#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <stdexcept>
#include <QWindow>
#include <QScreen>
#include <QTextStream>
#include <QDesktopWidget>

MainWindow::MainWindow(QWidget *parent) :
  QMainWindow(parent),
  ui(new Ui::MainWindow)
{
  ui->setupUi(this);
  connect(ui->queryBtn, SIGNAL(clicked()), this, SLOT(queryClicked()));
  connect(ui->toggleFullscreen, SIGNAL(clicked()), this, SLOT(toggleFullscreen()));
}

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

void MainWindow::queryClicked()
{
  QString txt;
  QTextStream stream(&txt);

  //
  QRect r = window()->windowHandle()->screen()->geometry();
  stream << "left: " << r.left() << ", top: " << r.top()
         << ", width: " << r.width() << ", height: " << r.height();
  ui->messageLabel->setText(txt);

  txt.clear();

  //
  int num = QApplication::desktop()->screenNumber(this);
  r = QApplication::desktop()->screenGeometry(num);
  stream << "screen num: " << num << ": " << "left: " << r.left() << ", top: "
         << r.top() << ", width: " << r.width() << ", height: " << r.height();
  ui->selfCalculate->setText(txt);
}

void MainWindow::toggleFullscreen()
{
  if (isFullScreen())
  {
    showNormal();
  }
  else
  {
    showFullScreen();
  }
}