summaryrefslogtreecommitdiff
path: root/include/vcl/pngread.hxx
blob: 3954f5cba0ab07e457a228f336939e7d25cd1280 (plain)
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
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#ifndef INCLUDED_VCL_PNGREAD_HXX
#define INCLUDED_VCL_PNGREAD_HXX

#include <vcl/dllapi.h>
#include <vcl/bitmapex.hxx>
#include <vector>

namespace vcl
{

class PNGReaderImpl;

class VCL_DLLPUBLIC PNGReader
{
    std::unique_ptr<PNGReaderImpl> mpImpl;

public:

    /* the PNG chunks are read within the c'tor, so the stream will
    be positioned at the end of the PNG */
    explicit PNGReader(SvStream& rStream);
    ~PNGReader();

    /* an empty preview size hint (=default) will read the whole image
    */
    BitmapEx Read(const Size& i_rPreviewHint = Size());

    // retrieve every chunk that resides inside the PNG
    struct ChunkData
    {
        sal_uInt32 nType;
        std::vector<sal_uInt8> aData;
    };
    const std::vector<ChunkData>& GetChunks() const;

    void SetIgnoreGammaChunk(bool bIgnoreGammaChunk);
};

} // end namespace vcl

#endif // INCLUDED_VCL_PNGREAD_HXX

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */