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campo-sirio/pdf/pdflib/p_color.c
guy 429faed747 Patch level : 10.0 
Files correlati     : pdflib
Ricompilazione Demo : [ ]
Commento            :
Aggiornata PDFlib


git-svn-id: svn://10.65.10.50/trunk@17433 c028cbd2-c16b-5b4b-a496-9718f37d4682
2008-10-20 14:35:00 +00:00

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/*---------------------------------------------------------------------------*
| PDFlib - A library for generating PDF on the fly |
+---------------------------------------------------------------------------+
| Copyright (c) 1997-2007 Thomas Merz and PDFlib GmbH. All rights reserved. |
+---------------------------------------------------------------------------+
| |
| This software is subject to the PDFlib license. It is NOT in the |
| public domain. Extended versions and commercial licenses are |
| available, please check http://www.pdflib.com. |
| |
*---------------------------------------------------------------------------*/
/* $Id: p_color.c,v 1.3 2008-10-20 14:34:15 guy Exp $
*
* PDFlib color routines
*
*/
#define P_COLOR_C
#include "p_intern.h"
#include "p_color.h"
static const pdc_keyconn pdf_colortype_keylist[] =
{
{"none", color_none},
{"gray", color_gray},
{"rgb", color_rgb},
{"cmyk", color_cmyk},
{"spotname", color_spotname},
{"spot", color_spot},
{"pattern", color_pattern},
{"iccbasedgray", color_iccbasedgray},
{"iccbasedrgb", color_iccbasedrgb},
{"iccbasedcmyk", color_iccbasedcmyk},
{"lab", color_lab},
{NULL, 0}
};
static const pdc_keyconn pdf_colorcomp_keylist[] =
{
{"none", 0},
{"gray", 1},
{"rgb", 3},
{"cmyk", 4},
{"spotname", 2},
{"spot", 2},
{"pattern", 1},
{"iccbasedgray", 1},
{"iccbasedrgb", 3},
{"iccbasedcmyk", 4},
{"lab", 3},
{NULL, 0}
};
/* ------------------------ color state ----------------------- */
struct pdf_cstate_s
{
pdf_color fill;
pdf_color stroke;
};
void
pdf_init_cstate(PDF *p)
{
static const char fn[] = "pdf_init_cstate";
pdf_cstate *cstate;
if (!p->curr_ppt->cstate)
{
p->curr_ppt->cstate = (pdf_cstate *) pdc_malloc(p->pdc,
PDF_MAX_SAVE_LEVEL * sizeof(pdf_cstate), fn);
}
cstate = &p->curr_ppt->cstate[p->curr_ppt->sl];
cstate->fill.cs = DeviceGray;
cstate->fill.val.gray = 0.0;
cstate->stroke.cs = DeviceGray;
cstate->stroke.val.gray = 0.0;
}
void
pdf_save_cstate(PDF *p)
{
pdf_ppt *ppt = p->curr_ppt;
int sl = ppt->sl;
memcpy(&ppt->cstate[sl + 1], &ppt->cstate[sl], sizeof(pdf_cstate));
}
pdf_color *
pdf_get_cstate(PDF *p, pdf_drawmode mode)
{
if (mode == pdf_fill)
return &p->curr_ppt->cstate[p->curr_ppt->sl].fill;
else
return &p->curr_ppt->cstate[p->curr_ppt->sl].stroke;
}
void
pdf_cleanup_page_cstate(PDF *p, pdf_ppt *ppt)
{
if (ppt->cstate != NULL)
pdc_free(p->pdc, ppt->cstate);
ppt->cstate = NULL;
}
/* Avoid wrong error messages due to rounding artifacts.
* This doesn't do any harm since we truncate to 5 decimal places anyway
* when producing PDF output.
