wiview.cpp 19.7 KB
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/***************************************************************************
                          wiview.cpp  -  K Desktop Planetarium
                             -------------------
    begin                : 2012/26/05
    copyright            : (C) 2012 by Samikshan Bairagya
    email                : samikshan@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.                                   *
 *                                                                         *
 ***************************************************************************/

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#include <QtQuick/QQuickView>
#include <QtQuick/QQuickItem>
#include <QStandardPaths>
#include <QGraphicsObject>
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#include "wiview.h"
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#include "skymap.h"
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#include "dialogs/detaildialog.h"
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#include <klocalizedcontext.h>
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#include "kspaths.h"
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#include "starobject.h"

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#ifdef HAVE_INDI
#include <basedevice.h>
#include "indi/indilistener.h"
#include "indi/indistd.h"
#include "indi/driverinfo.h"
#endif

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WIView::WIView(QWidget * parent, ObsConditions * obs) : QWidget(parent), m_Obs(obs), m_CurCategorySelected(-1)
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{
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    m_ModManager = new ModelManager(m_Obs);
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    m_BaseView = new QQuickView();
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    ///To use i18n() instead of qsTr() in qml/wiview.qml for translation
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    //KDeclarative kd;
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    // kd.setDeclarativeEngine(m_BaseView->engine());
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    //kd.initialize();
    //kd.setupBindings();
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    m_Ctxt = m_BaseView->rootContext();
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    ///Use instead of KDeclarative
    m_Ctxt->setContextObject(new KLocalizedContext(m_BaseView));

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    m_BaseView->setSource(QUrl::fromLocalFile(KSPaths::locate(QStandardPaths::AppDataLocation, "tools/whatsinteresting/qml/wiview.qml")));
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    m_BaseObj = m_BaseView->rootObject();
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    //soTypeTextObj = m_BaseObj->findChild<QObject *>("soTypeTextObj");
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    m_ViewsRowObj = m_BaseObj->findChild<QQuickItem *>(QString("viewsRowObj"));
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    connect(m_ViewsRowObj, SIGNAL(categorySelected(int)), this, SLOT(onCategorySelected(int)));
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    m_SoListObj = m_BaseObj->findChild<QQuickItem *>("soListObj");
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    connect(m_SoListObj, SIGNAL(soListItemClicked(int, QString, int)), this, SLOT(onSoListItemClicked(int, QString, int)));
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    m_DetailsViewObj = m_BaseObj->findChild<QQuickItem *>("detailsViewObj");
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    m_NextObj = m_BaseObj->findChild<QQuickItem *>("nextObj");
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    connect(m_NextObj, SIGNAL(nextObjClicked()), this, SLOT(onNextObjClicked()));
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    m_PrevObj = m_BaseObj->findChild<QQuickItem *>("prevObj");
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    connect(m_PrevObj, SIGNAL(prevObjClicked()), this, SLOT(onPrevObjClicked()));
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    m_SlewButtonObj = m_BaseObj->findChild<QQuickItem *>("slewButtonObj");
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    connect(m_SlewButtonObj, SIGNAL(slewButtonClicked()), this, SLOT(onSlewButtonClicked()));

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    m_SlewTelescopeButtonObj = m_BaseObj->findChild<QQuickItem *>("slewTelescopeButtonObj");
    connect(m_SlewTelescopeButtonObj, SIGNAL(slewTelescopeButtonClicked()), this, SLOT(onSlewTelescopeButtonClicked()));

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    m_DetailsButtonObj = m_BaseObj->findChild<QQuickItem *>("detailsButtonObj");
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    connect(m_DetailsButtonObj, SIGNAL(detailsButtonClicked()), this, SLOT(onDetailsButtonClicked()));

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    QObject * settingsIconObj = m_BaseObj->findChild<QQuickItem *>("settingsIconObj");
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    connect(settingsIconObj, SIGNAL(settingsIconClicked()), this, SLOT(onSettingsIconClicked()));

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    QObject * reloadIconObj = m_BaseObj->findChild<QQuickItem *>("reloadIconObj");
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    connect(reloadIconObj, SIGNAL(reloadIconClicked()), this, SLOT(onReloadIconClicked()));

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    m_BaseView->setResizeMode(QQuickView::SizeRootObjectToView);
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    m_BaseView->show();
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}

