/
testqgslabelingengine.cpp
2635 lines (2171 loc) · 108 KB
/
testqgslabelingengine.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/***************************************************************************
testqgslabelingengine.cpp
--------------------------------------
Date : September 2015
Copyright : (C) 2015 by Martin Dobias
Email : wonder dot sk at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgstest.h"
#include <qgsapplication.h>
#include <qgslabelingengine.h>
#include <qgsproject.h>
#include <qgsmaprenderersequentialjob.h>
#include <qgsreadwritecontext.h>
#include <qgsrulebasedlabeling.h>
#include <qgsvectorlayer.h>
#include <qgsvectorlayerdiagramprovider.h>
#include <qgsvectorlayerlabeling.h>
#include <qgsvectorlayerlabelprovider.h>
#include "qgsmultirenderchecker.h"
#include "qgsfontutils.h"
#include "qgsnullsymbolrenderer.h"
#include "pointset.h"
class TestQgsLabelingEngine : public QObject
{
Q_OBJECT
public:
TestQgsLabelingEngine() = default;
private slots:
void initTestCase();
void cleanupTestCase();
void init();// will be called before each testfunction is executed.
void cleanup();// will be called after every testfunction.
void testEngineSettings();
void testBasic();
void testDiagrams();
void testRuleBased();
void zOrder(); //test that labels are stacked correctly
void testEncodeDecodePositionOrder();
void testEncodeDecodeLinePlacement();
void testSubstitutions();
void testCapitalization();
void testNumberFormat();
void testParticipatingLayers();
void testRegisterFeatureUnprojectible();
void testRotateHidePartial();
void testParallelLabelSmallFeature();
void testAdjacentParts();
void testTouchingParts();
void testMergingLinesWithForks();
void testCurvedLabelsWithTinySegments();
void testCurvedLabelCorrectLinePlacement();
void testCurvedLabelNegativeDistance();
void testCurvedLabelOnSmallLineNearCenter();
void testRepeatDistanceWithSmallLine();
void testParallelPlacementPreferAbove();
void testLabelBoundary();
void testLabelBlockingRegion();
void testLabelRotationWithReprojection();
void drawUnplaced();
void labelingResults();
void pointsetExtend();
void curvedOverrun();
void parallelOverrun();
void testDataDefinedLabelAllParts();
void testVerticalOrientation();
void testVerticalOrientationLetterLineSpacing();
void testRotationBasedOrientationPoint();
void testRotationBasedOrientationLine();
void testMapUnitLetterSpacing();
void testMapUnitWordSpacing();
private:
QgsVectorLayer *vl = nullptr;
QString mReport;
void setDefaultLabelParams( QgsPalLayerSettings &settings );
QgsLabelingEngineSettings createLabelEngineSettings();
bool imageCheck( const QString &testName, QImage &image, int mismatchCount );
};
void TestQgsLabelingEngine::initTestCase()
{
mReport += QLatin1String( "<h1>Labeling Engine Tests</h1>\n" );
QgsApplication::init();
QgsApplication::initQgis();
QgsApplication::showSettings();
QgsFontUtils::loadStandardTestFonts( QStringList() << QStringLiteral( "Bold" ) );
}
void TestQgsLabelingEngine::cleanupTestCase()
{
QgsApplication::exitQgis();
QString myReportFile = QDir::tempPath() + "/qgistest.html";
QFile myFile( myReportFile );
if ( myFile.open( QIODevice::WriteOnly | QIODevice::Append ) )
{
QTextStream myQTextStream( &myFile );
myQTextStream << mReport;
myFile.close();
}
}
void TestQgsLabelingEngine::init()
{
QString filename = QStringLiteral( TEST_DATA_DIR ) + "/points.shp";
vl = new QgsVectorLayer( filename, QStringLiteral( "points" ), QStringLiteral( "ogr" ) );
QVERIFY( vl->isValid() );
QgsProject::instance()->addMapLayer( vl );
}
void TestQgsLabelingEngine::cleanup()
{
QgsProject::instance()->removeMapLayer( vl->id() );
vl = nullptr;
}
void TestQgsLabelingEngine::testEngineSettings()
{
// test labeling engine settings
// getters/setters
QgsLabelingEngineSettings settings;
// default for new projects should be placement engine v2
QCOMPARE( settings.placementVersion(), QgsLabelingEngineSettings::PlacementEngineVersion2 );
settings.setDefaultTextRenderFormat( QgsRenderContext::TextFormatAlwaysText );
