Source code for bokeh.models.arrow_heads

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# Copyright (c) 2012 - 2021, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
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''' Models for various kinds of arrow heads that can be added to
Arrow annotations.

'''

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# Boilerplate
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from __future__ import annotations

import logging # isort:skip
log = logging.getLogger(__name__)

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# Imports
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# Bokeh imports
from ..core.has_props import abstract
from ..core.properties import Include, NumberSpec, Override
from ..core.property_mixins import FillProps, LineProps
from ..model import Model

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# Globals and constants
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__all__ = (
    'ArrowHead',
    'NormalHead',
    'OpenHead',
    'TeeHead',
    'VeeHead',
)

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# General API
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[docs]@abstract class ArrowHead(Model): ''' Base class for arrow heads. ''' size = NumberSpec(default=25, help=""" The size, in pixels, of the arrow head. """)
[docs]class OpenHead(ArrowHead): ''' Render an open-body arrow head. ''' line_props = Include(LineProps, help=""" The {prop} values for the arrow head outline. """)
[docs]class NormalHead(ArrowHead): ''' Render a closed-body arrow head. ''' line_props = Include(LineProps, help=""" The {prop} values for the arrow head outline. """) fill_props = Include(FillProps, help=""" The {prop} values for the arrow head interior. """) fill_color = Override(default="black")
[docs]class TeeHead(ArrowHead): ''' Render a tee-style arrow head. ''' line_props = Include(LineProps, help=""" The {prop} values for the arrow head outline. """)
[docs]class VeeHead(ArrowHead): ''' Render a vee-style arrow head. ''' line_props = Include(LineProps, help=""" The {prop} values for the arrow head outline. """) fill_props = Include(FillProps, help=""" The {prop} values for the arrow head interior. """) fill_color = Override(default="black")
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