e5fcad3 by Lars Knoll at 2009-03-23 1
/****************************************************************************
2
**
fbc2c44 by Jason McDonald at 2011-01-10 3
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
04e3b30 by Jason McDonald at 2009-09-09 4
** All rights reserved.
858c70f by Jason McDonald at 2009-06-16 5
** Contact: Nokia Corporation (qt-info@nokia.com)
e5fcad3 by Lars Knoll at 2009-03-23 6
**
7
** This file is part of the QtGui module of the Qt Toolkit.
8
**
9
** $QT_BEGIN_LICENSE:LGPL$
10
** No Commercial Usage
11
** This file contains pre-release code and may not be distributed.
12
** You may use this file in accordance with the terms and conditions
309db73 by Jason McDonald at 2009-08-31 13
** contained in the Technology Preview License Agreement accompanying
14
** this package.
e5fcad3 by Lars Knoll at 2009-03-23 15
**
16
** GNU Lesser General Public License Usage
17
** Alternatively, this file may be used under the terms of the GNU Lesser
18
** General Public License version 2.1 as published by the Free Software
19
** Foundation and appearing in the file LICENSE.LGPL included in the
20
** packaging of this file.  Please review the following information to
21
** ensure the GNU Lesser General Public License version 2.1 requirements
22
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23
**
04e3b30 by Jason McDonald at 2009-09-09 24
** In addition, as a special exception, Nokia gives you certain additional
25
** rights.  These rights are described in the Nokia Qt LGPL Exception
26
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
e5fcad3 by Lars Knoll at 2009-03-23 27
**
309db73 by Jason McDonald at 2009-08-31 28
** If you have questions regarding the use of this file, please contact
29
** Nokia at qt-info@nokia.com.
30
**
31
**
32
**
33
**
34
**
35
**
36
**
e5fcad3 by Lars Knoll at 2009-03-23 37
**
38
** $QT_END_LICENSE$
39
**
40
****************************************************************************/
41
42
#ifndef QBMPHANDLER_P_H
43
#define QBMPHANDLER_P_H
44
45
//
46
//  W A R N I N G
47
//  -------------
48
//
49
// This file is not part of the Qt API.  It exists purely as an
50
// implementation detail.  This header file may change from version to
51
// version without notice, or even be removed.
52
//
53
// We mean it.
54
//
55
56
#include "QtGui/qimageiohandler.h"
57
58
#ifndef QT_NO_IMAGEFORMAT_BMP
59
60
QT_BEGIN_NAMESPACE
61
62
struct BMP_FILEHDR {                     // BMP file header
63
    char   bfType[2];                    // "BM"
64
    qint32  bfSize;                      // size of file
65
    qint16  bfReserved1;
66
    qint16  bfReserved2;
67
    qint32  bfOffBits;                   // pointer to the pixmap bits
68
};
69
70
struct BMP_INFOHDR {                     // BMP information header
71
    qint32  biSize;                      // size of this struct
72
    qint32  biWidth;                     // pixmap width
73
    qint32  biHeight;                    // pixmap height
74
    qint16  biPlanes;                    // should be 1
75
    qint16  biBitCount;                  // number of bits per pixel
76
    qint32  biCompression;               // compression method
77
    qint32  biSizeImage;                 // size of image
78
    qint32  biXPelsPerMeter;             // horizontal resolution
79
    qint32  biYPelsPerMeter;             // vertical resolution
80
    qint32  biClrUsed;                   // number of colors used
81
    qint32  biClrImportant;              // number of important colors
82
};
83
84
class QBmpHandler : public QImageIOHandler
85
{
86
public:
87
    QBmpHandler();
88
    bool canRead() const;
89
    bool read(QImage *image);
90
    bool write(const QImage &image);
91
92
    QByteArray name() const;
93
94
    static bool canRead(QIODevice *device);
95
96
    QVariant option(ImageOption option) const;
97
    void setOption(ImageOption option, const QVariant &value);
98
    bool supportsOption(ImageOption option) const;
99
100
private:
101
    bool readHeader();
102
    enum State {
103
        Ready,
104
        ReadHeader,
105
        Error
106
    };
107
    State state;
108
    BMP_FILEHDR fileHeader;
109
    BMP_INFOHDR infoHeader;
110
    int startpos;
111
};
112
113
QT_END_NAMESPACE
114
115
#endif // QT_NO_IMAGEFORMAT_BMP
116
117
#endif // QBMPHANDLER_P_H