QCOMPARE( settings.defaultTextRenderFormat(), QgsRenderContext::TextFormatAlwaysText );
settings.setDefaultTextRenderFormat( QgsRenderContext::TextFormatAlwaysOutlines );
QCOMPARE( settings.defaultTextRenderFormat(), QgsRenderContext::TextFormatAlwaysOutlines );
settings.setPlacementVersion( QgsLabelingEngineSettings::PlacementEngineVersion1 );
QCOMPARE( settings.placementVersion(), QgsLabelingEngineSettings::PlacementEngineVersion1 );
settings.setFlag( QgsLabelingEngineSettings::DrawUnplacedLabels, true );
QVERIFY( settings.testFlag( QgsLabelingEngineSettings::DrawUnplacedLabels ) );
settings.setFlag( QgsLabelingEngineSettings::DrawUnplacedLabels, false );
QVERIFY( !settings.testFlag( QgsLabelingEngineSettings::DrawUnplacedLabels ) );
settings.setUnplacedLabelColor( QColor( 0, 255, 0 ) );
QCOMPARE( settings.unplacedLabelColor().name(), QStringLiteral( "#00ff00" ) );
// reading from project
QgsProject p;
settings.setDefaultTextRenderFormat( QgsRenderContext::TextFormatAlwaysText );
settings.setFlag( QgsLabelingEngineSettings::DrawUnplacedLabels, true );
settings.setUnplacedLabelColor( QColor( 0, 255, 0 ) );
settings.setPlacementVersion( QgsLabelingEngineSettings::PlacementEngineVersion1 );
settings.writeSettingsToProject( &p );
QgsLabelingEngineSettings settings2;
settings2.readSettingsFromProject( &p );
QCOMPARE( settings2.defaultTextRenderFormat(), QgsRenderContext::TextFormatAlwaysText );
QVERIFY( settings2.testFlag( QgsLabelingEngineSettings::DrawUnplacedLabels ) );
QCOMPARE( settings2.unplacedLabelColor().name(), QStringLiteral( "#00ff00" ) );
settings.setDefaultTextRenderFormat( QgsRenderContext::TextFormatAlwaysOutlines );
settings.setFlag( QgsLabelingEngineSettings::DrawUnplacedLabels, false );
settings.writeSettingsToProject( &p );
settings2.readSettingsFromProject( &p );
QCOMPARE( settings2.defaultTextRenderFormat(), QgsRenderContext::TextFormatAlwaysOutlines );
QVERIFY( !settings2.testFlag( QgsLabelingEngineSettings::DrawUnplacedLabels ) );
QCOMPARE( settings2.placementVersion(), QgsLabelingEngineSettings::PlacementEngineVersion1 );
// test that older setting is still respected as a fallback
QgsProject p2;
QgsLabelingEngineSettings settings3;
p2.writeEntry( QStringLiteral( "PAL" ), QStringLiteral( "/DrawOutlineLabels" ), false );
settings3.readSettingsFromProject( &p2 );
QCOMPARE( settings3.defaultTextRenderFormat(), QgsRenderContext::TextFormatAlwaysText );
p2.writeEntry( QStringLiteral( "PAL" ), QStringLiteral( "/DrawOutlineLabels" ), true );
settings3.readSettingsFromProject( &p2 );
QCOMPARE( settings3.defaultTextRenderFormat(), QgsRenderContext::TextFormatAlwaysOutlines );
// when opening an older project, labeling engine version should be 1
p2.removeEntry( QStringLiteral( "PAL" ), QStringLiteral( "/PlacementEngineVersion" ) );
settings3.readSettingsFromProject( &p2 );
QCOMPARE( settings3.placementVersion(), QgsLabelingEngineSettings::PlacementEngineVersion1 );
}
void TestQgsLabelingEngine::setDefaultLabelParams( QgsPalLayerSettings &settings )
{
QgsTextFormat format;
format.setFont( QgsFontUtils::getStandardTestFont( QStringLiteral( "Bold" ) ).family() );
format.setSize( 12 );
format.setNamedStyle( QStringLiteral( "Bold" ) );
format.setColor( QColor( 200, 0, 200 ) );
settings.setFormat( format );
}
QgsLabelingEngineSettings TestQgsLabelingEngine::createLabelEngineSettings()
{
QgsLabelingEngineSettings settings;
settings.setPlacementVersion( QgsLabelingEngineSettings::PlacementEngineVersion2 );
return settings;
}
void TestQgsLabelingEngine::testBasic()
{
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
// first render the map and labeling separately
QgsMapRendererSequentialJob job( mapSettings );
job.start();
job.waitForFinished();
QImage img = job.renderedImage();
QPainter p( &img );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
context.setPainter( &p );
QgsPalLayerSettings settings;
settings.fieldName = QStringLiteral( "Class" );
setDefaultLabelParams( settings );
vl->setLabeling( new QgsVectorLayerSimpleLabeling( settings ) ); // TODO: this should not be necessary!
