DataExplorer.py @ 6b43c58

Last change on this file since 6b43c58 was 88e1f57, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Fixed chart update upon consecutive fitting. Fixed 1D default charts - now only two (combined data/fit + residuals) Minor text fixes
Property mode set to `100644`
File size: 38.6 KB

Line
1	# global
2	import sys
3	import os
4	import time
5	import logging
6
7	from PyQt4 import QtCore
8	from PyQt4 import QtGui
9	from PyQt4 import QtWebKit
10	from PyQt4.Qt import QMutex
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	class DataExplorerWindow(DroppableDataLoadWidget):
33	# The controller which is responsible for managing signal slots connections
34	# for the gui and providing an interface to the data model.
35
36	def __init__(self, parent=None, guimanager=None, manager=None):
37	super(DataExplorerWindow, self).__init__(parent, guimanager)
38
39	# Main model for keeping loaded data
40	self.model = QtGui.QStandardItemModel(self)
41
42	# Secondary model for keeping frozen data sets
43	self.theory_model = QtGui.QStandardItemModel(self)
44
45	# GuiManager is the actual parent, but we needed to also pass the QMainWindow
46	# in order to set the widget parentage properly.
47	self.parent = guimanager
48	self.loader = Loader()
49	self.manager = manager if manager is not None else DataManager()
50	self.txt_widget = QtGui.QTextEdit(None)
51
52	# Be careful with twisted threads.
53	self.mutex = QMutex()
54
55	# Active plots
56	self.active_plots = {}
57
58	# Connect the buttons
59	self.cmdLoad.clicked.connect(self.loadFile)
60	self.cmdDeleteData.clicked.connect(self.deleteFile)
61	self.cmdDeleteTheory.clicked.connect(self.deleteTheory)
62	self.cmdFreeze.clicked.connect(self.freezeTheory)
63	self.cmdSendTo.clicked.connect(self.sendData)
64	self.cmdNew.clicked.connect(self.newPlot)
65	self.cmdNew_2.clicked.connect(self.newPlot)
66	self.cmdAppend.clicked.connect(self.appendPlot)
67	self.cmdHelp.clicked.connect(self.displayHelp)
68	self.cmdHelp_2.clicked.connect(self.displayHelp)
69
70	# Display HTML content
71	self._helpView = QtWebKit.QWebView()
72
73	# Fill in the perspectives combo
74	self.initPerspectives()
75
76	# Custom context menu
77	self.treeView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
78	self.treeView.customContextMenuRequested.connect(self.onCustomContextMenu)
79	self.contextMenu()
80
81	# Same menus for the theory view
82	self.freezeView.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
83	self.freezeView.customContextMenuRequested.connect(self.onCustomContextMenu)
84
85	# Connect the comboboxes
86	self.cbSelect.currentIndexChanged.connect(self.selectData)
87
88	#self.closeEvent.connect(self.closeEvent)
89	self.currentChanged.connect(self.onTabSwitch)
90	self.communicator = self.parent.communicator()
91	self.communicator.fileReadSignal.connect(self.loadFromURL)
92	self.communicator.activeGraphsSignal.connect(self.updateGraphCount)
93	self.communicator.activeGraphName.connect(self.updatePlotName)
94	self.communicator.plotUpdateSignal.connect(self.updatePlot)
95
96	self.cbgraph.editTextChanged.connect(self.enableGraphCombo)
97	self.cbgraph.currentIndexChanged.connect(self.enableGraphCombo)
98
99	# Proxy model for showing a subset of Data1D/Data2D content
100	self.data_proxy = QtGui.QSortFilterProxyModel(self)
101	self.data_proxy.setSourceModel(self.model)
102
103	# Don't show "empty" rows with data objects
104	self.data_proxy.setFilterRegExp(r"[^()]")
105
106	# The Data viewer is QTreeView showing the proxy model
107	self.treeView.setModel(self.data_proxy)
108
109	# Proxy model for showing a subset of Theory content
110	self.theory_proxy = QtGui.QSortFilterProxyModel(self)
111	self.theory_proxy.setSourceModel(self.theory_model)
112
113	# Don't show "empty" rows with data objects
114	self.theory_proxy.setFilterRegExp(r"[^()]")
115
116	# Theory model view
117	self.freezeView.setModel(self.theory_proxy)
118
119	self.enableGraphCombo(None)
120
121	# Current view on model
122	self.current_view = self.treeView
123
124	def closeEvent(self, event):
125	"""
