Fix metainfo linter

CMakeLists.txt

@@ -23,39 +23,41 @@ find_library(FITS_LIB cfitsio REQUIRED)
 find_library(RAW_LIB NAMES raw_r REQUIRED)
 find_library(WCS_LIB wcs wcslib REQUIRED)
 find_library(LCMS2_LIB lcms2 REQUIRED)
-find_library(STELLARSOLVER_LIB stellarsolver)
+find_library(STELLARSOLVER_LIB NAMES stellarsolver stellarsolver6)
 
 add_subdirectory(libXISF)
 
 set(TENMON_SRC
-    about.cpp about.h
-    batchprocessing.cpp batchprocessing.h batchprocessing.ui
-    chartgraph.h chartgraph.cpp
-    database.cpp database.h
-    databaseview.cpp databaseview.h
-    delete.cpp
-    filesystemwidget.cpp filesystemwidget.h
-    histogram.cpp histogram.h
-    httpdownloader.h httpdownloader.cpp
-    imageinfo.cpp imageinfo.h
-    imageinfodata.cpp imageinfodata.h
-    imageringlist.cpp imageringlist.h
-    imagescrollarea.cpp imagescrollarea.h
-    imagewidget.h imagewidget.cpp
-    loadimage.h loadimage.cpp
-    loadrunable.cpp loadrunable.h
-    main.cpp
-    mainwindow.cpp mainwindow.h
-    markedfiles.cpp markedfiles.h
-    mtfparam.h
-    rawimage.cpp rawimage.h
-    rawimage_sse.cpp
-    scriptengine.cpp scriptengine.h
-    settingsdialog.cpp settingsdialog.h
-    statusbar.cpp statusbar.h
-    stfslider.cpp stfslider.h
-    stretchtoolbar.cpp stretchtoolbar.h
-    tfloat16.h
+    src/about.cpp src/about.h
+    src/batchprocessing.cpp src/batchprocessing.h src/batchprocessing.ui
+    src/chartgraph.h src/chartgraph.cpp
+    src/database.cpp src/database.h
+    src/databaseview.cpp src/databaseview.h
+    src/delete.cpp
+    src/filemanager.h src/filemanager.cpp src/filemanager.ui
+    src/filesystemwidget.cpp src/filesystemwidget.h
+    src/fitskeyword.ui
+    src/histogram.cpp src/histogram.h
+    src/httpdownloader.h src/httpdownloader.cpp
+    src/imageinfo.cpp src/imageinfo.h
+    src/imageinfodata.cpp src/imageinfodata.h
+    src/imageringlist.cpp src/imageringlist.h
+    src/imagescrollarea.cpp src/imagescrollarea.h
+    src/imagewidget.h src/imagewidget.cpp
+    src/loadimage.h src/loadimage.cpp
+    src/loadrunable.cpp src/loadrunable.h
+    src/main.cpp
+    src/mainwindow.cpp src/mainwindow.h
+    src/markedfiles.cpp src/markedfiles.h
+    src/mtfparam.h
+    src/rawimage.cpp src/rawimage.h
+    src/rawimage_sse.cpp
+    src/scriptengine.cpp src/scriptengine.h
+    src/settingsdialog.cpp src/settingsdialog.h
+    src/statusbar.cpp src/statusbar.h
+    src/stfslider.cpp src/stfslider.h
+    src/stretchtoolbar.cpp src/stretchtoolbar.h
+    src/tfloat16.h
     thumbnailer/genthumbnail.cpp thumbnailer/genthumbnail.h
 )
 
@@ -77,7 +79,7 @@ endif()
 qt_add_executable(tenmon WIN32 MACOSX_BUNDLE ${tenmon_ICON} ${TENMON_SRC})
 
 find_path(FITS_INCLUDE fitsio2.h PATH_SUFFIXES cfitsio REQUIRED)
-target_include_directories(tenmon PRIVATE ${FITS_INCLUDE} ${CMAKE_BINARY_DIR} ${libXISF_SOURCE_DIR})
+target_include_directories(tenmon PRIVATE ${FITS_INCLUDE} ${CMAKE_BINARY_DIR} ${libXISF_SOURCE_DIR} "src")
 
 option(COLOR_MANAGMENT "Enable sRGB framebuffer support for gamma correct images and color profiles support" ON)
 if(COLOR_MANAGMENT)
@@ -96,9 +98,9 @@ if(STELLARSOLVER_INCLUDE AND STELLARSOLVER_LIB)
     endif(MXE)
     target_compile_definitions(tenmon PRIVATE "PLATESOLVER")
     target_sources(tenmon PRIVATE
-        solver.cpp solver.h
-        platesolving.cpp platesolving.h platesolving.ui
-        platesolvingsettings.cpp platesolvingsettings.h platesolvingsettings.ui
+        src/solver.cpp src/solver.h
+        src/platesolving.cpp src/platesolving.h src/platesolving.ui
+        src/platesolvingsettings.cpp src/platesolvingsettings.h src/platesolvingsettings.ui
     )
     message(STATUS "Found stellarsolver ${STELLARSOLVER_INCLUDE} ${STELLARSOLVER_LIB}")
 endif(STELLARSOLVER_INCLUDE AND STELLARSOLVER_LIB)

README

@@ -29,3 +29,5 @@ Then to build run standard cmake sequence
 For working plate solving you must have compiled and installed StellarSolver https://github.com/rlancaste/stellarsolver
 It is important that you compile StellarSolver with Qt6. By default it use Qt5 but when linked with Qt6 program it will
 crash.
+
+Using OpenNGC database https://github.com/mattiaverga/OpenNGC under CC-BY-SA-4.0 https://creativecommons.org/licenses/by-sa/4.0/

resources/grid.svg

@@ -0,0 +1,141 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="48"
+   height="48"
+   viewBox="0 0 12.699999 12.699999"
+   version="1.1"
+   id="svg5"
+   inkscape:version="1.2.2 (b0a8486541, 2022-12-01)"
+   sodipodi:docname="grid.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview7"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="mm"
+     showgrid="false"
+     inkscape:zoom="9.5144352"
+     inkscape:cx="39.361243"
+     inkscape:cy="25.067174"
+     inkscape:window-width="2510"
+     inkscape:window-height="1371"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer1" />
+  <defs
+     id="defs2">
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+       effect="skeletal"
+       id="path-effect636"
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+       lpeversion="1"
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+       copytype="single_stretched"
+       prop_scale="1"
+       scale_y_rel="false"
+       spacing="0"
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+       tang_offset="0"
+       prop_units="false"
+       vertical_pattern="false"
+       hide_knot="false"
+       fuse_tolerance="0" />
+    <inkscape:path-effect
+       effect="skeletal"
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+       is_visible="true"
+       lpeversion="1"
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+       copytype="single_stretched"
+       prop_scale="1"
+       scale_y_rel="false"
+       spacing="0"
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+       prop_units="false"
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+       fuse_tolerance="0" />
+    <inkscape:path-effect
+       effect="skeletal"
+       id="path-effect628"
+       is_visible="true"
+       lpeversion="1"
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+       copytype="single_stretched"
+       prop_scale="1"
+       scale_y_rel="false"
+       spacing="0"
+       normal_offset="0"
+       tang_offset="0"
+       prop_units="false"
+       vertical_pattern="false"
+       hide_knot="false"
+       fuse_tolerance="0" />
+    <inkscape:path-effect
+       effect="bspline"
+       id="path-effect624"
+       is_visible="true"
+       lpeversion="1"
+       weight="33.333333"
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+       helper_size="0"
+       apply_no_weight="true"
+       apply_with_weight="true"
+       only_selected="false" />
+    <inkscape:path-effect
+       effect="spiro"
+       id="path-effect620"
+       is_visible="true"
+       lpeversion="1" />
+  </defs>
+  <g
+     inkscape:label="Vrstva 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.503;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;stroke-dasharray:none"
+       d="M -5,-5 13,13"
+       id="path616"
+       sodipodi:nodetypes="cc" />
+    <circle
+       style="fill:none;stroke:#000000;stroke-width:0.503;stroke-linejoin:round;stroke-opacity:1;stroke-dasharray:none"
+       id="path643"
+       cx="-4.9824347"
+       cy="-4.9865055"
+       r="12.973718" />
+    <circle
+       style="fill:none;stroke:#000000;stroke-width:0.503;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       id="path1665"
+       cx="-4.9600825"
+       cy="-4.9741392"
+       r="17.086035" />
+    <circle
+       style="fill:none;stroke:#000000;stroke-width:0.503;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       id="path1667"
+       cx="-5.0079365"
+       cy="-5.0034046"
+       r="21.147657" />
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.467;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;stroke-dasharray:none"
+       d="M 14.371451,3.5622727 -4.9904999,-5.0054782 4.2432806,13.903978"
+       id="path1734" />
+    <circle
+       style="fill:none;stroke:#000000;stroke-width:0.503;stroke-linejoin:round;stroke-dasharray:none;stroke-opacity:1"
+       id="path1736"
+       cx="-5.155458"
+       cy="-5.1256938"
+       r="9.6808758" />
+  </g>
+</svg>

resources/resources.qrc

@@ -19,14 +19,16 @@
         <file>../translations/tenmon_pt_BR.qm</file>
         <file alias="help">../about/help_en</file>
         <file>colormap.png</file>
+        <file>ngc.db</file>
+        <file>grid.svg</file>
     </qresource>
-    <qresource prefix="/" lang="en">
+    <qresource lang="en" prefix="/">
         <file alias="help">../about/help_en</file>
     </qresource>
-    <qresource prefix="/" lang="sk">
+    <qresource lang="sk" prefix="/">
         <file alias="help">../about/help_sk</file>
     </qresource>
-    <qresource prefix="/" lang="fr">
+    <qresource lang="fr" prefix="/">
         <file alias="help">../about/help_fr</file>
     </qresource>
 </RCC>

scripts/modify FITS header

@@ -12,10 +12,12 @@ if(files.length == 0)
     throw "";
 }
 
-let action = core.getItem(["UPDATE", "ADD", "REMOVE"], "Do you want update, add or remove record?");
+let action = core.getItem(["UPDATE", "UPDATE_ADD", "ADD", "REMOVE"], "Do you want update, add or remove record?");
 
 let modify = new FITSRecordModify();
 
