efl - ecore c+ ecore-imf - fix odd case input when faking a real event

so ibus module for ecore-imf likes to send an x event back to
ourselves faking a key... this works unless we are looking at
modifiers that make make for odd combos with keysyms turned into
keycodes. so actualyl use the correct original keycode plus state
unless we are having to explicitly send a keysym from ibus core.

this fixes T3703

@fix

src/lib/ecore_x/xlib/ecore_x_events.c

@@ -347,14 +347,15 @@ _ecore_key_press(int event,
    char *key;
    char keyname_buffer[256];
    char compose_buffer[256];
-   KeySym sym;
+   KeySym sym, sym2 = 0;
    XComposeStatus status;
    int val;
    int key_len, keyname_len, compose_len;
 
    _ecore_x_last_event_mouse_move = 0;
-   keyname = XKeysymToString(_ecore_x_XKeycodeToKeysym(xevent->display,
+   sym = _ecore_x_XKeycodeToKeysym(xevent->display, xevent->keycode, 0);
-                                                       xevent->keycode, 0));
+   keyname = XKeysymToString(sym);
+
    if (!keyname)
      {
         snprintf(keyname_buffer,
@@ -364,13 +365,12 @@ _ecore_key_press(int event,
         keyname = keyname_buffer;
      }
 
-   sym = 0;
    key = NULL;
    compose = NULL;
    val = XLookupString(xevent,
                        compose_buffer,
                        sizeof(compose_buffer),
-                       &sym,
+                       &sym2,
                        &status);
    if (val > 0)
      {
@@ -381,6 +381,7 @@ _ecore_key_press(int event,
           ERR("Ecore_X cannot convert input key string '%s' to UTF-8. "
               "Is Eina built with iconv support?", compose_buffer);
         tmp = compose;
+        sym = sym2;
      }
 
    key = XKeysymToString(sym);

src/modules/ecore_imf/ibus/ibus_imcontext.c

@@ -48,6 +48,7 @@ typedef struct _KeyEvent KeyEvent;
 struct _KeyEvent
 {
    int keysym;
+   int keycode;
    int state;
 };
 
@@ -64,6 +65,7 @@ static void _ecore_imf_context_ibus_bus_connected_cb(IBusBus *bus, IBusIMContext
 static XKeyEvent _ecore_imf_ibus_x_key_event_generate(Window win,
                                                       Eina_Bool press,
                                                       int keysym,
+                                                      int keycode,
                                                       int modifiers);
 
 static unsigned int
@@ -163,7 +165,7 @@ _ecore_imf_locks_to_ibus_modifier(unsigned int locks)
 }
 
 static void
-_ecore_imf_ibus_key_event_put(int keysym, int state)
+_ecore_imf_ibus_key_event_put(int keysym, int keycode, int state)
 {
    // Find the window which has the current keyboard focus.
    Window winFocus = 0;
@@ -177,6 +179,7 @@ _ecore_imf_ibus_key_event_put(int keysym, int state)
         event = _ecore_imf_ibus_x_key_event_generate(winFocus,
                                                      EINA_FALSE,
                                                      keysym,
+                                                     keycode,
                                                      state);
         XSendEvent(event.display, event.window, True, KeyReleaseMask, (XEvent *)&event);
      }
@@ -185,16 +188,18 @@ _ecore_imf_ibus_key_event_put(int keysym, int state)
         event = _ecore_imf_ibus_x_key_event_generate(winFocus,
                                                      EINA_TRUE,
                                                      keysym,
+                                                     keycode,
                                                      state);
         XSendEvent(event.display, event.window, True, KeyPressMask, (XEvent *)&event);
      }
 }
 
 static KeyEvent *
-_ecore_imf_ibus_key_event_copy(int keysym, int state)
+_ecore_imf_ibus_key_event_copy(int keysym, int keycode, int state)
 {
    KeyEvent *kev = calloc(1, sizeof(KeyEvent));
    kev->keysym = keysym;
+   kev->keycode = keycode;
    kev->state = state;
 
