File indexing completed on 2024-09-15 09:13:16

 /*
     SPDX-FileCopyrightText: 2023 Hy Murveit <hy@murveit.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "imageoverlaycomponent.h"
 
 #include "kstars.h"
 #include "Options.h"
 #include "skypainter.h"
 #include "skymap.h"
 #ifdef HAVE_CFITSIO
 #include "fitsviewer/fitsdata.h"
 #endif
 #include "auxiliary/kspaths.h"
 #include "ekos/auxiliary/solverutils.h"
 #include "ekos/auxiliary/stellarsolverprofile.h"
 
 #include <QTableWidget>
 #include <QImageReader>
 #include <QCheckBox>
 #include <QComboBox>
 #include <QtConcurrent>
 #include <QRegularExpression>
 
 namespace
 {
 
 enum ColumnIndex
 {
     FILENAME_COL = 0,
     //ENABLED_COL,
     //NICKNAME_COL,
     STATUS_COL,
     RA_COL,
     DEC_COL,
     ARCSEC_PER_PIXEL_COL,
     ORIENTATION_COL,
     WIDTH_COL,
     HEIGHT_COL,
     EAST_TO_RIGHT_COL,
     NUM_COLUMNS
 };
 
 // These needs to be syncronized with enum Status and initializeGui::StatusNames().
 constexpr int UNPROCESSED_INDEX = 0;
 constexpr int OK_INDEX = 4;
 
 // Helper to create the image overlay table.
 // Start the table, displaying the heading and timing information, common to all sessions.
 void setupTable(QTableWidget *table)
 {
     table->clear();
     table->setRowCount(0);
     table->setColumnCount(NUM_COLUMNS);
     table->setShowGrid(false);
     table->setWordWrap(true);
 
     QStringList HeaderNames =
     {
         i18n("Filename"),
         //    "", "Nickname",
         i18n("Status"), i18n("RA"), i18n("DEC"), i18n("A-S/px"), i18n("Angle"),
         i18n("Width"), i18n("Height"), i18n("EastRight")
     };
     table->setHorizontalHeaderLabels(HeaderNames);
 }
 
 // This initializes an item in the table widget.
 void setupTableItem(QTableWidget *table, int row, int column, const QString &text, bool editable = true)
 {
     if (table->rowCount() < row + 1)
         table->setRowCount(row + 1);
     if (column >= NUM_COLUMNS)
         return;
     QTableWidgetItem *item = new QTableWidgetItem();
     item->setTextAlignment(Qt::AlignLeft | Qt::AlignVCenter);
     item->setText(text);
     if (!editable)
         item->setFlags(item->flags() ^ Qt::ItemIsEditable);
     table->setItem(row, column, item);
 }
 
 // Helper for sorting the overlays alphabetically (case-insensitive).
 bool overlaySorter(const ImageOverlay &o1, const ImageOverlay &o2)
 {
     return o1.m_Filename.toLower() < o2.m_Filename.toLower();
 }
 
 // The dms method for initializing from text requires knowing if the input is degrees or hours.
 // This is a crude way to detect HMS input, and may not internationalize well.
 bool isHMS(const QString &input)
 {
     QString trimmedInput = input.trimmed();
     // Just 14h
     QRegularExpression re1("^(\\d+)\\s*h$");
     // 14h 2m
     QRegularExpression re2("^(\\d+)\\s*h\\s(\\d+)\\s*(?:[m\']?)$");
     // 14h 2m 3.2s
     QRegularExpression re3("^(\\d+)\\s*h\\s(\\d+)\\s*[m\'\\s]\\s*(\\d+\\.*\\d*)\\s*([s\"]?)$");
 
     return re1.match(trimmedInput).hasMatch() ||
            re2.match(trimmedInput).hasMatch() ||
            re3.match(trimmedInput).hasMatch();
 }
 
 // Even if an image is already solved, the user may have changed the status in the UI.
 bool shouldSolveAnyway(QTableWidget *table, int row)
 {
     QComboBox *item = dynamic_cast<QComboBox*>(table->cellWidget(row, STATUS_COL));
     if (!item) return false;
     return (item->currentIndex() != OK_INDEX);
 }
 
 QString toDecString(const dms &dec)
 {
     // Sadly DMS::setFromString doesn't parse dms::toDMSString()
     // return dec.toDMSString();
     return QString("%1 %2' %3\"").arg(dec.degree()).arg(dec.arcmin()).arg(dec.arcsec());
 }
 
