qt_demoe/qwtdemo/examples/legends/panel.cpp

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2019-11-07 02:55:57 +00:00
#include "panel.h"
#include "settings.h"
#include <qcheckbox.h>
#include <qspinbox.h>
#include <qcombobox.h>
#include <qgroupbox.h>
#include <qlayout.h>
#include <qlabel.h>
#include <qlineedit.h>
#include <qwt_plot.h>
#include <qwt_plot_legenditem.h>
Panel::Panel( QWidget *parent ):
QWidget( parent )
{
// create widgets
d_legend.checkBox = new QCheckBox( "Enabled" );
d_legend.positionBox = new QComboBox();
d_legend.positionBox->addItem( "Left", QwtPlot::LeftLegend );
d_legend.positionBox->addItem( "Right", QwtPlot::RightLegend );
d_legend.positionBox->addItem( "Bottom", QwtPlot::BottomLegend );
d_legend.positionBox->addItem( "Top", QwtPlot::TopLegend );
d_legend.positionBox->addItem( "External", QwtPlot::TopLegend + 1 );
d_legendItem.checkBox = new QCheckBox( "Enabled" );
d_legendItem.numColumnsBox = new QSpinBox();
d_legendItem.numColumnsBox->setRange( 0, 10 );
d_legendItem.numColumnsBox->setSpecialValueText( "Unlimited" );
d_legendItem.hAlignmentBox = new QComboBox();
d_legendItem.hAlignmentBox->addItem( "Left", Qt::AlignLeft );
d_legendItem.hAlignmentBox->addItem( "Centered", Qt::AlignHCenter );
d_legendItem.hAlignmentBox->addItem( "Right", Qt::AlignRight );
d_legendItem.vAlignmentBox = new QComboBox();
d_legendItem.vAlignmentBox->addItem( "Top", Qt::AlignTop );
d_legendItem.vAlignmentBox->addItem( "Centered", Qt::AlignVCenter );
d_legendItem.vAlignmentBox->addItem( "Bottom", Qt::AlignBottom );
d_legendItem.backgroundBox = new QComboBox();
d_legendItem.backgroundBox->addItem( "Legend",
QwtPlotLegendItem::LegendBackground );
d_legendItem.backgroundBox->addItem( "Items",
QwtPlotLegendItem::ItemBackground );
d_legendItem.sizeBox = new QSpinBox();
d_legendItem.sizeBox->setRange( 8, 22 );
d_curve.numCurves = new QSpinBox();
d_curve.numCurves->setRange( 0, 99 );
d_curve.title = new QLineEdit();
// layout
QGroupBox *legendBox = new QGroupBox( "Legend" );
QGridLayout *legendBoxLayout = new QGridLayout( legendBox );
int row = 0;
legendBoxLayout->addWidget( d_legend.checkBox, row, 0, 1, -1 );
row++;
legendBoxLayout->addWidget( new QLabel( "Position" ), row, 0 );
legendBoxLayout->addWidget( d_legend.positionBox, row, 1 );
QGroupBox *legendItemBox = new QGroupBox( "Legend Item" );
QGridLayout *legendItemBoxLayout = new QGridLayout( legendItemBox );
row = 0;
legendItemBoxLayout->addWidget( d_legendItem.checkBox, row, 0, 1, -1 );
row++;
legendItemBoxLayout->addWidget( new QLabel( "Columns" ), row, 0 );
legendItemBoxLayout->addWidget( d_legendItem.numColumnsBox, row, 1 );
row++;
legendItemBoxLayout->addWidget( new QLabel( "Horizontal" ), row, 0 );
legendItemBoxLayout->addWidget( d_legendItem.hAlignmentBox, row, 1 );
row++;
legendItemBoxLayout->addWidget( new QLabel( "Vertical" ), row, 0 );
legendItemBoxLayout->addWidget( d_legendItem.vAlignmentBox, row, 1 );
row++;
legendItemBoxLayout->addWidget( new QLabel( "Background" ), row, 0 );
legendItemBoxLayout->addWidget( d_legendItem.backgroundBox, row, 1 );
row++;
legendItemBoxLayout->addWidget( new QLabel( "Size" ), row, 0 );
legendItemBoxLayout->addWidget( d_legendItem.sizeBox, row, 1 );
QGroupBox *curveBox = new QGroupBox( "Curves" );
QGridLayout *curveBoxLayout = new QGridLayout( curveBox );
row = 0;
curveBoxLayout->addWidget( new QLabel( "Number" ), row, 0 );
