- java.lang.Object
-
- java.awt.ImageCapabilities
-
-
Constructor Summary
Constructors Constructor and Description ImageCapabilities(boolean accelerated)
Creates a new object for specifying image capabilities.
-
Method Summary
Methods Modifier and Type Method and Description Object
clone()
Creates and returns a copy of this object.boolean
isAccelerated()
Returnstrue
if the object whose capabilities are encapsulated in thisImageCapabilities
can be or is accelerated.boolean
isTrueVolatile()
Returnstrue
if theVolatileImage
described by thisImageCapabilities
can lose its surfaces.
-
-
-
Constructor Detail
-
ImageCapabilities
public ImageCapabilities(boolean accelerated)
Creates a new object for specifying image capabilities.- Parameters:
accelerated
- whether or not an accelerated image is desired
-
-
Method Detail
-
isAccelerated
public boolean isAccelerated()
Returnstrue
if the object whose capabilities are encapsulated in thisImageCapabilities
can be or is accelerated.- Returns:
- whether or not an image can be, or is, accelerated. There are various platform-specific ways to accelerate an image, including pixmaps, VRAM, AGP. This is the general acceleration method (as opposed to residing in system memory).
-
isTrueVolatile
public boolean isTrueVolatile()
Returnstrue
if theVolatileImage
described by thisImageCapabilities
can lose its surfaces.- Returns:
- whether or not a volatile image is subject to losing its surfaces at the whim of the operating system.
-
clone
public Object clone()
Description copied from class:Object
Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any objectx
, the expression:x.clone() != x
x.clone().getClass() == x.getClass()
true
, but these are not absolute requirements. While it is typically the case that:x.clone().equals(x)
true
, this is not an absolute requirement.By convention, the returned object should be obtained by calling
super.clone
. If a class and all of its superclasses (exceptObject
) obey this convention, it will be the case thatx.clone().getClass() == x.getClass()
.By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by
super.clone
before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned bysuper.clone
need to be modified.The method
clone
for classObject
performs a specific cloning operation. First, if the class of this object does not implement the interfaceCloneable
, then aCloneNotSupportedException
is thrown. Note that all arrays are considered to implement the interfaceCloneable
and that the return type of theclone
method of an array typeT[]
isT[]
where T is any reference or primitive type. Otherwise, this method creates a new instance of the class of this object and initializes all its fields with exactly the contents of the corresponding fields of this object, as if by assignment; the contents of the fields are not themselves cloned. Thus, this method performs a "shallow copy" of this object, not a "deep copy" operation.The class
Object
does not itself implement the interfaceCloneable
, so calling theclone
method on an object whose class isObject
will result in throwing an exception at run time.
-
-
Traduction non disponible
Les API Java ne sont pas encore traduites en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.
Version en cache
21/11/2024 21:57:46 Cette version de la page est en cache (à la date du 21/11/2024 21:57:46) afin d'accélérer le traitement. Vous pouvez activer le mode utilisateur dans le menu en haut pour afficher la dernère version de la page.Document créé le 30/08/2006, dernière modification le 04/03/2020
Source du document imprimé : https://www.gaudry.be/java-api-rf-java/awt/imagecapabilities.html
L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.
Références
Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.