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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
* Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
#include "qwt_scale_div.h"
#include "qwt_math.h"
#include "qwt_interval.h"
#include <qalgorithms.h>
//! Construct an invalid QwtScaleDiv instance.
QwtScaleDiv::QwtScaleDiv():
d_lowerBound( 0.0 ),
d_upperBound( 0.0 ),
d_isValid( false )
{
}
/*!
Construct QwtScaleDiv instance.
\param interval Interval
\param ticks List of major, medium and minor ticks
*/
QwtScaleDiv::QwtScaleDiv( const QwtInterval &interval,
QList<double> ticks[NTickTypes] ):
d_lowerBound( interval.minValue() ),
d_upperBound( interval.maxValue() ),
d_isValid( true )
{
for ( int i = 0; i < NTickTypes; i++ )
d_ticks[i] = ticks[i];
}
/*!
Construct QwtScaleDiv instance.
\param lowerBound First interval limit
\param upperBound Second interval limit
\param ticks List of major, medium and minor ticks
*/
QwtScaleDiv::QwtScaleDiv(
double lowerBound, double upperBound,
QList<double> ticks[NTickTypes] ):
d_lowerBound( lowerBound ),
d_upperBound( upperBound ),
d_isValid( true )
{
for ( int i = 0; i < NTickTypes; i++ )
d_ticks[i] = ticks[i];
}
/*!
Change the interval
\param interval Interval
*/
void QwtScaleDiv::setInterval( const QwtInterval &interval )
{
setInterval( interval.minValue(), interval.maxValue() );
}
/*!
\brief Equality operator
\return true if this instance is equal to other
*/
bool QwtScaleDiv::operator==( const QwtScaleDiv &other ) const
{
if ( d_lowerBound != other.d_lowerBound ||
d_upperBound != other.d_upperBound ||
d_isValid != other.d_isValid )
{
return false;
}
for ( int i = 0; i < NTickTypes; i++ )
{
if ( d_ticks[i] != other.d_ticks[i] )
return false;
}
return true;
}
/*!
\brief Inequality
\return true if this instance is not equal to s
*/
bool QwtScaleDiv::operator!=( const QwtScaleDiv &s ) const
{
return ( !( *this == s ) );
}
//! Invalidate the scale division
void QwtScaleDiv::invalidate()
{
d_isValid = false;
// detach arrays
for ( int i = 0; i < NTickTypes; i++ )
d_ticks[i].clear();
d_lowerBound = d_upperBound = 0;
}
//! Check if the scale division is valid
bool QwtScaleDiv::isValid() const
{
return d_isValid;
}
/*!
Return if a value is between lowerBound() and upperBound()
\param value Value
\return true/false
*/
bool QwtScaleDiv::contains( double value ) const
{
if ( !d_isValid )
return false;
const double min = qMin( d_lowerBound, d_upperBound );
const double max = qMax( d_lowerBound, d_upperBound );
return value >= min && value <= max;
}
//! Invert the scale divison
void QwtScaleDiv::invert()
{
qSwap( d_lowerBound, d_upperBound );
for ( int i = 0; i < NTickTypes; i++ )
{
QList<double>& ticks = d_ticks[i];
const int size = ticks.count();
const int size2 = size / 2;
for ( int i = 0; i < size2; i++ )
qSwap( ticks[i], ticks[size - 1 - i] );
}
}
/*!
Assign ticks
\param type MinorTick, MediumTick or MajorTick
\param ticks Values of the tick positions
*/
void QwtScaleDiv::setTicks( int type, const QList<double> &ticks )
{
if ( type >= 0 || type < NTickTypes )
d_ticks[type] = ticks;
}
/*!
Return a list of ticks
\param type MinorTick, MediumTick or MajorTick
*/
const QList<double> &QwtScaleDiv::ticks( int type ) const
{
if ( type >= 0 || type < NTickTypes )
return d_ticks[type];
static QList<double> noTicks;
return noTicks;
}
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