*/
#define EPSILON ((1.0 + PDF_SMALLREAL))
static void pdf_check_color_values(PDF *p, pdf_colorspacetype type,
pdc_scalar c1, pdc_scalar c2, pdc_scalar c3, pdc_scalar c4);
static int
pdf_color_components(PDF *p, int slot)
{
static const char *fn = "pdf_color_components";
pdf_colorspace *cs;
int components = 0;
cs = &p->colorspaces[slot];
switch (cs->type) {
case DeviceGray:
case Indexed:
components = 1;
break;
case DeviceRGB:
components = 3;
break;
case DeviceCMYK:
components = 4;
break;
case PatternCS:
if (cs->val.pattern.base == pdc_undef)
components = 0; /* PaintType 1: colored pattern */
else
components = pdf_color_components(p, cs->val.pattern.base);
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn,
pdc_errprintf(p->pdc, "%d", slot),
pdc_errprintf(p->pdc, "%d", cs->type), 0);
}
return components;
} /* pdf_color_components */
static void
pdf_write_color_values(PDF *p, pdf_color *color, pdf_drawmode drawmode)
{
static const char *fn = "pdf_write_color_values";
pdf_colorspace * cs = &p->colorspaces[color->cs];
int cs_bias = p->curr_ppt->cs_bias;
int pt_bias = p->curr_ppt->pt_bias;
switch (cs->type)
{
case DeviceGray:
{
pdc_printf(p->out, "%f", color->val.gray);
if (drawmode == pdf_fill)
pdc_puts(p->out, " g\n");
else if (drawmode == pdf_stroke)
pdc_puts(p->out, " G\n");
break;
}
case DeviceRGB:
{
pdc_printf(p->out, "%f %f %f",
color->val.rgb.r, color->val.rgb.g, color->val.rgb.b);
if (drawmode == pdf_fill)
pdc_puts(p->out, " rg\n");
else if (drawmode == pdf_stroke)
pdc_puts(p->out, " RG\n");
break;
}
case DeviceCMYK:
{
pdc_printf(p->out, "%f %f %f %f",
color->val.cmyk.c, color->val.cmyk.m,
color->val.cmyk.y, color->val.cmyk.k);
if (drawmode == pdf_fill)
pdc_puts(p->out, " k\n");
else if (drawmode == pdf_stroke)
pdc_puts(p->out, " K\n");
break;
}
case PatternCS:
{
if (drawmode == pdf_fill)
{
if (p->pattern[color->val.pattern].painttype == 1)
{
pdc_puts(p->out, "/Pattern cs");
}
else if (p->pattern[color->val.pattern].painttype == 2)
{
pdf_color *fillcolor = pdf_get_cstate(p, pdf_fill);
pdc_printf(p->out, "/C%d cs ", cs_bias + color->cs);
pdf_write_color_values(p, fillcolor, pdf_none);
}
pdc_printf(p->out, "/P%d scn\n", pt_bias + color->val.pattern);
}
else if (drawmode == pdf_stroke)
{
if (p->pattern[color->val.pattern].painttype == 1)
{
pdc_puts(p->out, "/Pattern CS");
}
else if (p->pattern[color->val.pattern].painttype == 2)
{
pdf_color *strokecolor = pdf_get_cstate(p, pdf_stroke);
pdc_printf(p->out, "/C%d CS ", cs_bias + color->cs);
pdf_write_color_values(p, strokecolor, pdf_none);
}
pdc_printf(p->out, "/P%d SCN\n", pt_bias + color->val.pattern);
}
p->pattern[color->val.pattern].used_on_current_page = pdc_true;
break;
}
case Indexed: /* LATER */
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn,
pdc_errprintf(p->pdc, "%d", color->cs),
pdc_errprintf(p->pdc, "%d", cs->type), 0);
}
} /* pdf_write_color_values */
static pdc_bool
pdf_color_equal(PDF *p, pdf_color *c1, pdf_color *c2)
{
pdf_colorspace *cs1;
cs1 = &p->colorspaces[c1->cs];
if (c1->cs != c2->cs)
return pdc_false;
switch (cs1->type) {
case DeviceGray:
return (c1->val.gray == c2->val.gray);
break;
case DeviceRGB:
return (c1->val.rgb.r == c2->val.rgb.r &&
c1->val.rgb.g == c2->val.rgb.g &&
c1->val.rgb.b == c2->val.rgb.b);
break;
case DeviceCMYK:
return (c1->val.cmyk.c == c2->val.cmyk.c &&
c1->val.cmyk.m == c2->val.cmyk.m &&
c1->val.cmyk.y == c2->val.cmyk.y &&
c1->val.cmyk.k == c2->val.cmyk.k);
break;
case Indexed:
return (c1->val.idx == c2->val.idx);
break;
case PatternCS:
return (c1->val.pattern == c2->val.pattern);
break;
default:
break;
}
return pdc_true;
} /* pdf_color_equal */
static pdc_bool
pdf_colorspace_equal(PDF *p, pdf_colorspace *cs1, pdf_colorspace *cs2)
{
static const char *fn = "pdf_colorspace_equal";
if (cs1->type != cs2->type)
return pdc_false;
switch (cs1->type) {
case DeviceGray:
case DeviceRGB:
case DeviceCMYK:
return pdc_true;
break;
case Indexed:
return ((cs1->val.indexed.base == cs2->val.indexed.base) &&
(cs1->val.indexed.palette_size==cs2->val.indexed.palette_size)&&
(cs1->val.indexed.colormap_id != PDC_BAD_ID &&
cs1->val.indexed.colormap_id == cs2->val.indexed.colormap_id));
break;
case PatternCS:
return (cs1->val.pattern.base == cs2->val.pattern.base);
break;
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn, "(unknown)",
pdc_errprintf(p->pdc, "%d", cs1->type), 0);
}
return pdc_false;
} /* pdf_colorspace_equal */
static void
pdf_grow_colorspaces(PDF *p)
{
int i;
p->colorspaces = (pdf_colorspace *) pdc_realloc(p->pdc, p->colorspaces,
sizeof(pdf_colorspace) * 2 * p->colorspaces_capacity,
"pdf_grow_colorspaces");
for (i = p->colorspaces_capacity; i < 2 * p->colorspaces_capacity; i++) {
p->colorspaces[i].used_on_current_page = pdc_false;
}
p->colorspaces_capacity *= 2;
}
int
pdf_add_colorspace(PDF *p, pdf_colorspace *cs, pdc_bool inuse)
{
pdf_colorspace *cs_new;
static const char fn[] = "pdf_add_colorspace";
int slot;
for (slot = 0; slot < p->colorspaces_number; slot++)
{
if (pdf_colorspace_equal(p, &p->colorspaces[slot], cs))
{
if (inuse)
p->colorspaces[slot].used_on_current_page = pdc_true;
return slot;
}
}
slot = p->colorspaces_number;
if (p->colorspaces_number >= p->colorspaces_capacity)
pdf_grow_colorspaces(p);
cs_new = &p->colorspaces[slot];
cs_new->type = cs->type;
/* don't allocate id for simple color spaces, since we don't write these */
if (PDF_SIMPLE_COLORSPACE(cs)) {
cs_new->obj_id = PDC_BAD_ID;
cs_new->used_on_current_page = pdc_false;
} else {
cs_new->obj_id = pdc_alloc_id(p->out);
cs_new->used_on_current_page = inuse;
}
switch (cs_new->type) {
case DeviceGray:
case DeviceRGB:
case DeviceCMYK:
break;
case Indexed:
{
size_t palsize; /* palette size in bytes */
palsize = cs->val.indexed.palette_size *
pdf_color_components(p, cs->val.indexed.base);
cs_new->val.indexed.base = cs->val.indexed.base;
cs_new->val.indexed.palette_size = cs->val.indexed.palette_size;
cs_new->val.indexed.colormap_id = pdc_alloc_id(p->out);
cs_new->val.indexed.colormap =
(pdf_colormap *) pdc_malloc(p->pdc, palsize, fn);
memcpy(cs_new->val.indexed.colormap, cs->val.indexed.colormap, palsize);
cs_new->val.indexed.colormap_done = pdc_false;
break;
case PatternCS:
cs_new->val.pattern.base = cs->val.pattern.base;
