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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "progressbar.h"
#include "spectrum.h"
#include <QPainter>
ProgressBar::ProgressBar(QWidget *parent)
: QWidget(parent)
, m_bufferLength(0)
, m_recordPosition(0)
, m_playPosition(0)
, m_windowPosition(0)
, m_windowLength(0)
{
setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
setMinimumHeight(30);
#ifdef SUPERIMPOSE_PROGRESS_ON_WAVEFORM
setAutoFillBackground(false);
#endif
}
ProgressBar::~ProgressBar() = default;
void ProgressBar::reset()
{
m_bufferLength = 0;
m_recordPosition = 0;
m_playPosition = 0;
m_windowPosition = 0;
m_windowLength = 0;
update();
}
void ProgressBar::paintEvent(QPaintEvent * /*event*/)
{
QPainter painter(this);
QColor bufferColor(0, 0, 255);
QColor windowColor(0, 255, 0);
#ifdef SUPERIMPOSE_PROGRESS_ON_WAVEFORM
bufferColor.setAlphaF(0.5);
windowColor.setAlphaF(0.5);
#else
painter.fillRect(rect(), Qt::black);
#endif
if (m_bufferLength) {
QRect bar = rect();
const qreal play = qreal(m_playPosition) / m_bufferLength;
bar.setLeft(rect().left() + play * rect().width());
const qreal record = qreal(m_recordPosition) / m_bufferLength;
bar.setRight(rect().left() + record * rect().width());
painter.fillRect(bar, bufferColor);
QRect window = rect();
const qreal windowLeft = qreal(m_windowPosition) / m_bufferLength;
window.setLeft(rect().left() + windowLeft * rect().width());
const qreal windowWidth = qreal(m_windowLength) / m_bufferLength;
window.setWidth(windowWidth * rect().width());
painter.fillRect(window, windowColor);
}
}
void ProgressBar::bufferLengthChanged(qint64 bufferSize)
{
m_bufferLength = bufferSize;
m_recordPosition = 0;
m_playPosition = 0;
m_windowPosition = 0;
m_windowLength = 0;
repaint();
}
void ProgressBar::recordPositionChanged(qint64 recordPosition)
{
Q_ASSERT(recordPosition >= 0);
Q_ASSERT(recordPosition <= m_bufferLength);
m_recordPosition = recordPosition;
repaint();
}
void ProgressBar::playPositionChanged(qint64 playPosition)
{
Q_ASSERT(playPosition >= 0);
Q_ASSERT(playPosition <= m_bufferLength);
m_playPosition = playPosition;
repaint();
}
void ProgressBar::windowChanged(qint64 position, qint64 length)
{
Q_ASSERT(position >= 0);
Q_ASSERT(position <= m_bufferLength);
Q_ASSERT(position + length <= m_bufferLength);
m_windowPosition = position;
m_windowLength = length;
repaint();
}
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