mAuthId = node.toElement().text();
2180
2181 node = srsNode.namedItem( QStringLiteral( "description" ) );
2182 d->mDescription = node.toElement().text();
2183
2184 node = srsNode.namedItem( QStringLiteral( "projectionacronym" ) );
2185 d->mProjectionAcronym = node.toElement().text();
2186
2187 node = srsNode.namedItem( QStringLiteral( "ellipsoidacronym" ) );
2188 d->mEllipsoidAcronym = node.toElement().text();
2189
2190 node = srsNode.namedItem( QStringLiteral( "geographicflag" ) );
2191 d->mIsGeographic = node.toElement().text() == QLatin1String( "true" );
2192
2193 d->mWktPreferred.clear();
2194
2195 //make sure the map units have been set
2196 setMapUnits();
2197 }
2198
2199 const QString epoch = srsNode.toElement().attribute( QStringLiteral( "coordinateEpoch" ) );
2200 if ( !epoch.isEmpty() )
2201 {
2202 bool epochOk = false;
2203 d->mCoordinateEpoch = epoch.toDouble( &epochOk );
2204 if ( !epochOk )
2205 d->mCoordinateEpoch = std::numeric_limits< double >::quiet_NaN();
2206 }
2207 else
2208 {
2209 d->mCoordinateEpoch = std::numeric_limits< double >::quiet_NaN();
2210 }
2211
2212 mNativeFormat = qgsEnumKeyToValue<Qgis::CrsDefinitionFormat>( srsNode.toElement().attribute( QStringLiteral( "nativeFormat" ) ), Qgis::CrsDefinitionFormat::Wkt );
2213 }
2214 else
2215 {
2216 // Return empty CRS if none was found in the XML.
2217 d = new QgsCoordinateReferenceSystemPrivate();
2218 result = false;
2219 }
2220 return result;
2221}
2222
2223bool QgsCoordinateReferenceSystem::writeXml( QDomNode &node, QDomDocument &doc ) const
2224{
2225 QDomElement layerNode = node.toElement();
2226 QDomElement srsElement = doc.createElement( QStringLiteral( "spatialrefsys" ) );
2227
2228 srsElement.setAttribute( QStringLiteral( "nativeFormat" ), qgsEnumValueToKey<Qgis::CrsDefinitionFormat>( mNativeFormat ) );
2229
2230 if ( std::isfinite( d->mCoordinateEpoch ) )
2231 {
2232 srsElement.setAttribute( QStringLiteral( "coordinateEpoch" ), d->mCoordinateEpoch );
2233 }
2234
2235 QDomElement wktElement = doc.createElement( QStringLiteral( "wkt" ) );
2236 wktElement.appendChild( doc.createTextNode( toWkt( Qgis::CrsWktVariant::Preferred ) ) );
2237 srsElement.appendChild( wktElement );
2238
2239 QDomElement proj4Element = doc.createElement( QStringLiteral( "proj4" ) );
2240 proj4Element.appendChild( doc.createTextNode( toProj() ) );
2241 srsElement.appendChild( proj4Element );
2242
2243 QDomElement srsIdElement = doc.createElement( QStringLiteral( "srsid" ) );
2244 srsIdElement.appendChild( doc.createTextNode( QString::number( srsid() ) ) );
2245 srsElement.appendChild( srsIdElement );
2246
2247 QDomElement sridElement = doc.createElement( QStringLiteral( "srid" ) );
2248 sridElement.appendChild( doc.createTextNode( QString::number( postgisSrid() ) ) );
2249 srsElement.appendChild( sridElement );
2250
2251 QDomElement authidElement = doc.createElement( QStringLiteral( "authid" ) );
2252 authidElement.appendChild( doc.createTextNode( authid() ) );
2253 srsElement.appendChild( authidElement );
2254
2255 QDomElement descriptionElement = doc.createElement( QStringLiteral( "description" ) );
2256 descriptionElement.appendChild( doc.createTextNode( description() ) );
2257 srsElement.appendChild( descriptionElement );
2258
2259 QDomElement projectionAcronymElement = doc.createElement( QStringLiteral( "projectionacronym" ) );
2260 projectionAcronymElement.appendChild( doc.createTextNode( projectionAcronym() ) );
2261 srsElement.appendChild( projectionAcronymElement );
2262
2263 QDomElement ellipsoidAcronymElement = doc.createElement( QStringLiteral( "ellipsoidacronym" ) );
2264 ellipsoidAcronymElement.appendChild( doc.createTextNode( ellipsoidAcronym() ) );
2265 srsElement.appendChild( ellipsoidAcronymElement );
2266
2267 QDomElement geographicFlagElement = doc.createElement( QStringLiteral( "geographicflag" ) );
2268 QString geoFlagText = QStringLiteral( "false" );
2269 if ( isGeographic() )
2270 {
2271 geoFlagText = QStringLiteral( "true" );
2272 }
2273
2274 geographicFlagElement.appendChild( doc.createTextNode( geoFlagText ) );
2275 srsElement.appendChild( geographicFlagElement );
2276
2277 layerNode.appendChild( srsElement );
2278
2279 return true;
2280}
2281
2282//
2283// Static helper methods below this point only please!
2284//
2285
2286
2287// Returns the whole proj4 string for the selected srsid
2288//this is a static method! NOTE I've made it private for now to reduce API clutter TS
2289QString QgsCoordinateReferenceSystem::projFromSrsId( const int srsId )
2290{
2291 QString myDatabaseFileName;
2292 QString myProjString;
2293 QString mySql = QStringLiteral( "select parameters from tbl_srs where srs_id = %1 order by deprecated" ).arg( srsId );
2294
2295 //
2296 // Determine if this is a user projection or a system on
2297 // user projection defs all have srs_id >= 100000
2298 //
2299 if ( srsId >= USER_CRS_START_ID )
2300 {
2301 myDatabaseFileName = QgsApplication::qgisUserDatabaseFilePath();
2302 QFileInfo myFileInfo;
2303 myFileInfo.setFile( myDatabaseFileName );
2304 if ( !myFileInfo.exists() ) //its unlikely that this condition will ever be reached
2305 {
2306 QgsDebugError( QStringLiteral( "users qgis.db not found" ) );
2307 return QString();
2308 }
2309 }
2310 else //must be a system projection then
2311 {
2312 myDatabaseFileName = QgsApplication::srsDatabaseFilePath();
2313 }
2314
2317
2318 int rc;
2319 rc = openDatabase( myDatabaseFileName, database );
2320 if ( rc )
2321 {
2322 return QString();
2323 }
2324
2325 statement = database.prepare( mySql, rc );
2326
2327 if ( rc == SQLITE_OK )
2328 {
2329 if ( statement.step() == SQLITE_ROW )
2330 {
2331 myProjString = statement.columnAsText( 0 );
2332 }
2333 }
2334
2335 return myProjString;
2336}
2337
2338int QgsCoordinateReferenceSystem::openDatabase( const QString &path, sqlite3_database_unique_ptr &database, bool readonly )
2339{
2340 int myResult;
2341 if ( readonly )
2342 myResult = database.open_v2( path, SQLITE_OPEN_READONLY, nullptr );
2343 else
2344 myResult = database.open( path );
2345
2346 if ( myResult != SQLITE_OK )
2347 {
2348 QgsDebugError( "Can't open database: " + database.errorMessage() );
2349 // XXX This will likely never happen since on open, sqlite creates the
2350 // database if it does not exist.
