Add generating thumbnails from cmd line

imageringlist.cpp

@@ -113,6 +113,7 @@ ImageRingList::ImageRingList(Database *database, const QStringList &nameFilter,
   , m_analyzeLevel(None)
   , m_database(database)
   , m_nameFilter(nameFilter)
+  , m_fileSuffix(nameFilter)
 {
     connect(&m_fileSystemWatcher, SIGNAL(directoryChanged(QString)), this, SLOT(dirChanged(QString)));
     m_nameFilter.replaceInStrings(QRegularExpression("^"), "*.");
@@ -170,8 +171,8 @@ bool ImageRingList::setDir(const QString path, const QString &currentFile, bool
         };
 
         scanDir(path);
-        qDebug() << absolutePaths.size();
-        setFiles(absolutePaths, m_liveMode ? absolutePaths.first() : currentFile);
+        //qDebug() << absolutePaths.size();
+        setFilesPrivate(absolutePaths, m_liveMode ? absolutePaths.first() : currentFile);
 
         m_fileSystemWatcher.removePaths(m_fileSystemWatcher.directories());
         m_fileSystemWatcher.addPath(path);
@@ -192,6 +193,17 @@ void ImageRingList::setFile(const QString &file)
     }
 }
 
+void ImageRingList::setFiles(QStringList files)
+{
+    QRegularExpression reg("(" + m_fileSuffix.join("|") + ")");
+    files.removeIf([&reg](const QString &file){
+        QFileInfo info(file);
+        auto match = reg.match(info.suffix());
+        return !match.hasMatch() || !info.exists() || !info.isReadable() || !info.isFile();
+    });
+    setFilesPrivate(files);
+}
+
 ImagePtr ImageRingList::currentImage()
 {
     if(m_images.size())
@@ -237,11 +249,11 @@ void ImageRingList::decrement()
 void ImageRingList::setMarked()
 {
     QStringList files = m_database->getMarkedFiles();
-    std::remove_if(files.begin(), files.end(), [](const QString &file){
+    files.removeIf([](const QString &file){
         QFileInfo info(file);
         return !info.exists() || !info.isReadable();
     });
-    setFiles(files);
+    setFilesPrivate(files);
 }
 
 void ImageRingList::setLiveMode(bool live)
@@ -474,7 +486,7 @@ void ImageRingList::toggleSlideshow(bool start)
     }
 }
 
-void ImageRingList::setFiles(const QStringList files, const QString &currentFile)
+void ImageRingList::setFilesPrivate(const QStringList files, const QString &currentFile)
 {
     m_loadPool->clear();
     m_thumbPool->clear();