/* ============================================================
 *
 * This file is a part of digiKam project
 * http://www.digikam.org
 *
 * Date        : 2007-08-02
 * Description : save JPEG 2000 image options.
 *
 * Copyright (C) 2007-2016 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */

#include "jp2ksettings.h"

// Qt includes

#include <QString>
#include <QLabel>
#include <QCheckBox>
#include <QLayout>
#include <QGridLayout>
#include <QApplication>
#include <QStyle>

// KDE includes

#include <klocalizedstring.h>

// Local includes

#include "dnuminput.h"

namespace Digikam
{

class JP2KSettings::Private
{

public:

    Private()
    {
        JPEG2000Grid             = 0;
        labelJPEG2000compression = 0;
        JPEG2000compression      = 0;
        JPEG2000LossLess         = 0;
    }

    QGridLayout*  JPEG2000Grid;

    QLabel*       labelJPEG2000compression;

    QCheckBox*    JPEG2000LossLess;

    DIntNumInput* JPEG2000compression;
};

JP2KSettings::JP2KSettings(QWidget* const parent)
    : QWidget(parent), d(new Private)
{
    setAttribute(Qt::WA_DeleteOnClose);

    const int spacing = QApplication::style()->pixelMetric(QStyle::PM_DefaultLayoutSpacing);

    d->JPEG2000Grid     = new QGridLayout(this);
    d->JPEG2000LossLess = new QCheckBox(i18n("Lossless JPEG 2000 files"), this);

    d->JPEG2000LossLess->setWhatsThis(i18n("<p>Toggle lossless compression for JPEG 2000 images.</p>"
                                           "<p>If this option is enabled, a lossless method will be used "
                                           "to compress JPEG 2000 pictures.</p>"));

    d->JPEG2000compression = new DIntNumInput(this);
    d->JPEG2000compression->setDefaultValue(75);
    d->JPEG2000compression->setRange(1, 100, 1);
    d->labelJPEG2000compression = new QLabel(i18n("JPEG 2000 quality:"), this);

    d->JPEG2000compression->setWhatsThis(i18n("<p>The quality value for JPEG 2000 images:</p>"
                                              "<p><b>1</b>: low quality (high compression and small "
                                              "file size)<br/>"
                                              "<b>50</b>: medium quality<br/>"
                                              "<b>75</b>: good quality (default)<br/>"
                                              "<b>100</b>: high quality (no compression and "
                                              "large file size)</p>"
                                              "<p><b>Note: JPEG 2000 is not a lossless image "
                                              "compression format when you use this setting.</b></p>"));

    d->JPEG2000Grid->addWidget(d->JPEG2000LossLess,         0, 0, 1, 2);
    d->JPEG2000Grid->addWidget(d->labelJPEG2000compression, 1, 0, 1, 2);
    d->JPEG2000Grid->addWidget(d->JPEG2000compression,      2, 0, 1, 2);
    d->JPEG2000Grid->setColumnStretch(1, 10);
    d->JPEG2000Grid->setRowStretch(3, 10);
    d->JPEG2000Grid->setContentsMargins(spacing, spacing, spacing, spacing);
    d->JPEG2000Grid->setSpacing(spacing);

    connect(d->JPEG2000LossLess, SIGNAL(toggled(bool)),
            this, SLOT(slotToggleJPEG2000LossLess(bool)));

    connect(d->JPEG2000LossLess, SIGNAL(toggled(bool)),
            this, SIGNAL(signalSettingsChanged()));

    connect(d->JPEG2000compression, SIGNAL(valueChanged(int)),
            this, SIGNAL(signalSettingsChanged()));
}

JP2KSettings::~JP2KSettings()
{
    delete d;
}

void JP2KSettings::setCompressionValue(int val)
{
    d->JPEG2000compression->setValue(val);
}

int JP2KSettings::getCompressionValue() const
{
    return d->JPEG2000compression->value();
}

void JP2KSettings::setLossLessCompression(bool b)
{
    d->JPEG2000LossLess->setChecked(b);
    slotToggleJPEG2000LossLess(d->JPEG2000LossLess->isChecked());
}

bool JP2KSettings::getLossLessCompression() const
{
    return d->JPEG2000LossLess->isChecked();
}

void JP2KSettings::slotToggleJPEG2000LossLess(bool b)
{
    d->JPEG2000compression->setEnabled(!b);
    d->labelJPEG2000compression->setEnabled(!b);
}

}  // namespace Digikam
