A stateful class that can paint a particular Decoration.
BoxPainter objects can cache resources so that they can be used multiple times.
Some resources used by BoxPainter may load asynchronously. When this happens, the onChanged callback will be invoked. To stop this callback from being called after the painter has been discarded, call dispose.
- onChanged → VoidCallback
Callback that is invoked if an asynchronously-loading resource used by the
decoration finishes loading. For example, an image. When this is invoked,
the paint method should be called again. [...]
- hashCode → int
The hash code for this object. [...]
- runtimeType → Type
A representation of the runtime type of the object.
) → void
Discard any resources being held by the object. [...]
Canvas canvas, Offset offset, ImageConfiguration configuration) → void
- Paints the Decoration for which this object was created on the given canvas using the given configuration. [...]
Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
) → String
Returns a string representation of this object.