cockpit_grid.cpp
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#include <qlayout.h>
#include <qtimer.h>
#include <qwt_analog_clock.h>
#include <qwt_round_scale_draw.h>
#include "attitude_indicator.h"
#include "speedo_meter.h"
#include "cockpit_grid.h"
CockpitGrid::CockpitGrid( QWidget *parent ):
QFrame( parent )
{
setAutoFillBackground( true );
setPalette( colorTheme( QColor( Qt::darkGray ).dark( 150 ) ) );
QGridLayout *layout = new QGridLayout( this );
layout->setSpacing( 5 );
layout->setMargin( 0 );
int i;
for ( i = 0; i < 3; i++ )
{
QwtDial *dial = createDial( i );
layout->addWidget( dial, 0, i );
}
for ( i = 0; i < layout->columnCount(); i++ )
layout->setColumnStretch( i, 1 );
}
QwtDial *CockpitGrid::createDial( int pos )
{
QwtDial *dial = NULL;
switch( pos )
{
case 0:
{
d_clock = new QwtAnalogClock( this );
#if 0
// disable minor ticks
d_clock->scaleDraw()->setTickLength( QwtScaleDiv::MinorTick, 0 );
#endif
const QColor knobColor = QColor( Qt::gray ).light( 130 );
for ( int i = 0; i < QwtAnalogClock::NHands; i++ )
{
QColor handColor = QColor( Qt::gray ).light( 150 );
int width = 8;
if ( i == QwtAnalogClock::SecondHand )
{
handColor = Qt::gray;
width = 5;
}
QwtDialSimpleNeedle *hand = new QwtDialSimpleNeedle(
QwtDialSimpleNeedle::Arrow, true, handColor, knobColor );
hand->setWidth( width );
d_clock->setHand( static_cast<QwtAnalogClock::Hand>( i ), hand );
}
QTimer *timer = new QTimer( d_clock );
timer->connect( timer, SIGNAL( timeout() ),
d_clock, SLOT( setCurrentTime() ) );
timer->start( 1000 );
dial = d_clock;
break;
}
case 1:
{
d_speedo = new SpeedoMeter( this );
d_speedo->setScaleStepSize( 20.0 );
d_speedo->setScale( 0.0, 240.0 );
d_speedo->scaleDraw()->setPenWidth( 2 );
QTimer *timer = new QTimer( d_speedo );
timer->connect( timer, SIGNAL( timeout() ),
this, SLOT( changeSpeed() ) );
timer->start( 50 );
dial = d_speedo;
break;
}
case 2:
{
d_ai = new AttitudeIndicator( this );
d_ai->scaleDraw()->setPenWidth( 3 );
QTimer *gradientTimer = new QTimer( d_ai );
gradientTimer->connect( gradientTimer, SIGNAL( timeout() ),
this, SLOT( changeGradient() ) );
gradientTimer->start( 100 );
QTimer *angleTimer = new QTimer( d_ai );
angleTimer->connect( angleTimer, SIGNAL( timeout() ),
this, SLOT( changeAngle() ) );
angleTimer->start( 100 );
dial = d_ai;
break;
}
}
if ( dial )
{
dial->setReadOnly( true );
dial->setLineWidth( 4 );
dial->setFrameShadow( QwtDial::Sunken );
}
return dial;
}
QPalette CockpitGrid::colorTheme( const QColor &base ) const
{
QPalette palette;
palette.setColor( QPalette::Base, base );
palette.setColor( QPalette::Window, base.dark( 150 ) );
palette.setColor( QPalette::Mid, base.dark( 110 ) );
palette.setColor( QPalette::Light, base.light( 170 ) );
palette.setColor( QPalette::Dark, base.dark( 170 ) );
palette.setColor( QPalette::Text, base.dark( 200 ).light( 800 ) );
palette.setColor( QPalette::WindowText, base.dark( 200 ) );
return palette;
}
void CockpitGrid::changeSpeed()
{
static double offset = 0.8;
double speed = d_speedo->value();
if ( ( speed < 7.0 && offset < 0.0 ) ||
( speed > 203.0 && offset > 0.0 ) )
{
offset = -offset;
}
static int counter = 0;
switch( counter++ % 12 )
{
case 0:
case 2:
case 7:
case 8:
break;
default:
d_speedo->setValue( speed + offset );
}
}
void CockpitGrid::changeAngle()
{
static double offset = 0.05;
double angle = d_ai->angle();
if ( angle > 180.0 )
angle -= 360.0;
if ( ( angle < -5.0 && offset < 0.0 ) ||
( angle > 5.0 && offset > 0.0 ) )
{
offset = -offset;
}
d_ai->setAngle( angle + offset );
}
void CockpitGrid::changeGradient()
{
static double offset = 0.005;
double gradient = d_ai->gradient();
if ( ( gradient < -0.05 && offset < 0.0 ) ||
( gradient > 0.05 && offset > 0.0 ) )
{
offset = -offset;
}
d_ai->setGradient( gradient + offset );
}