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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
|
/* Copyright (C) 2001-2006 Artifex Software, Inc.
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 that
license. Refer to licensing information at http://www.artifex.com/
or contact Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134,
San Rafael, CA 94903, U.S.A., +1(415)492-9861, for further information.
*/
/* $Id: gspcolor.c 8250 2007-09-25 13:31:24Z giles $ */
/* Pattern color operators and procedures for Ghostscript library */
#include "math_.h"
#include "gx.h"
#include "gserrors.h"
#include "gsrop.h"
#include "gsstruct.h"
#include "gsutil.h" /* for gs_next_ids */
#include "gxarith.h"
#include "gxfixed.h"
#include "gxmatrix.h"
#include "gxcoord.h" /* for gs_concat, gx_tr'_to_fixed */
#include "gxcspace.h" /* for gscolor2.h */
#include "gxcolor2.h"
#include "gxdcolor.h"
#include "gxdevice.h"
#include "gxdevmem.h"
#include "gxclip2.h"
#include "gspath.h"
#include "gxpath.h"
#include "gxpcolor.h"
#include "gzstate.h"
#include "gsimage.h"
#include "gsiparm4.h"
#include "stream.h"
/* GC descriptors */
public_st_pattern_template();
public_st_pattern_instance();
/* Define the Pattern color space. */
gs_private_st_composite(st_color_space_Pattern, gs_color_space,
"gs_color_space_Pattern", cs_Pattern_enum_ptrs, cs_Pattern_reloc_ptrs);
static cs_proc_num_components(gx_num_components_Pattern);
static cs_proc_remap_color(gx_remap_Pattern);
static cs_proc_init_color(gx_init_Pattern);
static cs_proc_restrict_color(gx_restrict_Pattern);
static cs_proc_install_cspace(gx_install_Pattern);
static cs_proc_set_overprint(gx_set_overprint_Pattern);
static cs_proc_final(gx_final_Pattern);
static cs_proc_adjust_color_count(gx_adjust_color_Pattern);
static cs_proc_serialize(gx_serialize_Pattern);
const gs_color_space_type gs_color_space_type_Pattern = {
gs_color_space_index_Pattern, false, false,
&st_color_space_Pattern, gx_num_components_Pattern,
gx_init_Pattern, gx_restrict_Pattern,
gx_no_concrete_space,
gx_no_concretize_color, NULL,
gx_remap_Pattern, gx_install_Pattern,
gx_set_overprint_Pattern,
gx_final_Pattern, gx_adjust_color_Pattern,
gx_serialize_Pattern,
gx_cspace_no_linear
};
/* Initialize a generic pattern template. */
void
gs_pattern_common_init(gs_pattern_template_t * ppat,
const gs_pattern_type_t *type)
{
ppat->type = type;
ppat->PatternType = type->PatternType;
uid_set_invalid(&ppat->uid);
ppat->client_data = 0; /* for GC */
}
/* Generic makepattern */
int
gs_make_pattern(gs_client_color * pcc, const gs_pattern_template_t * pcp,
const gs_matrix * pmat, gs_state * pgs, gs_memory_t * mem)
{
return pcp->type->procs.make_pattern(pcc, pcp, pmat, pgs, mem);
}
/*
* Do the generic work for makepattern: allocate the instance and the
* saved graphics state, and fill in the common members.
*/
int
gs_make_pattern_common(gs_client_color *pcc,
const gs_pattern_template_t *ptemp,
const gs_matrix *pmat, gs_state *pgs, gs_memory_t *mem,
gs_memory_type_ptr_t pstype)
{
gs_pattern_instance_t *pinst;
gs_state *saved;
if (mem == 0)
mem = gs_state_memory(pgs);
rc_alloc_struct_1(pinst, gs_pattern_instance_t, pstype, mem,
return_error(gs_error_VMerror),
"gs_make_pattern_common");
pinst->rc.free = rc_free_pattern_instance;
pinst->type = ptemp->type;
saved = gs_state_copy(pgs, mem);
if (saved == 0) {
gs_free_object(mem, pinst, "gs_make_pattern_common");
return_error(gs_error_VMerror);
}
gs_concat(saved, pmat);
gs_newpath(saved);
pinst->saved = saved;
pcc->pattern = pinst;
pcc->pattern->pattern_id = gs_next_ids(mem, 1);
return 0;
}
/* Free the saved gstate when freeing a Pattern instance. */
void
rc_free_pattern_instance(gs_memory_t * mem, void *pinst_void,
client_name_t cname)
{
gs_pattern_instance_t *pinst = pinst_void;
gs_state_free(pinst->saved);
rc_free_struct_only(mem, pinst_void, cname);
}
/* setpattern */
int
gs_setpattern(gs_state * pgs, const gs_client_color * pcc)
{
int code = gs_setpatternspace(pgs);
if (code < 0)
return code;
return gs_setcolor(pgs, pcc);
}
/* setpatternspace */
/* This does all the work of setpattern except for the final setcolor. */
int
gs_setpatternspace(gs_state * pgs)
{
int code = 0;
gs_color_space *ccs_old;
if (pgs->in_cachedevice)
return_error(gs_error_undefined);
ccs_old = gs_currentcolorspace_inline(pgs);
if (ccs_old->type->index != gs_color_space_index_Pattern) {
gs_color_space *pcs;
pcs = gs_cspace_alloc(pgs->memory, &gs_color_space_type_Pattern);
if (pcs == NULL)
return_error(gs_error_VMerror);
/* reference to base space shifts from pgs to pcs with no net change */
pcs->base_space = ccs_old;
pcs->params.pattern.has_base_space = true;
pgs->color[0].color_space = pcs;
cs_full_init_color(pgs->color[0].ccolor, pcs);
gx_unset_dev_color(pgs);
}
return code;
}
/*
* Adjust the reference count of a pattern. This is intended to support
* applications (such as PCL) which maintain client colors outside of the
* graphic state. Since the pattern instance structure is opaque to these
* applications, they need some way to release or retain the instances as
* needed.