126	Overwrite the close event - no close!
127	"""
128	event.ignore()
129
130	def onTabSwitch(self, index):
131	""" Callback for tab switching signal """
132	if index == 0:
133	self.current_view = self.treeView
134	else:
135	self.current_view = self.freezeView
136
137	def displayHelp(self):
138	"""
139	Show the "Loading data" section of help
140	"""
141	tree_location = GuiUtils.HELP_DIRECTORY_LOCATION +\
142	"/user/sasgui/guiframe/data_explorer_help.html"
143	self._helpView.load(QtCore.QUrl(tree_location))
144	self._helpView.show()
145
146	def enableGraphCombo(self, combo_text):
147	"""
148	Enables/disables "Assign Plot" elements
149	"""
150	self.cbgraph.setEnabled(len(PlotHelper.currentPlots()) > 0)
151	self.cmdAppend.setEnabled(len(PlotHelper.currentPlots()) > 0)
152
153	def initPerspectives(self):
154	"""
155	Populate the Perspective combobox and define callbacks
156	"""
157	available_perspectives = sorted([p for p in Perspectives.PERSPECTIVES.keys()])
158	if available_perspectives:
159	self.cbFitting.clear()
160	self.cbFitting.addItems(available_perspectives)
161	self.cbFitting.currentIndexChanged.connect(self.updatePerspectiveCombo)
162	# Set the index so we see the default (Fitting)
163	self.updatePerspectiveCombo(0)
164
165	def _perspective(self):
166	"""
167	Returns the current perspective
168	"""
169	return self.parent.perspective()
170
171	def loadFromURL(self, url):
172	"""
173	Threaded file load
174	"""
175	load_thread = threads.deferToThread(self.readData, url)
176	load_thread.addCallback(self.loadComplete)
177
178	def loadFile(self, event=None):
179	"""
180	Called when the "Load" button pressed.
181	Opens the Qt "Open File..." dialog
182	"""
183	path_str = self.chooseFiles()
184	if not path_str:
185	return
186	self.loadFromURL(path_str)
187
188	def loadFolder(self, event=None):
189	"""
190	Called when the "File/Load Folder" menu item chosen.
191	Opens the Qt "Open Folder..." dialog
192	"""
193	folder = QtGui.QFileDialog.getExistingDirectory(self, "Choose a directory", "",
194	QtGui.QFileDialog.ShowDirsOnly \| QtGui.QFileDialog.DontUseNativeDialog)
195	if folder is None:
196	return
197
198	folder = str(folder)
199
200	if not os.path.isdir(folder):
201	return
202
203	# get content of dir into a list
204	path_str = [os.path.join(os.path.abspath(folder), filename)
205	for filename in os.listdir(folder)]
206
207	self.loadFromURL(path_str)
208
209	def loadProject(self):
210	"""
211	Called when the "Open Project" menu item chosen.
212	"""
213	kwargs = {
214	'parent' : self,
215	'caption' : 'Open Project',
216	'filter' : 'Project (.json);;All files (.*)',
217	'options' : QtGui.QFileDialog.DontUseNativeDialog
218	}
219	filename = str(QtGui.QFileDialog.getOpenFileName(**kwargs))
220	if filename:
221	load_thread = threads.deferToThread(self.readProject, filename)
222	load_thread.addCallback(self.readProjectComplete)
223
224	def readProject(self, filename):
225	self.communicator.statusBarUpdateSignal.emit("Loading Project... %s" % os.path.basename(filename))
226	try:
227	manager = DataManager()
228	with open(filename, 'r') as infile:
229	manager.load_from_readable(infile)
230
231	self.communicator.statusBarUpdateSignal.emit("Loaded Project: %s" % os.path.basename(filename))
232	return manager
233
234	except:
235	self.communicator.statusBarUpdateSignal.emit("Failed: %s" % os.path.basename(filename))
236	raise
237
238	def readProjectComplete(self, manager):
239	self.model.clear()
240
241	self.manager.assign(manager)
242	for id, item in self.manager.get_all_data().iteritems():
243	self.updateModel(item.data, item.path)
244
245	self.model.reset()
246
247	def saveProject(self):
248	"""
