DataExplorer.py @ 799963c

ESS_GUIESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalc

Last change on this file since 799963c was ecfe6b6, checked in by Torin Cooper-Bennun <torin.cooper-bennun@…>, 6 years ago

Merge branch 'ESS_GUI_iss976' into ESS_GUI.

SASVIEW-976: Make intermediate data from product models (i.e. P(Q) and S(Q)) plottable.

Property mode set to 100644

File size: 46.1 KB

Line
1	# global
2	import sys
3	import os
4	import time
5	import logging
6	import re
7
8	from PyQt5 import QtCore
9	from PyQt5 import QtGui
10	from PyQt5 import QtWidgets
11
12	from twisted.internet import threads
13
14	# SASCALC
15	from sas.sascalc.dataloader.loader import Loader
16
17	# QTGUI
18	import sas.qtgui.Utilities.GuiUtils as GuiUtils
19	import sas.qtgui.Plotting.PlotHelper as PlotHelper
20
21	from sas.qtgui.Plotting.PlotterData import Data1D
22	from sas.qtgui.Plotting.PlotterData import Data2D
23	from sas.qtgui.Plotting.Plotter import Plotter
24	from sas.qtgui.Plotting.Plotter2D import Plotter2D
25	from sas.qtgui.Plotting.MaskEditor import MaskEditor
26
27	from sas.qtgui.MainWindow.DataManager import DataManager
28	from sas.qtgui.MainWindow.DroppableDataLoadWidget import DroppableDataLoadWidget
29
30	import sas.qtgui.Perspectives as Perspectives
31
32	DEFAULT_PERSPECTIVE = "Fitting"
33
34	logger = logging.getLogger(__name__)
35
36	class DataExplorerWindow(DroppableDataLoadWidget):
37	# The controller which is responsible for managing signal slots connections
38	# for the gui and providing an interface to the data model.
39
40	# This matches the ID of a plot created using FittingLogic._create1DPlot, e.g.
41	# "5 [P(Q)] modelname"
42	# or
43	# "4 modelname".
44	# Useful for determining whether the plot in question is for an intermediate result, such as P(Q) or S(Q) in the
45	# case of a product model; the identifier for this is held in square brackets, as in the example above.
46	theory_plot_ID_pattern = re.compile(r"^([0-9]+)\s+(\[(.)\]\s+)?(.)$")
47
48	def __init__(self, parent=None, guimanager=None, manager=None):
49	super(DataExplorerWindow, self).__init__(parent, guimanager)
50
51	# Main model for keeping loaded data
52	self.model = QtGui.QStandardItemModel(self)
53
54	# Secondary model for keeping frozen data sets
55	self.theory_model = QtGui.QStandardItemModel(self)
56
57	# GuiManager is the actual parent, but we needed to also pass the QMainWindow
58	# in order to set the widget parentage properly.
59	self.parent = guimanager
60	self.loader = Loader()
61	self.manager = manager if manager is not None else DataManager()
62	self.txt_widget = QtWidgets.QTextEdit(None)
63
64	# Be careful with twisted threads.
65	self.mutex = QtCore.QMutex()
66
67	# Plot widgets {name:widget}, required to keep track of plots shown as MDI subwindows
68	self.plot_widgets = {}
69
70	# Active plots {id:Plotter1D/2D}, required to keep track of currently displayed plots
71	self.active_plots = {}
72
73	# Connect the buttons
74	self.cmdLoad.clicked.connect(self.loadFile)
75	self.cmdDeleteData.clicked.connect(self.deleteFile)
76	self.cmdDeleteTheory.clicked.connect(self.deleteTheory)
77	self.cmdFreeze.clicked.connect(self.freezeTheory)
78	self.cmdSendTo.clicked.connect(self.sendData)
79	self.cmdNew.clicked.connect(self.newPlot)
80	self.cmdNew_2.clicked.connect(self.newPlot)
81	self.cmdAppend.clicked.connect(self.appendPlot)
82	self.cmdAppend_2.clicked.connect(self.appendPlot)
83	self.cmdHelp.clicked.connect(self.displayHelp)
84	self.cmdHelp_2.clicked.connect(self.displayHelp)
85
86	# Fill in the perspectives combo
87	self.initPerspectives()
88
89	# Custom context menu
90	self.treeView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
91	self.treeView.customContextMenuRequested.connect(self.onCustomContextMenu)
92	self.contextMenu()
93
94	# Same menus for the theory view
95	self.freezeView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
96	self.freezeView.customContextMenuRequested.connect(self.onCustomContextMenu)
97
98	# Connect the comboboxes
99	self.cbSelect.currentIndexChanged.connect(self.selectData)
100
101	#self.closeEvent.connect(self.closeEvent)
102	self.currentChanged.connect(self.onTabSwitch)
103	self.communicator = self.parent.communicator()
104	self.communicator.fileReadSignal.connect(self.loadFromURL)
105	self.communicator.activeGraphsSignal.connect(self.updateGraphCount)
106	self.communicator.activeGraphName.connect(self.updatePlotName)
107	self.communicator.plotUpdateSignal.connect(self.updatePlot)
108	self.communicator.maskEditorSignal.connect(self.showEditDataMask)
109
110	self.cbgraph.editTextChanged.connect(self.enableGraphCombo)
111	self.cbgraph.currentIndexChanged.connect(self.enableGraphCombo)
112
113	# Proxy model for showing a subset of Data1D/Data2D content
114	self.data_proxy = QtCore.QSortFilterProxyModel(self)
115	self.data_proxy.setSourceModel(self.model)
116
117	# Don't show "empty" rows with data objects
118	self.data_proxy.setFilterRegExp(r"[^()]")
119
120	# The Data viewer is QTreeView showing the proxy model
121	self.treeView.setModel(self.data_proxy)
122
123	# Proxy model for showing a subset of Theory content
124	self.theory_proxy = QtCore.QSortFilterProxyModel(self)
125	self.theory_proxy.setSourceModel(self.theory_model)
126
127	# Don't show "empty" rows with data objects
128	self.theory_proxy.setFilterRegExp(r"[^()]")
129
130	# Theory model view
131	self.freezeView.setModel(self.theory_proxy)
132
133	self.enableGraphCombo(None)
134
135	# Current view on model
136	self.current_view = self.treeView
137
138	def closeEvent(self, event):
139	"""
