DataExplorer.py @ 87dfca4

ESS_GUIESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalc

Last change on this file since 87dfca4 was aed0532, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Updated references to help files
Property mode set to `100644`
File size: 41.5 KB

Line
1	# global
2	import sys
3	import os
4	import time
5	import logging
6
7	from PyQt5 import QtCore
8	from PyQt5 import QtGui
9	from PyQt5 import QtWidgets
10
11	from twisted.internet import threads
12
13	# SASCALC
14	from sas.sascalc.dataloader.loader import Loader
15
16	# QTGUI
17	import sas.qtgui.Utilities.GuiUtils as GuiUtils
18	import sas.qtgui.Plotting.PlotHelper as PlotHelper
19
20	from sas.qtgui.Plotting.PlotterData import Data1D
21	from sas.qtgui.Plotting.PlotterData import Data2D
22	from sas.qtgui.Plotting.Plotter import Plotter
23	from sas.qtgui.Plotting.Plotter2D import Plotter2D
24	from sas.qtgui.Plotting.MaskEditor import MaskEditor
25
26	from sas.qtgui.MainWindow.DataManager import DataManager
27	from sas.qtgui.MainWindow.DroppableDataLoadWidget import DroppableDataLoadWidget
28
29	import sas.qtgui.Perspectives as Perspectives
30
31	DEFAULT_PERSPECTIVE = "Fitting"
32
33	class DataExplorerWindow(DroppableDataLoadWidget):
34	# The controller which is responsible for managing signal slots connections
35	# for the gui and providing an interface to the data model.
36
37	def __init__(self, parent=None, guimanager=None, manager=None):
38	super(DataExplorerWindow, self).__init__(parent, guimanager)
39
40	# Main model for keeping loaded data
41	self.model = QtGui.QStandardItemModel(self)
42
43	# Secondary model for keeping frozen data sets
44	self.theory_model = QtGui.QStandardItemModel(self)
45
46	# GuiManager is the actual parent, but we needed to also pass the QMainWindow
47	# in order to set the widget parentage properly.
48	self.parent = guimanager
49	self.loader = Loader()
50	self.manager = manager if manager is not None else DataManager()
51	self.txt_widget = QtWidgets.QTextEdit(None)
52
53	# Be careful with twisted threads.
54	self.mutex = QtCore.QMutex()
55
56	# Active plots
57	self.active_plots = {}
58
59	# Connect the buttons
60	self.cmdLoad.clicked.connect(self.loadFile)
61	self.cmdDeleteData.clicked.connect(self.deleteFile)
62	self.cmdDeleteTheory.clicked.connect(self.deleteTheory)
63	self.cmdFreeze.clicked.connect(self.freezeTheory)
64	self.cmdSendTo.clicked.connect(self.sendData)
65	self.cmdNew.clicked.connect(self.newPlot)
66	self.cmdNew_2.clicked.connect(self.newPlot)
67	self.cmdAppend.clicked.connect(self.appendPlot)
68	self.cmdHelp.clicked.connect(self.displayHelp)
69	self.cmdHelp_2.clicked.connect(self.displayHelp)
70
71	# Fill in the perspectives combo
72	self.initPerspectives()
73
74	# Custom context menu
75	self.treeView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
76	self.treeView.customContextMenuRequested.connect(self.onCustomContextMenu)
77	self.contextMenu()
78
79	# Same menus for the theory view
80	self.freezeView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
81	self.freezeView.customContextMenuRequested.connect(self.onCustomContextMenu)
82
83	# Connect the comboboxes
84	self.cbSelect.currentIndexChanged.connect(self.selectData)
85
86	#self.closeEvent.connect(self.closeEvent)
87	self.currentChanged.connect(self.onTabSwitch)
88	self.communicator = self.parent.communicator()
89	self.communicator.fileReadSignal.connect(self.loadFromURL)
90	self.communicator.activeGraphsSignal.connect(self.updateGraphCount)
91	self.communicator.activeGraphName.connect(self.updatePlotName)
92	self.communicator.plotUpdateSignal.connect(self.updatePlot)
93
94	self.cbgraph.editTextChanged.connect(self.enableGraphCombo)
95	self.cbgraph.currentIndexChanged.connect(self.enableGraphCombo)
96
97	# Proxy model for showing a subset of Data1D/Data2D content
98	self.data_proxy = QtCore.QSortFilterProxyModel(self)
99	self.data_proxy.setSourceModel(self.model)
100
101	# Don't show "empty" rows with data objects
102	self.data_proxy.setFilterRegExp(r"[^()]")
103
104	# The Data viewer is QTreeView showing the proxy model
105	self.treeView.setModel(self.data_proxy)
106
107	# Proxy model for showing a subset of Theory content
108	self.theory_proxy = QtCore.QSortFilterProxyModel(self)
109	self.theory_proxy.setSourceModel(self.theory_model)
110
111	# Don't show "empty" rows with data objects
112	self.theory_proxy.setFilterRegExp(r"[^()]")
113
114	# Theory model view
115	self.freezeView.setModel(self.theory_proxy)
116
117	self.enableGraphCombo(None)
118
119	# Current view on model
120	self.current_view = self.treeView
121
122	def closeEvent(self, event):
123	"""
