StructTreeRoot

Vue d’ensemble

‘StructTreeRoot’ est une classe dans Aspose.PDF FOSS pour Java.

La racine de l’arbre de structure logique (ISO 32000-1:2008, §14.7.2, tableau 322).

Cette classe fournit 13 méthodes pour travailler avec les objets StructTreeRoot dans les programmes Java. Les méthodologies disponibles comprennent: ‘StructTREERoots’, ‘clearChilds’, createNew', ‘findElementByMcid’, 'findEls', ’getAllElements', ‚getChillren, ‘getParentTri , ' getParentsTreNextKey,, ‘gettPdfDictionary., 'GetRoleMap et 1 méthode supplémentaire. Tous les membres publics sont accessibles à toute application Java après l’installation de l’Aspose.PDF FOSS pour le package Java . Propriétés : ‘all Elementss, children‘, ‘parent Tretree, ’NextTreykey‘t-pdf, et plus.

Propriétés

Name	Type	Access	Description
`pdfDictionary`	`PdfDictionary`	Read	Returns the underlying PDF dictionary.
`rootElement`	`StructureElement`	Read	Returns the root structure element (typically the /Document element).
`children`	`ElementList`	Read	Returns all top-level structure elements.
`roleMap`	`RoleMap`	Read	Returns the role map for this structure tree.
`parentTreeNextKey`	`int`	Read	Returns the next available parent tree key (/ParentTreeNextKey).
`parentTree`	`NumberTree`	Read	Returns the {@code /ParentTree} number tree (§14.7.4.4) — the reverse
map from a page’s structural parent key (the /StructParents entry on
the page) and from a content stream’s marked-content identifier
(MCID, indexed via the page entry) back to the structure element(s)
referencing them.
`allElements`	`List<StructureElement>`	Read	Returns all structure elements in the tree (depth-first traversal).

méthodes

Signature	Description
`StructTreeRoot(dict: PdfDictionary, parser: PDFParser)`	Creates a StructTreeRoot wrapping the given dictionary.
`getPdfDictionary()` → `PdfDictionary`	Returns the underlying PDF dictionary.
`getRootElement()` → `StructureElement`	Returns the root structure element (typically the /Document element).
`getChildren()` → `ElementList`	Returns all top-level structure elements.
`getRoleMap()` → `RoleMap`	Returns the role map for this structure tree.
`getParentTreeNextKey()` → `int`	Returns the next available parent tree key (/ParentTreeNextKey).
`getParentTree()` → `NumberTree`	Returns the {@code /ParentTree} number tree (§14.7.4.4) — the reverse
map from a page’s structural parent key (the /StructParents entry on
the page) and from a content stream’s marked-content identifier
(MCID, indexed via the page entry) back to the structure element(s)
referencing them.
`lookupParentTreeEntry(key: int)` → `PdfBase`	Resolves a single {@code /ParentTree} key.
`findElementByMcid(structParentsKey: int, mcid: int)` → `StructureElement`	Returns the structure element that owns the marked-content with the
given MCID on a page identified by its {@code /StructParents} key.
`getAllElements()` → `List<StructureElement>`	Returns all structure elements in the tree (depth-first traversal).
`findElements(typeName: String)` → `List<StructureElement>`	Finds all structure elements matching the given structure type name.
`clearChilds()`	Removes all child elements from the structure tree.
`createNew()` → `StructTreeRoot`	Creates a new StructTreeRoot with a /Document root element.

Voir aussi

Aspose.PDF pour Java — API d’entreprise