140	Overwrite the close event - no close!
141	"""
142	event.ignore()
143
144	def onTabSwitch(self, index):
145	""" Callback for tab switching signal """
146	if index == 0:
147	self.current_view = self.treeView
148	else:
149	self.current_view = self.freezeView
150
151	def displayHelp(self):
152	"""
153	Show the "Loading data" section of help
154	"""
155	tree_location = "/user/qtgui/MainWindow/data_explorer_help.html"
156	self.parent.showHelp(tree_location)
157
158	def enableGraphCombo(self, combo_text):
159	"""
160	Enables/disables "Assign Plot" elements
161	"""
162	self.cbgraph.setEnabled(len(PlotHelper.currentPlots()) > 0)
163	self.cmdAppend.setEnabled(len(PlotHelper.currentPlots()) > 0)
164
165	def initPerspectives(self):
166	"""
167	Populate the Perspective combobox and define callbacks
168	"""
169	available_perspectives = sorted([p for p in list(Perspectives.PERSPECTIVES.keys())])
170	if available_perspectives:
171	self.cbFitting.clear()
172	self.cbFitting.addItems(available_perspectives)
173	self.cbFitting.currentIndexChanged.connect(self.updatePerspectiveCombo)
174	# Set the index so we see the default (Fitting)
175	self.cbFitting.setCurrentIndex(self.cbFitting.findText(DEFAULT_PERSPECTIVE))
176
177	def _perspective(self):
178	"""
179	Returns the current perspective
180	"""
181	return self.parent.perspective()
182
183	def loadFromURL(self, url):
184	"""
185	Threaded file load
186	"""
187	load_thread = threads.deferToThread(self.readData, url)
188	load_thread.addCallback(self.loadComplete)
189	load_thread.addErrback(self.loadFailed)
190
191	def loadFile(self, event=None):
192	"""
193	Called when the "Load" button pressed.
194	Opens the Qt "Open File..." dialog
195	"""
196	path_str = self.chooseFiles()
197	if not path_str:
198	return
199	self.loadFromURL(path_str)
200
201	def loadFolder(self, event=None):
202	"""
203	Called when the "File/Load Folder" menu item chosen.
204	Opens the Qt "Open Folder..." dialog
205	"""
206	folder = QtWidgets.QFileDialog.getExistingDirectory(self, "Choose a directory", "",
207	QtWidgets.QFileDialog.ShowDirsOnly \| QtWidgets.QFileDialog.DontUseNativeDialog)
208	if folder is None:
209	return
210
211	folder = str(folder)
212
213	if not os.path.isdir(folder):
214	return
215
216	# get content of dir into a list
217	path_str = [os.path.join(os.path.abspath(folder), filename)
218	for filename in os.listdir(folder)]
219
220	self.loadFromURL(path_str)
221
222	def loadProject(self):
223	"""
224	Called when the "Open Project" menu item chosen.
225	"""
226	kwargs = {
227	'parent' : self,
228	'caption' : 'Open Project',
229	'filter' : 'Project (.json);;All files (.*)',
230	'options' : QtWidgets.QFileDialog.DontUseNativeDialog
231	}
232	filename = QtWidgets.QFileDialog.getOpenFileName(**kwargs)[0]
233	if filename:
234	load_thread = threads.deferToThread(self.readProject, filename)
235	load_thread.addCallback(self.readProjectComplete)
236	load_thread.addErrback(self.readProjectFailed)
237
238	def loadFailed(self, reason):
239	"""
240	"""
241	print("file load FAILED: ", reason)
242	pass
243
244	def readProjectFailed(self, reason):
245	"""
246	"""
247	print("readProjectFailed FAILED: ", reason)
248	pass
249
250	def readProject(self, filename):
251	self.communicator.statusBarUpdateSignal.emit("Loading Project... %s" % os.path.basename(filename))
252	try:
253	manager = DataManager()
254	with open(filename, 'r') as infile:
255	manager.load_from_readable(infile)
256
257	self.communicator.statusBarUpdateSignal.emit("Loaded Project: %s" % os.path.basename(filename))
258	return manager
259
260	except:
261	self.communicator.statusBarUpdateSignal.emit("Failed: %s" % os.path.basename(filename))
262	raise
263
264	def readProjectComplete(self, manager):
265	self.model.clear()
266
267	self.manager.assign(manager)
268	self.model.beginResetModel()
269	for id, item in self.manager.get_all_data().items():
270	self.updateModel(item.data, item.path)
271
272	self.model.endResetModel()
273
274	def saveProject(self):
275	"""
276	Called when the "Save Project" menu item chosen.
277	"""
278	kwargs = {
279	'parent' : self,
280	'caption' : 'Save Project',
281	'filter' : 'Project (*.json)',
282	'options' : QtWidgets.QFileDialog.DontUseNativeDialog
283	}
284	name_tuple = QtWidgets.QFileDialog.getSaveFileName(**kwargs)
285	filename = name_tuple[0]
286	if filename:
287	_, extension = os.path.splitext(filename)
288	if not extension:
289	filename = '.'.join((filename, 'json'))
290	self.communicator.statusBarUpdateSignal.emit("Saving Project... %s\n" % os.path.basename(filename))
291	with open(filename, 'w') as outfile:
292	self.manager.save_to_writable(outfile)
293
294	def deleteFile(self, event):
295	"""
296	Delete selected rows from the model
297	"""
298	# Assure this is indeed wanted
299	delete_msg = "This operation will delete the checked data sets and all the dependents." +\
300	"\nDo you want to continue?"