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WIView::~WIView()
{
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    delete m_ModManager;
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    delete m_CurSoItem;
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}
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void WIView::onCategorySelected(int type)
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{
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    m_CurCategorySelected = type;
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    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(type));
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}
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void WIView::onSoListItemClicked(int type, QString typeName, int index)
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{
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    Q_UNUSED(typeName)

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    SkyObjItem * soitem = m_ModManager->returnModel(type)->getSkyObjItem(index);
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//    soTypeTextObj->setProperty("text", typeName);
//    soTypeTextObj->setProperty("visible", true);
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//    soListObj->setProperty("visible", false);
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    loadDetailsView(soitem, index);
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}

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void WIView::onNextObjClicked()
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{
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    int modelSize = m_ModManager->returnModel(m_CurSoItem->getType())->rowCount();
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    SkyObjItem * nextItem = m_ModManager->returnModel(m_CurSoItem->getType())->getSkyObjItem((m_CurIndex+1)%modelSize);
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    loadDetailsView(nextItem, (m_CurIndex+1)%modelSize);
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}
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void WIView::onPrevObjClicked()
{
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    int modelSize = m_ModManager->returnModel(m_CurSoItem->getType())->rowCount();
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    SkyObjItem * prevItem = m_ModManager->returnModel(m_CurSoItem->getType())->getSkyObjItem((m_CurIndex-1+modelSize)%modelSize);
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    loadDetailsView(prevItem, (m_CurIndex-1+modelSize)%modelSize);
}
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void WIView::onSlewButtonClicked()
{
    ///Slew map to selected sky-object
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    SkyObject * so = m_CurSoItem->getSkyObject();
    KStars * kstars = KStars::Instance();
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    if (so != 0)
    {
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        kstars->map()->setFocusPoint(so);
        kstars->map()->setFocusObject(so);
        kstars->map()->setDestination(*kstars->map()->focusPoint());
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    }
}
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void WIView::onSlewTelescopeButtonClicked()
{

    if(KMessageBox::Continue==KMessageBox::warningContinueCancel(NULL, "Are you sure you want your telescope to slew to this object?",
            i18n("Continue Slew"),  KStandardGuiItem::cont(), KStandardGuiItem::cancel(), "continue_wi_slew_warning"))
    {

#ifdef HAVE_INDI

    if (INDIListener::Instance()->size() == 0)
    {
        KMessageBox::sorry(0, i18n("KStars did not find any active telescopes."));
        return;
    }

    foreach(ISD::GDInterface * gd, INDIListener::Instance()->getDevices())
    {
        INDI::BaseDevice * bd = gd->getBaseDevice();

        if (gd->getType() != KSTARS_TELESCOPE)
            continue;

        if (bd == NULL)
            continue;

        if (bd->isConnected() == false)
        {
            KMessageBox::error(0, i18n("Telescope %1 is offline. Please connect and retry again.", gd->getDeviceName()));
            return;
        }


        ISD::GDSetCommand SlewCMD(INDI_SWITCH, "ON_COORD_SET", "TRACK", ISS_ON, this);

        gd->setProperty(&SlewCMD);
        gd->runCommand(INDI_SEND_COORDS, m_CurSoItem->getSkyObject());

        ///Slew map to selected sky-object
        onSlewButtonClicked();

        return;

    }

    KMessageBox::sorry(0, i18n("KStars did not find any active telescopes."));

#endif
    }


}

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void WIView::onDetailsButtonClicked()
{
    ///Code taken from WUTDialog::slotDetails()
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    KStars * kstars = KStars::Instance();
    SkyObject * so = m_CurSoItem->getSkyObject();
    DetailDialog * detail = new DetailDialog(so, kstars->data()->lt(), kstars->data()->geo(), kstars);
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    detail->exec();
    delete detail;
}
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void WIView::onSettingsIconClicked()
{
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    KStars * kstars = KStars::Instance();
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    kstars->showWISettingsUI();
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}
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void WIView::onReloadIconClicked()
{
    updateModels(m_Obs);
}

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void WIView::updateModels(ObsConditions * obs)
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{
    m_Obs = obs;
    m_ModManager->updateModels(m_Obs);
    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(0));
    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(1));
    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(2));
    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(3));
    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(4));
    m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(5));
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    if (m_CurCategorySelected >=0 && m_CurCategorySelected <= 5)
        m_Ctxt->setContextProperty("soListModel", m_ModManager->returnModel(m_CurCategorySelected));
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}