2351 // ... unfortunately it happens on Windows
2352 QgsMessageLog::logMessage( QObject::tr( "Could not open CRS database %1\nError(%2): %3" )
2353 .arg( path )
2354 .arg( myResult )
2355 .arg( database.errorMessage() ), QObject::tr( "CRS" ) );
2356 }
2357 return myResult;
2358}
2359
2361{
2362 sCustomSrsValidation = f;
2363}
2364
2366{
2367 return sCustomSrsValidation;
2368}
2369
2370void QgsCoordinateReferenceSystem::debugPrint()
2371{
2372 QgsDebugMsgLevel( QStringLiteral( "***SpatialRefSystem***" ), 1 );
2373 QgsDebugMsgLevel( "* Valid : " + ( d->mIsValid ? QString( "true" ) : QString( "false" ) ), 1 );
2374 QgsDebugMsgLevel( "* SrsId : " + QString::number( d->mSrsId ), 1 );
2375 QgsDebugMsgLevel( "* Proj4 : " + toProj(), 1 );
2377 QgsDebugMsgLevel( "* Desc. : " + d->mDescription, 1 );
2379 {
2380 QgsDebugMsgLevel( QStringLiteral( "* Units : meters" ), 1 );
2381 }
2382 else if ( mapUnits() == Qgis::DistanceUnit::Feet )
2383 {
2384 QgsDebugMsgLevel( QStringLiteral( "* Units : feet" ), 1 );
2385 }
2386 else if ( mapUnits() == Qgis::DistanceUnit::Degrees )
2387 {
2388 QgsDebugMsgLevel( QStringLiteral( "* Units : degrees" ), 1 );
2389 }
2390}
2391
2393{
2394 mValidationHint = html;
2395}
2396
2398{
2399 return mValidationHint;
2400}
2401
2406
2408{
2409 mNativeFormat = format;
2410}
2411
2413{
2414 return mNativeFormat;
2415}
2416
2417long QgsCoordinateReferenceSystem::getRecordCount()
2418{
2421 int myResult;
2422 long myRecordCount = 0;
2423 //check the db is available
2424 myResult = database.open_v2( QgsApplication::qgisUserDatabaseFilePath(), SQLITE_OPEN_READONLY, nullptr );
2425 if ( myResult != SQLITE_OK )
2426 {
2427 QgsDebugError( QStringLiteral( "Can't open database: %1" ).arg( database.errorMessage() ) );
2428 return 0;
2429 }
2430 // Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
2431 QString mySql = QStringLiteral( "select count(*) from tbl_srs" );
2432 statement = database.prepare( mySql, myResult );
2433 if ( myResult == SQLITE_OK )
2434 {
2435 if ( statement.step() == SQLITE_ROW )
2436 {
2437 QString myRecordCountString = statement.columnAsText( 0 );
2438 myRecordCount = myRecordCountString.toLong();
2439 }
2440 }
2441 return myRecordCount;
2442}
2443
2445{
2446 PJ_CONTEXT *pjContext = QgsProjContext::get();
2447 bool isGeographic = false;
2448
2449 // check horizontal CRS units
2451 if ( !horizontalCrs )
2452 return false;
2453
2454 QgsProjUtils::proj_pj_unique_ptr coordinateSystem( proj_crs_get_coordinate_system( pjContext, horizontalCrs.get() ) );
2455 if ( coordinateSystem )
2456 {
2457 const int axisCount = proj_cs_get_axis_count( pjContext, coordinateSystem.get() );
2458 if ( axisCount > 0 )
2459 {
2460 const char *outUnitAuthName = nullptr;
2461 const char *outUnitAuthCode = nullptr;
2462 // Read only first axis
2463 proj_cs_get_axis_info( pjContext, coordinateSystem.get(), 0,
2464 nullptr,
2465 nullptr,
2466 nullptr,
2467 nullptr,
2468 nullptr,
2469 &outUnitAuthName,
2470 &outUnitAuthCode );
2471
2472 if ( outUnitAuthName && outUnitAuthCode )
2473 {
2474 const char *unitCategory = nullptr;
2475 if ( proj_uom_get_info_from_database( pjContext, outUnitAuthName, outUnitAuthCode, nullptr, nullptr, &unitCategory ) )
2476 {
2477 isGeographic = QString( unitCategory ).compare( QLatin1String( "angular" ), Qt::CaseInsensitive ) == 0;
2478 }
2479 }
2480 }
2481 }
2482 return isGeographic;
2483}
2484
2485void getOperationAndEllipsoidFromProjString( const QString &proj, QString &operation, QString &ellipsoid )
2486{
2487 thread_local const QRegularExpression projRegExp( QStringLiteral( "\\+proj=(\\S+)" ) );
2488 const QRegularExpressionMatch projMatch = projRegExp.match( proj );
2489 if ( !projMatch.hasMatch() )
2490 {
2491 QgsDebugMsgLevel( QStringLiteral( "no +proj argument found [%2]" ).arg( proj ), 2 );
2492 return;
2493 }
2494 operation = projMatch.captured( 1 );
2495
2496 const QRegularExpressionMatch ellipseMatch = projRegExp.match( proj );
2497 if ( ellipseMatch.hasMatch() )
2498 {
2499 ellipsoid = ellipseMatch.captured( 1 );
2500 }
2501 else
2502 {
2503 // satisfy not null constraint on ellipsoid_acronym field
2504 // possibly we should drop the constraint, yet the crses with missing ellipsoid_acronym are malformed
2505 // and will result in oddities within other areas of QGIS (e.g. project ellipsoid won't be correctly
2506 // set for these CRSes). Better just hack around and make the constraint happy for now,
2507 // and hope that the definitions get corrected in future.
2508 ellipsoid = "";
2509 }
2510}
2511
2512
2513bool QgsCoordinateReferenceSystem::loadFromAuthCode( const QString &auth, const QString &code )
2514{
2515 if ( !QgsApplication::coordinateReferenceSystemRegistry()->authorities().contains( auth.toLower() ) )
2516 return false;
2517
2518 d.detach();
2519 d->mIsValid = false;
2520 d->mWktPreferred.clear();
2521
2522 PJ_CONTEXT *pjContext = QgsProjContext::get();
2523 QgsProjUtils::proj_pj_unique_ptr crs( proj_create_from_database( pjContext, auth.toUtf8().constData(), code.toUtf8().constData(), PJ_CATEGORY_CRS, false, nullptr ) );
2524 if ( !crs )
2525 {
2526 return false;
2527 }
2528
2529 crs = QgsProjUtils::unboundCrs( crs.get() );
2530
2531 QString proj4 = getFullProjString( crs.get() );
2532 proj4.replace( QLatin1String( "+type=crs" ), QString() );
2533 proj4 = proj4.trimmed();
2534
2535 d->mIsValid = true;
2536 d->mProj4 = proj4;
2537 d->mWktPreferred.clear();
2538 d->mDescription = QString( proj_get_name( crs.get() ) );
2539 d->mAuthId = QStringLiteral( "%1:%2" ).arg( auth, code );
2540 d->mIsGeographic = testIsGeographic( crs.get() );
2541 d->mAxisInvertedDirty = true;
2542 QString operation;
2543 QString ellipsoid;
2545 d->mProjectionAcronym = operation;
2546 d->mEllipsoidAcronym.clear();
2547 d->setPj( std::move( crs ) );
2548
2549 const QString dbVals = sAuthIdToQgisSrsIdMap.value( QStringLiteral( "%1:%2" ).arg( auth, code ).toUpper() );
2550 if ( !dbVals.isEmpty() )
2551 {
2552 const QStringList parts = dbVals.split( ',' );
2553 d->mSrsId = parts.at( 0 ).toInt();
2554 d->mSRID = parts.at( 1 ).toInt();
2555 }
2556
2557 setMapUnits();
2558
2559 return true;
2560}
2561
2562QList<long> QgsCoordinateReferenceSystem::userSrsIds()
2563{
2564 QList<long> results;
2565 // check user defined projection database
2566 const QString db = QgsApplication::qgisUserDatabaseFilePath();
2567
2568 QFileInfo myInfo( db );
2569 if ( !myInfo.exists() )
2570 {
2571 QgsDebugError( "failed : " + db + " does not exist!" );
2572 return results;
2573 }
2574
2577
2578 //check the db is available
2579 int result = openDatabase( db, database );
2580 if ( result != SQLITE_OK )
2581 {
2582 QgsDebugError( "failed : " + db + " could not be opened!" );
