10 files changed, 654 insertions, 0 deletions
diff --git a/examples/opengl/2dpainting/2dpainting.pro b/examples/opengl/2dpainting/2dpainting.pro
new file mode 100644
index 0000000000..120d6e4986
--- /dev/null
+++ b/examples/opengl/2dpainting/2dpainting.pro
@@ -0,0 +1,19 @@
+QT          += opengl
+
+HEADERS     = glwidget.h \
+              helper.h \
+              widget.h \
+              window.h
+SOURCES     = glwidget.cpp \
+              helper.cpp \
+              main.cpp \
+              widget.cpp \
+              window.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/qtbase/opengl/2dpainting
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS 2dpainting.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/qtbase/opengl/2dpainting
+INSTALLS += target sources
+
+symbian: include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)
diff --git a/examples/opengl/2dpainting/glwidget.cpp b/examples/opengl/2dpainting/glwidget.cpp
new file mode 100644
index 0000000000..8b28a6e6a3
--- /dev/null
+++ b/examples/opengl/2dpainting/glwidget.cpp
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** 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 <QtGui>
+#include "glwidget.h"
+#include "helper.h"
+
+//! [0]
+GLWidget::GLWidget(Helper *helper, QWidget *parent)
+    : QGLWidget(QGLFormat(QGL::SampleBuffers), parent), helper(helper)
+{
+    elapsed = 0;
+    setFixedSize(200, 200);
+    setAutoFillBackground(false);
+}
+//! [0]
+
+//! [1]
+void GLWidget::animate()
+{
+    elapsed = (elapsed + qobject_cast<QTimer*>(sender())->interval()) % 1000;
+    repaint();
+}
+//! [1]
+
+//! [2]
+void GLWidget::paintEvent(QPaintEvent *event)
+{
+    QPainter painter;
+    painter.begin(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    helper->paint(&painter, event, elapsed);
+    painter.end();
+}
+//! [2]
diff --git a/examples/opengl/2dpainting/glwidget.h b/examples/opengl/2dpainting/glwidget.h
new file mode 100644
index 0000000000..c012960f31
--- /dev/null
+++ b/examples/opengl/2dpainting/glwidget.h
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef GLWIDGET_H
+#define GLWIDGET_H
+
+#include <QGLWidget>
+
+//! [0]
+class Helper;
+QT_BEGIN_NAMESPACE
+class QPaintEvent;
+class QWidget;
+QT_END_NAMESPACE
+
+class GLWidget : public QGLWidget
+{
+    Q_OBJECT
+
+public:
+    GLWidget(Helper *helper, QWidget *parent);
+
+public slots:
+    void animate();
+
+protected:
+    void paintEvent(QPaintEvent *event);
+
+private:
+    Helper *helper;
+    int elapsed;
+};
+//! [0]
+
+#endif
diff --git a/examples/opengl/2dpainting/helper.cpp b/examples/opengl/2dpainting/helper.cpp
new file mode 100644
index 0000000000..662a4264a7
--- /dev/null
+++ b/examples/opengl/2dpainting/helper.cpp
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** 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 <QtGui>
+#include "helper.h"
+
+//! [0]
+Helper::Helper()
+{
+    QLinearGradient gradient(QPointF(50, -20), QPointF(80, 20));
+    gradient.setColorAt(0.0, Qt::white);
+    gradient.setColorAt(1.0, QColor(0xa6, 0xce, 0x39));
+
+    background = QBrush(QColor(64, 32, 64));
+    circleBrush = QBrush(gradient);
+    circlePen = QPen(Qt::black);
+    circlePen.setWidth(1);
+    textPen = QPen(Qt::white);
+    textFont.setPixelSize(50);
+}
+//! [0]
+
+//! [1]
+void Helper::paint(QPainter *painter, QPaintEvent *event, int elapsed)
+{
+    painter->fillRect(event->rect(), background);
+    painter->translate(100, 100);
+//! [1]
+
+//! [2]
+    painter->save();
+    painter->setBrush(circleBrush);
+    painter->setPen(circlePen);
+    painter->rotate(elapsed * 0.030);
+
+    qreal r = elapsed/1000.0;
+    int n = 30;
+    for (int i = 0; i < n; ++i) {
+        painter->rotate(30);
+        qreal radius = 0 + 120.0*((i+r)/n);
+        qreal circleRadius = 1 + ((i+r)/n)*20;
+        painter->drawEllipse(QRectF(radius, -circleRadius,
+                                    circleRadius*2, circleRadius*2));
+    }
+    painter->restore();
+//! [2]
+
+//! [3]
+    painter->setPen(textPen);
+    painter->setFont(textFont);
+    painter->drawText(QRect(-50, -50, 100, 100), Qt::AlignCenter, "Qt");
+}
+//! [3]
diff --git a/examples/opengl/2dpainting/helper.h b/examples/opengl/2dpainting/helper.h
new file mode 100644
index 0000000000..380399fa50
--- /dev/null
