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/* Copyright (C) 1995, 1996, 1998 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: gsrop.c,v 1.4 2002/02/21 22:24:52 giles Exp $ */
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/* RasterOp / transparency accessing for library */
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#include "gx.h"
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#include "gserrors.h"
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#include "gzstate.h"
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#include "gsrop.h"
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/* setrasterop */
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int
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gs_setrasterop(gs_state * pgs, gs_rop3_t rop)
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{
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if (pgs->in_cachedevice)
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return_error(gs_error_undefined);
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pgs->log_op = (rop & rop3_1) | (pgs->log_op & ~rop3_1);
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return 0;
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}
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/* currentrasterop */
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gs_rop3_t
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gs_currentrasterop(const gs_state * pgs)
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{
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return lop_rop(pgs->log_op);
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}
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/* setsourcetransparent */
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int
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gs_setsourcetransparent(gs_state * pgs, bool transparent)
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{
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if (pgs->in_cachedevice)
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return_error(gs_error_undefined);
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pgs->log_op =
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(transparent ? pgs->log_op | lop_S_transparent :
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pgs->log_op & ~lop_S_transparent);
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return 0;
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}
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/* currentsourcetransparent */
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bool
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gs_currentsourcetransparent(const gs_state * pgs)
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{
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return (pgs->log_op & lop_S_transparent) != 0;
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}
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/* settexturetransparent */
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int
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gs_settexturetransparent(gs_state * pgs, bool transparent)
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{
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if (pgs->in_cachedevice)
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return_error(gs_error_undefined);
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pgs->log_op =
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(transparent ? pgs->log_op | lop_T_transparent :
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pgs->log_op & ~lop_T_transparent);
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return 0;
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}
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/* currenttexturetransparent */
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bool
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gs_currenttexturetransparent(const gs_state * pgs)
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{
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return (pgs->log_op & lop_T_transparent) != 0;
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}
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/* Save/restore logical operation. (For internal use only.) */
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int
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gs_set_logical_op(gs_state * pgs, gs_logical_operation_t lop)
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{
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pgs->log_op = lop;
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return 0;
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}
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gs_logical_operation_t
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gs_current_logical_op(const gs_state * pgs)
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{
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return pgs->log_op;
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}
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