PointerTracking enum
Defines how an element tracks the pointer during drag operations, particularly when the pointer moves outside the editor bounds.
This enum controls the behavior of draggable elements (nodes, annotations, connections) when the pointer exits the visible viewport area.
Values
- free → const PointerTracking
-
Element tracks pointer position freely, even outside editor bounds.
Use this for elements that should follow the pointer exactly, like connection endpoints during creation. The element position is always calculated from the current pointer position.
Example: Connection dragging where the endpoint should always be directly under (or offset from) the pointer.
- anchored → const PointerTracking
-
Element anchors at the boundary edge when pointer exits bounds, then resyncs to pointer position when it returns.
Use this for positioned elements like nodes and annotations that should stay visible in the viewport. When the pointer goes outside:
- Element position freezes (doesn't follow pointer outside)
- Autopan continues to reveal more canvas
- When pointer re-enters, element snaps to match pointer position
Example: Node dragging where the node should remain visible while autopan reveals the destination area.
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- index → int
-
A numeric identifier for the enumerated value.
no setterinherited
- name → String
-
Available on Enum, provided by the EnumName extension
The name of the enum value.no setter - 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
Constants
-
values
→ const List<
PointerTracking> - A constant List of the values in this enum, in order of their declaration.