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- /* Copyright (C) 1995, 1996, 1998 Aladdin Enterprises. All rights reserved.
-
- This file is part of AFPL Ghostscript.
-
- AFPL 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 Free Public License (the
- "License") for full details.
-
- Every copy of AFPL 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 AFPL 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.
- */
-
- /*$Id: gsrop.c,v 1.2 2000/09/19 19:00:32 lpd Exp $ */
- /* RasterOp / transparency accessing for library */
- #include "gx.h"
- #include "gserrors.h"
- #include "gzstate.h"
- #include "gsrop.h"
-
- /* setrasterop */
- int
- gs_setrasterop(gs_state * pgs, gs_rop3_t rop)
- {
- if (pgs->in_cachedevice)
- return_error(gs_error_undefined);
- pgs->log_op = (rop & rop3_1) | (pgs->log_op & ~rop3_1);
- return 0;
- }
-
- /* currentrasterop */
- gs_rop3_t
- gs_currentrasterop(const gs_state * pgs)
- {
- return lop_rop(pgs->log_op);
- }
-
- /* setsourcetransparent */
- int
- gs_setsourcetransparent(gs_state * pgs, bool transparent)
- {
- if (pgs->in_cachedevice)
- return_error(gs_error_undefined);
- pgs->log_op =
- (transparent ? pgs->log_op | lop_S_transparent :
- pgs->log_op & ~lop_S_transparent);
- return 0;
- }
-
- /* currentsourcetransparent */
- bool
- gs_currentsourcetransparent(const gs_state * pgs)
- {
- return (pgs->log_op & lop_S_transparent) != 0;
- }
-
- /* settexturetransparent */
- int
- gs_settexturetransparent(gs_state * pgs, bool transparent)
- {
- if (pgs->in_cachedevice)
- return_error(gs_error_undefined);
- pgs->log_op =
- (transparent ? pgs->log_op | lop_T_transparent :
- pgs->log_op & ~lop_T_transparent);
- return 0;
- }
-
- /* currenttexturetransparent */
- bool
- gs_currenttexturetransparent(const gs_state * pgs)
- {
- return (pgs->log_op & lop_T_transparent) != 0;
- }
-
- /* Save/restore logical operation. (For internal use only.) */
- int
- gs_set_logical_op(gs_state * pgs, gs_logical_operation_t lop)
- {
- pgs->log_op = lop;
- return 0;
- }
- gs_logical_operation_t
- gs_current_logical_op(const gs_state * pgs)
- {
- return pgs->log_op;
- }
-