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9cd3ef02ac
I have got caught by the default set to WGS 84 when I loaded a layer in projected CRS, set extent to layer's extent and... nothing got rendered because map renderer was reprojecting to WGS 84. This default is closer to the default in 2.x where reprojection is turned off.
286 lines
8.7 KiB
C++
286 lines
8.7 KiB
C++
/***************************************************************************
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testqgsmapsettings.cpp
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--------------------------------------
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Date : Tue 6 Feb 2015
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Copyright : (C) 2014 by Sandro Santilli
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Email : strk@keybit.net
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgstest.h"
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#include <QObject>
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#include <QString>
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#include <math.h>
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//header for class being tested
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#include "qgsexpression.h"
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#include "qgsexpressioncontext.h"
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#include "qgsrectangle.h"
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#include "qgsmapsettings.h"
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#include "qgspointxy.h"
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#include "qgslogger.h"
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#include "qgsapplication.h"
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#include "qgsmaplayerlistutils.h"
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#include "qgsvectorlayer.h"
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class TestQgsMapSettings: public QObject
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{
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Q_OBJECT
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private slots:
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void initTestCase();
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void cleanupTestCase();
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void testDefaults();
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void visibleExtent();
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void mapUnitsPerPixel();
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void visiblePolygon();
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void testIsLayerVisible();
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void testMapLayerListUtils();
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void testXmlReadWrite();
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private:
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QString toString( const QPolygonF &p, int decimalPlaces = 2 ) const;
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};
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void TestQgsMapSettings::initTestCase()
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{
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QgsApplication::init();
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QgsApplication::initQgis();
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QgsApplication::showSettings();
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}
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void TestQgsMapSettings::cleanupTestCase()
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{
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QgsApplication::exitQgis();
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}
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QString TestQgsMapSettings::toString( const QPolygonF &p, int dec ) const
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{
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QString s;
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const char *sep = "";
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double r = pow( 10.0, dec );
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for ( int i = 0; i < p.size(); ++i )
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{
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s += QStringLiteral( "%1%2 %3" ).arg( sep )
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.arg( int( p[i].x() * r ) / r )
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.arg( int( p[i].y() * r ) / r );
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sep = ",";
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}
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return s;
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}
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void TestQgsMapSettings::testDefaults()
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{
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QgsMapSettings ms;
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QCOMPARE( ms.destinationCrs(), QgsCoordinateReferenceSystem() );
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}
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void TestQgsMapSettings::visibleExtent()
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{
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QgsMapSettings ms;
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ms.setExtent( QgsRectangle( 0, 0, 100, 100 ) );
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ms.setOutputSize( QSize( 100, 50 ) );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "-50,0 : 150,100" ) );
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ms.setExtent( QgsRectangle( 0, 0, 100, 100 ) );
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ms.setOutputSize( QSize( 100, 100 ) );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "0,0 : 100,100" ) );
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ms.setExtent( QgsRectangle( 0, 0, 100, 100 ) );
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ms.setOutputSize( QSize( 50, 100 ) );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "0,-50 : 100,150" ) );
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ms.setExtent( QgsRectangle( 0, 0, 100, 100 ) );
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ms.setOutputSize( QSize( 50, 100 ) );
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ms.setRotation( 90 );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "-50,0 : 150,100" ) );
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ms.setRotation( -90 );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "-50,0 : 150,100" ) );
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ms.setExtent( QgsRectangle( 0, 0, 100, 50 ) );
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ms.setOutputSize( QSize( 50, 100 ) );
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ms.setRotation( 0 );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "0,-75 : 100,125" ) );
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ms.setRotation( 90 );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "-50,-25 : 150,75" ) );
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ms.setRotation( -90 );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "-50,-25 : 150,75" ) );
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ms.setRotation( 45 );
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QCOMPARE( ms.visibleExtent().toString( 0 ), QString( "-56,-81 : 156,131" ) );
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}
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void TestQgsMapSettings::mapUnitsPerPixel()
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{
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QgsMapSettings ms;
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ms.setExtent( QgsRectangle( 0, 0, 100, 100 ) );
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ms.setOutputSize( QSize( 100, 50 ) );
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QCOMPARE( ms.mapUnitsPerPixel(), 2.0 );
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ms.setOutputSize( QSize( 100, 100 ) );
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QCOMPARE( ms.mapUnitsPerPixel(), 1.0 );
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ms.setOutputSize( QSize( 50, 100 ) );
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QCOMPARE( ms.mapUnitsPerPixel(), 2.0 );
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ms.setOutputSize( QSize( 5000, 1000 ) );
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QCOMPARE( ms.mapUnitsPerPixel(), 0.1 );
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ms.setOutputSize( QSize( 1000, 500 ) );
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QCOMPARE( ms.mapUnitsPerPixel(), 0.2 );
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}
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void TestQgsMapSettings::visiblePolygon()
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{
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QgsMapSettings ms;
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ms.setExtent( QgsRectangle( 0, 0, 100, 100 ) );
