#
# main.py -- reference viewer for the Ginga toolkit.
#
# This is open-source software licensed under a BSD license.
# Please see the file LICENSE.txt for details.
#
"""This module handles the main reference viewer."""
# stdlib imports
import glob
import sys
import os
import logging
import logging.handlers
import threading
# 3rd party
import yaml
# Local application imports
from ginga.misc.Bunch import Bunch
from ginga.misc import Task, ModuleManager, Settings, log
import ginga.version as version
import ginga.toolkit as ginga_toolkit
from ginga.util import paths, rgb_cms, compat, loader
# Catch warnings
logging.captureWarnings(True)
__all__ = ['ReferenceViewer']
default_layout = ['seq', {},
['vbox', dict(name='top', width=1400, height=700), # noqa
dict(row=['hbox', dict(name='menu')],
stretch=0),
dict(row=['hpanel', dict(name='hpnl'),
['ws', dict(name='left', wstype='tabs', # noqa
width=300, height=-1, group=2),
# (tabname, layout), ...
[("Info", ['vpanel', {},
['ws', dict(name='uleft', wstype='stack',
height=250, group=3)],
['ws', dict(name='lleft', wstype='tabs',
height=330, group=3)],
]
)]],
['vbox', dict(name='main', width=600),
dict(row=['ws', dict(name='channels', wstype='tabs',
group=1, use_toolbar=True,
default=True)],
stretch=1),
dict(row=['ws', dict(name='cbar', wstype='stack',
group=99)], stretch=0),
dict(row=['ws', dict(name='readout', wstype='stack',
group=99)], stretch=0),
dict(row=['ws', dict(name='operations', wstype='stack',
group=99)], stretch=0),
],
['ws', dict(name='right', wstype='tabs',
width=400, height=-1, group=2),
# (tabname, layout), ...
[("Dialogs", ['ws', dict(name='dialogs', wstype='tabs',
group=2)
]
)]
],
], stretch=1), # noqa
dict(row=['ws', dict(name='toolbar', wstype='stack',
height=40, group=2)],
stretch=0),
dict(row=['hbox', dict(name='status')], stretch=0),
]]
plugins = [
# hidden plugins, started at program initialization
Bunch(module='Operations', workspace='operations', start=True,
hidden=True, category='System', menu="Operations [G]",
ptype='global', enabled=True),
Bunch(module='Toolbar', workspace='toolbar', start=True,
hidden=True, category='System', menu="Toolbar [G]", ptype='global',
enabled=True),
Bunch(module='Pan', workspace='uleft', start=True,
hidden=True, category='System', menu="Pan [G]", ptype='global',
enabled=True),
Bunch(module='Info', tab='Synopsis', workspace='lleft', start=True,
hidden=True, category='System', menu="Info [G]", ptype='global',
enabled=True),
Bunch(module='Thumbs', tab='Thumbs', workspace='right', start=True,
hidden=True, category='System', menu="Thumbs [G]", ptype='global',
enabled=True),
Bunch(module='Contents', tab='Contents', workspace='right', start=True,
hidden=True, category='System', menu="Contents [G]", ptype='global',
enabled=True),
Bunch(module='Colorbar', workspace='cbar', start=True,
hidden=True, category='System', menu="Colorbar [G]", ptype='global',
enabled=True),
Bunch(module='Cursor', workspace='readout', start=True,
hidden=True, category='System', menu="Cursor [G]", ptype='global',
enabled=True),
Bunch(module='Errors', tab='Errors', workspace='right', start=True,
hidden=True, category='System', menu="Errors [G]", ptype='global',
enabled=True),
Bunch(module='Downloads', tab='Downloads', workspace='right', start=False,
menu="Downloads [G]", category='Utils', ptype='global', enabled=True),
# optional, user-started plugins
Bunch(module='Blink', tab='Blink Channels', workspace='right', start=False,
name='Blink[channels]', menu="Blink Channels [G]",
category='Analysis', ptype='global', enabled=True),
Bunch(module='Blink', workspace='dialogs', menu='Blink Images',
name='Blink[images]', category='Analysis', ptype='local',
enabled=True),
Bunch(module='Crosshair', workspace='left', category='Analysis',
ptype='local', enabled=True),
Bunch(module='Cuts', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='LineProfile', workspace='dialogs',
category='Analysis.Datacube', ptype='local', enabled=True),
Bunch(module='Histogram', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='Overlays', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='Pick', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='PixTable', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='TVMark', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='TVMask', workspace='dialogs', category='Analysis',
ptype='local', enabled=True),
Bunch(module='WCSMatch', tab='WCSMatch', workspace='right', start=False,
