main: Linux - ask to create desktop entry on the first start

src/main/main.cpp

@@ -319,11 +319,6 @@ Verify update binary using 'shasum'-compatible (SHA256 algo) output signed by tw
         return 1;
     }
 
-    // Desktop entry
-#ifdef Q_OS_LINUX
-    registerXdgMime(app);
-#endif
-
     IPC *ipc = new IPC(&app);
     QStringList posArgs = parser.positionalArguments();
 

src/main/oshelper.cpp

@@ -46,11 +46,13 @@
 #endif
 #if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
 #include <X11/XKBlib.h>
+#undef Bool
 #undef KeyPress
 #undef KeyRelease
 #undef FocusIn
 #undef FocusOut
 // #undef those Xlib #defines that conflict with QEvent::Type enum
+#include "qt/utils.h"
 #endif
 
 #if defined(Q_OS_WIN)
@@ -85,6 +87,13 @@ OSHelper::OSHelper(QObject *parent) : QObject(parent)
 
 }
 
+void OSHelper::createDesktopEntry() const
+{
+#if defined(Q_OS_LINUX) && !defined(Q_OS_ANDROID)
+    registerXdgMime();
+#endif
+}
+
 QString OSHelper::downloadLocation() const
 {
     return QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);

src/main/oshelper.h

@@ -41,6 +41,7 @@ class OSHelper : public QObject
 public:
     explicit OSHelper(QObject *parent = 0);
 
+    Q_INVOKABLE void createDesktopEntry() const;
     Q_INVOKABLE QString downloadLocation() const;
     Q_INVOKABLE bool openContainingFolder(const QString &filePath) const;
     Q_INVOKABLE QString openSaveFileDialog(const QString &title, const QString &folder, const QString &filename) const;