Placeholder class
If a Placeholder is in the visual tree of a Group, it represents the area of all of the member Parts of that Group. If a Placeholder is in the visual tree of an Adornment, it represents the area of the Adornment#adornedObject. Unlike other GraphObjects, the Placeholder measures itself based on these criteria, and not on its own #desiredSize or #scale. It will set its own natural bounds and scale, and in the case of Groups will set the Group's location.
It can only be used in the visual tree of a Group node or an Adornment. There can be at most one Placeholder in a Group or an Adornment.
See the documentation for Group and Adornment for descriptions of the Placeholder roles in each.
- Implemented types
- Available Extensions
- Annotations
-
- @JS()
- @staticInterop
Constructors
- Placeholder([dynamic init])
-
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited