Form

Form

Overview

Form là một loại trong Aspose.PDF FOSS for Go.

Hình thức là dạng xem của tài liệu AcroForm.

Loại này cung cấp 13 phương pháp để làm việc với các đối tượng hình thức trong các chương trình Go. Các phương pháp có sẵn bao gồm: AddCheckbox, AddComboBox, AddListBox, AddPushButton, AddRadioGroup, AddTextField, Field, Fields, Flatten, HasField, NeedAppearances, RemoveField,và 1 phương pháp bổ sung. Tất cả các thành viên công cộng đều có thể truy cập vào bất kỳ ứng dụng Go nào sau khi cài đặt gói Aspose.PDF FOSS for Go.

Methods

Signature	Description
`Flatten()` → `error`	Flatten bakes every form field’s current appearance into its page’s content stream and then removes all fields, their widgets, and the /AcroForm dict, producing a non-interactive document that renders the same.
`Fields()` → `[]Field`	Fields returns all leaf form fields as a flat slice.
`Field(name: string)` → `Field`	Field returns the leaf field by FullName, or nil if no such field exists.
`HasField(name: string)` → `bool`	HasField reports whether a leaf field with the given FullName exists.
`NeedAppearances()` → `bool`	NeedAppearances reports whether /AcroForm/NeedAppearances is true, which tells viewers to regenerate cached /AP appearance streams when displaying form fields.
`SetNeedAppearances(v: bool)`	SetNeedAppearances toggles /AcroForm/NeedAppearances.
`AddTextField(pageNum: int, rect: Rectangle, name: string)` → `(*TextBoxField, error)`	AddTextField creates a single-line text input on pageNum with the given rectangle and field name, auto-creating /AcroForm and the default Helvetica font resource if needed.
`AddCheckbox(pageNum: int, rect: Rectangle, name: string)` → `(*CheckboxField, error)`	AddCheckbox creates a checkbox widget on pageNum with the given rectangle and field name.
`AddComboBox(pageNum: int, rect: Rectangle, name: string, options: []ChoiceOption)` → `(*ComboBoxField, error)`	AddComboBox creates a single-select dropdown choice field.
`AddListBox(pageNum: int, rect: Rectangle, name: string, options: []ChoiceOption)` → `(*ListBoxField, error)`	AddListBox creates a single-select list field.
`AddPushButton(pageNum: int, rect: Rectangle, name: string, caption: string)` → `(*ButtonField, error)`	AddPushButton creates a non-toggling button.
`AddRadioGroup(name: string, items: []RadioItem)` → `(*RadioButtonField, error)`	AddRadioGroup creates a radio-button parent field plus one widget per item.
`RemoveField(name: string)` → `bool`	RemoveField removes the named field (and all its widget annotations) from /AcroForm/Fields and from each affected page’s /Annots.
`ExportFDF()` → `([]byte, error)`	ExportFDF serialises the form’s field values as an FDF (Forms Data Format) document — a small PDF-syntax file ( `%FDF-1.2` … `/FDF /Fields [ … ]` ) that Acrobat and other readers import.
`WriteFDF(w: io.Writer)` → `error`	WriteFDF writes ExportFDF output to w.
`ImportFDF(data: []byte)` → `(int, error)`	ImportFDF applies field values from an FDF document and returns the number of fields set.
`ReadFDF(r: io.Reader)` → `(int, error)`	ReadFDF reads an FDF document from r and applies it via ImportFDF.
`AddPasswordField(pageNum: int, rect: Rectangle, name: string)` → `(*PasswordBoxField, error)`	AddPasswordField adds a masked text field.
`AddFileSelectField(pageNum: int, rect: Rectangle, name: string)` → `(*FileSelectBoxField, error)`	AddFileSelectField adds a file-select text field.
`AddRichTextField(pageNum: int, rect: Rectangle, name: string)` → `(*RichTextBoxField, error)`	AddRichTextField adds a rich-text field.
`AddNumberField(pageNum: int, rect: Rectangle, name: string, opts: NumberFormatOptions)` → `(*NumberField, error)`	AddNumberField adds a number field formatted per opts.
`AddDateField(pageNum: int, rect: Rectangle, name: string)` → `(*DateField, error)`	AddDateField adds a date field with the given format mask (e.g.
`ExportJSON(opts: ...JSONExportOptions)` → `([]byte, error)`	ExportJSON serialises the form’s field values to a typed JSON document keyed by each field’s full name: `{"name": {"type": "...", "value": ...}}` .
`WriteJSON(w: io.Writer, opts: ...JSONExportOptions)` → `error`	WriteJSON writes ExportJSON output to w.
`ImportJSON(data: []byte)` → `(int, error)`	ImportJSON applies field values from a typed JSON document (the shape ExportJSON produces) and returns the number of fields actually set.
`ReadJSON(r: io.Reader)` → `(int, error)`	ReadJSON reads a JSON document from r and applies it via ImportJSON.
`ExportXFDF()` → `([]byte, error)`	ExportXFDF serialises the form’s field values as an XFDF document.
`WriteXFDF(w: io.Writer)` → `error`	WriteXFDF writes ExportXFDF output to w.
`ImportXFDF(data: []byte)` → `(int, error)`	ImportXFDF applies field values from an XFDF document and returns the number of fields set.
`ReadXFDF(r: io.Reader)` → `(int, error)`	ReadXFDF reads an XFDF document from r and applies it via ImportXFDF.

Overview

Methods

See Also