InvariantPerspective.py @ f159d1b

Last change on this file since f159d1b was 457d961, checked in by Celine Durniak <celine.durniak@…>, 7 years ago
Corrected bugs in display of new GUI (angstrom, size of line edit)
Property mode set to `100644`
File size: 24.4 KB

Rev	Line
[f721030]	1	# global
	2	import sys
	3	import os
	4	from PyQt4 import QtCore
	5	from PyQt4 import QtGui
	6	from PyQt4 import QtWebKit
	7
	8	from twisted.internet import threads
[1042dba]	9	from twisted.internet import reactor
[f721030]	10
	11	# sas-global
	12	from sas.sascalc.invariant import invariant
[dc5ef15]	13	from sas.qtgui.Plotting.PlotterData import Data1D
[83eb5208]	14	import sas.qtgui.Utilities.GuiUtils as GuiUtils
[f721030]	15
	16	# local
[469b4622]	17	from UI.TabbedInvariantUI import Ui_tabbedInvariantUI
[f721030]	18	from InvariantDetails import DetailsDialog
	19	from InvariantUtils import WIDGETS
	20
	21	# The minimum q-value to be used when extrapolating
	22	Q_MINIMUM = 1e-5
	23	# The maximum q-value to be used when extrapolating
	24	Q_MAXIMUM = 10
	25	# the ratio of maximum q value/(qmax of data) to plot the theory data
	26	Q_MAXIMUM_PLOT = 3
	27
	28
	29	class MyModel(object):
	30	def __init__(self):
	31	self._model = QtGui.QStandardItemModel(self)
	32
	33	def addItem(self, item):
	34	item = QtGui.QStandardItem(str(item))
	35	self._model.appendRow(item)
	36
[469b4622]	37	class InvariantWindow(QtGui.QDialog, Ui_tabbedInvariantUI):
[f721030]	38	# The controller which is responsible for managing signal slots connections
	39	# for the gui and providing an interface to the data model.
[83d6249]	40	name = "Invariant" # For displaying in the combo box
[0979dfb]	41	#def __init__(self, manager=None, parent=None):
	42	def __init__(self, parent=None):
	43	#super(InvariantWindow, self).__init__(parent)
	44	super(InvariantWindow, self).__init__()
[469b4622]	45	self.setupUi(self)
	46
[f721030]	47	self.setWindowTitle("Invariant Perspective")
[e540cd2]	48
[f721030]	49	# initial input params
	50	self._background = 0.0
	51	self._scale = 1.0
	52	self._contrast = 1.0
	53	self._porod = 1.0
	54	self._npoints_low = 10
	55	self._npoints_high = 10
	56	self._power_low = 4
	57
[0979dfb]	58	self._manager = parent
	59	#self._manager = manager
[6fd4e36]	60	self._reactor = reactor
[a281ab8]	61	self._model_item = QtGui.QStandardItem()
[f721030]	62
	63	self._helpView = QtWebKit.QWebView()
	64	self.detailsDialog = DetailsDialog(self)
	65
	66	self._low_extrapolate = False
	67	self._low_guinier = True
	68	self._low_fit = True
	69	self._high_extrapolate = False
	70	self._high_power_value = False
	71
[d813cad8]	72	# no reason to have this widget resizable
	73	self.setFixedSize(self.minimumSizeHint())
[28a84e9]	74
[0cd8612]	75	self.communicate = GuiUtils.Communicate()
[f721030]	76
[469b4622]	77	self._data = None
	78	self._path = ""
	79
[b1e36a3]	80	self._allow_close = False
	81
[f721030]	82	# Mask file selector
	83	###################################################
[469b4622]	84	#self._path = "cyl_400_20.txt"
	85	#from sas.sascalc.dataloader.loader import Loader
	86	#loader = Loader()
	87	#try:
	88	# self._data = loader.load(self._path)
	89	#except:
	90	# raise
[f721030]	91	###################################################
	92
	93	self.lineEdit_8.setText(str(Q_MINIMUM))
	94	self.lineEdit_9.setText(str(Q_MAXIMUM))
	95
	96	# Let's choose the Standard Item Model.
	97	self.model = QtGui.QStandardItemModel(self)
	98
	99	# Connect buttons to slots.
	100	# Needs to be done early so default values propagate properly.
	101	self.setupSlots()
	102
	103	# Set up the model.
