102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2017 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, 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 The Qt Company Ltd 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 "AudioLevel.h"
|
|
|
|
#include <QDebug>
|
|
#include <QPainter>
|
|
#include <QtMath>
|
|
|
|
namespace SpeexWebRTCTest {
|
|
|
|
AudioLevel::AudioLevel(QWidget* parent) : QWidget(parent)
|
|
{
|
|
setMinimumWidth(30);
|
|
setMaximumWidth(30);
|
|
}
|
|
|
|
void AudioLevel::setLevel(qreal level)
|
|
{
|
|
if (level_ != level)
|
|
{
|
|
level_ = level;
|
|
update();
|
|
}
|
|
}
|
|
|
|
void AudioLevel::paintEvent(QPaintEvent* event)
|
|
{
|
|
Q_UNUSED(event);
|
|
|
|
const float maxLevel = 0;
|
|
const float minLevel = -50;
|
|
const float redLevel = -1;
|
|
const float yellowLevel = -6;
|
|
|
|
const QColor greenColor = QColor(42, 168, 43);
|
|
const QColor yellowColor = "yellow";
|
|
const QColor redColor = "red";
|
|
|
|
QPainter painter(this);
|
|
|
|
auto drawArea = [&](float min, float max, const QColor& color)
|
|
{
|
|
int maxHeight = std::floor((max - minLevel) / (maxLevel - minLevel) * height());
|
|
int minHeight = std::floor((min - minLevel) / (maxLevel - minLevel) * height());
|
|
painter.fillRect(0, height() - maxHeight, width(), maxHeight - minHeight, color);
|
|
};
|
|
|
|
drawArea(minLevel, level_, greenColor);
|
|
drawArea(yellowLevel, level_, yellowColor);
|
|
drawArea(redLevel, level_, redColor);
|
|
drawArea(level_, maxLevel, Qt::black);
|
|
}
|
|
|
|
} // namespace SpeexWebRTCTest
|