mirror of https://github.com/JakubMelka/PDF4QT.git
127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
// Copyright (C) 2021-2024 Jakub Melka
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//
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// This file is part of PDF4QT.
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//
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// PDF4QT 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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// with the written consent of the copyright owner, any later version.
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//
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// PDF4QT 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 PDF4QT. If not, see <https://www.gnu.org/licenses/>.
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#ifndef PDFDIFF_UTILS_H
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#define PDFDIFF_UTILS_H
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#include "settings.h"
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#include "pdfdiff.h"
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#include "pdfdrawspacecontroller.h"
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#include "pdfdocumentdrawinterface.h"
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namespace pdf
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{
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class PDFDocumentBuilder;
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} // namespace pdf
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namespace pdfdiff
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{
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class ComparedDocumentMapper
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{
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public:
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enum class Mode
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{
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Left,
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Right,
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Combined,
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Overlay
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};
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void update(Mode mode,
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bool filterDifferences,
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const pdf::PDFDiffResult& diff,
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const pdf::PDFDocument* leftDocument,
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const pdf::PDFDocument* rightDocument,
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const pdf::PDFDocument* currentDocument);
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const pdf::PDFDrawSpaceController::LayoutItems& getLayout() const { return m_layout; }
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void setPageSequence(const pdf::PDFDiffResult::PageSequence& sequence) { m_pageSequence = sequence; }
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/// Returns left page index (that means page index in left document),
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/// if it doesn't exist, -1 is returned.
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/// \param pageIndex Actual page index
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pdf::PDFInteger getLeftPageIndex(pdf::PDFInteger pageIndex) const;
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/// Returns right page index (that means page index in right document),
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/// if it doesn't exist, -1 is returned.
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/// \param pageIndex Actual page index
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pdf::PDFInteger getRightPageIndex(pdf::PDFInteger pageIndex) const;
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/// Returns actual page index from left page index, or -1.
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/// \param leftPageIndex Left page index
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pdf::PDFInteger getPageIndexFromLeftPageIndex(pdf::PDFInteger leftPageIndex) const;
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/// Returns actual page index from right page index, or -1.
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/// \param rightPageIndex Right page index
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pdf::PDFInteger getPageIndexFromRightPageIndex(pdf::PDFInteger rightPageIndex) const;
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private:
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pdf::PDFDrawSpaceController::LayoutItems m_layout;
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bool m_allLeft = false;
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bool m_allRight = false;
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std::map<pdf::PDFInteger, pdf::PDFInteger> m_leftPageIndices;
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std::map<pdf::PDFInteger, pdf::PDFInteger> m_rightPageIndices;
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pdf::PDFDiffResult::PageSequence m_pageSequence;
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};
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class DifferencesDrawInterface : public pdf::IDocumentDrawInterface
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{
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Q_DECLARE_TR_FUNCTIONS(pdfdiff::DifferencesDrawInterface)
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public:
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explicit DifferencesDrawInterface(const Settings* settings,
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const ComparedDocumentMapper* mapper,
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const pdf::PDFDiffResult* diffResult);
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virtual void drawPage(QPainter* painter, pdf::PDFInteger pageIndex,
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const pdf::PDFPrecompiledPage* compiledPage,
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pdf::PDFTextLayoutGetter& layoutGetter,
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const QTransform& pagePointToDevicePointMatrix,
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QList<pdf::PDFRenderError>& errors) const override;
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virtual void drawPostRendering(QPainter* painter, QRect rect) const override;
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/// Draw annotations for differences
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/// \param document Document
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/// \param builder Builder
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void drawAnnotations(const pdf::PDFDocument* document, pdf::PDFDocumentBuilder* builder);
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private:
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void drawRectangle(QPainter* painter,
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const QTransform& pagePointToDevicePointMatrix,
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const QRectF& rect,
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QColor color) const;
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void drawMarker(QPainter* painter,
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const QTransform& pagePointToDevicePointMatrix,
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const QRectF& rect,
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QColor color,
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bool isLeft) const;
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QColor getColorForIndex(size_t index) const;
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const Settings* m_settings;
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const ComparedDocumentMapper* m_mapper;
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const pdf::PDFDiffResult* m_diffResult;
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};
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} // namespace pdfdiff
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#endif // PDFDIFF_UTILS_H
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