*/
void
gs_pattern_reference(gs_client_color * pcc, int delta)
{
if (pcc->pattern != 0)
rc_adjust(pcc->pattern, delta, "gs_pattern_reference");
}
/* getpattern */
/* This is only intended for the benefit of pattern PaintProcs. */
const gs_pattern_template_t *
gs_get_pattern(const gs_client_color * pcc)
{
const gs_pattern_instance_t *pinst = pcc->pattern;
return (pinst == 0 ? 0 : pinst->type->procs.get_pattern(pinst));
}
/*
* Get the number of components in a Pattern color.
* For backward compatibility, and to distinguish Pattern color spaces
* from all others, we negate the result.
*/
static int
gx_num_components_Pattern(const gs_color_space * pcs)
{
return
(pcs->params.pattern.has_base_space ?
-1 - cs_num_components(pcs->base_space) :
-1 /* Pattern dictionary only */ );
}
/* Remap a Pattern color. */
static int
gx_remap_Pattern(const gs_client_color * pc, const gs_color_space * pcs,
gx_device_color * pdc, const gs_imager_state * pis,
gx_device * dev, gs_color_select_t select)
{
if (pc->pattern == 0) {
pdc->ccolor_valid = false;
pdc->ccolor.pattern = 0; /* for GC */
color_set_null_pattern(pdc);
return 0;
}
return
pc->pattern->type->procs.remap_color(pc, pcs, pdc, pis, dev, select);
}
/* Initialize a Pattern color. */
static void
gx_init_Pattern(gs_client_color * pcc, const gs_color_space * pcs)
{
if (pcs->params.pattern.has_base_space) {
const gs_color_space *pbcs = pcs->base_space;
cs_init_color(pcc, pbcs);
}
/*pcc->pattern = 0; *//* cs_full_init_color handles this */
}
/* Force a Pattern color into legal range. */
/* Note that if the pattern is uncolored (PaintType = 2), */
/* the color space must have a base space: we check this here only */
/* to prevent accessing uninitialized data, but if there is no base space, */
/* it is an error that we count on being detected elsewhere. */
static void
gx_restrict_Pattern(gs_client_color * pcc, const gs_color_space * pcs)
{
/* We need a special check for the null pattern. */
if (pcc->pattern &&
pcc->pattern->type->procs.uses_base_space(gs_get_pattern(pcc)) &&
pcs->params.pattern.has_base_space
) {
const gs_color_space *pbcs = pcs->base_space;
(*pbcs->type->restrict_color) (pcc, pbcs);
}
}
/* Install a Pattern color space. */
static int
gx_install_Pattern(gs_color_space * pcs, gs_state * pgs)
{
if (!pcs->params.pattern.has_base_space)
return 0;
return (pcs->base_space->type->install_cspace)(pcs->base_space, pgs);
}
/*
* Set the overprint compositor for a Pattern color space. This does nothing;
* for patterns the overprint compositor is set at set_device_color time.
*/
static int
gx_set_overprint_Pattern(const gs_color_space * pcs, gs_state * pgs)
{
return 0;
}
/* Adjust the reference counts for Pattern color spaces or colors. */
static void
gx_final_Pattern(const gs_color_space * pcs)
{
/* {csrc} really do nothing? */
}
static void
gx_adjust_color_Pattern(const gs_client_color * pcc,
const gs_color_space * pcs, int delta)
{
gs_pattern_instance_t *pinst = pcc->pattern;
rc_adjust_only(pinst, delta, "gx_adjust_color_Pattern");
if (pcs && pcs->params.pattern.has_base_space)
(pcs->base_space->type->adjust_color_count)
(pcc, pcs->base_space, delta);
}
/* GC procedures */
static
ENUM_PTRS_BEGIN_PROC(cs_Pattern_enum_ptrs)
{
return 0;
/* {csrc} may change to st_base_color_space */
}
ENUM_PTRS_END_PROC
static RELOC_PTRS_BEGIN(cs_Pattern_reloc_ptrs)
{
return;
}
RELOC_PTRS_END
/* ---------------- Serialization. -------------------------------- */
static int
gx_serialize_Pattern(const gs_color_space * pcs, stream * s)
{
const gs_pattern_params * p = &pcs->params.pattern;
uint n;
int code = gx_serialize_cspace_type(pcs, s);
if (code < 0)
return code;
code = sputs(s, (const byte *)&p->has_base_space, sizeof(p->has_base_space), &n);
if (code < 0)
return code;
if (!p->has_base_space)
return 0;
return cs_serialize(pcs->base_space, s);
}
|