This interface describes the context for many operations performed on items in a canvasComponent.
Inheritance Hierarchy
ICanvasContext
Implemented Interfaces
Remarks
This interface extends the ILookup interface to provide dynamic lookup capability.
Type Details
- yFiles module
- view
Properties
Gets the Canvas that is associated with this context.
Gets the radius for hit tests and marquee selection tests in world coordinates.
Remarks
In the default implementations, this property automatically distinguishes between different radii depending on the last interaction event type.
This value already takes the zoom level into account.
See Also
Methods
Adds an element to the defs section of the document, if it has not been added yet.
Parameters
options - Object
A map of options to pass to the method.
A map of options to pass to the method.
- defsSupport - ISvgDefsCreator
- The instance that is used to create and update the element and to query if the element is still referenced
Returns
- ↪string
- The id of the element with which it can be referenced using an url reference.
Returns an instance that implements the given type or null.
Remarks
Typically, this method will be called to obtain a different view or aspect of the current instance. This is quite similar to casting or using a super type or interface of this instance, but is not limited to inheritance or compile-time constraints. An instance implementing this method is not required to return non-
null implementations for the types, nor does it have to return the same instance any time. Also, it depends on the type and context whether the instance returned stays up to date or needs to be re-obtained for further use.Type Parameters
- T
Parameters
options - Object
A map of options to pass to the method.
A map of options to pass to the method.
- type - Constructor<T>
- the type for which an instance shall be returned
Returns
- ↪T?
- an instance that is assignable to the type or
null