2583 return results;
2584 }
2585
2586 QString sql = QStringLiteral( "select srs_id from tbl_srs where srs_id >= %1" ).arg( USER_CRS_START_ID );
2587 int rc;
2588 statement = database.prepare( sql, rc );
2589 while ( true )
2590 {
2591 int ret = statement.step();
2592
2593 if ( ret == SQLITE_DONE )
2594 {
2595 // there are no more rows to fetch - we can stop looping
2596 break;
2597 }
2598
2599 if ( ret == SQLITE_ROW )
2600 {
2601 results.append( statement.columnAsInt64( 0 ) );
2602 }
2603 else
2604 {
2605 QgsMessageLog::logMessage( QObject::tr( "SQLite error: %2\nSQL: %1" ).arg( sql, sqlite3_errmsg( database.get() ) ), QObject::tr( "SpatiaLite" ) );
2606 break;
2607 }
2608 }
2609
2610 return results;
2611}
2612
2613long QgsCoordinateReferenceSystem::matchToUserCrs() const
2614{
2615 PJ *obj = d->threadLocalProjObject();
2616 if ( !obj )
2617 return 0;
2618
2619 const QList< long > ids = userSrsIds();
2620 for ( long id : ids )
2621 {
2623 if ( candidate.projObject() && proj_is_equivalent_to( obj, candidate.projObject(), PJ_COMP_EQUIVALENT ) )
2624 {
2625 return id;
2626 }
2627 }
2628 return 0;
2629}
2630
2631static void sync_db_proj_logger( void * /* user_data */, int level, const char *message )
2632{
2633#ifndef QGISDEBUG
2634 Q_UNUSED( message )
2635#endif
2636 if ( level == PJ_LOG_ERROR )
2637 {
2638 QgsDebugMsgLevel( QStringLiteral( "PROJ: %1" ).arg( message ), 2 );
2639 }
2640 else if ( level == PJ_LOG_DEBUG )
2641 {
2642 QgsDebugMsgLevel( QStringLiteral( "PROJ: %1" ).arg( message ), 3 );
2643 }
2644}
2645
2647{
2648 setlocale( LC_ALL, "C" );
2649 QString dbFilePath = QgsApplication::srsDatabaseFilePath();
2650
2651 int inserted = 0, updated = 0, deleted = 0, errors = 0;
2652
2653 QgsDebugMsgLevel( QStringLiteral( "Load srs db from: %1" ).arg( QgsApplication::srsDatabaseFilePath().toLocal8Bit().constData() ), 4 );
2654
2656 if ( database.open( dbFilePath ) != SQLITE_OK )
2657 {
2658 QgsDebugError( QStringLiteral( "Could not open database: %1 (%2)\n" ).arg( QgsApplication::srsDatabaseFilePath(), database.errorMessage() ) );
2659 return -1;
2660 }
2661
2662 if ( sqlite3_exec( database.get(), "BEGIN TRANSACTION", nullptr, nullptr, nullptr ) != SQLITE_OK )
2663 {
2664 QgsDebugError( QStringLiteral( "Could not begin transaction: %1 (%2)\n" ).arg( QgsApplication::srsDatabaseFilePath(), database.errorMessage() ) );
2665 return -1;
2666 }
2667
2669 int result;
2670 char *errMsg = nullptr;
2671
2672 bool createdTypeColumn = false;
2673 if ( sqlite3_exec( database.get(), "ALTER TABLE tbl_srs ADD COLUMN srs_type text", nullptr, nullptr, nullptr ) == SQLITE_OK )
2674 {
2675 createdTypeColumn = true;
2676 if ( sqlite3_exec( database.get(), "CREATE INDEX srs_type ON tbl_srs(srs_type)", nullptr, nullptr, nullptr ) != SQLITE_OK )
2677 {
2678 QgsDebugError( QStringLiteral( "Could not create index for srs_type" ) );
2679 return -1;
2680 }
2681 }
2682
2683 if ( sqlite3_exec( database.get(), "create table tbl_info (proj_major INT, proj_minor INT, proj_patch INT)", nullptr, nullptr, nullptr ) == SQLITE_OK )
2684 {
2685 QString sql = QStringLiteral( "INSERT INTO tbl_info(proj_major, proj_minor, proj_patch) VALUES (%1, %2,%3)" )
2686 .arg( QString::number( PROJ_VERSION_MAJOR ),
2687 QString::number( PROJ_VERSION_MINOR ),
2688 QString::number( PROJ_VERSION_PATCH ) );
2689 if ( sqlite3_exec( database.get(), sql.toUtf8(), nullptr, nullptr, &errMsg ) != SQLITE_OK )
2690 {
2691 QgsDebugError( QStringLiteral( "Could not execute: %1 [%2/%3]\n" ).arg(
2692 sql,
2693 database.errorMessage(),
2694 errMsg ? errMsg : "(unknown error)" ) );
2695 if ( errMsg )
2696 sqlite3_free( errMsg );
2697 return -1;
2698 }
2699 }
2700 else
2701 {
2702 // retrieve last update details
2703 QString sql = QStringLiteral( "SELECT proj_major, proj_minor, proj_patch FROM tbl_info" );
2704 statement = database.prepare( sql, result );
2705 if ( result != SQLITE_OK )
2706 {
2707 QgsDebugError( QStringLiteral( "Could not prepare: %1 [%2]\n" ).arg( sql, database.errorMessage() ) );
2708 return -1;
2709 }
2710 if ( statement.step() == SQLITE_ROW )
2711 {
2712 int major = statement.columnAsInt64( 0 );
2713 int minor = statement.columnAsInt64( 1 );
2714 int patch = statement.columnAsInt64( 2 );
2715 if ( !createdTypeColumn && major == PROJ_VERSION_MAJOR && minor == PROJ_VERSION_MINOR && patch == PROJ_VERSION_PATCH )
2716 // yay, nothing to do!
2717 return 0;
2718 }
2719 else
2720 {
2721 QgsDebugError( QStringLiteral( "Could not retrieve previous CRS sync PROJ version number" ) );
2722 return -1;
2723 }
2724 }
2725
2726 PJ_CONTEXT *pjContext = QgsProjContext::get();
2727 // silence proj warnings
2728 proj_log_func( pjContext, nullptr, sync_db_proj_logger );
2729
2730 PROJ_STRING_LIST authorities = proj_get_authorities_from_database( pjContext );
2731
2732 int nextSrsId = 67218;
2733 int nextSrId = 520007218;
2734 for ( auto authIter = authorities; authIter && *authIter; ++authIter )
2735 {
2736 const QString authority( *authIter );
2737 QgsDebugMsgLevel( QStringLiteral( "Loading authority '%1'" ).arg( authority ), 2 );
2738 PROJ_STRING_LIST codes = proj_get_codes_from_database( pjContext, *authIter, PJ_TYPE_CRS, true );
2739
2740 QStringList allCodes;
2741
2742 for ( auto codesIter = codes; codesIter && *codesIter; ++codesIter )
2743 {
2744 const QString code( *codesIter );
2745 allCodes << QgsSqliteUtils::quotedString( code );
2746 QgsDebugMsgLevel( QStringLiteral( "Loading code '%1'" ).arg( code ), 4 );
2747 QgsProjUtils::proj_pj_unique_ptr crs( proj_create_from_database( pjContext, *authIter, *codesIter, PJ_CATEGORY_CRS, false, nullptr ) );
2748 if ( !crs )
2749 {
2750 QgsDebugError( QStringLiteral( "Could not load '%1:%2'" ).arg( authority, code ) );
2751 continue;
2752 }
2753
2754 const PJ_TYPE pjType = proj_get_type( crs.get( ) );
2755
2756 QString srsTypeString;
2757 // NOLINTBEGIN(bugprone-branch-clone)
2758 switch ( pjType )
2759 {
2760 // don't need these in the CRS db
2761 case PJ_TYPE_ELLIPSOID:
2762 case PJ_TYPE_PRIME_MERIDIAN:
2763 case PJ_TYPE_GEODETIC_REFERENCE_FRAME:
2764 case PJ_TYPE_DYNAMIC_GEODETIC_REFERENCE_FRAME:
2765 case PJ_TYPE_VERTICAL_REFERENCE_FRAME:
2766 case PJ_TYPE_DYNAMIC_VERTICAL_REFERENCE_FRAME:
2767 case PJ_TYPE_DATUM_ENSEMBLE:
2768 case PJ_TYPE_CONVERSION:
2769 case PJ_TYPE_TRANSFORMATION:
2770 case PJ_TYPE_CONCATENATED_OPERATION:
2771 case PJ_TYPE_OTHER_COORDINATE_OPERATION:
2772 case PJ_TYPE_TEMPORAL_DATUM:
2773 case PJ_TYPE_ENGINEERING_DATUM:
2774 case PJ_TYPE_PARAMETRIC_DATUM:
2775 case PJ_TYPE_UNKNOWN:
2776 continue;
2777
2778 case PJ_TYPE_CRS:
2779 case PJ_TYPE_GEOGRAPHIC_CRS:
2780 continue; // not possible
2781
