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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtGui/QPaintDevice>
#include <QtGui/QWidget>
#include <QtOpenGL/QGLWidget>
#include "private/qglwindowsurface_qws_p.h"
#include "private/qpaintengine_opengl_p.h"
QT_BEGIN_NAMESPACE
/*!
\class QWSGLWindowSurface
\since 4.3
\ingroup qws
\preliminary
\brief The QWSGLWindowSurface class provides the drawing area for top-level
windows with Qt for Embedded Linux on EGL/OpenGL ES. It also provides the
drawing area for \l{QGLWidget}s whether they are top-level windows or
children of another QWidget.
Note that this class is only available in Qt for Embedded Linux and only
available if Qt is configured with OpenGL support.
*/
class QWSGLWindowSurfacePrivate
{
public:
QWSGLWindowSurfacePrivate() :
qglContext(0), ownsContext(false) {}
QGLContext *qglContext;
bool ownsContext;
};
/*!
Constructs an empty QWSGLWindowSurface for the given top-level \a window.
The window surface is later initialized from chooseContext() and resources for it
is typically allocated in setGeometry().
*/
QWSGLWindowSurface::QWSGLWindowSurface(QWidget *window)
: QWSWindowSurface(window),
d_ptr(new QWSGLWindowSurfacePrivate)
{
}
/*!
Constructs an empty QWSGLWindowSurface.
*/
QWSGLWindowSurface::QWSGLWindowSurface()
: d_ptr(new QWSGLWindowSurfacePrivate)
{
}
/*!
Destroys the QWSGLWindowSurface object and frees any
allocated resources.
*/
QWSGLWindowSurface::~QWSGLWindowSurface()
{
Q_D(QWSGLWindowSurface);
if (d->ownsContext)
delete d->qglContext;
delete d;
}
/*!
Returns the QGLContext of the window surface.
*/
QGLContext *QWSGLWindowSurface::context() const
{
Q_D(const QWSGLWindowSurface);
if (!d->qglContext) {
QWSGLWindowSurface *that = const_cast<QWSGLWindowSurface*>(this);
that->setContext(new QGLContext(QGLFormat::defaultFormat()));
that->d_func()->ownsContext = true;
}
return d->qglContext;
}
/*!
Sets the QGLContext for this window surface to \a context.
*/
void QWSGLWindowSurface::setContext(QGLContext *context)
{
Q_D(QWSGLWindowSurface);
if (d->ownsContext) {
delete d->qglContext;
d->ownsContext = false;
}
d->qglContext = context;
}
QT_END_NAMESPACE
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