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/****************************************************************************
*
* File: calcdisplay.cpp
*
* Description:
*
*
* Authors: Eric Santonacci <Eric.Santonacci@talc.fr>
*
* Requirements: Qt
*
* $Id$
*
***************************************************************************/
#include <stdio.h>
#include <qvbox.h>
#include "currency.h"
#include "calcdisplay.h"
LCDDisplay::LCDDisplay( QWidget *parent, const char *name )
: QHBox( parent, name ){
// Create display
QVBox *vbxlayout = new QVBox (this);
grpbxTop = new QVGroupBox(vbxlayout, "grpbxTop");
cbbxTop = new QComboBox(grpbxTop, "cbbxTop");
lcdTop = new QLCDNumber(10, grpbxTop, "lcdTop");
lcdTop->setMode( QLCDNumber::DEC );
lcdTop->setSmallDecimalPoint(true);
lcdTop->setSegmentStyle(QLCDNumber::Flat);
cbbxTop->insertStrList(aCurrency);
grpbxBottom = new QVGroupBox(vbxlayout, "grpbxBottom");
cbbxBottom = new QComboBox(grpbxBottom, "cbbxBottom");
lcdBottom = new QLCDNumber(10, grpbxBottom, "lcdBottom");
lcdBottom->setMode( QLCDNumber::DEC );
lcdBottom->setSmallDecimalPoint(true);
lcdBottom->setSegmentStyle(QLCDNumber::Flat);
cbbxBottom->insertStrList(aCurrency);
// set combo box signals
connect(cbbxTop, SIGNAL(activated(int)), this, SLOT(cbbxChange()));
connect(cbbxBottom, SIGNAL(activated(int)), this, SLOT(cbbxChange()));
btnSwap = new QPushButton("S",this, "swap");
btnSwap->setMaximumSize(20,50);
btnSwap->setMinimumSize(20,50);
// set signal
connect(btnSwap, SIGNAL(clicked()), this, SLOT(swapLCD()));
// set default LCD to top
iCurrentLCD = 0;
//setValue(123.456);
}
/***********************************************************************
* SLOT: Display value in the correct LCD
**********************************************************************/
void LCDDisplay::setValue(double dSrcValue){
double dDstValue=0;
int iSrcIndex;
int iDstIndex;
// get item index of the focused
if(!iCurrentLCD){
iSrcIndex = cbbxTop->currentItem();
iDstIndex = cbbxBottom->currentItem();
}else{
iSrcIndex = cbbxBottom->currentItem();
iDstIndex = cbbxTop->currentItem();
}
if(iSrcIndex == iDstIndex)
dDstValue = dSrcValue;
else{
if(iSrcIndex){
// we are NOT in Euro as iDstIndex <> 0
// Convert to Euro
dDstValue = x2Euro(iSrcIndex, dSrcValue);
dDstValue = Euro2x(iDstIndex, dDstValue);
}else
// We are in Euro
dDstValue = Euro2x(iDstIndex, dSrcValue);
}
if(!iCurrentLCD){
lcdTop->display(dSrcValue);
lcdBottom->display(dDstValue);
}else{
lcdBottom->display(dSrcValue);
lcdTop->display(dDstValue);
}
}
/***********************************************************************
* SLOT: Swap output keypad between LCD displays
**********************************************************************/
void LCDDisplay::swapLCD(void){
double dCurrentValue;
// get current value
if(!iCurrentLCD){
dCurrentValue = lcdTop->value();
iCurrentLCD = 1;
}else{
dCurrentValue = lcdBottom->value();
iCurrentLCD = 0;
}
setValue(dCurrentValue);
}
/***********************************************************************
* SLOT: Currency change
**********************************************************************/
void LCDDisplay::cbbxChange(void){
double dCurrentValue;
printf("combo changes...\n");
// get current value
if(!iCurrentLCD){
dCurrentValue = lcdTop->value();
}else{
dCurrentValue = lcdBottom->value();
}
setValue(dCurrentValue);
}
/***********************************************************************
* Euro2x converts dValue from Euro to the currency which combo box
* index is provided in iIndex.
**********************************************************************/
double LCDDisplay::Euro2x(int iIndex, double dValue){
switch (iIndex){
case 0: // Euro
return(dValue);
break;
case 1: // FF: French Francs
return(dValue*FF);
break;
case 2: // DM: Deutch Mark
return(dValue*DM);
break;
}//switch (iIndex)
}// fct Eur2x
/***********************************************************************
* x2Euro converts dValue to Euro from the currency which combo box
* index is provided in iIndex.
**********************************************************************/
double LCDDisplay::x2Euro(int iIndex, double dValue){
switch (iIndex){
case 0: // Euro
return(dValue);
break;
case 1: // FF: French Francs
return(dValue/FF);
break;
case 2: // DM: Deutch Mark
return(dValue/DM);
break;
}//switch (iIndex)
}// fct x2Euro
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