249	Called when the "Save Project" menu item chosen.
250	"""
251	kwargs = {
252	'parent' : self,
253	'caption' : 'Save Project',
254	'filter' : 'Project (*.json)',
255	'options' : QtGui.QFileDialog.DontUseNativeDialog
256	}
257	filename = str(QtGui.QFileDialog.getSaveFileName(**kwargs))
258	if filename:
259	self.communicator.statusBarUpdateSignal.emit("Saving Project... %s\n" % os.path.basename(filename))
260	with open(filename, 'w') as outfile:
261	self.manager.save_to_writable(outfile)
262
263	def deleteFile(self, event):
264	"""
265	Delete selected rows from the model
266	"""
267	# Assure this is indeed wanted
268	delete_msg = "This operation will delete the checked data sets and all the dependents." +\
269	"\nDo you want to continue?"
270	reply = QtGui.QMessageBox.question(self,
271	'Warning',
272	delete_msg,
273	QtGui.QMessageBox.Yes,
274	QtGui.QMessageBox.No)
275
276	if reply == QtGui.QMessageBox.No:
277	return
278
279	# Figure out which rows are checked
280	ind = -1
281	# Use 'while' so the row count is forced at every iteration
282	deleted_indices = []
283	deleted_names = []
284	while ind < self.model.rowCount():
285	ind += 1
286	item = self.model.item(ind)
287
288	if item and item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
289	# Delete these rows from the model
290	deleted_names.append(str(self.model.item(ind).text()))
291	deleted_indices.append(item)
292
293	self.model.removeRow(ind)
294	# Decrement index since we just deleted it
295	ind -= 1
296
297	# Let others know we deleted data
298	self.communicator.dataDeletedSignal.emit(deleted_indices)
299
300	# update stored_data
301	self.manager.update_stored_data(deleted_names)
302
303	def deleteTheory(self, event):
304	"""
305	Delete selected rows from the theory model
306	"""
307	# Assure this is indeed wanted
308	delete_msg = "This operation will delete the checked data sets and all the dependents." +\
309	"\nDo you want to continue?"
310	reply = QtGui.QMessageBox.question(self,
311	'Warning',
312	delete_msg,
313	QtGui.QMessageBox.Yes,
314	QtGui.QMessageBox.No)
315
316	if reply == QtGui.QMessageBox.No:
317	return
318
319	# Figure out which rows are checked
320	ind = -1
321	# Use 'while' so the row count is forced at every iteration
322	while ind < self.theory_model.rowCount():
323	ind += 1
324	item = self.theory_model.item(ind)
325	if item and item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
326	# Delete these rows from the model
327	self.theory_model.removeRow(ind)
328	# Decrement index since we just deleted it
329	ind -= 1
330
331	# pass temporarily kept as a breakpoint anchor
332	pass
333
334	def sendData(self, event):
335	"""
336	Send selected item data to the current perspective and set the relevant notifiers
337	"""
338	# Set the signal handlers
339	self.communicator.updateModelFromPerspectiveSignal.connect(self.updateModelFromPerspective)
340
341	def isItemReady(index):
342	item = self.model.item(index)
343	return item.isCheckable() and item.checkState() == QtCore.Qt.Checked
344
345	# Figure out which rows are checked
346	selected_items = [self.model.item(index)
347	for index in xrange(self.model.rowCount())
348	if isItemReady(index)]
349
350	if len(selected_items) < 1:
351	return
352
353	# Which perspective has been selected?
354	if len(selected_items) > 1 and not self._perspective().allowBatch():
355	msg = self._perspective().title() + " does not allow multiple data."