301	reply = QtWidgets.QMessageBox.question(self,
302	'Warning',
303	delete_msg,
304	QtWidgets.QMessageBox.Yes,
305	QtWidgets.QMessageBox.No)
306
307	if reply == QtWidgets.QMessageBox.No:
308	return
309
310	# Figure out which rows are checked
311	ind = -1
312	# Use 'while' so the row count is forced at every iteration
313	deleted_items = []
314	deleted_names = []
315	while ind < self.model.rowCount():
316	ind += 1
317	item = self.model.item(ind)
318
319	if item and item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
320	# Delete these rows from the model
321	deleted_names.append(str(self.model.item(ind).text()))
322	deleted_items.append(item)
323
324	self.model.removeRow(ind)
325	# Decrement index since we just deleted it
326	ind -= 1
327
328	# Let others know we deleted data
329	self.communicator.dataDeletedSignal.emit(deleted_items)
330
331	# update stored_data
332	self.manager.update_stored_data(deleted_names)
333
334	def deleteTheory(self, event):
335	"""
336	Delete selected rows from the theory model
337	"""
338	# Assure this is indeed wanted
339	delete_msg = "This operation will delete the checked data sets and all the dependents." +\
340	"\nDo you want to continue?"
341	reply = QtWidgets.QMessageBox.question(self,
342	'Warning',
343	delete_msg,
344	QtWidgets.QMessageBox.Yes,
345	QtWidgets.QMessageBox.No)
346
347	if reply == QtWidgets.QMessageBox.No:
348	return
349
350	# Figure out which rows are checked
351	ind = -1
352	# Use 'while' so the row count is forced at every iteration
353	while ind < self.theory_model.rowCount():
354	ind += 1
355	item = self.theory_model.item(ind)
356	if item and item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
357	# Delete these rows from the model
358	self.theory_model.removeRow(ind)
359	# Decrement index since we just deleted it
360	ind -= 1
361
362	# pass temporarily kept as a breakpoint anchor
363	pass
364
365	def sendData(self, event):
366	"""
367	Send selected item data to the current perspective and set the relevant notifiers
368	"""
369	# Set the signal handlers
370	self.communicator.updateModelFromPerspectiveSignal.connect(self.updateModelFromPerspective)
371
372	def isItemReady(index):
373	item = self.model.item(index)
374	return item.isCheckable() and item.checkState() == QtCore.Qt.Checked
375
376	# Figure out which rows are checked
377	selected_items = [self.model.item(index)
378	for index in range(self.model.rowCount())
379	if isItemReady(index)]
380
381	if len(selected_items) < 1:
382	return
383
384	# Which perspective has been selected?
385	if len(selected_items) > 1 and not self._perspective().allowBatch():
386	msg = self._perspective().title() + " does not allow multiple data."
387	msgbox = QtWidgets.QMessageBox()
388	msgbox.setIcon(QtWidgets.QMessageBox.Critical)
389	msgbox.setText(msg)
390	msgbox.setStandardButtons(QtWidgets.QMessageBox.Ok)
391	retval = msgbox.exec_()
392	return
393
394	# Notify the GuiManager about the send request
395	self._perspective().setData(data_item=selected_items, is_batch=self.chkBatch.isChecked())
396
397	def freezeTheory(self, event):
398	"""
399	Freeze selected theory rows.
400
401	"Freezing" means taking the plottable data from the Theory item
402	and copying it to a separate top-level item in Data.
403	"""
404	# Figure out which rows are checked
405	# Use 'while' so the row count is forced at every iteration
406	outer_index = -1
407	theories_copied = 0
408	while outer_index < self.theory_model.rowCount():
409	outer_index += 1
410	outer_item = self.theory_model.item(outer_index)
411	if not outer_item:
412	continue
413	if outer_item.isCheckable() and \
414	outer_item.checkState() == QtCore.Qt.Checked:
415	self.model.beginResetModel()
416	theories_copied += 1
417	new_item = self.cloneTheory(outer_item)
418	self.model.appendRow(new_item)
419	self.model.endResetModel()
420
421	freeze_msg = ""
422	if theories_copied == 0:
423	return
424	elif theories_copied == 1:
425	freeze_msg = "1 theory copied from the Theory tab as a data set"
426	elif theories_copied > 1:
427	freeze_msg = "%i theories copied from the Theory tab as data sets" % theories_copied
428	else:
429	freeze_msg = "Unexpected number of theories copied: %i" % theories_copied
430	raise AttributeError(freeze_msg)
431	self.communicator.statusBarUpdateSignal.emit(freeze_msg)
432	# Actively switch tabs
433	self.setCurrentIndex(1)
434
435	def cloneTheory(self, item_from):
436	"""
437	Manually clone theory items into a new HashableItem
438	"""
439	new_item = GuiUtils.HashableStandardItem()
440	new_item.setCheckable(True)
441	new_item.setCheckState(QtCore.Qt.Checked)
442	info_item = QtGui.QStandardItem("Info")
443	data_item = QtGui.QStandardItem()
444	data_item.setData(item_from.child(0).data())
445	new_item.setText(item_from.text())
446	new_item.setChild(0, data_item)
447	new_item.setChild(1, info_item)
448	# Append a "unique" descriptor to the name
449	time_bit = str(time.time())[7:-1].replace('.', '')
450	new_name = new_item.text() + '_@' + time_bit
451	new_item.setText(new_name)
452	# Change the underlying data so it is no longer a theory
453	try:
454	new_item.child(0).data().is_data = True
455	except AttributeError:
456	#no data here, pass
457	pass
458	return new_item
459
460	def recursivelyCloneItem(self, item):
461	"""
462	Clone QStandardItem() object
463	"""
464	new_item = item.clone()
465	# clone doesn't do deepcopy :(
466	for child_index in range(item.rowCount()):
467	child_item = self.recursivelyCloneItem(item.child(child_index))
468	new_item.setChild(child_index, child_item)
469	return new_item
470
471	def updatePlotName(self, name_tuple):
472	"""
473	Modify the name of the current plot
474	"""
475	old_name, current_name = name_tuple
476	ind = self.cbgraph.findText(old_name)
477	self.cbgraph.setCurrentIndex(ind)
478	self.cbgraph.setItemText(ind, current_name)
479
