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https://github.com/qgis/QGIS.git
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132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
/***************************************************************************
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qgsdial.cpp
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-------------------
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begin : July 2013
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copyright : (C) 2013 by Daniel Vaz
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email : danielvaz at gmail dot com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgsdial.h"
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#include "qgslogger.h"
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#include <QPaintEvent>
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#include <QPainter>
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#include <QRect>
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QgsDial::QgsDial( QWidget *parent ) : QDial( parent )
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{
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setMinimumSize( QSize( 50, 50 ) );
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}
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void QgsDial::paintEvent( QPaintEvent *event )
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{
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QDial::paintEvent( event );
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QPainter painter( this );
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QRect rect = geometry();
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painter.setPen( QPen( palette().color( QPalette::WindowText ) ) );
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painter.drawText( QRectF( 0, rect.height() * 0.65, rect.width(), rect.height() ),
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Qt::AlignHCenter, variantValue().toString(), nullptr );
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painter.end();
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}
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void QgsDial::setMinimum( const QVariant &min )
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{
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mMin = min;
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update();
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}
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void QgsDial::setMaximum( const QVariant &max )
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{
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mMax = max;
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update();
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}
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void QgsDial::setSingleStep( const QVariant &step )
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{
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mStep = step;
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update();
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}
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void QgsDial::setValue( const QVariant &value )
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{
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mValue = value;
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update();
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}
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void QgsDial::update()
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{
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if ( mMin.isNull() || mMax.isNull() || mStep.isNull() )
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return;
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if ( mValue.isNull() )
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mValue = mMin;
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if ( mMin.type() == QVariant::Int &&
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mMax.type() == QVariant::Int &&
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mStep.type() == QVariant::Int &&
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mValue.type() == QVariant::Int )
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{
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QDial::setMinimum( mMin.toInt() );
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QDial::setMaximum( mMax.toInt() );
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QDial::setSingleStep( mStep.toInt() );
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QDial::setValue( mValue.toInt() );
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}
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if ( mMin.type() == QVariant::Double &&
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mMax.type() == QVariant::Double &&
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mStep.type() == QVariant::Double &&
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mValue.type() == QVariant::Double )
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{
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if ( minimum() != 0 )
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QDial::setMinimum( 0 );
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int max = std::ceil( ( mMax.toDouble() - mMin.toDouble() ) / mStep.toDouble() );
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if ( maximum() != max )
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QDial::setMaximum( max );
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if ( singleStep() != 1 )
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QDial::setSingleStep( 1 );
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QDial::setValue( std::ceil( ( mValue.toDouble() - mMin.toDouble() ) / mStep.toDouble() ) );
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}
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connect( this, static_cast < void ( QDial::* )( int ) > ( &QDial::valueChanged ), this, &QgsDial::onValueChanged );
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}
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QVariant QgsDial::variantValue() const
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{
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return mValue;
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}
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void QgsDial::onValueChanged( int value )
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{
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if ( mMin.isNull() || mMax.isNull() || mStep.isNull() )
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{
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mValue = QVariant();
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}
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else if ( mMin.type() == QVariant::Int &&
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mMax.type() == QVariant::Int &&
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mStep.type() == QVariant::Int &&
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mValue.type() == QVariant::Int )
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{
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mValue = value;
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}
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else if ( mMin.type() == QVariant::Double &&
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mMax.type() == QVariant::Double &&
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mStep.type() == QVariant::Double &&
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mValue.type() == QVariant::Double )
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{
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mValue = QVariant( mMin.toDouble() + value * mStep.toDouble() );
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}
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emit valueChanged( mValue );
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}
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