/*
intensite.h
-------------
*/
#ifndef H_INTENSITE_H
#define H_INTENSITE_H
 
#include <QWidget>
#include <QDialog>
#include <QPushButton>
#include <QLabel>
#include <QLineEdit>
#include <QString>
#include <QVBoxLayout>
#include <QHBoxLayout>
 
class Intensite : public QDialog {
 
        Q_OBJECT
 
        public:
                Intensite(QWidget *parent=0);
        
        public slots:
                void calculI();
                
        private:
        
                QPushButton *m_calculer;
                QLabel *label_tension, *label_resistance; 
                QLabel *label_resultat;
                QString string_tension, string_resistance, string_resultat, string_inLabel;
                QLineEdit *m_tension, *m_resistance;
                QVBoxLayout *vLayout;
                QHBoxLayout *hLayoutTension, *hLayoutResistance;
                double d_tension, d_resistance;
 
};
 
#endif

/*
intensite.cpp
----------------
*/
 
#include "intensite.h"
 
Intensite::Intensite(QWidget *parent) : QDialog(parent)
{
        setFixedSize(500, 500);
        setWindowTitle(tr(" Intensité d'un courant continu"));
 
    label_tension = new QLabel("Tension : ");
        m_tension   = new QLineEdit;
        
        label_resistance = new QLabel("Resistance : ");
        m_resistance = new QLineEdit;
 
        m_calculer = new QPushButton(tr("Calculer"));
        connect(m_calculer, SIGNAL(clicked()), this, SLOT(calculI()));
        
        string_tension = m_tension->text();
        string_resistance = m_resistance->text();
        d_tension = string_tension.toDouble();
        d_resistance = string_resistance.toDouble();
        
        hLayoutTension = new QHBoxLayout;
        hLayoutTension->addWidget(label_tension);
        hLayoutTension->addWidget(m_tension);
        
        hLayoutResistance = new QHBoxLayout;
        hLayoutResistance->addWidget(label_resistance);
        hLayoutResistance->addWidget(m_resistance);
        
        vLayout = new QVBoxLayout;
        vLayout->addLayout(hLayoutTension);
        vLayout->addLayout(hLayoutResistance);
        vLayout->addWidget(m_calculer);
        
        setLayout(vLayout);
}
 
void Intensite::calculI()
{
        double resultat   = d_tension/ d_resistance;
        
        string_resultat.setNum(resultat);
        string_inLabel = "I = U : R \nI = "+string_tension+" : "+string_resistance+"\nI = "+string_resultat;
        
        label_resultat = new QLabel(string_inLabel);
        
        vLayout->addWidget(label_resultat);
        
        setLayout(vLayout);
}