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File calc.cpp of Package sampledriver

#include "calc.h"
#include <QLayout>
#include <QLCDNumber>
#include <QSignalMapper>
#include <QString>

MyCalc::MyCalc(QWidget *parent, char *name)
{
    QPushButton *buttonNbr1 = new QPushButton("1");
    QPushButton *buttonNbr2 = new QPushButton("2");
    QPushButton *buttonNbr3 = new QPushButton("3");
    QPushButton *buttonNbr4 = new QPushButton("4");
    QPushButton *buttonNbr5 = new QPushButton("5");
    QPushButton *buttonNbr6 = new QPushButton("6");
    QPushButton *buttonNbr7 = new QPushButton("7");
    QPushButton *buttonNbr8 = new QPushButton("8");
    QPushButton *buttonNbr9 = new QPushButton("9");
    QPushButton *buttonNbr0 = new QPushButton("0");
    QPushButton *buttonAdd = new QPushButton("+");
    QPushButton *buttonSubtract = new QPushButton("-");
    QPushButton *buttonMultiply = new QPushButton("*");
    QPushButton *buttonDivide = new QPushButton("/");
    QPushButton *buttonEquals = new QPushButton("=");
    mp_lcdNum = new QLCDNumber(this);
    QGridLayout *GlCalcGrid = new QGridLayout(this);
    m_iValue1 = 0;
    m_iValue2 = 0;
    qstrOperator = "";

GlCalcGrid->addWidget(mp_lcdNum, 1, 1, 1, 4);
    GlCalcGrid->addWidget(buttonNbr1, 2, 1);
    GlCalcGrid->addWidget(buttonNbr2, 2, 2);
    GlCalcGrid->addWidget(buttonNbr3, 2, 3);
    GlCalcGrid->addWidget(buttonNbr4, 3, 1);
    GlCalcGrid->addWidget(buttonNbr5, 3, 2);
    GlCalcGrid->addWidget(buttonNbr6, 3, 3);
    GlCalcGrid->addWidget(buttonNbr7, 4, 1);
    GlCalcGrid->addWidget(buttonNbr8, 4, 2);
    GlCalcGrid->addWidget(buttonNbr9, 4, 3);
    GlCalcGrid->addWidget(buttonNbr0, 5, 1, 1, 2);
    GlCalcGrid->addWidget(buttonAdd, 2, 4);
    GlCalcGrid->addWidget(buttonSubtract, 3, 4);
    GlCalcGrid->addWidget(buttonMultiply, 4, 4);
    GlCalcGrid->addWidget(buttonDivide, 5, 4);
    GlCalcGrid->addWidget(buttonEquals, 5, 3);

QSignalMapper *buttonMapper = new QSignalMapper(this);
    QSignalMapper *operatorMapper = new QSignalMapper(this);

buttonMapper->setMapping(buttonNbr1, 1);
    buttonMapper->setMapping(buttonNbr2, 2);
    buttonMapper->setMapping(buttonNbr3, 3);
    buttonMapper->setMapping(buttonNbr4, 4);
    buttonMapper->setMapping(buttonNbr5, 5);
    buttonMapper->setMapping(buttonNbr6, 6);
    buttonMapper->setMapping(buttonNbr7, 7);
    buttonMapper->setMapping(buttonNbr8, 8);
    buttonMapper->setMapping(buttonNbr9, 9);
    buttonMapper->setMapping(buttonNbr0, 0);
    operatorMapper->setMapping(buttonAdd, "+");
    operatorMapper->setMapping(buttonSubtract, "-");
    operatorMapper->setMapping(buttonMultiply, "*");
    operatorMapper->setMapping(buttonDivide, "/");
    connect(buttonNbr1, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr2, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr3, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr4, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr5, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr6, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr7, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr8, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr9, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonNbr0, SIGNAL(clicked()), buttonMapper, SLOT(map()));
    connect(buttonMapper, SIGNAL(mapped(int)), SLOT(AddNumberToLCD(int)));
    connect(buttonAdd, SIGNAL(clicked()), operatorMapper, SLOT(map()));
    connect(buttonSubtract, SIGNAL(clicked()), operatorMapper, SLOT(map()));
    connect(buttonMultiply, SIGNAL(clicked()), operatorMapper, SLOT(map()));
    connect(buttonDivide, SIGNAL(clicked()), operatorMapper, SLOT(map()));
    connect(operatorMapper, SIGNAL(mapped(QString)), SLOT(SetOperator(QString)));
    connect(buttonEquals, SIGNAL(clicked()), SLOT(Equals()));

}

void MyCalc::AddNumberToLCD(int Value)
{
    QString qstrNumber, qstrTemp;
    int iTemp = mp_lcdNum->intValue();
    if(iTemp != 0)
    {
        qstrNumber.setNum(iTemp);
        int ifiTemp = Value;
        qstrTemp.setNum(ifiTemp);
        qstrNumber += qstrTemp;
        iTemp = qstrNumber.toInt();
    }
    else
        iTemp = Value;

mp_lcdNum->display(iTemp);
}
void MyCalc::SetOperator(QString qstrTemp)
{
    int iTemp = mp_lcdNum->intValue();
    switch (qstrOperator.at(0).toAscii())
    {
        case '+':
            m_iValue1 += iTemp;
            break;

case '-':
            m_iValue1 -= iTemp;
            break;

case '*':
            m_iValue1 *= iTemp;
            break;

case '/':
            m_iValue1 /= iTemp;
            break;

default:
            m_iValue1 = iTemp;
    }
    mp_lcdNum->display(m_iValue1);

qstrOperator = qstrTemp;
 }

void MyCalc::Equals()
{
    m_iValue2 = mp_lcdNum->intValue();
    if(qstrOperator.compare("+", qstrOperator) == 0)
    {
        m_iValue2 = mp_lcdNum->intValue();
        int iTemp;
        iTemp = m_iValue1 + m_iValue2;
        mp_lcdNum->display(iTemp);
    }
    if(qstrOperator.compare("-", qstrOperator) == 0)
    {
        m_iValue2 = mp_lcdNum->intValue();
        int iTemp;
        iTemp = m_iValue1 - m_iValue2;
        mp_lcdNum->display(iTemp);
    }
    if(qstrOperator.compare("*", qstrOperator) == 0)
    {
        m_iValue2 = mp_lcdNum->intValue();
        int iTemp;
        iTemp = m_iValue1 * m_iValue2;
        mp_lcdNum->display(iTemp);
    }
    if(qstrOperator.compare("/", qstrOperator) == 0)
    {
        m_iValue2 = mp_lcdNum->intValue();
        int iTemp;
        iTemp = m_iValue1 / m_iValue2;
        mp_lcdNum->display(iTemp);
    }
}

void MyCalc::Clear()
{
    mp_lcdNum->display(0);
    m_iValue1 = 0;
    m_iValue2 = 0;
}

MyCalc::~MyCalc()
{}

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File calc.cpp of Package sampledriver

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