vl->setLabelsEnabled( true );
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( new QgsVectorLayerLabelProvider( vl, QString(), true, &settings ) );
//engine.setFlags( QgsLabelingEngine::RenderOutlineLabels | QgsLabelingEngine::DrawLabelRectOnly );
engine.run( context );
p.end();
QVERIFY( imageCheck( "labeling_basic", img, 20 ) );
// now let's test the variant when integrated into rendering loop
//note the reference images are slightly different due to use of renderer for this test
job.start();
job.waitForFinished();
QImage img2 = job.renderedImage();
vl->setLabeling( nullptr );
QVERIFY( imageCheck( "labeling_basic", img2, 20 ) );
}
void TestQgsLabelingEngine::testDiagrams()
{
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
// first render the map and diagrams separately
QgsMapRendererSequentialJob job( mapSettings );
job.start();
job.waitForFinished();
QImage img = job.renderedImage();
QPainter p( &img );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
context.setPainter( &p );
bool res;
vl->loadNamedStyle( QStringLiteral( TEST_DATA_DIR ) + "/points_diagrams.qml", res );
QVERIFY( res );
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( new QgsVectorLayerDiagramProvider( vl ) );
engine.run( context );
p.end();
QVERIFY( imageCheck( "labeling_point_diagrams", img, 20 ) );
// now let's test the variant when integrated into rendering loop
job.start();
job.waitForFinished();
QImage img2 = job.renderedImage();
vl->loadDefaultStyle( res );
QVERIFY( imageCheck( "labeling_point_diagrams", img2, 20 ) );
}
void TestQgsLabelingEngine::testRuleBased()
{
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
// set up most basic rule-based labeling for layer
QgsRuleBasedLabeling::Rule *root = new QgsRuleBasedLabeling::Rule( nullptr );
QgsPalLayerSettings s1;
s1.fieldName = QStringLiteral( "Class" );
s1.obstacleSettings().setIsObstacle( false );
s1.dist = 2;
QgsTextFormat format = s1.format();
format.setColor( QColor( 200, 0, 200 ) );
format.setFont( QgsFontUtils::getStandardTestFont( QStringLiteral( "Bold" ) ) );
format.setSize( 12 );
s1.setFormat( format );
s1.placement = QgsPalLayerSettings::OverPoint;
s1.quadOffset = QgsPalLayerSettings::QuadrantAboveLeft;
s1.displayAll = true;
root->appendChild( new QgsRuleBasedLabeling::Rule( new QgsPalLayerSettings( s1 ) ) );
QgsPalLayerSettings s2;
s2.fieldName = QStringLiteral( "Class" );
s2.obstacleSettings().setIsObstacle( false );
s2.dist = 2;
format = s2.format();
format.setColor( Qt::red );
format.setFont( QgsFontUtils::getStandardTestFont( QStringLiteral( "Bold" ) ) );
s2.setFormat( format );
s2.placement = QgsPalLayerSettings::OverPoint;
s2.quadOffset = QgsPalLayerSettings::QuadrantBelowRight;
s2.displayAll = true;
s2.dataDefinedProperties().setProperty( QgsPalLayerSettings::Size, QgsProperty::fromValue( QStringLiteral( "18" ) ) );
root->appendChild( new QgsRuleBasedLabeling::Rule( new QgsPalLayerSettings( s2 ), 0, 0, QStringLiteral( "Class = 'Jet'" ) ) );
vl->setLabeling( new QgsRuleBasedLabeling( root ) );
vl->setLabelsEnabled( true );
//setDefaultLabelParams( vl );
QgsMapRendererSequentialJob job( mapSettings );
job.start();
job.waitForFinished();
QImage img = job.renderedImage();
QVERIFY( imageCheck( "labeling_rulebased", img, 20 ) );
// test read/write rules
QDomDocument doc, doc2, doc3;
QDomElement e = vl->labeling()->save( doc, QgsReadWriteContext() );
doc.appendChild( e );
// read saved rules
doc2.setContent( doc.toString() );
QDomElement e2 = doc2.documentElement();
QgsRuleBasedLabeling *rl2 = QgsRuleBasedLabeling::create( e2, QgsReadWriteContext() );
QVERIFY( rl2 );
// check that another save will keep the data the same
QDomElement e3 = rl2->save( doc3, QgsReadWriteContext() );
doc3.appendChild( e3 );
QCOMPARE( doc.toString(), doc3.toString() );
vl->setLabeling( nullptr );
delete rl2;
#if 0
QPainter p( &img );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
context.setPainter( &p );
QgsLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( new QgsRuleBasedLabelProvider(, vl ) );
engine.run( context );
#endif
}
void TestQgsLabelingEngine::zOrder()
{
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
QgsMapRendererSequentialJob job( mapSettings );
job.start();
job.waitForFinished();
QImage img = job.renderedImage();
QPainter p( &img );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
context.setPainter( &p );
QgsPalLayerSettings pls1;
pls1.fieldName = QStringLiteral( "Class" );
pls1.placement = QgsPalLayerSettings::OverPoint;
pls1.quadOffset = QgsPalLayerSettings::QuadrantAboveRight;
pls1.displayAll = true;
QgsTextFormat format = pls1.format();
format.setFont( QgsFontUtils::getStandardTestFont( QStringLiteral( "Bold" ) ) );
format.setSize( 70 );
pls1.setFormat( format );
//use data defined coloring and font size so that stacking order of labels can be determined
pls1.dataDefinedProperties().setProperty( QgsPalLayerSettings::Color, QgsProperty::fromExpression( QStringLiteral( "case when \"Class\"='Jet' then '#ff5500' when \"Class\"='B52' then '#00ffff' else '#ff00ff' end" ) ) );
pls1.dataDefinedProperties().setProperty( QgsPalLayerSettings::Size, QgsProperty::fromExpression( QStringLiteral( "case when \"Class\"='Jet' then 100 when \"Class\"='B52' then 30 else 50 end" ) ) );
