public Class NGEllipse

Overrides com.sun.javafx.sg.prism.NGNode.computeOpaqueRegion.

Doc from com.sun.javafx.sg.prism.NGNode.computeOpaqueRegion.

Computes and returns the opaque region for this node. This method

Annotations

@Override

Overrides com.sun.javafx.sg.prism.NGShape.createShapeRep.

Annotations

@Override

Overrides com.sun.javafx.sg.prism.NGShape.hasOpaqueRegion.

Doc from com.sun.javafx.sg.prism.NGNode.hasOpaqueRegion.

Called only on NGNode subclasses which override supportsOpaqueRegions() to return true, this method will return whether or not this NGNode is in a state where it has an opaque region to actually return. If this method returns true, a subsequent call to computeOpaqueRegion(com.sun.javafx.geom.RectBounds) must return a non-null result. Any state used in the computation of this method, when it changes, must result in a call to invalidateOpaqueRegion().

Returns:boolean

Whether this NGNode currently has an opaque region.

Annotations

@Override

Overrides com.sun.javafx.sg.prism.NGNode.supportsOpaqueRegions.

Doc from com.sun.javafx.sg.prism.NGNode.supportsOpaqueRegions.

Gets whether this NGNode supports opaque regions at all. Most node types do not, but some do. If an NGNode subclass is written to support opaque regions, it must override this method to return true. The subclass must then also override the computeDirtyRegion method to return the dirty region, or null if the node in its current state doesn't have one. This method is intended to be immutable.

Returns:boolean

Whether this NGNode implementation supports opaque regions. This could also have been implemented via an interface that some NGNodes implemented, but then we'd have instanceof checks which I'd rather avoid.

Annotations

@Override