okular/core/page_p.h

/***************************************************************************
 *   Copyright (C) 2004 by Enrico Ros <eros.kde@email.it>                  *
 *   Copyright (C) 2007 by Pino Toscano <pino@kde.org>                     *
 *   Copyright (C) 2017    Klarälvdalens Datakonsult AB, a KDAB Group      *
 *                         company, info@kdab.com. Work sponsored by the   *
 *                         LiMux project of the city of Munich             *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#ifndef _OKULAR_PAGE_PRIVATE_H_
#define _OKULAR_PAGE_PRIVATE_H_

// qt/kde includes
#include <QLinkedList>
#include <QMap>
#include <QString>
#include <QTransform>
#include <qdom.h>

// local includes
#include "area.h"
#include "global.h"

class QColor;

namespace Okular
{
class Action;
class Annotation;
class DocumentObserver;
class DocumentPrivate;
class FormField;
class HighlightAreaRect;
class Page;
class PageSize;
class PageTransition;
class RotationJob;
class TextPage;
class TilesManager;

enum PageItem {
    None = 0,
    AnnotationPageItems = 0x01,
    FormFieldPageItems = 0x02,
    AllPageItems = 0xff,

    /* If set along with AnnotationPageItems, tells saveLocalContents to save
     * the original annotations (if any) instead of the modified ones */
    OriginalAnnotationPageItems = 0x100,

    /* If set along with FormFieldPageItems, tells saveLocalContents to save
     * the original form contents (if any) instead of the modified one */
    OriginalFormFieldPageItems = 0x200
};
Q_DECLARE_FLAGS(PageItems, PageItem)

class PagePrivate
{
public:
    PagePrivate(Page *page, uint n, double w, double h, Rotation o);
    ~PagePrivate();

    static PagePrivate *get(Page *page);

    void imageRotationDone(RotationJob *job);
    QTransform rotationMatrix() const;

    /**
     * Loads the local contents (e.g. annotations) of the page.
     */
    bool restoreLocalContents(const QDomNode &pageNode);

    /**
     * Saves the local contents (e.g. annotations) of the page.
     */
    void saveLocalContents(QDomNode &parentNode, QDomDocument &document, PageItems what = AllPageItems) const;

    /**
     * Rotates the image and object rects of the page to the given @p orientation.
     */
    void rotateAt(Rotation orientation);

    /**
     * Changes the size of the page to the given @p size.
     *
     * The @p size is meant to be referred to the page not rotated.
     */
    void changeSize(const PageSize &size);

    /**
     * Clears current text selection highlight areas,
     * creates new ones if @p r is not nullptr,
     * and deletes @p r.
     *
     * @param r Areas of new text selections.
     * @param color Color of new text selections.
     */
    void setTextSelections(RegularAreaRect *r, const QColor &color);

    /**
     * Sets the @p color and @p rect of the highlight for the observer with
     * the given @p id.
     */
    void setHighlight(int id, RegularAreaRect *rect, const QColor &color);

    /**
     * Deletes all highlight objects for the observer with the given @p id.
     */
    void deleteHighlights(int id = -1);

    /**
     * Deletes all text selection objects of the page.
     */
    void deleteTextSelections();

    /**
     * Get the tiles manager for the tiled @p observer
     */
    TilesManager *tilesManager(const DocumentObserver *observer) const;

    /**
     * Set the tiles manager for the tiled @p observer
     */
    void setTilesManager(const DocumentObserver *observer, TilesManager *tm);

    /**
     * Moves contents that are generated from oldPage to this. And clears them from page
     * so it can be deleted fine.
     */
    void adoptGeneratedContents(PagePrivate *oldPage);

    /*
     * Tries to find an equivalent form field to oldField by looking into the rect, type and name
     */
    OKULARCORE_EXPORT static FormField *findEquivalentForm(const Page *p, FormField *oldField);

    void setPixmap(DocumentObserver *observer, QPixmap *pixmap, const NormalizedRect &rect, bool isPartialPixmap);

    class PixmapObject
    {
    public:
        QPixmap *m_pixmap = nullptr;
        Rotation m_rotation;
        bool m_isPartialPixmap = false;
    };
    QMap<DocumentObserver *, PixmapObject> m_pixmaps;
    QMap<const DocumentObserver *, TilesManager *> m_tilesManagers;

    Page *m_page;
    int m_number;
    Rotation m_orientation;
    double m_width, m_height;
    DocumentPrivate *m_doc;
    NormalizedRect m_boundingBox;
    Rotation m_rotation;

    TextPage *m_text;
    PageTransition *m_transition;
    HighlightAreaRect *m_textSelections;
    QLinkedList<FormField *> formfields;
    Action *m_openingAction;
    Action *m_closingAction;
    double m_duration;
    QString m_label;

    bool m_isBoundingBoxKnown : 1;
    QDomDocument restoredLocalAnnotationList; // <annotationList>...</annotationList>
    QDomDocument restoredFormFieldList;       // <forms>...</forms>
};

}

Q_DECLARE_OPERATORS_FOR_FLAGS(Okular::PageItems)

#endif