qt-everywhere-src-5.15.1/qtwebengine/src/pdf/api/qpdfpagenavigation.h

/****************************************************************************
**
** Copyright (C) 2017 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Tobias König <tobias.koenig@kdab.com>
** Copyright (C) 2020 The Qt Company Ltd.
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** This file is part of the QtPDF module of the Qt Toolkit.
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#ifndef QPDFPAGENAVIGATION_H
#define QPDFPAGENAVIGATION_H

#include <QtPdf/qtpdfglobal.h>
#include <QtCore/qobject.h>

QT_BEGIN_NAMESPACE

class QPdfDocument;
class QPdfPageNavigationPrivate;

class Q_PDF_EXPORT QPdfPageNavigation : public QObject
{
    Q_OBJECT

    Q_PROPERTY(QPdfDocument* document READ document WRITE setDocument NOTIFY documentChanged)

    Q_PROPERTY(int currentPage READ currentPage WRITE setCurrentPage NOTIFY currentPageChanged)
    Q_PROPERTY(int pageCount READ pageCount NOTIFY pageCountChanged)
    Q_PROPERTY(bool canGoToPreviousPage READ canGoToPreviousPage NOTIFY canGoToPreviousPageChanged)
    Q_PROPERTY(bool canGoToNextPage READ canGoToNextPage NOTIFY canGoToNextPageChanged)

public:
    explicit QPdfPageNavigation(QObject *parent = nullptr);
    ~QPdfPageNavigation();

    QPdfDocument* document() const;
    void setDocument(QPdfDocument *document);

    int currentPage() const;
    void setCurrentPage(int currentPage);

    int pageCount() const;

    bool canGoToPreviousPage() const;
    bool canGoToNextPage() const;

public Q_SLOTS:
    void goToPreviousPage();
    void goToNextPage();

Q_SIGNALS:
    void documentChanged(QPdfDocument *document);
    void currentPageChanged(int currentPage);
    void pageCountChanged(int pageCount);
    void canGoToPreviousPageChanged(bool canGo);
    void canGoToNextPageChanged(bool canGo);

private:
    Q_DECLARE_PRIVATE(QPdfPageNavigation)
};

QT_END_NAMESPACE

#endif