 QString toDecString(double dec)
 {
     return toDecString(dms(dec));
 }
 }  // namespace
 
 ImageOverlayComponent::ImageOverlayComponent(SkyComposite *parent) : SkyComponent(parent)
 {
     QDir dir = QDir(KSPaths::writableLocation(QStandardPaths::AppLocalDataLocation) + "/imageOverlays");
     dir.mkpath(".");
     m_Directory = dir.absolutePath();
     connect(&m_TryAgainTimer, &QTimer::timeout, this, &ImageOverlayComponent::tryAgain, Qt::UniqueConnection);
     connect(this, &ImageOverlayComponent::updateLog, this, &ImageOverlayComponent::updateStatusDisplay, Qt::UniqueConnection);
 
     // Get the latest from the User DB
     loadFromUserDB();
 
     // The rest of the initialization happens when we get the setWidgets() call.
 }
 
 // Validate the user inputs, and if invalid, replace with the previous values.
 void ImageOverlayComponent::cellChanged(int row, int col)
 {
     if (!m_Initialized || col < 0 || col >= NUM_COLUMNS || row < 0 || row >= m_ImageOverlayTable->rowCount()) return;
     // Note there are a couple columns with widgets instead of normal text items.
     // This method shouldn't get called for those, but...
     if (col == STATUS_COL || col == EAST_TO_RIGHT_COL) return;
 
     QTableWidgetItem *item = m_ImageOverlayTable->item(row, col);
     if (!item) return;
 
     disconnect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged);
     QString itemString = item->text();
     auto overlay = m_Overlays[row];
     if (col == RA_COL)
     {
         dms raDMS;
         const bool useHMS = isHMS(itemString);
         const bool raOK = raDMS.setFromString(itemString, !useHMS);
         if (!raOK)
         {
             item->setText(dms(overlay.m_RA).toHMSString());
             QString msg = i18n("Bad RA string entered for %1. Reset to original value.", overlay.m_Filename);
             emit updateLog(msg);
         }
         else
             // Re-format the user-entered value.
             item->setText(raDMS.toHMSString());
     }
     else if (col == DEC_COL)
     {
         dms decDMS;
         const bool decOK = decDMS.setFromString(itemString);
         if (!decOK)
         {
             item->setText(toDecString(overlay.m_DEC));
             QString msg = i18n("Bad DEC string entered for %1. Reset to original value.", overlay.m_Filename);
             emit updateLog(msg);
         }
         else
             item->setText(toDecString(decDMS));
     }
     else if (col == ORIENTATION_COL)
     {
         bool angleOK = false;
         double angle = itemString.toDouble(&angleOK);
         if (!angleOK || angle > 360 || angle < -360)
         {
             item->setText(QString("%1").arg(overlay.m_Orientation, 0, 'f', 2));
             QString msg = i18n("Bad orientation angle string entered for %1. Reset to original value.", overlay.m_Filename);
             emit updateLog(msg);
         }
     }
     else if (col == ARCSEC_PER_PIXEL_COL)
     {
         bool scaleOK = false;
         double scale = itemString.toDouble(&scaleOK);
         if (!scaleOK || scale < 0 || scale > 1000)
         {
             item->setText(QString("%1").arg(overlay.m_ArcsecPerPixel, 0, 'f', 2));
             QString msg = i18n("Bad scale angle string entered for %1. Reset to original value.", overlay.m_Filename);
             emit updateLog(msg);
         }
     }
     connect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged, Qt::UniqueConnection);
 }
 
 // Like cellChanged() but for the status column which contains QComboxBox widgets.
 void ImageOverlayComponent::statusCellChanged(int row)
 {
     if (row < 0 || row >= m_ImageOverlayTable->rowCount()) return;
 
     auto overlay = m_Overlays[row];
     disconnect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged);
 
     // If the user changed the status of a column to OK,
     // then we check to make sure the required columns are filled out.
     // If so, then we also save it to the DB.
     // If the required columns are not filled out, the QComboBox value is reverted to UNPROCESSED.
     QComboBox *statusItem = dynamic_cast<QComboBox*>(m_ImageOverlayTable->cellWidget(row, STATUS_COL));
     bool failed = false;
     if (statusItem->currentIndex() == OK_INDEX)
     {
         dms raDMS;
         QTableWidgetItem *raItem = m_ImageOverlayTable->item(row, RA_COL);
         if (!raItem) return;
         const bool useHMS = isHMS(raItem->text());
         const bool raOK = raDMS.setFromString(raItem->text(), !useHMS);
         if (!raOK || raDMS.Degrees() == 0)
         {
             QString msg = i18n("Cannot set status to OK. Legal non-0 RA value required.");
             emit updateLog(msg);
             failed = true;
         }
 
         dms decDMS;
         QTableWidgetItem *decItem = m_ImageOverlayTable->item(row, DEC_COL);
         if (!decItem) return;
         const bool decOK = decDMS.setFromString(decItem->text());
         if (!decOK)
         {
             QString msg = i18n("Cannot set status to OK. Legal non-0 DEC value required.");
             emit updateLog(msg);
             failed = true;
         }
 
         bool angleOK = false;
         QTableWidgetItem *angleItem = m_ImageOverlayTable->item(row, ORIENTATION_COL);
         if (!angleItem) return;
         const double angle = angleItem->text().toDouble(&angleOK);
         if (!angleOK || angle > 360 || angle < -360)
         {
             QString msg = i18n("Cannot set status to OK. Legal orientation value required.");
             emit updateLog(msg);
             failed = true;
         }
 
         bool scaleOK = false;
         QTableWidgetItem *scaleItem = m_ImageOverlayTable->item(row, ARCSEC_PER_PIXEL_COL);
         if (!scaleItem) return;
         const double scale = scaleItem->text().toDouble(&scaleOK);
         if (!scaleOK || scale < 0 || scale > 1000)
         {
             QString msg = i18n("Cannot set status to OK. Legal non-0 a-s/px value required.");
             emit updateLog(msg);
             failed = true;
         }
 
         if (failed)
         {
             QComboBox *statusItem = dynamic_cast<QComboBox*>(m_ImageOverlayTable->cellWidget(row, STATUS_COL));
             statusItem->setCurrentIndex(UNPROCESSED_INDEX);
         }
         else
         {
             m_Overlays[row].m_Status = ImageOverlay::AVAILABLE;
             m_Overlays[row].m_RA = raDMS.Degrees();
             m_Overlays[row].m_DEC = decDMS.Degrees();
             m_Overlays[row].m_ArcsecPerPixel = scale;
             m_Overlays[row].m_Orientation = angle;
             const QComboBox *ewItem = dynamic_cast<QComboBox*>(m_ImageOverlayTable->cellWidget(row, EAST_TO_RIGHT_COL));
             m_Overlays[row].m_EastToTheRight = ewItem->currentIndex();
 
             if (m_Overlays[row].m_Img.get() == nullptr)
             {
                 // Load the image.
                 const QString fullFilename = QString("%1/%2").arg(m_Directory).arg(m_Overlays[row].m_Filename);
                 QImage *img = loadImageFile(fullFilename, !m_Overlays[row].m_EastToTheRight);
                 m_Overlays[row].m_Width = img->width();
                 m_Overlays[row].m_Height = img->height();
                 m_Overlays[row].m_Img.reset(img);
             }
             saveToUserDB();
             QString msg = i18n("Stored OK status for %1.", m_Overlays[row].m_Filename);
             emit updateLog(msg);
         }
     }
     connect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged, Qt::UniqueConnection);
 }
 
 ImageOverlayComponent::~ImageOverlayComponent()
 {
     if (m_LoadImagesFuture.isRunning())
     {
         m_LoadImagesFuture.cancel();
         m_LoadImagesFuture.waitForFinished();
     }
 }
 
 void ImageOverlayComponent::selectionChanged()
 {
     if (m_Initialized && Options::showSelectedImageOverlay())
         show();
 }
 
 bool ImageOverlayComponent::selected()
 {
     return Options::showImageOverlays();
 }
 
 void ImageOverlayComponent::draw(SkyPainter *skyp)
 {
 #if !defined(KSTARS_LITE)
     if (m_Initialized)
         skyp->drawImageOverlay(&m_Overlays);
 #else
     Q_UNUSED(skyp);
 #endif
 }
 
 void ImageOverlayComponent::setWidgets(QTableWidget *table, QPlainTextEdit *statusDisplay,
                                        QPushButton *solveButton, QGroupBox *tableGroupBox,
                                        QComboBox *solverProfile)
 {
     m_ImageOverlayTable = table;
     // Temporarily make the table uneditable.
     m_EditTriggers = m_ImageOverlayTable->editTriggers();
     table->setEditTriggers(QAbstractItemView::NoEditTriggers);
 
