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- /* Copyright (C) 1994, 1997 Aladdin Enterprises. All rights reserved.
-
- This file is part of Aladdin Ghostscript.
-
- Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
- or distributor accepts any responsibility for the consequences of using it,
- or for whether it serves any particular purpose or works at all, unless he
- or she says so in writing. Refer to the Aladdin Ghostscript Free Public
- License (the "License") for full details.
-
- Every copy of Aladdin Ghostscript must include a copy of the License,
- normally in a plain ASCII text file named PUBLIC. The License grants you
- the right to copy, modify and redistribute Aladdin Ghostscript, but only
- under certain conditions described in the License. Among other things, the
- License requires that the copyright notice and this notice be preserved on
- all copies.
- */
-
- /* gsht1.h */
- /* Extended public interface to halftones */
-
- #ifndef gsht1_INCLUDED
- # define gsht1_INCLUDED
-
- #include "gsht.h"
-
- /* Procedural interface */
- int gs_setcolorscreen(P2(gs_state *, gs_colorscreen_halftone *));
- int gs_currentcolorscreen(P2(gs_state *, gs_colorscreen_halftone *));
-
- /*
- * We include sethalftone here, even though it is a Level 2 feature,
- * because it turns out to be convenient to define setcolorscreen
- * using sethalftone.
- */
- #ifndef gs_halftone_DEFINED
- # define gs_halftone_DEFINED
- typedef struct gs_halftone_s gs_halftone;
- #endif
- /*
- * gs_halftone structures may have complex substructures. We provide two
- * procedures for setting them. gs_halftone assumes that the gs_halftone
- * structure and all its substructures was allocated with the same allocator
- * as the gs_state; gs_halftone_allocated looks in the structure itself (the
- * rc.memory member) to find the allocator that was used Both procedures
- * copy the top-level structure (using the appropriate allocator), but take
- * ownership of the substructures.
- */
- int gs_sethalftone(P2(gs_state *, gs_halftone *));
- int gs_sethalftone_allocated(P2(gs_state *, gs_halftone *));
- int gs_currenthalftone(P2(gs_state *, gs_halftone *));
-
- #endif /* gsht1_INCLUDED */
-