124	Overwrite the close event - no close!
125	"""
126	event.ignore()
127
128	def onTabSwitch(self, index):
129	""" Callback for tab switching signal """
130	if index == 0:
131	self.current_view = self.treeView
132	else:
133	self.current_view = self.freezeView
134
135	def displayHelp(self):
136	"""
137	Show the "Loading data" section of help
138	"""
139	tree_location = "/user/qtgui/MainWindow/data_explorer_help.html"
140	self.parent.showHelp(tree_location)
141
142	def enableGraphCombo(self, combo_text):
143	"""
144	Enables/disables "Assign Plot" elements
145	"""
146	self.cbgraph.setEnabled(len(PlotHelper.currentPlots()) > 0)
147	self.cmdAppend.setEnabled(len(PlotHelper.currentPlots()) > 0)
148
149	def initPerspectives(self):
150	"""
151	Populate the Perspective combobox and define callbacks
152	"""
153	available_perspectives = sorted([p for p in list(Perspectives.PERSPECTIVES.keys())])
154	if available_perspectives:
155	self.cbFitting.clear()
156	self.cbFitting.addItems(available_perspectives)
157	self.cbFitting.currentIndexChanged.connect(self.updatePerspectiveCombo)
158	# Set the index so we see the default (Fitting)
159	self.cbFitting.setCurrentIndex(self.cbFitting.findText(DEFAULT_PERSPECTIVE))
160
161	def _perspective(self):
162	"""
163	Returns the current perspective
164	"""
165	return self.parent.perspective()
166
167	def loadFromURL(self, url):
168	"""
169	Threaded file load
170	"""
171	load_thread = threads.deferToThread(self.readData, url)
172	load_thread.addCallback(self.loadComplete)
173	load_thread.addErrback(self.loadFailed)
174
175	def loadFile(self, event=None):
176	"""
177	Called when the "Load" button pressed.
178	Opens the Qt "Open File..." dialog
179	"""
180	path_str = self.chooseFiles()
181	if not path_str:
182	return
183	self.loadFromURL(path_str)
184
185	def loadFolder(self, event=None):
186	"""
187	Called when the "File/Load Folder" menu item chosen.
188	Opens the Qt "Open Folder..." dialog
189	"""
190	folder = QtWidgets.QFileDialog.getExistingDirectory(self, "Choose a directory", "",
191	QtWidgets.QFileDialog.ShowDirsOnly \| QtWidgets.QFileDialog.DontUseNativeDialog)
192	if folder is None:
193	return
194
195	folder = str(folder)
196
197	if not os.path.isdir(folder):
198	return
199
200	# get content of dir into a list
201	path_str = [os.path.join(os.path.abspath(folder), filename)
202	for filename in os.listdir(folder)]
203
204	self.loadFromURL(path_str)
205
206	def loadProject(self):
207	"""
208	Called when the "Open Project" menu item chosen.
209	"""
210	kwargs = {
211	'parent' : self,
212	'caption' : 'Open Project',
213	'filter' : 'Project (.json);;All files (.*)',
214	'options' : QtWidgets.QFileDialog.DontUseNativeDialog
215	}
216	filename = QtWidgets.QFileDialog.getOpenFileName(**kwargs)[0]
217	if filename:
218	load_thread = threads.deferToThread(self.readProject, filename)
219	load_thread.addCallback(self.readProjectComplete)
220	load_thread.addErrback(self.readProjectFailed)
221
222	def loadFailed(self, reason):
223	"""
224	"""
225	print("file load FAILED: ", reason)
226	pass
227
228	def readProjectFailed(self, reason):
229	"""
230	"""
231	print("readProjectFailed FAILED: ", reason)
232	pass
233
234	def readProject(self, filename):
235	self.communicator.statusBarUpdateSignal.emit("Loading Project... %s" % os.path.basename(filename))
236	try:
237	manager = DataManager()
238	with open(filename, 'r') as infile:
239	manager.load_from_readable(infile)
240
241	self.communicator.statusBarUpdateSignal.emit("Loaded Project: %s" % os.path.basename(filename))
242	return manager
243
244	except:
245	self.communicator.statusBarUpdateSignal.emit("Failed: %s" % os.path.basename(filename))
246	raise
247
248	def readProjectComplete(self, manager):
249	self.model.clear()
250
251	self.manager.assign(manager)
252	self.model.beginResetModel()
253	for id, item in self.manager.get_all_data().items():
254	self.updateModel(item.data, item.path)
255
256	self.model.endResetModel()
257
258	def saveProject(self):
259	"""
260	Called when the "Save Project" menu item chosen.
261	"""
262	kwargs = {
263	'parent' : self,
264	'caption' : 'Save Project',
265	'filter' : 'Project (*.json)',
266	'options' : QtWidgets.QFileDialog.DontUseNativeDialog
267	}
268	name_tuple = QtWidgets.QFileDialog.getSaveFileName(**kwargs)
269	filename = name_tuple[0]
270	if filename:
271	_, extension = os.path.splitext(filename)
272	if not extension:
273	filename = '.'.join((filename, 'json'))
274	self.communicator.statusBarUpdateSignal.emit("Saving Project... %s\n" % os.path.basename(filename))
275	with open(filename, 'w') as outfile:
276	self.manager.save_to_writable(outfile)
277
278	def deleteFile(self, event):
279	"""
280	Delete selected rows from the model
281	"""
282	# Assure this is indeed wanted
283	delete_msg = "This operation will delete the checked data sets and all the dependents." +\
284	"\nDo you want to continue?"