+let proceed = false;
+
 if(action == "UPDATE")
 {
     let keywords = files[0].fitsKeywords().filter(checkFITS);
@@ -25,28 +27,59 @@ if(action == "UPDATE")
         value = core.getString("Enter new value", value);
     else
         value = core.getFloat("Enter new value", value);
-    modify.updateKeyword(keyword, value);
+
+    if(keyword && value)
+    {
+        proceed = true;
+        modify.updateKeyword(keyword, value);
+    }
+}
+else if(action == "UPDATE_ADD")
+{
+    let keyword = core.getString("Enter keyword to update");
+    let value = core.getString("Enter new value");
+    if(keyword && value)
+    {
+        proceed = true;
+        keyword = keyword.toUpperCase();
+        modify.updateKeyword(keyword, value);
+    }
 }
 else if(action == "ADD")
 {
     let keyword = core.getString("Enter keyword to add");
     let value = core.getString("Enter new value");
-    keyword = keyword.toUpperCase();
-    modify.addKeyword(keyword, value);
+    if(keyword && value)
+    {
+        proceed = true;
+        keyword = keyword.toUpperCase();
+        modify.addKeyword(keyword, value);
+    }
 }
 else if(action == "REMOVE")
 {
     let keywords = files[0].fitsKeywords().filter(checkFITS);
     let keyword = core.getItem(keywords, "Select keyword to remove");
-    modify.removeKeyword(keyword);
-}
-
-for(file of files)
-{
-    if(file.suffix() == "fits" || file.suffix() == "fit" || file.suffix() == "xisf")
+    if(keyword)
     {
-        core.log("Modifing " + file.fileName());
-        file.modifyFITSRecords(modify);
+        proceed = true;
+        modify.removeKeyword(keyword);
     }
 }
 
+if(proceed)
+{
+    for(file of files)
+    {
+        if(file.suffix() == "fits" || file.suffix() == "fit" || file.suffix() == "xisf")
+        {
+            core.log("Modifing " + file.fileName());
+            file.modifyFITSRecords(modify);
+        }
+    }
+}
+else
+{
+    core.log("Canceled");
+}
+

space.nouspiro.tenmon.metainfo.xml

@@ -118,7 +118,7 @@
     </release>
     <release version="20240816" date="2024-08-16">
       <description>
-        Fix saving image
+        <p>Fix saving image</p>
       </description>
     </release>
     <release version="20240616" date="2024-06-16">

src/batchprocessing.cpp

@@ -100,6 +100,7 @@ BatchProcessing::BatchProcessing(Database *database, QWidget *parent) : QDialog(
 
     connect(_ui->addFilesButton, &QPushButton::released, this, &BatchProcessing::addFiles);
     connect(_ui->addDirButton, &QPushButton::released, this, &BatchProcessing::addDir);
+    connect(_ui->addMarkedButton, &QPushButton::released, this, &BatchProcessing::addMarked);
     connect(_ui->removeButton, &QPushButton::released, this, &BatchProcessing::removePath);
     connect(_ui->removeAllButton, &QPushButton::released, this, &BatchProcessing::removeAllPaths);
     connect(_ui->startButton, &QPushButton::released, this, &BatchProcessing::runScript);
@@ -164,6 +165,17 @@ void BatchProcessing::addDir()
     }
 }
 
+void BatchProcessing::addMarked()
+{
+    QStringList files = _database->getMarkedFiles();
+    for(const QString &file : files)
+    {
+        QFileInfo info(file);
+        if(info.exists() && info.isReadable())
+            _ui->pathsList->addItem(file);
+    };
+}
+
 void BatchProcessing::removePath()
 {
     for(auto &item : _ui->pathsList->selectedItems())

src/batchprocessing.h

@@ -28,6 +28,7 @@ protected:
 public slots:
     void addFiles();
     void addDir();
+    void addMarked();
     void removePath();
     void removeAllPaths();
     void browse();

src/batchprocessing.ui

@@ -52,6 +52,13 @@
          </property>
         </widget>
        </item>
+       <item>
+        <widget class="QPushButton" name="addMarkedButton">
+         <property name="text">
+          <string>Add marked</string>
+         </property>
+        </widget>
+       </item>
        <item>
         <widget class="QPushButton" name="removeButton">
          <property name="text">

src/database.cpp

@@ -16,10 +16,29 @@ bool Database::init(const QLatin1String &connectionName)
     QDir dir(path);
 
     database = QSqlDatabase::addDatabase("QSQLITE", connectionName);
+    ngc = QSqlDatabase::addDatabase("QSQLITE", connectionName + "ngc");
 
     if(!dir.mkpath("."))
         return false;
 
+    if(ngc.isValid())
+    {
+        QString ngcDb = dir.absoluteFilePath("ngc.db");
+        if(!QFile::exists(ngcDb))
+            QFile::copy(":/ngc.db", ngcDb);
+
+        ngc.setDatabaseName(ngcDb);
+        if(ngc.open())
+        {
+            m_getNgc = QSqlQuery(ngc);
+            m_getNgc.prepare("SELECT *,IIF(V_Mag IS NULL, B_Mag, V_Mag) AS mag FROM ngc WHERE RA_deg BETWEEN ? AND ? AND DEC_deg BETWEEN ? AND ?");
+        }
+        else
+        {
+            qDebug() << "Could not open NGC database";
+        }
+    }
+
     if(database.isValid())
     {
         database.setDatabaseName(dir.absoluteFilePath("database2.db"));
@@ -162,7 +181,7 @@ int Database::checkVersion(QSqlDatabase &db)
     return -1;
 }
 
-static QStringList nameFilters = {"*.fit", "*.fits", "*.fz", "*.xisf"};
+static QStringList nameFilters = {"*.fit", "*.fits", "*.fz", "*.fts", "*.xisf"};
 
 static int countFiles(const QDir &dir, QStringList &scannedDirs)
 {
@@ -182,7 +201,6 @@ void Database::indexDir(const QDir &dir, QProgressDialog *progress)
     QStringList scannedDirs;
     int count = countFiles(dir, scannedDirs);
     progress->setMaximum(count);
-    QSqlDatabase database = QSqlDatabase::database();
     database.transaction();
 
     scannedDirs.clear();
@@ -200,7 +218,6 @@ void Database::indexDir(const QDir &dir, QProgressDialog *progress)
 void Database::reindex(QProgressDialog *progress)
 {
     QVariantList deleteids;
-    QSqlDatabase database = QSqlDatabase::database();
     database.transaction();
     QSqlQuery size("SELECT COUNT(*) FROM fits_files", database);
     size.next();
@@ -239,6 +256,57 @@ QStringList Database::getFitsKeywords()
     return keywords;
 }
 
+QVector<SkyObject> Database::getObjects(double minRa, double maxRa, double minDec, double maxDec)
+{
+    QVector<SkyObject> objects;
+    if(!ngc.isOpen())return objects;
+
+    m_getNgc.bindValue(0, minRa);
+    m_getNgc.bindValue(1, maxRa);
+    m_getNgc.bindValue(2, minDec);
+    m_getNgc.bindValue(3, maxDec);
+
+    if(m_getNgc.exec())
+    {
+        while(m_getNgc.next())
+        {
+            QString name;
+            QString name2;
+            QString m = m_getNgc.value("M").toString();
+            QString ic = m_getNgc.value("IC").toString();
+            if(!m.isEmpty())
+            {
+                name = "M" + m;
+                m.clear();
+            }
+            else if(!ic.isEmpty())
+            {
+                name = "IC" + ic;
+                ic.clear();
+            }
+            else
+            {
+                name = m_getNgc.value("Name").toString();
+            }
+
+            if(!ic.isEmpty())name2 += "IC" + ic + " ";
+            name2 += m_getNgc.value("Common names").toString();
+
+            objects.append({
+                name,
+                name2,
+                {m_getNgc.value("RA_deg").toDouble(), m_getNgc.value("DEC_deg").toDouble()},
+                m_getNgc.value("MajAx").toDouble(),
+                m_getNgc.value("MinAx").toDouble(),
+                m_getNgc.value("PosAng").toDouble(),
+                m_getNgc.value("mag").isNull() ? NAN : m_getNgc.value("mag").toDouble(),
+                {0, 0},
+            });
+        }
+    }
+    return objects;
+}
+
 bool Database::indexDir2(const QDir &dir, QProgressDialog *progress, QStringList &scannedDirs)
 {
     if(scannedDirs.contains(dir.canonicalPath()))return true;
@@ -279,10 +347,10 @@ bool Database::indexFile(const QFileInfo &file)
         }
     }
 
-    bool ok;
-    if(filePath.endsWith(".xisf", Qt::CaseInsensitive))
+    bool ok = false;
+    if(isXISF(file.suffix()))
         ok = readXISFHeader(filePath, info);
-    else
+    else if(isFITS(file.suffix()))
         ok = readFITSHeader(filePath, info);
 
     qlonglong last_id = -1;
@@ -323,6 +391,7 @@ bool Database::indexFile(const QFileInfo &file)
         QVariantList file_id, keys, values, comments;
         for(const auto &record : info.fitsHeader)
         {
+            if(record.xisf && record.key.startsWith("PCL:"))continue;
             file_id << last_id;
             keys << QString(record.key);
             values << record.value.toString();

src/database.h

@@ -6,11 +6,13 @@
 #include <QSqlQuery>
 #include <QDir>
 #include <QProgressDialog>
+#include "imageinfodata.h"
 
 class Database : public QObject
 {
     Q_OBJECT
     QSqlDatabase database;
+    QSqlDatabase ngc;
     QSqlQuery m_markQuery;
     QSqlQuery m_unmarkQuery;
     QSqlQuery m_isMarkedQuery;
@@ -22,6 +24,8 @@ class Database : public QObject
     QSqlQuery m_headerKeywords;
     QSqlQuery m_deleteFile;
 
+    QSqlQuery m_getNgc;
+
     int m_progress;
 public:
     explicit Database(QObject *parent = 0);
@@ -37,6 +41,7 @@ public:
     void indexDir(const QDir &dir, QProgressDialog *progress);
     void reindex(QProgressDialog *progress);
     QStringList getFitsKeywords();
+    QVector<SkyObject> getObjects(double minRa, double maxRa, double minDec, double maxDec);
 protected:
     bool indexDir2(const QDir &dir, QProgressDialog *progress, QStringList &scannedDirs);
     bool indexFile(const QFileInfo &file);

