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/* Copyright (C) 1994, 2000 Aladdin Enterprises. All rights reserved.
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This software is provided AS-IS with no warranty, either express or
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implied.
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This software is distributed under license and may not be copied,
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modified or distributed except as expressly authorized under the terms
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of the license contained in the file LICENSE in this distribution.
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For more information about licensing, please refer to
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http://www.ghostscript.com/licensing/. For information on
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commercial licensing, go to http://www.artifex.com/licensing/ or
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contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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*/
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/* $Id: ichar.h,v 1.7 2004/08/04 19:36:12 stefan Exp $ */
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/* Character rendering operator definitions and support procedures */
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/* Requires gstext.h */
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#ifndef ichar_INCLUDED
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# define ichar_INCLUDED
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/*
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* All the character rendering operators use the execution stack
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* for loop control -- see estack.h for details.
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* The information pushed by these operators is as follows:
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* the enumerator (t_struct, a gs_text_enum_t);
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* a slot for the procedure for kshow or cshow (probably t_array);
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* a slot for the saved o-stack depth for cshow or stringwidth,
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* and for error recovery (t_integer);
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* a slot for the saved d-stack depth ditto (t_integer);
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* a slot for the saved gstate level ditto (t_integer);
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* a slot for saving the font during the cshow proc (t_struct);
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* a slot for saving the root font during the cshow proc (t_struct);
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* the procedure to be called at the end of the enumeration
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* (t_operator, but called directly, not by the interpreter);
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* the usual e-stack mark (t_null).
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*/
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#define snumpush 9
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#define esenum(ep) r_ptr(ep, gs_text_enum_t)
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#define senum esenum(esp)
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#define esslot(ep) ((ep)[-1])
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#define sslot esslot(esp)
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#define esodepth(ep) ((ep)[-2])
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#define sodepth esodepth(esp)
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#define esddepth(ep) ((ep)[-3])
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#define sddepth esddepth(esp)
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#define esgslevel(ep) ((ep)[-4])
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#define sgslevel esgslevel(esp)
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#define essfont(ep) ((ep)[-5])
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#define ssfont essfont(esp)
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#define esrfont(ep) ((ep)[-6])
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#define srfont esrfont(esp)
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#define eseproc(ep) ((ep)[-7])
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#define seproc eseproc(esp)
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/* Procedures exported by zchar.c for zchar*.c. */
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gs_text_enum_t *op_show_find(i_ctx_t *);
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int op_show_setup(i_ctx_t *, os_ptr);
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int op_show_enum_setup(i_ctx_t *);
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int op_show_finish_setup(i_ctx_t *, gs_text_enum_t *, int, op_proc_t);
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int op_show_continue(i_ctx_t *);
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int op_show_continue_pop(i_ctx_t *, int);
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int op_show_continue_dispatch(i_ctx_t *, int, int);
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int op_show_free(i_ctx_t *, int);
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void glyph_ref(const gs_memory_t *mem, gs_glyph, ref *);
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int finish_stringwidth(i_ctx_t *);
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/* Exported by zchar.c for zcharout.c */
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bool zchar_show_width_only(const gs_text_enum_t *);
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int zsetcachedevice(i_ctx_t *);
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int zsetcachedevice2(i_ctx_t *);
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#endif /* ichar_INCLUDED */
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