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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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# Dev API
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# Private API
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# Code
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