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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 QtOpenGL 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 #include <QtGui/QPaintDevice> |
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43 #include <QtGui/QWidget> |
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44 #include <QtOpenGL/QGLWidget> |
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45 #include "private/qglwindowsurface_qws_p.h" |
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46 #include "private/qpaintengine_opengl_p.h" |
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47 |
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48 QT_BEGIN_NAMESPACE |
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49 |
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50 /*! |
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51 \class QWSGLWindowSurface |
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52 \since 4.3 |
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53 \ingroup qws |
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54 \preliminary |
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55 |
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56 \brief The QWSGLWindowSurface class provides the drawing area for top-level |
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57 windows with Qt for Embedded Linux on EGL/OpenGL ES. It also provides the |
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58 drawing area for \l{QGLWidget}s whether they are top-level windows or |
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59 children of another QWidget. |
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60 |
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61 Note that this class is only available in Qt for Embedded Linux and only |
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62 available if Qt is configured with OpenGL support. |
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63 */ |
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64 |
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65 class QWSGLWindowSurfacePrivate |
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66 { |
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67 public: |
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68 QWSGLWindowSurfacePrivate() : |
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69 qglContext(0), ownsContext(false) {} |
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70 |
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71 QGLContext *qglContext; |
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72 bool ownsContext; |
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73 }; |
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74 |
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75 /*! |
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76 Constructs an empty QWSGLWindowSurface for the given top-level \a window. |
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77 The window surface is later initialized from chooseContext() and resources for it |
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78 is typically allocated in setGeometry(). |
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79 */ |
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80 QWSGLWindowSurface::QWSGLWindowSurface(QWidget *window) |
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81 : QWSWindowSurface(window), |
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82 d_ptr(new QWSGLWindowSurfacePrivate) |
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83 { |
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84 } |
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85 |
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86 /*! |
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87 Constructs an empty QWSGLWindowSurface. |
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88 */ |
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89 QWSGLWindowSurface::QWSGLWindowSurface() |
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90 : d_ptr(new QWSGLWindowSurfacePrivate) |
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91 { |
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92 } |
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93 |
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94 /*! |
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95 Destroys the QWSGLWindowSurface object and frees any |
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96 allocated resources. |
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97 */ |
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98 QWSGLWindowSurface::~QWSGLWindowSurface() |
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99 { |
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100 Q_D(QWSGLWindowSurface); |
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101 if (d->ownsContext) |
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102 delete d->qglContext; |
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103 delete d; |
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104 } |
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105 |
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106 /*! |
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107 Returns the QGLContext of the window surface. |
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108 */ |
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109 QGLContext *QWSGLWindowSurface::context() const |
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110 { |
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111 Q_D(const QWSGLWindowSurface); |
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112 if (!d->qglContext) { |
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113 QWSGLWindowSurface *that = const_cast<QWSGLWindowSurface*>(this); |
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114 that->setContext(new QGLContext(QGLFormat::defaultFormat())); |
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115 that->d_func()->ownsContext = true; |
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116 } |
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117 return d->qglContext; |
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118 } |
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119 |
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120 /*! |
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121 Sets the QGLContext for this window surface to \a context. |
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122 */ |
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123 void QWSGLWindowSurface::setContext(QGLContext *context) |
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124 { |
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125 Q_D(QWSGLWindowSurface); |
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126 if (d->ownsContext) { |
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127 delete d->qglContext; |
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128 d->ownsContext = false; |
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129 } |
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130 d->qglContext = context; |
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131 } |
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132 |
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133 QT_END_NAMESPACE |