qtapp/barcode2cash/mainwindow.cpp

   1 #include "mainwindow.h"
   2 #include "ui_mainwindow.h"
   3 #include <QCameraInfo>
   4 #include <QCameraImageCapture>
   5 #include <QCameraViewfinder>
   6
   7 bool checkCameraAvailability()
   8 {
   9     if (QCameraInfo::availableCameras().count() > 0)
  10         return true;
  11     else
  12         return false;
  13 }
  14
  15 MainWindow::MainWindow(QWidget *parent) :
  16     QMainWindow(parent),
  17     ui(new Ui::MainWindow)
  18 {
  19     ui->setupUi(this);
  20
  21     QCameraInfo info = QCameraInfo::defaultCamera();
  22     if (!info.isNull()) {
  23         QCamera* camera = new QCamera(info);
  24         camera->setCaptureMode(QCamera::CaptureStillImage);
  25         QCameraViewfinder* viewfinder = new QCameraViewfinder;
  26         camera->setViewfinder(viewfinder);
  27         viewfinder->show();
  28         QCameraImageCapture imageCapture(camera);
  29         camera->start();
  30         camera->searchAndLock();
  31         imageCapture.capture("test.png");
  32         camera->unlock();
  33         //delete camera;
  34     }
  35
  36     ui->statusBar->showMessage(tr("There are %1 cameras").arg(checkCameraAvailability()));
  37 }
  38
  39 MainWindow::~MainWindow()
  40 {
  41     delete ui;
  42 }