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/****************************************************************************
** ui.h extension file, included from the uic-generated form implementation.
**
** If you wish to add, delete or rename functions respectively slots use
** Qt Designer which will update this file, preserving your code. Create an
** init() function in place of a constructor, and a destroy() function in
** place of a destructor.
*****************************************************************************/
#include <qvalidator.h>
void ConversionForm::init()
{
numberLineEdit->setValidator( new QDoubleValidator( numberLineEdit ) );
numberLineEdit->setText( "10" );
convert();
numberLineEdit->selectAll();
}
void ConversionForm::convert()
{
enum MetricUnits {
Kilometers,
Meters,
Centimeters,
Millimeters
};
enum OldUnits {
Miles,
Yards,
Feet,
Inches
};
// Retrieve the input
double input = numberLineEdit->text().toDouble();
double scaledInput = input;
// internally convert the input to millimeters
switch ( fromComboBox->currentItem() ) {
case Kilometers:
scaledInput *= 1000000;
break;
case Meters:
scaledInput *= 1000;
break;
case Centimeters:
scaledInput *= 10;
break;
}
//convert to inches
double result = scaledInput * 0.0393701;
switch ( toComboBox->currentItem() ) {
case Miles:
result /= 63360;
break;
case Yards:
result /= 36;
break;
case Feet:
result /= 12;
break;
}
// set the result
int decimals = decimalsSpinBox->value();
resultLineEdit->setText( QString::number( result, 'f', decimals ) );
numberLineEdit->setText( QString::number( input, 'f', decimals ) );
}
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