curveBoxLayout->addWidget( d_curve.numCurves, row, 1 );
row++;
curveBoxLayout->addWidget( new QLabel( "Title" ), row, 0 );
curveBoxLayout->addWidget( d_curve.title, row, 1 );
QVBoxLayout *layout = new QVBoxLayout( this );
layout->addWidget( legendBox );
layout->addWidget( legendItemBox );
layout->addWidget( curveBox );
layout->addStretch( 10 );
connect( d_legend.checkBox,
SIGNAL( stateChanged( int ) ), SIGNAL( edited() ) );
connect( d_legend.positionBox,
SIGNAL( currentIndexChanged( int ) ), SIGNAL( edited() ) );
connect( d_legendItem.checkBox,
SIGNAL( stateChanged( int ) ), SIGNAL( edited() ) );
connect( d_legendItem.numColumnsBox,
SIGNAL( valueChanged( int ) ), SIGNAL( edited() ) );
connect( d_legendItem.hAlignmentBox,
SIGNAL( currentIndexChanged( int ) ), SIGNAL( edited() ) );
connect( d_legendItem.vAlignmentBox,
SIGNAL( currentIndexChanged( int ) ), SIGNAL( edited() ) );
connect( d_legendItem.backgroundBox,
SIGNAL( currentIndexChanged( int ) ), SIGNAL( edited() ) );
connect( d_curve.numCurves,
SIGNAL( valueChanged( int ) ), SIGNAL( edited() ) );
connect( d_legendItem.sizeBox,
SIGNAL( valueChanged( int ) ), SIGNAL( edited() ) );
connect( d_curve.title,
SIGNAL( textEdited( const QString & ) ), SIGNAL( edited() ) );
}
void Panel::setSettings( const Settings &settings)
{
blockSignals( true );
d_legend.checkBox->setCheckState(
settings.legend.isEnabled ? Qt::Checked : Qt::Unchecked );
d_legend.positionBox->setCurrentIndex( settings.legend.position );
d_legendItem.checkBox->setCheckState(
settings.legendItem.isEnabled ? Qt::Checked : Qt::Unchecked );
d_legendItem.numColumnsBox->setValue( settings.legendItem.numColumns );
int align = settings.legendItem.alignment;
if ( align & Qt::AlignLeft )
d_legendItem.hAlignmentBox->setCurrentIndex( 0 );
else if ( align & Qt::AlignRight )
d_legendItem.hAlignmentBox->setCurrentIndex( 2 );
else
d_legendItem.hAlignmentBox->setCurrentIndex( 1 );
if ( align & Qt::AlignTop )
d_legendItem.vAlignmentBox->setCurrentIndex( 0 );
else if ( align & Qt::AlignBottom )
d_legendItem.vAlignmentBox->setCurrentIndex( 2 );
else
d_legendItem.vAlignmentBox->setCurrentIndex( 1 );
d_legendItem.backgroundBox->setCurrentIndex(
settings.legendItem.backgroundMode );
d_legendItem.sizeBox->setValue( settings.legendItem.size );
d_curve.numCurves->setValue( settings.curve.numCurves );
d_curve.title->setText( settings.curve.title );
blockSignals( false );
}
Settings Panel::settings() const
{
Settings s;
s.legend.isEnabled =
d_legend.checkBox->checkState() == Qt::Checked;
s.legend.position = d_legend.positionBox->currentIndex();
s.legendItem.isEnabled =
d_legendItem.checkBox->checkState() == Qt::Checked;
s.legendItem.numColumns = d_legendItem.numColumnsBox->value();
int align = 0;
int hIndex = d_legendItem.hAlignmentBox->currentIndex();
if ( hIndex == 0 )
align |= Qt::AlignLeft;
else if ( hIndex == 2 )
align |= Qt::AlignRight;
else
align |= Qt::AlignHCenter;
int vIndex = d_legendItem.vAlignmentBox->currentIndex();
if ( vIndex == 0 )
align |= Qt::AlignTop;
else if ( vIndex == 2 )
align |= Qt::AlignBottom;
else
align |= Qt::AlignVCenter;
s.legendItem.alignment = align;
s.legendItem.backgroundMode =
d_legendItem.backgroundBox->currentIndex();
s.legendItem.size = d_legendItem.sizeBox->value();
s.curve.numCurves = d_curve.numCurves->value();
s.curve.title = d_curve.title->text();
return s;
}