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116 lines
3.5 KiB
C
116 lines
3.5 KiB
C
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/*
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* GDI BiDirectional handling
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*
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* Copyright 2003 Shachar Shemesh
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include <stdarg.h>
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#ifdef HAVE_UNICODE_UBIDI_H
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#include <unicode/ubidi.h>
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#endif
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "wine/debug.h"
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#include "gdi_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(bidi);
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#ifdef HAVE_ICU
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BOOL BidiAvail = TRUE;
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#else
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BOOL BidiAvail = FALSE;
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#endif
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/*************************************************************
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* BIDI_Reorder
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*/
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BOOL BIDI_Reorder(
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LPCWSTR lpString, /* [in] The string for which information is to be returned */
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INT uCount, /* [in] Number of WCHARs in string. */
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DWORD dwFlags, /* [in] GetCharacterPlacement compatible flags specifying how to process the string */
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DWORD dwWineGCP_Flags, /* [in] Wine internal flags - Force paragraph direction */
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LPWSTR lpOutString, /* [out] Reordered string */
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INT uCountOut, /* [in] Size of output buffer */
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UINT *lpOrder /* [out] Logical -> Visual order map */
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)
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{
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TRACE("%s, %d, 0x%08x lpOutString=%p, lpOrder=%p\n",
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debugstr_wn(lpString, uCount), uCount, dwFlags,
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lpOutString, lpOrder);
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#ifdef HAVE_ICU
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if ((dwFlags & GCP_REORDER) != 0) {
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UBiDi *bidi;
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UErrorCode err=0;
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UBiDiLevel level=0;
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bidi=ubidi_open();
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if( bidi==NULL ) {
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WARN("Failed to allocate structure\n");
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return FALSE;
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}
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switch( dwWineGCP_Flags&WINE_GCPW_DIR_MASK )
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{
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case WINE_GCPW_FORCE_LTR:
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level=0;
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break;
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case WINE_GCPW_FORCE_RTL:
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level=1;
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break;
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case WINE_GCPW_LOOSE_LTR:
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level=UBIDI_DEFAULT_LTR;
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break;
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case WINE_GCPW_LOOSE_RTL:
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level=UBIDI_DEFAULT_RTL;
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break;
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}
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ubidi_setPara( bidi, lpString, uCount, level, NULL, &err );
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if( lpOutString!=NULL ) {
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ubidi_writeReordered( bidi, lpOutString, uCount,
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(dwFlags&GCP_SYMSWAPOFF)?0:UBIDI_DO_MIRRORING, &err );
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}
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if( lpOrder!=NULL ) {
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ubidi_getLogicalMap( bidi, lpOrder, &err );
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}
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ubidi_close( bidi );
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if( U_FAILURE(err) ) {
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FIXME("ICU Library return error code %d.\n", err );
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FIXME("Please report this error to wine-devel@winehq.org so we can place "
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"descriptive Windows error codes here\n");
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SetLastError(ERROR_INVALID_LEVEL); /* This error is cryptic enough not to mean anything, I hope */
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return FALSE;
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}
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}
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return TRUE;
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#else /* HAVE_ICU */
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return FALSE;
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#endif /* HAVE_ICU */
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}
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