Calculator::Calculator(QWidget *parent) :
QDialog(parent),
ui(new Ui::Calculator)
{
clear = false;
ui->setupUi(this);
connect(ui->num_0, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_1, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_2, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_3, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_4, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_5, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_6, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_7, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_8, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->num_9, SIGNAL(clicked()), this, SLOT(numberButtonClicked()));
connect(ui->expr_add, SIGNAL(clicked()), this, SLOT(operationButtonClicked()));
connect(ui->expr_sub, SIGNAL(clicked()), this, SLOT(operationButtonClicked()));
connect(ui->expr_mul, SIGNAL(clicked()), this, SLOT(operationButtonClicked()));
connect(ui->expr_div, SIGNAL(clicked()), this, SLOT(operationButtonClicked()));
connect(ui->paren_begin, SIGNAL(clicked()), this, SLOT(parenthesisButtonClicked()));
connect(ui->paren_end, SIGNAL(clicked()), this, SLOT(parenthesisButtonClicked()));
connect(ui->func_sin, SIGNAL(clicked()), this, SLOT(functionButtonClicked()));
connect(ui->func_cos, SIGNAL(clicked()), this, SLOT(functionButtonClicked()));
connect(ui->func_tan, SIGNAL(clicked()), this, SLOT(functionButtonClicked()));
connect(ui->func_sinh, SIGNAL(clicked()), this, SLOT(functionButtonClicked()));
connect(ui->func_cosh, SIGNAL(clicked()), this, SLOT(functionButtonClicked()));
connect(ui->func_tanh, SIGNAL(clicked()), this, SLOT(functionButtonClicked()));
connect(ui->pow_2, SIGNAL(clicked()), this, SLOT(powerButtonClicked()));
connect(ui->pow_3, SIGNAL(clicked()), this, SLOT(powerButtonClicked()));
connect(ui->pow_n, SIGNAL(clicked()), this, SLOT(powerButtonClicked()));
connect(ui->pow_half, SIGNAL(clicked()), this, SLOT(powerButtonClicked()));
connect(ui->pow_minus_one, SIGNAL(clicked()), this, SLOT(powerButtonClicked()));
connect(ui->memory_clear, SIGNAL(clicked()), this, SLOT(memoryButtonClicked()));
connect(ui->memory_save, SIGNAL(clicked()), this, SLOT(memoryButtonClicked()));
connect(ui->memory_recall, SIGNAL(clicked()), this, SLOT(memoryButtonClicked()));
connect(ui->backspace, SIGNAL(clicked()), this, SLOT(removeLastChar()));
connect(ui->num_dot, SIGNAL(clicked()), this, SLOT(dotButtonClicked()));
connect(ui->eval, SIGNAL(clicked()), this, SLOT(evaluate()));
connect(ui->factorial, SIGNAL(clicked()), this, SLOT(factButtonClicked()));
connect(ui->all_clear, SIGNAL(clicked()), this, SLOT(acButtonClicked()));
// reset for the first time
acButtonClicked();
setWindowTitle("Minhaz Calc");
}
QLayout *Calculator::setupNumberButtons()
{
QGridLayout *gridNumber = new QGridLayout;
for( int i = 0; i <= 9; i++ ){
QPushButton *button = new QPushButton(QString::number(i),this);
button->setObjectName(QString("button%1").arg(i));
int row = 0, col = 0, rowspan = 1, colspan = 1;
if( i == 0 ){
row = 3;
col = 0;
colspan = 3;
}
else{
row = 2 - (i - 1) / 3;
col = (i - 1) % 3;
}
gridNumber->addWidget(button,row,col,rowspan,colspan);
connect(button,SIGNAL(clicked()),this,SLOT(numberButtonClicked()));
m_numberMap[button] = i;
}
return gridNumber;
}