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Updates to raster tests - added image writing capability. At teh moment it will write to /tmp/raster_test.png. Later I will write different files out after performing various colour and transparency operations on the test dataset.

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git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@7979 c8812cc2-4d05-0410-92ff-de0c093fc19c
This commit is contained in:
timlinux 2008-01-16 01:47:13 +00:00
parent e2022d6b67
commit 831a55edcb
1 changed files with 42 additions and 0 deletions
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42
tests/src/core/testqgsrasterlayer.cpp
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@ -21,11 +21,17 @@
#include <QApplication>
#include <QFileInfo>
#include <QDir>
#include <QPainter>
#include <QSettings>
#include <QTime>
//qgis includes...
#include <qgsrasterlayer.h>
#include <qgsrasterbandstats.h>
#include <qgsmaplayerregistry.h>
#include <qgsapplication.h>
#include <qgsmaprender.h>
/** \ingroup UnitTests
* This is a unit test for the QgsRasterLayer class.
@ -42,7 +48,9 @@ class TestQgsRasterLayer: public QObject
void isValid();
void checkDimensions();
private:
void render(QString theFileName);
QgsRasterLayer * mpLayer;
QgsMapRender * mpMapRenderer;
};
void TestQgsRasterLayer::initTestCase()
@ -66,11 +74,19 @@ void TestQgsRasterLayer::initTestCase()
QFileInfo myRasterFileInfo ( myFileName );
mpLayer = new QgsRasterLayer ( myRasterFileInfo.filePath(),
myRasterFileInfo.completeBaseName() );
// Register the layer with the registry
QgsMapLayerRegistry::instance()->addMapLayer(mpLayer);
// add the test layer to the maprender
mpMapRenderer = new QgsMapRender();
QStringList myLayers;
myLayers << mpLayer->getLayerID();
mpMapRenderer->setLayerSet(myLayers);
}
void TestQgsRasterLayer::isValid()
{
QVERIFY ( mpLayer->isValid() );
render("raster_test.png");
}
void TestQgsRasterLayer::checkDimensions()
{
@ -81,6 +97,32 @@ void TestQgsRasterLayer::checkDimensions()
QVERIFY ( mpLayer->getRasterBandStats(1).elementCount == 100 );
}
void TestQgsRasterLayer::render(QString theFileName)
{
//
// Now render our layers onto a pixmap
//
QPixmap myPixmap( 100,100 );
myPixmap.fill ( QColor ( "#98dbf9" ) );
QPainter myPainter( &myPixmap );
mpMapRenderer->setOutputSize( QSize ( 100,100 ),72 );
mpMapRenderer->setExtent(mpLayer->extent());
qDebug ("Extents set to:");
qDebug (mpLayer->extent().stringRep());
QTime myTime;
myTime.start();
mpMapRenderer->render( &myPainter );
qDebug ("Elapsed time in ms for render job: " +
QString::number ( myTime.elapsed() ).toLocal8Bit());
myPainter.end();
//
// Save the pixmap to disk so the user can make a
// visual assessment if needed
//
myPixmap.save (QDir::tempPath() + QDir::separator() + theFileName);
}
QTEST_MAIN(TestQgsRasterLayer)
#include "moc_testqgsrasterlayer.cxx"