     m_SolveButton = solveButton;
     m_TableGroupBox = tableGroupBox;
     m_SolverProfile = solverProfile;
     solveButton->setText(i18n("Solve"));
 
     m_StatusDisplay = statusDisplay;
     setupTable(table);
     updateTable();
     connect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged, Qt::UniqueConnection);
     connect(m_ImageOverlayTable, &QTableWidget::itemSelectionChanged, this, &ImageOverlayComponent::selectionChanged,
             Qt::UniqueConnection);
 
     initSolverProfiles();
     loadAllImageFiles();
 }
 
 void ImageOverlayComponent::initSolverProfiles()
 {
     QString savedOptionsProfiles = QDir(KSPaths::writableLocation(
                                             QStandardPaths::AppLocalDataLocation)).filePath("SavedAlignProfiles.ini");
 
     QList<SSolver::Parameters> optionsList;
     if(QFile(savedOptionsProfiles).exists())
         optionsList = StellarSolver::loadSavedOptionsProfiles(savedOptionsProfiles);
     else
         optionsList = Ekos::getDefaultAlignOptionsProfiles();
 
     m_SolverProfile->clear();
     for(auto &param : optionsList)
         m_SolverProfile->addItem(param.listName);
     m_SolverProfile->setCurrentIndex(Options::solveOptionsProfile());
 }
 
 void ImageOverlayComponent::updateStatusDisplay(const QString &message)
 {
     if (!m_StatusDisplay)
         return;
     m_LogText.insert(0, message);
     m_StatusDisplay->setPlainText(m_LogText.join("\n"));
 }
 
 // Find all the files in the directory, see if they are in the m_Overlays.
 // If no, append to the end of m_Overlays, and set status as unprocessed.
 void ImageOverlayComponent::updateTable()
 {
 #ifdef HAVE_CFITSIO
     // Get the list of files from the image overlay directory.
     QDir directory(m_Directory);
     emit updateLog(i18n("Updating from directory: %1", m_Directory));
     QStringList images = directory.entryList(QStringList() << "*", QDir::Files);
     QSet<QString> imageFiles;
     foreach(QString filename, images)
     {
         if (!FITSData::readableFilename(filename))
             continue;
         imageFiles.insert(filename);
     }
 
     // Sort the files alphabetically.
     QList<QString> sortedImageFiles;
     for (const auto &fn : imageFiles)
         sortedImageFiles.push_back(fn);
     std::sort(sortedImageFiles.begin(), sortedImageFiles.end(), overlaySorter);
 
     // Remove any overlays that aren't in the directory.
     QList<ImageOverlay> tempOverlays;
     QMap<QString, int> tempMap;
     int numDeleted = 0;
     for (int i = 0; i < m_Overlays.size(); ++i)
     {
         auto &fname = m_Overlays[i].m_Filename;
         if (sortedImageFiles.indexOf(fname) >= 0)
         {
             tempOverlays.append(m_Overlays[i]);
             tempMap[fname] = tempOverlays.size() - 1;
         }
         else
             numDeleted++;
     }
     m_Overlays = tempOverlays;
     m_Filenames = tempMap;
 
     // Add the new files into the overlay list.
     int numNew = 0;
     for (const auto &filename : sortedImageFiles)
     {
         auto item = m_Filenames.find(filename);
         if (item == m_Filenames.end())
         {
             // If it doesn't already exist in our database:
             ImageOverlay overlay(filename);
             const int size = m_Filenames.size();  // place before push_back().
             m_Overlays.push_back(overlay);
             m_Filenames[filename] = size;
             numNew++;
         }
     }
     emit updateLog(i18n("%1 overlays (%2 new, %3 deleted) %4 solved", m_Overlays.size(), numNew, numDeleted,
                         numAvailable()));
     m_TableGroupBox->setTitle(i18n("Image Overlays.  %1 images, %2 available.", m_Overlays.size(), numAvailable()));
 
     initializeGui();
     saveToUserDB();
 #endif
 }
 
 void ImageOverlayComponent::loadAllImageFiles()
 {
     m_LoadImagesFuture = QtConcurrent::run(this, &ImageOverlayComponent::loadImageFileLoop);
 }
 
 void ImageOverlayComponent::loadImageFileLoop()
 {
     emit updateLog(i18n("Loading image files..."));
     while (loadImageFile());
     int num = 0;
     for (const auto &o : m_Overlays)
         if (o.m_Img.get() != nullptr)
             num++;
     emit updateLog(i18n("%1 image files loaded.", num));
     // Restore editing for the table.
     m_ImageOverlayTable->setEditTriggers(m_EditTriggers);
     m_Initialized = true;
 }
 