285	reply = QtWidgets.QMessageBox.question(self,
286	'Warning',
287	delete_msg,
288	QtWidgets.QMessageBox.Yes,
289	QtWidgets.QMessageBox.No)
290
291	if reply == QtWidgets.QMessageBox.No:
292	return
293
294	# Figure out which rows are checked
295	ind = -1
296	# Use 'while' so the row count is forced at every iteration
297	deleted_indices = []
298	deleted_names = []
299	while ind < self.model.rowCount():
300	ind += 1
301	item = self.model.item(ind)
302
303	if item and item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
304	# Delete these rows from the model
305	deleted_names.append(str(self.model.item(ind).text()))
306	deleted_indices.append(item)
307
308	self.model.removeRow(ind)
309	# Decrement index since we just deleted it
310	ind -= 1
311
312	# Let others know we deleted data
313	self.communicator.dataDeletedSignal.emit(deleted_indices)
314
315	# update stored_data
316	self.manager.update_stored_data(deleted_names)
317
318	def deleteTheory(self, event):
319	"""
320	Delete selected rows from the theory model
321	"""
322	# Assure this is indeed wanted
323	delete_msg = "This operation will delete the checked data sets and all the dependents." +\
324	"\nDo you want to continue?"
325	reply = QtWidgets.QMessageBox.question(self,
326	'Warning',
327	delete_msg,
328	QtWidgets.QMessageBox.Yes,
329	QtWidgets.QMessageBox.No)
330
331	if reply == QtWidgets.QMessageBox.No:
332	return
333
334	# Figure out which rows are checked
335	ind = -1
336	# Use 'while' so the row count is forced at every iteration
337	while ind < self.theory_model.rowCount():
338	ind += 1
339	item = self.theory_model.item(ind)
340	if item and item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
341	# Delete these rows from the model
342	self.theory_model.removeRow(ind)
343	# Decrement index since we just deleted it
344	ind -= 1
345
346	# pass temporarily kept as a breakpoint anchor
347	pass
348
349	def sendData(self, event):
350	"""
351	Send selected item data to the current perspective and set the relevant notifiers
352	"""
353	# Set the signal handlers
354	self.communicator.updateModelFromPerspectiveSignal.connect(self.updateModelFromPerspective)
355
356	def isItemReady(index):
357	item = self.model.item(index)
358	return item.isCheckable() and item.checkState() == QtCore.Qt.Checked
359
360	# Figure out which rows are checked
361	selected_items = [self.model.item(index)
362	for index in range(self.model.rowCount())
363	if isItemReady(index)]
364
365	if len(selected_items) < 1:
366	return
367
368	# Which perspective has been selected?
369	if len(selected_items) > 1 and not self._perspective().allowBatch():
370	msg = self._perspective().title() + " does not allow multiple data."
371	msgbox = QtWidgets.QMessageBox()
372	msgbox.setIcon(QtWidgets.QMessageBox.Critical)
373	msgbox.setText(msg)
374	msgbox.setStandardButtons(QtWidgets.QMessageBox.Ok)
375	retval = msgbox.exec_()
376	return
377
378	# Notify the GuiManager about the send request
379	self._perspective().setData(data_item=selected_items, is_batch=self.chkBatch.isChecked())
380
381	def freezeTheory(self, event):
382	"""
383	Freeze selected theory rows.
384
385	"Freezing" means taking the plottable data from the Theory item
386	and copying it to a separate top-level item in Data.
