- fix: macos icon size overgrown (#106)

MacOS uses high DPI pixmaps with devicePixelRatio equals 2. Setting a
flag in QApplication can enforce this in pixmaps fetched from QIcons and
thus make the icons look high DPI.

RedPandaIDE/main.cpp

@@ -252,6 +252,10 @@ int main(int argc, char *argv[])
 //    qputenv("QT_AUTO_SCREEN_SCALE_FACTOR","false");
 //#endif
     QApplication app(argc, argv);
+#ifdef Q_OS_MACOS
+    // Fix macOS overgrown icon size issue
+    app.setAttribute(Qt::AA_UseHighDpiPixmaps);
+#endif
     QFile tempFile(QDir::tempPath()+QDir::separator()+"RedPandaDevCppStartUp.lock");
     {
         bool firstRun;