 QImage *ImageOverlayComponent::loadImageFile (const QString &fullFilename, bool mirror)
 {
     QSharedPointer<QImage> tempImage(new QImage(fullFilename));
     if (tempImage.get() == nullptr) return nullptr;
     int scaleWidth = std::min(tempImage->width(), Options::imageOverlayMaxDimension());
     QImage *processedImg = new QImage;
     if (mirror)
         *processedImg = tempImage->mirrored(true, false).scaledToWidth(scaleWidth); // It's reflected horizontally.
     else
         *processedImg = tempImage->scaledToWidth(scaleWidth);
 
     return processedImg;
 }
 
 bool ImageOverlayComponent::loadImageFile()
 {
     bool updatedSomething = false;
 
     for (auto &o : m_Overlays)
     {
         if (o.m_Status == o.ImageOverlay::AVAILABLE && o.m_Img.get() == nullptr)
         {
             QString fullFilename = QString("%1%2%3").arg(m_Directory).arg(QDir::separator()).arg(o.m_Filename);
             QImage *img = loadImageFile(fullFilename, !o.m_EastToTheRight);
             o.m_Img.reset(img);
             updatedSomething = true;
 
             // Note: The original width and height in o.m_Width/m_Height is kept even
             // though the image was rescaled. This is to get the rendering right
             // with the original scale.
         }
     }
     return updatedSomething;
 }
 
 
 // Copies the info in m_Overlays into m_ImageOverlayTable UI.
 void ImageOverlayComponent::initializeGui()
 {
     if (!m_ImageOverlayTable) return;
 
     // Don't call callback on programmatic changes.
     disconnect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged);
 
     // This clears the table.
     setupTable(m_ImageOverlayTable);
 
     int row = 0;
     for (int i = 0; i < m_Overlays.size(); ++i)
     {
         const ImageOverlay &overlay = m_Overlays[row];
         // False: The user can't edit filename.
         setupTableItem(m_ImageOverlayTable, row, FILENAME_COL, overlay.m_Filename, false);
 
         QStringList StatusNames =
         {
             i18n("Unprocessed"), i18n("Bad File"), i18n("Solve Failed"), i18n("Error"), i18n("OK")
         };
         QComboBox *statusBox = new QComboBox();
         for (int i = 0; i < ImageOverlay::NUM_STATUS; ++i)
             statusBox->addItem(StatusNames[i]);
         connect(statusBox, QOverload<int>::of(&QComboBox::activated), this, [row, this](int newIndex)
         {
             Q_UNUSED(newIndex);
             statusCellChanged(row);
         });
         statusBox->setCurrentIndex(static_cast<int>(overlay.m_Status));
         m_ImageOverlayTable->setCellWidget(row, STATUS_COL, statusBox);
 
         setupTableItem(m_ImageOverlayTable, row, ORIENTATION_COL, QString("%1").arg(overlay.m_Orientation, 0, 'f', 2));
         setupTableItem(m_ImageOverlayTable, row, RA_COL, dms(overlay.m_RA).toHMSString());
         setupTableItem(m_ImageOverlayTable, row, DEC_COL, toDecString(overlay.m_DEC));
         setupTableItem(m_ImageOverlayTable, row, ARCSEC_PER_PIXEL_COL, QString("%1").arg(overlay.m_ArcsecPerPixel, 0, 'f', 2));
 
         // The user can't edit width & height--taken from image.
         setupTableItem(m_ImageOverlayTable, row, WIDTH_COL, QString("%1").arg(overlay.m_Width), false);
         setupTableItem(m_ImageOverlayTable, row, HEIGHT_COL, QString("%1").arg(overlay.m_Height), false);
 