480	def updateGraphCount(self, graph_list):
481	"""
482	Modify the graph name combo and potentially remove
483	deleted graphs
484	"""
485	self.updateGraphCombo(graph_list)
486
487	if not self.active_plots:
488	return
489	new_plots = [PlotHelper.plotById(plot) for plot in graph_list]
490	active_plots_copy = list(self.active_plots.keys())
491	for plot in active_plots_copy:
492	if self.active_plots[plot] in new_plots:
493	continue
494	self.active_plots.pop(plot)
495
496	def updateGraphCombo(self, graph_list):
497	"""
498	Modify Graph combo box on graph add/delete
499	"""
500	orig_text = self.cbgraph.currentText()
501	self.cbgraph.clear()
502	self.cbgraph.insertItems(0, graph_list)
503	ind = self.cbgraph.findText(orig_text)
504	if ind > 0:
505	self.cbgraph.setCurrentIndex(ind)
506
507	def updatePerspectiveCombo(self, index):
508	"""
509	Notify the gui manager about the new perspective chosen.
510	"""
511	self.communicator.perspectiveChangedSignal.emit(self.cbFitting.itemText(index))
512	self.chkBatch.setEnabled(self.parent.perspective().allowBatch())
513
514	def itemFromFilename(self, filename):
515	"""
516	Retrieves model item corresponding to the given filename
517	"""
518	item = GuiUtils.itemFromFilename(filename, self.model)
519	return item
520
521	def displayFile(self, filename=None, is_data=True):
522	"""
523	Forces display of charts for the given filename
524	"""
525	model = self.model if is_data else self.theory_model
526	# Now query the model item for available plots
527	plots = GuiUtils.plotsFromFilename(filename, model)
528	ids = [list(self.active_plots.values())[id].data.id for id in range(len(self.active_plots))]
529
530	new_plots = []
531	for item, plot in plots.items():
532	plot_id = plot.id
533	if plot_id in ids:
534	self.active_plots[plot_id].replacePlot(plot_id, plot)
535	else:
536	# Don't plot intermediate results, e.g. P(Q), S(Q)
537	match = self.theory_plot_ID_pattern.match(plot_id)
538	# 2nd match group contains the identifier for the intermediate result, if present (e.g. "[P(Q)]")
539	if match and match.groups()[1] != None:
540	continue
541	# 'sophisticated' test to generate standalone plot for residuals
542	if 'esiduals' in plot.title:
543	self.plotData([(item, plot)])
544	else:
545	new_plots.append((item, plot))
546
547	if new_plots:
548	self.plotData(new_plots)
549
550	def displayData(self, data_list):
551	"""
552	Forces display of charts for the given data set
553	"""
554	plot_to_show = data_list[0]
555	# passed plot is used ONLY to figure out its title,
556	# so all the charts related by it can be pulled from
557	# the data explorer indices.
558	filename = plot_to_show.filename
559	self.displayFile(filename=filename, is_data=plot_to_show.is_data)
560
561	def addDataPlot2D(self, plot_set, item):
562	"""
563	Create a new 2D plot and add it to the workspace
564	"""
565	plot2D = Plotter2D(self)
566	plot2D.item = item
567	plot2D.plot(plot_set)
568	self.addPlot(plot2D)
569	self.active_plots[plot2D.data.id] = plot2D
570	#============================================
571	# Experimental hook for silx charts
572	#============================================
573	## Attach silx
574	#from silx.gui import qt
575	#from silx.gui.plot import StackView
576	#sv = StackView()
577	#sv.setColormap("jet", autoscale=True)
578	#sv.setStack(plot_set.data.reshape(1,100,100))
579	##sv.setLabels(["x: -10 to 10 (200 samples)",
580	## "y: -10 to 5 (150 samples)"])
581	#sv.show()
582	#============================================
583
584	def plotData(self, plots):
585	"""
586	Takes 1D/2D data and generates a single plot (1D) or multiple plots (2D)
587	"""
588	# Call show on requested plots
589	# All same-type charts in one plot
590	for item, plot_set in plots:
591	if isinstance(plot_set, Data1D):
592	if not 'new_plot' in locals():
593	new_plot = Plotter(self)
594	new_plot.item = item
595	new_plot.plot(plot_set)
596	# active_plots may contain multiple charts
597	self.active_plots[plot_set.id] = new_plot
598	elif isinstance(plot_set, Data2D):
599	self.addDataPlot2D(plot_set, item)
600	else:
601	msg = "Incorrect data type passed to Plotting"
602	raise AttributeError(msg)
603
604	if 'new_plot' in locals() and \
605	hasattr(new_plot, 'data') and \
606	isinstance(new_plot.data, Data1D):
607	self.addPlot(new_plot)
608
609	def newPlot(self):
610	"""
611	Select checked data and plot it
612	"""
613	# Check which tab is currently active
614	if self.current_view == self.treeView:
615	plots = GuiUtils.plotsFromCheckedItems(self.model)
616	else:
617	plots = GuiUtils.plotsFromCheckedItems(self.theory_model)
618
619	self.plotData(plots)
620
621	def addPlot(self, new_plot):
622	"""
623	Helper method for plot bookkeeping
624	"""
625	# Update the global plot counter
626	title = str(PlotHelper.idOfPlot(new_plot))
627	new_plot.setWindowTitle(title)
628
629	# Set the object name to satisfy the Squish object picker
630	new_plot.setObjectName(title)
631
632	# Add the plot to the workspace
633	plot_widget = self.parent.workspace().addSubWindow(new_plot)
634
635	# Show the plot
636	new_plot.show()
637	new_plot.canvas.draw()
638
639	# Update the plot widgets dict
640	self.plot_widgets[title]=plot_widget
641
642	# Update the active chart list
643	#self.active_plots[new_plot.data.id] = new_plot
644
645	def appendPlot(self):
646	"""
647	Add data set(s) to the existing matplotlib chart
648	"""
649	# new plot data; check which tab is currently active
650	if self.current_view == self.treeView:
651	new_plots = GuiUtils.plotsFromCheckedItems(self.model)
652	else:
653	new_plots = GuiUtils.plotsFromCheckedItems(self.theory_model)
654
655	# old plot data
656	plot_id = str(self.cbgraph.currentText())
657
658	assert plot_id in PlotHelper.currentPlots(), "No such plot: %s"%(plot_id)
659
660	old_plot = PlotHelper.plotById(plot_id)
661
662	# Add new data to the old plot, if data type is the same.
