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#include "mupdf/pdf.h"
pdf_obj *pdf_get_inheritable(pdf_document *doc, pdf_obj *obj, char *key)
{
pdf_obj *fobj = NULL;
while (!fobj && obj)
{
fobj = pdf_dict_gets(obj, key);
if (!fobj)
obj = pdf_dict_gets(obj, "Parent");
}
return fobj ? fobj : pdf_dict_gets(pdf_dict_gets(pdf_dict_gets(pdf_trailer(doc), "Root"), "AcroForm"), key);
}
int pdf_get_field_flags(pdf_document *doc, pdf_obj *obj)
{
return pdf_to_int(pdf_get_inheritable(doc, obj, "Ff"));
}
static char *get_field_type_name(pdf_document *doc, pdf_obj *obj)
{
return pdf_to_name(pdf_get_inheritable(doc, obj, "FT"));
}
int pdf_field_type(pdf_document *doc, pdf_obj *obj)
{
char *type = get_field_type_name(doc, obj);
int flags = pdf_get_field_flags(doc, obj);
if (!strcmp(type, "Btn"))
{
if (flags & Ff_Pushbutton)
return PDF_WIDGET_TYPE_PUSHBUTTON;
else if (flags & Ff_Radio)
return PDF_WIDGET_TYPE_RADIOBUTTON;
else
return PDF_WIDGET_TYPE_CHECKBOX;
}
else if (!strcmp(type, "Tx"))
return PDF_WIDGET_TYPE_TEXT;
else if (!strcmp(type, "Ch"))
{
if (flags & Ff_Combo)
return PDF_WIDGET_TYPE_COMBOBOX;
else
return PDF_WIDGET_TYPE_LISTBOX;
}
else if (!strcmp(type, "Sig"))
return PDF_WIDGET_TYPE_SIGNATURE;
else
return PDF_WIDGET_TYPE_NOT_WIDGET;
}
void pdf_set_field_type(pdf_document *doc, pdf_obj *obj, int type)
{
int setbits = 0;
int clearbits = 0;
char *typename = NULL;
switch(type)
{
case PDF_WIDGET_TYPE_PUSHBUTTON:
typename = "Btn";
setbits = Ff_Pushbutton;
break;
case PDF_WIDGET_TYPE_CHECKBOX:
typename = "Btn";
clearbits = Ff_Pushbutton;
setbits = Ff_Radio;
break;
case PDF_WIDGET_TYPE_RADIOBUTTON:
typename = "Btn";
clearbits = (Ff_Pushbutton|Ff_Radio);
break;
case PDF_WIDGET_TYPE_TEXT:
typename = "Tx";
break;
case PDF_WIDGET_TYPE_LISTBOX:
typename = "Ch";
clearbits = Ff_Combo;
break;
case PDF_WIDGET_TYPE_COMBOBOX:
typename = "Ch";
setbits = Ff_Combo;
break;
case PDF_WIDGET_TYPE_SIGNATURE:
typename = "Sig";
break;
}
if (typename)
pdf_dict_puts_drop(obj, "FT", pdf_new_name(doc, typename));
if (setbits != 0 || clearbits != 0)
{
int bits = pdf_to_int(pdf_dict_gets(obj, "Ff"));
bits &= ~clearbits;
bits |= setbits;
pdf_dict_puts_drop(obj, "Ff", pdf_new_int(doc, bits));
}
}
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