QgsVectorLayerLabelProvider *provider1 = new QgsVectorLayerLabelProvider( vl, QString(), true, &pls1 );
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( provider1 );
//engine.setFlags( QgsLabelingEngine::RenderOutlineLabels | QgsLabelingEngine::DrawLabelRectOnly );
engine.run( context );
p.end();
engine.removeProvider( provider1 );
// since labels are all from same layer and have same z-index then smaller labels should be stacked on top of larger
// labels. For example: B52 > Biplane > Jet
QVERIFY( imageCheck( "label_order_size", img, 20 ) );
img = job.renderedImage();
//test data defined z-index
pls1.dataDefinedProperties().setProperty( QgsPalLayerSettings::ZIndex, QgsProperty::fromExpression( QStringLiteral( "case when \"Class\"='Jet' then 3 when \"Class\"='B52' then 1 else 2 end" ) ) );
provider1 = new QgsVectorLayerLabelProvider( vl, QString(), true, &pls1 );
engine.addProvider( provider1 );
p.begin( &img );
engine.run( context );
p.end();
engine.removeProvider( provider1 );
// z-index will take preference over label size, so labels should be stacked Jet > Biplane > B52
QVERIFY( imageCheck( "label_order_zindex", img, 20 ) );
img = job.renderedImage();
pls1.dataDefinedProperties().clear();
format = pls1.format();
format.setColor( QColor( 255, 50, 100 ) );
format.setSize( 30 );
pls1.setFormat( format );
provider1 = new QgsVectorLayerLabelProvider( vl, QString(), true, &pls1 );
engine.addProvider( provider1 );
//add a second layer
QString filename = QStringLiteral( TEST_DATA_DIR ) + "/points.shp";
QgsVectorLayer *vl2 = new QgsVectorLayer( filename, QStringLiteral( "points" ), QStringLiteral( "ogr" ) );
QVERIFY( vl2->isValid() );
QgsProject::instance()->addMapLayer( vl2 );
QgsPalLayerSettings pls2( pls1 );
format = pls2.format();
format.setColor( QColor( 0, 0, 0 ) );
pls2.setFormat( format );
QgsVectorLayerLabelProvider *provider2 = new QgsVectorLayerLabelProvider( vl2, QString(), true, &pls2 );
engine.addProvider( provider2 );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl << vl2 );
engine.setMapSettings( mapSettings );
p.begin( &img );
engine.run( context );
p.end();
// labels have same z-index, so layer order will be used
QVERIFY( imageCheck( "label_order_layer1", img, 20 ) );
img = job.renderedImage();
//flip layer order and re-test
mapSettings.setLayers( QList<QgsMapLayer *>() << vl2 << vl );
engine.setMapSettings( mapSettings );
p.begin( &img );
engine.run( context );
p.end();
// label order should be reversed
QVERIFY( imageCheck( "label_order_layer2", img, 20 ) );
img = job.renderedImage();
//try mixing layer order and z-index
engine.removeProvider( provider1 );
pls1.dataDefinedProperties().setProperty( QgsPalLayerSettings::ZIndex, QgsProperty::fromExpression( QStringLiteral( "if(\"Class\"='Jet',3,0)" ) ) );
provider1 = new QgsVectorLayerLabelProvider( vl, QString(), true, &pls1 );
engine.addProvider( provider1 );
p.begin( &img );
engine.run( context );
p.end();
// label order should be most labels from layer 1, then labels from layer 2, then "Jet"s from layer 1
QVERIFY( imageCheck( "label_order_mixed", img, 20 ) );
img = job.renderedImage();
//cleanup
QgsProject::instance()->removeMapLayer( vl2 );
}
void TestQgsLabelingEngine::testEncodeDecodePositionOrder()
{
//create an ordered position list
QVector< QgsPalLayerSettings::PredefinedPointPosition > original;
//make sure all placements are added here
original << QgsPalLayerSettings::BottomLeft << QgsPalLayerSettings::BottomSlightlyLeft
<< QgsPalLayerSettings::BottomMiddle << QgsPalLayerSettings::BottomSlightlyRight
<< QgsPalLayerSettings::BottomRight << QgsPalLayerSettings::MiddleRight
<< QgsPalLayerSettings::MiddleLeft << QgsPalLayerSettings::TopLeft
<< QgsPalLayerSettings::TopSlightlyLeft << QgsPalLayerSettings::TopMiddle
<< QgsPalLayerSettings::TopSlightlyRight << QgsPalLayerSettings::TopRight;
//encode list
QString encoded = QgsLabelingUtils::encodePredefinedPositionOrder( original );
QVERIFY( !encoded.isEmpty() );
//decode
QVector< QgsPalLayerSettings::PredefinedPointPosition > decoded = QgsLabelingUtils::decodePredefinedPositionOrder( encoded );
QCOMPARE( decoded, original );
//test decoding with a messy string
decoded = QgsLabelingUtils::decodePredefinedPositionOrder( QStringLiteral( ",tr,x,BSR, L, t,," ) );
QVector< QgsPalLayerSettings::PredefinedPointPosition > expected;
expected << QgsPalLayerSettings::TopRight << QgsPalLayerSettings::BottomSlightlyRight
<< QgsPalLayerSettings::MiddleLeft << QgsPalLayerSettings::TopMiddle;
QCOMPARE( decoded, expected );
}
void TestQgsLabelingEngine::testEncodeDecodeLinePlacement()
{
QString encoded = QgsLabelingUtils::encodeLinePlacementFlags( QgsLabeling::LinePlacementFlag::AboveLine | QgsLabeling::LinePlacementFlag::OnLine );
QVERIFY( !encoded.isEmpty() );
QCOMPARE( QgsLabelingUtils::decodeLinePlacementFlags( encoded ), QgsLabeling::LinePlacementFlag::AboveLine | QgsLabeling::LinePlacementFlag::OnLine );
encoded = QgsLabelingUtils::encodeLinePlacementFlags( QgsLabeling::LinePlacementFlag::OnLine | QgsLabeling::LinePlacementFlag::MapOrientation );
QVERIFY( !encoded.isEmpty() );
QCOMPARE( QgsLabelingUtils::decodeLinePlacementFlags( encoded ), QgsLabeling::LinePlacementFlag::OnLine | QgsLabeling::LinePlacementFlag::MapOrientation );
