Source code for bokeh.plotting.gmap

#-----------------------------------------------------------------------------
# Copyright (c) 2012 - 2022, Anaconda, Inc., and Bokeh Contributors.
# All rights reserved.
#
# The full license is in the file LICENSE.txt, distributed with this software.
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# Boilerplate
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from __future__ import annotations

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

#-----------------------------------------------------------------------------
# Imports
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# Bokeh imports
from ..models import (
    GMapPlot,
    LinearAxis,
    MercatorTicker,
    MercatorTickFormatter,
    Range1d,
)
from ._figure import BaseFigureOptions
from ._plot import _get_num_minor_ticks
from ._tools import process_active_tools, process_tools_arg
from .glyph_api import GlyphAPI

#-----------------------------------------------------------------------------
# Globals and constants
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DEFAULT_TOOLS = "pan,wheel_zoom,reset,help"

__all__ = (
    'GMap',
    'GMapFigureOptions',
    'gmap'
)

#-----------------------------------------------------------------------------
# General API
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class GMap(GMapPlot, GlyphAPI):
    ''' A subclass of |Plot| that simplifies plot creation with default axes,
    grids, tools, etc.

    Args:
        google_api_key (str):
            Google requires an API key be supplied for maps to function. See:

            https://developers.google.com/maps/documentation/javascript/get-api-key

        map_options: (:class:`~bokeh.models.map_plots.GMapOptions`)
            Configuration specific to a Google Map

    In addition to all the Bokeh model property attributes documented below,
    the ``Figure`` initializer also accepts the following options, which can
    help simplify configuration:

    .. bokeh-options:: GMapFigureOptions
        :module: bokeh.plotting.gmap

    '''

    def __init__(self, **kw) -> None:
        opts = GMapFigureOptions(kw)
        super().__init__(x_range=Range1d(), y_range=Range1d(), **kw)

        if opts.x_axis_location is not None:
            xf = MercatorTickFormatter(dimension="lon")
            xt = MercatorTicker(dimension="lon")
            xt.num_minor_ticks = _get_num_minor_ticks(LinearAxis, opts.x_minor_ticks)
            self.add_layout(LinearAxis(formatter=xf, ticker=xt, axis_label=opts.x_axis_label), opts.x_axis_location)

        if opts.y_axis_location is not None:
            yf = MercatorTickFormatter(dimension="lat")
            yt = MercatorTicker(dimension="lat")
            yt.num_minor_ticks = _get_num_minor_ticks(LinearAxis, opts.y_minor_ticks)
            self.add_layout(LinearAxis(formatter=yf, ticker=yt, axis_label=opts.y_axis_label), opts.y_axis_location)

        tool_objs, tool_map = process_tools_arg(self, opts.tools, opts.tooltips)
        self.add_tools(*tool_objs)
        process_active_tools(
            self.toolbar,
            tool_map,
            opts.active_drag,
            opts.active_inspect,
            opts.active_scroll,
            opts.active_tap,
            opts.active_multi,
        )

    @property
    def plot(self):
        return self

    @property
    def coordinates(self):
        return None

def gmap(google_api_key, map_options, **kwargs) -> GMap:
    ''' Create a new :class:`~bokeh.plotting.GMap` for plotting.

    Args:
        google_api_key (str):
            Google requires an API key be supplied for maps to function. See:

            https://developers.google.com/maps/documentation/javascript/get-api-key

            The Google API key will be stored as a base64-encoded string in
            the Bokeh Document JSON.

        map_options: (:class:`~bokeh.models.map_plots.GMapOptions`)
            Configuration specific to a Google Map

    All other keyword arguments are passed to :class:`~bokeh.plotting.GMap`.

    Returns:
       :class:`~bokeh.plotting.GMap`

    '''
    return GMap(api_key=google_api_key, map_options=map_options, **kwargs)

#-----------------------------------------------------------------------------
# Dev API
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class GMapFigureOptions(BaseFigureOptions):
    pass

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# Private API
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#-----------------------------------------------------------------------------
# Code
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