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#include "mupdf/pdf.h"
pdf_pattern *
pdf_keep_pattern(fz_context *ctx, pdf_pattern *pat)
{
return fz_keep_storable(ctx, &pat->storable);
}
void
pdf_drop_pattern(fz_context *ctx, pdf_pattern *pat)
{
fz_drop_storable(ctx, &pat->storable);
}
static void
pdf_drop_pattern_imp(fz_context *ctx, fz_storable *pat_)
{
pdf_pattern *pat = (pdf_pattern *)pat_;
pdf_drop_obj(ctx, pat->resources);
pdf_drop_obj(ctx, pat->contents);
fz_free(ctx, pat);
}
static unsigned int
pdf_pattern_size(pdf_pattern *pat)
{
if (pat == NULL)
return 0;
return sizeof(*pat);
}
pdf_pattern *
pdf_load_pattern(fz_context *ctx, pdf_document *doc, pdf_obj *dict)
{
pdf_pattern *pat;
pdf_obj *obj;
if ((pat = pdf_find_item(ctx, pdf_drop_pattern_imp, dict)) != NULL)
{
return pat;
}
pat = fz_malloc_struct(ctx, pdf_pattern);
FZ_INIT_STORABLE(pat, 1, pdf_drop_pattern_imp);
pat->document = doc;
pat->resources = NULL;
pat->contents = NULL;
fz_try(ctx)
{
/* Store pattern now, to avoid possible recursion if objects refer back to this one */
pdf_store_item(ctx, dict, pat, pdf_pattern_size(pat));
pat->ismask = pdf_to_int(ctx, pdf_dict_get(ctx, dict, PDF_NAME_PaintType)) == 2;
pat->xstep = pdf_to_real(ctx, pdf_dict_get(ctx, dict, PDF_NAME_XStep));
pat->ystep = pdf_to_real(ctx, pdf_dict_get(ctx, dict, PDF_NAME_YStep));
obj = pdf_dict_gets(ctx, dict, "BBox");
pdf_to_rect(ctx, obj, &pat->bbox);
obj = pdf_dict_gets(ctx, dict, "Matrix");
if (obj)
pdf_to_matrix(ctx, obj, &pat->matrix);
else
pat->matrix = fz_identity;
pat->resources = pdf_dict_get(ctx, dict, PDF_NAME_Resources);
if (pat->resources)
pdf_keep_obj(ctx, pat->resources);
pat->contents = pdf_keep_obj(ctx, dict);
}
fz_catch(ctx)
{
pdf_remove_item(ctx, pdf_drop_pattern_imp, dict);
pdf_drop_pattern(ctx, pat);
fz_rethrow(ctx);
}
return pat;
}
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