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