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/* KDE Display color scheme setup module
 * Copyright (C) 2007 Matthew Woehlke <mw_triad@users.sourceforge.net>
 * Copyright (C) 2007 Jeremy Whiting <jpwhiting@kde.org>
 *
 * 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 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "scmeditoreffects.h"

#include <QDebug>
#include <KConfigGroup>

SchemeEditorEffects::SchemeEditorEffects(KSharedConfigPtr config, QPalette::ColorGroup palette, QWidget *parent)
    : QWidget( parent )
    , m_palette(palette)
    , m_config(config)
{
    setupUi(this);
}

void SchemeEditorEffects::on_intensityBox_currentIndexChanged(int index)
{
    Q_UNUSED( index );
    updateFromEffectsPage();
}

void SchemeEditorEffects::on_intensitySlider_valueChanged(int value)
{
    Q_UNUSED( value );
    updateFromEffectsPage();
}

void SchemeEditorEffects::on_colorBox_currentIndexChanged(int index)
{
    Q_UNUSED( index );
    updateFromEffectsPage();
}

void SchemeEditorEffects::on_colorSlider_valueChanged(int value)
{
    Q_UNUSED( value );
    updateFromEffectsPage();
}

void SchemeEditorEffects::on_colorButton_changed(const QColor& color)
{
    Q_UNUSED( color );
    updateFromEffectsPage();
}

void SchemeEditorEffects::on_contrastBox_currentIndexChanged(int index)
{
    Q_UNUSED( index );
    updateFromEffectsPage();
}

void SchemeEditorEffects::on_contrastSlider_valueChanged(int value)
{
    Q_UNUSED( value );
    updateFromEffectsPage();
}

void SchemeEditorEffects::updateValues()
{
    m_disableUpdates = true;

    // NOTE: keep this in sync with kdelibs/kdeui/colors/kcolorscheme.cpp
    if (m_palette == QPalette::Inactive)
    {
        KConfigGroup group(m_config, "ColorEffects:Inactive");
        intensityBox->setCurrentIndex(abs(group.readEntry("IntensityEffect", 0)));
        intensitySlider->setValue(int(group.readEntry("IntensityAmount", 0.0) * 20.0) + 20);
        colorBox->setCurrentIndex(abs(group.readEntry("ColorEffect", 2)));
        if (colorBox->currentIndex() > 1)
        {
            colorSlider->setValue(int(group.readEntry("ColorAmount", 0.025) * 40.0));
        }
        else
        {
            colorSlider->setValue(int(group.readEntry("ColorAmount", 0.05) * 20.0) + 20);
        }
        colorButton->setColor(group.readEntry("Color", QColor(112, 111, 110)));
        contrastBox->setCurrentIndex(abs(group.readEntry("ContrastEffect", 2)));
        contrastSlider->setValue(int(group.readEntry("ContrastAmount", 0.1) * 20.0));

    }
    else if (m_palette == QPalette::Disabled)
    {
        KConfigGroup group(m_config, "ColorEffects:Disabled");
        intensityBox->setCurrentIndex(group.readEntry("IntensityEffect", 2));
        intensitySlider->setValue(int(group.readEntry("IntensityAmount", 0.1) * 20.0) + 20);
        colorBox->setCurrentIndex(group.readEntry("ColorEffect", 0));
        if (colorBox->currentIndex() > 1)
        {
            colorSlider->setValue(int(group.readEntry("ColorAmount", 0.0) * 40.0));
        }
        else
        {
            colorSlider->setValue(int(group.readEntry("ColorAmount", 0.0) * 20.0) + 20);
        }
        colorButton->setColor(group.readEntry("Color", QColor(56, 56, 56)));
        contrastBox->setCurrentIndex(group.readEntry("ContrastEffect", 1));
        contrastSlider->setValue(int(group.readEntry("ContrastAmount", 0.65) * 20.0));
    }
    else
    {
        return;
    }

    m_disableUpdates = false;

    // enable/disable controls
    intensitySlider->setDisabled(intensityBox->currentIndex() == 0);
    colorSlider->setDisabled(colorBox->currentIndex() == 0);
    colorButton->setDisabled(colorBox->currentIndex() < 2);
    contrastSlider->setDisabled(contrastBox->currentIndex() == 0);
    preview->setPalette(m_config, m_palette);
}

void SchemeEditorEffects::updateFromEffectsPage()
{
    if (m_disableUpdates)
    {
        // don't write the config as we are reading it!
        return;
    }

    QString groupName = "";
    if (m_palette == QPalette::Inactive)
    {
        groupName = "ColorEffects:Inactive";
    }
    else if (m_palette == QPalette::Disabled)
    {
        groupName = "ColorEffects:Disabled";
    }
    else
    {
        return;
    }
    KConfigGroup group(m_config, groupName);

    // intensity
    group.writeEntry("IntensityEffect", intensityBox->currentIndex());
    group.writeEntry("IntensityAmount", qreal(intensitySlider->value() - 20) * 0.05);

    // color
    group.writeEntry("ColorEffect", colorBox->currentIndex());
    if (colorBox->currentIndex() > 1)
    {
        group.writeEntry("ColorAmount", qreal(colorSlider->value()) * 0.025);
    }
    else
    {
        group.writeEntry("ColorAmount", qreal(colorSlider->value() - 20) * 0.05);
    }

    group.writeEntry("Color", colorButton->color());

    // contrast
    group.writeEntry("ContrastEffect", contrastBox->currentIndex());
    group.writeEntry("ContrastAmount", qreal(contrastSlider->value()) * 0.05);

    // enable/disable controls
    intensitySlider->setDisabled(intensityBox->currentIndex() == 0);
    colorSlider->setDisabled(colorBox->currentIndex() == 0);
    colorButton->setDisabled(colorBox->currentIndex() < 2);
    contrastSlider->setDisabled(contrastBox->currentIndex() == 0);

    preview->setPalette(m_config, m_palette);

    emit changed(true);
}