	104	self.setupModel()
	105
	106	# Set up the mapper
	107	self.setupMapper()
	108
[457d961]	109	new_font = 'font-family: -apple-system, "Helvetica Neue", "Ubuntu";'
	110	self.label_2.setStyleSheet(new_font)
	111	self.label_24.setStyleSheet(new_font)
	112	self.label_27.setStyleSheet(new_font)
	113
[b1e36a3]	114	def setClosable(self, value=True):
	115	"""
	116	Allow outsiders close this widget
	117	"""
	118	assert isinstance(value, bool)
	119
	120	self._allow_close = value
	121
	122	def closeEvent(self, event):
	123	"""
	124	Overwrite QDialog close method to allow for custom widget close
	125	"""
	126	if self._allow_close:
	127	# reset the closability flag
	128	self.setClosable(value=False)
	129	event.accept()
	130	else:
	131	event.ignore()
	132	# Maybe we should just minimize
	133	self.setWindowState(QtCore.Qt.WindowMinimized)
[e540cd2]	134
	135	def communicator(self):
	136	""" Getter for the communicator """
[5032ea68]	137	return self.communicate
	138
[f721030]	139	def updateFromModel(self):
	140	"""
	141	update the globals based on the data in the model
	142	"""
	143	self._background = float(self.model.item(WIDGETS.W_BACKGROUND).text())
	144	self._contrast = float(self.model.item(WIDGETS.W_CONTRAST).text())
	145	self._scale = float(self.model.item(WIDGETS.W_SCALE).text())
	146
	147	# High extrapolate
	148	self._low_extrapolate = ( str(self.model.item(WIDGETS.W_ENABLE_LOWQ).text()) == 'true')
	149	self._low_points = float(self.model.item(WIDGETS.W_NPTS_LOWQ).text())
	150	self._low_guinier = ( str(self.model.item(WIDGETS.W_LOWQ_GUINIER).text()) == 'true')
	151	self._low_fit = ( str(self.model.item(WIDGETS.W_LOWQ_FIT).text()) == 'true')
	152	self._low_power_value = float(self.model.item(WIDGETS.W_LOWQ_POWER_VALUE).text())
	153
	154	# High extrapolating
	155	self._high_extrapolate = ( str(self.model.item(WIDGETS.W_ENABLE_HIGHQ).text()) == 'true')
	156	self._high_points = float(self.model.item(WIDGETS.W_NPTS_HIGHQ).text())
	157	self._high_fit = ( str(self.model.item(WIDGETS.W_HIGHQ_FIT).text()) == 'true')
	158	self._high_power_value = float(self.model.item(WIDGETS.W_HIGHQ_POWER_VALUE).text())
	159
[a281ab8]	160	def calculateInvariant(self):
[f721030]	161	"""
	162	Use twisted to thread the calculations away.
	163	"""
	164	# Find out if extrapolation needs to be used.
	165	extrapolation = None
	166	if self._low_extrapolate and not self._high_extrapolate:
	167	extrapolation = "low"
	168	elif not self._low_extrapolate and self._high_extrapolate:
	169	extrapolation = "high"
	170	elif self._low_extrapolate and self._high_extrapolate:
	171	extrapolation = "both"
	172	try:
	173	# modify the Calculate button to indicate background process
	174	self.pushButton.setText("Calculating...")
	175	self.pushButton.setEnabled(False)
	176	self.style = self.pushButton.styleSheet()
	177	self.pushButton.setStyleSheet("background-color: rgb(255, 255, 0); color: rgb(0, 0, 0)")
	178	# Send the calculations to separate thread.
	179	d = threads.deferToThread(self.calculateThread, extrapolation)
	180	# Add deferred callback for call return
	181	d.addCallback(self.plotResult)
	182	except Exception as ex:
	183	# Set the button back to available
	184	self.pushButton.setEnabled(True)
	185	self.pushButton.setText("Calculate")
	186	self.pushButton.setStyleSheet(self.style)
	187
[5032ea68]	188
[f721030]	189	def plotResult(self, model):
	190	"""
	191	"""
	192	self.model = model
	193	self.mapper.toFirst()
	194
	195	# Set the button back to available
	196	self.pushButton.setEnabled(True)
	197	self.pushButton.setText("Calculate")
	198	self.pushButton.setStyleSheet(self.style)
	199
[a281ab8]	200	# Send the modified model item to DE for keeping in the model
	201	self.communicate.updateModelFromPerspectiveSignal.emit(self._model_item)
[5032ea68]	202
[f721030]	203
	204	def calculateThread(self, extrapolation):
	205	"""
[5032ea68]	206	Perform Invariant calculations.
