103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
#include "adjustpicturedialog.h"
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#include "ui_adjustpicturedialog.h"
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#include "utils/utils.h"
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#include <opencv2/imgcodecs.hpp>
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#include <opencv2/imgproc.hpp>
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#include <string>
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#include <opencv2/core/mat.hpp>
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#include <QFileDialog>
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#include <QMessageBox>
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#include <zbar.h>
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AdjustPictureDialog::AdjustPictureDialog(QWidget *parent, std::string imagePath)
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: QDialog(parent)
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, ui(new Ui::AdjustPictureDialog)
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, pixmap(QString::fromStdString(imagePath))
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, img(pixmap.toImage()){
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ui->setupUi(this);
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computeContrastLookupTable();
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scene = new QGraphicsScene(this);
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ui->graphicsView->setScene(scene);
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scene->addPixmap(pixmap);
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}
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AdjustPictureDialog::~AdjustPictureDialog() {
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delete ui;
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}
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void AdjustPictureDialog::accept() {
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QPixmap pixMap = ui->graphicsView->grab();
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pixMap.save(QString::fromStdString(get_path_relative_to_home(".local/share/checks_parser/temp.png")));
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std::string result = decode();
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if (result == "") {
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QMessageBox infoDialog;
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infoDialog.setText(tr("QR code was not detected on that image. Please edit it again or enter data manually"));
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infoDialog.setIcon(QMessageBox::Warning);
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infoDialog.setWindowTitle(tr("No QR code"));
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infoDialog.exec();
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} else {
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emit decodedData(result);
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QDialog::accept();
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}
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}
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std::string AdjustPictureDialog::decode() {
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cv::Mat im = cv::imread(get_path_relative_to_home(".local/share/checks_parser/temp.png"));
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zbar::ImageScanner scanner;
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scanner.set_config(zbar::ZBAR_QRCODE, zbar::ZBAR_CFG_ENABLE, 1);
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cv::Mat imGray;
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cv::cvtColor(im, imGray, cv::COLOR_BGR2GRAY);
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zbar::Image image(im.cols, im.rows, "Y800", (uchar *) imGray.data, im.cols * im.rows);
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scanner.scan(image);
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std::string result = "";
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for (zbar::Image::SymbolIterator symbol = image.symbol_begin(); symbol != image.symbol_end(); ++symbol) {
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result = symbol->get_data();
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}
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return result;
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}
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void AdjustPictureDialog::computeContrastLookupTable() {
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for (int contrastValue = 0; contrastValue < 100; ++contrastValue) {
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double contrast = contrastValue / 50.0;
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for (int i = 0; i < 256; ++i) {
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unsigned short correctedValue = std::clamp(static_cast<int>(128 + contrast * (i - 128)), 0, 255);
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contrastLUT[contrastValue].push_back(correctedValue);
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}
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}
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}
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void AdjustPictureDialog::on_contrastSlider_sliderMoved(int position) {
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QImage image = img.copy();
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uint32_t* pixels = reinterpret_cast<uint32_t*>(image.bits());
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int width = image.width();
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int height = image.height();
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for (int y = 0; y < height; ++y) {
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for (int x = 0; x < width; ++x) {
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QRgb rgb = pixels[y * width + x];
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pixels[y * width + x] = qRgba(
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contrastLUT[position][qRed(rgb)],
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contrastLUT[position][qGreen(rgb)],
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contrastLUT[position][qBlue(rgb)],
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qAlpha(rgb));
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}
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}
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scene->clear();
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scene->addPixmap(QPixmap::fromImage(image));
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}
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