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Diffstat (limited to 'vcl/unx/source/app/i18n_im.cxx')
| -rw-r--r-- | vcl/unx/source/app/i18n_im.cxx | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/vcl/unx/source/app/i18n_im.cxx b/vcl/unx/source/app/i18n_im.cxx new file mode 100644 index 000000000000..04c1f9b24ca2 --- /dev/null +++ b/vcl/unx/source/app/i18n_im.cxx @@ -0,0 +1,332 @@ +/************************************************************************* + * + * $RCSfile: i18n_im.cxx,v $ + * + * $Revision: 1.1.1.1 $ + * + * last change: $Author: hr $ $Date: 2000-09-18 17:05:42 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (the "License"); You may not use this file + * except in compliance with the License. You may obtain a copy of the + * License at http://www.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#include <stdio.h> + +#include <prex.h> +#include <X11/Xlocale.h> +#include <X11/Xlib.h> +#include <XIM.h> +#include <postx.h> + +#include <salunx.h> + +#ifndef _SAL_I18N_INPUTMETHOD_HXX +#include "i18n_im.hxx" +#endif + +// ------------------------------------------------------------------------- +// +// locale handling +// +// ------------------------------------------------------------------------- + +// Locale handling of the operating system layer + +static char* +SetSystemLocale( const char* p_inlocale ) +{ + char *p_outlocale; + if ( (p_outlocale = setlocale(LC_ALL, p_inlocale)) == NULL ) + { + fprintf( stderr, + "I18N: Operating system doesn't support locale \"%s\"\n", + p_inlocale ); + } + + return p_outlocale; +} + +static Bool +IsPosixLocale( const char* p_locale ) +{ + if ( p_locale == NULL ) + return False; + if ( (p_locale[ 0 ] == 'C') && (p_locale[ 1 ] == '\0') ) + return True; + if ( strncmp(p_locale, "POSIX", sizeof("POSIX")) == 0 ) + return True; + + return False; +} + +// Locale handling of the X Window System layer + +static Bool +IsXWindowCompatibleLocale( const char* p_locale ) +{ + if ( p_locale == NULL ) + return False; + + if ( !XSupportsLocale() ) + { + if ( p_locale != NULL ) + fprintf (stderr, + "I18N: X Window System doesn't support locale \"%s\"\n", + p_locale ); + return False; + } + return True; +} + +// Locale setting for the Input Method +// allways provide a fallback, even if it means falling back to the +// portable POSIX "C" locale + +Bool +SalI18N_InputMethod::SetLocale( const char* pLocale ) +{ + // check whether we want an Input Method engine, if we don't we + // do not need to set the locale + if ( mbUseable ) + { + char *locale; + + // check whether the operating system supports the LANG + if ( (locale = SetSystemLocale( pLocale )) == NULL ) + { + if ( (locale = SetSystemLocale( "C" )) == NULL ) + mbUseable = False; + } + + // check whether the XWindow system supports the LANG + if ( !IsXWindowCompatibleLocale(locale) ) + { + if ( !IsPosixLocale(locale) ) + { + locale = SetSystemLocale( "C" ); + if ( !IsXWindowCompatibleLocale(locale) ) + mbUseable = False; + } + else + { + mbUseable = False; + } + } + + // must not fail if mbUseable since XSupportsLocale() asserts success + if ( mbUseable && XSetLocaleModifiers("") == NULL ) + { + fprintf (stderr, "I18N: Can't set X modifiers for locale \"%s\"\n", + locale); + mbUseable = False; + } + } + + return mbUseable; +} + +// ------------------------------------------------------------------------ +// +// Constructor / Destructor / Initialisation +// +// ------------------------------------------------------------------------ + +SalI18N_InputMethod::SalI18N_InputMethod( ) : maMethod( (XIM)NULL ), + mpStyles( (XIMStyles*)NULL ), + mbUseable( bUseInputMethodDefault ), + mbMultiLingual( False ) +{ + const char *pUseInputMethod = getenv( "SAL_USEINPUTMETHOD" ); + if ( pUseInputMethod != NULL ) + mbUseable = pUseInputMethod[0] != '\0' ; +} + +SalI18N_InputMethod::~SalI18N_InputMethod() +{ + if ( mpStyles != NULL ) + XFree( mpStyles ); + if ( maMethod != NULL ) + XCloseIM ( maMethod ); +} + +// +// XXX +// debug routine: lets have a look at the provided method styles +// + +#ifdef DEBUG + +extern "C" char* +GetMethodName( XIMStyle nStyle, char *pBuf, int nBufSize) +{ + struct StyleName { + const XIMStyle nStyle; + const char *pName; + const int nNameLen; + }; + + StyleName *pDescPtr; + static const StyleName pDescription[] = { + { XIMPreeditArea, "PreeditArea ", sizeof("PreeditArea ") }, + { XIMPreeditCallbacks, "PreeditCallbacks ",sizeof("PreeditCallbacks ")}, + { XIMPreeditPosition, "PreeditPosition ", sizeof("PreeditPosition ") }, + { XIMPreeditNothing, "PreeditNothing ", sizeof("PreeditNothing ") }, + { XIMPreeditNone, "PreeditNone ", sizeof("PreeditNone ") }, + { XIMStatusArea, "StatusArea ", sizeof("StatusArea ") }, + { XIMStatusCallbacks, "StatusCallbacks ", sizeof("StatusCallbacks ") }, + { XIMStatusNothing, "StatusNothing ", sizeof("StatusNothing ") }, + { XIMStatusNone, "StatusNone ", sizeof("StatusNone ") }, + { 0, "NULL", 0 } + }; + + if ( nBufSize > 0 ) + pBuf[0] = '\0'; + + char *pBufPtr = pBuf; + for ( pDescPtr = const_cast<StyleName*>(pDescription); pDescPtr->nStyle != 0; pDescPtr++ ) + { + int nSize = pDescPtr->nNameLen - 1; + if ( (nStyle & pDescPtr->nStyle) && (nBufSize > nSize) ) + { + strncpy( pBufPtr, pDescPtr->pName, nSize + 1); + pBufPtr += nSize; + nBufSize -= nSize; + } + } + + return pBuf; +} + +extern "C" void +PrintInputStyle( XIMStyles *pStyle ) +{ + char pBuf[ 128 ]; + int nBuf = sizeof( pBuf ); + + if ( pStyle == NULL ) + fprintf( stderr, "no input method styles\n"); + else + for ( int nStyle = 0; nStyle < pStyle->count_styles; nStyle++ ) + { + fprintf( stderr, "style #%i = %s\n", nStyle, + GetMethodName(pStyle->supported_styles[nStyle], pBuf, nBuf) ); + } +} + +#endif + +// +// this is the real constructing routine, since locale setting has to be done +// prior to xopendisplay, the xopenim call has to be delayed +// + +Bool +SalI18N_InputMethod::CreateMethod ( Display *pDisplay ) +{ + if ( mbUseable ) + { + if ( getenv("USE_XOPENIM") == NULL ) + { + mbMultiLingual = True; // set ml-input flag to create input-method + maMethod = XvaOpenIM(pDisplay, NULL, NULL, NULL, + XNMultiLingualInput, mbMultiLingual, /* dummy */ + 0); + // get ml-input flag from input-method + if ( maMethod == (XIM)NULL ) + mbMultiLingual = False; + else + if ( XGetIMValues(maMethod, + XNMultiLingualInput, &mbMultiLingual, NULL ) != NULL ) + mbMultiLingual = False; + } + else + { + maMethod = XOpenIM(pDisplay, NULL, NULL, NULL); + mbMultiLingual = False; + } + + if ( maMethod != (XIM)NULL ) + { + if ( XGetIMValues(maMethod, XNQueryInputStyle, &mpStyles, NULL) + != NULL) + mbUseable = False; + #ifdef DEBUG + fprintf(stderr, "Creating %s-Lingual InputMethod\n", + mbMultiLingual ? "Multi" : "Mono" ); + PrintInputStyle( mpStyles ); + #endif + } + else + { + mbUseable = False; + } + } + + #ifdef DEBUG + if ( !mbUseable ) + fprintf(stderr, "input method creation failed\n"); + #endif + + return mbUseable; +} + +// +// give IM the opportunity to look at the event, and possibly hide it +// + +Bool +SalI18N_InputMethod::FilterEvent( XEvent *pEvent ) +{ + return mbUseable && (Bool)XFilterEvent( pEvent, None ); +} + + |