387	"""
388	# Figure out which rows are checked
389	# Use 'while' so the row count is forced at every iteration
390	outer_index = -1
391	theories_copied = 0
392	while outer_index < self.theory_model.rowCount():
393	outer_index += 1
394	outer_item = self.theory_model.item(outer_index)
395	if not outer_item:
396	continue
397	if outer_item.isCheckable() and \
398	outer_item.checkState() == QtCore.Qt.Checked:
399	self.model.beginResetModel()
400	theories_copied += 1
401	new_item = self.recursivelyCloneItem(outer_item)
402	# Append a "unique" descriptor to the name
403	time_bit = str(time.time())[7:-1].replace('.', '')
404	new_name = new_item.text() + '_@' + time_bit
405	new_item.setText(new_name)
406	self.model.appendRow(new_item)
407	self.model.endResetModel()
408	#self.model.reset()
409
410	freeze_msg = ""
411	if theories_copied == 0:
412	return
413	elif theories_copied == 1:
414	freeze_msg = "1 theory copied from the Theory tab as a data set"
415	elif theories_copied > 1:
416	freeze_msg = "%i theories copied from the Theory tab as data sets" % theories_copied
417	else:
418	freeze_msg = "Unexpected number of theories copied: %i" % theories_copied
419	raise AttributeError(freeze_msg)
420	self.communicator.statusBarUpdateSignal.emit(freeze_msg)
421	# Actively switch tabs
422	self.setCurrentIndex(1)
423
424	def recursivelyCloneItem(self, item):
425	"""
426	Clone QStandardItem() object
427	"""
428	new_item = item.clone()
429	# clone doesn't do deepcopy :(
430	for child_index in range(item.rowCount()):
431	child_item = self.recursivelyCloneItem(item.child(child_index))
432	new_item.setChild(child_index, child_item)
433	return new_item
434
435	def updatePlotName(self, name_tuple):
436	"""
437	Modify the name of the current plot
438	"""
439	old_name, current_name = name_tuple
440	ind = self.cbgraph.findText(old_name)
441	self.cbgraph.setCurrentIndex(ind)
442	self.cbgraph.setItemText(ind, current_name)
443
444	def updateGraphCount(self, graph_list):
445	"""
446	Modify the graph name combo and potentially remove
447	deleted graphs
448	"""
449	self.updateGraphCombo(graph_list)
450
451	if not self.active_plots:
452	return
453	new_plots = [PlotHelper.plotById(plot) for plot in graph_list]
454	active_plots_copy = list(self.active_plots.keys())
455	for plot in active_plots_copy:
456	if self.active_plots[plot] in new_plots:
457	continue
458	self.active_plots.pop(plot)
459
460	def updateGraphCombo(self, graph_list):
461	"""
462	Modify Graph combo box on graph add/delete
463	"""
464	orig_text = self.cbgraph.currentText()
465	self.cbgraph.clear()
466	self.cbgraph.insertItems(0, graph_list)
467	ind = self.cbgraph.findText(orig_text)
468	if ind > 0:
469	self.cbgraph.setCurrentIndex(ind)
470
471	def updatePerspectiveCombo(self, index):
472	"""
473	Notify the gui manager about the new perspective chosen.
474	"""
475	self.communicator.perspectiveChangedSignal.emit(self.cbFitting.itemText(index))
476	self.chkBatch.setEnabled(self.parent.perspective().allowBatch())
477
478	def itemFromFilename(self, filename):
479	"""
480	Retrieves model item corresponding to the given filename
481	"""
482	item = GuiUtils.itemFromFilename(filename, self.model)
483	return item
484
485	def displayFile(self, filename=None, is_data=True):
486	"""
487	Forces display of charts for the given filename
488	"""
489	model = self.model if is_data else self.theory_model
490	# Now query the model item for available plots
491	plots = GuiUtils.plotsFromFilename(filename, model)
492	item = GuiUtils.itemFromFilename(filename, model)
493
494	new_plots = []
495	for plot in plots:
496	plot_id = plot.id
497	if plot_id in list(self.active_plots.keys()):
498	self.active_plots[plot_id].replacePlot(plot_id, plot)
499	else:
500	# 'sophisticated' test to generate standalone plot for residuals
501	if 'esiduals' in plot.title:
502	self.plotData([(item, plot)])
503	else:
504	new_plots.append((item, plot))
505
506	if new_plots:
507	self.plotData(new_plots)
508
509	def displayData(self, data_list):
510	"""
511	Forces display of charts for the given data set
512	"""
513	plot_to_show = data_list[0]
514	# passed plot is used ONLY to figure out its title,
515	# so all the charts related by it can be pulled from
516	# the data explorer indices.
517	filename = plot_to_show.filename
518	self.displayFile(filename=filename, is_data=plot_to_show.is_data)
519
520	def addDataPlot2D(self, plot_set, item):
521	"""
522	Create a new 2D plot and add it to the workspace
523	"""
524	plot2D = Plotter2D(self)
525	plot2D.item = item
526	plot2D.plot(plot_set)
527	self.addPlot(plot2D)
528	self.active_plots[plot2D.data.id] = plot2D
529	#============================================
530	# Experimental hook for silx charts
531	#============================================
532	## Attach silx
533	#from silx.gui import qt
534	#from silx.gui.plot import StackView
535	#sv = StackView()
536	#sv.setColormap("jet", autoscale=True)
537	#sv.setStack(plot_set.data.reshape(1,100,100))
538	##sv.setLabels(["x: -10 to 10 (200 samples)",
539	## "y: -10 to 5 (150 samples)"])
540	#sv.show()
541	#============================================
542
543	def plotData(self, plots):
544	"""
545	Takes 1D/2D data and generates a single plot (1D) or multiple plots (2D)
546	"""
547	# Call show on requested plots
548	# All same-type charts in one plot
549	for item, plot_set in plots:
550	if isinstance(plot_set, Data1D):
551	if not 'new_plot' in locals():
552	new_plot = Plotter(self)
553	new_plot.plot(plot_set)
554	# active_plots may contain multiple charts
555	self.active_plots[plot_set.id] = new_plot
556	elif isinstance(plot_set, Data2D):
557	self.addDataPlot2D(plot_set, item)
558	else:
559	msg = "Incorrect data type passed to Plotting"
560	raise AttributeError(msg)
561
562	if 'new_plot' in locals() and \
563	hasattr(new_plot, 'data') and \
564	isinstance(new_plot.data, Data1D):
565	self.addPlot(new_plot)
566
567	def newPlot(self):
568	"""
569	Select checked data and plot it
570	"""
571	# Check which tab is currently active
572	if self.current_view == self.treeView:
573	plots = GuiUtils.plotsFromCheckedItems(self.model)
574	else:
575	plots = GuiUtils.plotsFromCheckedItems(self.theory_model)
576
577	self.plotData(plots)
578
579	def addPlot(self, new_plot):
580	"""
581	Helper method for plot bookkeeping
582	"""
583	# Update the global plot counter
584	title = str(PlotHelper.idOfPlot(new_plot))
585	new_plot.setWindowTitle(title)
586
587	# Set the object name to satisfy the Squish object picker
588	new_plot.setObjectName(title)
589
590	# Add the plot to the workspace
591	self.parent.workspace().addSubWindow(new_plot)
592
593	# Show the plot
594	new_plot.show()
595	new_plot.canvas.draw()
596
597	# Update the active chart list
598	#self.active_plots[new_plot.data.id] = new_plot
599
600	def appendPlot(self):
601	"""
602	Add data set(s) to the existing matplotlib chart
603	"""
604	# new plot data
605	new_plots = GuiUtils.plotsFromCheckedItems(self.model)
606
607	# old plot data
608	plot_id = str(self.cbgraph.currentText())
609
610	assert plot_id in PlotHelper.currentPlots(), "No such plot: %s"%(plot_id)
611
612	old_plot = PlotHelper.plotById(plot_id)
613
614	# Add new data to the old plot, if data type is the same.