         QComboBox *mirroredBox = new QComboBox();
         mirroredBox->addItem(i18n("West-Right"));
         mirroredBox->addItem(i18n("East-Right"));
         connect(mirroredBox, QOverload<int>::of(&QComboBox::activated), this, [row](int newIndex)
         {
             Q_UNUSED(row);
             Q_UNUSED(newIndex);
             // Don't need to do anything. Will get picked up on change of status to OK.
         });
         mirroredBox->setCurrentIndex(overlay.m_EastToTheRight ? 1 : 0);
         m_ImageOverlayTable->setCellWidget(row, EAST_TO_RIGHT_COL, mirroredBox);
 
         row++;
     }
     m_ImageOverlayTable->resizeColumnsToContents();
     m_TableGroupBox->setTitle(i18n("Image Overlays.  %1 images, %2 available.", m_Overlays.size(), numAvailable()));
     connect(m_ImageOverlayTable, &QTableWidget::cellChanged, this, &ImageOverlayComponent::cellChanged, Qt::UniqueConnection);
 
 }
 
 void ImageOverlayComponent::loadFromUserDB()
 {
     QList<ImageOverlay *> list;
     KStarsData::Instance()->userdb()->GetAllImageOverlays(&m_Overlays);
     // Alphabetize.
     std::sort(m_Overlays.begin(), m_Overlays.end(), overlaySorter);
     m_Filenames.clear();
     int index = 0;
     for (const auto &o : m_Overlays)
     {
         m_Filenames[o.m_Filename] = index;
         index++;
     }
 }
 
 void ImageOverlayComponent::saveToUserDB()
 {
     KStarsData::Instance()->userdb()->DeleteAllImageOverlays();
     for (const ImageOverlay &metadata : m_Overlays)
         KStarsData::Instance()->userdb()->AddImageOverlay(metadata);
 }
 
 void ImageOverlayComponent::solveImage(const QString &filename)
 {
     if (!m_Initialized) return;
     m_SolveButton->setText(i18n("Abort"));
     const int solverTimeout = Options::imageOverlayTimeout();
     auto profiles = Ekos::getDefaultAlignOptionsProfiles();
     auto parameters = profiles.at(m_SolverProfile->currentIndex());
     // Double search radius
     parameters.search_radius = parameters.search_radius * 2;
 
     m_Solver.reset(new SolverUtils(parameters, solverTimeout),  &QObject::deleteLater);
     connect(m_Solver.get(), &SolverUtils::done, this, &ImageOverlayComponent::solverDone, Qt::UniqueConnection);
 
     if (m_RowsToSolve.size() > 1)
         emit updateLog(i18n("Solving: %1. %2 in queue.", filename, m_RowsToSolve.size()));
     else
         emit updateLog(i18n("Solving: %1.", filename));
 
     // If the user added some RA/DEC/Scale values to the table, they will be used in the solve
     // (but aren't remembered in the DB unless the solve is successful).
     int row = m_RowsToSolve[0];
     QString raString = m_ImageOverlayTable->item(row, RA_COL)->text().toLatin1().data();
     QString decString = m_ImageOverlayTable->item(row, DEC_COL)->text().toLatin1().data();
     QString scaleString = m_ImageOverlayTable->item(row, ARCSEC_PER_PIXEL_COL)->text().toLatin1().data();
 
     dms raDMS, decDMS;
     const bool useHMS = isHMS(raString);
     const bool raOK = raDMS.setFromString(raString, !useHMS) && (raDMS.Degrees() != 0.00);
     const bool decOK = decDMS.setFromString(decString) && (decDMS.Degrees() != 0.00);
     bool scaleOK = false;
     double scale = scaleString.toDouble(&scaleOK);
     scaleOK = scaleOK && scale != 0.00;
 
     // Use the default scale if it is > 0 and scale was not specified in the UI table.
     if (!scaleOK && Options::imageOverlayDefaultScale() > 0.0001)
     {
         scale = Options::imageOverlayDefaultScale();
         scaleOK = true;
     }
 
     if (scaleOK)
     {
         auto lowScale = scale * 0.75;
         auto highScale = scale * 1.25;
         m_Solver->useScale(true, lowScale, highScale);
     }
     if (raOK && decOK)
         m_Solver->usePosition(true, raDMS.Degrees(), decDMS.Degrees());
 
     m_Solver->runSolver(filename);
 }
 
 void ImageOverlayComponent::tryAgain()
 {
     m_TryAgainTimer.stop();
     if (!m_Initialized) return;
     if (m_RowsToSolve.size() > 0)
         startSolving();
 }
 
 int ImageOverlayComponent::numAvailable()
 {
     int num = 0;
     for (const auto &o : m_Overlays)
         if (o.m_Status == ImageOverlay::AVAILABLE)
             num++;
     return num;
 }
 
