mirror of https://github.com/JakubMelka/PDF4QT.git
114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
// Copyright (C) 2019 Jakub Melka
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//
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// This file is part of PdfForQt.
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//
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// PdfForQt is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// PdfForQt 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 Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with PDFForQt. If not, see <https://www.gnu.org/licenses/>.
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#include "pdfrenderer.h"
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#include "pdfpainter.h"
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#include "pdfdocument.h"
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namespace pdf
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{
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PDFRenderer::PDFRenderer(const PDFDocument* document, const PDFFontCache* fontCache, const PDFOptionalContentActivity* optionalContentActivity, Features features) :
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m_document(document),
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m_fontCache(fontCache),
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m_optionalContentActivity(optionalContentActivity),
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m_features(features)
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{
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Q_ASSERT(document);
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}
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QList<PDFRenderError> PDFRenderer::render(QPainter* painter, const QRectF& rectangle, size_t pageIndex) const
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{
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Q_UNUSED(painter);
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Q_UNUSED(rectangle);
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const PDFCatalog* catalog = m_document->getCatalog();
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if (pageIndex >= catalog->getPageCount() || !catalog->getPage(pageIndex))
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{
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// Invalid page index
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return { PDFRenderError(RenderErrorType::Error, PDFTranslationContext::tr("Page %1 doesn't exist.").arg(pageIndex + 1)) };
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}
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const PDFPage* page = catalog->getPage(pageIndex);
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Q_ASSERT(page);
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QRectF mediaBox = page->getRotatedMediaBox();
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QMatrix matrix;
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switch (page->getPageRotation())
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{
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case PageRotation::None:
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{
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matrix.translate(rectangle.left(), rectangle.bottom());
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matrix.scale(rectangle.width() / mediaBox.width(), -rectangle.height() / mediaBox.height());
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break;
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}
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case PageRotation::Rotate90:
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{
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matrix.translate(rectangle.left(), rectangle.top());
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matrix.rotate(90);
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matrix.scale(rectangle.width() / mediaBox.width(), -rectangle.height() / mediaBox.height());
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break;
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}
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case PageRotation::Rotate270:
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{
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matrix.translate(rectangle.right(), rectangle.top());
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matrix.rotate(-90);
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matrix.scale(rectangle.width() / mediaBox.width(), -rectangle.height() / mediaBox.height());
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break;
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}
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case PageRotation::Rotate180:
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{
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matrix.translate(rectangle.left(), rectangle.top());
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matrix.scale(rectangle.width() / mediaBox.width(), rectangle.height() / mediaBox.height());
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break;
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}
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default:
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{
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Q_ASSERT(false);
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break;
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}
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}
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PDFPainter processor(painter, m_features, matrix, page, m_document, m_fontCache, m_optionalContentActivity);
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return processor.processContents();
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}
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QList<PDFRenderError> PDFRenderer::render(QPainter* painter, const QMatrix& matrix, size_t pageIndex) const
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{
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Q_UNUSED(painter);
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const PDFCatalog* catalog = m_document->getCatalog();
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if (pageIndex >= catalog->getPageCount() || !catalog->getPage(pageIndex))
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{
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// Invalid page index
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return { PDFRenderError(RenderErrorType::Error, PDFTranslationContext::tr("Page %1 doesn't exist.").arg(pageIndex + 1)) };
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}
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const PDFPage* page = catalog->getPage(pageIndex);
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Q_ASSERT(page);
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PDFPainter processor(painter, m_features, matrix, page, m_document, m_fontCache, m_optionalContentActivity);
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return processor.processContents();
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}
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} // namespace pdf
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