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testqgsgradients.cpp
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testqgsgradients.cpp
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/***************************************************************************
testqgsgradients.cpp
--------------------------------------
Date : 20 Jan 2008
Copyright : (C) 2008 by Tim Sutton
Email : tim @ linfiniti.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 <QObject>
#include <QString>
#include <QStringList>
#include <QApplication>
#include <QFileInfo>
#include <QDir>
#include <QDesktopServices>
//qgis includes...
#include <qgsmaplayer.h>
#include <qgsvectorlayer.h>
#include <qgsapplication.h>
#include <qgsproviderregistry.h>
#include <qgsproject.h>
#include <qgssymbol.h>
#include <qgssinglesymbolrenderer.h>
#include <qgsfillsymbollayer.h>
#include <qgscolorramp.h>
//qgis test includes
#include "qgsrenderchecker.h"
/**
* \ingroup UnitTests
* This is a unit test for gradient fill types.
*/
class TestQgsGradients : public QObject
{
Q_OBJECT
public:
TestQgsGradients() = default;
private slots:
void initTestCase();// will be called before the first testfunction is executed.
void cleanupTestCase();// will be called after the last testfunction was executed.
void init() {} // will be called before each testfunction is executed.
void cleanup() {} // will be called after every testfunction.
void gradientSymbol();
void gradientSymbolColors();
void gradientSymbolRamp();
void gradientSymbolRadial();
void gradientSymbolConical();
void gradientSymbolViewport();
void gradientSymbolReferencePoints();
void gradientSymbolCentroid();
void gradientSymbolReflectSpread();
void gradientSymbolRepeatSpread();
void gradientSymbolRotate();
void opacityWithDataDefinedColor();
void gradientSymbolFromQml();
private:
bool mTestHasError = false ;
bool setQml( const QString &type );
bool imageCheck( const QString &type );
QgsMapSettings mMapSettings;
QgsVectorLayer *mpPolysLayer = nullptr;
QgsGradientFillSymbolLayer *mGradientFill = nullptr;
QgsFillSymbol *mFillSymbol = nullptr;
QgsSingleSymbolRenderer *mSymbolRenderer = nullptr;
QString mTestDataDir;
QString mReport;
};
void TestQgsGradients::initTestCase()
{
mTestHasError = false;
// init QGIS's paths - true means that all path will be inited from prefix
QgsApplication::init();
QgsApplication::initQgis();
QgsApplication::showSettings();
//create some objects that will be used in all tests...
QString myDataDir( TEST_DATA_DIR ); //defined in CmakeLists.txt
mTestDataDir = myDataDir + '/';
//
//create a poly layer that will be used in all tests...
//
QString myPolysFileName = mTestDataDir + "polys.shp";
QFileInfo myPolyFileInfo( myPolysFileName );
mpPolysLayer = new QgsVectorLayer( myPolyFileInfo.filePath(),
myPolyFileInfo.completeBaseName(), QStringLiteral( "ogr" ) );
QgsVectorSimplifyMethod simplifyMethod;
simplifyMethod.setSimplifyHints( QgsVectorSimplifyMethod::NoSimplification );
mpPolysLayer->setSimplifyMethod( simplifyMethod );
//setup gradient fill
mGradientFill = new QgsGradientFillSymbolLayer();
mFillSymbol = new QgsFillSymbol();
mFillSymbol->changeSymbolLayer( 0, mGradientFill );
mSymbolRenderer = new QgsSingleSymbolRenderer( mFillSymbol );
mpPolysLayer->setRenderer( mSymbolRenderer );
// We only need maprender instead of mapcanvas
// since maprender does not require a qui
// and is more light weight
//
mMapSettings.setLayers( QList<QgsMapLayer *>() << mpPolysLayer );
