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Level Meter: set fixed background as a pixmap

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This commit is contained in:
f4exb 2016-12-04 19:03:51 +01:00
parent 76932e6627
commit 4d5e2f9656
2 changed files with 78 additions and 14 deletions
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82
sdrbase/gui/levelmeter.cpp
View File

@ -65,9 +65,10 @@ LevelMeter::LevelMeter(QWidget *parent)
, m_peakDecayRate(PeakDecayRate)
, m_peakHoldLevel(0.0)
, m_redrawTimer(new QTimer(this))
, m_avgColor(QColor(0x97, 0x54, 0x00)) // color mapper 59%
, m_decayedPeakColor(QColor(0xff, 0x8b, 0x00)) // color mapper foreground
, m_peakColor(255, 0, 0, 255) // just red
, m_avgColor(0x97, 0x54, 0x00, 128) // color mapper 59%
, m_decayedPeakColor(0xff, 0x8b, 0x00, 128) // color mapper foreground
, m_peakColor(255, 0, 0, 128) // just red
, m_backgroundPixmap(0)
{
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
setMinimumWidth(30);
@ -78,7 +79,9 @@ LevelMeter::LevelMeter(QWidget *parent)
LevelMeter::~LevelMeter()
{
if (m_backgroundPixmap) {
delete m_backgroundPixmap;
}
}
void LevelMeter::reset()
@ -133,32 +136,85 @@ void LevelMeter::paintEvent(QPaintEvent *event)
render(&painter);
}
void LevelMeter::resizeEvent(QResizeEvent * event)
{
Q_UNUSED(event)
resized();
}
LevelMeterVU::LevelMeterVU(QWidget *parent) :
LevelMeter(parent)
{
m_scaleEngine.setFont(font());
m_scaleEngine.setOrientation(Qt::Horizontal);
m_scaleEngine.setRange(Unit::Percent, 0, 100);
resized();
}
LevelMeterVU::~LevelMeterVU()
{
}
void LevelMeterVU::render(QPainter *painter)
void LevelMeterVU::resized()
{
painter->fillRect(rect(), QColor(42, 42, 42, 255));
if (m_backgroundPixmap)
{
delete m_backgroundPixmap;
}
// red zone on top half
QRect barTop = rect();
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);
painter.fillRect(barTop, Qt::red);
QRect bar = rect();
QRect bar = m_backgroundPixmap->rect();
// 100% full height white line
bar.setLeft(0.75* rect().width() - 2);
bar.setRight(0.75* rect().width());
painter->fillRect(bar, Qt::white);
painter.setPen(Qt::white);
// 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) - 2, bar.height()/2), tick.text);
}
painter.drawLine(tick.pos, 0, scaleTickList[i].pos, bar.height());
}
else
{
painter.drawLine(tick.pos, bar.height()/4, scaleTickList[i].pos, bar.height()/2);
}
}
}
void LevelMeterVU::render(QPainter *painter)
{
painter->drawPixmap(rect(), *m_backgroundPixmap);
QRect bar = rect();
// Bottom moving gauge

10
sdrbase/gui/levelmeter.h
View File

@ -49,7 +49,9 @@
#include <QTime>
#include <QWidget>
#include <dsp/dsptypes.h>
#include "dsp/dsptypes.h"
#include "gui/scaleengine.h"
/**
* Widget which displays a vertical audio level meter, indicating the
@ -65,6 +67,7 @@ public:
virtual ~LevelMeter();
void paintEvent(QPaintEvent *event);
void resizeEvent(QResizeEvent * event);
public slots:
void reset();
@ -121,7 +124,11 @@ protected:
QColor m_peakColor;
QColor m_decayedPeakColor;
ScaleEngine m_scaleEngine;
QPixmap *m_backgroundPixmap;
virtual void render(QPainter *painter) = 0;
virtual void resized() = 0;
};
class LevelMeterVU : public LevelMeter
@ -131,6 +138,7 @@ public:
virtual ~LevelMeterVU();
protected:
virtual void render(QPainter *painter);
virtual void resized();
};