src/filemanager.cpp

@@ -0,0 +1,437 @@
+#include "filemanager.h"
+#include "ui_filemanager.h"
+#include "ui_fitskeyword.h"
+
+#include <QSettings>
+#include <QStandardPaths>
+#include <QDesktopServices>
+#include "loadimage.h"
+
+PathTabBar::PathTabBar(const QStringList &tabs) :
+    _tabs(tabs)
+{
+    setTabsClosable(true);
+    setExpanding(false);
+
+    for(auto &t : _tabs)
+    {
+        QDir dir(t);
+        int i = addTab(tabName(t));
+        setTabToolTip(i, t);
+    }
+
+    connect(this, &QTabBar::currentChanged, [this](int index){
+        QString path = _tabs.at(index);
+        emit pathChanged(path);
+    });
+    connect(this, &QTabBar::tabCloseRequested, [this](int index){
+        if(_tabs.size() >= 2)
+        {
+            _tabs.remove(index);
+            removeTab(index);
+        }
+    });
+    connect(this, &QTabBar::currentChanged, [this](int index){
+        emit tabChanged(_tabs[index]);
+    });
+}
+
+QHBoxLayout *PathTabBar::createLayout()
+{
+    QHBoxLayout *hlayout = new QHBoxLayout();
+
+    hlayout->addWidget(this);
+    hlayout->addStretch(2);
+    QPushButton *addButton = new QPushButton("+");
+    connect(addButton, &QPushButton::clicked, [this](){
+        QString path = _tabs[currentIndex()];
+        _tabs.append(path);
+        int i = addTab(tabName(path));
+        setTabToolTip(i, path);
+    });
+    hlayout->addWidget(addButton);
+    return hlayout;
+}
+
+const QStringList &PathTabBar::tabPaths() const
+{
+    return _tabs;
+}
+
+QString PathTabBar::currentTabPath() const
+{
+    int index = std::clamp(currentIndex(), 0, (int)_tabs.size());
+    return _tabs[index];
+}
+
+void PathTabBar::pathChanged(const QString &path)
+{
+    QDir dir(path);
+    int index = currentIndex();
+    setTabText(index, tabName(path));
+    setTabToolTip(index, path);
+    _tabs[index] = path;
+}
+
+QString PathTabBar::tabName(const QString &path)
+{
+    QDir dir(path);
+    if(dir.dirName().isEmpty())
+        return path;
+    else
+        return dir.dirName();
+}
+
+FITSSelection::FITSSelection(const QStringList &keywords, QWidget *parent) : QDialog(parent)
+    ,ui(new Ui::FITSKeyword)
+{
+    ui->setupUi(this);
+    connect(ui->addButton, &QPushButton::clicked, [this](){
+        auto item = ui->keywordList->findItems(ui->keyword->text(), Qt::MatchFixedString | Qt::MatchCaseSensitive);
+        if(item.size())return;
+        ui->keywordList->addItem(ui->keyword->text());
+    });
+    connect(ui->removeButton, &QPushButton::clicked, [this](){
+        auto items = ui->keywordList->selectedItems();
+        for(auto item : items)
+            delete item;
+    });
+
+    ui->keywordList->addItems(keywords);
+}
+
+FITSSelection::~FITSSelection()
+{
+    delete ui;
+}
+
+QStringList FITSSelection::FITSKeywords() const
+{
+    QStringList keywords;
+    for(int i = 0; i < ui->keywordList->count(); i++)
+        keywords.append(ui->keywordList->item(i)->text());
+
+    return keywords;
+}
+
+FileManager::FileManager(const QSet<QString> &openFilter, QWidget *parent) : QMainWindow(parent)
+    ,ui(new Ui::FileManager)
+{
+    ui->setupUi(this);
+
+    QStringList standardLocations = QStandardPaths::standardLocations(QStandardPaths::PicturesLocation);
+    QString picturesPath;
+    if(standardLocations.size())
+        picturesPath = standardLocations.first();
+
+    QSettings settings;
+    QStringList leftTabs = settings.value("filemanager/leftTabPaths", picturesPath).toStringList();
+    QStringList rightTabs = settings.value("filemanager/rightTabPaths", picturesPath).toStringList();
+    if(leftTabs.empty())leftTabs.append(picturesPath);
+    if(rightTabs.empty())rightTabs.append(picturesPath);
+
+    ui->leftTab->setOpenFilter(openFilter);
+    ui->rightTab->setOpenFilter(openFilter);
+
+    _rightTabBar = new PathTabBar(rightTabs);
+    ui->rightLayout->insertLayout(0, _rightTabBar->createLayout());
+    connect(_rightTabBar, &PathTabBar::tabChanged, ui->rightTab, &DirView::setDir);
+
+    _leftTabBar = new PathTabBar(leftTabs);
+    ui->leftLayout->insertLayout(0, _leftTabBar->createLayout());
+    connect(_leftTabBar, &PathTabBar::tabChanged, ui->leftTab, &DirView::setDir);
+
+    connect(ui->leftTab, &DirView::dirChanged, ui->leftPath, &QLineEdit::setText);
+    connect(ui->leftTab, &DirView::dirChanged, _leftTabBar, &PathTabBar::pathChanged);
+    connect(ui->rightTab, &DirView::dirChanged, ui->rightPath, &QLineEdit::setText);
+    connect(ui->rightTab, &DirView::dirChanged, _rightTabBar, &PathTabBar::pathChanged);
+    connect(ui->leftTab, &DirView::openFile, this, &FileManager::openFile);
+    connect(ui->rightTab, &DirView::openFile, this, &FileManager::openFile);
+    connect(ui->actionLoad_FITS_keywordsLeft, &QAction::toggled, ui->leftTab, &DirView::loadFitsKeywords);
+    connect(ui->actionLoad_FITS_keywordsRight, &QAction::toggled, ui->rightTab, &DirView::loadFitsKeywords);
+
+    ui->leftTab->setDir(_leftTabBar->currentTabPath());
+    ui->leftTab->setFITSKeywords(settings.value("filemanager/leftFitsKeywords", QStringList("OBJECT")).toStringList());
+    ui->leftTab->header()->restoreState(settings.value("filemanager/leftTabHeader").toByteArray());
+    ui->rightTab->setDir(_rightTabBar->currentTabPath());
+    ui->rightTab->setFITSKeywords(settings.value("filemanager/rightFitsKeywords", QStringList("OBJECT")).toStringList());
+    ui->rightTab->header()->restoreState(settings.value("filemanager/rightTabHeader").toByteArray());
+
+    ui->actionLoad_FITS_keywordsLeft->setChecked(settings.value("filemanager/leftLoadFitsKeywords", true).toBool());
+    ui->actionLoad_FITS_keywordsRight->setChecked(settings.value("filemanager/rightLoadFitsKeywords", true).toBool());
+    restoreGeometry(settings.value("filemanager/geometry").toByteArray());
+
+    setAttribute(Qt::WA_DeleteOnClose);
+
+    connect(ui->actionSelect_columnsLeft, &QAction::triggered, this, &FileManager::selectFITSKeywords);
+    connect(ui->actionSelect_columnsRight, &QAction::triggered, this, &FileManager::selectFITSKeywords);
+    connect(ui->leftPath, &QLineEdit::returnPressed, this, &FileManager::pathEdited);
+    connect(ui->rightPath, &QLineEdit::returnPressed, this, &FileManager::pathEdited);
+
+    QFileInfoList drives = QDir::drives();
+    for(auto &drive : drives)
+    {
+        QString path = drive.absoluteFilePath();
+        ui->menuLeft_Tab->addAction(drive.absoluteFilePath(), [path, this](){ ui->leftTab->setDir(path); });
+        ui->menuRight_Tab->addAction(drive.absoluteFilePath(), [path, this](){ ui->rightTab->setDir(path); });
+    }
+}
+
+FileManager::~FileManager()
+{
+    QSettings settings;
+    settings.setValue("filemanager/leftFitsKeywords", ui->leftTab->FITSKeywords());
+    settings.setValue("filemanager/leftTabPaths", _leftTabBar->tabPaths());
+    settings.setValue("filemanager/leftTabHeader", ui->leftTab->header()->saveState());
+    settings.setValue("filemanager/rightFitsKeywords", ui->rightTab->FITSKeywords());
+    settings.setValue("filemanager/rightTabPaths", _rightTabBar->tabPaths());
+    settings.setValue("filemanager/rightTabHeader", ui->rightTab->header()->saveState());
+    settings.setValue("filemanager/leftLoadFitsKeywords", ui->actionLoad_FITS_keywordsLeft->isChecked());
+    settings.setValue("filemanager/rightLoadFitsKeywords", ui->actionLoad_FITS_keywordsRight->isChecked());
+    settings.setValue("filemanager/geometry", saveGeometry());
+    delete ui;
+}
+
+void FileManager::selectFITSKeywords()
+{
+    QStringList columns;
+    if(sender() == ui->actionSelect_columnsLeft)
+        columns = ui->leftTab->FITSKeywords();
+    if(sender() == ui->actionSelect_columnsRight)
+        columns = ui->rightTab->FITSKeywords();
+
+    FITSSelection selection(columns, this);
+    int ret = selection.exec();
+
+    if(ret == QDialog::Accepted)
+    {
+        if(sender() == ui->actionSelect_columnsLeft)
+            ui->leftTab->setFITSKeywords(selection.FITSKeywords());
+
+        if(sender() == ui->actionSelect_columnsRight)
+            ui->rightTab->setFITSKeywords(selection.FITSKeywords());
+    }
+}
+
+void FileManager::pathEdited()
+{
+    if(sender() == ui->leftPath)
+    {
+        QDir dir(ui->leftPath->text());
+        if(dir.exists())
+            ui->leftTab->setDir(dir.absolutePath());
+    }
+    if(sender() == ui->rightPath)
+    {
+        QDir dir(ui->rightPath->text());
+        if(dir.exists())
+            ui->rightTab->setDir(dir.absolutePath());
+    }
+}
+
+QCache<QString, ImageInfoData>* DirFileSystemModel::getCacheInstance()
+{
+    static bool init = true;
+    static QCache<QString, ImageInfoData> cache;
+    if(!init)
+    {
+        cache.setMaxCost(10000);
+        init = false;
+    }
+    return &cache;
+}
+
+DirFileSystemModel::DirFileSystemModel(QObject *parent) : QFileSystemModel(parent)
+{
+    _cache = getCacheInstance();
+    setFilter(QDir::AllEntries | QDir::NoDot);
+    _fitsKeywords = {"OBJECT"};
+}
+
+void DirFileSystemModel::setDir(const QString &path)
+{
+    _dir = index(path);
+}
+
+QString DirFileSystemModel::dir() const
+{
+    return fileInfo(_dir).canonicalFilePath();
+}
+
+void DirFileSystemModel::setFITSKeywords(const QStringList &keywords)
+{
+    beginResetModel();
+    _fitsKeywords = keywords;
+    endResetModel();
+}
+
+const QStringList &DirFileSystemModel::FITSKeywords() const
+{
+    return _fitsKeywords;
+}
+
+Qt::ItemFlags DirFileSystemModel::flags(const QModelIndex &index) const
+{
+    return QFileSystemModel::flags(index) & ~Qt::ItemIsEditable;
+}
+
+int DirFileSystemModel::columnCount(const QModelIndex &parent) const
+{
+    return QFileSystemModel::columnCount(parent) + _fitsKeywords.size();
+}
+
+QVariant DirFileSystemModel::data(const QModelIndex &index, int role) const
+{
+    if(index.column() >= QFileSystemModel::columnCount() && role == Qt::DisplayRole)
+    {
+        QFileInfo info = fileInfo(index);
+        QString path = info.canonicalFilePath();
+        QString suffix = info.suffix();
+        ImageInfoData *infoData = nullptr;
+        if(_cache->contains(path))
+        {
+            infoData = _cache->object(path);
+        }
+        else
+        {
+            if(_loadFitsKeywords)
+            {
+                infoData = new ImageInfoData;
+                if(isFITS(suffix))
+                    readFITSHeader(path, *infoData);
+                else if(isXISF(suffix))
+                    readXISFHeader(path, *infoData);
+                _cache->insert(path, infoData);
+            }
+        }
+        if(infoData)
+        {
+            int column = index.column() - QFileSystemModel::columnCount();
+            if(column < _fitsKeywords.size())
+            {
+                const QString &key = _fitsKeywords.at(column);
+                for(auto &record : infoData->fitsHeader)
+                    if(record.key == key)
+                        return record.value;
+            }
+        }
+        return "";
+    }
+    return QFileSystemModel::data(index, role);
+}
+
+QVariant DirFileSystemModel::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if(orientation == Qt::Horizontal && role == Qt::DisplayRole && section >= QFileSystemModel::columnCount())
+        return _fitsKeywords.at(section - QFileSystemModel::columnCount());
+
+    return QFileSystemModel::headerData(section, orientation, role);
+}
+
+bool DirFileSystemModel::hasChildren(const QModelIndex &parent) const
+{
+    if(parent.parent() == _dir)return false;
+
+    return QFileSystemModel::hasChildren(parent);
+}
+
+void DirFileSystemModel::loadFitsKeywords(bool enable)
+{
+    _loadFitsKeywords = enable;
+}
+
+DirView::DirView(QWidget *parent) : QTreeView(parent)
+{
+    _dirFileSystemModel = new DirFileSystemModel(this);
+    _dirFileSystemModel->setRootPath(QDir::drives().first().path());
+    _dirFileSystemModel->setReadOnly(false);
+    setDragEnabled(true);
+    setAcceptDrops(true);
+
+    setModel(_dirFileSystemModel);
+    setSelectionMode(QAbstractItemView::ExtendedSelection);
+
+    connect(this, &QTreeView::doubleClicked, [this](const QModelIndex &index){
+        QFileInfo info = _dirFileSystemModel->fileInfo(index);
+        if(_dirFileSystemModel->isDir(index))
+        {
+            setDir(info.canonicalFilePath());
+        }
+        else if(info.isFile())
+        {
+            if(_openFilter.contains(info.suffix().toLower()))
+                emit openFile(info.absoluteFilePath());
+            else
+                QDesktopServices::openUrl(QUrl::fromLocalFile(info.absoluteFilePath()));
+        }
+    });
+
+    header()->setContextMenuPolicy(Qt::CustomContextMenu);
+    connect(header(), &QHeaderView::customContextMenuRequested, this, &DirView::headerContextMenu);
+}
+
+void DirView::setDir(const QString &path)
+{
+    QString oldPath = _dirFileSystemModel->dir();
+#ifdef Q_OS_WINDOWS
+    const int ROOT_LEN = 3;
+#else
+    const int ROOT_LEN = 1;
+#endif
+
+    if(oldPath.left(ROOT_LEN) != path.left(ROOT_LEN))
+        _dirFileSystemModel->setRootPath(path.left(ROOT_LEN));
+
+    _dirFileSystemModel->setDir(path);
+    setRootIndex(_dirFileSystemModel->index(path, 0));
+    clearSelection();
+    if(oldPath != path)emit dirChanged(path);
+}
+
+QString DirView::dir() const
+{
+    return _dirFileSystemModel->dir();
+}
+
+void DirView::setOpenFilter(const QSet<QString> &openFilter)
+{
+    _openFilter = openFilter;
+}
+
+void DirView::setFITSKeywords(const QStringList &keywords)
+{
+    QString d = dir();
+    _dirFileSystemModel->setFITSKeywords(keywords);
+    setDir(d);
+}
+
+const QStringList &DirView::FITSKeywords() const
+{
+    return _dirFileSystemModel->FITSKeywords();
+}
+
+void DirView::headerContextMenu(const QPoint &pos)
+{
+    QHeaderView *head = header();
+    QMenu menu;
+    int count = head->count();
+    for(int i = 0; i < count; i++)
+    {
+        QAction *a = menu.addAction(head->model()->headerData(i, Qt::Horizontal).toString());
+        a->setCheckable(true);
+        a->setChecked(!head->isSectionHidden(i));
+        a->setData(i);
+    }
+
+    QAction *a = menu.exec(mapToGlobal(pos));
+    if(a)
+    {
+        if(a->isChecked())head->showSection(a->data().toInt());
+        else head->hideSection(a->data().toInt());
+    }
+}
+
+void DirView::loadFitsKeywords(bool enable)
+{
+    _dirFileSystemModel->loadFitsKeywords(enable);
+}

