Qt 4.8
qvolatileimage_p.h
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41 
42 #ifndef QVOLATILEIMAGE_P_H
43 #define QVOLATILEIMAGE_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/qimage.h>
57 #include <QtCore/qshareddata.h>
58 
60 
61 class QVolatileImageData;
62 
64 {
65 public:
67  QVolatileImage(int w, int h, QImage::Format format);
68  explicit QVolatileImage(const QImage &sourceImage);
69  explicit QVolatileImage(void *nativeImage, void *nativeMask = 0);
70  QVolatileImage(const QVolatileImage &other);
71  ~QVolatileImage();
72  QVolatileImage &operator=(const QVolatileImage &rhs);
73 
74  bool paintingActive() const;
75  bool isNull() const;
76  QImage::Format format() const;
77  int width() const;
78  int height() const;
79  int bytesPerLine() const;
80  int byteCount() const;
81  int depth() const;
82  bool hasAlphaChannel() const;
83  void beginDataAccess() const;
84  void endDataAccess(bool readOnly = false) const;
85  uchar *bits();
86  const uchar *constBits() const;
87  bool ensureFormat(QImage::Format format);
88  QImage toImage() const;
89  QImage &imageRef();
90  const QImage &constImageRef() const;
91  QPaintEngine *paintEngine();
92  void setAlphaChannel(const QPixmap &alphaChannel);
93  void fill(uint pixelValue);
94  void *duplicateNativeImage() const;
95  void copyFrom(QVolatileImage *source, const QRect &rect);
96 
97 private:
99 };
100 
102 
103 #endif // QVOLATILEIMAGE_P_H
Format
The following image formats are available in Qt.
Definition: qimage.h:91
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define Q_GUI_EXPORT
Definition: qglobal.h:1450
unsigned char uchar
Definition: qglobal.h:994
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The QImage class provides a hardware-independent image representation that allows direct access to th...
Definition: qimage.h:87
unsigned int uint
Definition: qglobal.h:996
QSharedDataPointer< QVolatileImageData > d
The QPaintEngine class provides an abstract definition of how QPainter draws to a given device on a g...
Definition: qpaintengine.h:90
The QRect class defines a rectangle in the plane using integer precision.
Definition: qrect.h:58
The QPixmap class is an off-screen image representation that can be used as a paint device...
Definition: qpixmap.h:71
static bool isNull(const QVariant::Private *d)
Definition: qvariant.cpp:300