2782 case PJ_TYPE_GEODETIC_CRS:
2783 srsTypeString = qgsEnumValueToKey( Qgis::CrsType::Geodetic );
2784 break;
2785
2786 case PJ_TYPE_GEOCENTRIC_CRS:
2788 break;
2789
2790 case PJ_TYPE_GEOGRAPHIC_2D_CRS:
2792 break;
2793
2794 case PJ_TYPE_GEOGRAPHIC_3D_CRS:
2796 break;
2797
2798 case PJ_TYPE_PROJECTED_CRS:
2800 break;
2801
2802 case PJ_TYPE_COMPOUND_CRS:
2803 srsTypeString = qgsEnumValueToKey( Qgis::CrsType::Compound );
2804 break;
2805
2806 case PJ_TYPE_TEMPORAL_CRS:
2807 srsTypeString = qgsEnumValueToKey( Qgis::CrsType::Temporal );
2808 break;
2809
2810 case PJ_TYPE_ENGINEERING_CRS:
2812 break;
2813
2814 case PJ_TYPE_BOUND_CRS:
2815 srsTypeString = qgsEnumValueToKey( Qgis::CrsType::Bound );
2816 break;
2817
2818 case PJ_TYPE_VERTICAL_CRS:
2819 srsTypeString = qgsEnumValueToKey( Qgis::CrsType::Vertical );
2820 break;
2821
2822#if PROJ_VERSION_MAJOR>9 || (PROJ_VERSION_MAJOR==9 && PROJ_VERSION_MINOR>=2)
2823 case PJ_TYPE_DERIVED_PROJECTED_CRS:
2825 break;
2826 case PJ_TYPE_COORDINATE_METADATA:
2827 continue;
2828#endif
2829 case PJ_TYPE_OTHER_CRS:
2830 srsTypeString = qgsEnumValueToKey( Qgis::CrsType::Other );
2831 break;
2832 }
2833 // NOLINTEND(bugprone-branch-clone)
2834
2835 crs = QgsProjUtils::unboundCrs( crs.get() );
2836
2837 QString proj4 = getFullProjString( crs.get() );
2838 proj4.replace( QLatin1String( "+type=crs" ), QString() );
2839 proj4 = proj4.trimmed();
2840
2841 if ( proj4.isEmpty() )
2842 {
2843 QgsDebugMsgLevel( QStringLiteral( "No proj4 for '%1:%2'" ).arg( authority, code ), 2 );
2844 // satisfy not null constraint
2845 proj4 = "";
2846 }
2847
2848 // there's a not-null constraint on these columns, so we must use empty strings instead
2849 QString operation = "";
2850 QString ellps = "";
2852
2853 const QString translatedOperation = QgsCoordinateReferenceSystemUtils::translateProjection( operation );
2854 if ( translatedOperation.isEmpty() && !operation.isEmpty() )
2855 {
2856 std::cout << QStringLiteral( "Operation needs translation in QgsCoordinateReferenceSystemUtils::translateProjection: %1" ).arg( operation ).toLocal8Bit().constData() << std::endl;
2857 qFatal( "aborted" );
2858 }
2859
2860 const bool deprecated = proj_is_deprecated( crs.get() );
2861 const QString name( proj_get_name( crs.get() ) );
2862
2863 QString sql = QStringLiteral( "SELECT parameters,description,deprecated,srs_type FROM tbl_srs WHERE auth_name='%1' AND auth_id='%2'" ).arg( authority, code );
2864 statement = database.prepare( sql, result );
2865 if ( result != SQLITE_OK )
2866 {
2867 QgsDebugError( QStringLiteral( "Could not prepare: %1 [%2]\n" ).arg( sql, database.errorMessage() ) );
2868 continue;
2869 }
2870
2871 QString dbSrsProj4;
2872 QString dbSrsDesc;
2873 QString dbSrsType;
2874 bool dbSrsDeprecated = deprecated;
2875 if ( statement.step() == SQLITE_ROW )
2876 {
2877 dbSrsProj4 = statement.columnAsText( 0 );
2878 dbSrsDesc = statement.columnAsText( 1 );
2879 dbSrsDeprecated = statement.columnAsText( 2 ).toInt() != 0;
2880 dbSrsType = statement.columnAsText( 3 );
2881 }
2882
2883 if ( !dbSrsProj4.isEmpty() || !dbSrsDesc.isEmpty() )
2884 {
2885 if ( proj4 != dbSrsProj4 || name != dbSrsDesc || deprecated != dbSrsDeprecated || dbSrsType != srsTypeString )
2886 {
2887 errMsg = nullptr;
2888 sql = QStringLiteral( "UPDATE tbl_srs SET parameters=%1,description=%2,deprecated=%3, srs_type=%4 WHERE auth_name=%5 AND auth_id=%6" )
2889 .arg( QgsSqliteUtils::quotedString( proj4 ) )
2890 .arg( QgsSqliteUtils::quotedString( name ) )
2891 .arg( deprecated ? 1 : 0 )
2892 .arg( QgsSqliteUtils::quotedString( srsTypeString ),
2894
2895 if ( sqlite3_exec( database.get(), sql.toUtf8(), nullptr, nullptr, &errMsg ) != SQLITE_OK )
2896 {
2897 QgsDebugError( QStringLiteral( "Could not execute: %1 [%2/%3]\n" ).arg(
2898 sql,
2899 database.errorMessage(),
2900 errMsg ? errMsg : "(unknown error)" ) );
2901 if ( errMsg )
2902 sqlite3_free( errMsg );
2903 errors++;
2904 }
2905 else
2906 {
2907 updated++;
2908 }
2909 }
2910 }
2911 else
2912 {
2913 const bool isGeographic = testIsGeographic( crs.get() );
2914
2915 // work out srid and srsid
2916 const QString dbVals = sAuthIdToQgisSrsIdMap.value( QStringLiteral( "%1:%2" ).arg( authority, code ) );
2917 QString srsId;
2918 QString srId;
2919 if ( !dbVals.isEmpty() )
2920 {
2921 const QStringList parts = dbVals.split( ',' );
2922 srsId = parts.at( 0 );
2923 srId = parts.at( 1 );
2924 }
2925 if ( srId.isEmpty() )
2926 {
2927 srId = QString::number( nextSrId );
2928 nextSrId++;
2929 }
2930 if ( srsId.isEmpty() )
2931 {
2932 srsId = QString::number( nextSrsId );
2933 nextSrsId++;
2934 }
2935
2936 if ( !srsId.isEmpty() )
2937 {
2938 sql = QStringLiteral( "INSERT INTO tbl_srs(srs_id, description,projection_acronym,ellipsoid_acronym,parameters,srid,auth_name,auth_id,is_geo,deprecated,srs_type) VALUES (%1, %2,%3,%4,%5,%6,%7,%8,%9,%10,%11)" )
2939 .arg( srsId )
2940 .arg( QgsSqliteUtils::quotedString( name ),
2944 .arg( srId )
2945 .arg( QgsSqliteUtils::quotedString( authority ) )
2946 .arg( QgsSqliteUtils::quotedString( code ) )
2947 .arg( isGeographic ? 1 : 0 )
2948 .arg( deprecated ? 1 : 0 )
2949 .arg( QgsSqliteUtils::quotedString( srsTypeString ) );
2950 }
2951 else
2952 {
2953 sql = QStringLiteral( "INSERT INTO tbl_srs(description,projection_acronym,ellipsoid_acronym,parameters,srid,auth_name,auth_id,is_geo,deprecated,srs_type) VALUES (%1,%2,%3,%4,%5,%6,%7,%8,%9,%10)" )
2954 .arg( QgsSqliteUtils::quotedString( name ),
2958 .arg( srId )
2959 .arg( QgsSqliteUtils::quotedString( authority ) )
2960 .arg( QgsSqliteUtils::quotedString( code ) )
2961 .arg( isGeographic ? 1 : 0 )
2962 .arg( deprecated ? 1 : 0 )
2963 .arg( QgsSqliteUtils::quotedString( srsTypeString ) );
2964 }
2965
2966 errMsg = nullptr;
2967 if ( sqlite3_exec( database.get(), sql.toUtf8(), nullptr, nullptr, &errMsg ) == SQLITE_OK )
2968 {
2969 inserted++;
2970 }
2971 else
2972 {
2973 qCritical( "Could not execute: %s [%s/%s]\n",
2974 sql.toLocal8Bit().constData(),
2975 sqlite3_errmsg( database.get() ),
2976 errMsg ? errMsg : "(unknown error)" );
2977 errors++;
2978
2979 if ( errMsg )
2980 sqlite3_free( errMsg );
2981 }
2982 }
2983 }
2984
2985 proj_string_list_destroy( codes );
2986
2987 const QString sql = QStringLiteral( "DELETE FROM tbl_srs WHERE auth_name='%1' AND NOT auth_id IN (%2)" ).arg( authority, allCodes.join( ',' ) );
2988 if ( sqlite3_exec( database.get(), sql.toUtf8(), nullptr, nullptr, nullptr ) == SQLITE_OK )
2989 {
2990 deleted = sqlite3_changes( database.get() );
2991 }
2992 else
2993 {
2994 errors++;
2995 qCritical( "Could not execute: %s [%s]\n",
2996 sql.toLocal8Bit().constData(),
2997 sqlite3_errmsg( database.get() ) );
2998 }
2999
3000 }
