diff options
Diffstat (limited to 'unix/tkUnixKey.c')
| -rw-r--r-- | unix/tkUnixKey.c | 103 |
1 files changed, 89 insertions, 14 deletions
diff --git a/unix/tkUnixKey.c b/unix/tkUnixKey.c index 4d422cf..2fb8ebc 100644 --- a/unix/tkUnixKey.c +++ b/unix/tkUnixKey.c @@ -9,7 +9,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tkUnixKey.c,v 1.13 2008/03/26 19:04:10 jenglish Exp $ + * RCS: @(#) $Id: tkUnixKey.c,v 1.13.2.1 2008/06/11 00:41:25 jenglish Exp $ */ #include "tkInt.h" @@ -78,6 +78,48 @@ Tk_SetCaretPos( /* *---------------------------------------------------------------------- * + * TkpGetChar -- + * + * Convert a keyboard event to a UTF-8 string using XLookupString. + * + * This is used as a fallback instead of Xutf8LookupString + * or XmbLookupString if input methods are turned off + * and for KeyRelease events. + * + * Notes: + * XLookupString() normally returns a single ISO Latin 1 + * or ASCII control character. + * + *---------------------------------------------------------------------- + */ +static char * +TkpGetChar( + XEvent *eventPtr, /* KeyPress or KeyRelease event */ + Tcl_DString *dsPtr) /* Initialized, empty string to hold result. */ +{ + int len; + char buf[TCL_DSTRING_STATIC_SIZE]; + + len = XLookupString(&eventPtr->xkey, buf, TCL_DSTRING_STATIC_SIZE, 0, 0); + buf[len] = '\0'; + + if (len == 1) { + len = Tcl_UniCharToUtf((unsigned char)buf[0], Tcl_DStringValue(dsPtr)); + Tcl_DStringSetLength(dsPtr, len); + } else { + /* + * len > 1 should only happen if someone has called XRebindKeysym(). + * Assume UTF-8. + */ + Tcl_DStringSetLength(dsPtr, len); + strncpy(Tcl_DStringValue(dsPtr), buf, len); + } + return Tcl_DStringValue(dsPtr); +} + +/* + *---------------------------------------------------------------------- + * * TkpGetString -- * * Retrieve the UTF string associated with a keyboard event. @@ -95,11 +137,42 @@ Tk_SetCaretPos( char * TkpGetString( - TkWindow *winPtr, /* Window where event occurred: needed to get - * input context. */ + TkWindow *winPtr, /* Window where event occurred */ XEvent *eventPtr, /* X keyboard event. */ - Tcl_DString *dsPtr) /* Uninitialized or empty string to hold - * result. */ + Tcl_DString *dsPtr) /* Initialized, empty string to hold result. */ +#ifdef TK_USE_INPUT_METHODS +#if X_HAVE_UTF8_STRING +{ + if ((winPtr->dispPtr->flags & TK_DISPLAY_USE_IM) + && (winPtr->inputContext != NULL) + && (eventPtr->type == KeyPress)) + { + int len; + Status status; + + Tcl_DStringSetLength(dsPtr, TCL_DSTRING_STATIC_SIZE-1); + len = Xutf8LookupString(winPtr->inputContext, &eventPtr->xkey, + Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr), + NULL, &status); + + if (status == XBufferOverflow) { /* Expand buffer and try again */ + Tcl_DStringSetLength(dsPtr, len); + len = Xutf8LookupString(winPtr->inputContext, &eventPtr->xkey, + Tcl_DStringValue(dsPtr), Tcl_DStringLength(dsPtr), + NULL, &status); + } + if ((status != XLookupChars) && (status != XLookupBoth)) { + Tcl_DStringSetLength(dsPtr, 0); + len = 0; + } + Tcl_DStringSetLength(dsPtr, len); + + return Tcl_DStringValue(dsPtr); + } else { + return TkpGetChar(eventPtr, dsPtr); + } +} +#else /* !X_HAVE_UTF8_STRING */ { int len; Tcl_DString buf; @@ -112,7 +185,6 @@ TkpGetString( Tcl_DStringInit(&buf); Tcl_DStringSetLength(&buf, TCL_DSTRING_STATIC_SIZE-1); -#ifdef TK_USE_INPUT_METHODS if ((winPtr->dispPtr->flags & TK_DISPLAY_USE_IM) && (winPtr->inputContext != NULL) && (eventPtr->type == KeyPress)) { @@ -120,6 +192,7 @@ TkpGetString( len = XmbLookupString(winPtr->inputContext, &eventPtr->xkey, Tcl_DStringValue(&buf), Tcl_DStringLength(&buf), NULL, &status); + /* * If the buffer wasn't big enough, grow the buffer and try again. */ @@ -132,22 +205,24 @@ TkpGetString( if ((status != XLookupChars) && (status != XLookupBoth)) { len = 0; } - } else { - len = XLookupString(&eventPtr->xkey, Tcl_DStringValue(&buf), - Tcl_DStringLength(&buf), NULL, NULL); + return TkpGetChar(eventPtr, dsPtr); } -#else /* TK_USE_INPUT_METHODS */ - len = XLookupString(&eventPtr->xkey, Tcl_DStringValue(&buf), - Tcl_DStringLength(&buf), NULL, NULL); -#endif /* TK_USE_INPUT_METHODS */ - Tcl_DStringSetLength(&buf, len); + Tcl_DStringSetLength(&buf, len); Tcl_ExternalToUtfDString(NULL, Tcl_DStringValue(&buf), len, dsPtr); Tcl_DStringFree(&buf); return Tcl_DStringValue(dsPtr); } + +#endif /* X_HAVE_UTF8_STRING */ +#else /* !TK_USE_INPUT_METHODS */ +{ + return TkpGetChar(eventPtr, dsPtr); +} +#endif + /* * When mapping from a keysym to a keycode, need information about the |