663	for _, plot_set in new_plots:
664	if type(plot_set) is type(old_plot._data):
665	old_plot.data = plot_set
666	old_plot.plot()
667
668	def updatePlot(self, new_data):
669	"""
670	Modify existing plot for immediate response
671	"""
672	data = new_data[0]
673	assert type(data).__name__ in ['Data1D', 'Data2D']
674
675	id = data.id
676	if data.id in list(self.active_plots.keys()):
677	self.active_plots[id].replacePlot(id, data)
678
679	def chooseFiles(self):
680	"""
681	Shows the Open file dialog and returns the chosen path(s)
682	"""
683	# List of known extensions
684	wlist = self.getWlist()
685
686	# Location is automatically saved - no need to keep track of the last dir
687	# But only with Qt built-in dialog (non-platform native)
688	paths = QtWidgets.QFileDialog.getOpenFileNames(self, "Choose a file", "",
689	wlist, None, QtWidgets.QFileDialog.DontUseNativeDialog)[0]
690	if not paths:
691	return
692
693	if not isinstance(paths, list):
694	paths = [paths]
695
696	return paths
697
698	def readData(self, path):
699	"""
700	verbatim copy-paste from
701	sasgui.guiframe.local_perspectives.data_loader.data_loader.py
702	slightly modified for clarity
703	"""
704	message = ""
705	log_msg = ''
706	output = {}
707	any_error = False
708	data_error = False
709	error_message = ""
710	number_of_files = len(path)
711	self.communicator.progressBarUpdateSignal.emit(0.0)
712
713	for index, p_file in enumerate(path):
714	basename = os.path.basename(p_file)
715	_, extension = os.path.splitext(basename)
716	if extension.lower() in GuiUtils.EXTENSIONS:
717	any_error = True
718	log_msg = "Data Loader cannot "
719	log_msg += "load: %s\n" % str(p_file)
720	log_msg += """Please try to open that file from "open project" """
721	log_msg += """or "open analysis" menu\n"""
722	error_message = log_msg + "\n"
723	logging.info(log_msg)
724	continue
725
726	try:
727	message = "Loading Data... " + str(basename) + "\n"
728
729	# change this to signal notification in GuiManager
730	self.communicator.statusBarUpdateSignal.emit(message)
731
732	output_objects = self.loader.load(p_file)
733
734	# Some loaders return a list and some just a single Data1D object.
735	# Standardize.
736	if not isinstance(output_objects, list):
737	output_objects = [output_objects]
738
739	for item in output_objects:
740	# cast sascalc.dataloader.data_info.Data1D into
741	# sasgui.guiframe.dataFitting.Data1D
742	# TODO : Fix it
743	new_data = self.manager.create_gui_data(item, p_file)
744	output[new_data.id] = new_data
745
746	# Model update should be protected
747	self.mutex.lock()
748	self.updateModel(new_data, p_file)
749	#self.model.reset()
750	QtWidgets.QApplication.processEvents()
751	self.mutex.unlock()
752
753	if hasattr(item, 'errors'):
754	for error_data in item.errors:
755	data_error = True
756	message += "\tError: {0}\n".format(error_data)
757	else:
758
759	logging.error("Loader returned an invalid object:\n %s" % str(item))
760	data_error = True
761
762	except Exception as ex:
763	logging.error(sys.exc_info()[1])
764
765	any_error = True
766	if any_error or error_message != "":
767	if error_message == "":
768	error = "Error: " + str(sys.exc_info()[1]) + "\n"
769	error += "while loading Data: \n%s\n" % str(basename)
770	error_message += "The data file you selected could not be loaded.\n"
771	error_message += "Make sure the content of your file"
772	error_message += " is properly formatted.\n\n"
773	error_message += "When contacting the SasView team, mention the"
774	error_message += " following:\n%s" % str(error)
775	elif data_error:
776	base_message = "Errors occurred while loading "
777	base_message += "{0}\n".format(basename)
778	base_message += "The data file loaded but with errors.\n"
779	error_message = base_message + error_message
780	else:
781	error_message += "%s\n" % str(p_file)
782
783	current_percentage = int(100.0* index/number_of_files)
784	self.communicator.progressBarUpdateSignal.emit(current_percentage)
785
786	if any_error or error_message:
787	logging.error(error_message)
788	status_bar_message = "Errors occurred while loading %s" % format(basename)
789	self.communicator.statusBarUpdateSignal.emit(status_bar_message)
790
791	else:
792	message = "Loading Data Complete! "
793	message += log_msg
794	# Notify the progress bar that the updates are over.
