diff options
Diffstat (limited to 'source/pdf/pdf-form.c')
| -rw-r--r-- | source/pdf/pdf-form.c | 67 |
1 files changed, 53 insertions, 14 deletions
diff --git a/source/pdf/pdf-form.c b/source/pdf/pdf-form.c index a6ea16c3..c08ecd4e 100644 --- a/source/pdf/pdf-form.c +++ b/source/pdf/pdf-form.c @@ -1,19 +1,5 @@ #include "mupdf/pdf.h" -enum -{ - F_Invisible = 1 << (1-1), - F_Hidden = 1 << (2-1), - F_Print = 1 << (3-1), - F_NoZoom = 1 << (4-1), - F_NoRotate = 1 << (5-1), - F_NoView = 1 << (6-1), - F_ReadOnly = 1 << (7-1), - F_Locked = 1 << (8-1), - F_ToggleNoView = 1 << (9-1), - F_LockedContents = 1 << (10-1) -}; - /* Must be kept in sync with definitions in pdf_util.js */ enum { @@ -23,6 +9,12 @@ enum Display_NoView }; +enum +{ + SigFlag_SignaturesExist = 1, + SigFlag_AppendOnly = 2 +}; + static char *get_string_or_stream(pdf_document *doc, pdf_obj *obj) { fz_context *ctx = doc->ctx; @@ -924,6 +916,53 @@ pdf_widget *pdf_next_widget(pdf_widget *previous) return (pdf_widget *)annot; } +pdf_widget *pdf_create_widget(pdf_document *doc, pdf_page *page, int type, char *fieldname) +{ + fz_context *ctx = doc->ctx; + pdf_obj *form = NULL; + int old_sigflags = pdf_to_int(pdf_dict_getp(pdf_trailer(doc), "Root/AcroForm/SigFlags")); + pdf_annot *annot = pdf_create_annot(doc, page, FZ_ANNOT_WIDGET); + + fz_try(ctx) + { + pdf_set_field_type(doc, annot->obj, type); + pdf_dict_puts_drop(annot->obj, "T", pdf_new_string(doc, fieldname, strlen(fieldname))); + annot->widget_type = type; + + if (type == PDF_WIDGET_TYPE_SIGNATURE) + { + int sigflags = (old_sigflags | (SigFlag_SignaturesExist|SigFlag_AppendOnly)); + pdf_dict_putp_drop(pdf_trailer(doc), "Root/AcroForm/SigFlags", pdf_new_int(doc, sigflags)); + } + + /* + pdf_create_annot will have linked the new widget into the page's + annot array. We also need it linked into the document's form + */ + form = pdf_dict_getp(pdf_trailer(doc), "Root/AcroForm/Fields"); + if (!form) + { + form = pdf_new_array(doc, 1); + pdf_dict_putp_drop(pdf_trailer(doc), "Root/AcroForm/Fields", form); + } + + pdf_array_push(form, annot->obj); /* Cleanup relies on this statement being last */ + } + fz_catch(ctx) + { + pdf_delete_annot(doc, page, annot); + + /* An empty Fields array may have been created, but that is harmless */ + + if (type == PDF_WIDGET_TYPE_SIGNATURE) + pdf_dict_putp_drop(pdf_trailer(doc), "Root/AcroForm/SigFlags", pdf_new_int(doc, old_sigflags)); + + fz_rethrow(ctx); + } + + return (pdf_widget *)annot; +} + int pdf_widget_get_type(pdf_widget *widget) { pdf_annot *annot = (pdf_annot *)widget; |