src/filemanager.h

@@ -0,0 +1,106 @@
+#ifndef FILEMANAGER_H
+#define FILEMANAGER_H
+
+#include <QMainWindow>
+#include <QCache>
+#include <QFileSystemModel>
+#include <QTreeView>
+#include <QDialog>
+#include <QTabBar>
+#include <QHBoxLayout>
+#include "imageinfodata.h"
+
+namespace Ui {
+class FileManager;
+class FITSKeyword;
+}
+
+class PathTabBar : public QTabBar
+{
+    Q_OBJECT
+public:
+    explicit PathTabBar(const QStringList &tabs);
+    QHBoxLayout* createLayout();
+    const QStringList& tabPaths() const;
+    QString currentTabPath() const;
+public slots:
+    void pathChanged(const QString &path);
+signals:
+    void tabChanged(const QString &path);
+private:
+    QStringList _tabs;
+    QString tabName(const QString &path);
+};
+
+class FITSSelection : public QDialog
+{
+    Q_OBJECT
+public:
+    FITSSelection(const QStringList &keywords, QWidget *parent = nullptr);
+    ~FITSSelection();
+    QStringList FITSKeywords() const;
+private:
+    Ui::FITSKeyword *ui;
+};
+
+class FileManager : public QMainWindow
+{
+    Q_OBJECT
+public:
+    explicit FileManager(const QSet<QString> &openFilter, QWidget *parent = nullptr);
+    ~FileManager();
+public slots:
+    void selectFITSKeywords();
+    void pathEdited();
+signals:
+    void openFile(const QString &path);
+private:
+    Ui::FileManager *ui;
+    PathTabBar *_leftTabBar;
+    PathTabBar *_rightTabBar;
+};
+
+class DirFileSystemModel : public QFileSystemModel
+{
+    Q_OBJECT
+    mutable QCache<QString, ImageInfoData> *_cache = nullptr;
+    static QCache<QString, ImageInfoData>* getCacheInstance();
+    QModelIndex _dir;
+    QStringList _fitsKeywords;
+    bool _loadFitsKeywords = true;
+public:
+    explicit DirFileSystemModel(QObject *parent = nullptr);
+    void setDir(const QString &path);
+    QString dir() const;
+    void setFITSKeywords(const QStringList &keywords);
+    const QStringList& FITSKeywords() const;
+    Qt::ItemFlags flags(const QModelIndex &index) const override;
+    int columnCount(const QModelIndex &parent) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+    QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+    bool hasChildren(const QModelIndex &parent) const override;
+public slots:
+    void loadFitsKeywords(bool enable);
+};
+
+class DirView : public QTreeView
+{
+    Q_OBJECT
+    DirFileSystemModel *_dirFileSystemModel = nullptr;
+    QSet<QString> _openFilter;
+public:
+    explicit DirView(QWidget *parent = nullptr);
+    void setDir(const QString &path);
+    QString dir() const;
+    void setOpenFilter(const QSet<QString> &openFilter);
+    void setFITSKeywords(const QStringList &keywords);
+    const QStringList& FITSKeywords() const;
+public slots:
+    void headerContextMenu(const QPoint &pos);
+    void loadFitsKeywords(bool enable);
+signals:
+    void dirChanged(const QString &path);
+    void openFile(const QString &path);
+};
+
+#endif // FILEMANAGER_H

src/filemanager.ui

@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>FileManager</class>
+ <widget class="QMainWindow" name="FileManager">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>1282</width>
+    <height>858</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>File Manager</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QHBoxLayout" name="horizontalLayout">
+    <item>
+     <layout class="QVBoxLayout" name="leftLayout">
+      <item>
+       <widget class="QLineEdit" name="leftPath"/>
+      </item>
+      <item>
+       <widget class="DirView" name="leftTab"/>
+      </item>
+     </layout>
+    </item>
+    <item>
+     <layout class="QVBoxLayout" name="rightLayout">
+      <item>
+       <widget class="QLineEdit" name="rightPath"/>
+      </item>
+      <item>
+       <widget class="DirView" name="rightTab"/>
+      </item>
+     </layout>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>1282</width>
+     <height>23</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menuLeft_Tab">
+    <property name="title">
+     <string>Left Tab</string>
+    </property>
+    <addaction name="actionLoad_FITS_keywordsLeft"/>
+    <addaction name="actionSelect_columnsLeft"/>
+    <addaction name="separator"/>
+   </widget>
+   <widget class="QMenu" name="menuRight_Tab">
+    <property name="title">
+     <string>Right Tab</string>
+    </property>
+    <addaction name="actionLoad_FITS_keywordsRight"/>
+    <addaction name="actionSelect_columnsRight"/>
+    <addaction name="separator"/>
+   </widget>
+   <addaction name="menuLeft_Tab"/>
+   <addaction name="menuRight_Tab"/>
+  </widget>
+  <action name="actionLoad_FITS_keywordsLeft">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="checked">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Load FITS keywords</string>
+   </property>
+  </action>
+  <action name="actionLoad_FITS_keywordsRight">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="checked">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Load FITS keywords</string>
+   </property>
+  </action>
+  <action name="actionSelect_columnsLeft">
+   <property name="text">
+    <string>Select columns</string>
+   </property>
+  </action>
+  <action name="actionSelect_columnsRight">
+   <property name="text">
+    <string>Select columns</string>
+   </property>
+  </action>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>DirView</class>
+   <extends>QTreeView</extends>
+   <header>filemanager.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>

src/filesystemwidget.cpp

@@ -5,6 +5,7 @@
 #include <QMenu>
 #include <QSettings>
 #include <QHeaderView>
+#include <QMimeDatabase>
 
