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WFloatLineEdit.cpp

Go to the documentation of this file.

/* -------------------------------------------------------- */
#include <math.h>
#include "WFloatLineEdit.h"
#include <iostream>
using std::cerr; using std::endl;
/* -------------------------------------------------------- */

WFloatLineEdit::WFloatLineEdit(QWidget *parent,const char *name) : QLineEdit(parent,name)
{
  m_iPercent=-1;
  m_fMinValue=0.0;
  m_fMaxValue=1.0;
  m_fValue=0.0;
  m_bFirst=true;
  m_DblValid=new QDoubleValidator(m_fMinValue,m_fMaxValue,6,this);
  setValidator(m_DblValid);
  connect(this,SIGNAL(returnPressed()),
      this,SLOT(slotReturnPressed()));
  m_bInternal=false;
  validateAndSet(QString("%1").arg(m_fValue),0,0,0);
}
/* -------------------------------------------------------- */
void WFloatLineEdit::slotReturnPressed()
{
  //cerr<<"WFloatLineEdit::slotReturnPressed"<<endl;
  m_bInternal=true;
  slotCalcFloatValue(text().toFloat());
}
/* -------------------------------------------------------- */
void WFloatLineEdit::slotCalcFloatValue(float f)
{
  int    p;
  
  //cerr << "WFloatLineEdit::slotCalcFloatValue" << endl;
  if (f < m_fMinValue)
    f=m_fMinValue;
  else if (f > m_fMaxValue)
    f=m_fMaxValue;
  if (f != m_fValue || m_bFirst)
  {
    m_bFirst=false;
    m_fValue=f;
    //cerr << "WFloatLineEdit::slotCalcFloatValue m_fValue = " << m_fValue << endl;
    emit (floatValueChanged(f));
    p=(int)(100.0*(f - m_fMinValue)/(m_fMaxValue - m_fMinValue));
    if (p != m_iPercent)
    {
//      cerr << "m_iPercent = " << m_iPercent << endl;
      emit (valuePercentChanged(p));
      m_iPercent=p;
    }
    update();
  }
  validateAndSet(QString("%1").arg(m_fValue),0,0,0);
}
/* -------------------------------------------------------- */
void WFloatLineEdit::slotCalcFloatValue(const QString& s)
{
  slotCalcFloatValue(s.toFloat());
}
/* -------------------------------------------------------- */
void WFloatLineEdit::setFloatValue(float f) 
{
  m_bInternal=true;
  slotCalcFloatValue(f);
}

void WFloatLineEdit::setIntValue(int f)
{
 setFloatValue(static_cast<float>(f));
}
/* -------------------------------------------------------- */
void WFloatLineEdit::setValuePercent(int p)
{
  if (!m_bInternal)
    setFloatValue(m_fMinValue + (m_fMaxValue -
                 m_fMinValue)*((double)p)/99.0);
  else
    m_bInternal=false;
}
/* -------------------------------------------------------- */
int WFloatLineEdit::valuePercent()
{
  return ((int)(99.0*(m_fValue - m_fMinValue)/(m_fMaxValue - m_fMinValue)));
}
/* -------------------------------------------------------- */
void WFloatLineEdit::keyPressEvent(QKeyEvent *e)
{
  if (e->key() == Qt::Key_Escape)
    validateAndSet(QString("%1").arg(m_fValue),0,0,0);
  else
    QLineEdit::keyPressEvent(e);
}
/* -------------------------------------------------------- */

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