	207
	208	TODO: Create a dictionary of results to be sent to DE on completion.
[f721030]	209	"""
	210	self.updateFromModel()
	211
	212	qstar_low = 0.0
	213	qstar_low_err = 0.0
	214	qstar_high = 0.0
	215	qstar_high_err = 0.0
	216	qstar_total = 0.0
	217	qstar_total_low_err = 0.0
	218
	219	# Prepare the invariant object
	220	inv = invariant.InvariantCalculator(data=self._data,
	221	background = self._background,
	222	scale = self._scale)
	223
	224	if self._low_extrapolate:
	225	function_low = "power_law"
	226	if self._low_guinier:
	227	function_low = "guinier"
	228	if self._low_fit:
	229	self._low_power_value = None
	230	inv.set_extrapolation(range="low",
	231	npts=self._low_points,
	232	function=function_low,
	233	power=self._low_power_value)
	234
	235	if self._high_extrapolate:
	236	function_low = "power_law"
	237	inv.set_extrapolation(range="high",
	238	npts=self._high_points,
	239	function=function_low,
	240	power=self._low_power_value)
	241
	242	#Compute invariant
	243	# TODO: proper exception handling and logic -
	244	# display info, update lineedits, don't run extrapolations etc.
	245	calculation_failed = False
	246	try:
	247	qstar_total, qstar_total_error = inv.get_qstar_with_error()
	248	except Exception as ex:
	249	calculation_failed = True
	250	# Display relevant information
	251	item = QtGui.QStandardItem("ERROR")
	252	self.model.setItem(WIDGETS.W_INVARIANT, item)
	253	item = QtGui.QStandardItem("ERROR")
	254	self.model.setItem(WIDGETS.W_INVARIANT_ERR, item)
	255	try:
	256	volume_fraction, volume_fraction_error = \
	257	inv.get_volume_fraction_with_error(self._contrast)
	258	except Exception as ex:
	259	calculation_failed = True
	260	# Display relevant information
	261	item = QtGui.QStandardItem("ERROR")
	262	self.model.setItem(WIDGETS.W_VOLUME_FRACTION, item)
	263	item = QtGui.QStandardItem("ERROR")
	264	self.model.setItem(WIDGETS.W_VOLUME_FRACTION_ERR, item)
	265	try:
[28a84e9]	266	surface, surface_error = \
[f721030]	267	inv.get_surface_with_error(self._contrast, self._porod)
	268	except Exception as ex:
	269	calculation_failed = True
	270	# Display relevant information
	271	item = QtGui.QStandardItem("ERROR")
	272	self.model.setItem(WIDGETS.W_SPECIFIC_SURFACE, item)
	273	item = QtGui.QStandardItem("ERROR")
	274	self.model.setItem(WIDGETS.W_SPECIFIC_SURFACE_ERR, item)
	275
	276	if(calculation_failed):
	277	# TODO: NOTIFY THE GUI MANAGER!!