 FilesystemWidget::FilesystemWidget(QAbstractItemModel *model, QWidget *parent) : QWidget(parent)
   , m_model(model)
@@ -117,6 +118,7 @@ void Filetree::contextMenuEvent(QContextMenuEvent *event)
     {
         setRootIndex(index);
         m_rootDir = m_fileSystemModel->filePath(index);
+        m_fileSystemModel->setRootPath(m_rootDir);
     }
     else if(a == resetRoot)
     {
@@ -127,6 +129,7 @@ void Filetree::contextMenuEvent(QContextMenuEvent *event)
     {
         setRootIndex(rootIndex().parent());
         m_rootDir = m_fileSystemModel->filePath(rootIndex().parent());
+        m_fileSystemModel->setRootPath(m_rootDir);
     }
     else if(a == copy)
     {

src/filesystemwidget.h

@@ -3,6 +3,7 @@
 
 #include <QWidget>
 #include <QFileSystemModel>
+#include <QIdentityProxyModel>
 #include <QListView>
 #include <QTreeView>
 

src/fitskeyword.ui

@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>FITSKeyword</class>
+ <widget class="QDialog" name="FITSKeyword">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>432</width>
+    <height>443</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>FITS Columns</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QListWidget" name="keywordList">
+     <property name="dragEnabled">
+      <bool>true</bool>
+     </property>
+     <property name="dragDropMode">
+      <enum>QAbstractItemView::InternalMove</enum>
+     </property>
+     <property name="defaultDropAction">
+      <enum>Qt::MoveAction</enum>
+     </property>
+     <property name="selectionMode">
+      <enum>QAbstractItemView::ExtendedSelection</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QLineEdit" name="keyword"/>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QPushButton" name="addButton">
+       <property name="text">
+        <string>Add</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="removeButton">
+       <property name="text">
+        <string>Remove</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>FITSKeyword</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>215</x>
+     <y>420</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>215</x>
+     <y>221</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>FITSKeyword</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>215</x>
+     <y>420</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>215</x>
+     <y>221</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

src/imageinfodata.cpp

@@ -4,6 +4,7 @@
 #include <QRegularExpression>
 #include <wcslib/wcshdr.h>
 #include <wcslib/wcsfix.h>
+#include "database.h"
 #include "libxisf.h"
 
 static const QVector<QByteArray> noEditableKey = {"SIMPLE", "BITPIX", "NAXIS", "NAXIS1", "NAXIS2", "NAXIS3", "EXTEND", "BZERO", "BSCALE"};
@@ -85,6 +86,7 @@ WCSDataT::WCSDataT(int width, int height, const QVector<FITSRecord> &header) :
     for(const FITSRecord &record : header)
     {
         if(record.key.startsWith("PV"))continue;
+        if(record.xisf)continue;
 
         QByteArray rec;
         rec.append(record.key.leftJustified(8, ' '));
@@ -153,9 +155,9 @@ bool WCSDataT::worldToPixel(const SkyPoint &point, QPointF &pixel) const
     return false;
 }
 
-void WCSDataT::calculateBounds(double &minRa, double &maxRa, double &minDec, double &maxDec, double &crVal1, double &crVal2) const
+bool WCSDataT::calculateBounds(double &minRa, double &maxRa, double &minDec, double &maxDec, double &crVal1, double &crVal2) const
 {
-    if(wcs == nullptr)return;
+    if(wcs == nullptr)return false;
 
     minRa = 1000;
     maxRa = -1000;
@@ -208,6 +210,7 @@ void WCSDataT::calculateBounds(double &minRa, double &maxRa, double &minDec, dou
         if(s.contains(scp))
             minDec = -90;
     }
+    return true;
 }
 
 double hav(double x)
@@ -266,6 +269,16 @@ QString SkyPoint::toString() const
     return QString("RA: %1 DEC: %2° %3' %4\"").arg(t.toString("HH'h' mm'm' ss's'")).arg(deg, 2, 'f', 0, '0').arg(min, 2, 'f', 0, '0').arg(sec, 2, 'f', 0, '0');
 }
 
+QString SkyPoint::RAString() const
+{
+    return toHMS(ra / 15);
+}
+
+QString SkyPoint::DECString() const
+{
+    return toDMS(dec);
+}
+
 double SkyPoint::fromHMS(const QString &hms)
 {
     double deg = fromDMS(hms);
@@ -308,11 +321,21 @@ QString SkyPoint::toHMS(double decHour)
 
 QString SkyPoint::toDMS(double deg)
 {
+    int sign = deg < 0.0 ? -1 : 1;
+    deg *= sign;
     double d,m,s,md;
     md = std::modf(deg, &d) * 60.0;
     s = std::modf(md, &m) * 60.0;
 
-    return QString("%1˚ %2' %3\"").arg((int)d, 2, 10, QChar('0')).arg((int)m, 2, 10, QChar('0')).arg((int)s, 2, 10, QChar('0'));
+    return QString("%1˚ %2' %3\"").arg((int)d * sign, 2, 10, QChar('0')).arg((int)m, 2, 10, QChar('0')).arg((int)s, 2, 10, QChar('0'));
+}
+
+SkyPoint SkyPoint::operator+(const SkyPoint &p)
+{
+    SkyPoint ret;
+    ret.ra = ra + p.ra;
+    ret.dec = dec + p.dec;
+    return ret;
 }
 
 SkyPointScale ImageInfoData::getCenterRaDec() const
@@ -403,3 +426,148 @@ SkyPointScale ImageInfoData::getCenterRaDec() const
     }
     return ret;
 }
+
+SkyPoint greatCircle(SkyPoint &p, double dist, double azm)
+{
+    dist = dist * M_PI / 180;
+    azm = azm * M_PI / 180;
+    double dec0 = p.DEC() * M_PI / 180;
+    double ra0 = p.RA() * M_PI / 180;
+    double dec1 = std::asin(std::sin(dec0) * std::cos(dist) + std::cos(dec0) * std::sin(dist) * std::cos(azm));
+    double ra1 = ra0 + std::atan2(std::sin(azm) * std::sin(dist) * std::cos(dec0), std::cos(dist) - std::sin(dec0) * std::sin(dec1));
+    return SkyPoint(ra1 * 180 / M_PI, dec1 * 180 / M_PI);
+}
+
+SkyGrid WCSDataT::prepareGrid(uint32_t w, uint32_t h, Database *database)
+{
+    SkyGrid skyGrid;
+    if(!wcs)return skyGrid;
+
+    double minRa, maxRa, minDec, maxDec, crVal1, crVal2;
+    calculateBounds(minRa, maxRa, minDec, maxDec, crVal1, crVal2);
+
+    QPointF a,b;
+    worldToPixel(SkyPoint(crVal1, crVal2), a);
+    worldToPixel(SkyPoint(crVal1 + 0.01, crVal2), b);
+    skyGrid.rot_ang = std::atan2(b.y() - a.y(), b.x() - a.x()) / M_PI * -180.0;
+
+    if(database)
+    {
+        skyGrid.objects = database->getObjects(minRa, maxRa, minDec, maxDec);
+        for(auto &object : skyGrid.objects)
+        {
+            QPointF p;
+            if(worldToPixel(object.skyPoint, p))
+                object.pixel = p;
+
+            QPointF majax;
+            worldToPixel(greatCircle(object.skyPoint, (object.min_ax + object.maj_ax) / 120.0, object.pos_ang), majax);
+            majax -= p;
+            object.maj_ax = std::sqrt(QPointF::dotProduct(majax, majax));
+        }
+    }
+
+    double raStep = 15;
+    double decStep = 15;
+    double raRange = maxRa - minRa;
+    double decRange = maxDec - minDec;
+    const QVector<double> raSteps = {15, 5, 2.5, 1.25, 0.25, 20/240.0, 10/240.0, 5/240.0, 1/240.0};
+    const QVector<double> decSteps = {20, 10, 5, 2, 1, 20/60.0, 10/60.0, 5/60.0, 2/60.0, 1/60.0, 20/3600.0, 10/3600.0, 5/3600.0, 2/3600.0, 1/3600.0};
+
+    for(double ra : raSteps)
+    {
+        if(ra * 5 <= raRange)
+        {
+            raStep = ra;
+            break;
+        }
+    }
+
+    for(double dec : decSteps)
+    {
+        if(dec * 5 <= decRange)
+        {
+            decStep = dec;
+            break;
+        }
+    }
+
+    minRa -= std::fmod(minRa, raStep);
+    minDec -= std::fmod(minDec, decStep);
+    if(minRa < 0)minRa -= raStep;
+    if(minDec < 0)minDec -= decStep;
+
+    QRectF clip(0, 0, w, h);
+    const double step = 0.2;
+
+    maxRa += raStep;
+    maxDec += decStep;
+    for(double ra = minRa; ra <= maxRa; ra += raStep)
+    {
+        QPointF p;
+        worldToPixel(SkyPoint(ra, minDec), p);
+        skyGrid.grid.moveTo(p);
+        for(double dec = minDec + decStep * step; dec <= maxDec; dec += decStep * step)
+        {
+            worldToPixel(SkyPoint(ra, dec), p);
+            skyGrid.grid.lineTo(p);
+        }
+    }
+
+    for(double dec = minDec; dec <= maxDec; dec += decStep)
+    {
+        QPointF p;
+        worldToPixel(SkyPoint(minRa, dec), p);
+        skyGrid.grid.moveTo(p);
+        for(double ra = minRa + raStep * step; ra <= maxRa; ra += raStep * step)
+        {
+            worldToPixel(SkyPoint(ra, dec), p);
+            skyGrid.grid.lineTo(p);
+        }
+    }
+
+    SkyPoint sp1, sp2,orig;
+    pixelToWorld(QPointF(-1, -1), orig);
+    sp1 = orig;
+    for(uint32_t x = 0; x < w; x++)
+    {
+        QPointF p(x, 0);
+        if(!pixelToWorld(p, sp2))
+            break;
+
+        if(static_cast<int>(sp1.RA() / raStep) != static_cast<int>(sp2.RA() / raStep))
+            skyGrid.text.append({p, std::abs(sp1.RA()) > std::abs(sp2.RA()) ? sp1.RAString() : sp2.RAString()});
+
+        if(static_cast<int>(sp1.DEC() / decStep) != static_cast<int>(sp2.DEC() / decStep))
+            skyGrid.text.append({p, std::abs(sp1.DEC()) > std::abs(sp2.DEC()) ? sp1.DECString() : sp2.DECString()});
+
+        sp1 = sp2;
+    }
+
+    sp1 = orig;
+    for(uint32_t y = 0; y < h; y++)
+    {
+        QPointF p(0, y);
+        if(!pixelToWorld(p, sp2))
+            break;
+
+        if(static_cast<int>(sp1.RA() / raStep) != static_cast<int>(sp2.RA() / raStep))
+            skyGrid.text.append({p, std::abs(sp1.RA()) > std::abs(sp2.RA()) ? sp1.RAString() : sp2.RAString()});
+
+        if(static_cast<int>(sp1.DEC() / decStep) != static_cast<int>(sp2.DEC() / decStep))
+            skyGrid.text.append({p, std::abs(sp1.DEC()) > std::abs(sp2.DEC()) ? sp1.DECString() : sp2.DECString()});
+
+        sp1 = sp2;
+    }
+
+    skyGrid.empty = false;
+    return skyGrid;
+}
+
+void SkyGrid::clear()
+{
+    empty = true;
+    grid.clear();
+    text.clear();
+    objects.clear();
+}

src/imageinfodata.h

@@ -5,12 +5,15 @@
 #include <QPointF>
 #include <QVector>
 #include <QVariant>
+#include <QPainterPath>
 #include <wcslib/wcs.h>
 #include <cmath>
 #include <memory>
 
 namespace LibXISF { struct FITSKeyword; struct Property; }
 
+class Database;
+
 struct FITSRecord
 {
     QByteArray key;
@@ -36,10 +39,13 @@ public:
     double RAHour() const { return ra / 15.0; }
     double DEC() const { return dec; }
     QString toString() const;
+    QString RAString() const;
+    QString DECString() const;
     static double fromHMS(const QString &hms);
     static double fromDMS(const QString &dms);
     static QString toHMS(double decHour);
     static QString toDMS(double deg);
+    SkyPoint operator+(const SkyPoint &p);
 };
 
 struct SkyPointScale
@@ -51,6 +57,28 @@ struct SkyPointScale
     double scaleHigh = 10000.0;
 };
 
