/* $XConsortium: pexFont.c,v 5.6 92/12/01 17:18:00 hersh Exp $ */

/***********************************************************
Copyright 1989, 1990, 1991 by Sun Microsystems, Inc. and the X Consortium.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the names of Sun Microsystems,
the X Consortium, and MIT not be used in advertising or publicity 
pertaining to distribution of the software without specific, written 
prior permission.  

SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT 
SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/


/*++    pexFont.c
 *		PEXOpenFont
 *		PEXCloseFont
 *		PEXQueryFont
 *		PEXListFonts
 *		PEXListFontsWithInfo
 *		PEXQueryTextExtents
 --*/

#include "X.h"
#include "Xproto.h"
#include "pexError.h"
#include "dipex.h"
#include "pexLookup.h"

#ifndef X_NOT_POSIX
#ifdef _POSIX_SOURCE
#include <limits.h>
#else
#define _POSIX_SOURCE
#include <limits.h>
#undef _POSIX_SOURCE
#endif
#endif /* X_NOT_POSIX */
#ifndef PATH_MAX
#include <sys/param.h>
#ifndef PATH_MAX
#ifdef MAXPATHLEN
#define PATH_MAX MAXPATHLEN
#else
#define PATH_MAX 1024
#endif
#endif
#endif /* PATH_MAX */

#ifdef min
#undef min
#endif
 
#ifdef max
#undef max
#endif

static dipexFont *FindPEXFontEntry();

/*++	PEXOpenFont
 *
 * DESCRIPTION:
 *
 * This request loads the specified PEX font, if necessary, and associates
 * identifier f_id with it. The font name should use the ISO Latin-1 encoding,
 * and upper/lower case does not matter.  PEXfonts are not associated with a
 * particular screen, and can be used with any renderer or PHIGS workstation
 * resources. 
 --*/
ErrorCode
PEXOpenFont (cntxtPtr, strmPtr)
pexContext      *cntxtPtr;
pexOpenFontReq  *strmPtr;
{
    ErrorCode err = Success;
    ErrorCode FreePEXFont ();
    unsigned char fName[PATH_MAX];
    dipexFont *dif;
    extern void CopyISOLatin1Lowered();

    /* oh, who cares if it's already been opened under this id */
	if (!LegalNewID(strmPtr->font,  cntxtPtr->client)) 
	    PEX_ERR_EXIT(BadIDChoice,strmPtr->font,cntxtPtr);

	/* has this server already loaded this font */
	CopyISOLatin1Lowered(	fName, (unsigned char *)(strmPtr+1),
				(int)(strmPtr->numBytes));

	dif = FindPEXFontEntry(fName);

	if (dif) {
	    if (dif->refcnt > 0) {
		dif->refcnt += 1; }
	} else {

	    dif = (dipexFont *) Xalloc ((unsigned long)sizeof(dipexFont));
	    if (!dif) PEX_ERR_EXIT(BadAlloc,0,cntxtPtr);
	    dif->ddFont.id = strmPtr->font;
	    dif->refcnt = 1;

	    err = OpenPEXFont(	(ddULONG)(strmPtr->numBytes), 
				(ddUCHAR *)(strmPtr + 1), &(dif->ddFont));
	    if (err) {
		Xfree((pointer)dif);
		PEX_ERR_EXIT(err,0,cntxtPtr);
	    }

	/*
         * Note that fonts resources are stored with the type (dipexFont *),
         * and they are referenced sometimes in the DD layer as diFontHandle
         * (which is a pointer to a ddFontResource).  Since the first part
         * of the dipexFont structure consists of a ddFontResource, this
         * works.  Even though it is ugly, it's best not to start changing
         * all of the font code at this time (right before a public release),
         * and hopefully, it will get cleaned up for PEX 6.0.
	 */

	ADDRESOURCE(strmPtr->font, PEXFontType, dif);

	} 

    return(err);

} /* end-PEXOpenFont() */

static dipexFont *
FindPEXFontEntry(fname)
unsigned char *fname;
{
    return (0);		    /* stub */
}

/*++	PEXCloseFont
 --*/
ErrorCode
PEXCloseFont (cntxtPtr, strmPtr)
pexContext      *cntxtPtr;
pexCloseFontReq *strmPtr;
{
    ErrorCode err = Success;
    diFontHandle pf = 0;

    if ((strmPtr == NULL) || (strmPtr->id == 0)) {
	err = PEX_ERROR_CODE(PEXFontError);
	PEX_ERR_EXIT(err,0,cntxtPtr);
    }

