UltraCoder/speex-webrtc-test
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Use three colors in volume meter

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This commit is contained in:
Kirill Kirilenko 2020-11-11 17:30:18 +03:00
parent d947c525c6
commit 60b927a412
1 changed files with 20 additions and 6 deletions
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26
src/AudioLevel.cpp
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@ -52,6 +52,7 @@
#include <QDebug>
#include <QPainter>
#include <QtMath>
namespace SpeexWebRTCTest {
@ -75,14 +76,27 @@ void AudioLevel::paintEvent(QPaintEvent* event)
Q_UNUSED(event);
const float maxLevel = 0;
const float minLevel = -60;
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);
// draw level
qreal heightLevel = (level_ - minLevel) / (maxLevel - minLevel) * height();
painter.fillRect(0, height() - heightLevel, width(), heightLevel, QColor(42, 168, 43));
// clear the rest of the control
painter.fillRect(0, 0, width(), height() - heightLevel, Qt::black);
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