615	for _, plot_set in new_plots:
616	if type(plot_set) is type(old_plot._data):
617	old_plot.data = plot_set
618	old_plot.plot()
619
620	def updatePlot(self, new_data):
621	"""
622	Modify existing plot for immediate response
623	"""
624	data = new_data[0]
625	assert type(data).__name__ in ['Data1D', 'Data2D']
626
627	id = data.id
628	if data.id in list(self.active_plots.keys()):
629	self.active_plots[id].replacePlot(id, data)
630
631	def chooseFiles(self):
632	"""
633	Shows the Open file dialog and returns the chosen path(s)
634	"""
635	# List of known extensions
636	wlist = self.getWlist()
637
638	# Location is automatically saved - no need to keep track of the last dir
639	# But only with Qt built-in dialog (non-platform native)
640	paths = QtWidgets.QFileDialog.getOpenFileNames(self, "Choose a file", "",
641	wlist, None, QtWidgets.QFileDialog.DontUseNativeDialog)[0]
642	if not paths:
643	return
644
645	if not isinstance(paths, list):
646	paths = [paths]
647
648	return paths
649
650	def readData(self, path):
651	"""
652	verbatim copy-paste from
653	sasgui.guiframe.local_perspectives.data_loader.data_loader.py
654	slightly modified for clarity
655	"""
656	message = ""
657	log_msg = ''
658	output = {}
659	any_error = False
660	data_error = False
661	error_message = ""
662	number_of_files = len(path)
663	self.communicator.progressBarUpdateSignal.emit(0.0)
664
665	for index, p_file in enumerate(path):
666	basename = os.path.basename(p_file)
667	_, extension = os.path.splitext(basename)
668	if extension.lower() in GuiUtils.EXTENSIONS:
669	any_error = True
670	log_msg = "Data Loader cannot "
671	log_msg += "load: %s\n" % str(p_file)
672	log_msg += """Please try to open that file from "open project" """
673	log_msg += """or "open analysis" menu\n"""
674	error_message = log_msg + "\n"
675	logging.info(log_msg)
676	continue
677
678	try:
679	message = "Loading Data... " + str(basename) + "\n"
680
681	# change this to signal notification in GuiManager
682	self.communicator.statusBarUpdateSignal.emit(message)
683
684	output_objects = self.loader.load(p_file)
685
686	# Some loaders return a list and some just a single Data1D object.
687	# Standardize.
688	if not isinstance(output_objects, list):
689	output_objects = [output_objects]
690
691	for item in output_objects:
692	# cast sascalc.dataloader.data_info.Data1D into
693	# sasgui.guiframe.dataFitting.Data1D
694	# TODO : Fix it
695	new_data = self.manager.create_gui_data(item, p_file)
696	output[new_data.id] = new_data
697
698	# Model update should be protected
699	self.mutex.lock()
700	self.updateModel(new_data, p_file)
701	#self.model.reset()
702	QtWidgets.QApplication.processEvents()
703	self.mutex.unlock()
704
705	if hasattr(item, 'errors'):
706	for error_data in item.errors:
707	data_error = True
708	message += "\tError: {0}\n".format(error_data)
709	else:
710
711	logging.error("Loader returned an invalid object:\n %s" % str(item))
712	data_error = True
713
714	except Exception as ex:
715	logging.error(sys.exc_info()[1])
716
717	any_error = True
718	if any_error or error_message != "":
719	if error_message == "":
720	error = "Error: " + str(sys.exc_info()[1]) + "\n"
721	error += "while loading Data: \n%s\n" % str(basename)
722	error_message += "The data file you selected could not be loaded.\n"
723	error_message += "Make sure the content of your file"
724	error_message += " is properly formatted.\n\n"
725	error_message += "When contacting the SasView team, mention the"
726	error_message += " following:\n%s" % str(error)
727	elif data_error:
728	base_message = "Errors occurred while loading "
729	base_message += "{0}\n".format(basename)
730	base_message += "The data file loaded but with errors.\n"
731	error_message = base_message + error_message
732	else:
733	error_message += "%s\n" % str(p_file)
734
735	current_percentage = int(100.0* index/number_of_files)
736	self.communicator.progressBarUpdateSignal.emit(current_percentage)
737
738	if any_error or error_message:
739	logging.error(error_message)
740	status_bar_message = "Errors occurred while loading %s" % format(basename)
741	self.communicator.statusBarUpdateSignal.emit(status_bar_message)
742
743	else:
744	message = "Loading Data Complete! "
745	message += log_msg
746	# Notify the progress bar that the updates are over.
