/*
 * LCD Image Converter. Converts images and fonts for embedded applications.
 * Copyright (C) 2012 riuson
 * mailto: riuson@gmail.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 3 of the License, 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/
 */

#include "imageoptions.h"
//-----------------------------------------------------------------------------
#include <QSettings>
#include <QtXml>
#include <QDomDocument>
//-----------------------------------------------------------------------------
const QString ImageOptions::GroupName = QString("image");
const QString ImageOptions::FieldBytesOrder = QString("bytesOrder");
const QString ImageOptions::FieldBlockSize = QString("blockSize");
const QString ImageOptions::FieldBlockDefaultOnes = QString("blockDefaultOnes");
const QString ImageOptions::FieldSplitToRows = QString("splitToRows");
const QString ImageOptions::FieldCompressionRle = QString("compressionRle");
const QString ImageOptions::FieldCompressionRleMinLength = QString("compressionRleMinLength");
const QString ImageOptions::FieldBlockPrefix = QString("blockPrefix");
const QString ImageOptions::FieldBandWidth = QString("bandWidth");
const QString ImageOptions::FieldBlockSuffix = QString("blockSuffix");
const QString ImageOptions::FieldBlockDelimiter = QString("blockDelimiter");
//-----------------------------------------------------------------------------
ImageOptions::ImageOptions(QObject *parent) :
    QObject(parent)
{
    this->mSplitToRows = true;
    this->mBytesOrder = BytesOrderLittleEndian;
    this->mBlockSize = Data8;
    this->mBlockDefaultOnes = false;
    this->mCompressionRle = false;
    this->mCompressionRleMinLength = 2;
    this->mBlockPrefix = "0x";
    this->mBlockSuffix = "";
    this->mBlockDelimiter = ", ";
}
//-----------------------------------------------------------------------------
bool ImageOptions::splitToRows() const
{
    return this->mSplitToRows;
}
//-----------------------------------------------------------------------------
BytesOrder ImageOptions::bytesOrder() const
{
    return this->mBytesOrder;
}
//-----------------------------------------------------------------------------
DataBlockSize ImageOptions::blockSize() const
{
    if (this->mBlockSize <= Data32)
    {
        return this->mBlockSize;
    }
    return Data32;
}
//-----------------------------------------------------------------------------
bool ImageOptions::blockDefaultOnes() const
{
    return this->mBlockDefaultOnes;
}
//-----------------------------------------------------------------------------
bool ImageOptions::compressionRle() const
{
    return this->mCompressionRle;
}
//-----------------------------------------------------------------------------
quint32 ImageOptions::compressionRleMinLength() const
{
    return this->mCompressionRleMinLength;
}
//-----------------------------------------------------------------------------
QString ImageOptions::blockPrefix() const
{
    return this->mBlockPrefix;
}
//-----------------------------------------------------------------------------
QString ImageOptions::blockSuffix() const
{
    return this->mBlockSuffix;
}
//-----------------------------------------------------------------------------
QString ImageOptions::blockDelimiter() const
{
    return this->mBlockDelimiter;
}
//-----------------------------------------------------------------------------
void ImageOptions::setSplitToRows(bool value)
{
    this->mSplitToRows = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setBytesOrder(BytesOrder value)
{
    if (value < BytesOrderLittleEndian || value > BytesOrderBigEndian)
        value = BytesOrderLittleEndian;
    this->mBytesOrder = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setBlockSize(DataBlockSize value)
{
    if (value < Data8 || value > Data32)
        value = Data32;
    this->mBlockSize = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setBlockDefaultOnes(bool value)
{
    this->mBlockDefaultOnes = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setCompressionRle(bool value)
{
    this->mCompressionRle = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setCompressionRleMinLength(quint32 value)
{
    this->mCompressionRleMinLength = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setBlockPrefix(const QString &value)
{
    this->mBlockPrefix = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setBlockSuffix(const QString &value)
{
    this->mBlockSuffix = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
void ImageOptions::setBlockDelimiter(const QString &value)
{
    this->mBlockDelimiter = value;

    emit this->changed();
}
//-----------------------------------------------------------------------------
bool ImageOptions::load(QSettings *settings, int version)
{
    bool result = false;

    if (version == 1)
    {
        quint32 uBytesOrder = 0, uBlockSize = 0, uBlockDefaultOnes = 0, uSplitToRows = 0;
        quint32 uCompressionRle = 0, uCompressionRleMinLength = 2;
        QString sBlockPrefix, sBlockSuffix, sBlockDelimiter;

        uBlockSize = settings->value(ImageOptions::FieldBlockSize, int(0)).toUInt(&result);