mReport += QLatin1String( "<h1>Gradient Renderer Tests</h1>\n" );
}
void TestQgsGradients::cleanupTestCase()
{
QString myReportFile = QDir::tempPath() + "/qgistest.html";
QFile myFile( myReportFile );
if ( myFile.open( QIODevice::WriteOnly | QIODevice::Append ) )
{
QTextStream myQTextStream( &myFile );
myQTextStream << mReport;
myFile.close();
}
delete mpPolysLayer;
QgsApplication::exitQgis();
}
void TestQgsGradients::gradientSymbol()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer test</h2>\n" );
mGradientFill->setColor( QColor( "red" ) );
mGradientFill->setColor2( QColor( "blue" ) );
mGradientFill->setGradientType( QgsGradientFillSymbolLayer::Linear );
mGradientFill->setGradientColorType( QgsGradientFillSymbolLayer::SimpleTwoColor );
mGradientFill->setCoordinateMode( QgsGradientFillSymbolLayer::Feature );
mGradientFill->setGradientSpread( QgsGradientFillSymbolLayer::Pad );
mGradientFill->setReferencePoint1( QPointF( 0, 0 ) );
mGradientFill->setReferencePoint2( QPointF( 1, 1 ) );
QVERIFY( imageCheck( "gradient" ) );
}
void TestQgsGradients::gradientSymbolColors()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer color test</h2>\n" );
mGradientFill->setColor( QColor( "green" ) );
mGradientFill->setColor2( QColor( "white" ) );
QVERIFY( imageCheck( "gradient_colors" ) );
mGradientFill->setColor( QColor( "red" ) );
mGradientFill->setColor2( QColor( "blue" ) );
}
void TestQgsGradients::gradientSymbolRamp()
{
QgsGradientColorRamp *gradientRamp = new QgsGradientColorRamp( QColor( Qt::red ), QColor( Qt::blue ) );
QgsGradientStopsList stops;
stops.append( QgsGradientStop( 0.5, QColor( Qt::white ) ) );
gradientRamp->setStops( stops );
mGradientFill->setColorRamp( gradientRamp );
mGradientFill->setGradientColorType( QgsGradientFillSymbolLayer::ColorRamp );
QVERIFY( imageCheck( "gradient_ramp" ) );
mGradientFill->setGradientColorType( QgsGradientFillSymbolLayer::SimpleTwoColor );
}
void TestQgsGradients::gradientSymbolRadial()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer radial test</h2>\n" );
mGradientFill->setGradientType( QgsGradientFillSymbolLayer::Radial );
QVERIFY( imageCheck( "gradient_radial" ) );
mGradientFill->setGradientType( QgsGradientFillSymbolLayer::Linear );
}
void TestQgsGradients::gradientSymbolConical()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer conical test</h2>\n" );
mGradientFill->setGradientType( QgsGradientFillSymbolLayer::Conical );
mGradientFill->setReferencePoint1( QPointF( 0.5, 0.5 ) );
QVERIFY( imageCheck( "gradient_conical" ) );
mGradientFill->setReferencePoint1( QPointF( 0, 0 ) );
mGradientFill->setGradientType( QgsGradientFillSymbolLayer::Linear );
}
void TestQgsGradients::gradientSymbolViewport()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer viewport test</h2>\n" );
mGradientFill->setCoordinateMode( QgsGradientFillSymbolLayer::Viewport );
QVERIFY( imageCheck( "gradient_viewport" ) );
mGradientFill->setCoordinateMode( QgsGradientFillSymbolLayer::Feature );
}
void TestQgsGradients::gradientSymbolReferencePoints()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer reference points test</h2>\n" );
mGradientFill->setReferencePoint1( QPointF( 0.5, 0.4 ) );
mGradientFill->setReferencePoint2( QPointF( 0, 0.2 ) );
QVERIFY( imageCheck( "gradient_refpoints" ) );
mGradientFill->setReferencePoint1( QPointF( 0, 0 ) );
mGradientFill->setReferencePoint2( QPointF( 1, 1 ) );
}