    LU_PEXFONT(strmPtr->id, pf);

    FreeResource(strmPtr->id, RT_NONE);

    return(err);

} /* end-PEXCloseFont() */

/*++	PEXQueryFont
 --*/
ErrorCode
PEXQueryFont( cntxtPtr, strmPtr )
pexContext      	*cntxtPtr;
pexQueryFontReq    	*strmPtr;
{
    ErrorCode err = Success;
    diFontHandle pf = 0;
    extern ddBuffer *pPEXBuffer;

    LU_PEXFONT(strmPtr->font, pf);

    SETUP_INQ(pexQueryFontReply);

    err = QueryPEXFont (pf, pPEXBuffer);
    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);

    {
	SETUP_VAR_REPLY(pexQueryFontReply);
	reply->lengthFontInfo = pPEXBuffer->dataSize;
	WritePEXBufferReply(pexQueryFontReply);
    }
    return( err );

} /* end-PEXQueryFont() */

/*++	PEXListFonts
 --*/
ErrorCode
PEXListFonts( cntxtPtr, strmPtr )
pexContext      	*cntxtPtr;
pexListFontsReq 	*strmPtr;
{
    ErrorCode err = Success;
    extern ddBuffer *pPEXBuffer;
    CARD32 numStrings;

    SETUP_INQ(pexListFontsReply);

    err = ListPEXFonts(	strmPtr->numChars, (CARD8 *)(strmPtr+1),
			strmPtr->maxNames, &numStrings,	pPEXBuffer);
    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);

    {
	SETUP_VAR_REPLY(pexListFontsReply);
	reply->numStrings = numStrings;
	WritePEXBufferReply(pexListFontsReply);
    }
    return( err );

} /* end-PEXListFonts() */

/*++	PEXListFontsWithInfo
 --*/
ErrorCode
PEXListFontsWithInfo( cntxtPtr, strmPtr )
pexContext      	*cntxtPtr;
pexListFontsWithInfoReq *strmPtr;
{
    ErrorCode err = Success;
    extern ddBuffer *pPEXBuffer;
    CARD32 numStrings;

    SETUP_INQ(pexListFontsWithInfoReply);

    err = ListPEXFontsPlus( strmPtr->numChars, (CARD8 *)(strmPtr+1),
			    strmPtr->maxNames, &numStrings, pPEXBuffer);
    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);

    {
	SETUP_VAR_REPLY(pexListFontsWithInfoReply);
	reply->numStrings = numStrings;
	WritePEXBufferReply(pexListFontsWithInfoReply);
    }
    return( err );

} /* end-PEXListFontsWithInfo() */

/*++	PEXQueryTextExtents
 --*/
ErrorCode
PEXQueryTextExtents( cntxtPtr, strmPtr )
pexContext      	*cntxtPtr;
pexQueryTextExtentsReq  *strmPtr;
{
    ErrorCode err = Success;
    extern ddBuffer *pPEXBuffer;
    diResourceHandle ptr;
    ddResourceType what;

    if (! (ptr = (diResourceHandle) LookupIDByType (strmPtr->id, PEXLutType)))
	if (! (ptr = (diResourceHandle) LookupIDByType (strmPtr->id, PEXWksType)))
	    if (! (ptr = (diResourceHandle) LookupIDByType (strmPtr->id, PEXRendType)))
		PEX_ERR_EXIT(BadValue,strmPtr->id,cntxtPtr)
	    else what = RENDERER_RESOURCE;
	else what = WORKSTATION_RESOURCE;
    else {
	what = LOOKUP_TABLE_RESOURCE;
	if (((ddLUTResource *)ptr)->lutType != PEXTextFontLUT) {
	    PEX_ERR_EXIT(BadMatch,strmPtr->id,cntxtPtr);
	}
    }

    SETUP_INQ(pexQueryTextExtentsReply);

    err = QueryPEXTextExtents(	ptr, what, strmPtr->fontGroupIndex,
				strmPtr->textPath, strmPtr->charExpansion,
				strmPtr->charSpacing, strmPtr->charHeight,
				&(strmPtr->textAlignment), strmPtr->numStrings,
				(ddPointer)(strmPtr + 1), pPEXBuffer);
    if (err) PEX_ERR_EXIT(err,0,cntxtPtr);

    {
	SETUP_VAR_REPLY(pexQueryTextExtentsReply);
	WritePEXBufferReply(pexQueryTextExtentsReply);
    }
    return( err );

} /* end-PEXQueryTextExtents() */
/*++
 *
 *	End of File
 *
 --*/