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#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);
}
}
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