	278	self.mapper.toFirst()
	279	return self.model
	280
	281	if self._low_extrapolate:
	282	# for presentation in InvariantDetails
	283	qstar_low, qstar_low_err = inv.get_qstar_low()
	284	extrapolated_data = inv.get_extra_data_low(self._low_points)
	285	power_low = inv.get_extrapolation_power(range='low')
	286
	287	#inv.data = extrapolated_data
	288	#qstar_total, qstar_total_error = inv.get_qstar_with_error()
	289
	290	# Plot the chart
[a281ab8]	291	title = "Low-Q extrapolation"
[f721030]	292
[1042dba]	293	# Convert the data into plottable
	294	extrapolated_data = self._manager.createGuiData(extrapolated_data)
[aadf0af1]	295	extrapolated_data.name = title
[b789967]	296	extrapolated_data.title = title
[1042dba]	297
[a281ab8]	298	# Add the plot to the model item
[1042dba]	299	# variant_item = QtCore.QVariant(self._plotter)
	300	variant_item = QtCore.QVariant(extrapolated_data)
	301
	302	# This needs to run in the main thread
[8548d739]	303	reactor.callFromThread(GuiUtils.updateModelItemWithPlot,
	304	self._model_item, variant_item, title)
[f721030]	305
	306	if self._high_extrapolate:
	307	# for presentation in InvariantDetails
	308	qmax_plot = Q_MAXIMUM_PLOT * max(self._data.x)
	309	if qmax_plot > Q_MAXIMUM:
	310	qmax_plot = Q_MAXIMUM
	311	qstar_high, qstar_high_err = inv.get_qstar_high()
	312	power_high = inv.get_extrapolation_power(range='high')
	313	high_out_data = inv.get_extra_data_high(q_end=qmax_plot, npts=500)
	314
[b789967]	315	# Plot the chart
	316	title = "High-Q extrapolation"
	317
[1042dba]	318	# Convert the data into plottable
	319	high_out_data = self._manager.createGuiData(high_out_data)
[aadf0af1]	320	high_out_data.name = title
[b789967]	321	high_out_data.title = title
[f721030]	322
[a281ab8]	323	# Add the plot to the model item
[1042dba]	324	# variant_item = QtCore.QVariant(self._plotter)
	325	variant_item = QtCore.QVariant(high_out_data)
	326	# This needs to run in the main thread
[8548d739]	327	reactor.callFromThread(GuiUtils.updateModelItemWithPlot,
	328	self._model_item, variant_item, title)
[f721030]	329
	330	item = QtGui.QStandardItem(str(float('%.5g'% volume_fraction)))
	331	self.model.setItem(WIDGETS.W_VOLUME_FRACTION, item)
	332	item = QtGui.QStandardItem(str(float('%.5g'% volume_fraction_error)))
	333	self.model.setItem(WIDGETS.W_VOLUME_FRACTION_ERR, item)
	334	item = QtGui.QStandardItem(str(float('%.5g'% surface)))
	335	self.model.setItem(WIDGETS.W_SPECIFIC_SURFACE, item)
	336	item = QtGui.QStandardItem(str(float('%.5g'% surface_error)))
	337	self.model.setItem(WIDGETS.W_SPECIFIC_SURFACE_ERR, item)
	338	item = QtGui.QStandardItem(str(float('%.5g'% qstar_total)))
	339	self.model.setItem(WIDGETS.W_INVARIANT, item)
	340	item = QtGui.QStandardItem(str(float('%.5g'% qstar_total_error)))
	341	self.model.setItem(WIDGETS.W_INVARIANT_ERR, item)
	342
	343	#item = QtGui.QStandardItem(str(float('%.5g'% qstar_total)))
	344	#self.model.setItem(WIDGETS.D_TOTAL_QSTAR, item)
	345	#item = QtGui.QStandardItem(str(float('%.5g'% qstar_total_err)))
	346	#self.model.setItem(WIDGETS.D_TOTAL_QSTAR_ERR, item)
	347	item = QtGui.QStandardItem(str(float('%.5g'% qstar_low)))
	348	self.model.setItem(WIDGETS.D_LOW_QSTAR, item)
	349	item = QtGui.QStandardItem(str(float('%.5g'% qstar_low_err)))
	350	self.model.setItem(WIDGETS.D_LOW_QSTAR_ERR, item)
	351	item = QtGui.QStandardItem(str(float('%.5g'% qstar_high)))
	352	self.model.setItem(WIDGETS.D_HIGH_QSTAR, item)
	353	item = QtGui.QStandardItem(str(float('%.5g'% qstar_high_err)))
	354	self.model.setItem(WIDGETS.D_HIGH_QSTAR_ERR, item)
	355
	356	self.mapper.toFirst()
	357
	358	return self.model
	359
[5032ea68]	360	def title(self):
	361	"""
	362	Perspective name
	363	"""
	364	return "Invariant panel"
[f721030]	365
	366	def status(self):
	367	"""
	368	"""
	369	self.detailsDialog.setModel(self.model)
	370	self.detailsDialog.showDialog()
	371
	372	def help(self):
	373	"""
	374	"""
[b0c5e8c]	375	_TreeLocation = GuiUtils.HELP_DIRECTORY_LOCATION + \
[31c5b58]	376	"/user/sasgui/perspectives/invariant/invariant_help.html"
[f721030]	377	self._helpView.load(QtCore.QUrl(_TreeLocation))
	378	self._helpView.show()
	379
	380	def setupSlots(self):
[a281ab8]	381	self.pushButton.clicked.connect(self.calculateInvariant)
[f721030]	382	self.pushButton_2.clicked.connect(self.status)
	383	self.pushButton_3.clicked.connect(self.help)
	384
	385	self.radioButton.toggled.connect(self.lowGuinierAndPowerToggle)
	386	self.radioButton_8.toggled.connect(self.hiFitAndFixToggle)
	387
	388	self.radioButton_3.toggled.connect(self.lowFitAndFixToggle)
	389
	390	# Bug workaround for QDataWidgetMapper() not reacting to checkbox clicks.