break;
}
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn,
pdc_errprintf(p->pdc, "%d", slot),
pdc_errprintf(p->pdc, "%d", cs_new->type), 0);
}
p->colorspaces_number++;
return slot;
} /* pdf_add_colorspace */
static void
pdf_set_color_values(PDF *p, pdf_color *cfill, pdf_color *cstroke,
pdf_drawmode drawmode)
{
pdf_colorspace *cs;
if (drawmode == pdf_stroke || drawmode == pdf_fillstroke)
{
pdf_color *strokecolor = pdf_get_cstate(p, pdf_stroke);
if (!pdf_color_equal(p, strokecolor, cstroke) || PDF_FORCE_OUTPUT())
{
if (PDF_GET_STATE(p) != pdf_state_document)
pdf_write_color_values(p, cstroke, pdf_stroke);
*strokecolor = *cstroke;
}
cs = &p->colorspaces[cstroke->cs];
if (!PDF_SIMPLE_COLORSPACE(cs))
cs->used_on_current_page = pdc_true;
}
if (drawmode == pdf_fill || drawmode == pdf_fillstroke)
{
pdf_color *fillcolor = pdf_get_cstate(p, pdf_fill);
if (!pdf_color_equal(p, fillcolor, cfill) || PDF_FORCE_OUTPUT())
{
if (PDF_GET_STATE(p) != pdf_state_document)
pdf_write_color_values(p, cfill, pdf_fill);
*fillcolor = *cfill;
}
cs = &p->colorspaces[cfill->cs];
if (!PDF_SIMPLE_COLORSPACE(cs))
cs->used_on_current_page = pdc_true;
}
} /* pdf_set_color_values */
void
pdf_init_colorspaces(PDF *p)
{
int i, slot;
pdf_colorspace cs;
p->colorspaces_number = 0;
p->colorspaces_capacity = COLORSPACES_CHUNKSIZE;
p->colorspaces = (pdf_colorspace *)
pdc_malloc(p->pdc, sizeof(pdf_colorspace) * p->colorspaces_capacity,
"pdf_init_colorspaces");
for (i = 0; i < p->colorspaces_capacity; i++) {
p->colorspaces[i].used_on_current_page = pdc_false;
}
/*
* Initialize a few slots with simple color spaces for easier use.
* These can be used without further ado: the slot number is identical
* to the enum value due to the ordering below.
*/
cs.type = DeviceGray;
slot = pdf_add_colorspace(p, &cs, pdc_false);
cs.type = DeviceRGB;
slot = pdf_add_colorspace(p, &cs, pdc_false);
cs.type = DeviceCMYK;
slot = pdf_add_colorspace(p, &cs, pdc_false);
} /* pdf_init_colorspaces */
void
pdf_write_page_colorspaces(PDF *p)
{
int i, total = 0;
int bias = p->curr_ppt->cs_bias;
for (i = 0; i < p->colorspaces_number; i++)
if (p->colorspaces[i].used_on_current_page)
total++;
if (total > 0 || bias
)
{
pdc_puts(p->out, "/ColorSpace");
pdc_begin_dict(p->out);
if (total > 0)
{
for (i = 0; i < p->colorspaces_number; i++)
{
pdf_colorspace *cs = &p->colorspaces[i];
if (cs->used_on_current_page)
{
cs->used_on_current_page = pdc_false; /* reset */
/* don't write simple color spaces as resource */
if (!PDF_SIMPLE_COLORSPACE(cs))
{
pdc_printf(p->out, "/C%d", bias + i);
pdc_objref(p->out, "", cs->obj_id);
}
}
}
}
if (!bias)
pdc_end_dict(p->out); /* color space names */
}
} /* pdf_write_page_colorspaces */
void
pdf_get_page_colorspaces(PDF *p, pdf_reslist *rl)
{
int i;
for (i = 0; i < p->colorspaces_number; i++)
{
pdf_colorspace *cs = &p->colorspaces[i];
if (cs->used_on_current_page)
{
cs->used_on_current_page = pdc_false;
if (!PDF_SIMPLE_COLORSPACE(cs))
pdf_add_reslist(p, rl, i);
}
}
}
void
pdf_mark_page_colorspace(PDF *p, int n)
{
p->colorspaces[n].used_on_current_page = pdc_true;
