compass_grid.cpp
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#include <qlayout.h>
#include <qwt_compass.h>
#include <qwt_compass_rose.h>
#include <qwt_dial_needle.h>
#include "compass_grid.h"
CompassGrid::CompassGrid( QWidget *parent ):
QFrame( parent )
{
QPalette p = palette();
p.setColor( backgroundRole(), Qt::gray );
setPalette( p );
setAutoFillBackground( true );
QGridLayout *layout = new QGridLayout( this );
layout->setSpacing( 5 );
layout->setMargin( 0 );
int i;
for ( i = 0; i < 6; i++ )
{
QwtCompass *compass = createCompass( i );
layout->addWidget( compass, i / 3, i % 3 );
}
for ( i = 0; i < layout->columnCount(); i++ )
layout->setColumnStretch( i, 1 );
}
QwtCompass *CompassGrid::createCompass( int pos )
{
int c;
QPalette palette0;
for ( c = 0; c < QPalette::NColorRoles; c++ )
{
const QPalette::ColorRole colorRole =
static_cast<QPalette::ColorRole>( c );
palette0.setColor( colorRole, QColor() );
}
palette0.setColor( QPalette::Base,
palette().color( backgroundRole() ).light( 120 ) );
palette0.setColor( QPalette::WindowText,
palette0.color( QPalette::Base ) );
QwtCompass *compass = new QwtCompass( this );
compass->setLineWidth( 4 );
compass->setFrameShadow(
pos <= 2 ? QwtCompass::Sunken : QwtCompass::Raised );
switch( pos )
{
case 0:
{
/*
A compass with a rose and no needle. Scale and rose are
rotating.
*/
compass->setMode( QwtCompass::RotateScale );
QwtSimpleCompassRose *rose = new QwtSimpleCompassRose( 16, 2 );
rose->setWidth( 0.15 );
compass->setRose( rose );
break;
}
case 1:
{
/*
A windrose, with a scale indicating the main directions only
*/
QMap<double, QString> map;
map.insert( 0.0, "N" );
map.insert( 90.0, "E" );
map.insert( 180.0, "S" );
map.insert( 270.0, "W" );
compass->setScaleDraw( new QwtCompassScaleDraw( map ) );
QwtSimpleCompassRose *rose = new QwtSimpleCompassRose( 4, 1 );
compass->setRose( rose );
compass->setNeedle(
new QwtCompassWindArrow( QwtCompassWindArrow::Style2 ) );
compass->setValue( 60.0 );
break;
}
case 2:
{
/*
A compass with a rotating needle in darkBlue. Shows
a ticks for each degree.
*/
palette0.setColor( QPalette::Base, Qt::darkBlue );
palette0.setColor( QPalette::WindowText,
QColor( Qt::darkBlue ).dark( 120 ) );
palette0.setColor( QPalette::Text, Qt::white );
QwtCompassScaleDraw *scaleDraw = new QwtCompassScaleDraw();
scaleDraw->enableComponent( QwtAbstractScaleDraw::Ticks, true );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Labels, true );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Backbone, false );
scaleDraw->setTickLength( QwtScaleDiv::MinorTick, 1 );
scaleDraw->setTickLength( QwtScaleDiv::MediumTick, 1 );
scaleDraw->setTickLength( QwtScaleDiv::MajorTick, 3 );
compass->setScaleDraw( scaleDraw );
compass->setScaleMaxMajor( 36 );
compass->setScaleMaxMinor( 5 );
compass->setNeedle(
new QwtCompassMagnetNeedle( QwtCompassMagnetNeedle::ThinStyle ) );
compass->setValue( 220.0 );
break;
}
case 3:
{
/*
A compass without a frame, showing numbers as tick labels.
The origin is at 220.0
*/
palette0.setColor( QPalette::Base,
palette().color( backgroundRole() ) );
palette0.setColor( QPalette::WindowText, Qt::blue );
compass->setLineWidth( 0 );
QMap<double, QString> map;
for ( double d = 0.0; d < 360.0; d += 60.0 )
{
QString label;
label.sprintf( "%.0f", d );
map.insert( d, label );
}
QwtCompassScaleDraw *scaleDraw =
new QwtCompassScaleDraw( map );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Ticks, true );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Labels, true );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Backbone, true );
scaleDraw->setTickLength( QwtScaleDiv::MinorTick, 0 );
scaleDraw->setTickLength( QwtScaleDiv::MediumTick, 0 );
scaleDraw->setTickLength( QwtScaleDiv::MajorTick, 3 );
compass->setScaleDraw( scaleDraw );
compass->setScaleMaxMajor( 36 );
compass->setScaleMaxMinor( 5 );
compass->setNeedle( new QwtDialSimpleNeedle( QwtDialSimpleNeedle::Ray,
true, Qt::white ) );
compass->setOrigin( 220.0 );
compass->setValue( 20.0 );
break;
}
case 4:
{
/*
A compass showing another needle
*/
QwtCompassScaleDraw *scaleDraw = new QwtCompassScaleDraw();
scaleDraw->enableComponent( QwtAbstractScaleDraw::Ticks, true );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Labels, true );
scaleDraw->enableComponent( QwtAbstractScaleDraw::Backbone, false );
scaleDraw->setTickLength( QwtScaleDiv::MinorTick, 0 );
scaleDraw->setTickLength( QwtScaleDiv::MediumTick, 0 );
scaleDraw->setTickLength( QwtScaleDiv::MajorTick, 3 );
compass->setScaleDraw( scaleDraw );
compass->setNeedle( new QwtCompassMagnetNeedle(
QwtCompassMagnetNeedle::TriangleStyle, Qt::white, Qt::red ) );
compass->setValue( 220.0 );
break;
}
case 5:
{
/*
A compass with a yellow on black ray
*/
palette0.setColor( QPalette::WindowText, Qt::black );
compass->setNeedle( new QwtDialSimpleNeedle( QwtDialSimpleNeedle::Ray,
false, Qt::yellow ) );
compass->setValue( 315.0 );
break;
}
}
QPalette newPalette = compass->palette();
for ( c = 0; c < QPalette::NColorRoles; c++ )
{
const QPalette::ColorRole colorRole =
static_cast<QPalette::ColorRole>( c );
if ( palette0.color( colorRole ).isValid() )
newPalette.setColor( colorRole, palette0.color( colorRole ) );
}
for ( int i = 0; i < QPalette::NColorGroups; i++ )
{
const QPalette::ColorGroup colorGroup =
static_cast<QPalette::ColorGroup>( i );
const QColor light =
newPalette.color( colorGroup, QPalette::Base ).light( 170 );
const QColor dark = newPalette.color( colorGroup, QPalette::Base ).dark( 170 );
const QColor mid = compass->frameShadow() == QwtDial::Raised
? newPalette.color( colorGroup, QPalette::Base ).dark( 110 )
: newPalette.color( colorGroup, QPalette::Base ).light( 110 );
newPalette.setColor( colorGroup, QPalette::Dark, dark );
newPalette.setColor( colorGroup, QPalette::Mid, mid );
newPalette.setColor( colorGroup, QPalette::Light, light );
}
compass->setPalette( newPalette );
return compass;
}