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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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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 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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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 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 |