//test decoding with a messy string
QCOMPARE( QgsLabelingUtils::decodeLinePlacementFlags( QStringLiteral( ",ol,," ) ), QgsLabeling::LinePlacementFlag::OnLine | QgsLabeling::LinePlacementFlag::MapOrientation );
QCOMPARE( QgsLabelingUtils::decodeLinePlacementFlags( QStringLiteral( ",ol,BL, al" ) ), QgsLabeling::LinePlacementFlag::OnLine | QgsLabeling::LinePlacementFlag::AboveLine | QgsLabeling::LinePlacementFlag::BelowLine | QgsLabeling::LinePlacementFlag::MapOrientation );
QCOMPARE( QgsLabelingUtils::decodeLinePlacementFlags( QStringLiteral( ",ol,BL, LO, al" ) ), QgsLabeling::LinePlacementFlag::OnLine | QgsLabeling::LinePlacementFlag::AboveLine | QgsLabeling::LinePlacementFlag::BelowLine );
}
void TestQgsLabelingEngine::testSubstitutions()
{
QgsPalLayerSettings settings;
settings.useSubstitutions = false;
QgsStringReplacementCollection collection( QList< QgsStringReplacement >() << QgsStringReplacement( QStringLiteral( "aa" ), QStringLiteral( "bb" ) ) );
settings.substitutions = collection;
settings.fieldName = QStringLiteral( "'aa label'" );
settings.isExpression = true;
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
QgsFeature f( vl->fields(), 1 );
f.setGeometry( QgsGeometry::fromPointXY( QgsPointXY( -100, 30 ) ) );
// make a fake render context
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
QSet<QString> attributes;
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( provider );
provider->prepare( context, attributes );
provider->registerFeature( f, context );
QCOMPARE( provider->mLabels.at( 0 )->labelText(), QString( "aa label" ) );
//with substitution
settings.useSubstitutions = true;
QgsVectorLayerLabelProvider *provider2 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test2" ), true, &settings );
engine.addProvider( provider2 );
provider2->prepare( context, attributes );
provider2->registerFeature( f, context );
QCOMPARE( provider2->mLabels.at( 0 )->labelText(), QString( "bb label" ) );
}
void TestQgsLabelingEngine::testCapitalization()
{
QgsFeature f( vl->fields(), 1 );
f.setGeometry( QgsGeometry::fromPointXY( QgsPointXY( -100, 30 ) ) );
// make a fake render context
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
QSet<QString> attributes;
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
// no change
QgsPalLayerSettings settings;
QgsTextFormat format = settings.format();
QFont font = format.font();
font.setCapitalization( QFont::MixedCase );
format.setFont( font );
settings.setFormat( format );
settings.fieldName = QStringLiteral( "'a teSt LABEL'" );
settings.isExpression = true;
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider );
provider->prepare( context, attributes );
provider->registerFeature( f, context );
QCOMPARE( provider->mLabels.at( 0 )->labelText(), QString( "a teSt LABEL" ) );
//uppercase
font.setCapitalization( QFont::AllUppercase );
format.setFont( font );
settings.setFormat( format );
QgsVectorLayerLabelProvider *provider2 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test2" ), true, &settings );
engine.addProvider( provider2 );
provider2->prepare( context, attributes );
provider2->registerFeature( f, context );
QCOMPARE( provider2->mLabels.at( 0 )->labelText(), QString( "A TEST LABEL" ) );
//lowercase
font.setCapitalization( QFont::AllLowercase );
format.setFont( font );
settings.setFormat( format );
QgsVectorLayerLabelProvider *provider3 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test3" ), true, &settings );
engine.addProvider( provider3 );
provider3->prepare( context, attributes );
provider3->registerFeature( f, context );
QCOMPARE( provider3->mLabels.at( 0 )->labelText(), QString( "a test label" ) );
//first letter uppercase
font.setCapitalization( QFont::Capitalize );
format.setFont( font );
settings.setFormat( format );
QgsVectorLayerLabelProvider *provider4 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test4" ), true, &settings );
engine.addProvider( provider4 );
provider4->prepare( context, attributes );
provider4->registerFeature( f, context );
QCOMPARE( provider4->mLabels.at( 0 )->labelText(), QString( "A TeSt LABEL" ) );
}
void TestQgsLabelingEngine::testNumberFormat()
{
QgsFeature f( vl->fields(), 1 );
f.setGeometry( QgsGeometry::fromPointXY( QgsPointXY( -100, 30 ) ) );
// make a fake render context
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl );
mapSettings.setOutputDpi( 96 );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
QSet<QString> attributes;
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
// no change
QgsPalLayerSettings settings;
settings.fieldName = QStringLiteral( "110.112" );
settings.isExpression = true;
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider );
provider->prepare( context, attributes );
provider->registerFeature( f, context );
QCOMPARE( provider->mLabels.at( 0 )->labelText(), QStringLiteral( "110.112" ) );
settings.fieldName = QStringLiteral( "-110.112" );
QgsVectorLayerLabelProvider *provider2 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider2 );
provider2->prepare( context, attributes );
provider2->registerFeature( f, context );
QCOMPARE( provider2->mLabels.at( 0 )->labelText(), QStringLiteral( "-110.112" ) );