+struct SkyObject
+{
+    QString name;
+    QString name2;
+    SkyPoint skyPoint;
+    double maj_ax;
+    double min_ax;
+    double pos_ang;
+    double mag;
+    QPointF pixel;
+};
+
+struct SkyGrid
+{
+    bool empty = true;
+    QPainterPath grid;
+    QVector<QPair<QPointF, QString>> text;
+    QVector<SkyObject> objects;
+    double rot_ang = 0;
+    void clear();
+};
+
 class WCSDataT
 {
     int nwcs = 0;
@@ -65,9 +93,10 @@ public:
     ~WCSDataT();
     bool pixelToWorld(const QPointF &pixel, SkyPoint &point) const;
     bool worldToPixel(const SkyPoint &point, QPointF &pixel) const;
-    void calculateBounds(double &minRa, double &maxRa, double &minDec, double &maxDec, double &crVal1, double &crVal2) const;
+    bool calculateBounds(double &minRa, double &maxRa, double &minDec, double &maxDec, double &crVal1, double &crVal2) const;
     bool valid() const { return wcs; };
     SkyPointScale getRaDecScale() const;
+    SkyGrid prepareGrid(uint32_t w, uint32_t h, Database *database);
 };
 
 struct ImageInfoData

src/imagescrollarea.cpp

@@ -142,6 +142,11 @@ void ImageScrollArea::falseColor(bool enable)
     m_imageWidget->falseColor(enable);
 }
 
+void ImageScrollArea::drawGrid(bool enable)
+{
+    m_imageWidget->drawGrid(enable);
+}
+
 QImage ImageScrollArea::renderToImage()
 {
     return m_imageWidget->renderToImage();

src/imagescrollarea.h

@@ -31,6 +31,7 @@ public slots:
     void invert(bool enable);
     void superPixel(bool enable);
     void falseColor(bool enable);
+    void drawGrid(bool enable);
     QImage renderToImage();
 protected slots:
     void scrollEvent();

src/imagewidget.cpp

@@ -180,6 +180,10 @@ void ImageWidgetGL::setImage(std::shared_ptr<RawImage> image, int index)
 void ImageWidgetGL::setWCS(std::shared_ptr<WCSDataT> wcs)
 {
     m_wcs = wcs;
+    m_grid.clear();
+
+    if(m_drawGrid && m_wcs)
+        m_grid = m_wcs->prepareGrid(m_imgWidth, m_imgHeight, m_database);
 }
 
 void ImageWidgetGL::zoom(int zoom, const QPointF &mousePos)
@@ -496,6 +500,18 @@ void swPaint(std::shared_ptr<RawImage> &rawImage, float dx, float dy, float scal
     painter.drawImage(0, 0, img);
 }
 
+void ImageWidgetGL::drawGrid(bool enable)
+{
+    if(m_grid.empty && m_wcs)
+        m_grid = m_wcs->prepareGrid(m_imgWidth, m_imgHeight, m_database);
+
+    if(enable != m_drawGrid)
+    {
+        m_drawGrid = enable;
+        update();
+    }
+}
+
 void ImageWidgetGL::paintGL()
 {
     float dx = m_dx;
@@ -613,9 +629,43 @@ void ImageWidgetGL::paintGL()
             m_program->setUniformValue("colormapIdx", m_colormapIdx);
             f->glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
             m_vao->release();
+
+            if(m_drawGrid && !m_grid.empty)
+            {
+                QPainter painter(this);
+                painter.setRenderHint(QPainter::Antialiasing);
+                painter.setRenderHint(QPainter::TextAntialiasing);
+
+                painter.setPen(QPen(Qt::yellow, 1.0 / m_scale));
+                QTransform tran;
+                tran.translate(-std::floor(dx), -std::floor(dy));
+                tran.scale(m_scale, m_scale);
+                painter.setTransform(tran);
+                painter.setClipRect(0, 0, m_imgWidth, m_imgHeight);
+                painter.drawPath(m_grid.grid);
+                painter.setPen(Qt::yellow);
+                QFont font({"Arial", "serif-sans"});
+                font.setPointSizeF(12 / m_scale);
+                painter.setFont(font);
+                for(auto &text : m_grid.text)
+                    painter.drawText(QRectF(text.first, QSizeF(4000, 4000)), text.second);
+
+                painter.setPen(QPen(Qt::green, 1.0 / m_scale));
+                QFontMetricsF fontMetric = QFontMetricsF(font);
+                for(auto &object : m_grid.objects)
+                {
+                    QRectF rect = fontMetric.boundingRect(object.name);
+                    rect.moveCenter(object.pixel);
+                    painter.setTransform(tran);
+                    painter.drawText(rect, Qt::TextDontClip, object.name);
+
+                    painter.translate(object.pixel);
+                    painter.rotate(object.pos_ang);
+                    painter.drawEllipse(QPointF(0, 0), object.maj_ax, object.maj_ax);
+                }
+            }
         }
     }
-
 }
 
 void ImageWidgetGL::resizeGL(int w, int h)

src/imagewidget.h

@@ -8,6 +8,7 @@
 #include <QOpenGLTexture>
 #include <QOpenGLVertexArrayObject>
 #include <QOpenGLFunctions>
+#include <QPainterPath>
 #include "database.h"
 #include "rawimage.h"
 #include "imageinfodata.h"
@@ -37,6 +38,7 @@ public:
     virtual QImage renderToImage() = 0;
     virtual void thumbnailLoaded(const Image *image) = 0;
     virtual void showThumbnail(bool enable) = 0;
+    virtual void drawGrid(bool enable) = 0;
 
     static QImage loadColormap();
 };
@@ -70,6 +72,7 @@ class ImageWidgetGL : public QOpenGLWidget, public ImageWidget
     GLuint m_debayerTex = 0;
     std::shared_ptr<RawImage> m_rawImage;
     std::shared_ptr<WCSDataT> m_wcs;
+    SkyGrid m_grid;
     int m_width, m_height;
     int m_imgWidth = -1, m_imgHeight = -1;
     int m_currentImg = 0;
@@ -87,6 +90,7 @@ class ImageWidgetGL : public QOpenGLWidget, public ImageWidget
     bool m_selecting = false;
     bool m_sizesDirty = false;
     bool m_srgb = false;
+    bool m_drawGrid = false;
     int m_thumbnailCount = 0;
     int m_maxTextureSize = 0;
     int m_maxArrayLayers = 0;
@@ -116,6 +120,7 @@ public:
     QImage renderToImage() override;
     void thumbnailLoaded(const Image *image) override;
     void showThumbnail(bool enable) override;
+    void drawGrid(bool enable) override;
 protected:
     void paintGL() override;
     void resizeGL(int w, int h) override;

src/loadimage.cpp

@@ -241,18 +241,59 @@ bool loadXISF(const QString &path, ImageInfoData &info, std::shared_ptr<RawImage
         {
             info.fitsHeader.append(fits);
         }
+
+        QVector<FITSRecord> xisfWCS;
         auto imageproperties = xisfImage.imageProperties();
         for(auto prop : imageproperties)
         {
             info.fitsHeader.append(prop);
+            if(prop.id == "PCL:AstrometricSolution:ReferenceCelestialCoordinates" && prop.value.type() == LibXISF::Variant::Type::F64Vector)
+            {
+                auto val = prop.value.value<LibXISF::F64Vector>();
+                if(val.size() >= 2)
+                {
+                    xisfWCS.append({"CRVAL1", val[0], "value from PCL:AstrometricSolution"});
+                    xisfWCS.append({"CRVAL2", val[1], "value from PCL:AstrometricSolution"});
+                }
+            }
+            else if(prop.id == "PCL:AstrometricSolution:ReferenceImageCoordinates" && prop.value.type() == LibXISF::Variant::Type::F64Vector)
+            {
+                auto val = prop.value.value<LibXISF::F64Vector>();
+                if(val.size() >= 2)
+                {
+                    xisfWCS.append({"CRPIX1", val[0], "value from PCL:AstrometricSolution"});
+                    xisfWCS.append({"CRPIX2", val[1], "value from PCL:AstrometricSolution"});
+                }
+            }
+            else if(prop.id == "PCL:AstrometricSolution:LinearTransformationMatrix" && prop.value.type() == LibXISF::Variant::Type::F64Matrix)
+            {
+                auto val = prop.value.value<LibXISF::F64Matrix>();
+                if(val.cols() >= 2 && val.rows() >= 2)
+                {
+                    xisfWCS.append({"CD1_1", val(0, 0), "value from PCL:AstrometricSolution"});
+                    xisfWCS.append({"CD1_2", val(0, 1), "value from PCL:AstrometricSolution"});
+                    xisfWCS.append({"CD2_1", val(1, 0), "value from PCL:AstrometricSolution"});
+                    xisfWCS.append({"CD2_2", val(1, 1), "value from PCL:AstrometricSolution"});
+                }
+            }
+            else if(prop.id == "PCL:AstrometricSolution:ProjectionSystem")
+            {
+                if(prop.value.toString() == "Gnomonic")
+                {
+                    xisfWCS.append({"CTYPE1", "RA---TAN", "value from PCL:AstrometricSolution"});
+                    xisfWCS.append({"CTYPE", "DEC--TAN", "value from PCL:AstrometricSolution"});
+                }
+            }
         }
 
         info.num = xisf.imagesCount();
         info.index = index;
-        info.wcs = std::make_shared<WCSDataT>(xisfImage.width(), xisfImage.height(), info.fitsHeader);
         info.info.append({QObject::tr("Width"), QString::number(xisfImage.width())});
         info.info.append({QObject::tr("Height"), QString::number(xisfImage.height())});
-        if(!info.wcs->valid())info.wcs.reset();
+
+        auto wcs = std::make_shared<WCSDataT>(xisfImage.width(), xisfImage.height(), info.fitsHeader);
+        if(!wcs->valid() && xisfWCS.size())wcs = std::make_shared<WCSDataT>(xisfImage.width(), xisfImage.height(), xisfWCS);
+        if(wcs->valid())info.wcs = wcs;
 