void TestQgsGradients::gradientSymbolCentroid()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer centroid reference point test</h2>\n" );
mGradientFill->setReferencePoint1IsCentroid( true );
QVERIFY( imageCheck( "gradient_ref1centroid" ) );
mGradientFill->setReferencePoint1IsCentroid( false );
mGradientFill->setReferencePoint2IsCentroid( true );
QVERIFY( imageCheck( "gradient_ref2centroid" ) );
mGradientFill->setReferencePoint2IsCentroid( false );
}
void TestQgsGradients::gradientSymbolReflectSpread()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer reflect spread test</h2>\n" );
mGradientFill->setReferencePoint2( QPointF( 0.5, 0.5 ) );
mGradientFill->setGradientSpread( QgsGradientFillSymbolLayer::Reflect );
QVERIFY( imageCheck( "gradient_reflect" ) );
mGradientFill->setGradientSpread( QgsGradientFillSymbolLayer::Pad );
mGradientFill->setReferencePoint2( QPointF( 1, 1 ) );
}
void TestQgsGradients::gradientSymbolRepeatSpread()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer repeat spread test</h2>\n" );
mGradientFill->setReferencePoint2( QPointF( 0.5, 0.5 ) );
mGradientFill->setGradientSpread( QgsGradientFillSymbolLayer::Repeat );
QVERIFY( imageCheck( "gradient_repeat" ) );
mGradientFill->setGradientSpread( QgsGradientFillSymbolLayer::Pad );
mGradientFill->setReferencePoint2( QPointF( 1, 1 ) );
}
void TestQgsGradients::gradientSymbolRotate()
{
mReport += QLatin1String( "<h2>Gradient symbol renderer rotate test</h2>\n" );
mGradientFill->setAngle( 90 );
QVERIFY( imageCheck( "gradient_rotate" ) );
mGradientFill->setAngle( 0 );
}
void TestQgsGradients::opacityWithDataDefinedColor()
{
mGradientFill->setDataDefinedProperty( QgsSymbolLayer::PropertyFillColor, QgsProperty::fromExpression( QStringLiteral( "if(importance > 2, 'red', 'green')" ) ) );
mGradientFill->setDataDefinedProperty( QgsSymbolLayer::PropertySecondaryColor, QgsProperty::fromExpression( QStringLiteral( "if(importance > 2, 'blue', 'magenta')" ) ) );
mFillSymbol->setOpacity( 0.5 );
bool result = imageCheck( QStringLiteral( "gradient_opacityddcolor" ) );
QVERIFY( result );
}
void TestQgsGradients::gradientSymbolFromQml()
{
mReport += QLatin1String( "<h2>Gradient symbol from QML test</h2>\n" );
QVERIFY( setQml( "gradient" ) );
QgsVectorSimplifyMethod simplifyMethod;
simplifyMethod.setSimplifyHints( QgsVectorSimplifyMethod::NoSimplification );
mpPolysLayer->setSimplifyMethod( simplifyMethod );
QVERIFY( imageCheck( "gradient_from_qml" ) );
}
//
// Private helper functions not called directly by CTest
//
bool TestQgsGradients::setQml( const QString &type )
{
//load a qml style and apply to our layer
//the style will correspond to the renderer
//type we are testing
QString myFileName = mTestDataDir + "polys_" + type + "_symbol.qml";
bool myStyleFlag = false;
QString error = mpPolysLayer->loadNamedStyle( myFileName, myStyleFlag );
if ( !myStyleFlag )
{
qDebug( "%s", error.toLocal8Bit().constData() );
}
return myStyleFlag;
}
bool TestQgsGradients::imageCheck( const QString &testType )
{
//use the QgsRenderChecker test utility class to
//ensure the rendered output matches our control image
mMapSettings.setExtent( mpPolysLayer->extent() );
QgsRenderChecker myChecker;
myChecker.setControlPathPrefix( QStringLiteral( "symbol_gradient" ) );
myChecker.setControlName( "expected_" + testType );
myChecker.setMapSettings( mMapSettings );
bool myResultFlag = myChecker.runTest( testType );
mReport += myChecker.report();
return myResultFlag;
}
QGSTEST_MAIN( TestQgsGradients )
#include "testqgsgradients.moc"