wine-wine/dlls/gdi32/bidi.c

/*
 * GDI BiDirectional handling
 *
 * Copyright 2003 Shachar Shemesh
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "config.h"

#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "wine/debug.h"
#include "gdi_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(bidi);

/*************************************************************
 *    BIDI_Reorder
 */
BOOL BIDI_Reorder(
                LPCWSTR lpString,       /* [in] The string for which information is to be returned */
                INT uCount,     /* [in] Number of WCHARs in string. */
                DWORD dwFlags,  /* [in] GetCharacterPlacement compatible flags specifying how to process the string */
                DWORD dwWineGCP_Flags,       /* [in] Wine internal flags - Force paragraph direction */
                LPWSTR lpOutString, /* [out] Reordered string */
                INT uCountOut,  /* [in] Size of output buffer */
                UINT *lpOrder /* [out] Logical -> Visual order map */
    )
{
    unsigned i;
    TRACE("%s, %d, 0x%08x lpOutString=%p, lpOrder=%p\n",
          debugstr_wn(lpString, uCount), uCount, dwFlags,
          lpOutString, lpOrder);

    if (!(dwFlags & GCP_REORDER))
    {
        FIXME("Asked to reorder without reorder flag set\n");
        return FALSE;
    }
    memcpy(lpOutString, lpString, uCount * sizeof(WCHAR));
    if (lpOrder)
        for (i = 0; i < uCount; ++i)
            *(lpOrder++) = i;

    return TRUE;
}