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nyalldawsonnyalldawson
committedJun 3, 2019
Add some unit tests for labeling results
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ltr-3_40final-3_8_0
1 parent 357328a commit 70a07f9

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‎tests/src/core/testqgslabelingengine.cpp

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@@ -61,6 +61,7 @@ class TestQgsLabelingEngine : public QObject
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void testLabelBoundary();
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void testLabelBlockingRegion();
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void testLabelRotationWithReprojection();
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void labelingResults();
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private:
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QgsVectorLayer *vl = nullptr;
@@ -1366,5 +1367,110 @@ void TestQgsLabelingEngine::testLabelRotationWithReprojection()
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QVERIFY( imageCheck( QStringLiteral( "label_rotate_with_reproject" ), img, 20 ) );
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}
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void TestQgsLabelingEngine::labelingResults()
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{
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// test retrieval of labeling results
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QgsPalLayerSettings settings;
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setDefaultLabelParams( settings );
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QgsTextFormat format = settings.format();
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format.setSize( 20 );
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format.setColor( QColor( 0, 0, 0 ) );
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settings.setFormat( format );
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settings.fieldName = QStringLiteral( "\"id\"" );
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settings.isExpression = true;
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settings.placement = QgsPalLayerSettings::OverPoint;
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std::unique_ptr< QgsVectorLayer> vl2( new QgsVectorLayer( QStringLiteral( "Point?crs=epsg:4326&field=id:integer" ), QStringLiteral( "vl" ), QStringLiteral( "memory" ) ) );
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vl2->setRenderer( new QgsNullSymbolRenderer() );
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QgsFeature f;
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f.setAttributes( QgsAttributes() << 1 );
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f.setGeometry( QgsGeometry::fromPointXY( QgsPointXY( -6.250851540391068, 53.335006994584944 ) ) );
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QVERIFY( vl2->dataProvider()->addFeature( f ) );
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f.setAttributes( QgsAttributes() << 8888 );
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f.setGeometry( QgsGeometry::fromPointXY( QgsPointXY( -21.950014487179544, 64.150023619739216 ) ) );
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QVERIFY( vl2->dataProvider()->addFeature( f ) );
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f.setAttributes( QgsAttributes() << 33333 );
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f.setGeometry( QgsGeometry::fromPointXY( QgsPointXY( -0.118667702475932, 51.5019405883275 ) ) );
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QVERIFY( vl2->dataProvider()->addFeature( f ) );
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vl2->updateExtents();
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vl2->setLabeling( new QgsVectorLayerSimpleLabeling( settings ) ); // TODO: this should not be necessary!
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vl2->setLabelsEnabled( true );
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// make a fake render context
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QSize size( 640, 480 );
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QgsMapSettings mapSettings;
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QgsCoordinateReferenceSystem tgtCrs( QStringLiteral( "EPSG:3857" ) );
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mapSettings.setDestinationCrs( tgtCrs );
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mapSettings.setOutputSize( size );
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mapSettings.setExtent( QgsRectangle( -4137976.6, 6557092.6, 1585557.4, 9656515.0 ) );
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// mapSettings.setRotation( 60 );
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mapSettings.setLayers( QList<QgsMapLayer *>() << vl2.get() );
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mapSettings.setOutputDpi( 96 );
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QgsLabelingEngineSettings engineSettings = mapSettings.labelingEngineSettings();
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engineSettings.setFlag( QgsLabelingEngineSettings::UsePartialCandidates, false );
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engineSettings.setFlag( QgsLabelingEngineSettings::DrawLabelRectOnly, true );
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//engineSettings.setFlag( QgsLabelingEngineSettings::DrawCandidates, true );
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mapSettings.setLabelingEngineSettings( engineSettings );
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QgsMapRendererSequentialJob job( mapSettings );
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job.start();
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job.waitForFinished();
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std::unique_ptr< QgsLabelingResults > results( job.takeLabelingResults() );
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QVERIFY( results );
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// retrieve some labels
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QList<QgsLabelPosition> labels = results->labelsAtPosition( QgsPointXY( -654732, 7003282 ) );
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QCOMPARE( labels.count(), 1 );
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QCOMPARE( labels.at( 0 ).featureId, 1 );
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QCOMPARE( labels.at( 0 ).labelText, QStringLiteral( "1" ) );
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QGSCOMPARENEAR( labels.at( 0 ).width, 167961, 500 ); // tolerance will probably need tweaking, to account for cross-platform font diffs
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QGSCOMPARENEAR( labels.at( 0 ).height, 295119, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.xMinimum(), -779822, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.xMaximum(), -611861, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.yMinimum(), 6897647, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.yMaximum(), 7192767, 500 );
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QCOMPARE( labels.at( 0 ).rotation, 0 );
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labels = results->labelsAtPosition( QgsPointXY( -769822, 6927647 ) );
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QCOMPARE( labels.count(), 1 );
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QCOMPARE( labels.at( 0 ).featureId, 1 );
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labels = results->labelsAtPosition( QgsPointXY( -615861, 7132767 ) );
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QCOMPARE( labels.count(), 1 );
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QCOMPARE( labels.at( 0 ).featureId, 1 );
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labels = results->labelsAtPosition( QgsPointXY( -2463392, 9361711 ) );
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QCOMPARE( labels.count(), 1 );
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QCOMPARE( labels.at( 0 ).featureId, 2 );
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QCOMPARE( labels.at( 0 ).labelText, QStringLiteral( "8888" ) );
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QGSCOMPARENEAR( labels.at( 0 ).width, 671844, 500 ); // tolerance will probably need tweaking, to account for cross-platform font diffs
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QGSCOMPARENEAR( labels.at( 0 ).height, 295119, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.xMinimum(), -2779386, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.xMaximum(), -2107542, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.yMinimum(), 9240403, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.yMaximum(), 9535523, 500 );
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QCOMPARE( labels.at( 0 ).rotation, 0 );
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labels = results->labelsAtPosition( QgsPointXY( -1383, 6708478 ) );
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QCOMPARE( labels.count(), 1 );
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QCOMPARE( labels.at( 0 ).featureId, 3 );
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QCOMPARE( labels.at( 0 ).labelText, QStringLiteral( "33333" ) );
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QGSCOMPARENEAR( labels.at( 0 ).width, 839805, 500 ); // tolerance will probably need tweaking, to account for cross-platform font diffs
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QGSCOMPARENEAR( labels.at( 0 ).height, 295119, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.xMinimum(), -433112, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.xMaximum(), 406692, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.yMinimum(), 6563006, 500 );
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QGSCOMPARENEAR( labels.at( 0 ).labelRect.yMaximum(), 6858125, 500 );
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QCOMPARE( labels.at( 0 ).rotation, 0 );
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labels = results->labelsAtPosition( QgsPointXY( -2463392, 6708478 ) );
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QCOMPARE( labels.count(), 0 );
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}
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QGSTEST_MAIN( TestQgsLabelingEngine )
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#include "testqgslabelingengine.moc"

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