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/* Copyright (C) 1994, 1997 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: gsht1.h,v 1.5 2002/06/16 08:45:42 lpd Exp $ */
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/* Extended public interface to halftones */
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#ifndef gsht1_INCLUDED
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# define gsht1_INCLUDED
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#include "gsht.h"
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/* Procedural interface */
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int gs_setcolorscreen(gs_state *, gs_colorscreen_halftone *);
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int gs_currentcolorscreen(gs_state *, gs_colorscreen_halftone *);
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/*
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* We include sethalftone here, even though it is a Level 2 feature,
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* because it turns out to be convenient to define setcolorscreen
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* using sethalftone.
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*/
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#ifndef gs_halftone_DEFINED
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# define gs_halftone_DEFINED
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typedef struct gs_halftone_s gs_halftone;
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#endif
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/*
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* gs_halftone structures may have complex substructures. We provide two
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* procedures for setting them. gs_halftone assumes that the gs_halftone
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* structure and all its substructures was allocated with the same allocator
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* as the gs_state; gs_halftone_allocated looks in the structure itself (the
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* rc.memory member) to find the allocator that was used. Both procedures
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* copy the top-level structure (using the appropriate allocator), but take
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* ownership of the substructures.
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*/
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int gs_sethalftone(gs_state *, gs_halftone *);
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int gs_sethalftone_allocated(gs_state *, gs_halftone *);
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int gs_currenthalftone(gs_state *, gs_halftone *);
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#endif /* gsht1_INCLUDED */
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