         RawImage::DataType type;
         switch(xisfImage.sampleFormat())
@@ -409,18 +450,19 @@ bool loadImage(const QString &path, ImageInfoData &info, std::shared_ptr<RawImag
 {
     bool ret = false;
     QElapsedTimer timer;
+    QFileInfo fileInfo(path);
     timer.start();
     if(path.endsWith(".CR2", Qt::CaseInsensitive) || path.endsWith(".CR3", Qt::CaseInsensitive) || path.endsWith(".NEF", Qt::CaseInsensitive) || path.endsWith(".DNG", Qt::CaseInsensitive))
     {
         ret = loadRAW(path, info, rawImage);
         qDebug() << "LoadRAW" << timer.elapsed();
     }
-    else if(path.endsWith(".FIT", Qt::CaseInsensitive) || path.endsWith(".FITS", Qt::CaseInsensitive) || path.endsWith(".FZ", Qt::CaseInsensitive) || path.endsWith(".FTS", Qt::CaseInsensitive))
+    else if(isFITS(fileInfo.suffix()))
     {
         ret = loadFITS(path, info, rawImage, planar, index);
         qDebug() << "LoadFITS" << timer.elapsed();
     }
-    else if(path.endsWith(".XISF", Qt::CaseInsensitive))
+    else if(isXISF(fileInfo.suffix()))
     {
         ret = loadXISF(path, info, rawImage, planar, index);
         qDebug() << "LoadXISF" << timer.elapsed();
@@ -444,3 +486,13 @@ bool loadImage(const QString &path, ImageInfoData &info, std::shared_ptr<RawImag
     }
     return ret;
 }
+
+bool isFITS(const QString &suffix)
+{
+    return suffix.compare("fits", Qt::CaseInsensitive) == 0 || suffix.compare("fit", Qt::CaseInsensitive) == 0 || suffix.compare("fts", Qt::CaseInsensitive) == 0 || suffix.compare("fz", Qt::CaseInsensitive) == 0;
+}
+
+bool isXISF(const QString &suffix)
+{
+    return suffix.compare("xisf", Qt::CaseInsensitive) == 0;
+}

src/loadimage.h

@@ -10,5 +10,7 @@ QString makeUNCPath(const QString &path);
 bool readFITSHeader(const QString &path, ImageInfoData &info);
 bool readXISFHeader(const QString &path, ImageInfoData &info);
 bool loadImage(const QString &path, ImageInfoData &info, std::shared_ptr<RawImage> &rawImage, int index, bool planar = false);
+bool isFITS(const QString &suffix);
+bool isXISF(const QString &suffix);
 
 #endif // LOADIMAGE_H

src/loadrunable.cpp

@@ -165,11 +165,12 @@ void writeFITSImage(fitsfile *fw, std::shared_ptr<RawImage> rawimage, ImageInfoD
         double vald = record.value.toDouble(&isdouble);
         int valb = record.value.toString() == "T";
         long long vall = record.value.toLongLong(&isint);
+        if(isint)isint = vall == vald;
         QByteArray str = record.value.toString().toLatin1();
-        if(isdouble)
-            fits_write_key(fw, TDOUBLE, record.key.data(), &vald, record.comment.isEmpty() ? nullptr : record.comment.data(), &status);
-        else if(isint)
+        if(isint)
             fits_write_key(fw, TLONGLONG, record.key.data(), &vall, record.comment.isEmpty() ? nullptr : record.comment.data(), &status);
+        else if(isdouble)
+            fits_write_key(fw, TDOUBLE, record.key.data(), &vald, record.comment.isEmpty() ? nullptr : record.comment.data(), &status);
         else if(isbool)
             fits_write_key(fw, TLOGICAL, record.key.data(), &valb, record.comment.isEmpty() ? nullptr : record.comment.data(), &status);
         else if(record.key == "COMMENT")

src/main.cpp

@@ -4,7 +4,7 @@
 #include <QTranslator>
 #include <QCommandLineParser>
 #include <stdlib.h>
-#include "thumbnailer/genthumbnail.h"
+#include "../thumbnailer/genthumbnail.h"
 
 int main(int argc, char *argv[])
 {

src/mainwindow.cpp

@@ -29,6 +29,7 @@
 #include "settingsdialog.h"
 #include "histogram.h"
 #include "batchprocessing.h"
+#include "filemanager.h"
 
 #ifdef __linux__
 #include <sys/ioctl.h>
@@ -66,6 +67,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     _openFilter.append(tr(";;All files (*)"));
     nameFilter.append({"fit", "fits", "fts", "fz", "xisf", "cr2", "cr3", "nef", "dng"});
     QImageReader::setAllocationLimit(0);
+    _openSuffix = {nameFilter.constBegin(), nameFilter.constEnd()};
 
     m_info = new ImageInfo(this);
     QDockWidget *infoDock = new QDockWidget(tr("Image info"), this);
@@ -92,6 +94,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     connect(m_stretchPanel, &StretchToolbar::invert, m_image, &ImageScrollArea::invert);
     connect(m_stretchPanel, &StretchToolbar::superPixel, m_image, &ImageScrollArea::superPixel);
     connect(m_stretchPanel, &StretchToolbar::falseColor, m_image, &ImageScrollArea::falseColor);
+    connect(m_stretchPanel, &StretchToolbar::drawGrid, m_image, &ImageScrollArea::drawGrid);
 
     m_ringList = new ImageRingList(m_database, nameFilter, this);
     m_filesystem = new FilesystemWidget(m_ringList, this);
@@ -99,11 +102,14 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     connect(m_filesystem, &FilesystemWidget::sortChanged, m_ringList, &ImageRingList::setSort);
     connect(m_filesystem, &FilesystemWidget::reverseSort, m_ringList, &ImageRingList::reverseSort);
 
+    m_filetree = nullptr;
+#if !defined(FLATPAK) || !defined(__aarch64__)//bug with QTreeView and QFileSystemModel on ARM64 under flatpak
     m_filetree = new Filetree(this);
     connect(m_filetree, &Filetree::fileSelected, this, static_cast<void (MainWindow::*)(const QString &)>(&MainWindow::loadFile));
     connect(m_filetree, &Filetree::copyFiles, [this](const QString &path){ copyOrMove(true, path); });
     connect(m_filetree, &Filetree::moveFiles, [this](const QString &path){ copyOrMove(false, path); });
     connect(m_filetree, &Filetree::indexDirectory, this, static_cast<void (MainWindow::*)(const QString &)>(&MainWindow::indexDir));
+#endif
 
     m_databaseView = new DataBaseView(m_database, this);
     connect(m_databaseView, &DataBaseView::loadFile, this, static_cast<void (MainWindow::*)(const QString &)>(&MainWindow::loadFile));
@@ -142,11 +148,14 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     databaseViewDock->hide();
     addDockWidget(Qt::BottomDockWidgetArea, databaseViewDock);
 
-    QDockWidget *filetreeDock = new QDockWidget(tr("File tree"), this);
+    QDockWidget *filetreeDock = nullptr;
+#if !defined(FLATPAK) || !defined(__aarch64__)
+    filetreeDock = new QDockWidget(tr("File tree"), this);
     filetreeDock->setWidget(m_filetree);
     filetreeDock->setObjectName("filetreeDock");
     databaseViewDock->hide();
     addDockWidget(Qt::LeftDockWidgetArea, filetreeDock);
+#endif
 
     Histogram *histogram = new Histogram(this);
     QDockWidget *histogramDock = new QDockWidget(tr("Histogram"), this);
@@ -175,6 +184,9 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     fileMenu->addAction(tr("Open directory recursively"), this, &MainWindow::loadDir);
     QAction *saveAs = fileMenu->addAction(tr("Save as"), QKeySequence::Save, this, &MainWindow::saveAs);
     fileMenu->addSeparator();
+#if !defined(FLATPAK) || !defined(__aarch64__)
+    fileMenu->addAction(tr("File manager"), this, &MainWindow::openFileManager);
+#endif
     fileMenu->addAction(tr("Copy marked files"), Qt::Key_F5, this, &MainWindow::copyMarked);
     fileMenu->addAction(tr("Move marked files"), Qt::Key_F6, this, &MainWindow::moveMarked);
     fileMenu->addAction(tr("Move marked files to trash"), QKeySequence::Delete, this, &MainWindow::deleteMarked);
@@ -190,7 +202,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     fileMenu->addSeparator();
     QAction *liveModeAction = fileMenu->addAction(tr("Live mode"), this, &MainWindow::liveMode);
     liveModeAction->setCheckable(true);
-    QAction *exitAction = fileMenu->addAction(tr("Exit"), this, &MainWindow::close);
+    QAction *exitAction = fileMenu->addAction(tr("Exit"), QCoreApplication::instance(), &QCoreApplication::quit, Qt::QueuedConnection);
     exitAction->setShortcut(QKeySequence::Quit);
     menuBar()->addMenu(fileMenu);
 
@@ -263,7 +275,9 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     QAction *slideshowAction = viewMenu->addAction(tr("Slideshow"), Qt::Key_F3, m_ringList, &ImageRingList::toggleSlideshow);
     slideshowAction->setCheckable(true);
     viewMenu->addSeparator();
-    viewMenu->addActions(m_stretchPanel->actions());
+    auto actionList = m_stretchPanel->actions();
+    actionList.removeFirst();
+    viewMenu->addActions(actionList);
     menuBar()->addMenu(viewMenu);
 
     QMenu *selectMenu = new QMenu(tr("Select"), this);
@@ -309,7 +323,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     dockMenu->addAction(navigationToolbar->toggleViewAction());
     dockMenu->addAction(filesystemDock->toggleViewAction());
     dockMenu->addAction(databaseViewDock->toggleViewAction());
-    dockMenu->addAction(filetreeDock->toggleViewAction());
+    if(filetreeDock)dockMenu->addAction(filetreeDock->toggleViewAction());
     dockMenu->addAction(histogramDock->toggleViewAction());
 #ifdef PLATESOLVER
     dockMenu->addAction(_plateSolving->toggleViewAction());
@@ -360,7 +374,8 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
         infoDock->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetMovable);
         filesystemDock->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetMovable);
         databaseViewDock->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetMovable);
-        filetreeDock->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetMovable);
+        if(filetreeDock)filetreeDock->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetMovable);
+        if(_plateSolving)_plateSolving->setFeatures(QDockWidget::DockWidgetClosable | QDockWidget::DockWidgetMovable);
         m_stretchPanel->setFloatable(false);
     }
 }
@@ -805,6 +820,15 @@ void MainWindow::checkNewVersion()
     });
 }
 
