mobile / cpp

  #include "camerawindow.h"
  #include "ui_camerawindow.h"
  
  CameraWindow::CameraWindow(QWidget *parent) :
      QMainWindow(parent),
      ui(new Ui::CameraWindow),
      hasResolution(false)
  {
      ui->setupUi(this);
  
      cameraSurface = new CameraSurface();
      camera = new QCamera();
      capture = new QCameraImageCapture( camera );
      camera->setViewfinder(cameraSurface);
      camera->setCaptureMode(QCamera::CaptureStillImage);
      camera->start();
  
      zxing = new QZXing( QZXing::DecoderFormat_QR_CODE, this );

      connect(zxing, SIGNAL(tagFound(QString)), this, SLOT(showResult(QString)));

      connect(cameraSurface, SIGNAL(novoFrame(QByteArray&,int,int)), this, SLOT(frameHandler(QByteArray&,int,int)));
  }
  
  CameraWindow::~CameraWindow()
  {
      delete ui;
      delete cameraSurface;
      delete camera;
      delete capture;
      delete viewfinder;
      delete zxing;
      delete img;
      delete buffer;
  }
  
  void CameraWindow::frameHandler(QByteArray &buff, int w, int h)
  {
      if (!hasResolution) {
          img = new QImage( w, h, QImage::Format_RGB32 );
          hasResolution = true;
      }
  
      u_int32_t* data = (u_int32_t*)buff.data();
      for(int y = 0; y < h; ++y) {
          QRgb* scan = (QRgb*)img->scanLine(y);
  
          for(int x = 0; x < w; ++x) {
              scan[x] = data[y * w + x];
          }
      }
  
      zxing->decodeImage( *img, w, h, true );
  
      QImage imgTmp = img->scaled(w*.30, h*.30);

      ui->label->setPixmap(QPixmap::fromImage(imgTmp));

      buff.clear();
  }

  
  void CameraWindow::closeEvent(QCloseEvent *event)
  {
      emit close();
      event->accept();
  }
  
  void CameraWindow::showResult(QString result)
  {
      ui->label_2->setText(result);
  }