settings.fieldName = QStringLiteral( "110.112" );
settings.formatNumbers = true;
settings.decimals = 6;
QgsVectorLayerLabelProvider *provider3 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider3 );
provider3->prepare( context, attributes );
provider3->registerFeature( f, context );
QCOMPARE( provider3->mLabels.at( 0 )->labelText(), QStringLiteral( "110.112000" ) );
settings.fieldName = QStringLiteral( "-110.112" );
QgsVectorLayerLabelProvider *provider4 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider4 );
provider4->prepare( context, attributes );
provider4->registerFeature( f, context );
QCOMPARE( provider4->mLabels.at( 0 )->labelText(), QStringLiteral( "-110.112000" ) );
settings.fieldName = QStringLiteral( "110.112" );
settings.formatNumbers = true;
settings.plusSign = true;
QgsVectorLayerLabelProvider *provider5 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider5 );
provider5->prepare( context, attributes );
provider5->registerFeature( f, context );
QCOMPARE( provider5->mLabels.at( 0 )->labelText(), QStringLiteral( "+110.112000" ) );
settings.fieldName = QStringLiteral( "-110.112" );
QgsVectorLayerLabelProvider *provider6 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider6 );
provider6->prepare( context, attributes );
provider6->registerFeature( f, context );
QCOMPARE( provider6->mLabels.at( 0 )->labelText(), QStringLiteral( "-110.112000" ) );
settings.formatNumbers = false;
settings.fieldName = QStringLiteral( "110.112" );
QgsVectorLayerLabelProvider *provider7 = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings );
engine.addProvider( provider7 );
provider7->prepare( context, attributes );
provider7->registerFeature( f, context );
QCOMPARE( provider7->mLabels.at( 0 )->labelText(), QStringLiteral( "110.112" ) );
}
void TestQgsLabelingEngine::testParticipatingLayers()
{
QgsDefaultLabelingEngine engine;
QVERIFY( engine.participatingLayers().isEmpty() );
QgsPalLayerSettings settings1;
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl, QStringLiteral( "test" ), true, &settings1 );
engine.addProvider( provider );
QCOMPARE( engine.participatingLayers(), QList<QgsMapLayer *>() << vl );
QgsVectorLayer *layer2 = new QgsVectorLayer( QStringLiteral( "Point?field=col1:integer" ), QStringLiteral( "layer2" ), QStringLiteral( "memory" ) );
QgsPalLayerSettings settings2;
QgsVectorLayerLabelProvider *provider2 = new QgsVectorLayerLabelProvider( layer2, QStringLiteral( "test2" ), true, &settings2 );
engine.addProvider( provider2 );
QCOMPARE( engine.participatingLayers().toSet(), QSet< QgsMapLayer * >() << vl << layer2 );
// add a rule-based labeling node
QgsRuleBasedLabeling::Rule *root = new QgsRuleBasedLabeling::Rule( nullptr );
QgsPalLayerSettings s1;
root->appendChild( new QgsRuleBasedLabeling::Rule( new QgsPalLayerSettings( s1 ) ) );
QgsPalLayerSettings s2;
root->appendChild( new QgsRuleBasedLabeling::Rule( new QgsPalLayerSettings( s2 ) ) );
QgsVectorLayer *layer3 = new QgsVectorLayer( QStringLiteral( "Point?field=col1:integer" ), QStringLiteral( "layer3" ), QStringLiteral( "memory" ) );
QgsRuleBasedLabelProvider *ruleProvider = new QgsRuleBasedLabelProvider( QgsRuleBasedLabeling( root ), layer3 );
engine.addProvider( ruleProvider );
QCOMPARE( engine.participatingLayers().toSet(), QSet< QgsMapLayer * >() << vl << layer2 << layer3 );
}
bool TestQgsLabelingEngine::imageCheck( const QString &testName, QImage &image, int mismatchCount )
{
//draw background
QImage imageWithBackground( image.width(), image.height(), QImage::Format_RGB32 );
QgsMultiRenderChecker::drawBackground( &imageWithBackground );
QPainter painter( &imageWithBackground );
painter.drawImage( 0, 0, image );
painter.end();
mReport += "<h2>" + testName + "</h2>\n";
QString tempDir = QDir::tempPath() + '/';
QString fileName = tempDir + testName + ".png";
imageWithBackground.save( fileName, "PNG" );
QgsMultiRenderChecker checker;
checker.setControlPathPrefix( QStringLiteral( "labelingengine" ) );
checker.setControlName( "expected_" + testName );
checker.setRenderedImage( fileName );
checker.setColorTolerance( 2 );
bool resultFlag = checker.runTest( testName, mismatchCount );
mReport += checker.report();
return resultFlag;
}
// See https://github.com/qgis/QGIS/issues/23431
void TestQgsLabelingEngine::testRegisterFeatureUnprojectible()
{
QgsPalLayerSettings settings;
settings.fieldName = QStringLiteral( "'aa label'" );
settings.isExpression = true;
settings.fitInPolygonOnly = true;
std::unique_ptr< QgsVectorLayer> vl2( new QgsVectorLayer( QStringLiteral( "polygon?crs=epsg:4326&field=id:integer" ), QStringLiteral( "vl" ), QStringLiteral( "memory" ) ) );
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl2.get(), QStringLiteral( "test" ), true, &settings );
QgsFeature f( vl2->fields(), 1 );
QString wkt1 = QStringLiteral( "POLYGON((0 0,8 0,8 -90,0 0))" );
f.setGeometry( QgsGeometry().fromWkt( wkt1 ) );
// make a fake render context
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
QgsCoordinateReferenceSystem tgtCrs;
tgtCrs.createFromString( QStringLiteral( "EPSG:3857" ) );
mapSettings.setDestinationCrs( tgtCrs );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl2->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl2.get() );