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void WIView::loadDetailsView(SkyObjItem * soitem, int index)
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{
    m_CurSoItem = soitem;
    m_CurIndex = index;

    int modelSize = m_ModManager->returnModel(m_CurSoItem->getType())->rowCount();
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    SkyObjItem * nextItem = m_ModManager->returnModel(m_CurSoItem->getType())->getSkyObjItem((m_CurIndex+1)%modelSize);
    SkyObjItem * prevItem = m_ModManager->returnModel(m_CurSoItem->getType())->getSkyObjItem((m_CurIndex-1+modelSize)%modelSize);
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    if(modelSize <= 1)
    {
        m_NextObj->setProperty("visible", "false");
        m_PrevObj->setProperty("visible", "false");
    }
    else
    {
        m_NextObj->setProperty("visible", "true");
        m_PrevObj->setProperty("visible", "true");
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        QObject * nextTextObj = m_NextObj->findChild<QObject *>("nextTextObj");
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        nextTextObj->setProperty("text", nextItem->getName());
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        QObject * prevTextObj = m_PrevObj->findChild<QObject *>("prevTextObj");
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        prevTextObj->setProperty("text", prevItem->getName());
    }
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    QObject * sonameObj = m_DetailsViewObj->findChild<QObject *>("sonameObj");
    QObject * posTextObj = m_DetailsViewObj->findChild<QObject *>("posTextObj");
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    QObject * detailImage = m_DetailsViewObj->findChild<QObject *>("detailImage");
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    QObject * descTextObj = m_DetailsViewObj->findChild<QObject *>("descTextObj");
    QObject * descSrcTextObj = m_DetailsViewObj->findChild<QObject *>("descSrcTextObj");
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    QObject * infoBoxTextObj = m_DetailsViewObj->findChild<QObject *>("infoBoxText");
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    QObject * detailsTextObj = m_DetailsViewObj->findChild<QObject *>("detailsTextObj");
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    sonameObj->setProperty("text", soitem->getLongName());
    posTextObj->setProperty("text", soitem->getPosition());
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    detailImage->setProperty("refreshableSource", soitem->getImageURL(false));
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    descTextObj->setProperty("text", soitem->getDesc());
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    if(soitem->getType() != SkyObjItem::Planet)
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        loadObjectDescription(descTextObj, descSrcTextObj, soitem);

    infoBoxTextObj->setProperty("text", "trying to Load infoText box from Wikipedia. . .");
    loadObjectInfoBox(infoBoxTextObj, soitem);
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    descSrcTextObj->setProperty("text", soitem->getDescSource());

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    QString summary=soitem->getSummary(false);
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    QString magText;
    if (soitem->getType() == SkyObjItem::Constellation)
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        magText = xi18n("Magnitude:  --");
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    else
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        magText = xi18n("Magnitude: %1", QLocale().toString(soitem->getMagnitude(),'f', 2));
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    QString sbText = xi18n("Surface Brightness: %1", soitem->getSurfaceBrightness());
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    QString sizeText = xi18n("Size: %1", soitem->getSize());
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    QString details = summary + "<BR>" + sbText + "<BR>" + magText + "<BR>" + sizeText;
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    detailsTextObj->setProperty("text", details);

}


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void WIView::tryToLoadDescFromWikipedia(QObject * descTextObj, QObject * descSrcTextObj, SkyObjItem * soitem)
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{
    QString name;
    if(soitem->getName().startsWith("M "))
        name = soitem->getName().replace("M ","messier_").toLower().remove( ' ' );
    else if(soitem->getType() == SkyObjItem::Constellation)
        name = soitem->getName().toLower().remove( ' ' ) + "_constellation";
    else if(soitem->getType() == SkyObjItem::Star){
        StarObject *star=dynamic_cast<StarObject*>(soitem->getSkyObject());
        if(star)
            name = star->gname().toLower().remove( ' ' ); //the greek name seems to give the most consistent search results.
        else
            name = soitem->getName().toLower().remove( ' ' );
    }else
        name = soitem->getName().toLower().remove( ' ' );

    QUrl url("https://en.wikipedia.org/w/api.php?action=opensearch&search=" + name + "&format=xml");