}
void
pdf_write_function_dict(PDF *p, pdf_color *c0, pdf_color *c1, pdc_scalar N)
{
static const char *fn = "pdf_write_function_dict";
pdf_colorspace *cs;
cs = &p->colorspaces[c1->cs];
pdc_begin_dict(p->out); /* function dict */
pdc_puts(p->out, "/FunctionType 2\n");
pdc_puts(p->out, "/Domain[0 1]\n");
pdc_printf(p->out, "/N %f\n", N);
switch (cs->type) {
case DeviceGray:
pdc_puts(p->out, "/Range[0 1]\n");
if (c0->val.gray != 0) pdc_printf(p->out, "/C0[%f]\n", c0->val.gray);
if (c1->val.gray != 1) pdc_printf(p->out, "/C1[%f]", c1->val.gray);
break;
case DeviceRGB:
pdc_puts(p->out, "/Range[0 1 0 1 0 1]\n");
pdc_printf(p->out, "/C0[%f %f %f]\n",
c0->val.rgb.r, c0->val.rgb.g, c0->val.rgb.b);
pdc_printf(p->out, "/C1[%f %f %f]",
c1->val.rgb.r, c1->val.rgb.g, c1->val.rgb.b);
break;
case DeviceCMYK:
pdc_puts(p->out, "/Range[0 1 0 1 0 1 0 1]\n");
pdc_printf(p->out, "/C0[%f %f %f %f]\n",
c0->val.cmyk.c, c0->val.cmyk.m, c0->val.cmyk.y, c0->val.cmyk.k);
pdc_printf(p->out, "/C1[%f %f %f %f]",
c1->val.cmyk.c, c1->val.cmyk.m, c1->val.cmyk.y, c1->val.cmyk.k);
break;
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn, "(unknown)",
pdc_errprintf(p->pdc, "%d", cs->type), 0);
}
pdc_end_dict_c(p->out); /* function dict */
} /* pdf_write_function_dict */
void
pdf_write_colormap(PDF *p, int slot)
{
PDF_data_source src;
pdf_colorspace *cs, *base;
pdc_id length_id;
cs = &p->colorspaces[slot];
if (cs->type != Indexed || cs->val.indexed.colormap_done == pdc_true)
return;
base = &p->colorspaces[cs->val.indexed.base];
pdc_begin_obj(p->out, cs->val.indexed.colormap_id); /* colormap object */
pdc_begin_dict(p->out);
if (pdc_get_compresslevel(p->out))
pdc_puts(p->out, "/Filter/FlateDecode\n");
/* Length of colormap object */
length_id = pdc_alloc_id(p->out);
pdc_objref(p->out, "/Length", length_id);
pdc_end_dict(p->out);
src.init = NULL;
src.fill = pdf_data_source_buf_fill;
src.terminate = NULL;
src.buffer_start = (unsigned char *) cs->val.indexed.colormap;
src.buffer_length = (size_t) (cs->val.indexed.palette_size *
pdf_color_components(p, cs->val.indexed.base));
src.bytes_available = 0;
src.next_byte = NULL;
/* Write colormap data */
pdf_copy_stream(p, &src, pdc_true); /* colormap data */
pdc_end_obj(p->out); /* colormap object */
pdc_put_pdfstreamlength(p->out, length_id);
/* free the colormap now that it's written */
pdc_free(p->pdc, cs->val.indexed.colormap);
cs->val.indexed.colormap = NULL;
cs->val.indexed.colormap_done = pdc_true;
} /* pdf_write_colormap */
void
pdf_write_colorspace(PDF *p, int slot, pdc_bool direct)
{
static const char *fn = "pdf_write_colorspace";
pdf_colorspace *cs;
int base;
if (slot < 0 || slot >= p->colorspaces_number)
pdc_error(p->pdc, PDF_E_INT_BADCS, fn,
pdc_errprintf(p->pdc, "%d", slot),
"(unknown)", 0);
cs = &p->colorspaces[slot];
/* we always write simple colorspaces directly */
if (PDF_SIMPLE_COLORSPACE(cs))
direct = pdc_true;
if (!direct) {
pdc_objref_c(p->out, cs->obj_id);
return;
}
switch (cs->type) {
case DeviceGray:
pdc_printf(p->out, "/DeviceGray");
break;
case DeviceRGB:
pdc_printf(p->out, "/DeviceRGB");
break;