747	self.communicator.progressBarUpdateSignal.emit(-1)
748	self.communicator.statusBarUpdateSignal.emit(message)
749
750	return output, message
751
752	def getWlist(self):
753	"""
754	Wildcards of files we know the format of.
755	"""
756	# Display the Qt Load File module
757	cards = self.loader.get_wildcards()
758
759	# get rid of the wx remnant in wildcards
760	# TODO: modify sasview loader get_wildcards method, after merge,
761	# so this kludge can be avoided
762	new_cards = []
763	for item in cards:
764	new_cards.append(item[:item.find("\|")])
765	wlist = ';;'.join(new_cards)
766
767	return wlist
768
769	def selectData(self, index):
770	"""
771	Callback method for modifying the TreeView on Selection Options change
772	"""
773	if not isinstance(index, int):
774	msg = "Incorrect type passed to DataExplorer.selectData()"
775	raise AttributeError(msg)
776
777	# Respond appropriately
778	if index == 0:
779	# Select All
780	for index in range(self.model.rowCount()):
781	item = self.model.item(index)
782	if item.isCheckable() and item.checkState() == QtCore.Qt.Unchecked:
783	item.setCheckState(QtCore.Qt.Checked)
784	elif index == 1:
785	# De-select All
786	for index in range(self.model.rowCount()):
787	item = self.model.item(index)
788	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
789	item.setCheckState(QtCore.Qt.Unchecked)
790
791	elif index == 2:
792	# Select All 1-D
793	for index in range(self.model.rowCount()):
794	item = self.model.item(index)
795	item.setCheckState(QtCore.Qt.Unchecked)
796
797	try:
798	is1D = isinstance(GuiUtils.dataFromItem(item), Data1D)
799	except AttributeError:
800	msg = "Bad structure of the data model."
801	raise RuntimeError(msg)
802
803	if is1D:
804	item.setCheckState(QtCore.Qt.Checked)
805
806	elif index == 3:
807	# Unselect All 1-D
808	for index in range(self.model.rowCount()):
809	item = self.model.item(index)
810
811	try:
812	is1D = isinstance(GuiUtils.dataFromItem(item), Data1D)
813	except AttributeError:
814	msg = "Bad structure of the data model."
815	raise RuntimeError(msg)
816
817	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked and is1D:
818	item.setCheckState(QtCore.Qt.Unchecked)
819
820	elif index == 4:
821	# Select All 2-D
822	for index in range(self.model.rowCount()):
823	item = self.model.item(index)
824	item.setCheckState(QtCore.Qt.Unchecked)
825	try:
826	is2D = isinstance(GuiUtils.dataFromItem(item), Data2D)
827	except AttributeError:
828	msg = "Bad structure of the data model."
829	raise RuntimeError(msg)
830
831	if is2D:
832	item.setCheckState(QtCore.Qt.Checked)
833
834	elif index == 5:
835	# Unselect All 2-D
836	for index in range(self.model.rowCount()):
837	item = self.model.item(index)
838
839	try:
840	is2D = isinstance(GuiUtils.dataFromItem(item), Data2D)
841	except AttributeError:
842	msg = "Bad structure of the data model."
843	raise RuntimeError(msg)
844
845	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked and is2D:
846	item.setCheckState(QtCore.Qt.Unchecked)
847
848	else:
849	msg = "Incorrect value in the Selection Option"
850	# Change this to a proper logging action
851	raise Exception(msg)
852
853	def contextMenu(self):
854	"""
855	Define actions and layout of the right click context menu
856	"""
857	# Create a custom menu based on actions defined in the UI file
858	self.context_menu = QtWidgets.QMenu(self)
859	self.context_menu.addAction(self.actionDataInfo)
860	self.context_menu.addAction(self.actionSaveAs)
861	self.context_menu.addAction(self.actionQuickPlot)
862	self.context_menu.addSeparator()
863	self.context_menu.addAction(self.actionQuick3DPlot)
864	self.context_menu.addAction(self.actionEditMask)
865	self.context_menu.addSeparator()
866	self.context_menu.addAction(self.actionDelete)
867
868
869	# Define the callbacks
870	self.actionDataInfo.triggered.connect(self.showDataInfo)
871	self.actionSaveAs.triggered.connect(self.saveDataAs)
872	self.actionQuickPlot.triggered.connect(self.quickDataPlot)
873	self.actionQuick3DPlot.triggered.connect(self.quickData3DPlot)
874	self.actionEditMask.triggered.connect(self.showEditDataMask)
875	self.actionDelete.triggered.connect(self.deleteItem)
876
877	def onCustomContextMenu(self, position):
878	"""
879	Show the right-click context menu in the data treeview
880	"""
881	index = self.current_view.indexAt(position)
882	proxy = self.current_view.model()
883	model = proxy.sourceModel()
884
885	if index.isValid():
886	model_item = model.itemFromIndex(proxy.mapToSource(index))
887	# Find the mapped index
888	orig_index = model_item.isCheckable()
889	if orig_index:
890	# Check the data to enable/disable actions
891	is_2D = isinstance(GuiUtils.dataFromItem(model_item), Data2D)
892	self.actionQuick3DPlot.setEnabled(is_2D)
893	self.actionEditMask.setEnabled(is_2D)
894	# Fire up the menu
895	self.context_menu.exec_(self.current_view.mapToGlobal(position))
896
897	def showDataInfo(self):
898	"""