    QNetworkAccessManager * manager = new QNetworkAccessManager();
    QNetworkReply * response = manager->get(QNetworkRequest(url));
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    connect(manager, &QNetworkAccessManager::finished, this, [soitem, this, descTextObj, descSrcTextObj, manager, response]{
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      response->deleteLater();
      manager->deleteLater();
      if (response->error() != QNetworkReply::NoError) return;
      QString contentType =
        response->header(QNetworkRequest::ContentTypeHeader).toString();
      if (!contentType.contains("charset=utf-8")) {
        qWarning() << "Content charsets other than utf-8 are not implemented yet.";
        return;
      }
    QString result = QString::fromUtf8(response->readAll());
    int leftPos=result.indexOf("<Description")+34;
    if(leftPos<34)
        return;
    int rightPos=result.indexOf("</Description>")-leftPos;

    int leftURL=result.indexOf("<Url xml:space=\"preserve\">")+26;
    int rightURL=result.indexOf("</Url>")-leftURL;

    QString html="<HTML>" + result.mid(leftPos,rightPos) + "</HTML>";
    QString srchtml="<HTML>Source: Wikipedia (<a href='" + result.mid(leftURL,rightURL) + "'>" + result.mid(leftURL,rightURL) + "</a>)</HTML>";

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      saveObjectText( soitem, "description", html);
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      descTextObj->setProperty("text", html);
      descSrcTextObj->setProperty("text", srchtml);
    });
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}

void WIView::loadObjectDescription(QObject * descTextObj, QObject * descSrcTextObj, SkyObjItem * soitem){
    QFile file;
    QString fname = "description-" + soitem->getName().toLower().remove( ' ' ) + ".html";
    file.setFileName( KSPaths::writableLocation(QStandardPaths::GenericDataLocation) + "descriptions/" + fname ) ; //determine filename in local user KDE directory tree.

    if(file.exists()){

    if(file.open(QIODevice::ReadOnly)){
        QTextStream in(&file);
        QString line;
        while ( !in.atEnd() )
        {
            line = in.readLine();
            descTextObj->setProperty("text", line);
        }
        file.close();
    }
    }
    else{
        tryToLoadDescFromWikipedia(descTextObj, descSrcTextObj, soitem);
    }
}

void WIView::loadObjectInfoBox(QObject * infoBoxText, SkyObjItem * soitem)
{
    QFile file;
    QString fname = "infoText-" + soitem->getName().toLower().remove( ' ' ) + ".html";
    file.setFileName( KSPaths::writableLocation(QStandardPaths::GenericDataLocation) + "descriptions/" + fname ) ; //determine filename in local user KDE directory tree.

    if(file.exists())
    {
        if(file.open(QIODevice::ReadOnly))
        {
            QTextStream in(&file);
            QString line;
            while ( !in.atEnd() )
            {
                line = in.readAll();
                infoBoxText->setProperty("text", line);
                QTimer::singleShot(500, infoBoxText, SLOT(doLayout()));
            }
            file.close();
        }
    }
    else
    {
        tryToLoadInfoBoxFromWikipedia(infoBoxText, soitem);
    }
}

void WIView::tryToLoadInfoBoxFromWikipedia(QObject * infoBoxText, SkyObjItem * soitem)
{
    QString name;
    if(soitem->getName().toLower().startsWith("m "))
        name = soitem->getName().replace("M ","Messier_").remove( ' ' );
    else if(soitem->getName().toLower().startsWith("ngc"))
        name = soitem->getName().toLower().replace("ngc","NGC_").remove( ' ' );
    else if(soitem->getName().toLower().startsWith("ic"))
        name = soitem->getName().toLower().replace("ic","IC_").remove( ' ' );
    else if(soitem->getType() == SkyObjItem::Constellation)
        name = soitem->getName().toLower().replace( " ", "+" ) + "_constellation";
    else if(soitem->getType() == SkyObjItem::Star){
        StarObject *star=dynamic_cast<StarObject*>(soitem->getSkyObject());
        if(star)
            name = star->gname().toLower().remove( ' ' ); //the greek name seems to give the most consistent search results.
        else
            name = soitem->getName().toLower().remove( ' ' );
    }else
        name = soitem->getName().toLower().remove( ' ' );

    QUrl url("https://en.wikipedia.org/w/index.php?action=render&title="+ name + "&redirects");

