/*
 * True Type font engine support
 *
 * Copyright 1996 John Harvey
 * Copyright 1998 David Lee Lambert
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "winbase.h"
#include "wine/wingdi16.h"
#include "wine/debug.h"

WINE_DEFAULT_DEBUG_CHANNEL(font);

/***********************************************************************
 *		EngineEnumerateFont (GDI.300)
 */
WORD WINAPI
EngineEnumerateFont16(LPSTR fontname, FARPROC16 proc, DWORD data )
{
    FIXME("(%s,%p,%lx),stub\n",fontname,proc,data);
    return 0;
}

/***********************************************************************
 *		EngineDeleteFont (GDI.301)
 */
WORD WINAPI EngineDeleteFont16(LPFONTINFO16 lpFontInfo)
{
    WORD handle;

    /*	untested, don't know if it works.
	We seem to access some structure that is located after the
	FONTINFO. The FONTINFO documentation says that there may
	follow some char-width table or font bitmap or vector info.
	I think it is some kind of font bitmap that begins at offset 0x52,
	as FONTINFO goes up to 0x51.
	If this is correct, everything should be implemented correctly.
    */
    if ( ((lpFontInfo->dfType & (RASTER_FONTTYPE|DEVICE_FONTTYPE))
      == (RASTER_FONTTYPE|DEVICE_FONTTYPE))
	&& (LOWORD(lpFontInfo->dfFace) == LOWORD(lpFontInfo)+0x6e)
	&& (handle = *(WORD *)(lpFontInfo+0x54)) )
    {
	*(WORD *)(lpFontInfo+0x54) = 0;
	GlobalFree16(handle);
    }
    return 1;
}

/***********************************************************************
 *		EngineRealizeFont (GDI.302)
 */
WORD WINAPI EngineRealizeFont16(LPLOGFONT16 lplogFont, LPTEXTXFORM16 lptextxform, LPFONTINFO16 lpfontInfo)
{
    FIXME("(%p,%p,%p),stub\n",lplogFont,lptextxform,lpfontInfo);

    return 0;
}

/***********************************************************************
 *		EngineRealizeFontExt (GDI.315)
 */
WORD WINAPI EngineRealizeFontExt16(LONG l1, LONG l2, LONG l3, LONG l4)
{
    FIXME("(%08lx,%08lx,%08lx,%08lx),stub\n",l1,l2,l3,l4);

    return 0;
}

/***********************************************************************
 *		EngineGetCharWidth (GDI.303)
 */
WORD WINAPI EngineGetCharWidth16(LPFONTINFO16 lpFontInfo, BYTE firstChar, BYTE lastChar, LPINT16 buffer)
{
    int i;

    for (i = firstChar; i <= lastChar; i++)
       FIXME(" returns font's average width for range %d to %d\n", firstChar, lastChar);
	*buffer++ = lpFontInfo->dfAvgWidth; /* insert some charwidth functionality here; use average width for now */
    return 1;
}

/***********************************************************************
 *		EngineSetFontContext (GDI.304)
 */
WORD WINAPI EngineSetFontContext(LPFONTINFO16 lpFontInfo, WORD data)
{
   FIXME("stub?\n");
	return 0;
}

/***********************************************************************
 *		EngineGetGlyphBMP (GDI.305)
 */
WORD WINAPI EngineGetGlyphBMP(WORD word, LPFONTINFO16 lpFontInfo, WORD w1, WORD w2, LPSTR string, DWORD dword, /*LPBITMAPMETRICS16*/ LPVOID metrics)
{
   FIXME("stub?\n");
    return 0;
}

/***********************************************************************
 *		EngineMakeFontDir (GDI.306)
 */
DWORD WINAPI EngineMakeFontDir(HDC16 hdc, LPFONTDIR16 fontdir, LPCSTR string)
{
   FIXME(" stub! (always fails)\n");
    return -1; /* error */

}