899	Show a simple read-only text edit with data information.
900	"""
901	index = self.current_view.selectedIndexes()[0]
902	proxy = self.current_view.model()
903	model = proxy.sourceModel()
904	model_item = model.itemFromIndex(proxy.mapToSource(index))
905
906	data = GuiUtils.dataFromItem(model_item)
907	if isinstance(data, Data1D):
908	text_to_show = GuiUtils.retrieveData1d(data)
909	# Hardcoded sizes to enable full width rendering with default font
910	self.txt_widget.resize(420,600)
911	else:
912	text_to_show = GuiUtils.retrieveData2d(data)
913	# Hardcoded sizes to enable full width rendering with default font
914	self.txt_widget.resize(700,600)
915
916	self.txt_widget.setReadOnly(True)
917	self.txt_widget.setWindowFlags(QtCore.Qt.Window)
918	self.txt_widget.setWindowIcon(QtGui.QIcon(":/res/ball.ico"))
919	self.txt_widget.setWindowTitle("Data Info: %s" % data.filename)
920	self.txt_widget.clear()
921	self.txt_widget.insertPlainText(text_to_show)
922
923	self.txt_widget.show()
924	# Move the slider all the way up, if present
925	vertical_scroll_bar = self.txt_widget.verticalScrollBar()
926	vertical_scroll_bar.triggerAction(QtWidgets.QScrollBar.SliderToMinimum)
927
928	def saveDataAs(self):
929	"""
930	Save the data points as either txt or xml
931	"""
932	index = self.current_view.selectedIndexes()[0]
933	proxy = self.current_view.model()
934	model = proxy.sourceModel()
935	model_item = model.itemFromIndex(proxy.mapToSource(index))
936
937	data = GuiUtils.dataFromItem(model_item)
938	if isinstance(data, Data1D):
939	GuiUtils.saveData1D(data)
940	else:
941	GuiUtils.saveData2D(data)
942
943	def quickDataPlot(self):
944	"""
945	Frozen plot - display an image of the plot
946	"""
947	index = self.current_view.selectedIndexes()[0]
948	proxy = self.current_view.model()
949	model = proxy.sourceModel()
950	model_item = model.itemFromIndex(proxy.mapToSource(index))
951
952	data = GuiUtils.dataFromItem(model_item)
953
954	method_name = 'Plotter'
955	if isinstance(data, Data2D):
956	method_name='Plotter2D'
957
958	new_plot = globals()[method_name](self, quickplot=True)
959	new_plot.data = data
960	#new_plot.plot(marker='o')
961	new_plot.plot()
962
963	# Update the global plot counter
964	title = "Plot " + data.name
965	new_plot.setWindowTitle(title)
966
967	# Show the plot
968	new_plot.show()
969
970	def quickData3DPlot(self):
971	"""
972	Slowish 3D plot
973	"""
974	index = self.current_view.selectedIndexes()[0]
975	proxy = self.current_view.model()
976	model = proxy.sourceModel()
977	model_item = model.itemFromIndex(proxy.mapToSource(index))
978
979	data = GuiUtils.dataFromItem(model_item)
980
981	new_plot = Plotter2D(self, quickplot=True, dimension=3)
982	new_plot.data = data
983	new_plot.plot()
984
985	# Update the global plot counter
986	title = "Plot " + data.name
987	new_plot.setWindowTitle(title)
988
989	# Show the plot
990	new_plot.show()
991
992	def showEditDataMask(self):
993	"""
994	Mask Editor for 2D plots
995	"""
996	index = self.current_view.selectedIndexes()[0]
997	proxy = self.current_view.model()
998	model = proxy.sourceModel()
999	model_item = model.itemFromIndex(proxy.mapToSource(index))
1000
1001	data = GuiUtils.dataFromItem(model_item)
1002
1003	mask_editor = MaskEditor(self, data)
1004	# Modal dialog here.
1005	mask_editor.exec_()
1006
1007	def deleteItem(self):
1008	"""
1009	Delete the current item
1010	"""
1011	# Assure this is indeed wanted
1012	delete_msg = "This operation will delete the selected data sets." +\
1013	"\nDo you want to continue?"
