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

bool checkCameraAvailability()
{
    if (QCameraInfo::availableCameras().count() > 0)
        return true;
    else
        return false;
}

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    QCameraInfo info = QCameraInfo::defaultCamera();
    if (!info.isNull()) {
        camera = new QCamera(info);
        camera->setCaptureMode(QCamera::CaptureStillImage);
        viewfinder = new QCameraViewfinder;
        camera->setViewfinder(viewfinder);
        viewfinder->show();
        imageCapture = new QCameraImageCapture(camera);
        connect(imageCapture, SIGNAL(readyForCaptureChanged(bool)), SLOT(updateCameraInfo()));
        updateCameraInfo();
        connect(ui->pbCapture, SIGNAL(clicked()), SLOT(capture()));
    }


    ui->statusBar->showMessage(tr("There are %1 cameras").arg(checkCameraAvailability()));

}

MainWindow::~MainWindow() {
    delete imageCapture;
    delete viewfinder;
    delete camera;
    delete ui;
}


void MainWindow::updateCameraInfo() {
    ui->labCameraReady->setText(imageCapture->isReadyForCapture() ? "ready" : "not ready");
}


void MainWindow::capture() {
    camera->start();
    camera->searchAndLock();
    imageCapture->capture("test.png");
    camera->unlock();
}