356	msgbox = QtGui.QMessageBox()
357	msgbox.setIcon(QtGui.QMessageBox.Critical)
358	msgbox.setText(msg)
359	msgbox.setStandardButtons(QtGui.QMessageBox.Ok)
360	retval = msgbox.exec_()
361	return
362
363	# Notify the GuiManager about the send request
364	self._perspective().setData(data_item=selected_items, is_batch=self.chkBatch.isChecked())
365
366	def freezeTheory(self, event):
367	"""
368	Freeze selected theory rows.
369
370	"Freezing" means taking the plottable data from the Theory item
371	and copying it to a separate top-level item in Data.
372	"""
373	# Figure out which rows are checked
374	# Use 'while' so the row count is forced at every iteration
375	outer_index = -1
376	theories_copied = 0
377	while outer_index < self.theory_model.rowCount():
378	outer_index += 1
379	outer_item = self.theory_model.item(outer_index)
380	if not outer_item:
381	continue
382	if outer_item.isCheckable() and \
383	outer_item.checkState() == QtCore.Qt.Checked:
384	theories_copied += 1
385	new_item = self.recursivelyCloneItem(outer_item)
386	# Append a "unique" descriptor to the name
387	time_bit = str(time.time())[7:-1].replace('.', '')
388	new_name = new_item.text() + '_@' + time_bit
389	new_item.setText(new_name)
390	self.model.appendRow(new_item)
391	self.model.reset()
392
393	freeze_msg = ""
394	if theories_copied == 0:
395	return
396	elif theories_copied == 1:
397	freeze_msg = "1 theory copied from the Theory tab as a data set"
398	elif theories_copied > 1:
399	freeze_msg = "%i theories copied from the Theory tab as data sets" % theories_copied
400	else:
401	freeze_msg = "Unexpected number of theories copied: %i" % theories_copied
402	raise AttributeError, freeze_msg
403	self.communicator.statusBarUpdateSignal.emit(freeze_msg)
404	# Actively switch tabs
405	self.setCurrentIndex(1)
406
407	def recursivelyCloneItem(self, item):
408	"""
409	Clone QStandardItem() object
410	"""
411	new_item = item.clone()
412	# clone doesn't do deepcopy :(
413	for child_index in xrange(item.rowCount()):
414	child_item = self.recursivelyCloneItem(item.child(child_index))
415	new_item.setChild(child_index, child_item)
416	return new_item
417
418	def updatePlotName(self, name_tuple):
419	"""
420	Modify the name of the current plot
421	"""
422	old_name, current_name = name_tuple
423	ind = self.cbgraph.findText(old_name)
424	self.cbgraph.setCurrentIndex(ind)
425	self.cbgraph.setItemText(ind, current_name)
426
427	def updateGraphCount(self, graph_list):
428	"""
429	Modify the graph name combo and potentially remove
430	deleted graphs
431	"""
432	self.updateGraphCombo(graph_list)
433
434	if not self.active_plots:
435	return
436	new_plots = [PlotHelper.plotById(plot) for plot in graph_list]
437	active_plots_copy = self.active_plots.keys()
438	for plot in active_plots_copy:
439	if self.active_plots[plot] in new_plots:
440	continue
441	self.active_plots.pop(plot)
442
443	def updateGraphCombo(self, graph_list):
444	"""
445	Modify Graph combo box on graph add/delete
446	"""
447	orig_text = self.cbgraph.currentText()
448	self.cbgraph.clear()
449	self.cbgraph.insertItems(0, graph_list)
450	ind = self.cbgraph.findText(orig_text)
451	if ind > 0:
452	self.cbgraph.setCurrentIndex(ind)
453
454	def updatePerspectiveCombo(self, index):
455	"""
456	Notify the gui manager about the new perspective chosen.
457	"""
458	self.communicator.perspectiveChangedSignal.emit(self.cbFitting.currentText())
459	self.chkBatch.setEnabled(self.parent.perspective().allowBatch())
460
461	def displayData(self, data_list):
462	"""
463	Forces display of charts for the given filename
464	"""
465	plot_to_show = data_list[0]
466
467	# passed plot is used ONLY to figure out its title,
468	# so all the charts related by it can be pulled from
469	# the data explorer indices.
