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qgscompositionchecker.cpp
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qgscompositionchecker.cpp
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/***************************************************************************
qgscompositionchecker.cpp - check rendering of Qgscomposition against an expected image
--------------------------------------
Date : 5 Juli 2012
Copyright : (C) 2012 by Marco Hugentobler
email : marco@sourcepole.ch
***************************************************************************
* *
* 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 "qgscompositionchecker.h"
#include "qgscomposition.h"
#include <QDebug>
#include <QDir>
#include <QFileInfo>
#include <QImage>
#include <QPainter>
QgsCompositionChecker::QgsCompositionChecker( const QString& testName, QgsComposition* composition )
: QgsMultiRenderChecker()
, mTestName( testName )
, mComposition( composition )
, mSize( 1122, 794 )
, mDotsPerMeter( 96 / 25.4 * 1000 )
{
// The composer has some slight render inconsistencies on the whole image sometimes
setColorTolerance( 5 );
}
QgsCompositionChecker::QgsCompositionChecker()
{
}
QgsCompositionChecker::~QgsCompositionChecker()
{
}
bool QgsCompositionChecker::testComposition( QString &theReport, int page, int pixelDiff )
{
if ( !mComposition )
{
return false;
}
setControlName( "expected_" + mTestName );
#if 0
//fake mode to generate expected image
//assume 96 dpi and size of the control image 1122 * 794
QImage newImage( QSize( 1122, 794 ), QImage::Format_RGB32 );
mComposition->setPlotStyle( QgsComposition::Print );
newImage.setDotsPerMeterX( 96 / 25.4 * 1000 );
newImage.setDotsPerMeterY( 96 / 25.4 * 1000 );
drawBackground( &newImage );
QPainter expectedPainter( &newImage );
//QRectF sourceArea( 0, 0, mComposition->paperWidth(), mComposition->paperHeight() );
//QRectF targetArea( 0, 0, 3507, 2480 );
mComposition->renderPage( &expectedPainter, page );
expectedPainter.end();
newImage.save( mExpectedImageFile, "PNG" );
return true;
#endif //0
QImage outputImage( mSize, QImage::Format_RGB32 );
mComposition->setPlotStyle( QgsComposition::Print );
outputImage.setDotsPerMeterX( mDotsPerMeter );
outputImage.setDotsPerMeterY( mDotsPerMeter );
drawBackground( &outputImage );
QPainter p( &outputImage );
mComposition->renderPage( &p, page );
p.end();
QString renderedFilePath = QDir::tempPath() + QDir::separator() + QFileInfo( mTestName ).baseName() + "_rendered.png";
outputImage.save( renderedFilePath, "PNG" );
setRenderedImage( renderedFilePath );
bool testResult = runTest( mTestName, pixelDiff );
theReport += report();
return testResult;
}