	391	# https://bugreports.qt.io/browse/QTBUG-1818
	392	self.checkBox.clicked.connect(self.setFocus)
	393	self.checkBox_2.clicked.connect(self.setFocus)
	394
	395	self.model.itemChanged.connect(self.modelChanged)
	396
	397	def modelChanged(self, item):
	398	"""
	399	"""
	400	if item.row() == WIDGETS.W_ENABLE_LOWQ:
	401	toggle = (str(item.text()) == 'true')
	402	self._low_extrapolate = toggle
	403	self.lowQToggle(toggle)
	404	elif item.row() == WIDGETS.W_ENABLE_HIGHQ:
	405	toggle = (str(item.text()) == 'true')
	406	self._high_extrapolate = toggle
	407	self.highQToggle(toggle)
	408
	409	def lowGuinierAndPowerToggle(self, toggle):
	410	"""
	411	"""
	412	self._low_guinier = toggle
	413	toggle = not toggle
	414	self.lineEdit_11.setEnabled(toggle)
	415	self.radioButton_3.setEnabled(toggle)
	416	self.radioButton_4.setEnabled(toggle)
	417	self.lineEdit_11.setEnabled(toggle and (not self._low_fit))
	418
	419	def lowFitAndFixToggle(self, toggle):
	420	"""
	421	"""
	422	self._low_fit = toggle
	423	toggle = not toggle
	424	self.lineEdit_11.setEnabled(toggle)
	425
	426	def hiFitAndFixToggle(self, toggle):
	427	"""
	428	"""
	429	self.lineEdit_13.setEnabled(toggle)
	430
	431	def highQToggle(self, clicked):
	432	"""
	433	Disable/enable High Q extrapolation
	434	"""
	435	self.radioButton_7.setEnabled(clicked)
	436	self.radioButton_8.setEnabled(clicked)
	437	self.lineEdit_12.setEnabled(clicked)
	438	self.lineEdit_13.setEnabled(clicked)
	439
	440	def lowQToggle(self, clicked):
	441	"""
	442	Disable/enable Low Q extrapolation
	443	"""
	444	self.radioButton.setEnabled(clicked)
	445	self.radioButton_2.setEnabled(clicked)
	446	self.lineEdit_11.setEnabled(clicked and not self._low_fit)
	447
	448	# Enable subelements
	449	self.radioButton_3.setEnabled(clicked and not self._low_guinier)
	450	self.radioButton_4.setEnabled(clicked and not self._low_guinier)
	451	self.lineEdit_10.setEnabled(clicked and not self._low_guinier)
	452
	453	def setupModel(self):
	454
	455	# filename
	456	item = QtGui.QStandardItem(self._path)
	457	self.model.setItem(WIDGETS.W_FILENAME, item)
	458
	459	# add Q parameters to the model
[469b4622]	460	#qmin = min(self._data.x)
	461	qmin = 0.0
[f721030]	462	item = QtGui.QStandardItem(str(qmin))
	463	self.model.setItem(WIDGETS.W_QMIN, item)
[469b4622]	464	qmax = 0.0
	465	item = QtGui.QStandardItem(str(qmax))
[f721030]	466	self.model.setItem(WIDGETS.W_QMAX, item)
	467
	468	# add custom input params
	469	item = QtGui.QStandardItem(str(self._background))
	470	self.model.setItem(WIDGETS.W_BACKGROUND, item)
	471	item = QtGui.QStandardItem(str(self._contrast))
	472	self.model.setItem(WIDGETS.W_CONTRAST, item)
	473	item = QtGui.QStandardItem(str(self._scale))
	474	self.model.setItem(WIDGETS.W_SCALE, item)
	475
	476	# Dialog elements
	477	itemf = QtGui.QStandardItem("false")
	478	self.model.setItem(WIDGETS.W_ENABLE_HIGHQ, itemf)
	479	itemf = QtGui.QStandardItem("false")
	480	self.model.setItem(WIDGETS.W_ENABLE_LOWQ, itemf)
	481
	482	item = QtGui.QStandardItem(str(self._npoints_low))
	483	self.model.setItem(WIDGETS.W_NPTS_LOWQ, item)
	484	item = QtGui.QStandardItem(str(self._npoints_high))
	485	self.model.setItem(WIDGETS.W_NPTS_HIGHQ, item)