menu="WCS Match [G]", category='Analysis', ptype='global',
enabled=True),
Bunch(module='Command', tab='Command', workspace='lleft', start=False,
menu="Command Line [G]", category='Debug', ptype='global',
enabled=True),
Bunch(module='Log', tab='Log', workspace='right', start=False,
menu="Logger Info [G]", category='Debug', ptype='global',
enabled=True),
Bunch(module='MultiDim', workspace='lleft', category='Navigation',
ptype='local', enabled=True),
Bunch(module='RC', tab='RC', workspace='right', start=False,
menu="Remote Control [G]", category='Remote', ptype='global',
enabled=True),
Bunch(module='SAMP', tab='SAMP', workspace='right', start=False,
menu="SAMP Client [G]", category='Remote', ptype='global',
enabled=False),
Bunch(module='Compose', workspace='dialogs', category='RGB', ptype='local',
enabled=False),
Bunch(module='ScreenShot', workspace='dialogs', category='RGB',
ptype='local', enabled=True),
Bunch(module='ColorMapPicker', tab='ColorMapPicker',
name="ColorMapPicker[G]", menu="Set Color Map [G]",
workspace='right', start=False,
category='RGB', ptype='global', enabled=True),
Bunch(module='ColorMapPicker',
menu="Set Color Map", workspace='dialogs', category='RGB',
ptype='local', enabled=True),
Bunch(module='PlotTable', workspace='dialogs', category='Table',
ptype='local', enabled=True),
Bunch(module='Catalogs', workspace='dialogs', category='Utils',
ptype='local', enabled=True),
Bunch(module='Drawing', workspace='dialogs', category='Utils',
ptype='local', enabled=True),
Bunch(module='AutoLoad', workspace='dialogs', category='Utils',
ptype='local', enabled=False),
Bunch(module='Pipeline', workspace='dialogs', category='Utils',
ptype='local', enabled=False),
Bunch(module='FBrowser', workspace='dialogs', category='Utils',
ptype='local', enabled=True),
Bunch(module='ChangeHistory', tab='History', workspace='right',
menu="History [G]", start=False, category='Utils', ptype='global',
enabled=True),
Bunch(module='Mosaic', workspace='dialogs', category='Utils', ptype='local',
enabled=True),
Bunch(module='Collage', workspace='dialogs', category='Utils', ptype='local',
enabled=True),
Bunch(module='FBrowser', tab='Open File', workspace='right',
name="FBrowser[G]", menu="Open File [G]", start=False,
category='Utils', ptype='global', enabled=True),
Bunch(module='Preferences', workspace='dialogs', category='Utils',
ptype='local', enabled=True),
Bunch(module='Ruler', workspace='dialogs', category='Utils', ptype='local',
enabled=True),
# TODO: Add SaveImage to File menu.
Bunch(module='SaveImage', tab='SaveImage', workspace='right',
menu="Save File [G]", start=False, category='Utils', ptype='global',
enabled=True),
Bunch(module='WCSAxes', workspace='dialogs', category='Utils',
ptype='local', enabled=True),
Bunch(module='Header', tab='Header', workspace='left', start=False,
menu="Header [G]", hidden=False, category='Utils', ptype='global',
enabled=True),
Bunch(module='Zoom', tab='Zoom', workspace='left', start=False,
menu="Zoom [G]", category='Utils', ptype='global', enabled=True),
Bunch(module='LoaderConfig', tab='Loaders', workspace='channels',
start=False, menu="LoaderConfig [G]", category='Debug',
ptype='global', enabled=True),
Bunch(module='PluginConfig', tab='Plugins', workspace='channels',
start=False, menu="PluginConfig [G]", category='Debug',
ptype='global', enabled=True),
]
[docs]class ReferenceViewer(object):
"""
This class exists solely to be able to customize the reference
viewer startup.
"""
def __init__(self, layout=default_layout, plugins=plugins, appname='ginga',
basedir=None, channels=None):
self.appname = appname
self.basedir = basedir
self.layout = layout
if channels is None:
channels = ['Image']
self.channels = channels
self.default_plugins = plugins
self.plugins = []
self.plugin_dct = dict()
[docs] def add_plugin_spec(self, spec):
self.plugins.append(spec)
plugin_name = self.get_plugin_name(spec)
self.plugin_dct[plugin_name] = spec
[docs] def clear_default_plugins(self):
self.plugins = []
self.plugin_dct = dict()
[docs] def get_plugin_name(self, spec):
if 'name' in spec:
return spec['name']
module = spec['module']
if '.' in module:
module = module.split('.')[-1]
klass = spec.get('klass', None)
name = module if klass is None else klass
return name
[docs] def add_default_plugins(self, except_global=[], except_local=[]):
"""
Add the ginga-distributed default set of plugins to the
reference viewer.
