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155 lines
4.7 KiB
155 lines
4.7 KiB
/*
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* Copyright (C) 2015-2016 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "UBExportPDF.h"
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#include <QtCore>
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#include <QtSvg>
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#include <QPrinter>
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#include <QPdfWriter>
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#include "core/UBApplication.h"
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#include "core/UBSettings.h"
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#include "core/UBSetting.h"
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#include "core/UBPersistenceManager.h"
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#include "domain/UBGraphicsScene.h"
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#include "domain/UBGraphicsSvgItem.h"
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#include "domain/UBGraphicsPDFItem.h"
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#include "document/UBDocumentProxy.h"
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#include "document/UBDocumentController.h"
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#include "pdf/GraphicsPDFItem.h"
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#include "core/memcheck.h"
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UBExportPDF::UBExportPDF(QObject *parent)
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: UBExportAdaptor(parent)
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{
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// NOOP
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}
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UBExportPDF::~UBExportPDF()
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{
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// NOOP
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}
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void UBExportPDF::persist(UBDocumentProxy* pDocumentProxy)
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{
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persistLocally(pDocumentProxy, tr("Export as PDF File"));
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}
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bool UBExportPDF::associatedActionactionAvailableFor(const QModelIndex &selectedIndex)
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{
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const UBDocumentTreeModel *docModel = qobject_cast<const UBDocumentTreeModel*>(selectedIndex.model());
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if (!selectedIndex.isValid() || docModel->isCatalog(selectedIndex)) {
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return false;
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}
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return true;
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}
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bool UBExportPDF::persistsDocument(UBDocumentProxy* pDocumentProxy, const QString& filename)
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{
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QPdfWriter pdfWriter(filename);
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qDebug() << "exporting document to PDF" << filename;
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pdfWriter.setResolution(UBSettings::settings()->pdfResolution->get().toInt());
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pdfWriter.setPageMargins(QMarginsF());
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pdfWriter.setTitle(pDocumentProxy->name());
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pdfWriter.setCreator("OpenBoard PDF export");
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//need to calculate screen resolution
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QDesktopWidget* desktop = UBApplication::desktop();
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int dpiCommon = (desktop->physicalDpiX() + desktop->physicalDpiY()) / 2;
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float scaleFactor = 72.0f / dpiCommon;
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QPainter pdfPainter;
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bool painterNeedsBegin = true;
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int existingPageCount = pDocumentProxy->pageCount();
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for(int pageIndex = 0 ; pageIndex < existingPageCount; pageIndex++) {
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UBGraphicsScene* scene = UBPersistenceManager::persistenceManager()->loadDocumentScene(pDocumentProxy, pageIndex);
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UBApplication::showMessage(tr("Exporting page %1 of %2").arg(pageIndex + 1).arg(existingPageCount));
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// set background to white, no crossing for PDF output
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bool isDark = scene->isDarkBackground();
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UBPageBackground pageBackground = scene->pageBackground();
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scene->setBackground(false, UBPageBackground::plain);
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// pageSize is the output PDF page size; it is set to equal the scene's boundary size; if the contents
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// of the scene overflow from the boundaries, they will be scaled down.
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QSize pageSize = scene->sceneSize();
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// set high res rendering
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scene->setRenderingQuality(UBItem::RenderingQualityHigh);
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scene->setRenderingContext(UBGraphicsScene::NonScreen);
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// Setting output page size
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QPageSize outputPageSize = QPageSize(QSizeF(pageSize.width()*scaleFactor, pageSize.height()*scaleFactor), QPageSize::Point);
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pdfWriter.setPageSize(outputPageSize);
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// Call begin only once
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if(painterNeedsBegin)
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painterNeedsBegin = !pdfPainter.begin(&pdfWriter);
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else if (pageIndex < existingPageCount)
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pdfWriter.newPage();
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// Render the scene
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scene->render(&pdfPainter, QRectF(), scene->normalizedSceneRect());
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// Restore screen rendering quality
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scene->setRenderingContext(UBGraphicsScene::Screen);
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scene->setRenderingQuality(UBItem::RenderingQualityNormal);
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// Restore background state
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scene->setBackground(isDark, pageBackground);
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}
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if(!painterNeedsBegin)
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pdfPainter.end();
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return true;
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}
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QString UBExportPDF::exportExtention()
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{
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return QString(".pdf");
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}
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QString UBExportPDF::exportName()
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{
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return tr("Export to PDF");
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}
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