        if (result)
            uBytesOrder = settings->value(ImageOptions::FieldBytesOrder, int(0)).toUInt(&result);

        if (result)
            uSplitToRows = settings->value(ImageOptions::FieldSplitToRows, int(1)).toUInt(&result);

        if (result)
            uCompressionRle = settings->value(ImageOptions::FieldCompressionRle, int(0)).toUInt(&result);

        if (result)
            uCompressionRleMinLength = settings->value(ImageOptions::FieldCompressionRleMinLength, int(2)).toUInt(&result);

        if (result)
            uBlockDefaultOnes = settings->value(ImageOptions::FieldBlockDefaultOnes, int(0)).toUInt(&result);

        sBlockPrefix = settings->value(ImageOptions::FieldBlockPrefix, "0x").toString();
        sBlockSuffix = settings->value(ImageOptions::FieldBlockSuffix, "").toString();
        sBlockDelimiter = settings->value(ImageOptions::FieldBlockDelimiter, ", ").toString();

        if (result)
        {
            this->setBlockSize((DataBlockSize)uBlockSize);
            this->setBlockDefaultOnes((bool)uBlockDefaultOnes);
            this->setBytesOrder((BytesOrder)uBytesOrder);
            this->setSplitToRows((bool)uSplitToRows);
            this->setCompressionRle((bool)uCompressionRle);
            this->setCompressionRleMinLength(uCompressionRleMinLength);
            this->setBlockPrefix(sBlockPrefix);
            this->setBlockSuffix(sBlockSuffix);
            this->setBlockDelimiter(sBlockDelimiter);
        }
    }
    else if (version == 2)
    {
        settings->beginGroup(ImageOptions::GroupName);

        result = this->load(settings, 1);

        settings->endGroup();
    }

    return result;
}
//-----------------------------------------------------------------------------
bool ImageOptions::loadXmlElement(QDomElement element)
{
    bool result = false;

    QDomNode nodeSett = element.firstChild();

    while (!nodeSett.isNull()) {
        QDomElement e = nodeSett.toElement();

        if (e.tagName() == ImageOptions::GroupName) {
            break;
        }

        nodeSett = nodeSett.nextSibling();
    }

    if (nodeSett.isNull()) {
        return result;
    }

    quint32 uBytesOrder = 0, uBlockSize = 0, uBlockDefaultOnes = 0, uSplitToRows = 0;
    quint32 uCompressionRle = 0, uCompressionRleMinLength = 2;
    QString sBlockPrefix = "0x", sBlockSuffix, sBlockDelimiter = ", ";

    QDomNode nodeValue = nodeSett.firstChild();

    while (!nodeValue.isNull()) {
        QDomElement e = nodeValue.toElement();

        if (!e.isNull()) {
            if (e.tagName() == ImageOptions::FieldBlockSize) {
                QString str = e.text();
                uBlockSize = str.toUInt(&result);
            }

            if (e.tagName() == ImageOptions::FieldBytesOrder) {
                QString str = e.text();
                uBytesOrder = str.toUInt(&result);
            }

            if (e.tagName() == ImageOptions::FieldSplitToRows) {
                QString str = e.text();
                uSplitToRows = str.toUInt(&result);
            }

            if (e.tagName() == ImageOptions::FieldCompressionRle) {
                QString str = e.text();
                uCompressionRle = str.toUInt(&result);
            }

            if (e.tagName() == ImageOptions::FieldCompressionRleMinLength) {
                QString str = e.text();
                uCompressionRleMinLength = str.toUInt(&result);
            }

            if (e.tagName() == ImageOptions::FieldBlockDefaultOnes) {
                QString str = e.text();
                uBlockDefaultOnes = str.toUInt(&result);
            }

            if (e.tagName() == ImageOptions::FieldBlockPrefix) {
                sBlockPrefix = e.text();
            }

            if (e.tagName() == ImageOptions::FieldBlockSuffix) {
                sBlockSuffix = e.text();
            }

            if (e.tagName() == ImageOptions::FieldBlockDelimiter) {
                sBlockDelimiter = e.text();
            }

            if (!result) {
                break;
            }
        }

        nodeValue = nodeValue.nextSibling();
    }

    if (result)
    {
        this->setBlockSize((DataBlockSize)uBlockSize);
        this->setBlockDefaultOnes((bool)uBlockDefaultOnes);
        this->setBytesOrder((BytesOrder)uBytesOrder);
        this->setSplitToRows((bool)uSplitToRows);
        this->setCompressionRle((bool)uCompressionRle);
        this->setCompressionRleMinLength(uCompressionRleMinLength);
        this->setBlockPrefix(sBlockPrefix);
        this->setBlockSuffix(sBlockSuffix);
        this->setBlockDelimiter(sBlockDelimiter);
    }