"""
# add default plugins
for spec in self.default_plugins:
ptype = spec.get('ptype', 'local')
if ptype == 'global' and spec.module not in except_global:
self.add_plugin_spec(spec)
if ptype == 'local' and spec.module not in except_local:
self.add_plugin_spec(spec)
[docs] def add_separately_distributed_plugins(self):
groups = ['ginga.rv.plugins', 'ginga_plugins',
'{}_plugins'.format(self.appname)]
available_methods = []
for group in groups:
discovered_plugins = compat.ep_get(group)
for entry_point in discovered_plugins:
try:
method = entry_point.load()
available_methods.append(method)
except Exception as e:
print("Error trying to load entry point %s: %s" % (
str(entry_point), str(e)))
for method in available_methods:
try:
spec = method()
self.add_plugin_spec(spec)
except Exception as e:
print("Error trying to instantiate external plugin using %s: %s" % (
str(method), str(e)))
[docs] def add_default_options(self, argprs):
"""
Adds the default reference viewer startup options to an
ArgumentParser instance `argprs`.
"""
if hasattr(argprs, 'add_option'):
# older OptParse
add_argument = argprs.add_option
else:
# newer ArgParse
add_argument = argprs.add_argument
add_argument("--basedir", dest="basedir", metavar="NAME",
help="Specify Ginga configuration area")
add_argument("--bufsize", dest="bufsize", metavar="NUM",
type=int, default=10,
help="Buffer length to NUM")
add_argument('-c', "--channels", dest="channels",
help="Specify list of channels to create")
add_argument("--disable-plugins", dest="disable_plugins",
metavar="NAMES",
help="Specify plugins that should be disabled")
add_argument("--display", dest="display", metavar="HOST:N",
help="Use X display on HOST:N")
add_argument("--fitspkg", dest="fitspkg", metavar="NAME",
default=None,
help="Prefer FITS I/O module NAME")
add_argument("-g", "--geometry", dest="geometry",
default=None, metavar="GEOM",
help="X geometry for initial size and placement")
add_argument("--modules", dest="modules", metavar="NAMES",
help="Specify additional modules to load")
add_argument("--norestore", dest="norestore", default=False,
action="store_true",
help="Don't restore the GUI from a saved layout")
add_argument("--nosplash", dest="nosplash", default=False,
action="store_true",
help="Don't display the splash screen")
add_argument("--numthreads", dest="numthreads", type=int,
default=None, metavar="NUM",
help="Start NUM threads in thread pool")
add_argument("--opengl", dest="opengl", default=False,
action="store_true",
help="Use OpenGL acceleration")
add_argument("--plugins", dest="plugins", metavar="NAMES",
help="Specify additional plugins to load")
add_argument("--sep", dest="separate_channels", default=False,
action="store_true",
help="Load files in separate channels")
add_argument("--suppress-fits-warnings",
dest="suppress_fits_warnings", default=False,
action="store_true",
help="Suppress FITS verify warnings")
add_argument("-t", "--toolkit", dest="toolkit", metavar="NAME",
default=None,
help="Prefer GUI toolkit (gtk|qt)")
add_argument("--wcspkg", dest="wcspkg", metavar="NAME",
default=None,
help="Prefer WCS module NAME")
log.addlogopts(argprs)
[docs] def main(self, options, args):
"""
Main routine for running the reference viewer.
`options` is a ArgumentParser object that has been populated with
values from parsing the command line. It should at least include
the options from add_default_options()
`args` is a list of arguments to the viewer after parsing out
options. It should contain a list of files or URLs to load.
