poppler/CairoRescaleBox.h

/*
 * Copyright © 2009 Mozilla Corporation
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Mozilla Corporation not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Mozilla Corporation makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * MOZILLA CORPORATION DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
 * SHALL MOZILLA CORPORATION BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 *
 * Author: Jeff Muizelaar, Mozilla Corp.
 */

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2012 Adrian Johnson <ajohnson@redneon.com>
// Copyright (C) 2018 Albert Astals Cid <aacid@kde.org>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#ifndef CAIRO_RESCALE_BOX_H
#define CAIRO_RESCALE_BOX_H

#include <cairo.h>

class CairoRescaleBox
{
public:
    CairoRescaleBox() {};
    virtual ~CairoRescaleBox() {};

    CairoRescaleBox(const CairoRescaleBox &) = delete;
    CairoRescaleBox &operator=(const CairoRescaleBox &) = delete;

    virtual bool downScaleImage(unsigned orig_width, unsigned orig_height, signed scaled_width, signed scaled_height, unsigned short int start_column, unsigned short int start_row, unsigned short int width, unsigned short int height,
                                cairo_surface_t *dest_surface);

    virtual void getRow(int row_num, uint32_t *row_data) = 0;
};

#endif /* CAIRO_RESCALE_BOX_H */