case DeviceCMYK:
pdc_printf(p->out, "/DeviceCMYK");
break;
case Indexed:
base = cs->val.indexed.base;
pdc_begin_array(p->out);
pdc_puts(p->out, "/Indexed");
pdf_write_colorspace(p, base, pdc_false);
pdc_printf(p->out, " %d", cs->val.indexed.palette_size - 1);
pdc_objref_c(p->out, cs->val.indexed.colormap_id);
pdc_end_array_c(p->out);
break;
case PatternCS:
pdc_begin_array(p->out);
pdc_printf(p->out, "/Pattern");
pdf_write_colorspace(p, cs->val.pattern.base, pdc_false);
pdc_end_array(p->out);
break;
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn,
pdc_errprintf(p->pdc, "%d", slot),
pdc_errprintf(p->pdc, "%d", cs->type), 0);
}
} /* pdf_write_colorspace */
void
pdf_write_doc_colorspaces(PDF *p)
{
int i;
for (i = 0; i < p->colorspaces_number; i++) {
pdf_colorspace *cs = &p->colorspaces[i];
/* don't write simple color spaces as resource */
if (PDF_SIMPLE_COLORSPACE(cs))
continue;
pdc_begin_obj(p->out, cs->obj_id);
pdf_write_colorspace(p, i, pdc_true);
pdc_puts(p->out, "\n");
pdc_end_obj(p->out); /* color space resource */
pdf_write_colormap(p, i); /* write pending colormaps */
}
}
void
pdf_cleanup_colorspaces(PDF *p)
{
static const char *fn = "pdf_cleanup_colorspaces";
int i;
if (!p->colorspaces)
return;
for (i = 0; i < p->colorspaces_number; i++) {
pdf_colorspace *cs = &p->colorspaces[i];;
switch (cs->type) {
case DeviceGray:
case DeviceRGB:
case DeviceCMYK:
case PatternCS:
break;
case Indexed:
if (cs->val.indexed.colormap)
pdc_free(p->pdc, cs->val.indexed.colormap);
break;
default:
pdc_error(p->pdc, PDF_E_INT_BADCS, fn,
pdc_errprintf(p->pdc, "%d", i),
pdc_errprintf(p->pdc, "%d", cs->type), 0);
}
}
pdc_free(p->pdc, p->colorspaces);
p->colorspaces = NULL;
}
static void
pdf_check_color_values(
PDF *p,
pdf_colorspacetype type,
pdc_scalar c1, pdc_scalar c2, pdc_scalar c3, pdc_scalar c4)
{
switch (type) {
case DeviceGray:
pdc_check_number_limits(p->pdc, "c1", c1, 0.0, EPSILON);
break;
case DeviceRGB:
pdc_check_number_limits(p->pdc, "c1", c1, 0.0, EPSILON);
pdc_check_number_limits(p->pdc, "c2", c2, 0.0, EPSILON);
pdc_check_number_limits(p->pdc, "c3", c3, 0.0, EPSILON);
break;
case DeviceCMYK:
pdc_check_number_limits(p->pdc, "c1", c1, 0.0, EPSILON);
pdc_check_number_limits(p->pdc, "c2", c2, 0.0, EPSILON);
pdc_check_number_limits(p->pdc, "c3", c3, 0.0, EPSILON);
pdc_check_number_limits(p->pdc, "c4", c4, 0.0, EPSILON);
break;
case PatternCS:
pdf_check_handle(p, (int) c1, pdc_patternhandle);
if (c1 == p->pattern_number - 1 && PDF_GET_STATE(p) & pdf_state_pattern)
{
pdc_error(p->pdc, PDF_E_PATTERN_SELF, 0, 0, 0, 0);
}
break;
case Separation:
pdf_check_handle(p, (int) c1, pdc_colorhandle);
pdc_check_number_limits(p->pdc, "c2", c2, 0.0, EPSILON);
break;
case Indexed:
default:
break;
}
} /* pdf_check_color_values */
static void
pdf_setcolor_internal(PDF *p, int drawmode, int colortype,
pdc_scalar c1, pdc_scalar c2, pdc_scalar c3, pdc_scalar c4,
pdf_color *fcolor)
{
pdf_color c, cstroke;
pdf_colorspace cs;
if (PDF_GET_STATE(p) == pdf_state_pattern &&
pdf_get_shading_painttype(p) == 2)
{
pdc_error(p->pdc, PDF_E_COLOR_INVALSPEC, 0, 0, 0, 0);
}
