Instance Methods

class HexaPDF::Type::Catalog

Parent	HexaPDF::Dictionary

Represents the PDF’s catalog dictionary which is at the root of the document’s object hierarchy.

The catalog dictionary is linked via the /Root entry from the Trailer.

See: PDF2.0 s7.7.2, Trailer

Field Definitions

Name	Type/Allowed Values	Required	Default Value
Type	Symbol	true	:Catalog
Version	Symbol	false	nil
Extensions	HexaPDF::Dictionary or Hash	false	nil
Pages	HexaPDF::Type::PageTreeNode or Hash	false	nil
PageLabels	HexaPDF::NumberTreeNode or Hash	false	nil
Names	HexaPDF::Type::Names or Hash	false	nil
Dests	HexaPDF::Dictionary or Hash	false	nil
ViewerPreferences	HexaPDF::Type::ViewerPreferences or Hash	false	nil
PageLayout	Symbol One of: :SinglePage, :OneColumn, :TwoColumnLeft, :TwoColumnRight, :TwoPageLeft, :TwoPageRight	false	:SinglePage
PageMode	Symbol One of: :UseNone, :UseOutlines, :UseThumbs, :FullScreen, :UseOC, :UseAttachments	false	:UseNone
Outlines	HexaPDF::Type::Outline or Hash	false	nil
Threads	HexaPDF::PDFArray or Array	false	nil
OpenAction	HexaPDF::Dictionary or HexaPDF::PDFArray or Hash or Array	false	nil
AA	HexaPDF::Dictionary or Hash	false	nil
URI	HexaPDF::Dictionary or Hash	false	nil
AcroForm	HexaPDF::Type::AcroForm::Form or Hash	false	nil
Metadata	HexaPDF::Type::Metadata or Hash	false	nil
StructTreeRoot	HexaPDF::Type::StructTreeRoot or Hash	false	nil
MarkInfo	HexaPDF::Type::MarkInformation or Hash	false	nil
Lang	String	false	nil
SpiderInfo	HexaPDF::Dictionary or Hash	false	nil
OutputIntents	HexaPDF::PDFArray or Array	false	nil
PieceInfo	HexaPDF::Dictionary or Hash	false	nil
OCProperties	HexaPDF::Type::OptionalContentProperties or Hash	false	nil
Perms	HexaPDF::Dictionary or Hash	false	nil
Legal	HexaPDF::Dictionary or Hash	false	nil
Requirements	HexaPDF::PDFArray or Array	false	nil
Collection	HexaPDF::Dictionary or Hash	false	nil
NeedsRendering	TrueClass or FalseClass	false	nil
DSS	HexaPDF::Dictionary or Hash	false	nil
AF	HexaPDF::PDFArray or Array	false	nil
DPartRoot	HexaPDF::Dictionary or Hash	false	nil

Public Instance Methods

acro_form(create: false)¶

Returns the main AcroForm object.

If an AcroForm object exists, the create argument is not used.
If no AcroForm object exists and create is true, a new AcroForm object with default settings will be created and returned.
If no AcroForm object exists and create is false, nil is returned.

See: AcroForm::Form

must_be_indirect?()¶

Returns true since catalog objects must always be indirect.

names()¶

Returns the name dictionary containing all name trees of the document, creating it if needed.

See: Names

optional_content()¶

Returns the optional content properties dictionary, creating it if needed.

This is the main entry point for working with optional content, a.k.a. layers.

See: OptionalContentProperties

outline()¶

Returns the document outline, creating it if needed.

See: Outline

page_labels(create: false)¶

Returns the page labels number tree.

If a page labels number tree exists, the create argument is not used.
If no page labels number tree exists and create is true, a new one is created.
If no page labels number tree exists and create is false, nil is returned.

See: HexaPDF::Document::Pages

pages()¶

Returns the root node of the page tree, creating it if needed.

See: PageTreeNode

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Classes and Modules

class HexaPDF::Type::Catalog

Field Definitions

Public Instance Methods