3001 proj_string_list_destroy( authorities );
3002
3003 QString sql = QStringLiteral( "UPDATE tbl_info set proj_major=%1,proj_minor=%2,proj_patch=%3" )
3004 .arg( QString::number( PROJ_VERSION_MAJOR ),
3005 QString::number( PROJ_VERSION_MINOR ),
3006 QString::number( PROJ_VERSION_PATCH ) );
3007 if ( sqlite3_exec( database.get(), sql.toUtf8(), nullptr, nullptr, &errMsg ) != SQLITE_OK )
3008 {
3009 QgsDebugError( QStringLiteral( "Could not execute: %1 [%2/%3]\n" ).arg(
3010 sql,
3011 database.errorMessage(),
3012 errMsg ? errMsg : "(unknown error)" ) );
3013 if ( errMsg )
3014 sqlite3_free( errMsg );
3015 return -1;
3016 }
3017
3018 if ( sqlite3_exec( database.get(), "COMMIT", nullptr, nullptr, nullptr ) != SQLITE_OK )
3019 {
3020 QgsDebugError( QStringLiteral( "Could not commit transaction: %1 [%2]\n" ).arg(
3022 sqlite3_errmsg( database.get() ) )
3023 );
3024 return -1;
3025 }
3026
3027#ifdef QGISDEBUG
3028 QgsDebugMsgLevel( QStringLiteral( "CRS update (inserted:%1 updated:%2 deleted:%3 errors:%4)" ).arg( inserted ).arg( updated ).arg( deleted ).arg( errors ), 4 );
3029#else
3030 Q_UNUSED( deleted )
3031#endif
3032
3033 if ( errors > 0 )
3034 return -errors;
3035 else
3036 return updated + inserted;
3037}
3038
3039const QHash<QString, QgsCoordinateReferenceSystem> &QgsCoordinateReferenceSystem::stringCache()
3040{
3041 return *sStringCache();
3042}
3043
3044const QHash<QString, QgsCoordinateReferenceSystem> &QgsCoordinateReferenceSystem::projCache()
3045{
3046 return *sProj4Cache();
3047}
3048
3049const QHash<QString, QgsCoordinateReferenceSystem> &QgsCoordinateReferenceSystem::ogcCache()
3050{
3051 return *sOgcCache();
3052}
3053
3054const QHash<QString, QgsCoordinateReferenceSystem> &QgsCoordinateReferenceSystem::wktCache()
3055{
3056 return *sWktCache();
3057}
3058
3059const QHash<long, QgsCoordinateReferenceSystem> &QgsCoordinateReferenceSystem::srIdCache()
3060{
3061 return *sSrIdCache();
3062}
3063
3064const QHash<long, QgsCoordinateReferenceSystem> &QgsCoordinateReferenceSystem::srsIdCache()
3065{
3066 return *sSrsIdCache();
3067}
3068
3070{
3071 if ( isGeographic() )
3072 {
3073 return *this;
3074 }
3075
3076 if ( PJ *obj = d->threadLocalProjObject() )
3077 {
3078 PJ_CONTEXT *pjContext = QgsProjContext::get();
3079 QgsProjUtils::proj_pj_unique_ptr geoCrs( proj_crs_get_geodetic_crs( pjContext, obj ) );
3080 if ( !geoCrs )
3082
3083 if ( !testIsGeographic( geoCrs.get() ) )
3085
3086 QgsProjUtils::proj_pj_unique_ptr normalized( proj_normalize_for_visualization( pjContext, geoCrs.get() ) );
3087 if ( !normalized )
3089
3090 return QgsCoordinateReferenceSystem::fromProjObject( normalized.get() );
3091 }
3092 else
3093 {
3095 }
3096}
3097
3099{
3100 switch ( type() )
3101 {
3113 return *this;
3114
3117
3119 break;
3120 }
3121
3122 if ( PJ *obj = d->threadLocalProjObject() )
3123 {
3125 if ( hozCrs )
3126 return QgsCoordinateReferenceSystem::fromProjObject( hozCrs.get() );
3127 }
3129}
3130
3132{
3133 switch ( type() )
3134 {
3147
3149 return *this;
3150
3152 break;
3153 }
3154
3155 if ( PJ *obj = d->threadLocalProjObject() )
3156 {
3158 if ( vertCrs )
3159 return QgsCoordinateReferenceSystem::fromProjObject( vertCrs.get() );
3160 }
3162}
3163
3165{
3166 if ( PJ *obj = d->threadLocalProjObject() )
3167 {
3168 return QgsProjUtils::hasVerticalAxis( obj );
3169 }
3170 return false;
3171}
3172
3174{
3175 if ( isGeographic() )
3176 {
3177 return d->mAuthId;
3178 }
3179 else if ( PJ *obj = d->threadLocalProjObject() )
3180 {
3181 QgsProjUtils::proj_pj_unique_ptr geoCrs( proj_crs_get_geodetic_crs( QgsProjContext::get(), obj ) );
3182 return geoCrs ? QStringLiteral( "%1:%2" ).arg( proj_get_id_auth_name( geoCrs.get(), 0 ), proj_get_id_code( geoCrs.get(), 0 ) ) : QString();
3183 }
3184 else
3185 {
3186 return QString();
3187 }
3188}
3189
3191{
3192 return d->threadLocalProjObject();
3193}
3194
3201
3203{
3204 d.detach();
3205 d->mIsValid = false;
3206 d->mProj4.clear();
3207 d->mWktPreferred.clear();
3208
3209 if ( !object )
3210 {
3211 return false;
3212 }
3213
3214 switch ( proj_get_type( object ) )
3215 {
3216 case PJ_TYPE_GEODETIC_CRS:
3217 case PJ_TYPE_GEOCENTRIC_CRS:
3218 case PJ_TYPE_GEOGRAPHIC_CRS:
3219 case PJ_TYPE_GEOGRAPHIC_2D_CRS:
3220 case PJ_TYPE_GEOGRAPHIC_3D_CRS:
3221 case PJ_TYPE_VERTICAL_CRS:
3222 case PJ_TYPE_PROJECTED_CRS:
3223 case PJ_TYPE_COMPOUND_CRS:
3224 case PJ_TYPE_TEMPORAL_CRS:
3225 case PJ_TYPE_ENGINEERING_CRS:
3226 case PJ_TYPE_BOUND_CRS:
3227 case PJ_TYPE_OTHER_CRS:
3228 break;
3229
3230 default:
3231 return false;
3232 }
3233
3234 d->setPj( QgsProjUtils::unboundCrs( object ) );
3235
3236 if ( !d->hasPj() )
3237 {
3238 return d->mIsValid;
3239 }
3240 else
3241 {
3242 // maybe we can directly grab the auth name and code from the crs
3243 const QString authName( proj_get_id_auth_name( d->threadLocalProjObject(), 0 ) );
3244 const QString authCode( proj_get_id_code( d->threadLocalProjObject(), 0 ) );
3245 if ( !authName.isEmpty() && !authCode.isEmpty() && createFromOgcWmsCrs( QStringLiteral( "%1:%2" ).arg( authName, authCode ) ) )
3246 {
3247 return d->mIsValid;
3248 }
3249 else
3250 {
3251 // Still a valid CRS, just not a known one
3252 d->mIsValid = true;
3253 d->mDescription = QString( proj_get_name( d->threadLocalProjObject() ) );
3254 setMapUnits();
3255 d->mIsGeographic = testIsGeographic( d->threadLocalProjObject() );
3256 }
3257 }
3258
3259 return d->mIsValid;
3260}
3261
3263{
3264 QStringList projections;
3265 const QList<QgsCoordinateReferenceSystem> res = QgsApplication::coordinateReferenceSystemRegistry()->recentCrs();
3266 projections.reserve( res.size() );
3267 for ( const QgsCoordinateReferenceSystem &crs : res )
3268 {
3269 projections << QString::number( crs.srsid() );
3270 }
3271 return projections;
3272}
3273
3278
3283
3288
3293
3295{
3296 sSrIdCacheLock()->lockForWrite();
3297 if ( !sDisableSrIdCache )
3298 {
3299 if ( disableCache )
3300 sDisableSrIdCache = true;
3301 sSrIdCache()->clear();
3302 }
3303 sSrIdCacheLock()->unlock();
3304
3305 sOgcLock()->lockForWrite();
3306 if ( !sDisableOgcCache )
3307 {
3308 if ( disableCache )
3309 sDisableOgcCache = true;
3310 sOgcCache()->clear();
3311 }
3312 sOgcLock()->unlock();
3313
3314 sProj4CacheLock()->lockForWrite();
3315 if ( !sDisableProjCache )
3316 {
3317 if ( disableCache )
3318 sDisableProjCache = true;
3319 sProj4Cache()->clear();
3320 }
3321 sProj4CacheLock()->unlock();
3322
3323 sCRSWktLock()->lockForWrite();
3324 if ( !sDisableWktCache )
3325 {
3326 if ( disableCache )
3327 sDisableWktCache = true;
3328 sWktCache()->clear();
3329 }
3330 sCRSWktLock()->unlock();
3331
3332 sCRSSrsIdLock()->lockForWrite();
3333 if ( !sDisableSrsIdCache )
3334 {
3335 if ( disableCache )
