CAEntry

Héritage et contrats

Parent : PDF\Specification\SchemaEntry

Définition dans la norme

Tableau 170 · Additional entries specific to markup annotations
ISO 32000-1:2008, §12.5.6.2 · page PDF 400 ↗

/CA number

(Optional; PDF 1.4) The constant opacity value that shall be used in painting the annotation (see Sections 11.2, “Overview of Transparency,” and 11.3.7, “Shape and Opacity Computations”). This value shall apply to all visible elements of the annotation in its closed state (including its background and border) but not to the pop-up window that appears when the annotation is opened. The specified value shall not used if the annotation has an appearance stream (see 12.5.5, “Appearance Streams”); in that case, the appearance stream shall specify any transparency. (However, if the compliant viewer regenerates the annotation’s appearance stream, it may incorporate the CA value into the stream’s content.) The implicit blend mode (see 11.3.5, “Blend Mode””) is Normal. Default value: 1.0. If no explicit appearance stream is defined for the annotation, it may be painted by implementation-dependent means that do not necessarily conform to the PDF imaging model; in this case, the effect of this entry is implementation-dependent as well.

Qualificateur : Optional; PDF 1.4

Les descriptions conditionnelles restent traçables. La présence d’une définition ne réalise pas à elle seule un codec, une signature ou tous les traitements du format. Lire la couverture.

Construction

Méthodes héritées

Propriétés

Constantes

'CA'

'170'

false