"""
logname = self.appname.lower().replace(' ', '_')
# Create a logger
logger = log.get_logger(name=logname, options=options)
if options.basedir is not None:
self.basedir = os.path.expanduser(options.basedir)
if self.basedir is not None:
paths.ginga_home = self.basedir
else:
self.basedir = paths.ginga_home
# Get settings (preferences)
if not os.path.exists(self.basedir):
try:
os.mkdir(self.basedir)
except OSError as e:
logger.warning(
"Couldn't create %s settings area (%s): %s" % (
self.appname, self.basedir, str(e)))
logger.warning("Preferences will not be able to be saved")
# Set up preferences
prefs = Settings.Preferences(basefolder=self.basedir, logger=logger)
settings = prefs.create_category('general')
settings.set_defaults(title=self.appname.capitalize(),
useMatplotlibColormaps=False,
widgetSet='choose',
WCSpkg='choose', FITSpkg='choose',
suppress_fits_warnings=False,
recursion_limit=2000,
num_threads=30,
icc_working_profile=None,
font_scaling_factor=None,
save_layout=True,
use_opengl=False,
layout_file='layout.json',
plugin_file='plugins.yml',
channel_prefix="Image")
settings.load(onError='silent')
# default of 1000 is a little too small
sys.setrecursionlimit(settings.get('recursion_limit'))
# So we can find our plugins
sys.path.insert(0, self.basedir)
package_home = os.path.split(sys.modules['ginga.version'].__file__)[0]
child_dir = os.path.join(package_home, 'rv', 'plugins')
sys.path.insert(0, child_dir)
plugin_dir = os.path.join(self.basedir, 'plugins')
sys.path.insert(0, plugin_dir)
# Create the dynamic module manager
mm = ModuleManager.ModuleManager(logger)
# what is the dynamic config file to load
app_config = "{}_config".format(self.appname)
gc = os.path.join(self.basedir, f"{app_config}.py")
have_app_config = os.path.exists(gc)
# User configuration, earliest possible intervention
if have_app_config:
try:
app_config = mm.load_module(app_config)
if hasattr(app_config, 'init_config'):
app_config.init_config(self)
except Exception as e:
logger.error("Error processing %s config file: %s" % (
self.appname, str(e)), exc_info=True)
# Choose a toolkit
if options.toolkit:
toolkit = options.toolkit
else:
toolkit = settings.get('widgetSet', 'choose')
if toolkit == 'choose':
try:
ginga_toolkit.choose()
except ImportError as e:
print("UI toolkit choose error: %s" % str(e))
sys.exit(1)
else:
ginga_toolkit.use(toolkit)
tkname = ginga_toolkit.get_family()
logger.info("Chosen toolkit (%s) family is '%s'" % (
ginga_toolkit.toolkit, tkname))
# these imports have to be here, otherwise they force the choice
# of toolkit too early
from ginga.rv.Control import GingaShell, GuiLogHandler
if settings.get('useMatplotlibColormaps', False):
# Add matplotlib color maps if matplotlib is installed
try:
from ginga import cmap
cmap.add_matplotlib_cmaps(fail_on_import_error=False)
except Exception as e:
logger.warning(
"failed to load matplotlib colormaps: %s" % (str(e)))
# Set a working RGB ICC profile if user has one
working_profile = settings.get('icc_working_profile', None)
rgb_cms.working_profile = working_profile
# User wants to customize the WCS package?
if options.wcspkg:
wcspkg = options.wcspkg
else:
wcspkg = settings.get('WCSpkg', 'choose')
try:
from ginga.util import wcsmod
if wcspkg != 'choose':
assert wcsmod.use(wcspkg) is True
except Exception as e:
logger.warning(
"failed to set WCS package preference '{}': {}".format(wcspkg, e))
# User wants to customize the FITS package?
if options.fitspkg:
fitspkg = options.fitspkg
else:
fitspkg = settings.get('FITSpkg', 'choose')
if options.suppress_fits_warnings:
supp_warn = options.suppress_fits_warnings
else:
supp_warn = settings.get('suppress_fits_warnings', False)
if supp_warn:
import warnings
from astropy.io import fits
warnings.simplefilter('ignore', fits.verify.VerifyWarning)
try:
from ginga.util.io import io_fits
if fitspkg != 'choose':
assert io_fits.use(fitspkg) is True
except Exception as e:
logger.warning(
"failed to set FITS package preference '{}': {}".format(fitspkg, e))
ev_quit = threading.Event()
# Create and start thread pool
num_threads = settings.get('num_threads', 30)
if options.numthreads is not None:
num_threads = options.numthreads
thread_pool = Task.ThreadPool(num_threads, logger,
ev_quit=ev_quit)
thread_pool.startall()
# Create the Ginga main object
ginga_shell = GingaShell(logger, thread_pool, mm, prefs,
ev_quit=ev_quit)
if options.opengl:
settings.set(use_opengl=True)
layout_file = os.path.join(self.basedir, settings.get('layout_file',
'layout.json'))
ginga_shell.set_layout(self.layout, layout_file=layout_file,
save_layout=settings.get('save_layout', True))
