/usr/include/poppler/cpp/poppler-page-transition.h is in libpoppler-cpp-dev 0.62.0-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82  | /*
 * Copyright (C) 2009, Pino Toscano <pino@kde.org>
 *
 * 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, or (at your option)
 * any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
 */
#ifndef POPPLER_PAGE_TRANSITION_H
#define POPPLER_PAGE_TRANSITION_H
#include "poppler-global.h"
class Object;
namespace poppler
{
class page;
class page_transition_private;
class POPPLER_CPP_EXPORT page_transition
{
public:
    enum type_enum {
        replace = 0,
        split,
        blinds,
        box,
        wipe,
        dissolve,
        glitter,
        fly,
        push,
        cover,
        uncover,
        fade
    };
    enum alignment_enum {
        horizontal = 0,
        vertical
    };
    enum direction_enum {
        inward = 0,
        outward
    };
    page_transition(const page_transition &pt);
    ~page_transition();
    type_enum type() const;
    int duration() const;
    alignment_enum alignment() const;
    direction_enum direction() const;
    int angle() const;
    double scale() const;
    bool is_rectangular() const;
    page_transition& operator=(const page_transition &pt);
private:
    page_transition(Object *params);
    page_transition_private *d;
    friend class page;
};
}
#endif
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