/*
 * Copyright (c) 2007      Gustavo Pichorim Boiko <gustavo.boiko@kdemail.net>
 * Copyright (c) 2002,2003 Hamish Rodda <rodda@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; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include "krandrmodule.h"
#include "randrdisplay.h"
#include "randrconfig.h"

#include <QTextStream>
#include <KPluginFactory>
#include <KPluginLoader>
#include <KDebug>
#include <KApplication>
#include <KProcess>
#include <kdemacros.h>
#include <config-X11.h>

#include "randr.h"

// DLL Interface for kcontrol
K_PLUGIN_FACTORY(KSSFactory, registerPlugin<KRandRModule>();)
K_EXPORT_PLUGIN(KSSFactory("krandr"))

extern "C"
{
    KDE_EXPORT void kcminit_randr()
    {
        KConfig config("krandrrc");
        KConfigGroup group = config.group("Display");
        const bool applyonstartup = group.readEntry("ApplyOnStartup", false);
        if (applyonstartup) {
            const QStringList commands = group.readEntry("StartupCommands").split("\n");
            foreach (const QString &command, commands) {
                KProcess kproc;
                kproc.setShellCommand(command);
                kproc.start();
                if (!kproc.waitForStarted() || !kproc.waitForFinished()) {
                    kWarning() << kproc.readAllStandardError();
                }
            }
        }
    }
}

KRandRModule::KRandRModule(QWidget *parent, const QVariantList&)
    : KCModule(KSSFactory::componentData(), parent)
{
    m_display = new RandRDisplay();
    if (!m_display->isValid()) {
        QVBoxLayout *topLayout = new QVBoxLayout(this);
        QLabel *label = new QLabel(i18n("Your X server does not support resizing and "
                                        "rotating the display. Please update to version 4.3 "
                                        "or greater. You need the X Resize, Rotate, and Reflect "
                                        "extension (RANDR) version 1.1 or greater to use this "
                                        "feature."), this);
                                        
        label->setWordWrap(true);
        topLayout->addWidget(label);
        kWarning() << "Error: " << m_display->errorCode();
        return;
    }

    QVBoxLayout* topLayout = new QVBoxLayout(this);
    topLayout->setMargin(0);
    topLayout->setSpacing(KDialog::spacingHint());

    m_config = new RandRConfig(this, m_display);
    connect(m_config, SIGNAL(changed(bool)), SIGNAL(changed(bool)));
    topLayout->addWidget(m_config);

    // topLayout->addStretch(1);

    setButtons(KCModule::Apply);

    kapp->installX11EventFilter(this);
}

KRandRModule::~KRandRModule()
{
    delete m_display;
}

void KRandRModule::defaults()
{
    if (!m_display->isValid()) {
        return;
    }
    m_config->defaults();
}

void KRandRModule::load()
{
    kDebug() << "Loading KRandRModule...";

    if (!m_display->isValid()) {
        return;
    }
    m_config->load();

    emit changed(false);
}

void KRandRModule::save()
{
    if (!m_display->isValid()) {
        return;
    }
    m_config->save();
}

void KRandRModule::apply()
{
    if (!m_display->isValid()) {
        return;
    }
    m_config->apply();
}

bool KRandRModule::x11Event(XEvent* e)
{
    if (m_display->canHandle(e)) {
        m_display->handleEvent(e);
    }
    return QWidget::x11Event(e);
}

#include "moc_krandrmodule.cpp"