3336 sDisableSrsIdCache = true;
3337 sSrsIdCache()->clear();
3338 }
3339 sCRSSrsIdLock()->unlock();
3340
3341 sCrsStringLock()->lockForWrite();
3342 if ( !sDisableStringCache )
3343 {
3344 if ( disableCache )
3345 sDisableStringCache = true;
3346 sStringCache()->clear();
3347 }
3348 sCrsStringLock()->unlock();
3349}
3350
3351// invalid < regular < user
3353{
3354 if ( c1.d == c2.d )
3355 return false;
3356
3357 if ( !c1.d->mIsValid && !c2.d->mIsValid )
3358 return false;
3359
3360 if ( !c1.d->mIsValid && c2.d->mIsValid )
3361 return false;
3362
3363 if ( c1.d->mIsValid && !c2.d->mIsValid )
3364 return true;
3365
3366 const bool c1IsUser = c1.d->mSrsId >= USER_CRS_START_ID;
3367 const bool c2IsUser = c2.d->mSrsId >= USER_CRS_START_ID;
3368
3369 if ( c1IsUser && !c2IsUser )
3370 return true;
3371
3372 if ( !c1IsUser && c2IsUser )
3373 return false;
3374
3375 if ( !c1IsUser && !c2IsUser && !c1.d->mAuthId.isEmpty() && !c2.d->mAuthId.isEmpty() )
3376 {
3377 if ( c1.d->mAuthId != c2.d->mAuthId )
3378 return c1.d->mAuthId > c2.d->mAuthId;
3379 }
3380
3381 const QString wkt1 = c1.toWkt( Qgis::CrsWktVariant::Preferred );
3382 const QString wkt2 = c2.toWkt( Qgis::CrsWktVariant::Preferred );
3383 if ( wkt1 != wkt2 )
3384 return wkt1 > wkt2;
3385
3386 if ( c1.d->mCoordinateEpoch == c2.d->mCoordinateEpoch )
3387 return false;
3388
3389 if ( std::isnan( c1.d->mCoordinateEpoch ) && std::isnan( c2.d->mCoordinateEpoch ) )
3390 return false;
3391
3392 if ( std::isnan( c1.d->mCoordinateEpoch ) && !std::isnan( c2.d->mCoordinateEpoch ) )
3393 return false;
3394
3395 if ( !std::isnan( c1.d->mCoordinateEpoch ) && std::isnan( c2.d->mCoordinateEpoch ) )
3396 return true;
3397
3398 return c1.d->mCoordinateEpoch > c2.d->mCoordinateEpoch;
3399}
3400
3402{
3403 if ( c1.d == c2.d )
3404 return false;
3405
3406 if ( !c1.d->mIsValid && !c2.d->mIsValid )
3407 return false;
3408
3409 if ( c1.d->mIsValid && !c2.d->mIsValid )
3410 return false;
3411
3412 if ( !c1.d->mIsValid && c2.d->mIsValid )
3413 return true;
3414
3415 const bool c1IsUser = c1.d->mSrsId >= USER_CRS_START_ID;
3416 const bool c2IsUser = c2.d->mSrsId >= USER_CRS_START_ID;
3417
3418 if ( !c1IsUser && c2IsUser )
3419 return true;
3420
3421 if ( c1IsUser && !c2IsUser )
3422 return false;
3423
3424 if ( !c1IsUser && !c2IsUser && !c1.d->mAuthId.isEmpty() && !c2.d->mAuthId.isEmpty() )
3425 {
3426 if ( c1.d->mAuthId != c2.d->mAuthId )
3427 return c1.d->mAuthId < c2.d->mAuthId;
3428 }
3429
3430 const QString wkt1 = c1.toWkt( Qgis::CrsWktVariant::Preferred );
3431 const QString wkt2 = c2.toWkt( Qgis::CrsWktVariant::Preferred );
3432 if ( wkt1 != wkt2 )
3433 return wkt1 < wkt2;
3434
3435 if ( c1.d->mCoordinateEpoch == c2.d->mCoordinateEpoch )
3436 return false;
3437
3438 if ( std::isnan( c1.d->mCoordinateEpoch ) && std::isnan( c2.d->mCoordinateEpoch ) )
3439 return false;
3440
3441 if ( !std::isnan( c1.d->mCoordinateEpoch ) && std::isnan( c2.d->mCoordinateEpoch ) )
3442 return false;
3443
3444 if ( std::isnan( c1.d->mCoordinateEpoch ) && !std::isnan( c2.d->mCoordinateEpoch ) )
3445 return true;
3446
3447 return c1.d->mCoordinateEpoch < c2.d->mCoordinateEpoch;
3448}
3449
3451{
3452 return !( c1 < c2 );
3453}
3455{
3456 return !( c1 > c2 );
3457}
CrsIdentifierType
Available identifier string types for representing coordinate reference systems.
Definition qgis.h:2249
@ ShortString
A heavily abbreviated string, for use when a compact representation is required.
@ MediumString
A medium-length string, recommended for general purpose use.
DistanceUnit
Units of distance.
Definition qgis.h:4669
@ YardsBritishSears1922Truncated
British yards (Sears 1922 truncated)
@ Feet
Imperial feet.
@ MilesUSSurvey
US Survey miles.
@ LinksBritishSears1922
British links (Sears 1922)
@ YardsBritishBenoit1895A
British yards (Benoit 1895 A)
@ LinksBritishBenoit1895A
British links (Benoit 1895 A)
@ Centimeters
Centimeters.
@ YardsIndian1975
Indian yards (1975)
@ FeetUSSurvey
US Survey feet.
@ Millimeters
Millimeters.
@ FeetBritishSears1922
British feet (Sears 1922)
@ YardsClarkes
Clarke's yards.
@ YardsIndian
Indian yards.
@ FeetBritishBenoit1895B
British feet (Benoit 1895 B)
@ Miles
Terrestrial miles.
@ LinksUSSurvey
US Survey links.
@ ChainsUSSurvey
US Survey chains.
@ FeetClarkes
Clarke's feet.
@ Unknown
Unknown distance unit.
@ Yards
Imperial yards.
@ FeetBritish1936
British feet (1936)
@ FeetIndian1962
Indian feet (1962)
@ YardsBritishSears1922
British yards (Sears 1922)
@ FeetIndian1937
Indian feet (1937)
@ YardsIndian1937
Indian yards (1937)
@ Degrees
Degrees, for planar geographic CRS distance measurements.
@ ChainsBritishBenoit1895B
British chains (Benoit 1895 B)
@ LinksBritishSears1922Truncated
British links (Sears 1922 truncated)
@ ChainsBritishBenoit1895A
British chains (Benoit 1895 A)
@ YardsBritishBenoit1895B
British yards (Benoit 1895 B)
@ FeetBritish1865
British feet (1865)
@ YardsIndian1962
Indian yards (1962)
@ FeetBritishSears1922Truncated
British feet (Sears 1922 truncated)
@ MetersGermanLegal
German legal meter.
@ LinksBritishBenoit1895B
British links (Benoit 1895 B)
@ ChainsInternational
International chains.
@ LinksInternational
International links.
@ ChainsBritishSears1922Truncated
British chains (Sears 1922 truncated)
@ FeetIndian
Indian (geodetic) feet.
@ NauticalMiles
Nautical miles.
@ ChainsClarkes
Clarke's chains.
@ LinksClarkes
Clarke's links.
@ ChainsBritishSears1922
British chains (Sears 1922)
@ Kilometers
Kilometers.
@ FeetIndian1975
Indian feet (1975)
@ FeetGoldCoast
Gold Coast feet.
@ FeetBritishBenoit1895A
British feet (Benoit 1895 A)
@ Critical
Critical/error message.
Definition qgis.h:157
CrsType
Coordinate reference system types.
Definition qgis.h:2159
@ Vertical
Vertical CRS.
@ Temporal
Temporal CRS.
@ Compound
Compound (horizontal + vertical) CRS.
@ Projected
Projected CRS.
@ Other
Other type.
@ Bound
Bound CRS.
@ DerivedProjected
Derived projected CRS.
@ Unknown
Unknown type.
@ Engineering
Engineering CRS.
@ Geographic3d
3D geopraphic CRS
@ Geodetic
Geodetic CRS.
@ Geographic2d
2D geographic CRS
@ Geocentric
Geocentric CRS.
CrsDefinitionFormat
CRS definition formats.
Definition qgis.h:3605
@ Wkt
WKT format (always recommended over proj string format)
CrsAxisDirection
Coordinate reference system axis directions.
Definition qgis.h:2184
@ ColumnPositive
Column positive.
@ SouthSouthEast
South South East.
@ NorthWest
North West.
@ ColumnNegative
Column negative.
@ RowPositive
Row positive.
@ DisplayDown
Display down.
@ GeocentricZ
Geocentric (Z)
@ DisplayRight
Display right.
@ WestSouthWest
West South West.
@ RowNegative
Row negative.
@ NorthNorthEast
North North East.
@ EastNorthEast
East North East.
