Scheme Annotations (annotations)¶

class orangecanvas.scheme.annotations.BaseSchemeAnnotation¶

Bases: PyQt5.QtCore.QObject

Base class for scheme annotations.

geometry_changed¶

Signal emitted when the geometry of the annotation changes

class orangecanvas.scheme.annotations.SchemeArrowAnnotation(start_pos, end_pos, color='red', anchor=None, parent=None)¶

Bases: orangecanvas.scheme.annotations.BaseSchemeAnnotation

An arrow annotation in the scheme.

set_line(start_pos, end_pos)¶

Set arrow lines start and end position ((x, y) tuples).

start_pos¶

Start position of the arrow (base point).

end_pos¶

End position of the arrow (arrow head points toward the end).

set_geometry(geometry)¶

Set the geometry of the arrow as a start and end position tuples (e.g. set_geometry(((0, 0), (100, 0))).

geometry¶

Return the start and end positions of the arrow.

set_color(color)¶

Set the fill color for the arrow as a string (#RGB, #RRGGBB, #RRRGGGBBB, #RRRRGGGGBBBB format or one of SVG color keyword names).

color¶

The arrow’s fill color.

class orangecanvas.scheme.annotations.SchemeTextAnnotation(rect, text='', font=None, anchor=None, parent=None)¶

Bases: orangecanvas.scheme.annotations.BaseSchemeAnnotation

Text annotation in the scheme.

text_changed(str)¶

Signal emitted when the annotation text changes.

set_rect(rect)¶

Set the text geometry bounding rectangle ((x, y, width, height) tuple).

rect¶

Text bounding rectangle

set_geometry(rect)¶

Set the text geometry (same as set_rect)

geometry¶

Text annotation geometry (same as rect

set_text(text)¶

Set the annotation text.

text¶

Annotation text.

set_font(font)¶

Set the annotation’s font as a dictionary of font properties (at the moment only family and size are used).

>>> annotation.set_font({"family": "Helvetica", "size": 16})

font¶

Annotation’s font property dictionary.