1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* Copyright (C) 1989, 1992, 1993, 1994, 1996, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
This software is provided AS-IS with no warranty, either express or
implied.
This software is distributed under license and may not be copied,
modified or distributed except as expressly authorized under the terms
of the license contained in the file LICENSE in this distribution.
For more information about licensing, please refer to
http://www.ghostscript.com/licensing/. For information on
commercial licensing, go to http://www.artifex.com/licensing/ or
contact Artifex Software, Inc., 101 Lucas Valley Road #110,
San Rafael, CA 94903, U.S.A., +1(415)492-9861.
*/
/* $Id$ */
/* Level 1 extended color operators for Ghostscript library */
#include "gx.h"
#include "gserrors.h"
#include "gsstruct.h"
#include "gsutil.h" /* for gs_next_ids */
#include "gsccolor.h"
#include "gxcspace.h"
#include "gxdcconv.h"
#include "gxdevice.h" /* for gx_color_index */
#include "gxcmap.h"
#include "gzstate.h"
#include "gscolor1.h"
#include "gscolor2.h"
#include "gxhttype.h"
#include "gzht.h"
/* Imports from gscolor.c */
void load_transfer_map(gs_state *, gx_transfer_map *, floatp);
/* Imported from gsht.c */
void gx_set_effective_transfer(gs_state *);
/* Force a parameter into the range [0.0..1.0]. */
#define FORCE_UNIT(p) (p < 0.0 ? 0.0 : p > 1.0 ? 1.0 : p)
/* setcmykcolor */
int
gs_setcmykcolor(gs_state * pgs, floatp c, floatp m, floatp y, floatp k)
{
gs_color_space cs;
int code;
gs_cspace_init_DeviceCMYK(pgs->memory, &cs);
if ((code = gs_setcolorspace(pgs, &cs)) >= 0) {
gs_client_color * pcc = pgs->ccolor;
cs_adjust_color_count(pgs, -1); /* not strictly necessary */
pcc->paint.values[0] = FORCE_UNIT(c);
pcc->paint.values[1] = FORCE_UNIT(m);
pcc->paint.values[2] = FORCE_UNIT(y);
pcc->paint.values[3] = FORCE_UNIT(k);
pcc->pattern = 0; /* for GC */
gx_unset_dev_color(pgs);
}
return code;
}
/* setblackgeneration */
/* Remap=0 is used by the interpreter. */
int
gs_setblackgeneration(gs_state * pgs, gs_mapping_proc proc)
{
return gs_setblackgeneration_remap(pgs, proc, true);
}
int
gs_setblackgeneration_remap(gs_state * pgs, gs_mapping_proc proc, bool remap)
{
rc_unshare_struct(pgs->black_generation, gx_transfer_map,
&st_transfer_map, pgs->memory,
return_error(gs_error_VMerror),
"gs_setblackgeneration");
pgs->black_generation->proc = proc;
pgs->black_generation->id = gs_next_ids(pgs->memory, 1);
if (remap) {
load_transfer_map(pgs, pgs->black_generation, 0.0);
gx_unset_dev_color(pgs);
}
return 0;
}
/* currentblackgeneration */
gs_mapping_proc
gs_currentblackgeneration(const gs_state * pgs)
{
return pgs->black_generation->proc;
}
/* setundercolorremoval */
/* Remap=0 is used by the interpreter. */
int
gs_setundercolorremoval(gs_state * pgs, gs_mapping_proc proc)
{
return gs_setundercolorremoval_remap(pgs, proc, true);
}
int
gs_setundercolorremoval_remap(gs_state * pgs, gs_mapping_proc proc, bool remap)
{
rc_unshare_struct(pgs->undercolor_removal, gx_transfer_map,
&st_transfer_map, pgs->memory,
return_error(gs_error_VMerror),
"gs_setundercolorremoval");
pgs->undercolor_removal->proc = proc;
pgs->undercolor_removal->id = gs_next_ids(pgs->memory, 1);
if (remap) {
load_transfer_map(pgs, pgs->undercolor_removal, -1.0);
gx_unset_dev_color(pgs);
}
return 0;
}
/* currentundercolorremoval */
gs_mapping_proc
gs_currentundercolorremoval(const gs_state * pgs)
{
return pgs->undercolor_removal->proc;
}
/* setcolortransfer */
/* Remap=0 is used by the interpreter. */
int
gs_setcolortransfer_remap(gs_state * pgs, gs_mapping_proc red_proc,
gs_mapping_proc green_proc,
gs_mapping_proc blue_proc,
gs_mapping_proc gray_proc, bool remap)
{
gx_transfer *ptran = &pgs->set_transfer;
gx_transfer old;
gs_id new_ids = gs_next_ids(pgs->memory, 4);
gx_device * dev = pgs->device;
old = *ptran;
rc_unshare_struct(ptran->gray, gx_transfer_map, &st_transfer_map,
pgs->memory, goto fgray, "gs_setcolortransfer");
rc_unshare_struct(ptran->red, gx_transfer_map, &st_transfer_map,
pgs->memory, goto fred, "gs_setcolortransfer");
rc_unshare_struct(ptran->green, gx_transfer_map, &st_transfer_map,
pgs->memory, goto fgreen, "gs_setcolortransfer");
rc_unshare_struct(ptran->blue, gx_transfer_map, &st_transfer_map,
pgs->memory, goto fblue, "gs_setcolortransfer");
ptran->gray->proc = gray_proc;
ptran->gray->id = new_ids;
ptran->red->proc = red_proc;
ptran->red->id = new_ids + 1;
ptran->green->proc = green_proc;
ptran->green->id = new_ids + 2;
ptran->blue->proc = blue_proc;
ptran->blue->id = new_ids + 3;
ptran->red_component_num =
gs_color_name_component_number(dev, "Red", 3, ht_type_colorscreen);
ptran->green_component_num =
gs_color_name_component_number(dev, "Green", 5, ht_type_colorscreen);
ptran->blue_component_num =
gs_color_name_component_number(dev, "Blue", 4, ht_type_colorscreen);
ptran->gray_component_num =
gs_color_name_component_number(dev, "Gray", 4, ht_type_colorscreen);
if (remap) {
load_transfer_map(pgs, ptran->red, 0.0);
load_transfer_map(pgs, ptran->green, 0.0);
load_transfer_map(pgs, ptran->blue, 0.0);
load_transfer_map(pgs, ptran->gray, 0.0);
gx_set_effective_transfer(pgs);
gx_unset_dev_color(pgs);
} else
gx_set_effective_transfer(pgs);
return 0;
fblue:
rc_assign(ptran->green, old.green, "setcolortransfer");
fgreen:
rc_assign(ptran->red, old.red, "setcolortransfer");
fred:
rc_assign(ptran->gray, old.gray, "setcolortransfer");
fgray:
return_error(gs_error_VMerror);
}
int
gs_setcolortransfer(gs_state * pgs, gs_mapping_proc red_proc,
gs_mapping_proc green_proc, gs_mapping_proc blue_proc,
gs_mapping_proc gray_proc)
{
return gs_setcolortransfer_remap(pgs, red_proc, green_proc,
blue_proc, gray_proc, true);
}
/* currentcolortransfer */
void
gs_currentcolortransfer(const gs_state * pgs, gs_mapping_proc procs[4])
{
const gx_transfer *ptran = &pgs->set_transfer;
procs[0] = ptran->red->proc;
procs[1] = ptran->green->proc;
procs[2] = ptran->blue->proc;
procs[3] = ptran->gray->proc;
}
|