	486
	487	itemt = QtGui.QStandardItem("true")
	488	self.model.setItem(WIDGETS.W_LOWQ_GUINIER, itemt)
	489
	490	itemt = QtGui.QStandardItem("true")
	491	self.model.setItem(WIDGETS.W_LOWQ_FIT, itemt)
	492	item = QtGui.QStandardItem(str(self._power_low))
	493	self.model.setItem(WIDGETS.W_LOWQ_POWER_VALUE, item)
	494
	495	itemt = QtGui.QStandardItem("true")
	496	self.model.setItem(WIDGETS.W_HIGHQ_FIT, itemt)
	497	item = QtGui.QStandardItem(str(self._power_low))
	498	self.model.setItem(WIDGETS.W_HIGHQ_POWER_VALUE, item)
	499
	500
	501	def setupMapper(self):
	502	# Set up the mapper.
	503	self.mapper = QtGui.QDataWidgetMapper(self)
	504	self.mapper.setOrientation(QtCore.Qt.Vertical)
	505	self.mapper.setModel(self.model)
	506
	507	# Set up the view on the model for testing
	508	# self.tableView.setModel(self.model)
	509
	510	# Filename
	511	self.mapper.addMapping(self.lineEdit, WIDGETS.W_FILENAME)
	512	# Qmin/Qmax
	513	self.mapper.addMapping(self.lineEdit_2, WIDGETS.W_QMIN)
	514	self.mapper.addMapping(self.lineEdit_3, WIDGETS.W_QMAX)
	515
	516	# Background
	517	self.mapper.addMapping(self.lineEdit_4, WIDGETS.W_BACKGROUND)
	518	# Scale
	519	self.mapper.addMapping(self.lineEdit_5, WIDGETS.W_SCALE)
	520	# Contrast
	521	self.mapper.addMapping(self.lineEdit_6, WIDGETS.W_CONTRAST)
	522
	523	# Lowq/Highq items
	524	self.mapper.addMapping(self.checkBox, WIDGETS.W_ENABLE_LOWQ)
	525	self.mapper.addMapping(self.checkBox_2, WIDGETS.W_ENABLE_HIGHQ)
	526
	527	self.mapper.addMapping(self.lineEdit_10, WIDGETS.W_NPTS_LOWQ)
	528	self.mapper.addMapping(self.radioButton, WIDGETS.W_LOWQ_GUINIER)
	529
	530	self.mapper.addMapping(self.radioButton_3, WIDGETS.W_LOWQ_FIT)
	531	self.mapper.addMapping(self.lineEdit_11, WIDGETS.W_LOWQ_POWER_VALUE)
	532
	533	self.mapper.addMapping(self.radioButton_7, WIDGETS.W_HIGHQ_FIT)
	534	self.mapper.addMapping(self.lineEdit_13, WIDGETS.W_HIGHQ_POWER_VALUE)
	535
	536	# Output
	537	self.mapper.addMapping(self.lineEdit_14, WIDGETS.W_VOLUME_FRACTION)
	538	self.mapper.addMapping(self.lineEdit_15, WIDGETS.W_VOLUME_FRACTION_ERR)
	539	self.mapper.addMapping(self.lineEdit_16, WIDGETS.W_SPECIFIC_SURFACE)
	540	self.mapper.addMapping(self.lineEdit_17, WIDGETS.W_SPECIFIC_SURFACE_ERR)
	541	self.mapper.addMapping(self.lineEdit_19, WIDGETS.W_INVARIANT)
	542	self.mapper.addMapping(self.lineEdit_18, WIDGETS.W_INVARIANT_ERR)
	543
	544	self.mapper.toFirst()
	545
[ee18d33]	546	def setData(self, data_item, is_batch=False):
[a281ab8]	547	"""
	548	Obtain a QStandardItem object and dissect it to get Data1D/2D
	549	Pass it over to the calculator
	550	"""
	551	if not isinstance(data_item, list):
	552	msg = "Incorrect type passed to the Invariant Perspective"
	553	raise AttributeError, msg
	554
	555	if not isinstance(data_item[0], QtGui.QStandardItem):
	556	msg = "Incorrect type passed to the Invariant Perspective"
	557	raise AttributeError, msg
	558
	559	self._model_item = data_item[0]
	560
	561	# Extract data on 1st child - this is the Data1D/2D component
[8548d739]	562	data = GuiUtils.dataFromItem(self._model_item)
[469b4622]	563	self.model.item(WIDGETS.W_FILENAME).setData(QtCore.QVariant(self._model_item.text()))
	564
