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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4680 | right-hear | 1 | #include "fitz.h" |
| 2 | #include "mupdf.h" |
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| 3 | |||
| 4 | fz_error |
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| 5 | pdf_load_pattern(pdf_pattern **patp, pdf_xref *xref, fz_obj *dict) |
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| 6 | { |
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| 7 | fz_error error; |
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| 8 | pdf_pattern *pat; |
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| 9 | fz_obj *obj; |
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| 10 | |||
| 11 | if ((*patp = pdf_find_item(xref->store, pdf_drop_pattern, dict))) |
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| 12 | { |
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| 13 | pdf_keep_pattern(*patp); |
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| 14 | return fz_okay; |
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| 15 | } |
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| 16 | |||
| 17 | pat = fz_malloc(sizeof(pdf_pattern)); |
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| 18 | pat->refs = 1; |
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| 19 | pat->resources = NULL; |
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| 20 | pat->contents = NULL; |
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| 21 | |||
| 22 | /* Store pattern now, to avoid possible recursion if objects refer back to this one */ |
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| 23 | pdf_store_item(xref->store, pdf_keep_pattern, pdf_drop_pattern, dict, pat); |
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| 24 | |||
| 25 | pat->ismask = fz_to_int(fz_dict_gets(dict, "PaintType")) == 2; |
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| 26 | pat->xstep = fz_to_real(fz_dict_gets(dict, "XStep")); |
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| 27 | pat->ystep = fz_to_real(fz_dict_gets(dict, "YStep")); |
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| 28 | |||
| 29 | obj = fz_dict_gets(dict, "BBox"); |
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| 30 | pat->bbox = pdf_to_rect(obj); |
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| 31 | |||
| 32 | obj = fz_dict_gets(dict, "Matrix"); |
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| 33 | if (obj) |
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| 34 | pat->matrix = pdf_to_matrix(obj); |
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| 35 | else |
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| 36 | pat->matrix = fz_identity; |
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| 37 | |||
| 38 | pat->resources = fz_dict_gets(dict, "Resources"); |
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| 39 | if (pat->resources) |
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| 40 | fz_keep_obj(pat->resources); |
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| 41 | |||
| 42 | error = pdf_load_stream(&pat->contents, xref, fz_to_num(dict), fz_to_gen(dict)); |
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| 43 | if (error) |
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| 44 | { |
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| 45 | pdf_remove_item(xref->store, pdf_drop_pattern, dict); |
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| 46 | pdf_drop_pattern(pat); |
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| 47 | return fz_rethrow(error, "cannot load pattern stream (%d %d R)", fz_to_num(dict), fz_to_gen(dict)); |
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| 48 | } |
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| 49 | |||
| 50 | *patp = pat; |
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| 51 | return fz_okay; |
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| 52 | } |
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| 53 | |||
| 54 | pdf_pattern * |
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| 55 | pdf_keep_pattern(pdf_pattern *pat) |
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| 56 | { |
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| 57 | pat->refs ++; |
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| 58 | return pat; |
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| 59 | } |
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| 60 | |||
| 61 | void |
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| 62 | pdf_drop_pattern(pdf_pattern *pat) |
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| 63 | { |
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| 64 | if (pat && --pat->refs == 0) |
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| 65 | { |
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| 66 | if (pat->resources) |
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| 67 | fz_drop_obj(pat->resources); |
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| 68 | if (pat->contents) |
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| 69 | fz_drop_buffer(pat->contents); |
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| 70 | fz_free(pat); |
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| 71 | } |
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| 72 | } |