795	self.communicator.progressBarUpdateSignal.emit(-1)
796	self.communicator.statusBarUpdateSignal.emit(message)
797
798	return output, message
799
800	def getWlist(self):
801	"""
802	Wildcards of files we know the format of.
803	"""
804	# Display the Qt Load File module
805	cards = self.loader.get_wildcards()
806
807	# get rid of the wx remnant in wildcards
808	# TODO: modify sasview loader get_wildcards method, after merge,
809	# so this kludge can be avoided
810	new_cards = []
811	for item in cards:
812	new_cards.append(item[:item.find("\|")])
813	wlist = ';;'.join(new_cards)
814
815	return wlist
816
817	def selectData(self, index):
818	"""
819	Callback method for modifying the TreeView on Selection Options change
820	"""
821	if not isinstance(index, int):
822	msg = "Incorrect type passed to DataExplorer.selectData()"
823	raise AttributeError(msg)
824
825	# Respond appropriately
826	if index == 0:
827	# Select All
828	for index in range(self.model.rowCount()):
829	item = self.model.item(index)
830	if item.isCheckable() and item.checkState() == QtCore.Qt.Unchecked:
831	item.setCheckState(QtCore.Qt.Checked)
832	elif index == 1:
833	# De-select All
834	for index in range(self.model.rowCount()):
835	item = self.model.item(index)
836	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
837	item.setCheckState(QtCore.Qt.Unchecked)
838
839	elif index == 2:
840	# Select All 1-D
841	for index in range(self.model.rowCount()):
842	item = self.model.item(index)
843	item.setCheckState(QtCore.Qt.Unchecked)
844
845	try:
846	is1D = isinstance(GuiUtils.dataFromItem(item), Data1D)
847	except AttributeError:
848	msg = "Bad structure of the data model."
849	raise RuntimeError(msg)
850
851	if is1D:
852	item.setCheckState(QtCore.Qt.Checked)
853
854	elif index == 3:
855	# Unselect All 1-D
856	for index in range(self.model.rowCount()):
857	item = self.model.item(index)
858
859	try:
860	is1D = isinstance(GuiUtils.dataFromItem(item), Data1D)
861	except AttributeError:
862	msg = "Bad structure of the data model."
863	raise RuntimeError(msg)
864
865	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked and is1D:
866	item.setCheckState(QtCore.Qt.Unchecked)
867
868	elif index == 4:
869	# Select All 2-D
870	for index in range(self.model.rowCount()):
871	item = self.model.item(index)
872	item.setCheckState(QtCore.Qt.Unchecked)
873	try:
874	is2D = isinstance(GuiUtils.dataFromItem(item), Data2D)
875	except AttributeError:
876	msg = "Bad structure of the data model."
877	raise RuntimeError(msg)
878
879	if is2D:
880	item.setCheckState(QtCore.Qt.Checked)
881
882	elif index == 5:
883	# Unselect All 2-D
884	for index in range(self.model.rowCount()):
885	item = self.model.item(index)
886
887	try:
888	is2D = isinstance(GuiUtils.dataFromItem(item), Data2D)
889	except AttributeError:
890	msg = "Bad structure of the data model."
891	raise RuntimeError(msg)
892
893	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked and is2D:
894	item.setCheckState(QtCore.Qt.Unchecked)
895
896	else:
897	msg = "Incorrect value in the Selection Option"
898	# Change this to a proper logging action
899	raise Exception(msg)
900
901	def contextMenu(self):
902	"""
903	Define actions and layout of the right click context menu
904	"""
905	# Create a custom menu based on actions defined in the UI file
906	self.context_menu = QtWidgets.QMenu(self)
907	self.context_menu.addAction(self.actionDataInfo)
908	self.context_menu.addAction(self.actionSaveAs)
909	self.context_menu.addAction(self.actionQuickPlot)
910	self.context_menu.addSeparator()
911	self.context_menu.addAction(self.actionQuick3DPlot)
912	self.context_menu.addAction(self.actionEditMask)
913	self.context_menu.addSeparator()
914	self.context_menu.addAction(self.actionDelete)
915
916
917	# Define the callbacks
918	self.actionDataInfo.triggered.connect(self.showDataInfo)
919	self.actionSaveAs.triggered.connect(self.saveDataAs)
920	self.actionQuickPlot.triggered.connect(self.quickDataPlot)
921	self.actionQuick3DPlot.triggered.connect(self.quickData3DPlot)
922	self.actionEditMask.triggered.connect(self.showEditDataMask)
923	self.actionDelete.triggered.connect(self.deleteItem)
924
925	def onCustomContextMenu(self, position):
926	"""
927	Show the right-click context menu in the data treeview
928	"""
929	index = self.current_view.indexAt(position)
930	proxy = self.current_view.model()
931	model = proxy.sourceModel()
932
933	if index.isValid():
934	model_item = model.itemFromIndex(proxy.mapToSource(index))
935	# Find the mapped index
936	orig_index = model_item.isCheckable()
937	if orig_index:
938	# Check the data to enable/disable actions
939	is_2D = isinstance(GuiUtils.dataFromItem(model_item), Data2D)
940	self.actionQuick3DPlot.setEnabled(is_2D)
941	self.actionEditMask.setEnabled(is_2D)
942	# Fire up the menu
943	self.context_menu.exec_(self.current_view.mapToGlobal(position))
944
945	def showDataInfo(self):
946	"""