mapSettings.setOutputDpi( 96 );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
QSet<QString> attributes;
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( provider );
provider->prepare( context, attributes );
provider->registerFeature( f, context );
QCOMPARE( provider->mLabels.size(), 0 );
}
void TestQgsLabelingEngine::testRotateHidePartial()
{
QgsPalLayerSettings settings;
setDefaultLabelParams( settings );
QgsTextFormat format = settings.format();
format.setSize( 20 );
format.setColor( QColor( 0, 0, 0 ) );
settings.setFormat( format );
settings.fieldName = QStringLiteral( "'label'" );
settings.isExpression = true;
settings.placement = QgsPalLayerSettings::OverPoint;
std::unique_ptr< QgsVectorLayer> vl2( new QgsVectorLayer( QStringLiteral( "polygon?crs=epsg:4326&field=id:integer" ), QStringLiteral( "vl" ), QStringLiteral( "memory" ) ) );
vl2->setRenderer( new QgsNullSymbolRenderer() );
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl2.get(), QStringLiteral( "test" ), true, &settings );
QgsFeature f( vl2->fields(), 1 );
f.setGeometry( QgsGeometry().fromWkt( QStringLiteral( "POLYGON((0 0,8 0,8 8,0 8,0 0))" ) ) );
vl2->dataProvider()->addFeature( f );
f.setGeometry( QgsGeometry().fromWkt( QStringLiteral( "POLYGON((20 20,28 20,28 28,20 28,20 20))" ) ) );
vl2->dataProvider()->addFeature( f );
f.setGeometry( QgsGeometry().fromWkt( QStringLiteral( "POLYGON((0 20,8 20,8 28,0 28,0 20))" ) ) );
vl2->dataProvider()->addFeature( f );
vl2->setLabeling( new QgsVectorLayerSimpleLabeling( settings ) ); // TODO: this should not be necessary!
vl2->setLabelsEnabled( true );
// make a fake render context
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
QgsCoordinateReferenceSystem tgtCrs;
tgtCrs.createFromString( QStringLiteral( "EPSG:4326" ) );
mapSettings.setDestinationCrs( tgtCrs );
mapSettings.setOutputSize( size );
mapSettings.setExtent( vl2->extent() );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl2.get() );
mapSettings.setOutputDpi( 96 );
mapSettings.setRotation( 45 );
QgsLabelingEngineSettings engineSettings = mapSettings.labelingEngineSettings();
engineSettings.setFlag( QgsLabelingEngineSettings::UsePartialCandidates, false );
engineSettings.setFlag( QgsLabelingEngineSettings::DrawLabelRectOnly, true );
mapSettings.setLabelingEngineSettings( engineSettings );
QgsMapRendererSequentialJob job( mapSettings );
job.start();
job.waitForFinished();
QImage img = job.renderedImage();
QPainter p( &img );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
context.setPainter( &p );
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( provider );
engine.run( context );
p.end();
engine.removeProvider( provider );
QVERIFY( imageCheck( "label_rotate_hide_partial", img, 20 ) );
}
void TestQgsLabelingEngine::testParallelLabelSmallFeature()
{
// Test rendering a small, closed linestring using parallel labeling
// This test assumes that NO label is drawn in this situation. In future we may want
// to revisit this and e.g. draw a centered horizontal label over the feature -- in which
// case the reference image here should be freely revised. But for now, we just don't
// want a hang/crash such as described in https://github.com/qgis/QGIS/issues/26174
QgsPalLayerSettings settings;
setDefaultLabelParams( settings );
QgsTextFormat format = settings.format();
format.setSize( 20 );
format.setColor( QColor( 0, 0, 0 ) );
settings.setFormat( format );
settings.fieldName = QStringLiteral( "'long label which doesn\\'t fit'" );
settings.isExpression = true;
settings.placement = QgsPalLayerSettings::Line;
std::unique_ptr< QgsVectorLayer> vl2( new QgsVectorLayer( QStringLiteral( "linestring?crs=epsg:3148&field=id:integer" ), QStringLiteral( "vl" ), QStringLiteral( "memory" ) ) );
vl2->setRenderer( new QgsNullSymbolRenderer() );
QgsVectorLayerLabelProvider *provider = new QgsVectorLayerLabelProvider( vl2.get(), QStringLiteral( "test" ), true, &settings );
QgsFeature f( vl2->fields(), 1 );
f.setGeometry( QgsGeometry().fromWkt( QStringLiteral( "MultiLineString ((491176.796876200591214 1277565.39028006233274937, 491172.03128372476203367 1277562.45040752924978733, 491167.67935446038609371 1277557.28786265244707465, 491165.36599104333436117 1277550.97473702346906066, 491165.35308923490811139 1277544.24074512091465294, 491166.8345245998352766 1277539.49665334494784474, 491169.47186020453227684 1277535.27191955596208572, 491173.11253597546601668 1277531.85408334922976792, 491179.02124191814800724 1277528.94421873707324266, 491185.57387020520400256 1277528.15719766705296934, 491192.01811734877992421 1277529.57064539520069957, 491197.62341773137450218 1277533.02997340611182153, 491201.74636711279163137 1277538.15941766835749149, 491203.92884904221864417 1277544.35095247370190918, 491203.9633954341406934 1277550.5652371181640774, 491202.02436481812037528 1277556.4815535971429199, 491198.296930403157603 1277561.48062952468171716, 491193.17346247035311535 1277565.0647635399363935, 491187.82046439842088148 1277566.747082503978163, 491182.21622701874002814 1277566.85931688314303756, 491176.796876200591214 1277565.39028006233274937))" ) ) );
vl2->dataProvider()->addFeature( f );
vl2->setLabeling( new QgsVectorLayerSimpleLabeling( settings ) ); // TODO: this should not be necessary!
