merge from remote

server/internal/xorg/xorg.c

@@ -170,5 +170,26 @@ void SetKeyboardLayout(char *layout) {
   // TOOD: refactor, use native API.
   char cmd[13] = "setxkbmap ";
   strncat(cmd, layout, 2);
-  system(cmd);
+  int r = system(cmd);
+}
+
+void SetKeyboardModifiers(int num_lock, int caps_lock, int scroll_lock) {
+  Display *display = getXDisplay();
+
+  if (num_lock != -1) {
+    XkbLockModifiers(display, XkbUseCoreKbd, 16, num_lock * 16);
+  }
+
+  if (caps_lock != -1) {
+    XkbLockModifiers(display, XkbUseCoreKbd, 2, caps_lock * 2);
+  }
+
+  if (scroll_lock != -1) {
+    XKeyboardControl values;
+    values.led_mode = scroll_lock ? LedModeOn : LedModeOff;
+    values.led = 3;
+    XChangeKeyboardControl(display, KBLedMode, &values);
+  }
+
+  XFlush(display);
 }

server/internal/xorg/xorg.go

@@ -225,6 +225,13 @@ func SetKeyboardLayout(layout string) {
 	C.SetKeyboardLayout(layoutUnsafe)
 }
 
+func SetKeyboardModifiers(num_lock int, caps_lock int, scroll_lock int) {
+	mu.Lock()
+	defer mu.Unlock()
+
+	C.SetKeyboardModifiers(C.int(num_lock), C.int(caps_lock), C.int(scroll_lock))
+}
+
 //export goCreateScreenSize
 func goCreateScreenSize(index C.int, width C.int, height C.int, mwidth C.int, mheight C.int) {
 	ScreenConfigurations[int(index)] = types.ScreenConfiguration{

server/internal/xorg/xorg.h

@@ -4,6 +4,7 @@
   #define XDISPLAY_H
 
   #include <X11/Xlib.h>
+  #include <X11/XKBlib.h>
   #include <X11/extensions/Xrandr.h>
   #include <X11/extensions/XTest.h>
   #include <libclipboard.h>
@@ -40,5 +41,6 @@
   void XDisplaySet(char *input);
 
   void SetKeyboardLayout(char *layout);
+  void SetKeyboardModifiers(int num_lock, int caps_lock, int scroll_lock);
 #endif