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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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
** the names of its contributors may be used to endorse or promote
** products derived from this software without specific prior written
** permission.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
** $QT_END_LICENSE$
**
****************************************************************************/
#include "paintedwindow.h"
#include <QOpenGLContext>
#include <QOpenGLPaintDevice>
#include <QPainter>
#include <QTimer>
#include <qmath.h>
PaintedWindow::PaintedWindow()
{
QSurfaceFormat format;
format.setStencilBufferSize(8);
format.setSamples(4);
setSurfaceType(QWindow::OpenGLSurface);
setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint | Qt::WindowCloseButtonHint);
setFormat(format);
create();
m_context = new QOpenGLContext(this);
m_context->setFormat(format);
m_context->create();
}
void PaintedWindow::resizeEvent(QResizeEvent *)
{
paint();
}
void PaintedWindow::exposeEvent(QExposeEvent *)
{
paint();
}
void PaintedWindow::paint()
{
m_context->makeCurrent(this);
QPainterPath path;
path.addEllipse(0, 0, width(), height());
QOpenGLPaintDevice device(size());
QPainter painter(&device);
painter.fillRect(0, 0, width(), height(), Qt::white);
painter.setRenderHint(QPainter::Antialiasing);
painter.fillPath(path, Qt::blue);
painter.end();
m_context->swapBuffers(this);
}
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