| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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| 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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| 6 | **
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| 7 | ** This file is part of the QtGui module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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| 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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| 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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| 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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| 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #ifndef QBMPHANDLER_P_H
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| 43 | #define QBMPHANDLER_P_H
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| 44 |
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| 45 | //
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| 46 | // W A R N I N G
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| 47 | // -------------
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| 48 | //
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| 49 | // This file is not part of the Qt API. It exists purely as an
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| 50 | // implementation detail. This header file may change from version to
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| 51 | // version without notice, or even be removed.
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| 52 | //
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| 53 | // We mean it.
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| 54 | //
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| 55 |
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| 56 | #include "QtGui/qimageiohandler.h"
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| 57 |
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| 58 | #ifndef QT_NO_IMAGEFORMAT_BMP
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| 59 |
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| 60 | QT_BEGIN_NAMESPACE
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| 61 |
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| 62 | struct BMP_FILEHDR { // BMP file header
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| 63 | char bfType[2]; // "BM"
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| 64 | qint32 bfSize; // size of file
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| 65 | qint16 bfReserved1;
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| 66 | qint16 bfReserved2;
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| 67 | qint32 bfOffBits; // pointer to the pixmap bits
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| 68 | };
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| 69 |
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| 70 | struct BMP_INFOHDR { // BMP information header
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| 71 | qint32 biSize; // size of this struct
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| 72 | qint32 biWidth; // pixmap width
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| 73 | qint32 biHeight; // pixmap height
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| 74 | qint16 biPlanes; // should be 1
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| 75 | qint16 biBitCount; // number of bits per pixel
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| 76 | qint32 biCompression; // compression method
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| 77 | qint32 biSizeImage; // size of image
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| 78 | qint32 biXPelsPerMeter; // horizontal resolution
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| 79 | qint32 biYPelsPerMeter; // vertical resolution
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| 80 | qint32 biClrUsed; // number of colors used
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| 81 | qint32 biClrImportant; // number of important colors
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| 82 | };
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| 83 |
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| 84 | class QBmpHandler : public QImageIOHandler
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| 85 | {
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| 86 | public:
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| 87 | QBmpHandler();
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| 88 | bool canRead() const;
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| 89 | bool read(QImage *image);
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| 90 | bool write(const QImage &image);
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| 91 |
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| 92 | QByteArray name() const;
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| 93 |
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| 94 | static bool canRead(QIODevice *device);
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| 95 |
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| 96 | QVariant option(ImageOption option) const;
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| 97 | void setOption(ImageOption option, const QVariant &value);
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| 98 | bool supportsOption(ImageOption option) const;
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| 99 |
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| 100 | private:
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| 101 | bool readHeader();
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| 102 | enum State {
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| 103 | Ready,
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| 104 | ReadHeader,
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| 105 | Error
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| 106 | };
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| 107 | State state;
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| 108 | BMP_FILEHDR fileHeader;
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| 109 | BMP_INFOHDR infoHeader;
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| 110 | int startpos;
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| 111 | };
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| 112 |
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| 113 | QT_END_NAMESPACE
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| 114 |
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| 115 | #endif // QT_NO_IMAGEFORMAT_BMP
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| 116 |
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| 117 | #endif // QBMPHANDLER_P_H
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