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qsurface.cpp

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

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

5 ** -

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

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8 ** $QT_BEGIN_LICENSE:LGPL$ -

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25 ** GNU General Public License Usage -

26 ** Alternatively, this file may be used under the terms of the GNU -

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28 ** Public license version 3 or any later version approved by the KDE Free -

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34 ** https://www.gnu.org/licenses/gpl-3.0.html. -

35 ** -

36 ** $QT_END_LICENSE$ -

37 ** -

38 ****************************************************************************/ -

39 -

40 #include "qsurface.h" -

41 #include "qopenglcontext.h" -

42 -

43 QT_BEGIN_NAMESPACE -

44 -

45 -

46 /*! -

47 \class QSurface -

48 \inmodule QtGui -

49 \since 5.0 -

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

51 -

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

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

54 */ -

55 -

56 -

57 /*! -

58 \enum QSurface::SurfaceClass -

59 -

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

61 -

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

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

64 */ -

65 -

66 -

67 /*! -

68 \enum QSurface::SurfaceType -

69 -

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

71 -

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

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

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

75 in conjunction with QOpenGLContext. -

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

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

78 requires the use of private API. -

79 */ -

80 -

81 -

82 /*! -

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

84 -

85 Returns the format of the surface. -

86 */ -

87 -

88 /*! -

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

90 conjunction with QOpenGLContext; otherwise returns false. -

91 -

92 \since 5.3 -

93 */ -

94 -

95 bool QSurface::supportsOpenGL() const -

96 { -

97 SurfaceType type = surfaceType(); -

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

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

99 } -

100 -

101 /*! -

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

103 -

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

105 */ -

106 -

107 /*! -

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

109 -

110 Returns the type of the surface. -

111 */ -

112 -

113 /*! -

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

115 -

116 Returns the size of the surface in pixels. -

117 */ -

118 -

119 /*! -

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

121 */ -

122 QSurface::QSurface(SurfaceClass type) -

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

124 { -

125

}

never executed: end of block

126 -

127 /*! -

128 Destroys the surface. -

129 */ -

130 QSurface::~QSurface() -

131 { -

132 #ifndef QT_NO_OPENGL -

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

134

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

context	Description
TRUE	never evaluated
FALSE	never evaluated

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

135

context->doneCurrent();

never executed: context->doneCurrent();

136 #endif -

137

}

never executed: end of block

138 -

139 /*! -

140 Returns the surface class of this surface. -

141 */ -

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

143 { -

144

return m_type;

never executed: return m_type;

145 } -

146 -

147 QT_END_NAMESPACE -

148 -

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