@ Unspecified
Unspecified.
@ NorthEast
North East.
@ NorthNorthWest
North North West.
@ GeocentricY
Geocentric (Y)
@ SouthEast
South East.
@ CounterClockwise
Counter clockwise.
@ SouthSouthWest
South South West.
@ DisplayLeft
Display left.
@ WestNorthWest
West North West.
@ EastSouthEast
East South East.
@ SouthWest
South West.
@ DisplayUp
Display up.
@ GeocentricX
Geocentric (X)
CrsWktVariant
Coordinate reference system WKT formatting variants.
Definition qgis.h:2264
@ Wkt2_2019Simplified
WKT2_2019 with the simplification rule of WKT2_SIMPLIFIED.
@ Wkt2_2015Simplified
Same as WKT2_2015 with the following exceptions: UNIT keyword used. ID node only on top element....
@ Wkt1Esri
WKT1 as traditionally output by ESRI software, deriving from OGC 99-049.
@ Preferred
Preferred format, matching the most recent WKT ISO standard. Currently an alias to WKT2_2019,...
@ Wkt2_2019
Full WKT2 string, conforming to ISO 19162:2019 / OGC 18-010, with all possible nodes and new keyword ...
@ Wkt2_2015
Full WKT2 string, conforming to ISO 19162:2015(E) / OGC 12-063r5 with all possible nodes and new keyw...
@ Wkt1Gdal
WKT1 as traditionally output by GDAL, deriving from OGC 01-009. A notable departure from WKT1_GDAL wi...
static QgsCoordinateReferenceSystemRegistry * coordinateReferenceSystemRegistry()
Returns the application's coordinate reference system (CRS) registry, which handles known CRS definit...
static QString qgisUserDatabaseFilePath()
Returns the path to the user qgis.db file.
static QString srsDatabaseFilePath()
Returns the path to the srs.db file.
void removeRecent(const QgsCoordinateReferenceSystem &crs)
Removes a CRS from the list of recently used CRS.
long addUserCrs(const QgsCoordinateReferenceSystem &crs, const QString &name, Qgis::CrsDefinitionFormat nativeFormat=Qgis::CrsDefinitionFormat::Wkt)
Adds a new crs definition as a custom ("USER") CRS.
void clearRecent()
Cleans the list of recently used CRS.
QList< QgsCoordinateReferenceSystem > recentCrs()
Returns a list of recently used CRS.
void pushRecent(const QgsCoordinateReferenceSystem &crs)
Pushes a recently used CRS to the top of the recent CRS list.
QMap< QString, QgsProjOperation > projOperations() const
Returns a map of all valid PROJ operations.
static QString translateProjection(const QString &projection)
Returns a translated string for a projection method.
This class represents a coordinate reference system (CRS).
static QgsCoordinateReferenceSystem fromOgcWmsCrs(const QString &ogcCrs)
Creates a CRS from a given OGC WMS-format Coordinate Reference System string.
bool createFromOgcWmsCrs(const QString &crs)
Sets this CRS to the given OGC WMS-format Coordinate Reference Systems.
bool isValid() const
Returns whether this CRS is correctly initialized and usable.
bool createFromWkt(const QString &wkt)
Sets this CRS using a WKT definition.
bool createFromString(const QString &definition)
Set up this CRS from a string definition.
bool hasVerticalAxis() const
Returns true if the CRS has a vertical axis.
void validate()
Perform some validation on this CRS.
QgsRectangle bounds() const
Returns the approximate bounds for the region the CRS is usable within.
QString toProj() const
Returns a Proj string representation of this CRS.
static CUSTOM_CRS_VALIDATION customCrsValidation()
Gets custom function.
bool readXml(const QDomNode &node)
Restores state from the given DOM node.
static QgsCoordinateReferenceSystem createCompoundCrs(const QgsCoordinateReferenceSystem &horizontalCrs, const QgsCoordinateReferenceSystem &verticalCrs, QString &error)
Given a horizontal and vertical CRS, attempts to create a compound CRS from them.
static Q_INVOKABLE QgsCoordinateReferenceSystem fromEpsgId(long epsg)
Creates a CRS from a given EPSG ID.
Q_DECL_DEPRECATED bool createFromProj4(const QString &projString)
Sets this CRS by passing it a PROJ style formatted string.
static Q_DECL_DEPRECATED QStringList recentProjections()
Returns a list of recently used projections.
QString ellipsoidAcronym() const
Returns the ellipsoid acronym for the ellipsoid used by the CRS.
QString toOgcUri() const
Returns the crs as OGC URI (format: http://www.opengis.net/def/crs/OGC/1.3/CRS84) Returns an empty st...
QString toOgcUrn() const
Returns the crs as OGC URN (format: urn:ogc:def:crs:OGC:1.3:CRS84) Returns an empty string on failure...
static void setCustomCrsValidation(CUSTOM_CRS_VALIDATION f)
Sets custom function to force valid CRS.
static Q_DECL_DEPRECATED void pushRecentCoordinateReferenceSystem(const QgsCoordinateReferenceSystem &crs)
Pushes a recently used CRS to the top of the recent CRS list.
long postgisSrid() const
Returns PostGIS SRID for the CRS.
QgsCoordinateReferenceSystem horizontalCrs() const
Returns the horizontal CRS associated with this CRS object.
Q_DECL_DEPRECATED long findMatchingProj()
Walks the CRS databases (both system and user database) trying to match stored PROJ string to a datab...
static QList< long > validSrsIds()
Returns a list of all valid SRS IDs present in the CRS database.
QgsProjectionFactors factors(const QgsPoint &point) const
Calculate various cartographic properties, such as scale factors, angular distortion and meridian con...
void setValidationHint(const QString &html)
Set user hint for validation.
Q_DECL_DEPRECATED QString toProj4() const
Returns a Proj string representation of this CRS.
bool operator==(const QgsCoordinateReferenceSystem &srs) const
QString projectionAcronym() const
Returns the projection acronym for the projection used by the CRS.
QString userFriendlyIdentifier(Qgis::CrsIdentifierType type=Qgis::CrsIdentifierType::MediumString) const
Returns a user friendly identifier for the CRS.
Qgis::CrsDefinitionFormat nativeFormat() const
Returns the native format for the CRS definition.
CrsType
Enumeration of types of IDs accepted in createFromId() method.
@ InternalCrsId
Internal ID used by QGIS in the local SQLite database.
@ PostgisCrsId
SRID used in PostGIS. DEPRECATED – DO NOT USE.
bool createFromUserInput(const QString &definition)
Set up this CRS from various text formats.
QgsCoordinateReferenceSystem()
Constructs an invalid CRS object.
static int syncDatabase()
Update proj.4 parameters in our database from proj.4.
bool operator!=(const QgsCoordinateReferenceSystem &srs) const
void setNativeFormat(Qgis::CrsDefinitionFormat format)
Sets the native format for the CRS definition.
bool createFromProj(const QString &projString, bool identify=true)
Sets this CRS by passing it a PROJ style formatted string.
QgsCoordinateReferenceSystem verticalCrs() const
Returns the vertical CRS associated with this CRS object.
static Q_DECL_DEPRECATED void removeRecentCoordinateReferenceSystem(const QgsCoordinateReferenceSystem &crs)
Removes a CRS from the list of recently used CRS.
QgsDatumEnsemble datumEnsemble() const
Attempts to retrieve datum ensemble details from the CRS.
QgsCoordinateReferenceSystem toGeographicCrs() const
Returns the geographic CRS associated with this CRS object.
bool isDynamic() const
Returns true if the CRS is a dynamic CRS.
bool createFromSrsId(long srsId)
Sets this CRS by lookup of internal QGIS CRS ID in the CRS database.
Q_DECL_DEPRECATED bool createFromId(long id, CrsType type=PostgisCrsId)
Sets this CRS by lookup of the given ID in the CRS database.
static QgsCoordinateReferenceSystem fromProjObject(PJ *object)
Constructs a QgsCoordinateReferenceSystem from a PROJ PJ object.
static void invalidateCache(bool disableCache=false)
Clears the internal cache used to initialize QgsCoordinateReferenceSystem objects.
QgsCoordinateReferenceSystem & operator=(const QgsCoordinateReferenceSystem &srs)
void updateDefinition()
Updates the definition and parameters of the coordinate reference system to their latest values.
static QgsCoordinateReferenceSystem fromProj(const QString &proj)
Creates a CRS from a proj style formatted string.
static Q_DECL_DEPRECATED void setupESRIWktFix()
Make sure that ESRI WKT import is done properly.
static Q_DECL_DEPRECATED QList< QgsCoordinateReferenceSystem > recentCoordinateReferenceSystems()
Returns a list of recently used CRS.