    return kev;
@@ -221,7 +226,9 @@ _ecore_imf_ibus_process_key_event_done(GObject      *object,
 
    if (retval == EINA_FALSE)
      {
-        _ecore_imf_ibus_key_event_put(event->keysym, event->state);
+        _ecore_imf_ibus_key_event_put(event->keysym,
+                                      event->keycode,
+                                      event->state);
      }
    free(event);
 }
@@ -394,7 +401,7 @@ ecore_imf_context_ibus_filter_event(Ecore_IMF_Context *ctx,
              if (ev->timestamp == 0)
                return EINA_FALSE;
 
-             keycode = ecore_x_keysym_keycode_get(ev->key);
+             keycode = ecore_x_keysym_keycode_get(ev->keyname);
              keysym = XStringToKeysym(ev->key);
              state = _ecore_imf_modifier_to_ibus_modifier(ev->modifiers) |
                      _ecore_imf_locks_to_ibus_modifier(ev->locks) | IBUS_RELEASE_MASK;
@@ -415,7 +422,7 @@ ecore_imf_context_ibus_filter_event(Ecore_IMF_Context *ctx,
                                                              -1,
                                                              NULL,
                                                              _ecore_imf_ibus_process_key_event_done,
-                                                             _ecore_imf_ibus_key_event_copy(keysym, state));
+                                                             _ecore_imf_ibus_key_event_copy(keysym, keycode, state));
                   retval = EINA_TRUE;
                }
           }
@@ -427,7 +434,7 @@ ecore_imf_context_ibus_filter_event(Ecore_IMF_Context *ctx,
 
              _request_surrounding_text(ibusimcontext);
 
-             keycode = ecore_x_keysym_keycode_get(ev->key);
+             keycode = ecore_x_keysym_keycode_get(ev->keyname);
              keysym = XStringToKeysym(ev->key);
              state = _ecore_imf_modifier_to_ibus_modifier(ev->modifiers) |
                      _ecore_imf_locks_to_ibus_modifier(ev->locks);
@@ -448,7 +455,7 @@ ecore_imf_context_ibus_filter_event(Ecore_IMF_Context *ctx,
                                                              -1,
                                                              NULL,
                                                              _ecore_imf_ibus_process_key_event_done,
-                                                             _ecore_imf_ibus_key_event_copy(keysym, state));
+                                                             _ecore_imf_ibus_key_event_copy(keysym, keycode, state));
                   retval = EINA_TRUE;
                }
           }
@@ -716,6 +723,7 @@ _ecore_imf_context_ibus_commit_text_cb(IBusInputContext *ibuscontext EINA_UNUSED
 static XKeyEvent _ecore_imf_ibus_x_key_event_generate(Window win,
                                                       Eina_Bool press,
                                                       int keysym,
+                                                      int keycode,
                                                       int modifiers)
 {
    XKeyEvent event;
@@ -731,8 +739,16 @@ static XKeyEvent _ecore_imf_ibus_x_key_event_generate(Window win,
    event.x_root      = 1;
    event.y_root      = 1;
    event.same_screen = EINA_TRUE;
-   event.state       = modifiers;
+   if (keycode == -1)
-   event.keycode     = XKeysymToKeycode(display, keysym);
+     {
+        event.keycode     = XKeysymToKeycode(display, keysym);
+        event.state       = 0;
+     }
+   else
+     {
+        event.keycode     = keycode;
+        event.state       = modifiers;
+     }
    if (press)
      event.type = KeyPress;
    else
@@ -751,7 +767,7 @@ _ecore_imf_context_ibus_forward_key_event_cb(IBusInputContext  *ibuscontext EINA
 {
    EINA_LOG_DBG("keyval : %d, state : %d", keyval, state);
 
-   _ecore_imf_ibus_key_event_put(keyval, state);
+   _ecore_imf_ibus_key_event_put(keyval, -1, state);
 }
 
 static void