    return result;
}
//-----------------------------------------------------------------------------
void ImageOptions::save(QSettings *settings)
{
    settings->beginGroup(ImageOptions::GroupName);

    settings->setValue(ImageOptions::FieldBytesOrder,       QString("%1").arg((int)this->bytesOrder()));
    settings->setValue(ImageOptions::FieldBlockSize,        QString("%1").arg((int)this->blockSize()));
    settings->setValue(ImageOptions::FieldBlockDefaultOnes, QString("%1").arg((int)this->blockDefaultOnes()));
    settings->setValue(ImageOptions::FieldSplitToRows,      QString("%1").arg((int)this->splitToRows()));
    settings->setValue(ImageOptions::FieldCompressionRle,   QString("%1").arg((int)this->compressionRle()));
    settings->setValue(ImageOptions::FieldCompressionRleMinLength,   QString("%1").arg((int)this->compressionRleMinLength()));
    settings->setValue(ImageOptions::FieldBlockPrefix,      this->blockPrefix());
    settings->setValue(ImageOptions::FieldBlockSuffix,      this->blockSuffix());
    settings->setValue(ImageOptions::FieldBlockDelimiter,   this->blockDelimiter());

    settings->endGroup();
}
//-----------------------------------------------------------------------------
void ImageOptions::saveXmlElement(QDomElement element)
{
    QDomElement nodeImage = element.ownerDocument().createElement(ImageOptions::GroupName);
    element.appendChild(nodeImage);

    QDomElement nodeBytesOrder = element.ownerDocument().createElement(ImageOptions::FieldBytesOrder);
    nodeImage.appendChild(nodeBytesOrder);
    nodeBytesOrder.appendChild(element.ownerDocument().createTextNode(QString("%1").arg((int)this->bytesOrder())));

    QDomElement nodeBlockSize = element.ownerDocument().createElement(ImageOptions::FieldBlockSize);
    nodeImage.appendChild(nodeBlockSize);
    nodeBlockSize.appendChild(element.ownerDocument().createTextNode(QString("%1").arg((int)this->blockSize())));

    QDomElement nodeBlockDefaultOnes = element.ownerDocument().createElement(ImageOptions::FieldBlockDefaultOnes);
    nodeImage.appendChild(nodeBlockDefaultOnes);
    nodeBlockDefaultOnes.appendChild(element.ownerDocument().createTextNode(QString("%1").arg((int)this->blockDefaultOnes())));

    QDomElement nodeSplitToRows = element.ownerDocument().createElement(ImageOptions::FieldSplitToRows);
    nodeImage.appendChild(nodeSplitToRows);
    nodeSplitToRows.appendChild(element.ownerDocument().createTextNode(QString("%1").arg((int)this->splitToRows())));

    QDomElement nodeCompressionRle = element.ownerDocument().createElement(ImageOptions::FieldCompressionRle);
    nodeImage.appendChild(nodeCompressionRle);
    nodeCompressionRle.appendChild(element.ownerDocument().createTextNode(QString("%1").arg((int)this->compressionRle())));

    QDomElement nodeCompressionRleMinLength = element.ownerDocument().createElement(ImageOptions::FieldCompressionRleMinLength);
    nodeImage.appendChild(nodeCompressionRleMinLength);
    nodeCompressionRleMinLength.appendChild(element.ownerDocument().createTextNode(QString("%1").arg((int)this->compressionRleMinLength())));

    QDomElement nodeBlockPrefix = element.ownerDocument().createElement(ImageOptions::FieldBlockPrefix);
    nodeImage.appendChild(nodeBlockPrefix);
    nodeBlockPrefix.appendChild(element.ownerDocument().createTextNode(this->blockPrefix()));

    QDomElement nodeBlockSuffix = element.ownerDocument().createElement(ImageOptions::FieldBlockSuffix);
    nodeImage.appendChild(nodeBlockSuffix);
    nodeBlockSuffix.appendChild(element.ownerDocument().createTextNode(this->blockSuffix()));

    QDomElement nodeBlockDelimiter = element.ownerDocument().createElement(ImageOptions::FieldBlockDelimiter);
    nodeImage.appendChild(nodeBlockDelimiter);
    nodeBlockDelimiter.appendChild(element.ownerDocument().createTextNode(this->blockDelimiter()));
}
//-----------------------------------------------------------------------------