+void MainWindow::openFileManager()
+{
+#if !defined(FLATPAK) || !defined(__aarch64__)
+    FileManager *filemanager = new FileManager(_openSuffix);
+    connect(filemanager, &FileManager::openFile, this, static_cast<void (MainWindow::*)(const QString&)>(&MainWindow::loadFile));
+    filemanager->show();
+#endif
+}
+
 void MainWindow::updateWindowTitle()
 {
     ImagePtr ptr = m_ringList->currentImage();

src/mainwindow.h

@@ -23,13 +23,14 @@ class MainWindow : public QMainWindow
     FilesystemWidget *m_filesystem;
     Filetree *m_filetree;
     DataBaseView *m_databaseView;
-    PlateSolving *_plateSolving;
+    PlateSolving *_plateSolving = nullptr;
     static int socketPair[2];
     QSocketNotifier *socketNotifier;
     QString _lastDir;
     bool _maximized;
     QString _openFilter;
     QString _saveFilter;
+    QSet<QString> _openSuffix;
 public:
     MainWindow(QWidget *parent = 0);
     ~MainWindow() override;
@@ -67,6 +68,7 @@ public slots:
     void showSettingsDialog();
     void exportCSV();
     void checkNewVersion();
+    void openFileManager();
 };
 
 #endif // MAINWINDOW_H

src/platesolving.h

@@ -1,7 +1,7 @@
 #ifndef PLATESOLVING_H
 #define PLATESOLVING_H
 
-#include "qelapsedtimer.h"
+#include <QElapsedTimer>
 #include <QDockWidget>
 
 class Solver;

src/rawimage.cpp

@@ -403,9 +403,9 @@ uint32_t RawImage::norm() const
     }
 }
 
-uint32_t RawImage::widthBytes() const
+uint64_t RawImage::widthBytes() const
 {
-    return m_ch * m_width * typeSize(m_type);
+    return (uint64_t)m_ch * m_width * typeSize(m_type);
 }
 
 uint32_t RawImage::widthSamples() const

src/rawimage.h

@@ -97,7 +97,7 @@ public:
     uint64_t size() const;
     DataType type() const;
     uint32_t norm() const;
-    uint32_t widthBytes() const;
+    uint64_t widthBytes() const;
     uint32_t widthSamples() const;
     void* data();
     const void* data() const;

src/scriptengine.cpp

@@ -92,6 +92,55 @@ bool ScriptEngine::isMarked(const File *file)
     return ret;
 }
 
+QJSValue ScriptEngine::getObjects(double ra, double dec, double distance)
+{
+    QVector<SkyObject> objects;
+    QMetaObject::invokeMethod(_database, [this, ra, dec, distance](){
+        return _database->getObjects(ra - distance, ra + distance, dec - distance, dec + distance); }, Qt::BlockingQueuedConnection, &objects);
+
+    QJSValue ret = newArray(objects.size());
+    qint32 i = 0;
+    for(auto &object : objects)
+    {
+        QJSValue jsObj = newObject();
+        jsObj.setProperty("name", object.name);
+        jsObj.setProperty("name2", object.name2);
+        jsObj.setProperty("ra", object.skyPoint.RA());
+        jsObj.setProperty("dec", object.skyPoint.DEC());
+        jsObj.setProperty("mag", object.mag);
+        ret.setProperty(i++, jsObj);
+    }
+
+    return ret;
+}
+
+QJSValue ScriptEngine::getObjects(const QJSValue &bounds)
+{
+    QVector<SkyObject> objects;
+    double minRa = bounds.property("minRA").toNumber();
+    double maxRa = bounds.property("maxRA").toNumber();
+    double minDec = bounds.property("minDEC").toNumber();
+    double maxDec = bounds.property("maxDEC").toNumber();
+
+    QMetaObject::invokeMethod(_database, [this, minRa, maxRa, minDec, maxDec](){
+        return _database->getObjects(minRa, maxRa, minDec, maxDec); }, Qt::BlockingQueuedConnection, &objects);
+
+    QJSValue ret = newArray(objects.size());
+    qint32 i = 0;
+    for(auto &object : objects)
+    {
+        QJSValue jsObj = newObject();
+        jsObj.setProperty("name", object.name);
+        jsObj.setProperty("name2", object.name2);
+        jsObj.setProperty("ra", object.skyPoint.RA());
+        jsObj.setProperty("dec", object.skyPoint.DEC());
+        jsObj.setProperty("mag", object.mag);
+        ret.setProperty(i++, jsObj);
+    }
+
+    return ret;
+}
+
 void ScriptEngine::setMaxThread(int maxthread)
 {
     int newval = std::max(std::min(QThread::idealThreadCount(), maxthread), 1);
@@ -406,16 +455,18 @@ void File::loadFitsKeywords()
     {
         _fitsKeywordsLoaded = true;
         ImageInfoData info;
-        if(suffix().toLower() == "xisf")
+        if(isXISF(suffix()))
         {
             readXISFHeader(_path, info);
         }
-        else if(suffix().toLower() == "fits" || suffix().toLower() == "fit")
+        else if(isFITS(suffix()))
         {
             readFITSHeader(_path, info);
         }
         else return;
 
+        _wcs = info.wcs;
+
         for(auto &record : info.fitsHeader)
         {
             _fitsKeywords.append(record.key);
@@ -788,6 +839,24 @@ QJSValue File::stats()
     return _stats;
 }
 
+QJSValue File::calculatedBounds()
+{
+    QJSValue ret = _engine->newObject();
+    loadFitsKeywords();
+    if(_wcs)
+    {
+        double minRa, maxRa, minDec, maxDec, crVal1, crVal2;
+        _wcs->calculateBounds(minRa, maxRa, minDec, maxDec, crVal1, crVal2);
+        ret.setProperty("minRA", minRa);
+        ret.setProperty("maxRA", maxRa);
+        ret.setProperty("minDEC", minDec);
+        ret.setProperty("maxDEC", maxDec);
+        ret.setProperty("crVal1", crVal1);
+        ret.setProperty("crVal2", crVal2);
+    }
+    return ret;
+}
+
 #ifdef PLATESOLVER
 QJSValue File::solve(bool updateHeader)
 {

src/scriptengine.h

@@ -41,6 +41,8 @@ public:
     Q_INVOKABLE void mark(File *file);
     Q_INVOKABLE void unmark(File *file);
     Q_INVOKABLE bool isMarked(const File *file);
+    Q_INVOKABLE QJSValue getObjects(double ra, double dec, double distance);
+    Q_INVOKABLE QJSValue getObjects(const QJSValue &bounds);
     Q_INVOKABLE void setMaxThread(int maxthread);
     Q_INVOKABLE void sync();
     Q_INVOKABLE QJSValue getString(const QString &label = QString(), const QString &text = QString()) const;
@@ -96,6 +98,7 @@ class File : public QObject
     bool _fitsKeywordsLoaded = false;
     QStringList _fitsKeywords;
     QMultiHash<QString, FITSRecord> _fitsRecords;
+    std::shared_ptr<WCSDataT> _wcs;
     void loadFitsKeywords();
     bool mkpath(const QString &path) const;
     QJSValue _stats;
@@ -124,6 +127,7 @@ public:
     Q_INVOKABLE File* convert(const QString &outpath, const QString &format, const QVariantMap &params = QVariantMap());
     Q_INVOKABLE File* convertAsync(const QString &outpath, const QString &format, const QVariantMap &params = QVariantMap());
     Q_INVOKABLE QJSValue stats();
+    Q_INVOKABLE QJSValue calculatedBounds();
 #ifdef PLATESOLVER
     Q_INVOKABLE QJSValue solve(bool updateHeader = false);
     Q_INVOKABLE QJSValue extractStars(bool hfr);

src/stretchtoolbar.cpp

@@ -89,6 +89,11 @@ StretchToolbar::StretchToolbar(QWidget *parent) : QToolBar(tr("Stretch toolbar")
 
     m_autoStretchOnLoad = addAction(QIcon(":/nuke_a.png"), tr("Apply auto stretch on load"));
     m_autoStretchOnLoad->setCheckable(true);
+
+    QAction *showGridButton = addAction(QIcon(":/grid.svg"), tr("Draw equatorial grid"));
+    showGridButton->setCheckable(true);
+    connect(showGridButton, &QAction::toggled, this, &StretchToolbar::drawGrid);
+
     QSettings settings;
     m_autoStretchOnLoad->setChecked(settings.value("stretchtoolbar/autostretch", false).toBool());
 }

src/stretchtoolbar.h

@@ -33,6 +33,7 @@ signals:
     void invert(bool enable);
     void superPixel(bool enable);
     void falseColor(bool enable);
+    void drawGrid(bool enable);
 };
 
 #endif // STRETCHTOOLBAR_H

thumbnailer/CMakeLists.txt

@@ -6,9 +6,9 @@ if(BUILD_THUMBNAILER)
             Dll.cpp
             loadimage.cpp
             TenmonThumbnailProvider.cpp
-            ../rawimage.h
-            ../rawimage.cpp
-            ../rawimage_sse.cpp)
+            ../src/rawimage.h
+            ../src/rawimage.cpp
+            ../src/rawimage_sse.cpp)
         set_target_properties(tenmonthumbnailer PROPERTIES PREFIX "")
 
         target_compile_definitions(tenmonthumbnailer PRIVATE NO_QT)
@@ -19,8 +19,8 @@ if(BUILD_THUMBNAILER)
         qt_add_executable(tenmonthumbnailer
             main.cpp
             loadimage.cpp
-            ../rawimage.cpp
-            ../rawimage_sse.cpp)
+            ../src/rawimage.cpp
+            ../src/rawimage_sse.cpp)
 
         target_link_libraries(tenmonthumbnailer PRIVATE ${FITS_LIB} XISF)
 

thumbnailer/TenmonThumbnailProvider.cpp

@@ -2,7 +2,7 @@
 #include <thumbcache.h> // For IThumbnailProvider.
 #include <new>
 #include "libxisf.h"
-#include "../rawimage.h"
+#include "../src/rawimage.h"
 
 bool loadXISF(const LibXISF::ByteArray &data, std::shared_ptr<RawImage> &rawImage);
 bool loadFITS(const LibXISF::ByteArray &data, std::shared_ptr<RawImage> &rawImage);

thumbnailer/genthumbnail.cpp

@@ -1,7 +1,6 @@
 #include "genthumbnail.h"
-#include "../rawimage.h"
-#include "../loadimage.h"
-
+#include "../src/rawimage.h"
+#include "../src/loadimage.h"
 
 int generateThumbnail(const QString &input, const QString &output, uint32_t size)
 {

thumbnailer/loadimage.cpp

@@ -1,5 +1,5 @@
 #include "libxisf.h"
-#include "../rawimage.h"
+#include "../src/rawimage.h"
 #ifdef WIN32
 #include <windows.h>
 #endif

thumbnailer/main.cpp

@@ -1,7 +1,7 @@
 #include <vector>
 #include <string>
 #include <iostream>
-#include "../rawimage.h"
+#include "../src/rawimage.h"
 #define STB_IMAGE_WRITE_IMPLEMENTATION
 #include "stb_image_write.h"