mimeimagerecordeditor.cpp Example File

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 #include "mimeimagerecordeditor.h"
 #include "ui_mimeimagerecordeditor.h"

 #include <QtGui/QImageReader>
 #include <QtWidgets/QFileDialog>
 #include <QtCore/QBuffer>

 static QString imageFormatToMimeType(const QByteArray &format)
 {
     if (format == "bmp")
         return QStringLiteral("image/bmp");
     else if (format == "gif")
         return QStringLiteral("image/gif");
     else if (format == "jpg" || format == "jpeg")
         return QStringLiteral("image/jpeg");
     else if (format == "mng")
         return QStringLiteral("video/x-mng");
     else if (format == "png")
         return QStringLiteral("image/png");
     else if (format == "pbm")
         return QStringLiteral("image/x-portable-bitmap");
     else if (format == "pgm")
         return QStringLiteral("image/x-portable-graymap");
     else if (format == "ppm")
         return QStringLiteral("image/x-portable-pixmap");
     else if (format == "tiff")
         return QStringLiteral("image/tiff");
     else if (format == "xbm")
         return QStringLiteral("image/x-xbitmap");
     else if (format == "xpm")
         return QStringLiteral("image/x-xpixmap");
     else if (format == "svg")
         return QStringLiteral("image/svg+xml");
     else
         return QString();
 }

 MimeImageRecordEditor::MimeImageRecordEditor(QWidget *parent) :
     QWidget(parent),
     ui(new Ui::MimeImageRecordEditor)
 {
     ui->setupUi(this);
 }

 MimeImageRecordEditor::~MimeImageRecordEditor()
 {
     delete ui;
 }

 void MimeImageRecordEditor::setRecord(const QNdefRecord &record)
 {
     m_record = record;

     QByteArray data = record.payload();
     QBuffer buffer(&data);
     buffer.open(QIODevice::ReadOnly);

     QImageReader reader(&buffer);

     ui->mimeImageType->setText(imageFormatToMimeType(reader.format()));

     ui->mimeImageImage->setPixmap(QPixmap::fromImage(reader.read()));
     ui->mimeImageFile->clear();
 }

 QNdefRecord MimeImageRecordEditor::record() const
 {
     return m_record;
 }

 void MimeImageRecordEditor::on_mimeImageOpen_clicked()
 {
     QString mimeDataFile = QFileDialog::getOpenFileName(this, tr("Select Image File"));
     if (mimeDataFile.isEmpty())
         return;

     QFile imageFile(mimeDataFile);
     if (!imageFile.open(QIODevice::ReadOnly)) {
         ui->mimeImageFile->clear();
         ui->mimeImageImage->clear();
     }

     QByteArray imageData = imageFile.readAll();

     QBuffer buffer(&imageData);
     buffer.open(QIODevice::ReadOnly);

     QImageReader reader(&buffer);
     QString mimeType = imageFormatToMimeType(reader.format());
     ui->mimeImageType->setText(mimeType);

     QImage image = reader.read();

     ui->mimeImageFile->setText(mimeDataFile);
     ui->mimeImageImage->setPixmap(QPixmap::fromImage(image));

     m_record.setTypeNameFormat(QNdefRecord::Mime);
     m_record.setType(mimeType.toLatin1());
     m_record.setPayload(imageData);
 }