470	filename = plot_to_show.filename
471	model = self.model if plot_to_show.is_data else self.theory_model
472
473	# Now query the model item for available plots
474	plots = GuiUtils.plotsFromFilename(filename, model)
475	item = GuiUtils.itemFromFilename(filename, model)
476
477	new_plots = []
478	for plot in plots:
479	plot_id = plot.id
480	if plot_id in self.active_plots.keys():
481	self.active_plots[plot_id].replacePlot(plot_id, plot)
482	else:
483	# 'sophisticated' test to generate standalone plot for residuals
484	if 'esiduals' in plot.title:
485	self.plotData([(item, plot)])
486	else:
487	new_plots.append((item, plot))
488
489	if new_plots:
490	self.plotData(new_plots)
491
492	def addDataPlot2D(self, plot_set, item):
493	"""
494	Create a new 2D plot and add it to the workspace
495	"""
496	plot2D = Plotter2D(self)
497	plot2D.item = item
498	plot2D.plot(plot_set)
499	self.addPlot(plot2D)
500	self.active_plots[plot2D.data.id] = plot2D
501	#============================================
502	# Experimental hook for silx charts
503	#============================================
504	## Attach silx
505	#from silx.gui import qt
506	#from silx.gui.plot import StackView
507	#sv = StackView()
508	#sv.setColormap("jet", autoscale=True)
509	#sv.setStack(plot_set.data.reshape(1,100,100))
510	##sv.setLabels(["x: -10 to 10 (200 samples)",
511	## "y: -10 to 5 (150 samples)"])
512	#sv.show()
513	#============================================
514
515	def plotData(self, plots):
516	"""
517	Takes 1D/2D data and generates a single plot (1D) or multiple plots (2D)
518	"""
519	# Call show on requested plots
520	# All same-type charts in one plot
521	for item, plot_set in plots:
522	if isinstance(plot_set, Data1D):
523	if not 'new_plot' in locals():
524	new_plot = Plotter(self)
525	new_plot.plot(plot_set)
526	# active_plots may contain multiple charts
527	self.active_plots[plot_set.id] = new_plot
528	elif isinstance(plot_set, Data2D):
529	self.addDataPlot2D(plot_set, item)
530	else:
531	msg = "Incorrect data type passed to Plotting"
532	raise AttributeError, msg
533
534	if 'new_plot' in locals() and \
535	hasattr(new_plot, 'data') and \
536	isinstance(new_plot.data, Data1D):
537	self.addPlot(new_plot)
538
539	def newPlot(self):
540	"""
541	Select checked data and plot it
542	"""
543	# Check which tab is currently active
544	if self.current_view == self.treeView:
545	plots = GuiUtils.plotsFromCheckedItems(self.model)
546	else:
547	plots = GuiUtils.plotsFromCheckedItems(self.theory_model)
548
549	self.plotData(plots)
550
551	def addPlot(self, new_plot):
552	"""
553	Helper method for plot bookkeeping
554	"""
555	# Update the global plot counter
556	title = str(PlotHelper.idOfPlot(new_plot))
557	new_plot.setWindowTitle(title)
558
559	# Set the object name to satisfy the Squish object picker
560	new_plot.setObjectName(title)
561
562	# Add the plot to the workspace
563	self.parent.workspace().addWindow(new_plot)
564
565	# Show the plot
566	new_plot.show()
567
568	# Update the active chart list
569	#self.active_plots[new_plot.data.id] = new_plot
570
571	def appendPlot(self):
572	"""
573	Add data set(s) to the existing matplotlib chart
574	"""
575	# new plot data
576	new_plots = GuiUtils.plotsFromCheckedItems(self.model)
577
578	# old plot data
579	plot_id = str(self.cbgraph.currentText())
580
581	assert plot_id in PlotHelper.currentPlots(), "No such plot: %s"%(plot_id)
582
583	old_plot = PlotHelper.plotById(plot_id)
584
585	# Add new data to the old plot, if data type is the same.