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ms.setOutputSize( QSize( 100, 50 ) );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "-50 100,150 100,150 0,-50 0" ) );
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ms.setExtent( QgsRectangle( 0, -50, 100, 0 ) );
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ms.setOutputSize( QSize( 100, 50 ) );
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ms.setRotation( 90 );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "25 -75,25 25,75 25,75 -75" ) );
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ms.setRotation( -90 );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "75 25,75 -75,25 -75,25 25" ) );
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ms.setRotation( 30 );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "-5.8 -28.34,80.8 21.65,105.8 -21.65,19.19 -71.65" ) );
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ms.setRotation( -30 );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "19.19 21.65,105.8 -28.34,80.8 -71.65,-5.8 -21.65" ) );
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ms.setRotation( 45 );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "-3.03 -42.67,67.67 28.03,103.03 -7.32,32.32 -78.03" ) );
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ms.setRotation( -45 );
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QCOMPARE( toString( ms.visiblePolygon() ),
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QString( "32.32 28.03,103.03 -42.67,67.67 -78.03,-3.03 -7.32" ) );
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}
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void TestQgsMapSettings::testIsLayerVisible()
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{
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QgsVectorLayer *vlA = new QgsVectorLayer( "Point", "a", "memory" );
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QgsVectorLayer *vlB = new QgsVectorLayer( "Point", "b", "memory" );
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QList<QgsMapLayer *> layers;
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layers << vlA << vlB;
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QgsMapSettings ms;
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ms.setLayers( layers );
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QgsExpressionContext context;
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context << QgsExpressionContextUtils::mapSettingsScope( ms );
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// test checking for visible layer by id
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QgsExpression e( QString( "is_layer_visible( '%1' )" ).arg( vlA-> id() ) );
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QVariant r = e.evaluate( &context );
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QCOMPARE( r.toBool(), true );
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// test checking for visible layer by name
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QgsExpression e2( QString( "is_layer_visible( '%1' )" ).arg( vlB-> name() ) );
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r = e2.evaluate( &context );
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QCOMPARE( r.toBool(), true );
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// test checking for non-existent layer
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QgsExpression e3( QString( "is_layer_visible( 'non matching name' )" ) );
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r = e3.evaluate( &context );
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QCOMPARE( r.toBool(), false );
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delete vlA;
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delete vlB;
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}
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void TestQgsMapSettings::testMapLayerListUtils()
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{
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QgsVectorLayer *vlA = new QgsVectorLayer( "Point", "a", "memory" );
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QgsVectorLayer *vlB = new QgsVectorLayer( "Point", "b", "memory" );
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QList<QgsMapLayer *> listRawSource;
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listRawSource << vlA << vlB;
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QgsMapLayer *l = _qgis_findLayer( listRawSource, QStringLiteral( "a" ) );
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QCOMPARE( l, vlA );
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l = _qgis_findLayer( listRawSource, QStringLiteral( "z" ) );
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QCOMPARE( !l, true );
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QgsWeakMapLayerPointerList listQPointer = _qgis_listRawToQPointer( listRawSource );
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QCOMPARE( listQPointer.count(), 2 );
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QCOMPARE( listQPointer[0].data(), vlA );
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QCOMPARE( listQPointer[1].data(), vlB );
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QList<QgsMapLayer *> listRaw = _qgis_listQPointerToRaw( listQPointer );
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QCOMPARE( listRaw.count(), 2 );
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QCOMPARE( listRaw[0], vlA );
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QCOMPARE( listRaw[1], vlB );
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QStringList listIDs = _qgis_listQPointerToIDs( listQPointer );
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QCOMPARE( listIDs.count(), 2 );
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QCOMPARE( listIDs[0], vlA->id() );
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QCOMPARE( listIDs[1], vlB->id() );
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// now delete one layer!
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// QPointer to vlA must get invalidated
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delete vlA;
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QCOMPARE( listQPointer.count(), 2 ); // still two items but one is invalid
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QList<QgsMapLayer *> listRaw2 = _qgis_listQPointerToRaw( listQPointer );
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QCOMPARE( listRaw2.count(), 1 );
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QCOMPARE( listRaw2[0], vlB );
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QStringList listIDs2 = _qgis_listQPointerToIDs( listQPointer );
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QCOMPARE( listIDs2.count(), 1 );
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QCOMPARE( listIDs2[0], vlB->id() );
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delete vlB;
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}
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void TestQgsMapSettings::testXmlReadWrite()
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{
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//create a test dom element
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QDomImplementation DomImplementation;
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QDomDocumentType documentType =
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DomImplementation.createDocumentType(
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"qgis", "http://mrcc.com/qgis.dtd", "SYSTEM" );
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QDomDocument doc( documentType );
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QDomElement element = doc.createElement( "s" );
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//create a map settings object
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QgsMapSettings s1;
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s1.setDestinationCrs( QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3111" ) ) );
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//write to xml
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s1.writeXml( element, doc );
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// read a copy from xml
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QgsMapSettings s2;
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s2.readXml( element );
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QCOMPARE( s2.destinationCrs().authid(), QStringLiteral( "EPSG:3111" ) );
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// test writing a map settings without a valid CRS
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element = doc.createElement( "s" );
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s1.setDestinationCrs( QgsCoordinateReferenceSystem() );
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s1.writeXml( element, doc );
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s2.readXml( element );
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QVERIFY( !s2.destinationCrs().isValid() );
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}
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QGSTEST_MAIN( TestQgsMapSettings )
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#include "testqgsmapsettings.moc"
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