 void ImageOverlayComponent::show()
 {
     if (!m_Initialized || !m_ImageOverlayTable) return;
     auto selections = m_ImageOverlayTable->selectionModel();
     if (selections->hasSelection())
     {
         auto selectedIndexes = selections->selectedIndexes();
         const int row = selectedIndexes.at(0).row();
         if (m_Overlays.size() > row && row >= 0)
         {
             if (m_Overlays[row].m_Status != ImageOverlay::AVAILABLE)
             {
                 emit updateLog(i18n("Can't show %1. Not plate solved.", m_Overlays[row].m_Filename));
                 return;
             }
             if (m_Overlays[row].m_Img.get() == nullptr)
             {
                 emit updateLog(i18n("Can't show %1. Image not loaded.", m_Overlays[row].m_Filename));
                 return;
             }
             const double ra = m_Overlays[row].m_RA;
             const double dec = m_Overlays[row].m_DEC;
 
             // Convert the RA/DEC from j2000 to jNow.
             auto localTime = KStarsData::Instance()->geo()->UTtoLT(KStarsData::Instance()->clock()->utc());
             const dms raDms(ra), decDms(dec);
             SkyPoint coord(raDms, decDms);
             coord.apparentCoord(static_cast<long double>(J2000), KStars::Instance()->data()->ut().djd());
 
             // Is this the right way to move to the SkyMap?
             Options::setIsTracking(false);
             SkyMap::Instance()->setFocusObject(nullptr);
             SkyMap::Instance()->setFocusPoint(nullptr);
             SkyMap::Instance()->setFocus(dms(coord.ra()), dms(coord.dec()));
 
             // Zoom factor is in pixels per radian.
             double zoomFactor = (400 * 60.0 *  10800.0) / (m_Overlays[row].m_Width * m_Overlays[row].m_ArcsecPerPixel * dms::PI);
             SkyMap::Instance()->setZoomFactor(zoomFactor);
 
             SkyMap::Instance()->forceUpdate(true);
         }
     }
 }
 
 void ImageOverlayComponent::abortSolving()
 {
     if (!m_Initialized) return;
     m_RowsToSolve.clear();
     if (m_Solver)
         m_Solver->abort();
     emit updateLog(i18n("Solving aborted."));
     m_SolveButton->setText(i18n("Solve"));
 }
 
 void ImageOverlayComponent::startSolving()
 {
     if (!m_Initialized) return;
     if (m_SolveButton->text() == i18n("Abort"))
     {
         abortSolving();
         return;
     }
     if (m_Solver && m_Solver->isRunning())
     {
         m_Solver->abort();
         if (m_RowsToSolve.size() > 0)
             m_TryAgainTimer.start(2000);
         return;
     }
 
     if (m_RowsToSolve.size() == 0)
     {
         QSet<int> selectedRows;
         auto selections = m_ImageOverlayTable->selectionModel();
         if (selections->hasSelection())
         {
             // Need to de-dup, as selecting the whole row will select all the columns.
             auto selectedIndexes = selections->selectedIndexes();
             for (int i = 0; i < selectedIndexes.count(); ++i)
             {
                 // Don't insert a row that's already solved.
                 const int row = selectedIndexes.at(i).row();
                 if ((m_Overlays[row].m_Status == ImageOverlay::AVAILABLE) &&
                         !shouldSolveAnyway(m_ImageOverlayTable, row))
                 {
                     emit updateLog(i18n("Skipping already solved: %1.", m_Overlays[row].m_Filename));
                     continue;
                 }
                 selectedRows.insert(row);
             }
         }
         m_RowsToSolve.clear();
         for (int row : selectedRows)
             m_RowsToSolve.push_back(row);
     }
 
     if (m_RowsToSolve.size() > 0)
     {
         const int row = m_RowsToSolve[0];
         const QString filename =
             QString("%1/%2").arg(m_Directory).arg(m_Overlays[row].m_Filename);
         if ((m_Overlays[row].m_Status == ImageOverlay::AVAILABLE) &&
                 !shouldSolveAnyway(m_ImageOverlayTable, row))
         {
             emit updateLog(i18n("%1 already solved. Skipping.", filename));
             m_RowsToSolve.removeFirst();
             if (m_RowsToSolve.size() > 0)
                 startSolving();
             return;
         }
 
         auto img = new QImage(filename);
         m_Overlays[row].m_Width = img->width();
         m_Overlays[row].m_Height = img->height();
         solveImage(filename);
     }
 }
 