586	for _, plot_set in new_plots:
587	if type(plot_set) is type(old_plot._data):
588	old_plot.data = plot_set
589	old_plot.plot()
590
591	def updatePlot(self, new_data):
592	"""
593	Modify existing plot for immediate response
594	"""
595	data = new_data[0]
596	assert type(data).__name__ in ['Data1D', 'Data2D']
597
598	id = data.id
599	if data.id in self.active_plots.keys():
600	self.active_plots[id].replacePlot(id, data)
601
602	def chooseFiles(self):
603	"""
604	Shows the Open file dialog and returns the chosen path(s)
605	"""
606	# List of known extensions
607	wlist = self.getWlist()
608
609	# Location is automatically saved - no need to keep track of the last dir
610	# But only with Qt built-in dialog (non-platform native)
611	paths = QtGui.QFileDialog.getOpenFileNames(self, "Choose a file", "",
612	wlist, None, QtGui.QFileDialog.DontUseNativeDialog)
613	if paths is None:
614	return
615
616	if isinstance(paths, QtCore.QStringList):
617	paths = [str(f) for f in paths]
618
619	if not isinstance(paths, list):
620	paths = [paths]
621
622	return paths
623
624	def readData(self, path):
625	"""
626	verbatim copy-paste from
627	sasgui.guiframe.local_perspectives.data_loader.data_loader.py
628	slightly modified for clarity
629	"""
630	message = ""
631	log_msg = ''
632	output = {}
633	any_error = False
634	data_error = False
635	error_message = ""
636	number_of_files = len(path)
637	self.communicator.progressBarUpdateSignal.emit(0.0)
638
639	for index, p_file in enumerate(path):
640	basename = os.path.basename(p_file)
641	_, extension = os.path.splitext(basename)
642	if extension.lower() in GuiUtils.EXTENSIONS:
643	any_error = True
644	log_msg = "Data Loader cannot "
645	log_msg += "load: %s\n" % str(p_file)
646	log_msg += """Please try to open that file from "open project" """
647	log_msg += """or "open analysis" menu\n"""
648	error_message = log_msg + "\n"
649	logging.info(log_msg)
650	continue
651
652	try:
653	message = "Loading Data... " + str(basename) + "\n"
654
655	# change this to signal notification in GuiManager
656	self.communicator.statusBarUpdateSignal.emit(message)
657
658	output_objects = self.loader.load(p_file)
659
660	# Some loaders return a list and some just a single Data1D object.
661	# Standardize.
662	if not isinstance(output_objects, list):
663	output_objects = [output_objects]
664
665	for item in output_objects:
666	# cast sascalc.dataloader.data_info.Data1D into
667	# sasgui.guiframe.dataFitting.Data1D
668	# TODO : Fix it
669	new_data = self.manager.create_gui_data(item, p_file)
670	output[new_data.id] = new_data
671
672	# Model update should be protected
673	self.mutex.lock()
674	self.updateModel(new_data, p_file)
675	self.model.reset()
676	QtGui.qApp.processEvents()
677	self.mutex.unlock()
678
679	if hasattr(item, 'errors'):
680	for error_data in item.errors:
681	data_error = True
682	message += "\tError: {0}\n".format(error_data)
683	else:
684
685	logging.error("Loader returned an invalid object:\n %s" % str(item))
686	data_error = True
687
688	except Exception as ex:
689	logging.error(sys.exc_value)
690
691	any_error = True
692	if any_error or error_message != "":
693	if error_message == "":
694	error = "Error: " + str(sys.exc_info()[1]) + "\n"
695	error += "while loading Data: \n%s\n" % str(basename)
696	error_message += "The data file you selected could not be loaded.\n"
697	error_message += "Make sure the content of your file"
698	error_message += " is properly formatted.\n\n"
699	error_message += "When contacting the SasView team, mention the"
700	error_message += " following:\n%s" % str(error)
701	elif data_error:
702	base_message = "Errors occurred while loading "
703	base_message += "{0}\n".format(basename)
704	base_message += "The data file loaded but with errors.\n"
705	error_message = base_message + error_message
706	else:
707	error_message += "%s\n" % str(p_file)
708
709	current_percentage = int(100.0* index/number_of_files)
710	self.communicator.progressBarUpdateSignal.emit(current_percentage)
711
712	if any_error or error_message:
713	logging.error(error_message)
714	status_bar_message = "Errors occurred while loading %s" % format(basename)
715	self.communicator.statusBarUpdateSignal.emit(status_bar_message)
716
717	else:
718	message = "Loading Data Complete! "
719	message += log_msg
720	# Notify the progress bar that the updates are over.