# User configuration (custom star catalogs, etc.)
if have_app_config:
try:
if hasattr(app_config, 'pre_gui_config'):
app_config.pre_gui_config(ginga_shell)
except Exception as e:
logger.error("Error importing %s config file: %s" % (
self.appname, str(e)), exc_info=True)
# Build desired layout
ginga_shell.build_toplevel(ignore_saved_layout=options.norestore)
# Did user specify a particular geometry?
if options.geometry:
ginga_shell.set_geometry(options.geometry)
# make the list of disabled plugins
if options.disable_plugins is not None:
disabled_plugins = options.disable_plugins.lower().split(',')
else:
disabled_plugins = settings.get('disable_plugins', [])
if not isinstance(disabled_plugins, list):
disabled_plugins = disabled_plugins.lower().split(',')
disabled_plugins = set(disabled_plugins)
# Add GUI log handler (for "Log" global plugin)
guiHdlr = GuiLogHandler(ginga_shell)
guiHdlr.setLevel(options.loglevel)
fmt = logging.Formatter(log.LOG_FORMAT)
guiHdlr.setFormatter(fmt)
logger.addHandler(guiHdlr)
# Set loader priorities, if user has saved any
# (see LoaderConfig plugin)
path = os.path.join(self.basedir, 'loaders.yml')
if os.path.exists(path):
try:
with open(path, 'r') as in_f:
loader_dct = yaml.safe_load(in_f.read())
# set saved priorities for openers
for mimetype, m_dct in loader_dct.items():
for name, l_dct in m_dct.items():
opener = loader.get_opener(name)
loader.add_opener(opener, [mimetype],
priority=l_dct['priority'],
note=opener.__doc__)
except Exception as e:
logger.error(f"failed to process loader file '{path}': {e}",
exc_info=True)
# Does user have a saved plugin setup? If so, check which
# plugins should be disabled, or have a customized category or
# workspace
plugin_file = settings.get('plugin_file', None)
if plugin_file is not None:
plugin_file = os.path.join(self.basedir, plugin_file)
if os.path.exists(plugin_file):
logger.info("Reading plugin file '%s'..." % (plugin_file))
try:
with open(plugin_file, 'r') as in_f:
buf = in_f.read()
_plugins = yaml.safe_load(buf)
for dct in _plugins:
plugin_name = self.get_plugin_name(dct)
if plugin_name in self.plugin_dct:
# we know about this plugin, override listed
# attributes
spec = self.plugin_dct[plugin_name]
for name in ['enabled', 'category', 'hidden',
'workspace', 'tab', 'menu',
'pfx', 'optray']:
if name in dct:
spec[name] = dct[name]
if spec['ptype'] == 'global':
spec['start'] = dct.get('start',
spec.get('start', False))
else:
# unknown plugin
spec = Bunch(dct)
self.add_plugin_spec(spec)
except Exception as e:
logger.error(f"Error reading plugin file: {e}",
exc_info=True)
# Load any custom global plugins named on command line or in
# general.cfg
if options.modules is not None:
global_plugins = options.modules.split(',')
else:
global_plugins = settings.get('global_plugins', [])
if not isinstance(global_plugins, list):
global_plugins = global_plugins.split(',')
for long_plugin_name in global_plugins:
if '.' in long_plugin_name:
tmpstr = long_plugin_name.split('.')
plugin_name = tmpstr[-1]
pfx = '.'.join(tmpstr[:-1])
else:
plugin_name = long_plugin_name
pfx = None
if plugin_name in self.plugin_dct:
spec = self.plugin_dct[plugin_name]
spec.enabled = True
spec.start = True
else:
menu_name = f"{plugin_name} [G]"
spec = Bunch(name=plugin_name, module=plugin_name,
ptype='global', tab=plugin_name,
menu=menu_name, category="Custom",
enabled=True, start=True,
workspace='right', pfx=pfx)
self.add_plugin_spec(spec)
# Load any custom local plugins named on command line or in
# general.cfg
if options.plugins is not None:
local_plugins = options.plugins.split(',')
else:
local_plugins = settings.get('local_plugins', [])
if not isinstance(local_plugins, list):
local_plugins = local_plugins.split(',')
for long_plugin_name in local_plugins:
if '.' in long_plugin_name:
tmpstr = long_plugin_name.split('.')
