example2.py

import sys
import os

from bokeh.plotting import figure, curdoc, vplot
from bokeh.models.widgets import TextInput
#from bokeh.io import vform

from ginga.web.bokehw import ImageViewBokeh as ib
from ginga.misc import log
from ginga.util.loader import load_data


def main(options, args):

    logger = log.get_logger("ginga", options=options)

    # create a new plot with default tools, using figure
    fig = figure(x_range=[0, 600], y_range=[0, 600],
                 plot_width=600, plot_height=600, toolbar_location=None)

    viewer = ib.CanvasView(logger)
    viewer.set_figure(fig)

    def load_file(path):
        image = load_data(path, logger=logger)
        viewer.set_image(image)

    def load_file_cb(attr_name, old_val, new_val):
        #print(attr_name, old_val, new_val)
        load_file(new_val)

    # add a entry widget and configure with the call back
    dstdir = options.indir
    path_w = TextInput(value=dstdir, title="File:")
    path_w.on_change('value', load_file_cb)

    if len(args) > 0:
        load_file(args[0])

    # put the path widget and viewer in a layout and add to the document
    curdoc().add_root(vplot(fig, path_w))


if __name__ == "__main__":

    # Parse command line options
    from argparse import ArgumentParser

    argprs = ArgumentParser()

    argprs.add_argument("--debug", dest="debug", default=False,
                        action="store_true",
                        help="Enter the pdb debugger on main()")
    argprs.add_argument("-d", "--indir", dest="indir", metavar="DIR",
                        default=os.environ['HOME'],
                        help="Look in DIR for files")
    argprs.add_argument("--profile", dest="profile", action="store_true",
                        default=False,
                        help="Run the profiler on main()")
    log.addlogopts(argprs)

    (options, args) = argprs.parse_known_args(sys.argv[1:])

    # Are we debugging this?
    if options.debug:
        import pdb

        pdb.run('main(options, args)')

    # Are we profiling this?
    elif options.profile:
        import profile

        print(("%s profile:" % sys.argv[0]))
        profile.run('main(options, args)')

    else:
        main(options, args)

# END