/* TODO: synchronize the PDF/X checks below with pdf_check_pdfx_colorspaces
*/
switch (colortype)
{
case color_gray:
cs.type = DeviceGray;
c.cs = cs.type;
c.val.gray = c1;
pdf_check_color_values(p, cs.type, c1, c2, c3, c4);
break;
case color_rgb:
cs.type = DeviceRGB;
c.cs = cs.type;
c.val.rgb.r = c1;
c.val.rgb.g = c2;
c.val.rgb.b = c3;
pdf_check_color_values(p, cs.type, c1, c2, c3, c4);
break;
case color_cmyk:
cs.type = DeviceCMYK;
c.cs = cs.type;
c.val.cmyk.c = c1;
c.val.cmyk.m = c2;
c.val.cmyk.y = c3;
c.val.cmyk.k = c4;
pdf_check_color_values(p, cs.type, c1, c2, c3, c4);
break;
case color_spotname:
case color_spot:
pdc_error(p->pdc, PDF_E_UNSUPP_SPOTCOLOR, 0, 0, 0, 0);
break;
case color_pattern:
cs.type = PatternCS;
if (p->pdc->hastobepos) c1 -= 1;
c.val.pattern = (int) c1;
pdf_check_color_values(p, cs.type, c1, c2, c3, c4);
if (p->pattern[c.val.pattern].painttype == 1)
{
cs.val.pattern.base = pdc_undef;
c.cs = pdf_add_colorspace(p, &cs, pdc_false);
cstroke = c;
}
else if (p->pattern[c.val.pattern].painttype == 2)
{
if (drawmode == pdf_stroke || drawmode == pdf_fillstroke)
{
pdf_color *strokecolor = pdf_get_cstate(p, pdf_stroke);
if (p->colorspaces[strokecolor->cs].type == PatternCS)
pdc_error(p->pdc, PDF_E_COLOR_INVALPATT, 0, 0, 0, 0);
cstroke.val.pattern = (int) c1;
cs.val.pattern.base = strokecolor->cs;
cstroke.cs = pdf_add_colorspace(p, &cs, pdc_true);
}
if (drawmode == pdf_fill || drawmode == pdf_fillstroke)
{
pdf_color *fillcolor = pdf_get_cstate(p, pdf_fill);
if (p->colorspaces[fillcolor->cs].type == PatternCS)
pdc_error(p->pdc, PDF_E_COLOR_INVALPATT, 0, 0, 0, 0);
cs.val.pattern.base = fillcolor->cs;
c.cs = pdf_add_colorspace(p, &cs, pdc_true);
}
}
break;
case color_iccbasedgray:
case color_iccbasedrgb:
case color_iccbasedcmyk:
case color_lab:
pdc_error(p->pdc, PDF_E_UNSUPP_ICCBASEDCOLOR, 0, 0, 0, 0);
break;
}
if (fcolor == NULL)
{
if (colortype != color_pattern)
cstroke = c;
pdf_set_color_values(p, &c, &cstroke, (pdf_drawmode) drawmode);
}
else
{
*fcolor = c;
}
}
static const pdc_keyconn pdf_fstype_keylist[] =
{
{"stroke", pdf_stroke},
{"fill", pdf_fill},
{"fillstroke", pdf_stroke | pdf_fill},
{"both", pdf_stroke | pdf_fill},
{NULL, 0}
};
void
pdf__setcolor(
PDF *p,
const char *fstype,
const char *colorspace,
pdc_scalar c1, pdc_scalar c2, pdc_scalar c3, pdc_scalar c4)
{
int drawmode = (int) pdf_none;
int colortype;
if (!fstype || !*fstype)
pdc_error(p->pdc, PDC_E_ILLARG_EMPTY, "fstype", 0, 0, 0);
if (!colorspace || !*colorspace)
pdc_error(p->pdc, PDC_E_ILLARG_EMPTY, "colorspace", 0, 0, 0);
drawmode = pdc_get_keycode_ci(fstype, pdf_fstype_keylist);
if (drawmode == PDC_KEY_NOTFOUND)
pdc_error(p->pdc, PDC_E_ILLARG_STRING, "fstype", fstype, 0, 0);
colortype = pdc_get_keycode_ci(colorspace, pdf_colortype_keylist);
if (colortype == PDC_KEY_NOTFOUND)
pdc_error(p->pdc, PDC_E_ILLARG_STRING, "colorspace", colorspace, 0, 0);
pdf_setcolor_internal(p, drawmode, colortype, c1, c2, c3, c4, NULL);
}
void
pdf_set_default_color(PDF *p, pdc_bool reset)
{
if (reset)
pdf__setcolor(p, "fillstroke", "gray", 0, 0, 0, 0);
}
void