plugin_name = tmpstr[-1]
pfx = '.'.join(tmpstr[:-1])
else:
plugin_name = long_plugin_name
pfx = None
if plugin_name in self.plugin_dct:
spec = self.plugin_dct[plugin_name]
spec.enabled = True
else:
spec = Bunch(module=plugin_name, workspace='dialogs',
ptype='local', category="Custom",
hidden=False, pfx=pfx, enabled=True)
self.add_plugin_spec(spec)
# Mark disabled plugins (command-line has precedence)
for spec in self.plugins:
if spec.module.lower() in disabled_plugins:
spec['enabled'] = False
# submit plugin specs to shell
ginga_shell.set_plugins(self.plugins)
# start any plugins that have start=True
ginga_shell.boot_plugins()
ginga_shell.update_pending()
# TEMP?
tab_names = [name.lower()
for name in ginga_shell.ds.get_tabnames(group=None)]
if 'info' in tab_names:
ginga_shell.ds.raise_tab('Info')
if 'synopsis' in tab_names:
ginga_shell.ds.raise_tab('Synopsis')
if 'thumbs' in tab_names:
ginga_shell.ds.raise_tab('Thumbs')
# Add custom channels
if options.channels is not None:
channels = options.channels.split(',')
else:
channels = settings.get('channels', self.channels)
if not isinstance(channels, list):
channels = channels.split(',')
if len(channels) > 0:
# populate the initial channel lineup
for item in channels:
if isinstance(item, str):
chname, wsname = item, None
else:
chname, wsname = item
ginga_shell.add_channel(chname, workspace=wsname)
ginga_shell.change_channel(chname)
# User configuration (custom star catalogs, etc.)
if have_app_config:
try:
if hasattr(app_config, 'post_gui_config'):
app_config.post_gui_config(ginga_shell)
except Exception as e:
logger.error("Error processing %s config file: %s" % (
self.appname, str(e)), exc_info=True)
# Redirect warnings to logger
for hdlr in logger.handlers:
logging.getLogger('py.warnings').addHandler(hdlr)
# Display banner the first time run, unless suppressed
show_banner = (self.appname == 'ginga')
try:
show_banner = settings.get('showBanner')
except KeyError:
# disable for subsequent runs
settings.set(showBanner=False)
if not os.path.exists(settings.preffile):
settings.save()
if (not options.nosplash) and (len(args) == 0) and show_banner:
ginga_shell.banner()
# Handle inputs like "*.fits[ext]" that sys cmd cannot auto expand.
expanded_args = []
for imgfile in args:
if '*' in imgfile:
if '[' in imgfile and imgfile.endswith(']'):
s = imgfile.split('[')
ext = '[' + s[1]
imgfile = s[0]
else:
ext = ''
for fname in glob.iglob(imgfile):
expanded_args.append(fname + ext)
else:
expanded_args.append(imgfile)
if len(channels) > 0:
# Assume remaining arguments are fits files and load them.
if not options.separate_channels:
chname = channels[0]
ginga_shell.gui_do(ginga_shell.open_uris, expanded_args,
chname=chname)
else:
i = 0
num_channels = len(channels)
for imgfile in expanded_args:
if i < num_channels:
chname = channels[i]
i = i + 1
else:
channel = ginga_shell.add_channel_auto()
chname = channel.name
ginga_shell.gui_do(ginga_shell.open_uris, [imgfile],
chname=chname)
try:
try:
# if there is a network component, start it
if hasattr(ginga_shell, 'start'):
logger.info("starting network interface...")
ginga_shell.start()
# Main loop to handle GUI events
logger.info("entering mainloop...")
ginga_shell.mainloop(timeout=0.001)
except KeyboardInterrupt:
logger.error("Received keyboard interrupt!")
finally:
logger.info("Shutting down...")
ev_quit.set()
sys.exit(0)
def reference_viewer(sys_argv):
"""Create reference viewer from command line."""
viewer = ReferenceViewer(layout=default_layout, plugins=plugins,
appname='ginga', basedir=None, channels=['Image'])
viewer.add_default_plugins()
viewer.add_separately_distributed_plugins()
# Parse command line options with argparse module
from argparse import ArgumentParser
argprs = ArgumentParser(description="Run the Ginga reference viewer.")
viewer.add_default_options(argprs)
argprs.add_argument('-V', '--version', action='version',
version='%(prog)s {}'.format(version.version))
(options, args) = argprs.parse_known_args(sys_argv[1:])
if options.display:
os.environ['DISPLAY'] = options.display
viewer.main(options, args)
def _main():
"""Run from command line."""
reference_viewer(sys.argv)
# END