qpdfdocument.h

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// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QPDFDOCUMENT_H
#define QPDFDOCUMENT_H
 
#include <QtPdf/qtpdfglobal.h>
 
#include <QtCore/qobject.h>
#include <QtCore/QAbstractListModel>
#include <QtGui/qimage.h>
#include <QtPdf/qpdfdocumentrenderoptions.h>
#include <QtPdf/qpdfselection.h>
 
QT_BEGIN_NAMESPACE
 
class QPdfDocumentPrivate;
class QNetworkReply;
 
class Q_PDF_EXPORT QPdfDocument : public QObject
{
    Q_OBJECT
 
    Q_PROPERTY(int pageCount READ pageCount NOTIFY pageCountChanged FINAL)
    Q_PROPERTY(QString password READ password WRITE setPassword NOTIFY passwordChanged FINAL)
    Q_PROPERTY(Status status READ status NOTIFY statusChanged FINAL)
    Q_PROPERTY(QAbstractListModel* pageModel READ pageModel NOTIFY pageModelChanged FINAL)
 
public:
    enum class Status {
        Null,
        Loading,
        Ready,
        Unloading,
        Error
    };
    Q_ENUM(Status)
 
    enum class Error {
        None,
        Unknown,
        DataNotYetAvailable,
        FileNotFound,
        InvalidFileFormat,
        IncorrectPassword,
        UnsupportedSecurityScheme
    };
    Q_ENUM(Error)
 
    enum class MetaDataField {
        Title,
        Subject,
        Author,
        Keywords,
        Producer,
        Creator,
        CreationDate,
        ModificationDate
    };
    Q_ENUM(MetaDataField)
 
    enum class PageModelRole {
        Label = Qt::UserRole,
        PointSize,
        NRoles
    };
    Q_ENUM(PageModelRole)
 
    QPdfDocument() : QPdfDocument(nullptr) {}
    explicit QPdfDocument(QObject *parent);
    ~QPdfDocument() override;
 
    Error load(const QString &fileName);
 
    Status status() const;
 
    void load(QIODevice *device);
    void setPassword(const QString &password);
    QString password() const;
 
    QVariant metaData(MetaDataField field) const;
 
    Error error() const;
 
    void close();
 
    int pageCount() const;
 
    Q_INVOKABLE QSizeF pagePointSize(int page) const;
 
    Q_INVOKABLE QString pageLabel(int page);
    Q_INVOKABLE int pageIndexForLabel(const QString &label);
 
    QAbstractListModel *pageModel();
 
    QImage render(int page, QSize imageSize, QPdfDocumentRenderOptions options = QPdfDocumentRenderOptions());
 
    Q_INVOKABLE QPdfSelection getSelection(int page, QPointF start, QPointF end);
    Q_INVOKABLE QPdfSelection getSelectionAtIndex(int page, int startIndex, int maxLength);
    Q_INVOKABLE QPdfSelection getAllText(int page);
 
Q_SIGNALS:
    void passwordChanged();
    void passwordRequired();
    void statusChanged(QPdfDocument::Status status);
    void pageCountChanged(int pageCount);
    void pageModelChanged();
 
private:
    friend struct QPdfBookmarkModelPrivate;
    friend class QPdfFile;
    friend class QPdfLinkModelPrivate;
    friend class QPdfPageModel;
    friend class QPdfSearchModel;
    friend class QPdfSearchModelPrivate;
    friend class QQuickPdfSelection;
 
    QString fileName() const;
 
    Q_PRIVATE_SLOT(d, void _q_tryLoadingWithSizeFromContentHeader())
    Q_PRIVATE_SLOT(d, void _q_copyFromSequentialSourceDevice())
    QScopedPointer<QPdfDocumentPrivate> d;
};
 
QT_END_NAMESPACE
 
#endif // QPDFDOCUMENT_H