Method load

src_gui/mainwindow.cpp:171–274

load the image specified in the url

//load the image specified in the url
bool MainWindow::load(QUrl url) {
    if(!url.isValid()) {
        throw "[load] invalid url!";
        return false;
    }

    QFileInfo file(url.toLocalFile());

    if(file.isDir()) {
        loadAllFromDir(url);
        return false;
    }

    ui->statusBar->showMessage("loading Image: " + url.fileName());

    //load the image
    input = QImage(url.toLocalFile());

    if(input.isNull()) {
        QString errorMessage("Image not loaded!");

        if(file.suffix().toLower() == "tga") {
            errorMessage.append("\nOnly uncompressed TGA files are supported.");
        }
        else {
            errorMessage.append("\nMost likely the image format is not supported.");
        }

        ui->statusBar->showMessage("Error: Image " + url.fileName() + " NOT loaded!", 5000);
        QMessageBox::information(this, "Error while loading image", errorMessage);
        return false;
    }

    //store the path the image was loaded from (for saving later)
    if(exportPath.isEmpty())
        setExportPath(url.adjusted(QUrl::RemoveFilename));
    loadedImagePath = url;

    //enable ui buttons
    ui->pushButton_calcNormal->setEnabled(true);
    ui->pushButton_calcSpec->setEnabled(true);
    ui->pushButton_calcDisplace->setEnabled(true);
    ui->pushButton_calcSsao->setEnabled(true);
    ui->spinBox_normalmapSize->setEnabled(true);
    enableAutoupdate(true);
    
    //extract R/G/B/A channels
    const int h = ui->label_channelRed->height();
    QImage inputSmall(input.scaled(h, h, Qt::KeepAspectRatio));
    IntensityMap red(inputSmall, IntensityMap::MAX, true, false, false, false);
    IntensityMap green(inputSmall, IntensityMap::MAX, false, true, false, false);
    IntensityMap blue(inputSmall, IntensityMap::MAX, false, false, true, false);
    IntensityMap alpha(inputSmall, IntensityMap::MAX, false, false, false, true);
    ui->label_channelRGBA->setPixmap(QPixmap::fromImage(inputSmall));
    ui->label_channelRed->setPixmap(QPixmap::fromImage(red.convertToQImage()));
    ui->label_channelGreen->setPixmap(QPixmap::fromImage(green.convertToQImage()));
    ui->label_channelBlue->setPixmap(QPixmap::fromImage(blue.convertToQImage()));
    ui->label_channelAlpha->setPixmap(QPixmap::fromImage(alpha.convertToQImage()));