File: icharout.h

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/* Copyright (C) 2001-2006 Artifex Software, Inc.
   All Rights Reserved.
  
   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied, modified
   or distributed except as expressly authorized under the terms of that
   license.  Refer to licensing information at http://www.artifex.com/
   or contact Artifex Software, Inc.,  7 Mt. Lassen Drive - Suite A-134,
   San Rafael, CA  94903, U.S.A., +1(415)492-9861, for further information.
*/

/* $Id: icharout.h 9043 2008-08-28 22:48:19Z giles $ */
/* Interface to zcharout.c */

#ifndef icharout_INCLUDED
#  define icharout_INCLUDED

/* Execute an outline defined by a PostScript procedure. */
int zchar_exec_char_proc(i_ctx_t *);

/*
 * Get the metrics for a character from the Metrics dictionary of a base
 * font.  If present, store the l.s.b. in psbw[0,1] and the width in
 * psbw[2,3].
 */
typedef enum {
    metricsNone = 0,
    metricsWidthOnly = 1,
    metricsSideBearingAndWidth = 2
} metrics_present;
int /*metrics_present*/
  zchar_get_metrics(const gs_font_base * pbfont, const ref * pcnref,
		    double psbw[4]);

/* Get the vertical metrics for a character from Metrics2, if present. */
int /*metrics_present*/
  zchar_get_metrics2(const gs_font_base * pbfont, const ref * pcnref,
		     double pwv[4]);
/*  Get CDevProc. */
bool zchar_get_CDevProc(const gs_font_base * pbfont, ref **ppcdevproc);

/*
 * Consult Metrics2 and CDevProc, and call setcachedevice[2].  Return
 * o_push_estack if we had to call a CDevProc, or if we are skipping the
 * rendering process (only getting the metrics).
 */
int zchar_set_cache(i_ctx_t *i_ctx_p, const gs_font_base * pbfont,
		    const ref * pcnref, const double psb[2],
		    const double pwidth[2], const gs_rect * pbbox,
    		    op_proc_t cont, op_proc_t *exec_cont,
		    const double Metrics2_sbw_default[4]);

/*
 * Get the CharString data corresponding to a glyph.  Return typecheck
 * if it isn't a string.
 */
int zchar_charstring_data(gs_font *font, const ref *pgref,
			  gs_glyph_data_t *pgd);

/*
 * Enumerate the next glyph from a directory.  This is essentially a
 * wrapper around dict_first/dict_next to implement the enumerate_glyph
 * font procedure.
 */
int zchar_enumerate_glyph(const gs_memory_t *mem, const ref *prdict, int *pindex, gs_glyph *pglyph);

#endif /* icharout_INCLUDED */