947	Show a simple read-only text edit with data information.
948	"""
949	index = self.current_view.selectedIndexes()[0]
950	proxy = self.current_view.model()
951	model = proxy.sourceModel()
952	model_item = model.itemFromIndex(proxy.mapToSource(index))
953
954	data = GuiUtils.dataFromItem(model_item)
955	if isinstance(data, Data1D):
956	text_to_show = GuiUtils.retrieveData1d(data)
957	# Hardcoded sizes to enable full width rendering with default font
958	self.txt_widget.resize(420,600)
959	else:
960	text_to_show = GuiUtils.retrieveData2d(data)
961	# Hardcoded sizes to enable full width rendering with default font
962	self.txt_widget.resize(700,600)
963
964	self.txt_widget.setReadOnly(True)
965	self.txt_widget.setWindowFlags(QtCore.Qt.Window)
966	self.txt_widget.setWindowIcon(QtGui.QIcon(":/res/ball.ico"))
967	self.txt_widget.setWindowTitle("Data Info: %s" % data.filename)
968	self.txt_widget.clear()
969	self.txt_widget.insertPlainText(text_to_show)
970
971	self.txt_widget.show()
972	# Move the slider all the way up, if present
973	vertical_scroll_bar = self.txt_widget.verticalScrollBar()
974	vertical_scroll_bar.triggerAction(QtWidgets.QScrollBar.SliderToMinimum)
975
976	def saveDataAs(self):
977	"""
978	Save the data points as either txt or xml
979	"""
980	index = self.current_view.selectedIndexes()[0]
981	proxy = self.current_view.model()
982	model = proxy.sourceModel()
983	model_item = model.itemFromIndex(proxy.mapToSource(index))
984
985	data = GuiUtils.dataFromItem(model_item)
986	if isinstance(data, Data1D):
987	GuiUtils.saveData1D(data)
988	else:
989	GuiUtils.saveData2D(data)
990
991	def quickDataPlot(self):
992	"""
993	Frozen plot - display an image of the plot
994	"""
995	index = self.current_view.selectedIndexes()[0]
996	proxy = self.current_view.model()
997	model = proxy.sourceModel()
998	model_item = model.itemFromIndex(proxy.mapToSource(index))
999
1000	data = GuiUtils.dataFromItem(model_item)
1001
1002	method_name = 'Plotter'
1003	if isinstance(data, Data2D):
1004	method_name='Plotter2D'
1005
1006	self.new_plot = globals()[method_name](self, quickplot=True)
1007	self.new_plot.data = data
1008	#new_plot.plot(marker='o')
1009	self.new_plot.plot()
1010
1011	# Update the global plot counter
1012	title = "Plot " + data.name
1013	self.new_plot.setWindowTitle(title)
1014
1015	# Show the plot
1016	self.new_plot.show()
1017
1018	def quickData3DPlot(self):
1019	"""
1020	Slowish 3D plot
1021	"""
1022	index = self.current_view.selectedIndexes()[0]
1023	proxy = self.current_view.model()
1024	model = proxy.sourceModel()
1025	model_item = model.itemFromIndex(proxy.mapToSource(index))
1026
1027	data = GuiUtils.dataFromItem(model_item)
1028
1029	self.new_plot = Plotter2D(self, quickplot=True, dimension=3)
1030	self.new_plot.data = data
1031	self.new_plot.plot()
1032
1033	# Update the global plot counter
1034	title = "Plot " + data.name
1035	self.new_plot.setWindowTitle(title)
1036
1037	# Show the plot
1038	self.new_plot.show()
1039
1040	def showEditDataMask(self, data=None):
1041	"""
1042	Mask Editor for 2D plots
1043	"""
1044	if data is None or not isinstance(data, Data2D):
1045	index = self.current_view.selectedIndexes()[0]
1046	proxy = self.current_view.model()
1047	model = proxy.sourceModel()
1048	model_item = model.itemFromIndex(proxy.mapToSource(index))
1049
1050	data = GuiUtils.dataFromItem(model_item)
1051
1052	mask_editor = MaskEditor(self, data)
1053	# Modal dialog here.
1054	mask_editor.exec_()
1055
1056	def deleteItem(self):
1057	"""
1058	Delete the current item
1059	"""
1060	# Assure this is indeed wanted
1061	delete_msg = "This operation will delete the selected data sets " +\
1062	"and all the dependents." +\
1063	"\nDo you want to continue?"
1064	reply = QtWidgets.QMessageBox.question(self,
1065	'Warning',
1066	delete_msg,
1067	QtWidgets.QMessageBox.Yes,
1068	QtWidgets.QMessageBox.No)
1069
1070	if reply == QtWidgets.QMessageBox.No:
1071	return
1072
1073	# Every time a row is removed, the indices change, so we'll just remove
1074	# rows and keep calling selectedIndexes until it returns an empty list.
