FpsLayer.cpp

// SPDX-License-Identifier: LGPL-2.1-or-later
//
// SPDX-FileCopyrightText: 2006-2009 Torsten Rahn <tackat@kde.org>
// SPDX-FileCopyrightText: 2011, 2012 Bernhard Beschow <bbeschow@cs.tu-berlin.de>
//
 
#include "FpsLayer.h"
 
#include <QElapsedTimer>
#include <QFont>
#include <QPainter>
#include <QPoint>
 
namespace Marble
{
 
FpsLayer::FpsLayer(QElapsedTimer *time)
    : m_time(time)
{
}
 
void FpsLayer::paint(QPainter *painter) const
{
    const qreal fps = 1000.0 / (qreal)(m_time->elapsed());
    const QString fpsString = QStringLiteral("Speed: %1 fps").arg(fps, 5, 'f', 1, QLatin1Char(' '));
 
    const QPoint fpsLabelPos(10, 20);
 
    painter->setFont(QFont(QStringLiteral("Sans Serif"), 10));
 
    painter->setPen(Qt::black);
    painter->setBrush(Qt::black);
    painter->drawText(fpsLabelPos, fpsString);
 
    painter->setPen(Qt::white);
    painter->setBrush(Qt::white);
    painter->drawText(fpsLabelPos.x() - 1, fpsLabelPos.y() - 1, fpsString);
}
 
}