qsurface.cpp

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1 /**************************************************************************** -

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4 ** Contact: http://www.qt.io/licensing/ -

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6 ** This file is part of the QtGui module of the Qt Toolkit. -

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8 ** $QT_BEGIN_LICENSE:LGPL21$ -

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28 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -

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30 ** $QT_END_LICENSE$ -

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32 ****************************************************************************/ -

33 -

34 #include "qsurface.h" -

35 #include "qopenglcontext.h" -

36 -

37 QT_BEGIN_NAMESPACE -

38 -

39 -

40 /*! -

41 \class QSurface -

42 \inmodule QtGui -

43 \since 5.0 -

44 \brief The QSurface class is an abstraction of renderable surfaces in Qt. -

45 -

46 The size of the surface is accessible with the size() function. The rendering -

47 specific attributes of the surface are accessible through the format() function. -

48 */ -

49 -

50 -

51 /*! -

52 \enum QSurface::SurfaceClass -

53 -

54 The SurfaceClass enum describes the actual subclass of the surface. -

55 -

56 \value Window The surface is an instance of QWindow. -

57 \value Offscreen The surface is an instance of QOffscreenSurface. -

58 */ -

59 -

60 -

61 /*! -

62 \enum QSurface::SurfaceType -

63 -

64 The SurfaceType enum describes what type of surface this is. -

65 -

66 \value RasterSurface The surface is is composed of pixels and can be rendered to using -

67 a software rasterizer like Qt's raster paint engine. -

68 \value OpenGLSurface The surface is an OpenGL compatible surface and can be used -

69 in conjunction with QOpenGLContext. -

70 \value RasterGLSurface The surface can be rendered to using a software rasterizer, -

71 and also supports OpenGL. This surface type is intended for internal Qt use, and -

72 requires the use of private API. -

73 */ -

74 -

75 -

76 /*! -

77 \fn QSurfaceFormat QSurface::format() const -

78 -

79 Returns the format of the surface. -

80 */ -

81 -

82 /*! -

83 Returns true if the surface is OpenGL compatible and can be used in -

84 conjunction with QOpenGLContext; otherwise returns false. -

85 -

86 \since 5.3 -

87 */ -

88 -

89 bool QSurface::supportsOpenGL() const -

90 { -

91 SurfaceType type = surfaceType(); -

return type == OpenGLSurface || type == RasterGLSurface;

never executed: return type == OpenGLSurface || type == RasterGLSurface;

type == OpenGLSurface	Description
TRUE	never evaluated
FALSE	never evaluated

type == RasterGLSurface	Description
TRUE	never evaluated
FALSE	never evaluated

93 } -

94 -

95 /*! -

96 \fn QPlatformSurface *QSurface::surfaceHandle() const -

97 -

98 Returns a handle to the platform-specific implementation of the surface. -

99 */ -

100 -

101 /*! -

102 \fn SurfaceType QSurface::surfaceType() const -

103 -

104 Returns the type of the surface. -

105 */ -

106 -

107 /*! -

108 \fn QSize QSurface::size() const -

109 -

110 Returns the size of the surface in pixels. -

111 */ -

112 -

113 /*! -

114 Creates a surface with the given \a type. -

115 */ -

116 QSurface::QSurface(SurfaceClass type) -

117 : m_type(type), m_reserved(0) -

118 { -

119

}

never executed: end of block

120 -

121 /*! -

122 Destroys the surface. -

123 */ -

124 QSurface::~QSurface() -

125 { -

126 #ifndef QT_NO_OPENGL -

127 QOpenGLContext *context = QOpenGLContext::currentContext(); -

128

if (context && context->surface() == this)

context	Description
TRUE	never evaluated
FALSE	never evaluated

context->surface() == this	Description
TRUE	never evaluated
FALSE	never evaluated

129

context->doneCurrent();

never executed: context->doneCurrent();

130 #endif -

131

}

never executed: end of block

132 -

133 /*! -

134 Returns the surface class of this surface. -

135 */ -

136 QSurface::SurfaceClass QSurface::surfaceClass() const -

137 { -

138

return m_type;

never executed: return m_type;

139 } -

140 -

141 QT_END_NAMESPACE -

142 -

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