1075	indices = self.current_view.selectedIndexes()
1076
1077	proxy = self.current_view.model()
1078	model = proxy.sourceModel()
1079
1080	deleted_items = []
1081	deleted_names = []
1082
1083	while len(indices) > 0:
1084	index = indices[0]
1085	row_index = proxy.mapToSource(index)
1086	item_to_delete = model.itemFromIndex(row_index)
1087	if item_to_delete and item_to_delete.isCheckable():
1088	row = row_index.row()
1089
1090	# store the deleted item details so we can pass them on later
1091	deleted_names.append(item_to_delete.text())
1092	deleted_items.append(item_to_delete)
1093
1094	# Delete corresponding open plots
1095	self.closePlotsForItem(item_to_delete)
1096
1097	if item_to_delete.parent():
1098	# We have a child item - delete from it
1099	item_to_delete.parent().removeRow(row)
1100	else:
1101	# delete directly from model
1102	model.removeRow(row)
1103	indices = self.current_view.selectedIndexes()
1104
1105	# Let others know we deleted data
1106	self.communicator.dataDeletedSignal.emit(deleted_items)
1107
1108	# update stored_data
1109	self.manager.update_stored_data(deleted_names)
1110
1111	def closePlotsForItem(self, item):
1112	"""
1113	Given standard item, close all its currently displayed plots
1114	"""
1115	# item - HashableStandardItems of active plots
1116
1117	# {} -> 'Graph1' : HashableStandardItem()
1118	current_plot_items = {}
1119	for plot_name in PlotHelper.currentPlots():
1120	current_plot_items[plot_name] = PlotHelper.plotById(plot_name).item
1121
1122	# item and its hashable children
1123	items_being_deleted = []
1124	if item.rowCount() > 0:
1125	items_being_deleted = [item.child(n) for n in range(item.rowCount())
1126	if isinstance(item.child(n), GuiUtils.HashableStandardItem)]
1127	items_being_deleted.append(item)
1128	# Add the parent in case a child is selected
1129	if isinstance(item.parent(), GuiUtils.HashableStandardItem):
1130	items_being_deleted.append(item.parent())
1131
1132	# Compare plot items and items to delete
1133	plots_to_close = set(current_plot_items.values()) & set(items_being_deleted)
1134
1135	for plot_item in plots_to_close:
1136	for plot_name in current_plot_items.keys():
1137	if plot_item == current_plot_items[plot_name]:
1138	plotter = PlotHelper.plotById(plot_name)
1139	# try to delete the plot
1140	try:
1141	plotter.close()
1142	#self.parent.workspace().removeSubWindow(plotter)
1143	self.plot_widgets[plot_name].close()
1144	self.plot_widgets.pop(plot_name, None)
1145	except AttributeError as ex:
1146	logging.error("Closing of %s failed:\n %s" % (plot_name, str(ex)))
1147
1148	pass # debugger anchor
1149
1150	def onAnalysisUpdate(self, new_perspective=""):
1151	"""
1152	Update the perspective combo index based on passed string
1153	"""
1154	assert new_perspective in Perspectives.PERSPECTIVES.keys()
1155	self.cbFitting.blockSignals(True)
1156	self.cbFitting.setCurrentIndex(self.cbFitting.findText(new_perspective))
1157	self.cbFitting.blockSignals(False)
1158	pass
1159
1160	def loadComplete(self, output):
1161	"""
1162	Post message to status bar and update the data manager
1163	"""
1164	assert isinstance(output, tuple)
1165
1166	# Reset the model so the view gets updated.
1167	#self.model.reset()
1168	self.communicator.progressBarUpdateSignal.emit(-1)
1169
1170	output_data = output[0]
1171	message = output[1]
1172	# Notify the manager of the new data available
1173	self.communicator.statusBarUpdateSignal.emit(message)
1174	self.communicator.fileDataReceivedSignal.emit(output_data)
1175	self.manager.add_data(data_list=output_data)
1176
1177	def loadFailed(self, reason):
1178	print("File Load Failed with:\n", reason)
1179	pass
1180
1181	def updateModel(self, data, p_file):
1182	"""
1183	Add data and Info fields to the model item
1184	"""
1185	# Structure of the model
1186	# checkbox + basename
1187	# \|-------> Data.D object
1188	# \|-------> Info
1189	# \|----> Title:
1190	# \|----> Run:
1191	# \|----> Type:
1192	# \|----> Path:
1193	# \|----> Process
1194	# \|-----> process[0].name
1195	# \|-------> THEORIES
1196
1197	# Top-level item: checkbox with label
1198	checkbox_item = GuiUtils.HashableStandardItem()
1199	checkbox_item.setCheckable(True)
1200	checkbox_item.setCheckState(QtCore.Qt.Checked)
1201	checkbox_item.setText(os.path.basename(p_file))
1202
1203	# Add the actual Data1D/Data2D object
1204	object_item = GuiUtils.HashableStandardItem()
1205	object_item.setData(data)
1206
1207	checkbox_item.setChild(0, object_item)
1208
1209	# Add rows for display in the view
1210	info_item = GuiUtils.infoFromData(data)
1211
1212	# Set info_item as the first child
1213	checkbox_item.setChild(1, info_item)
1214
1215	# Caption for the theories
1216	checkbox_item.setChild(2, QtGui.QStandardItem("THEORIES"))
1217
1218	# New row in the model
1219	self.model.beginResetModel()
1220	self.model.appendRow(checkbox_item)
1221	self.model.endResetModel()
1222
1223	def updateModelFromPerspective(self, model_item):
1224	"""
1225	Receive an update model item from a perspective
1226	Make sure it is valid and if so, replace it in the model
1227	"""
1228	# Assert the correct type
1229	if not isinstance(model_item, QtGui.QStandardItem):
1230	msg = "Wrong data type returned from calculations."
1231	raise AttributeError(msg)
1232
1233	# TODO: Assert other properties
1234
1235	# Reset the view
1236	##self.model.reset()
1237	# Pass acting as a debugger anchor
1238	pass
1239
1240	def updateTheoryFromPerspective(self, model_item):
1241	"""
1242	Receive an update theory item from a perspective
1243	Make sure it is valid and if so, replace/add in the model
1244	"""
1245	# Assert the correct type
1246	if not isinstance(model_item, QtGui.QStandardItem):
1247	msg = "Wrong data type returned from calculations."
1248	raise AttributeError(msg)
1249
1250	# Check if there are any other items for this tab
1251	# If so, delete them
1252	current_tab_name = model_item.text()
1253	for current_index in range(self.theory_model.rowCount()):
1254	#if current_tab_name in self.theory_model.item(current_index).text():
1255	if current_tab_name == self.theory_model.item(current_index).text():
1256	return
1257	self.theory_model.removeRow(current_index)
1258	break
1259
1260	# send in the new item
1261	self.theory_model.appendRow(model_item)
1262

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SasView

source: sasview/src/sas/qtgui/MainWindow/DataExplorer.py @ 799963c

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