#include "xlib.h"
#include "scheme48.h"

//#ifdef XLIB_RELEASE_5_OR_LATER
// I don't know if XDisplayKeycodes() was already there in X11R4.
// else: dpy->min_keycode dpy->max_keycode

s48_value scx_Display_Min_Keycode (s48_value d) {
  int mink, maxk;
  XDisplayKeycodes(SCX_EXTRACT_DISPLAY(d), &mink, &maxk);
  return s48_enter_integer(mink);
}

s48_value scx_Display_Max_Keycode (s48_value d) {
  int mink, maxk;
  XDisplayKeycodes(SCX_EXTRACT_DISPLAY(d), &mink, &maxk);
  return s48_enter_integer(maxk);
}

//#ifdef XLIB_RELEASE_5_OR_LATER
// I'm not sure if this works correctly in X11R4:

s48_value scx_Display_Keysyms_Per_Keycode (s48_value d) {
  KeySym *ksyms;
  int mink, maxk, ksyms_per_kode;

  XDisplayKeycodes(SCX_EXTRACT_DISPLAY(d), &mink, &maxk);
  ksyms = XGetKeyboardMapping(SCX_EXTRACT_DISPLAY(d), (KeyCode)mink,
			      maxk - mink + 1, &ksyms_per_kode);
  return s48_enter_integer(ksyms_per_kode);
}

//#else
//static s48_value P_Display_Keysyms_Per_Keycode (d) s48_value d; {
//    Check_Type (d, T_Display);
//    // Force initialization: 
//    Disable_Interrupts;
//    (void)XKeycodeToKeysym (DISPLAY(d)->dpy, DISPLAY(d)->dpy->min_keycode, 0);
//    Enable_Interrupts;
//    return s48_enter_integer (DISPLAY(d)->dpy->keysyms_per_keycode);
//}
//#endif

s48_value scx_String_To_Keysym (s48_value s) {
  KeySym k = XStringToKeysym (s48_extract_string(s));
  return k == NoSymbol ? S48_FALSE : s48_enter_integer ((unsigned long)k);
}

s48_value scx_Keysym_To_String (s48_value k) {
  char* s = XKeysymToString ((KeySym)s48_extract_integer(k));
  return s ? s48_enter_string(s) : S48_FALSE;
}

s48_value scx_Keycode_To_Keysym (s48_value d, s48_value k, s48_value index) {
  KeySym ks;
  //Disable_Interrupts;
  ks = XKeycodeToKeysym(SCX_EXTRACT_DISPLAY(d),
			(int)s48_extract_integer (k), 
			(int)s48_extract_integer (index));
  //Enable_Interrupts;
  return s48_enter_integer((unsigned long)ks);
}

s48_value scx_Keysym_To_Keycode (s48_value d, s48_value k) {
  KeyCode kc;
  //Disable_Interrupts;
  kc = XKeysymToKeycode (SCX_EXTRACT_DISPLAY(d),
			 (KeySym)s48_extract_integer(k));
  //Enable_Interrupts;
  return s48_enter_integer(kc);
}

s48_value scx_Lookup_String (s48_value d, s48_value k, s48_value mask) {
  XKeyEvent e;
  char buf[1024];
  int len;
  KeySym keysym_return;
  XComposeStatus status_return;

  e.display = SCX_EXTRACT_DISPLAY(d);
  e.keycode = (int)s48_extract_integer(k);
  e.state = Symbols_To_Bits(mask, State_Syms);
  //Disable_Interrupts;
  len = XLookupString (&e, buf, 1024, &keysym_return, &status_return);
  //Enable_Interrupts;
  return s48_enter_string(buf); //is there a 0 at buf[len] ?
}

s48_value scx_Rebind_Keysym (s48_value d, s48_value k, s48_value mods, 
			     s48_value str) {
  int i, n = S48_VECTOR_LENGTH(mods);
  KeySym p[n];

  for (i = 0; i < n; i++)
    p[i] = (KeySym)s48_extract_integer(S48_VECTOR_REF(mods, i));
  XRebindKeysym (SCX_EXTRACT_DISPLAY(d), 
		 (KeySym)s48_extract_integer (k), p, n, 
		 (unsigned char *)s48_extract_string(str),
		 S48_STRING_LENGTH(str));
  return S48_UNSPECIFIC;
}

s48_value scx_Refresh_Keyboard_Mapping (s48_value d, s48_value w, 
					s48_value event) {
  static XMappingEvent fake;

  fake.type = MappingNotify;
  fake.display = SCX_EXTRACT_DISPLAY(d);
  fake.window = SCX_EXTRACT_WINDOW(w);
  fake.request = Symbol_To_Bit (event, Mapping_Syms);
  XRefreshKeyboardMapping (&fake);
  return S48_UNSPECIFIC;
}

scx_init_key () {
  S48_EXPORT_FUNCTION(scx_Display_Min_Keycode);
  S48_EXPORT_FUNCTION(scx_Display_Max_Keycode);
  S48_EXPORT_FUNCTION(scx_Display_Keysyms_Per_Keycode);
  S48_EXPORT_FUNCTION(scx_String_To_Keysym);
  S48_EXPORT_FUNCTION(scx_Keysym_To_String);
  S48_EXPORT_FUNCTION(scx_Keycode_To_Keysym);
  S48_EXPORT_FUNCTION(scx_Keysym_To_Keycode);
  S48_EXPORT_FUNCTION(scx_Lookup_String);
  S48_EXPORT_FUNCTION(scx_Rebind_Keysym);
  S48_EXPORT_FUNCTION(scx_Refresh_Keyboard_Mapping);
}