Qt 4.8
qbmphandler_p.h
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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 
61 
62 struct BMP_FILEHDR { // BMP file header
63  char bfType[2]; // "BM"
64  qint32 bfSize; // size of file
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 
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 {
106  };
110  int startpos;
111 };
112 
114 
115 #endif // QT_NO_IMAGEFORMAT_BMP
116 
117 #endif // QBMPHANDLER_P_H
The QVariant class acts like a union for the most common Qt data types.
Definition: qvariant.h:92
qint32 bfOffBits
Definition: qbmphandler_p.h:67
Error
Definition: qaudio.h:58
char bfType[2]
Definition: qbmphandler_p.h:63
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
int qint32
Definition: qglobal.h:937
qint32 biSize
Definition: qbmphandler_p.h:71
The QByteArray class provides an array of bytes.
Definition: qbytearray.h:135
qint32 bfSize
Definition: qbmphandler_p.h:64
qint32 biSizeImage
Definition: qbmphandler_p.h:77
qint32 biClrUsed
Definition: qbmphandler_p.h:80
qint32 biWidth
Definition: qbmphandler_p.h:72
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
qint32 biYPelsPerMeter
Definition: qbmphandler_p.h:79
ImageOption
This enum describes the different options supported by QImageIOHandler.
const char * name
short qint16
Definition: qglobal.h:935
The QImage class provides a hardware-independent image representation that allows direct access to th...
Definition: qimage.h:87
The State element defines configurations of objects and properties.
qint16 biBitCount
Definition: qbmphandler_p.h:75
BMP_INFOHDR infoHeader
qint16 bfReserved1
Definition: qbmphandler_p.h:65
The QImageIOHandler class defines the common image I/O interface for all image formats in Qt...
qint16 bfReserved2
Definition: qbmphandler_p.h:66
qint32 biCompression
Definition: qbmphandler_p.h:76
qint32 biClrImportant
Definition: qbmphandler_p.h:81
BMP_FILEHDR fileHeader
The QIODevice class is the base interface class of all I/O devices in Qt.
Definition: qiodevice.h:66
qint32 biXPelsPerMeter
Definition: qbmphandler_p.h:78
qint16 biPlanes
Definition: qbmphandler_p.h:74
qint32 biHeight
Definition: qbmphandler_p.h:73