	565	##### DEBUG ####
	566	# set data in the debug tree view window
	567	self.treeView.setModel(self.model)
[a281ab8]	568
	569	self.calculate(data_list=[data])
	570
	571	def calculate(self, data_list=None):
[f721030]	572	"""
	573	receive a list of data and compute invariant
[a281ab8]	574
	575	TODO: pass warnings/messages to log
[f721030]	576	"""
	577	msg = ""
	578	data = None
	579	if data_list is None:
	580	data_list = []
	581	if len(data_list) >= 1:
	582	if len(data_list) == 1:
	583	data = data_list[0]
	584	else:
	585	data_1d_list = []
	586	data_2d_list = []
	587	error_msg = ""
	588	# separate data into data1d and data2d list
	589	for data in data_list:
	590	if data is not None:
	591	if issubclass(data.__class__, Data1D):
	592	data_1d_list.append(data)
	593	else:
	594	error_msg += " %s type %s \n" % (str(data.name),
	595	str(data.__class__.__name__))
	596	data_2d_list.append(data)
	597	if len(data_2d_list) > 0:
	598	msg = "Invariant does not support the following data types:\n"
	599	msg += error_msg
	600	if len(data_1d_list) == 0:
	601	# remake this as a qt event
	602	#wx.PostEvent(self.parent, StatusEvent(status=msg, info='error'))
	603	return
[a281ab8]	604
	605	# TODO: add msgbox for data choice
	606	#msg += "Invariant panel does not allow multiple data!\n"
	607	#msg += "Please select one.\n"
[f721030]	608	#if len(data_list) > 1:
	609	#from invariant_widgets import DataDialog
	610	#dlg = DataDialog(data_list=data_1d_list, text=msg)
	611	#if dlg.ShowModal() == wx.ID_OK:
	612	# data = dlg.get_data()
	613	#else:
	614	# data = None
	615	#dlg.Destroy()
	616
	617	if data is None:
	618	msg += "invariant receives no data. \n"
	619	#wx.PostEvent(self.parent, StatusEvent(status=msg, info='error'))
	620	return
	621	if not issubclass(data.__class__, Data1D):
	622	msg += "invariant cannot be computed for data of "
	623	msg += "type %s\n" % (data.__class__.__name__)
	624	#wx.PostEvent(self.parent, StatusEvent(status=msg, info='error'))
	625	return
	626	else:
	627	#wx.PostEvent(self.parent, NewPlotEvent(plot=data, title=data.title))
	628	try:
	629	self._data = data
	630	self._path = "unique path"
[a281ab8]	631	self.calculateInvariant()
[f721030]	632	except:
	633	msg = "Invariant Set_data: " + str(sys.exc_value)
	634	#wx.PostEvent(self.parent, StatusEvent(status=msg, info="error"))
	635	else:
	636	msg = "invariant cannot be computed for data of "
	637	msg += "type %s" % (data.__class__.__name__)
	638	#wx.PostEvent(self.parent, StatusEvent(status=msg, info='error'))
	639
[5032ea68]	640	def allowBatch(self):
	641	"""
	642	Tell the caller that we don't accept multiple data instances
	643	"""
	644	return False
[f721030]	645
	646	if __name__ == "__main__":
	647	app = QtGui.QApplication([])
	648	import qt4reactor
	649	qt4reactor.install()
	650	# DO NOT move the following import to the top!
	651	# (unless you know what you're doing)
	652	from twisted.internet import reactor
	653	dlg = InvariantWindow(reactor)
	654	dlg.show()
	655	reactor.run()

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SasView

source: sasview/src/sas/qtgui/Perspectives/Invariant/InvariantPerspective.py @ f159d1b

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