QString toWkt(Qgis::CrsWktVariant variant=Qgis::CrsWktVariant::Wkt1Gdal, bool multiline=false, int indentationWidth=4) const
Returns a WKT representation of this CRS.
PJ * projObject() const
Returns the underlying PROJ PJ object corresponding to the CRS, or nullptr if the CRS is invalid.
void setCoordinateEpoch(double epoch)
Sets the coordinate epoch, as a decimal year.
Q_DECL_DEPRECATED bool createFromSrid(long srid)
Sets this CRS by lookup of the given PostGIS SRID in the CRS database.
long saveAsUserCrs(const QString &name, Qgis::CrsDefinitionFormat nativeFormat=Qgis::CrsDefinitionFormat::Wkt)
Saves the CRS as a new custom ("USER") CRS.
static Q_DECL_DEPRECATED void clearRecentCoordinateReferenceSystems()
Cleans the list of recently used CRS.
QString celestialBodyName() const
Attempts to retrieve the name of the celestial body associated with the CRS (e.g.
static QgsCoordinateReferenceSystem fromWkt(const QString &wkt)
Creates a CRS from a WKT spatial ref sys definition string.
bool writeXml(QDomNode &node, QDomDocument &doc) const
Stores state to the given Dom node in the given document.
static QgsCoordinateReferenceSystem fromSrsId(long srsId)
Creates a CRS from a specified QGIS SRS ID.
double coordinateEpoch() const
Returns the coordinate epoch, as a decimal year.
QString geographicCrsAuthId() const
Returns auth id of related geographic CRS.
QString validationHint() const
Gets user hint for validation.
QgsProjOperation operation() const
Returns information about the PROJ operation associated with the coordinate reference system,...
QList< Qgis::CrsAxisDirection > axisOrdering() const
Returns an ordered list of the axis directions reflecting the native axis order for the CRS.
long srsid() const
Returns the internal CRS ID, if available.
Qgis::CrsType type() const
Returns the type of the CRS.
bool hasAxisInverted() const
Returns whether the axis order is inverted for the CRS compared to the order east/north (longitude/la...
bool createFromProjObject(PJ *object)
Sets this CRS by passing it a PROJ PJ object, corresponding to a PROJ CRS object.
bool isDeprecated() const
Returns true if the CRS is considered deprecated.
static Q_DECL_DEPRECATED QgsCoordinateReferenceSystem fromProj4(const QString &proj4)
Creates a CRS from a proj style formatted string.
Contains information about a member of a datum ensemble.
Definition qgsdatums.h:35
Contains information about a datum ensemble.
Definition qgsdatums.h:95
static void warning(const QString &msg)
Goes to qWarning.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
Custom exception class which is raised when an operation is not supported.
CRSFlavor
CRS flavor.
@ UNKNOWN
Unknown/unhandled flavor.
@ AUTH_CODE
E.g EPSG:4326.
static CRSFlavor parseCrsName(const QString &crsName, QString &authority, QString &code)
Parse a CRS name in one of the flavors of OGC services, and decompose it as authority and code.
static QString OGRSpatialReferenceToWkt(OGRSpatialReferenceH srs)
Returns a WKT string corresponding to the specified OGR srs object.
Point geometry type, with support for z-dimension and m-values.
Definition qgspoint.h:49
double x
Definition qgspoint.h:52
double y
Definition qgspoint.h:53
static PJ_CONTEXT * get()
Returns a thread local instance of a proj context, safe for use in the current thread.
Contains information about a PROJ operation.
static proj_pj_unique_ptr crsToHorizontalCrs(const PJ *crs)
Given a PROJ crs (which may be a compound or bound crs, or some other type), extract the horizontal c...
@ FlagMatchBoundCrsToUnderlyingSourceCrs
Allow matching a BoundCRS object to its underlying SourceCRS.
static proj_pj_unique_ptr createCompoundCrs(const PJ *horizontalCrs, const PJ *verticalCrs, QStringList *errors=nullptr)
Given a PROJ horizontal and vertical CRS, attempt to create a compound CRS from them.
static bool isDynamic(const PJ *crs)
Returns true if the given proj coordinate system is a dynamic CRS.
static proj_pj_unique_ptr unboundCrs(const PJ *crs)
Given a PROJ crs (which may be a compound or bound crs, or some other type), ensure that it is not a ...
static bool identifyCrs(const PJ *crs, QString &authName, QString &authCode, IdentifyFlags flags=IdentifyFlags())
Attempts to identify a crs, matching it to a known authority and code within an acceptable level of t...
static bool hasVerticalAxis(const PJ *crs)
Returns true if a PROJ crs has a vertical axis.
static proj_pj_unique_ptr crsToVerticalCrs(const PJ *crs)
Given a PROJ crs (which may be a compound crs, or some other type), extract the vertical crs from it.
static proj_pj_unique_ptr crsToDatumEnsemble(const PJ *crs)
Given a PROJ crs, attempt to retrieve the datum ensemble from it.
std::unique_ptr< PJ, ProjPJDeleter > proj_pj_unique_ptr
Scoped Proj PJ object.
static bool axisOrderIsSwapped(const PJ *crs)
Returns true if the given proj coordinate system uses requires y/x coordinate order instead of x/y.
contains various cartographic properties, such as scale factors, angular distortion and meridian conv...
The QgsReadWriteLocker class is a convenience class that simplifies locking and unlocking QReadWriteL...
@ Write
Lock for write.
void unlock()
Unlocks the lock.
void changeMode(Mode mode)
Change the mode of the lock to mode.
A rectangle specified with double values.
void setYMinimum(double y)
Set the minimum y value.
void setXMinimum(double x)
Set the minimum x value.
void setYMaximum(double y)
Set the maximum y value.
void setXMaximum(double x)
Set the maximum x value.
static QString quotedString(const QString &value)
Returns a quoted string value, surround by ' characters and with special characters correctly escaped...
Unique pointer for sqlite3 databases, which automatically closes the database when the pointer goes o...
sqlite3_statement_unique_ptr prepare(const QString &sql, int &resultCode) const
Prepares a sql statement, returning the result.
int open(const QString &path)
Opens the database at the specified file path.
QString errorMessage() const
Returns the most recent error message encountered by the database.
int open_v2(const QString &path, int flags, const char *zVfs)
Opens the database at the specified file path.
Unique pointer for sqlite3 prepared statements, which automatically finalizes the statement when the ...
QString columnAsText(int column) const
Returns the column value from the current statement row as a string.
QString columnName(int column) const
Returns the name of column.
int step()
Steps to the next record in the statement, returning the sqlite3 result code.
qlonglong columnAsInt64(int column) const
Gets column value from the current statement row as a long long integer (64 bits).
int columnCount() const
Gets the number of columns that this statement returns.
#define Q_NOWARN_DEPRECATED_POP
Definition qgis.h:6494
QString qgsDoubleToString(double a, int precision=17)
Returns a string representation of a double.
Definition qgis.h:5834
QString qgsEnumValueToKey(const T &value, bool *returnOk=nullptr)
Returns the value for the given key of an enum.
Definition qgis.h:6108
#define Q_NOWARN_DEPRECATED_PUSH
Definition qgis.h:6493
bool qgsNanCompatibleEquals(double a, double b)
Compare two doubles, treating nan values as equal.
Definition qgis.h:5879
const int USER_CRS_START_ID
Magick number that determines whether a projection crsid is a system (srs.db) or user (~/....
Definition qgis.h:6442
QString getFullProjString(PJ *obj)
bool operator>=(const QgsCoordinateReferenceSystem &c1, const QgsCoordinateReferenceSystem &c2)
bool operator<(const QgsCoordinateReferenceSystem &c1, const QgsCoordinateReferenceSystem &c2)
bool testIsGeographic(PJ *crs)
void getOperationAndEllipsoidFromProjString(const QString &proj, QString &operation, QString &ellipsoid)
QHash< QString, QgsCoordinateReferenceSystem > StringCrsCacheHash
bool operator<=(const QgsCoordinateReferenceSystem &c1, const QgsCoordinateReferenceSystem &c2)
QHash< long, QgsCoordinateReferenceSystem > SrIdCrsCacheHash
bool operator>(const QgsCoordinateReferenceSystem &c1, const QgsCoordinateReferenceSystem &c2)
void * OGRSpatialReferenceH
struct PJconsts PJ
struct projCtx_t PJ_CONTEXT
void(* CUSTOM_CRS_VALIDATION)(QgsCoordinateReferenceSystem &)
const QMap< QString, QString > sAuthIdToQgisSrsIdMap
Q_GLOBAL_STATIC(QReadWriteLock, sDefinitionCacheLock)
#define QgsDebugMsgLevel(str, level)
Definition qgslogger.h:39
#define QgsDebugError(str)
Definition qgslogger.h:38
const QgsCoordinateReferenceSystem & crs