1014	reply = QtWidgets.QMessageBox.question(self,
1015	'Warning',
1016	delete_msg,
1017	QtWidgets.QMessageBox.Yes,
1018	QtWidgets.QMessageBox.No)
1019
1020	if reply == QtWidgets.QMessageBox.No:
1021	return
1022
1023	indices = self.current_view.selectedIndexes()
1024	proxy = self.current_view.model()
1025	model = proxy.sourceModel()
1026
1027	for index in indices:
1028	row_index = proxy.mapToSource(index)
1029	item_to_delete = model.itemFromIndex(row_index)
1030	if item_to_delete and item_to_delete.isCheckable():
1031	row = row_index.row()
1032	if item_to_delete.parent():
1033	# We have a child item - delete from it
1034	item_to_delete.parent().removeRow(row)
1035	else:
1036	# delete directly from model
1037	model.removeRow(row)
1038	pass
1039
1040	def onAnalysisUpdate(self, new_perspective=""):
1041	"""
1042	Update the perspective combo index based on passed string
1043	"""
1044	assert new_perspective in Perspectives.PERSPECTIVES.keys()
1045	self.cbFitting.blockSignals(True)
1046	self.cbFitting.setCurrentIndex(self.cbFitting.findText(new_perspective))
1047	self.cbFitting.blockSignals(False)
1048	pass
1049
1050	def loadComplete(self, output):
1051	"""
1052	Post message to status bar and update the data manager
1053	"""
1054	assert isinstance(output, tuple)
1055
1056	# Reset the model so the view gets updated.
1057	#self.model.reset()
1058	self.communicator.progressBarUpdateSignal.emit(-1)
1059
1060	output_data = output[0]
1061	message = output[1]
1062	# Notify the manager of the new data available
1063	self.communicator.statusBarUpdateSignal.emit(message)
1064	self.communicator.fileDataReceivedSignal.emit(output_data)
1065	self.manager.add_data(data_list=output_data)
1066
1067	def loadFailed(self, reason):
1068	print("File Load Failed with:\n", reason)
1069	pass
1070
1071	def updateModel(self, data, p_file):
1072	"""
1073	Add data and Info fields to the model item
1074	"""
1075	# Structure of the model
1076	# checkbox + basename
1077	# \|-------> Data.D object
1078	# \|-------> Info
1079	# \|----> Title:
1080	# \|----> Run:
1081	# \|----> Type:
1082	# \|----> Path:
1083	# \|----> Process
1084	# \|-----> process[0].name
1085	# \|-------> THEORIES
1086
1087	# Top-level item: checkbox with label
1088	checkbox_item = GuiUtils.HashableStandardItem()
1089	checkbox_item.setCheckable(True)
1090	checkbox_item.setCheckState(QtCore.Qt.Checked)
1091	checkbox_item.setText(os.path.basename(p_file))
1092
1093	# Add the actual Data1D/Data2D object
1094	object_item = GuiUtils.HashableStandardItem()
1095	object_item.setData(data)
1096
1097	checkbox_item.setChild(0, object_item)
1098
1099	# Add rows for display in the view
1100	info_item = GuiUtils.infoFromData(data)
1101
1102	# Set info_item as the first child
1103	checkbox_item.setChild(1, info_item)
1104
1105	# Caption for the theories
1106	checkbox_item.setChild(2, QtGui.QStandardItem("THEORIES"))
1107
1108	# New row in the model
1109	self.model.beginResetModel()
1110	self.model.appendRow(checkbox_item)
1111	self.model.endResetModel()
1112
1113	def updateModelFromPerspective(self, model_item):
1114	"""
1115	Receive an update model item from a perspective
1116	Make sure it is valid and if so, replace it in the model
1117	"""
1118	# Assert the correct type
1119	if not isinstance(model_item, QtGui.QStandardItem):
1120	msg = "Wrong data type returned from calculations."
1121	raise AttributeError(msg)
1122
1123	# TODO: Assert other properties
1124
1125	# Reset the view
1126	##self.model.reset()
1127	# Pass acting as a debugger anchor
1128	pass
1129
1130	def updateTheoryFromPerspective(self, model_item):
1131	"""
1132	Receive an update theory item from a perspective
1133	Make sure it is valid and if so, replace/add in the model
1134	"""
1135	# Assert the correct type
1136	if not isinstance(model_item, QtGui.QStandardItem):
1137	msg = "Wrong data type returned from calculations."
1138	raise AttributeError(msg)
1139
1140	# Check if there are any other items for this tab
1141	# If so, delete them
1142	current_tab_name = model_item.text()
1143	for current_index in range(self.theory_model.rowCount()):
1144	#if current_tab_name in self.theory_model.item(current_index).text():
1145	if current_tab_name == self.theory_model.item(current_index).text():
1146	return
1147	self.theory_model.removeRow(current_index)
1148	break
1149
1150	# send in the new item
1151	self.theory_model.appendRow(model_item)
1152
1153
1154	if __name__ == "__main__":
1155	app = QtWidgets.QApplication([])
1156	dlg = DataExplorerWindow()
1157	dlg.show()
1158	sys.exit(app.exec_())

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SasView

source: sasview/src/sas/qtgui/MainWindow/DataExplorer.py @ 87dfca4

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