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- /* Copyright (C) 1989, 1990, 1991 Aladdin Enterprises. All rights reserved.
- Distributed by Free Software Foundation, Inc.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* gsstate.h */
- /* Graphics state routines for Ghostscript library */
-
- /* Opaque type for a graphics state */
- /*typedef struct gs_state_s gs_state;*/ /* defined in gs.h */
- extern const uint gs_state_sizeof;
-
- /* Line cap values */
- typedef enum {
- gs_cap_butt = 0,
- gs_cap_round = 1,
- gs_cap_square = 2
- } gs_line_cap;
-
- /* Line join values */
- typedef enum {
- gs_join_miter = 0,
- gs_join_round = 1,
- gs_join_bevel = 2
- } gs_line_join;
-
- /* Allocation, freeing, and initialization */
- gs_state *gs_state_alloc(P2(proc_alloc_t, proc_free_t)); /* 0 if fails */
- int gs_state_free(P1(gs_state *));
- int gs_gsave(P1(gs_state *)),
- gs_grestore(P1(gs_state *)),
- gs_grestoreall(P1(gs_state *));
- gs_state *gs_state_swap_saved(P2(gs_state *, gs_state *)); /* special for save/restore */
- void gs_state_swap(P2(gs_state *, gs_state *)); /* special for save/restore */
- int gs_initgraphics(P1(gs_state *));
- /* Device control */
- #ifndef gx_device_DEFINED
- # define gx_device_DEFINED
- typedef struct gx_device_s gx_device;
- #endif
- int gs_flushpage(P1(gs_state *));
- int gs_copypage(P1(gs_state *));
- int gs_copyscanlines(P6(gx_device *, int, byte *, uint, int *, uint *));
- gx_device * gs_getdevice(P1(int));
- int gs_makedevice(P6(gx_device **, gx_device *, gs_matrix *, uint, uint, proc_alloc_t));
- int gs_makeimagedevice(P7(gx_device **, gs_matrix *, uint, uint, float *, int, proc_alloc_t));
- void gs_nulldevice(P1(gs_state *));
- int gs_setdevice(P2(gs_state *, gx_device *));
- gx_device * gs_currentdevice(P1(gs_state *));
- char * gs_devicename(P1(gx_device *));
- void gs_deviceparams(P4(gx_device *, gs_matrix *, int *, int *));
- int gs_closedevice(P1(gx_device *));
-
- /* Line parameters and quality */
- int gs_setlinewidth(P2(gs_state *, floatp));
- float gs_currentlinewidth(P1(gs_state *));
- int gs_setlinecap(P2(gs_state *, gs_line_cap));
- gs_line_cap gs_currentlinecap(P1(gs_state *));
- int gs_setlinejoin(P2(gs_state *, gs_line_join));
- gs_line_join gs_currentlinejoin(P1(gs_state *));
- int gs_setmiterlimit(P2(gs_state *, floatp));
- float gs_currentmiterlimit(P1(gs_state *));
- int gs_setdash(P4(gs_state *, float *, uint, floatp));
- uint gs_currentdash_length(P1(gs_state *));
- int gs_currentdash_pattern(P2(gs_state *, float *));
- float gs_currentdash_offset(P1(gs_state *));
- int gs_setflat(P2(gs_state *, floatp));
- float gs_currentflat(P1(gs_state *));
-
- /* Color and gray */
- #include "gscolor.h"
-
- /* Halftone screen */
- int gs_setscreen(P4(gs_state *, floatp, floatp, float (*)(P2(floatp, floatp))));
- int gs_currentscreen(P4(gs_state *, float *, float *, float (**)(P2(floatp, floatp))));
- int gs_sethalftonephase(P3(gs_state *, int, int));
- int gs_currenthalftonephase(P2(gs_state *, gs_int_point *));
- /* Enumeration-style screen definition */
- typedef struct gs_screen_enum_s gs_screen_enum;
- extern const uint gs_screen_enum_sizeof;
- int gs_screen_init(P4(gs_screen_enum *, gs_state *, floatp, floatp));
- int gs_screen_currentpoint(P2(gs_screen_enum *, gs_point *));
- int gs_screen_next(P2(gs_screen_enum *, floatp));
-