 void ImageOverlayComponent::reload()
 {
     if (!m_Initialized) return;
     m_Initialized = false;
     emit updateLog(i18n("Reloading. Image overlays temporarily disabled."));
     updateTable();
     loadAllImageFiles();
 }
 
 void ImageOverlayComponent::solverDone(bool timedOut, bool success, const FITSImage::Solution &solution,
                                        double elapsedSeconds)
 {
     disconnect(m_Solver.get(), &SolverUtils::done, this, &ImageOverlayComponent::solverDone);
     m_SolveButton->setText(i18n("Solve"));
     if (m_RowsToSolve.size() == 0)
         return;
 
     const int solverRow = m_RowsToSolve[0];
     m_RowsToSolve.removeFirst();
 
     QComboBox *statusItem = dynamic_cast<QComboBox*>(m_ImageOverlayTable->cellWidget(solverRow, STATUS_COL));
     if (timedOut)
     {
         emit updateLog(i18n("Solver timed out in %1s", QString::number(elapsedSeconds, 'f', 1)));
         m_Overlays[solverRow].m_Status = ImageOverlay::PLATE_SOLVE_FAILURE;
         statusItem->setCurrentIndex(static_cast<int>(m_Overlays[solverRow].m_Status));
     }
     else if (!success)
     {
         emit updateLog(i18n("Solver failed in %1s", QString::number(elapsedSeconds, 'f', 1)));
         m_Overlays[solverRow].m_Status = ImageOverlay::PLATE_SOLVE_FAILURE;
         statusItem->setCurrentIndex(static_cast<int>(m_Overlays[solverRow].m_Status));
     }
     else
     {
         m_Overlays[solverRow].m_Orientation = solution.orientation;
         m_Overlays[solverRow].m_RA = solution.ra;
         m_Overlays[solverRow].m_DEC = solution.dec;
         m_Overlays[solverRow].m_ArcsecPerPixel = solution.pixscale;
         m_Overlays[solverRow].m_EastToTheRight = solution.parity;
         m_Overlays[solverRow].m_Status = ImageOverlay::AVAILABLE;
 
         QString msg = i18n("Solver success in %1s: RA %2 DEC %3 Scale %4 Angle %5",
                            QString::number(elapsedSeconds, 'f', 1),
                            QString::number(solution.ra, 'f', 2),
                            QString::number(solution.dec, 'f', 2),
                            QString::number(solution.pixscale, 'f', 2),
                            QString::number(solution.orientation, 'f', 2));
         emit updateLog(msg);
 
         // Store the new values in the table.
         auto overlay = m_Overlays[solverRow];
         m_ImageOverlayTable->item(solverRow, RA_COL)->setText(dms(overlay.m_RA).toHMSString());
         m_ImageOverlayTable->item(solverRow, DEC_COL)->setText(toDecString(overlay.m_DEC));
         m_ImageOverlayTable->item(solverRow, ARCSEC_PER_PIXEL_COL)->setText(
             QString("%1").arg(overlay.m_ArcsecPerPixel, 0, 'f', 2));
         m_ImageOverlayTable->item(solverRow, ORIENTATION_COL)->setText(QString("%1").arg(overlay.m_Orientation, 0, 'f', 2));
         QComboBox *ewItem = dynamic_cast<QComboBox*>(m_ImageOverlayTable->cellWidget(solverRow, EAST_TO_RIGHT_COL));
         ewItem->setCurrentIndex(overlay.m_EastToTheRight ? 1 : 0);
 
         QComboBox *statusItem = dynamic_cast<QComboBox*>(m_ImageOverlayTable->cellWidget(solverRow, STATUS_COL));
         statusItem->setCurrentIndex(static_cast<int>(overlay.m_Status));
 
         // Load the image.
         QString fullFilename = QString("%1/%2").arg(m_Directory).arg(m_Overlays[solverRow].m_Filename);
         QImage *img = loadImageFile(fullFilename, !m_Overlays[solverRow].m_EastToTheRight);
         m_Overlays[solverRow].m_Img.reset(img);
     }
     saveToUserDB();
 
     if (m_RowsToSolve.size() > 0)
         startSolving();
     else
     {
         emit updateLog(i18n("Done solving. %1 available.", numAvailable()));
         m_TableGroupBox->setTitle(i18n("Image Overlays.  %1 images, %2 available.", m_Overlays.size(), numAvailable()));
     }
 }