be15856f61
Change copyrights and license headers from Nokia to Digia Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e Reviewed-by: Lars Knoll <lars.knoll@digia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** 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 Digia Plc 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 <QtWidgets>
|
|
#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]
|