#include "mainwindow.h"
#include "ui_mainwindow.h"


static QPalette red, green;
static int index_left, index_center, index_right;

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    ///init
    index_left = 0;
    index_center = 0;
    index_right = 0;
    red.setColor(QPalette::Background, QColor(Qt::red));
    green.setColor(QPalette::Background, QColor(Qt::green));
    ///init
    result();
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::result()
{
    ui->right_operator->show();
    switch (index_center)
    {
    case 0:
        if (index_left && index_right) this->setPalette(green);
        else this->setPalette(red);
        break;
    case 1:
        if (!index_left && !index_right) this->setPalette(red);
        else this->setPalette(green);
        break;
    case 2:
        ui->right_operator->hide();
        if (index_left) this->setPalette(green);
        else this->setPalette(red);
        break;
    case 3:
        if (index_left && !index_right) this->setPalette(red);
        else this->setPalette(green);
        break;
    case 4:
        if ((index_left && index_right) || (!index_left && !index_right)) this->setPalette(green);
        else this->setPalette(red);
        break;
    case 5:
        if ((index_left && !index_right) || (!index_left && index_right)) this->setPalette(green);
        else this->setPalette(red);
        break;
    }
}

void MainWindow::on_left_operator_activated(int index)
{
    index_left = index;
    result();
}

void MainWindow::on_right_operator_activated(int index)
{
    index_right = index;
    result();
}

void MainWindow::on_operators_activated(int index)
{
    index_center = index;
    result();
}