vl2->setLabelsEnabled( true );
// make a fake render context
QSize size( 640, 480 );
QgsMapSettings mapSettings;
mapSettings.setLabelingEngineSettings( createLabelEngineSettings() );
QgsCoordinateReferenceSystem tgtCrs;
tgtCrs.createFromString( QStringLiteral( "EPSG:3148" ) );
mapSettings.setDestinationCrs( tgtCrs );
mapSettings.setOutputSize( size );
mapSettings.setExtent( QgsRectangle( 490359.7, 1276862.1, 492587.8, 1278500.0 ) );
mapSettings.setLayers( QList<QgsMapLayer *>() << vl2.get() );
mapSettings.setOutputDpi( 96 );
QgsLabelingEngineSettings engineSettings = mapSettings.labelingEngineSettings();
engineSettings.setFlag( QgsLabelingEngineSettings::UsePartialCandidates, false );
engineSettings.setFlag( QgsLabelingEngineSettings::DrawLabelRectOnly, true );
mapSettings.setLabelingEngineSettings( engineSettings );
QgsMapRendererSequentialJob job( mapSettings );
job.start();
job.waitForFinished();
QImage img = job.renderedImage();
QPainter p( &img );
QgsRenderContext context = QgsRenderContext::fromMapSettings( mapSettings );
context.setPainter( &p );
QgsDefaultLabelingEngine engine;
engine.setMapSettings( mapSettings );
engine.addProvider( provider );
engine.run( context );
p.end();
engine.removeProvider( provider );
// no need to actually check the result here -- we were just testing that no hang/crash occurred
// QVERIFY( imageCheck( "label_rotate_hide_partial", img, 20 ) );
}
void TestQgsLabelingEngine::testAdjacentParts()
{
// test polygon layer with multipart feature with adjacent parts
QgsPalLayerSettings settings;
setDefaultLabelParams( settings );
QgsTextFormat format = settings.format();
format.setSize( 20 );
format.setColor( QColor( 0, 0, 0 ) );
settings.setFormat( format );
settings.fieldName = QStringLiteral( "'X'" );
settings.isExpression = true;
settings.placement = QgsPalLayerSettings::OverPoint;
settings.labelPerPart = true;
std::unique_ptr< QgsVectorLayer> vl2( new QgsVectorLayer( QStringLiteral( "Polygon?crs=epsg:3946&field=id:integer" ), QStringLiteral( "vl" ), QStringLiteral( "memory" ) ) );
vl2->setRenderer( new QgsNullSymbolRenderer() );
QgsFeature f;
f.setAttributes( QgsAttributes() << 1 );
f.setGeometry( QgsGeometry::fromWkt( QStringLiteral( "MultiPolygon (((1967901.6872910603415221 5162590.11975561361759901, 1967905.31832842249423265 5162591.80023225769400597, 1967907.63076798897236586 5162586.43503414187580347, 1967903.84105980419553816 5162584.57283254805952311, 1967901.6872910603415221 5162590.11975561361759901)),((1967901.64785283687524498 5162598.3270823871716857, 1967904.82891705213114619 5162601.06552503909915686, 1967910.82140435534529388 5162587.99774718284606934, 1967907.63076798897236586 5162586.43503414187580347, 1967905.31832842249423265 5162591.80023225769400597, 1967901.6872910603415221 5162590.11975561361759901, 1967899.27472299290820956 5162596.28855143301188946, 1967901.64785283687524498 5162598.3270823871716857)),((1967904.82891705213114619 5162601.06552503909915686, 1967901.64785283687524498 5162598.3270823871716857, 1967884.28552994946949184 5162626.09785370342433453, 1967895.81538487318903208 5162633.84423183929175138, 1967901.64141261484473944 5162624.63927845563739538, 1967906.47453573765233159 5162616.87410452589392662, 1967913.7844126324634999 5162604.47178338281810284, 1967909.58057221467606723 5162602.89022256527096033, 1967904.82891705213114619 5162601.06552503909915686)))" ) ) );
QVERIFY( vl2->dataProvider()->addFeature( f ) );
vl2->setLabeling( new QgsVectorLayerSimpleLabeling( settings ) ); // TODO: this should not be necessary!
vl2->setLabelsEnabled( true );
// make a fake render context
QSize size( 640, 480 );