LevelMeterVU Class Reference

#include <levelmeter.h>

Inheritance diagram for LevelMeterVU:

Collaboration diagram for LevelMeterVU:

Public Member Functions
	LevelMeterVU (QWidget *parent=0)
virtual	~LevelMeterVU ()
Public Member Functions inherited from LevelMeter
	LevelMeter (QWidget *parent=0)
virtual	~LevelMeter ()
void	paintEvent (QPaintEvent *event)
void	resizeEvent (QResizeEvent *event)
void	setAverageSmoothing (uint32_t smoothingFactor)

Protected Member Functions
virtual void	render (QPainter *painter)
virtual void	resized ()
Protected Member Functions inherited from LevelMeter
int	shiftx (int val, int width)

Additional Inherited Members
Public Slots inherited from LevelMeter
void	reset ()
void	levelChanged (qreal rmsLevel, qreal peakLevel, int numSamples)
Protected Slots inherited from LevelMeter
void	redrawTimerExpired ()
Protected Attributes inherited from LevelMeter
qreal	m_avgLevel
qreal	m_peakLevel
qreal	m_decayedPeakLevel
QTime	m_peakLevelChanged
qreal	m_peakDecayRate
qreal	m_peakHoldLevel
QTime	m_peakHoldLevelChanged
uint32_t	m_avgSmoothing
QTimer *	m_redrawTimer
QColor	m_avgColor
QColor	m_peakColor
QColor	m_decayedPeakColor
ScaleEngine	m_scaleEngine
QPixmap *	m_backgroundPixmap

Detailed Description

Definition at line 148 of file levelmeter.h.

Constructor & Destructor Documentation

LevelMeterVU()

LevelMeterVU::LevelMeterVU

(

QWidget *

parent = 0

)

Definition at line 154 of file levelmeter.cpp.

References LevelMeter::m_scaleEngine, Unit::Percent, resized(), ScaleEngine::setFont(), ScaleEngine::setOrientation(), and ScaleEngine::setRange().

                                          :
        LevelMeter(parent)
{
    m_scaleEngine.setFont(font());
    m_scaleEngine.setOrientation(Qt::Horizontal);
    m_scaleEngine.setRange(Unit::Percent, 0, 100);

    resized();
}

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~LevelMeterVU()

LevelMeterVU::~LevelMeterVU ( )

virtual

Definition at line 164 of file levelmeter.cpp.

{
}

Member Function Documentation

render()

void LevelMeterVU::render ( QPainter *  painter )

protectedvirtual

Implements LevelMeter.

Definition at line 222 of file levelmeter.cpp.

References LevelMeter::m_avgColor, LevelMeterSignalDB::m_avgColor, LevelMeter::m_avgLevel, LevelMeter::m_backgroundPixmap, LevelMeter::m_decayedPeakColor, LevelMeterSignalDB::m_decayedPeakColor, LevelMeter::m_decayedPeakLevel, LevelMeter::m_peakColor, LevelMeterSignalDB::m_peakColor, and LevelMeter::m_peakHoldLevel.

{
    painter->drawPixmap(rect(), *m_backgroundPixmap);

    QRect bar = rect();

    // Bottom moving gauge

    bar.setTop(0.5 * rect().height() + 2);
    bar.setBottom(rect().height() - 1);

    bar.setRight(rect().right() - (1.0 - 0.75*m_peakHoldLevel) * rect().width());
    bar.setLeft(bar.right() - 2);
    painter->fillRect(bar, m_peakColor);

    bar.setBottom(0.75*rect().height());

    bar.setRight(rect().right() - (1.0 - 0.75*m_avgLevel) * rect().width());
    bar.setLeft(1);
    painter->fillRect(bar, m_avgColor);

    bar.setTop(0.75 * rect().height() + 1);
    bar.setBottom(rect().height() - 1);

    bar.setRight(rect().right() - (1.0 - 0.75*m_decayedPeakLevel) * rect().width());
    painter->fillRect(bar, m_decayedPeakColor);

    // borders
    painter->setPen(QColor(0,0,0));
    painter->drawLine(0, 0, rect().width() - 2, 0);
    painter->drawLine(0, rect().height() - 1, 0, 0);
    painter->setPen(QColor(80,80,80));
    painter->drawLine(1, rect().height() - 1, rect().width() - 1, rect().height() - 1);
    painter->drawLine(rect().width() - 1, rect().height() - 1, rect().width() - 1, 0);
}

resized()

void LevelMeterVU::resized ( )

protectedvirtual

Implements LevelMeter.

Definition at line 168 of file levelmeter.cpp.

References ScaleEngine::getTickList(), i, LevelMeter::m_backgroundPixmap, LevelMeter::m_scaleEngine, ScaleEngine::Tick::major, ScaleEngine::Tick::pos, ScaleEngine::setSize(), LevelMeter::shiftx(), ScaleEngine::Tick::text, ScaleEngine::Tick::textPos, and ScaleEngine::Tick::textSize.

Referenced by LevelMeterVU().

{
    if (m_backgroundPixmap)
    {
        delete m_backgroundPixmap;
    }

    m_backgroundPixmap = new QPixmap(rect().width(), rect().height());
    m_backgroundPixmap->fill(QColor(42, 42, 42, 255));

    QPainter painter(m_backgroundPixmap);
    QRect barTop = m_backgroundPixmap->rect();
    barTop.setBottom(0.5 * rect().height() - 2);
    barTop.setTop(2);
    barTop.setLeft(0.75* rect().width());
    painter.fillRect(barTop, Qt::red);

    QRect bar = m_backgroundPixmap->rect();

    // 100% full height white line
    painter.setPen(Qt::white);
    painter.setFont(font());
//    painter.drawLine(0.75*bar.width(), 0, 0.75*bar.width(), bar.height());

    m_scaleEngine.setSize(0.75*bar.width());
    const ScaleEngine::TickList& scaleTickList = m_scaleEngine.getTickList();


    for (int i = 0; i < scaleTickList.count(); i++)
    {
//        qDebug() << "LevelMeterVU::resized: tick #" << i
//                << " major: " << scaleTickList[i].major
//                << " pos: " << scaleTickList[i].pos
//                << " text: " << scaleTickList[i].text
//                << " textPos: " << scaleTickList[i].textPos
//                << " textSize: " << scaleTickList[i].textSize;
        const ScaleEngine::Tick tick = scaleTickList[i];

        if(tick.major)
        {
            if ((tick.textSize > 0) && (tick.textPos > 0))
            {
                painter.drawText(QPointF(tick.textPos - (tick.textSize/2) - 4, bar.height()/2 - 3), tick.text);
            }

            painter.drawLine(shiftx(tick.pos, bar.width()), 0, shiftx(scaleTickList[i].pos, bar.width()), bar.height());
        }
        else
        {
            painter.drawLine(tick.pos, bar.height()/2 - 2, scaleTickList[i].pos, bar.height()/2);
        }
    }
}

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The documentation for this class was generated from the following files:

• sdrgui/gui/levelmeter.h
• sdrgui/gui/levelmeter.cpp