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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_xobject(pdf_xobject **formp, 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_xobject *form; |
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| 9 | fz_obj *obj; |
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| 10 | |||
| 11 | if ((*formp = pdf_find_item(xref->store, pdf_drop_xobject, dict))) |
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| 12 | { |
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| 13 | pdf_keep_xobject(*formp); |
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| 14 | return fz_okay; |
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| 15 | } |
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| 16 | |||
| 17 | form = fz_malloc(sizeof(pdf_xobject)); |
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| 18 | form->refs = 1; |
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| 19 | form->resources = NULL; |
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| 20 | form->contents = NULL; |
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| 21 | form->colorspace = NULL; |
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| 22 | |||
| 23 | /* Store item immediately, to avoid possible recursion if objects refer back to this one */ |
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| 24 | pdf_store_item(xref->store, pdf_keep_xobject, pdf_drop_xobject, dict, form); |
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| 25 | |||
| 26 | obj = fz_dict_gets(dict, "BBox"); |
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| 27 | form->bbox = pdf_to_rect(obj); |
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| 28 | |||
| 29 | obj = fz_dict_gets(dict, "Matrix"); |
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| 30 | if (obj) |
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| 31 | form->matrix = pdf_to_matrix(obj); |
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| 32 | else |
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| 33 | form->matrix = fz_identity; |
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| 34 | |||
| 35 | form->isolated = 0; |
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| 36 | form->knockout = 0; |
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| 37 | form->transparency = 0; |
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| 38 | |||
| 39 | obj = fz_dict_gets(dict, "Group"); |
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| 40 | if (obj) |
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| 41 | { |
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| 42 | fz_obj *attrs = obj; |
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| 43 | |||
| 44 | form->isolated = fz_to_bool(fz_dict_gets(attrs, "I")); |
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| 45 | form->knockout = fz_to_bool(fz_dict_gets(attrs, "K")); |
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| 46 | |||
| 47 | obj = fz_dict_gets(attrs, "S"); |
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| 48 | if (fz_is_name(obj) && !strcmp(fz_to_name(obj), "Transparency")) |
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| 49 | form->transparency = 1; |
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| 50 | |||
| 51 | obj = fz_dict_gets(attrs, "CS"); |
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| 52 | if (obj) |
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| 53 | { |
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| 54 | error = pdf_load_colorspace(&form->colorspace, xref, obj); |
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| 55 | if (error) |
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| 56 | fz_catch(error, "cannot load xobject colorspace"); |
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| 57 | } |
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| 58 | } |
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| 59 | |||
| 60 | form->resources = fz_dict_gets(dict, "Resources"); |
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| 61 | if (form->resources) |
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| 62 | fz_keep_obj(form->resources); |
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| 63 | |||
| 64 | error = pdf_load_stream(&form->contents, xref, fz_to_num(dict), fz_to_gen(dict)); |
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| 65 | if (error) |
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| 66 | { |
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| 67 | pdf_remove_item(xref->store, pdf_drop_xobject, dict); |
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| 68 | pdf_drop_xobject(form); |
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| 69 | return fz_rethrow(error, "cannot load xobject content stream (%d %d R)", fz_to_num(dict), fz_to_gen(dict)); |
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| 70 | } |
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| 71 | |||
| 72 | *formp = form; |
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| 73 | return fz_okay; |
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| 74 | } |
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| 75 | |||
| 76 | pdf_xobject * |
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| 77 | pdf_keep_xobject(pdf_xobject *xobj) |
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| 78 | { |
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| 79 | xobj->refs ++; |
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| 80 | return xobj; |
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| 81 | } |
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| 82 | |||
| 83 | void |
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| 84 | pdf_drop_xobject(pdf_xobject *xobj) |
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| 85 | { |
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| 86 | if (xobj && --xobj->refs == 0) |
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| 87 | { |
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| 88 | if (xobj->colorspace) |
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| 89 | fz_drop_colorspace(xobj->colorspace); |
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| 90 | if (xobj->resources) |
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| 91 | fz_drop_obj(xobj->resources); |
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| 92 | if (xobj->contents) |
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| 93 | fz_drop_buffer(xobj->contents); |
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| 94 | fz_free(xobj); |
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| 95 | } |
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| 96 | } |