CrossAnnotation module

class lys.widgets.canvas.interface.CrossAnnotation.CrossAnnotation(canvas, pos, axis)[source]

Bases: AnnotationWithLine

Interface to access cross annotations in canvas.

CrossAnnotation is usually generated by addCrossAnnotation method in canvas.

Several methods related to the appearance of line is inherited from AnnotationData.AnnotationWithLine

Parameters

  • canvas (Canvas) – canvas to which the line annotation is added.

  • pos (length 2 sequence) – The position of the annotation in the form of (x, y).

  • axis ('BottomLeft', 'BottomRight', 'TopLeft', or 'TopRight') – The axis to which the annotation is added.

Example:

from lys import display
g = display()
rect = g.canvas.addCrossAnnotation()
rect.setLineColor("#ff0000")
getPosition()[source]

Get the position of the annotation.

Returns

The position of annotation in the form of (x, y)

Return type

length 2 sequence

positionChanged

PyqtSignal that is emitted when the region is changed.

setPosition(pos)[source]

Set position of the annotation.

Parameters

pos (length 2 sequence) – Theposition of cross in the form of (x, y)