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/*
* Copyright (C) 2013 Open Education Foundation
*
* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
* l'Education Numérique en Afrique (GIP ENA)
*
* This file is part of OpenBoard.
*
* OpenBoard 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, version 3 of the License,
* with a specific linking exception for the OpenSSL project's
* "OpenSSL" library (or with modified versions of it that use the
* same license as the "OpenSSL" library).
*
* OpenBoard is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
*/
#include "UBExportPDF.h"
#include <QtCore>
#include <QtSvg>
#include "core/UBApplication.h"
#include "core/UBSettings.h"
#include "core/UBSetting.h"
#include "core/UBPersistenceManager.h"
#include "domain/UBGraphicsScene.h"
#include "domain/UBGraphicsSvgItem.h"
#include "document/UBDocumentProxy.h"
#include "pdf/GraphicsPDFItem.h"
#include "core/memcheck.h"
UBExportPDF::UBExportPDF(QObject *parent)
: UBExportAdaptor(parent)
{
// NOOP
}
UBExportPDF::~UBExportPDF()
{
// NOOP
}
void UBExportPDF::persist(UBDocumentProxy* pDocumentProxy)
{
if (!pDocumentProxy)
return;
QString filename = askForFileName(pDocumentProxy, tr("Export as PDF File"));
if (filename.length() > 0)
{
QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
UBApplication::showMessage(tr("Exporting document..."));
persistsDocument(pDocumentProxy, filename);
UBApplication::showMessage(tr("Export successful."));
QApplication::restoreOverrideCursor();
}
}
void UBExportPDF::persistsDocument(UBDocumentProxy* pDocumentProxy, const QString& filename)
{
QPrinter pdfPrinter;
qDebug() << "exporting document to PDF" << filename;
pdfPrinter.setOutputFormat(QPrinter::PdfFormat);
pdfPrinter.setResolution(UBSettings::settings()->pdfResolution->get().toInt());
pdfPrinter.setOutputFileName(filename);
pdfPrinter.setFullPage(true);
//need to calculate screen resolution
QDesktopWidget* desktop = UBApplication::desktop();
int dpiCommon = (desktop->physicalDpiX() + desktop->physicalDpiY()) / 2;
float scaleFactor = 72.0f / dpiCommon;
QPainter pdfPainter;
bool painterNeedsBegin = true;
int existingPageCount = pDocumentProxy->pageCount();
for(int pageIndex = 0 ; pageIndex < existingPageCount; pageIndex++)
{
UBGraphicsScene* scene = UBPersistenceManager::persistenceManager()->loadDocumentScene(pDocumentProxy, pageIndex);
UBApplication::showMessage(tr("Exporting page %1 of %2").arg(pageIndex + 1).arg(existingPageCount));
// set background to white, no crossing for PDF output
bool isDark = scene->isDarkBackground();
bool isCrossed = scene->isCrossedBackground();
scene->setBackground(false, false);
QSize pageSize = scene->nominalSize();
// set high res rendering
scene->setRenderingQuality(UBItem::RenderingQualityHigh);
scene->setRenderingContext(UBGraphicsScene::NonScreen);
//setting page size to appropriate value
pdfPrinter.setPaperSize(QSizeF(pageSize.width()*scaleFactor, pageSize.height()*scaleFactor), QPrinter::Point);
if(painterNeedsBegin) painterNeedsBegin = !pdfPainter.begin(&pdfPrinter);
//render to PDF
scene->render(&pdfPainter, QRectF(), scene->normalizedSceneRect());
if (pageIndex < existingPageCount - 1) pdfPrinter.newPage();
//restore screen rendering quality
scene->setRenderingContext(UBGraphicsScene::Screen);
scene->setRenderingQuality(UBItem::RenderingQualityNormal);
//restore background state
scene->setBackground(isDark, isCrossed);
}
if(!painterNeedsBegin) pdfPainter.end();
}
QString UBExportPDF::exportExtention()
{
return QString(".pdf");
}
QString UBExportPDF::exportName()
{
return tr("Export to PDF");
}