/usr/lib/python3/dist-packages/ginga/misc/ParamSet.py is in python3-ginga 2.6.1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | #
# ParamSet.py -- Groups of widgets holding parameters
#
# Eric Jeschke (eric@naoj.org)
#
# Copyright (c) Eric R. Jeschke. All rights reserved.
# This is open-source software licensed under a BSD license.
# Please see the file LICENSE.txt for details.
#
from ginga.misc import Callback, Bunch
from ginga.gw import Widgets
class Param(Bunch.Bunch):
pass
class ParamSet(Callback.Callbacks):
def __init__(self, logger, obj):
super(ParamSet, self).__init__()
self.logger = logger
self.paramlst = []
self.obj = obj
self.widgets = {}
for name in ('changed', ):
self.enable_callback(name)
def get_widget_value(self, widget, param):
if hasattr(widget, 'get_text'):
return widget.get_text()
elif hasattr(widget, 'get_index'):
index = widget.get_index()
value = param.valid[index]
return value
elif hasattr(widget, 'get_value'):
return widget.get_value()
elif hasattr(widget, 'get_state'):
return widget.get_state()
def set_widget_value(self, widget, param, value):
if hasattr(widget, 'set_text'):
widget.set_text(str(value))
elif hasattr(widget, 'set_index'):
idx = param.valid.index(value)
widget.set_index(idx)
elif hasattr(widget, 'set_value'):
widget.set_value(value)
elif hasattr(widget, 'set_state'):
widget.set_state(value)
def build_params(self, paramlst, orientation='vertical'):
# construct a set of widgets for the parameters
captions = []
for param in paramlst:
title = param.get('title', param.name)
wtype = param.get('widget', None)
ptype = param.get('type', str)
if wtype is None:
# set default widget type if none specified
wtype = 'entry'
if param.has_key('valid'):
wtype = 'combobox'
captions.append((title+':', 'label', param.name, wtype))
w, b = Widgets.build_info(captions, orientation=orientation)
# fill with default values and tool tips
for param in paramlst:
name = param.name
widget = b[name]
valid = param.get('valid', None)
if hasattr(widget, 'set_index') and valid is not None:
# configure combobox
for value in valid:
widget.append_text(str(value))
elif hasattr(widget, 'set_limits') and param.has_key('incr'):
# configure spinbox/slider
widget.set_limits(param.min, param.max,
incr_value=param.incr)
wtype = param.get('widget', None)
if wtype == 'spinfloat':
widget.set_decimals(param.get('decimals', 4))
# if we have a cached value for the parameter, use it
try:
value = getattr(self.obj, name)
self.set_widget_value(widget, param, value)
except (AttributeError, KeyError):
# otherwise initialize to the default value, if available
if 'default' in param:
value = param.default
self.set_widget_value(widget, param, value)
setattr(self.obj, name, value)
if 'description' in param:
widget.set_tooltip(param.description)
if widget.has_callback('activated'):
widget.add_callback('activated', self._value_changed_cb)
elif widget.has_callback('value-changed'):
widget.add_callback('value-changed', self._value_changed_cb)
self.paramlst = paramlst
self.widgets = b
return w
def _get_params(self):
args, kwdargs = [], {}
for param in self.paramlst:
w = self.widgets[param.name]
value = self.get_widget_value(w, param)
if ('type' in param) and (value is not None):
# hack
if value == 'None':
value = None
else:
value = param.type(value)
setattr(self.obj, param.name, value)
if param.has_key('argpos'):
# TODO: ensure arg positioning is correct
args.append(value)
else:
kwdargs[param.name] = value
return args, kwdargs
def get_params(self):
return self._get_params()
def params_to_widgets(self):
for param in self.paramlst:
name = param.name
value = getattr(self.obj, name)
self.set_widget_value(self.widgets[name], param,
value)
def sync_params(self):
return self.params_to_widgets()
def widgets_to_params(self):
for param in self.paramlst:
w = self.widgets[param.name]
value = self.get_widget_value(w, param)
if ('type' in param) and (value is not None):
# hack
if value == 'None':
value = None
else:
value = param.type(value)
setattr(self.obj, param.name, value)
def _value_changed_cb(self, w, *args):
self._get_params()
self.make_callback('changed', self.obj)
#END
|