pdf_parse_coloropt(PDF *p, const char *optname, char **optvalue, int ns,
int maxtype, pdf_coloropt *c)
{
int errcode = 0;
const char *stemp = NULL;
if (ns)
{
int i, j, n, iz = 0;
double dz;
c->type = pdc_get_keycode_ci(optvalue[0], pdf_colortype_keylist);
if (c->type == PDC_KEY_NOTFOUND || c->type > maxtype)
{
stemp = pdc_errprintf(p->pdc,
"%.*s", PDC_ERR_MAXSTRLEN, optvalue[0]);
errcode = PDC_E_OPT_ILLKEYWORD;
goto PDF_COLOPT_ERROR;
}
if (c->type == (int) color_spotname || c->type == (int) color_spot)
{
errcode = PDF_E_UNSUPP_SPOTCOLOR;
goto PDF_COLOPT_ERROR;
}
n = 1 + pdc_get_keycode_ci(optvalue[0], pdf_colorcomp_keylist);
if (n != ns)
{
if (c->type == (int) color_spotname)
n++;
if (n != ns)
{
stemp = pdc_errprintf(p->pdc, "%d", n);
errcode = n < ns ? PDC_E_OPT_TOOMANYVALUES :
PDC_E_OPT_TOOFEWVALUES;
goto PDF_COLOPT_ERROR;
}
}
for (i = 0; i < 4; i++)
{
j = i + 1;
if (i >= ns - 1)
{
if (!i || c->type != (int) color_gray)
c->value[i] = 0.0;
else
c->value[i] = c->value[0];
}
else
{
if (!i && (c->type >= (int) color_spotname &&
c->type <= (int) color_pattern))
{
c->name[0] =0;
if (pdc_str2integer(optvalue[j], 0, (pdc_sint32 *) &iz) ==
pdc_false)
{
{
stemp = pdc_errprintf(p->pdc, "%.*s",
PDC_ERR_MAXSTRLEN, optvalue[j]);
errcode = PDC_E_OPT_ILLNUMBER;
goto PDF_COLOPT_ERROR;
}
}
c->value[i] = iz;
}
else
{
if (pdc_str2double(optvalue[j], &dz) == pdc_false)
{
stemp = pdc_errprintf(p->pdc, "%.*s",
PDC_ERR_MAXSTRLEN, optvalue[j]);
errcode = PDC_E_OPT_ILLNUMBER;
goto PDF_COLOPT_ERROR;
}
else
c->value[i] = dz;
}
}
}
if (c->type <= (int) color_cmyk)
{
for (i = 0; i < ns - 1; i++)
{
if (c->value[i] < 0 || c->value[i] > EPSILON)
{
stemp = pdc_errprintf(p->pdc, "%f", c->value[i]);
errcode = PDC_E_OPT_ILLNUMBER;
goto PDF_COLOPT_ERROR;
}
}
}
}
PDF_COLOPT_ERROR:
if (errcode)
pdc_error(p->pdc, errcode, optname, stemp, 0, 0);
}
void
pdf_set_coloropt(PDF *p, int drawmode, pdf_coloropt *c)
{
if (c->type == (int) color_none)
return;
if (c->type == (int) color_spotname)
{
pdc_error(p->pdc, PDF_E_UNSUPP_SPOTCOLOR, 0, 0, 0, 0);
}
pdf_setcolor_internal(p, drawmode, c->type,
c->value[0], c->value[1], c->value[2], c->value[3],
NULL);
}
void
pdf_init_coloropt(PDF *p, pdf_coloropt *c)
{
(void) p;
{
c->name[0] = 0;
c->type = (int) color_gray;
c->value[0] = 0;
c->value[1] = 0;
c->value[2] = 0;
c->value[3] = 0;
}
}
void
pdf_logg_coloropt(PDF *p, pdf_coloropt *c, pdc_bool newline)
{
const char *keyword =
pdc_get_keyword((int) c->type, pdf_colortype_keylist);
pdc_logg(p->pdc, "{%s ", keyword);
switch (c->type)
{
case color_gray:
case color_iccbasedgray:
case color_pattern:
case color_spot:
pdc_logg(p->pdc, "%g}", c->value[0]);
break;
case color_rgb:
case color_iccbasedrgb:
case color_lab:
pdc_logg(p->pdc, "%g %g %g}", c->value[0], c->value[1], c->value[2]);
break;
case color_cmyk:
case color_iccbasedcmyk:
pdc_logg(p->pdc, "%g %g %g %g}", c->value[0], c->value[1],
c->value[2], c->value[3]);
break;
case color_spotname:
pdc_logg(p->pdc, "{%s} %g}", c->name, c->value[0]);
break;
default:
pdc_logg(p->pdc, "}");
break;
}
if (newline)
pdc_logg(p->pdc, "\n");
}
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