1 files changed, 91 insertions, 0 deletions
diff --git a/examples/opengl/2dpainting/helper.cpp b/examples/opengl/2dpainting/helper.cpp
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+++ b/examples/opengl/2dpainting/helper.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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]