camerawindow.cpp
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#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);
}