Add StyleSheet automatic reload function

src/main.cpp

@@ -19,6 +19,7 @@
 #include "utilities/TouchScreenSignalSender.h"
 #include "keyboard/KeyboardManager.h"
 #include "appvals/AppGlobalValues.h"
+#include <QFileSystemWatcher>
 
 QString loadFontFromFile(QString path)
 {
@@ -75,6 +76,19 @@ int main(int argc, char* argv[])
     {
         a.setStyleSheet(QLatin1String(file.readAll()));
     }
+    #ifdef _DEBUG
+    QFileSystemWatcher fileWatcher;
+    fileWatcher.addPath("../src/stylesheet/Dark2.css");
+    QObject::connect(&fileWatcher, &QFileSystemWatcher::fileChanged, [](const QString &path){
+        QFile file(path);
+        if (file.open(QIODevice::ReadOnly))
+        {
+            qobject_cast<QApplication*>(QApplication::instance())->setStyleSheet(file.readAll());
+            file.close();
+            qDebug()<<"style updated!";
+        }
+    });
+    #endif
     AppGlobalValues::setDBconnected(false);
     MainWindow w;
     DialogManager::Default()->init(&w);