+++ b/examples/opengl/2dpainting/helper.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef HELPER_H
+#define HELPER_H
+
+#include <QBrush>
+#include <QFont>
+#include <QPen>
+
+QT_BEGIN_NAMESPACE
+class QPainter;
+class QPaintEvent;
+QT_END_NAMESPACE
+
+//! [0]
+class Helper
+{
+public:
+    Helper();
+
+public:
+    void paint(QPainter *painter, QPaintEvent *event, int elapsed);
+
+private:
+    QBrush background;
+    QBrush circleBrush;
+    QFont textFont;
+    QPen circlePen;
+    QPen textPen;
+};
+//! [0]
+
+#endif
diff --git a/examples/opengl/2dpainting/main.cpp b/examples/opengl/2dpainting/main.cpp
new file mode 100644
index 0000000000..aedfd9f8d3
--- /dev/null
+++ b/examples/opengl/2dpainting/main.cpp
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** 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 <QApplication>
+#include "window.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    Window window;
+    window.show();
+    return app.exec();
+}
diff --git a/examples/opengl/2dpainting/widget.cpp b/examples/opengl/2dpainting/widget.cpp
new file mode 100644
index 0000000000..16398147c7
--- /dev/null
+++ b/examples/opengl/2dpainting/widget.cpp
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** 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 <QtGui>
+#include "widget.h"
+#include "helper.h"
+
+
+//! [0]
+Widget::Widget(Helper *helper, QWidget *parent)
+    : QWidget(parent), helper(helper)
+{
+    elapsed = 0;
+    setFixedSize(200, 200);
+}
+//! [0]
+
+//! [1]
+void Widget::animate()
+{
+    elapsed = (elapsed + qobject_cast<QTimer*>(sender())->interval()) % 1000;
+    repaint();
+}
+//! [1]
+
+//! [2]
+void Widget::paintEvent(QPaintEvent *event)
+{
+    QPainter painter;
+    painter.begin(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    helper->paint(&painter, event, elapsed);
+    painter.end();
+}
+//! [2]
diff --git a/examples/opengl/2dpainting/widget.h b/examples/opengl/2dpainting/widget.h
new file mode 100644
index 0000000000..7a67aaf1bf
--- /dev/null
+++ b/examples/opengl/2dpainting/widget.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WIDGET_H
+#define WIDGET_H
+
+#include <QWidget>
+
+//! [0]
+class Helper;
+QT_BEGIN_NAMESPACE
+class QPaintEvent;
+QT_END_NAMESPACE
+
+class Widget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Widget(Helper *helper, QWidget *parent);
+
+public slots:
+    void animate();
+
+protected:
+    void paintEvent(QPaintEvent *event);
+
+private:
+    Helper *helper;
+    int elapsed;
+};
+//! [0]
+
+#endif
diff --git a/examples/opengl/2dpainting/window.cpp b/examples/opengl/2dpainting/window.cpp
new file mode 100644
index 0000000000..d2c8ef706c
--- /dev/null
+++ b/examples/opengl/2dpainting/window.cpp
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** 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 <QtGui>
+#include "glwidget.h"
+#include "widget.h"
+#include "window.h"
+
+//! [0]
+Window::Window()
+    : QWidget()
+{
+    Widget *native = new Widget(&helper, this);
+    GLWidget *openGL = new GLWidget(&helper, this);
+    QLabel *nativeLabel = new QLabel(tr("Native"));
+    nativeLabel->setAlignment(Qt::AlignHCenter);
+    QLabel *openGLLabel = new QLabel(tr("OpenGL"));
+    openGLLabel->setAlignment(Qt::AlignHCenter);
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(native, 0, 0);
+    layout->addWidget(openGL, 0, 1);
+    layout->addWidget(nativeLabel, 1, 0);
+    layout->addWidget(openGLLabel, 1, 1);
+    setLayout(layout);
+
+    QTimer *timer = new QTimer(this);
+    connect(timer, SIGNAL(timeout()), native, SLOT(animate()));
+    connect(timer, SIGNAL(timeout()), openGL, SLOT(animate()));
+    timer->start(50);
+
+    setWindowTitle(tr("2D Painting on Native and OpenGL Widgets"));
+}
+//! [0]
diff --git a/examples/opengl/2dpainting/window.h b/examples/opengl/2dpainting/window.h
new file mode 100644
index 0000000000..0f983d20ac
--- /dev/null
+++ b/examples/opengl/2dpainting/window.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+**
+** 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."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include <QWidget>
+
+#include "helper.h"
+
+QT_BEGIN_NAMESPACE
+class QLabel;
+class QWidget;
+QT_END_NAMESPACE
+
+//! [0]
+class Window : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Window();
+
+private:
+    Helper helper;
+};
+//! [0]
+
+#endif