    QNetworkAccessManager * manager = new QNetworkAccessManager();
    QNetworkReply * response = manager->get(QNetworkRequest(url));
    connect(manager, &QNetworkAccessManager::finished, this, [infoBoxText, url, manager, response, soitem, this]{
      if (response->error() != QNetworkReply::NoError) return;
    QString result = QString::fromUtf8(response->readAll());
    int leftPos=result.indexOf("<table class=\"infobox\"");
    int rightPos=result.indexOf("</table>")-leftPos;

    QString infoText=result.mid(leftPos,rightPos).replace("href=\"//","href=\"http://").replace("src=\"//","src=\"http://").replace("background:","color:black;background:").replace("background-color:","color:black;background:");
    infoText.replace("style=\"width:22em\"","style=\"width:100%;border: 1px solid #a2a9b1;border-spacing: 3px;background-color: black;color: white;margin: 0.5em 0 0.5em 1em;padding: 0.2em;line-height: 1.5em;\"");
    infoText=infoText + "<BR>(Source: <a href=" + url.url() + ">Wikipedia</a>)";
    int leftImg=infoText.indexOf("src=\"")+5;
    int rightImg=infoText.indexOf("\"",leftImg)-leftImg;
    QString imgURL=infoText.mid(leftImg,rightImg);
    saveImageURL( soitem, imgURL);
    downloadWikipediaImage(soitem, imgURL);

    QString html="<HTML><style type=text/css>a {text-decoration: none;color: yellow}</style><body><CENTER>" +  infoText + "</CENTER></body></HTML>";
    infoBoxText->setProperty("text", html);
    saveObjectText( soitem, "infoText", html);

      QTimer::singleShot(500, infoBoxText, SLOT(doLayout())); //This should make the image load after the html loads

      response->deleteLater();
      manager->deleteLater();
    });
}

void WIView::saveObjectText(SkyObjItem * soitem, QString type, QString text){

    QFile file;
    QString fname = type + "-" + soitem->getName().toLower().remove( ' ' ) + ".html";

    QDir writableDir;
    QString filePath=KSPaths::writableLocation(QStandardPaths::GenericDataLocation) + "descriptions";
    writableDir.mkpath(filePath);

    file.setFileName( filePath + "/" + fname ) ; //determine filename in local user KDE directory tree.

    if(file.exists())
        return;

    if (file.open(QIODevice::WriteOnly) == false)
    {
        qDebug()<<"Image text cannot be saved for later.  file save error";
        return;
    }
    else
    {
        QTextStream stream( &file );
        stream << text;
        file.close();
    }
}



void WIView::saveImageURL(SkyObjItem * soitem, QString imageURL){

    QFile file;
    file.setFileName( KSPaths::writableLocation(QStandardPaths::GenericDataLocation) + "image_url.dat" ) ; //determine filename in local user KDE directory tree.
    QString entry = soitem->getName() + ':' + "Show Wikipedia Image" + ':' + imageURL;

    if(file.open(QIODevice::ReadOnly)){
        QTextStream in(&file);
        QString line;
        while ( !in.atEnd() )
        {
            line = in.readLine();
            if (line==entry){
                file.close();
                return;
            }
        }
        file.close();
    }

    if ( !file.open( QIODevice::ReadWrite | QIODevice::Append ) )
    {
        qDebug()<<"Image URL cannot be saved for later.  image_url.dat error";
        return;
    }
    else
    {
        QTextStream stream( &file );
        stream << entry << endl;
        file.close();
    }
}


void WIView::downloadWikipediaImage(SkyObjItem * soitem, QString imageURL)
{
    QString fname = "wikiImage-" + soitem->getName().toLower().remove( ' ' ) + ".png";

    QDir writableDir;
    QString filePath=KSPaths::writableLocation(QStandardPaths::GenericDataLocation) + "descriptions";
    writableDir.mkpath(filePath);

    QString fileN =filePath + "/" + fname;

    qDebug()<<fileN;
    qDebug()<<imageURL;

    QUrl url(imageURL);

    QNetworkAccessManager * manager = new QNetworkAccessManager();
    QNetworkReply * response = manager->get(QNetworkRequest(url));
    connect(manager, &QNetworkAccessManager::finished, this, [fileN, manager, response, this]{
      response->deleteLater();
      manager->deleteLater();
      if (response->error() != QNetworkReply::NoError) return;

        QImage* image = new QImage();
        QByteArray responseData=response->readAll();
        image->loadFromData(responseData);
        image->save(fileN);


    });


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}
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