- Qt 5.3
- Qt NFC
- NDEF Editor Example
- mimeimagerecordeditor.cpp Example File
- Qt 5.3.2 Reference Documentation

# mimeimagerecordeditor.cpp Example File

ndefeditor/mimeimagerecordeditor.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
    ** Contact: http://www.qt-project.org/legal
    **
    ** This file is part of the QtNfc module of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
    **     of its contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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    ****************************************************************************/

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

    #include <QBuffer>
    #include <QFileDialog>
    #include <QImageReader>

    static QString imageFormatToMimeType(const QByteArray &format)
    {
        if (format == "bmp")
            return QLatin1String("image/bmp");
        else if (format == "gif")
            return QLatin1String("image/gif");
        else if (format == "jpg" || format == "jpeg")
            return QLatin1String("image/jpeg");
        else if (format == "mng")
            return QLatin1String("video/x-mng");
        else if (format == "png")
            return QLatin1String("image/png");
        else if (format == "pbm")
            return QLatin1String("image/x-portable-bitmap");
        else if (format == "pgm")
            return QLatin1String("image/x-portable-graymap");
        else if (format == "ppm")
            return QLatin1String("image/x-portable-pixmap");
        else if (format == "tiff")
            return QLatin1String("image/tiff");
        else if (format == "xbm")
            return QLatin1String("image/x-xbitmap");
        else if (format == "xpm")
            return QLatin1String("image/x-xpixmap");
        else if (format == "svg")
            return QLatin1String("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.setType(mimeType.toLatin1());
        m_record.setPayload(imageData);
    }