/** *************************************************************************
                          constellationnamesitem.cpp  -  K Desktop Planetarium
                             -------------------
    begin                : 10/06/2016
    copyright            : (C) 2016 by Artem Fedoskin
    email                : afedoskin3@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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#include "constellationnamesitem.h"
#include "constellationnamescomponent.h"
#include "skymaplite.h"
#include "projections/projector.h"

#include "rootnode.h"
#include "labelsitem.h"
#include "skynodes/labelnode.h"

#include "Options.h"

ConstellationName::ConstellationName(SkyObject *skyObj)
    :obj(skyObj), latin(0), secondary(0)
{

}

void ConstellationName::hide() {
    if(latin) latin->hide();
    if(secondary) secondary->hide();
}

ConstellationNamesItem::ConstellationNamesItem(ConstellationNamesComponent *constComp, RootNode* parent)
    :SkyItem(LabelsItem::label_t::CONSTEL_NAME_LABEL, parent), m_constelNamesComp(constComp)
{
    recreateList();
}

void ConstellationNamesItem::update() {
    if( !m_constelNamesComp->selected() )  {
        hide();
        rootNode()->labelsItem()->hideLabels(labelType());
        return;
    }

    show();

    const Projector *proj = SkyMapLite::Instance()->projector();

    foreach(ConstellationName *constName, m_names) {
        SkyObject *p = constName->obj;
        if( ! proj->checkVisibility( p ) ) {
            constName->hide();
            continue;
        }

        bool visible = false;
        QPointF o = proj->toScreen( p, false, &visible );
        if( !visible || !proj->onScreen( o ) ) {
            constName->hide();
            continue;
        }

        QString name;

        if( Options::useLatinConstellNames() || Options::useLocalConstellNames() ) {
            name = p->name();

            if(!constName->latin) {
                constName->latin = rootNode()->labelsItem()->addLabel(name,labelType());
            }

            o.setX( o.x() - 5.0 * name.length() );

            constName->latin->setLabelPos(o);
            if(constName->secondary) constName->secondary->hide();
        } else {
            name = p->name2();

            if(!constName->secondary) {
                constName->secondary = rootNode()->labelsItem()->addLabel(name,labelType());
            }

            o.setX( o.x() - 5.0 * name.length() );

            constName->secondary->setLabelPos(o);
            if(constName->latin) constName->latin->hide();
        }
    }
}

void ConstellationNamesItem::recreateList() {
    rootNode()->labelsItem()->deleteLabels(labelType());
    m_names.clear();

    foreach(SkyObject *skyObj, m_constelNamesComp->objectList()) {
        m_names.append(new ConstellationName(skyObj));
    }
}

