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https://github.com/wownero/wowlet.git
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123 lines
3.8 KiB
C++
123 lines
3.8 KiB
C++
// SPDX-License-Identifier: BSD-3-Clause
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// Copyright (c) 2020-2021, The Monero Project.
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#include "QrCodeScanDialog.h"
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#include "ui_QrCodeScanDialog.h"
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#include <QMessageBox>
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#include <QtMultimedia/QCamera>
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#include <QtMultimedia/QCameraInfo>
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QrCodeScanDialog::QrCodeScanDialog(QWidget *parent)
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: QDialog(parent)
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, ui(new Ui::QrCodeScanDialog)
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{
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ui->setupUi(this);
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this->setWindowTitle("Scan QR Code");
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QPixmap pixmap = QPixmap(":/assets/images/warning.png");
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ui->icon_warning->setPixmap(pixmap.scaledToWidth(32, Qt::SmoothTransformation));
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m_cameras = QCameraInfo::availableCameras();
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if (m_cameras.count() < 1) {
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QMessageBox::warning(parent, "QR code scanner", "No available cameras found.");
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this->close();
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}
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for (const auto &camera : m_cameras) {
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ui->combo_camera->addItem(camera.deviceName());
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}
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connect(ui->combo_camera, QOverload<int>::of(&QComboBox::currentIndexChanged), this, &QrCodeScanDialog::onCameraSwitched);
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this->onCameraSwitched(0);
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m_thread = new QrScanThread(this);
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m_thread->start();
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connect(m_thread, &QrScanThread::decoded, this, &QrCodeScanDialog::onDecoded);
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connect(m_thread, &QrScanThread::notifyError, this, &QrCodeScanDialog::notifyError);
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connect(&m_imageTimer, &QTimer::timeout, this, &QrCodeScanDialog::takeImage);
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m_imageTimer.start(500);
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}
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void QrCodeScanDialog::onCameraSwitched(int index) {
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if (index >= m_cameras.size()) {
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return;
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}
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m_camera.reset(new QCamera(m_cameras.at(index)));
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auto captureMode = QCamera::CaptureStillImage;
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if (m_camera->isCaptureModeSupported(captureMode)) {
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m_camera->setCaptureMode(captureMode);
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}
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connect(m_camera.data(), QOverload<QCamera::Error>::of(&QCamera::error), this, &QrCodeScanDialog::displayCameraError);
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connect(m_camera.data(), &QCamera::statusChanged, [this](QCamera::Status status){
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bool unloaded = (status == QCamera::Status::UnloadedStatus);
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ui->frame_unavailable->setVisible(unloaded);
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});
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m_imageCapture.reset(new QCameraImageCapture(m_camera.data()));
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if (!m_imageCapture->isCaptureDestinationSupported(QCameraImageCapture::CaptureToBuffer)) {
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qDebug() << "Capture to buffer is NOT supported";
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}
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m_imageCapture->setCaptureDestination(QCameraImageCapture::CaptureToBuffer);
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connect(m_imageCapture.data(), &QCameraImageCapture::imageAvailable, this, &QrCodeScanDialog::processAvailableImage);
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connect(m_imageCapture.data(), QOverload<int, QCameraImageCapture::Error, const QString &>::of(&QCameraImageCapture::error),
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this, &QrCodeScanDialog::displayCaptureError);
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m_camera->setViewfinder(ui->viewfinder);
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m_camera->start();
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}
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void QrCodeScanDialog::displayCaptureError(int id, const QCameraImageCapture::Error error, const QString &errorString)
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{
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Q_UNUSED(id);
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Q_UNUSED(error);
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QMessageBox::warning(this, "Image Capture Error", errorString);
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}
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void QrCodeScanDialog::displayCameraError()
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{
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QMessageBox::warning(this, "Camera Error", m_camera->errorString());
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}
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void QrCodeScanDialog::processAvailableImage(int id, const QVideoFrame &frame) {
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Q_UNUSED(id);
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QImage img = frame.image();
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img.convertTo(QImage::Format_RGB32);
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m_thread->addImage(img);
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}
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void QrCodeScanDialog::takeImage()
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{
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if (m_imageCapture->isReadyForCapture()) {
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m_imageCapture->capture();
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}
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}
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void QrCodeScanDialog::onDecoded(int type, const QString &data) {
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decodedString = data;
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this->accept();
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}
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void QrCodeScanDialog::notifyError(const QString &msg) {
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qDebug() << "QrScanner error: " << msg;
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}
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QrCodeScanDialog::~QrCodeScanDialog()
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{
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m_thread->stop();
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m_thread->quit();
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if (!m_thread->wait(5000))
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{
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m_thread->terminate();
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m_thread->wait();
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}
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delete ui;
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} |