diff options
| -rw-r--r-- | nx-X11/lib/X11/imLcFlt.c | 52 |
1 files changed, 42 insertions, 10 deletions
diff --git a/nx-X11/lib/X11/imLcFlt.c b/nx-X11/lib/X11/imLcFlt.c index e4ab3815c..50f4c252a 100644 --- a/nx-X11/lib/X11/imLcFlt.c +++ b/nx-X11/lib/X11/imLcFlt.c @@ -43,18 +43,17 @@ _XimLocalFilter(Display *d, Window w, XEvent *ev, XPointer client_data) Xic ic = (Xic)client_data; KeySym keysym; static char buf[256]; + static unsigned prevcode = 0, prevstate = 0; + unsigned currstate; DefTree *b = ic->private.local.base.tree; DTIndex t; - Bool braille = False; + Bool braille = False, anymodifier = False; if(ev->xkey.keycode == 0) return (False); XLookupString((XKeyEvent *)ev, buf, sizeof(buf), &keysym, NULL); - if(IsModifierKey(keysym)) - return (False); - if(keysym >= XK_braille_dot_1 && keysym <= XK_braille_dot_8) { if(ev->type == KeyPress) { ic->private.local.brl_pressed |= @@ -78,38 +77,71 @@ _XimLocalFilter(Display *d, Window w, XEvent *ev, XPointer client_data) } } - if( (ev->type != KeyPress) - || (((Xim)ic->core.im)->private.local.top == 0 ) ) + if(((Xim)ic->core.im)->private.local.top == 0 ) goto emit_braille; + currstate = ev->xkey.state; + if(ev->type == KeyPress) { + prevcode = ev->xkey.keycode; + prevstate = currstate; + + if(IsModifierKey(keysym)) + return(False); + prevcode = 0; + } else { + if(prevcode != ev->xkey.keycode) + return False; + + /* For lookup, we use the state at the time when the key was pressed, */ + /* because this state was not affected by the modifier that is mapped */ + /* to the key. */ + ev->xkey.state = prevstate; + XLookupString((XKeyEvent *)ev, buf, sizeof(buf), &keysym, NULL); + } + for(t = ic->private.local.context; t; t = b[t].next) { + if(IsModifierKey(b[t].keysym)) + anymodifier = True; if(((ev->xkey.state & b[t].modifier_mask) == b[t].modifier) && (keysym == b[t].keysym)) break; } + /* Restore the state */ + ev->xkey.state = currstate; + if(t) { /* Matched */ if(b[t].succession) { /* Intermediate */ ic->private.local.context = b[t].succession; - return(True); + return (ev->type == KeyPress); } else { /* Terminate (reached to leaf) */ ic->private.local.composed = t; ic->private.local.brl_committed = 0; /* return back to client KeyPressEvent keycode == 0 */ ev->xkey.keycode = 0; + ev->xkey.type = KeyPress; XPutBackEvent(d, ev); + if(prevcode){ + /* For modifier key releases, restore the event, as we do not */ + /* filter it. */ + ev->xkey.type = KeyRelease; + ev->xkey.keycode = prevcode; + } /* initialize internal state for next key sequence */ ic->private.local.context = ((Xim)ic->core.im)->private.local.top; - return(True); + return (ev->type == KeyPress); } } else { /* Unmatched */ - if(ic->private.local.context == ((Xim)ic->core.im)->private.local.top) { + /* Unmatched modifier key releases abort matching only in the case that */ + /* there was any modifier that would have matched */ + if((ic->private.local.context == ((Xim)ic->core.im)->private.local.top) || + (ev->type == KeyRelease && !anymodifier)) { goto emit_braille; } /* Error (Sequence Unmatch occured) */ /* initialize internal state for next key sequence */ ic->private.local.context = ((Xim)ic->core.im)->private.local.top; - return(True); + return (ev->type == KeyPress); } emit_braille: |