73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
#include "fitz.h"
|
|
#include "mupdf.h"
|
|
|
|
fz_error
|
|
pdf_load_pattern(pdf_pattern **patp, pdf_xref *xref, fz_obj *dict)
|
|
{
|
|
fz_error error;
|
|
pdf_pattern *pat;
|
|
fz_obj *obj;
|
|
|
|
if ((*patp = pdf_find_item(xref->store, pdf_drop_pattern, dict)))
|
|
{
|
|
pdf_keep_pattern(*patp);
|
|
return fz_okay;
|
|
}
|
|
|
|
pat = fz_malloc(sizeof(pdf_pattern));
|
|
pat->refs = 1;
|
|
pat->resources = NULL;
|
|
pat->contents = NULL;
|
|
|
|
/* Store pattern now, to avoid possible recursion if objects refer back to this one */
|
|
pdf_store_item(xref->store, pdf_keep_pattern, pdf_drop_pattern, dict, pat);
|
|
|
|
pat->ismask = fz_to_int(fz_dict_gets(dict, "PaintType")) == 2;
|
|
pat->xstep = fz_to_real(fz_dict_gets(dict, "XStep"));
|
|
pat->ystep = fz_to_real(fz_dict_gets(dict, "YStep"));
|
|
|
|
obj = fz_dict_gets(dict, "BBox");
|
|
pat->bbox = pdf_to_rect(obj);
|
|
|
|
obj = fz_dict_gets(dict, "Matrix");
|
|
if (obj)
|
|
pat->matrix = pdf_to_matrix(obj);
|
|
else
|
|
pat->matrix = fz_identity;
|
|
|
|
pat->resources = fz_dict_gets(dict, "Resources");
|
|
if (pat->resources)
|
|
fz_keep_obj(pat->resources);
|
|
|
|
error = pdf_load_stream(&pat->contents, xref, fz_to_num(dict), fz_to_gen(dict));
|
|
if (error)
|
|
{
|
|
pdf_remove_item(xref->store, pdf_drop_pattern, dict);
|
|
pdf_drop_pattern(pat);
|
|
return fz_rethrow(error, "cannot load pattern stream (%d %d R)", fz_to_num(dict), fz_to_gen(dict));
|
|
}
|
|
|
|
*patp = pat;
|
|
return fz_okay;
|
|
}
|
|
|
|
pdf_pattern *
|
|
pdf_keep_pattern(pdf_pattern *pat)
|
|
{
|
|
pat->refs ++;
|
|
return pat;
|
|
}
|
|
|
|
void
|
|
pdf_drop_pattern(pdf_pattern *pat)
|
|
{
|
|
if (pat && --pat->refs == 0)
|
|
{
|
|
if (pat->resources)
|
|
fz_drop_obj(pat->resources);
|
|
if (pat->contents)
|
|
fz_drop_buffer(pat->contents);
|
|
fz_free(pat);
|
|
}
|
|
}
|