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/*************************************************************************** | ||
testqgsblendmodes.cpp | ||
-------------------------------------- | ||
Date : May 2013 | ||
Copyright : (C) 2013 by Nyall Dawson, Tim Sutton | ||
Email : nyall dot dawson at gmail.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 <QtTest> | ||
#include <QObject> | ||
#include <QString> | ||
#include <QStringList> | ||
#include <QApplication> | ||
#include <QDir> | ||
#include <QPainter> | ||
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//qgis includes... | ||
#include <qgsmaprenderer.h> | ||
#include <qgsmaplayer.h> | ||
#include <qgsvectorlayer.h> | ||
#include <qgsapplication.h> | ||
#include <qgsproviderregistry.h> | ||
#include <qgsmaplayerregistry.h> | ||
#include <qgsmultibandcolorrenderer.h> | ||
#include <qgsrasterlayer.h> | ||
//qgis test includes | ||
#include "qgsrenderchecker.h" | ||
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/** \ingroup UnitTests | ||
* This is a unit test for layer blend modes | ||
*/ | ||
class TestQgsBlendModes: public QObject | ||
{ | ||
Q_OBJECT; | ||
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. | ||
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void vectorBlending(); | ||
void rasterBlending(); | ||
private: | ||
bool imageCheck( QString theType ); //as above | ||
QgsMapRenderer * mpMapRenderer; | ||
QgsMapLayer * mpPointsLayer; | ||
QgsMapLayer * mpPolysLayer; | ||
QgsRasterLayer* mRasterLayer1; | ||
QgsRasterLayer* mRasterLayer2; | ||
QString mTestDataDir; | ||
}; | ||
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void TestQgsBlendModes::initTestCase() | ||
{ | ||
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// init QGIS's paths - true means that all path will be inited from prefix | ||
QgsApplication::init(); | ||
QgsApplication::initQgis(); | ||
QgsApplication::showSettings(); | ||
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//create some objects that will be used in tests | ||
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//create a point layer | ||
QString myDataDir( TEST_DATA_DIR ); //defined in CmakeLists.txt | ||
mTestDataDir = myDataDir + QDir::separator(); | ||
QString myPointsFileName = mTestDataDir + "points.shp"; | ||
QFileInfo myPointFileInfo( myPointsFileName ); | ||
mpPointsLayer = new QgsVectorLayer( myPointFileInfo.filePath(), | ||
myPointFileInfo.completeBaseName(), "ogr" ); | ||
QgsMapLayerRegistry::instance()->addMapLayers( | ||
QList<QgsMapLayer *>() << mpPointsLayer ); | ||
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//create a poly layer that will be used in tests | ||
QString myPolysFileName = mTestDataDir + "polys.shp"; | ||
QFileInfo myPolyFileInfo( myPolysFileName ); | ||
mpPolysLayer = new QgsVectorLayer( myPolyFileInfo.filePath(), | ||
myPolyFileInfo.completeBaseName(), "ogr" ); | ||
QgsMapLayerRegistry::instance()->addMapLayers( | ||
QList<QgsMapLayer *>() << mpPolysLayer ); | ||
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//create two raster layers | ||
QFileInfo rasterFileInfo( mTestDataDir + "landsat.tif" ); | ||
mRasterLayer1 = new QgsRasterLayer( rasterFileInfo.filePath(), | ||
rasterFileInfo.completeBaseName() ); | ||
mRasterLayer2 = new QgsRasterLayer( rasterFileInfo.filePath(), | ||
rasterFileInfo.completeBaseName() ); | ||
QgsMultiBandColorRenderer* rasterRenderer = new QgsMultiBandColorRenderer( mRasterLayer1->dataProvider(), 2, 3, 4 ); | ||
mRasterLayer1->setRenderer( rasterRenderer ); | ||
mRasterLayer2->setRenderer( rasterRenderer ); | ||
QgsMapLayerRegistry::instance()->addMapLayers( | ||
QList<QgsMapLayer *>() << mRasterLayer1 ); | ||
QgsMapLayerRegistry::instance()->addMapLayers( | ||
QList<QgsMapLayer *>() << mRasterLayer2); | ||
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mpMapRenderer = new QgsMapRenderer(); | ||
} | ||
void TestQgsBlendModes::cleanupTestCase() | ||
{ | ||
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} | ||
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void TestQgsBlendModes::vectorBlending() | ||
{ | ||
//Add two vector layers | ||
QStringList myLayers; | ||
myLayers << mpPointsLayer->id(); | ||
myLayers << mpPolysLayer->id(); | ||
mpMapRenderer->setLayerSet( myLayers ); | ||
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//Set blending modes for both layers | ||
mpPointsLayer->setBlendMode( QPainter::CompositionMode_Overlay ); | ||
mpPolysLayer->setBlendMode( QPainter::CompositionMode_Multiply ); | ||
mpMapRenderer->setExtent( mpPointsLayer->extent() ); | ||
QVERIFY( imageCheck( "vector_blendmodes" ) ); | ||
} | ||
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void TestQgsBlendModes::rasterBlending() | ||
{ | ||
//Add two raster layers to map renderer | ||
QStringList myLayers; | ||
myLayers << mRasterLayer1->id(); | ||
myLayers << mRasterLayer2->id(); | ||
mpMapRenderer->setLayerSet( myLayers ); | ||
mpMapRenderer->setExtent( mRasterLayer1->extent() ); | ||
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// set blending mode for top layer | ||
mRasterLayer1->setBlendMode( QPainter::CompositionMode_Plus ); | ||
QVERIFY( imageCheck( "raster_blendmodes" ) ); | ||
} | ||
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// | ||
// Private helper functions not called directly by CTest | ||
// | ||
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bool TestQgsBlendModes::imageCheck( QString theTestType ) | ||
{ | ||
//use the QgsRenderChecker test utility class to | ||
//ensure the rendered output matches our control image | ||
QgsRenderChecker myChecker; | ||
myChecker.setControlName( "expected_" + theTestType ); | ||
myChecker.setMapRenderer( mpMapRenderer ); | ||
bool myResultFlag = myChecker.runTest( theTestType ); | ||
return myResultFlag; | ||
} | ||
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QTEST_MAIN( TestQgsBlendModes ) | ||
#include "moc_testqgsblendmodes.cxx" |
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