Issue #107: Add scanned pdf conversion to bitonal [enhancement]

Pdf4QtViewer/pdfcreatebitonaldocumentdialog.h

@@ -0,0 +1,61 @@
+//    Copyright (C) 2023 Jakub Melka
+//
+//    This file is part of PDF4QT.
+//
+//    PDF4QT is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Lesser General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    with the written consent of the copyright owner, any later version.
+//
+//    PDF4QT 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 Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public License
+//    along with PDF4QT.  If not, see <https://www.gnu.org/licenses/>.
+
+#ifndef PDFCREATEBITONALDOCUMENTDIALOG_H
+#define PDFCREATEBITONALDOCUMENTDIALOG_H
+
+#include "pdfdocument.h"
+
+#include <QDialog>
+#include <QFuture>
+
+namespace Ui
+{
+class PDFCreateBitonalDocumentDialog;
+}
+
+namespace pdfviewer
+{
+
+class PDFCreateBitonalDocumentDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit PDFCreateBitonalDocumentDialog(const pdf::PDFDocument* document, QWidget* parent);
+    virtual ~PDFCreateBitonalDocumentDialog() override;
+
+    pdf::PDFDocument takeBitonaldDocument() { return qMove(m_bitonalDocument); }
+
+private:
+    void createBitonalDocument();
+    void onCreateBitonalDocumentButtonClicked();
+
+    void updateUi();
+
+    Ui::PDFCreateBitonalDocumentDialog* ui;
+    const pdf::PDFDocument* m_document;
+    QPushButton* m_createBitonalDocumentButton;
+    bool m_conversionInProgress;
+    bool m_processed;
+    QFuture<void> m_future;
+    pdf::PDFDocument m_bitonalDocument;
+};
+
+}   // namespace pdfviewer
+
+#endif // PDFCREATEBITONALDOCUMENTDIALOG_H