721	self.communicator.progressBarUpdateSignal.emit(-1)
722	self.communicator.statusBarUpdateSignal.emit(message)
723
724	return output, message
725
726	def getWlist(self):
727	"""
728	Wildcards of files we know the format of.
729	"""
730	# Display the Qt Load File module
731	cards = self.loader.get_wildcards()
732
733	# get rid of the wx remnant in wildcards
734	# TODO: modify sasview loader get_wildcards method, after merge,
735	# so this kludge can be avoided
736	new_cards = []
737	for item in cards:
738	new_cards.append(item[:item.find("\|")])
739	wlist = ';;'.join(new_cards)
740
741	return wlist
742
743	def selectData(self, index):
744	"""
745	Callback method for modifying the TreeView on Selection Options change
746	"""
747	if not isinstance(index, int):
748	msg = "Incorrect type passed to DataExplorer.selectData()"
749	raise AttributeError, msg
750
751	# Respond appropriately
752	if index == 0:
753	# Select All
754	for index in range(self.model.rowCount()):
755	item = self.model.item(index)
756	if item.isCheckable() and item.checkState() == QtCore.Qt.Unchecked:
757	item.setCheckState(QtCore.Qt.Checked)
758	elif index == 1:
759	# De-select All
760	for index in range(self.model.rowCount()):
761	item = self.model.item(index)
762	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked:
763	item.setCheckState(QtCore.Qt.Unchecked)
764
765	elif index == 2:
766	# Select All 1-D
767	for index in range(self.model.rowCount()):
768	item = self.model.item(index)
769	item.setCheckState(QtCore.Qt.Unchecked)
770
771	try:
772	is1D = isinstance(GuiUtils.dataFromItem(item), Data1D)
773	except AttributeError:
774	msg = "Bad structure of the data model."
775	raise RuntimeError, msg
776
777	if is1D:
778	item.setCheckState(QtCore.Qt.Checked)
779
780	elif index == 3:
781	# Unselect All 1-D
782	for index in range(self.model.rowCount()):
783	item = self.model.item(index)
784
785	try:
786	is1D = isinstance(GuiUtils.dataFromItem(item), Data1D)
787	except AttributeError:
788	msg = "Bad structure of the data model."
789	raise RuntimeError, msg
790
791	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked and is1D:
792	item.setCheckState(QtCore.Qt.Unchecked)
793
794	elif index == 4:
795	# Select All 2-D
796	for index in range(self.model.rowCount()):
797	item = self.model.item(index)
798	item.setCheckState(QtCore.Qt.Unchecked)
799	try:
800	is2D = isinstance(GuiUtils.dataFromItem(item), Data2D)
801	except AttributeError:
802	msg = "Bad structure of the data model."
803	raise RuntimeError, msg
804
805	if is2D:
806	item.setCheckState(QtCore.Qt.Checked)
807
808	elif index == 5:
809	# Unselect All 2-D
810	for index in range(self.model.rowCount()):
811	item = self.model.item(index)
812
813	try:
814	is2D = isinstance(GuiUtils.dataFromItem(item), Data2D)
815	except AttributeError:
816	msg = "Bad structure of the data model."
817	raise RuntimeError, msg
818
819	if item.isCheckable() and item.checkState() == QtCore.Qt.Checked and is2D:
820	item.setCheckState(QtCore.Qt.Unchecked)
821
822	else:
823	msg = "Incorrect value in the Selection Option"
824	# Change this to a proper logging action
825	raise Exception, msg
826
827	def contextMenu(self):
828	"""
829	Define actions and layout of the right click context menu
830	"""
831	# Create a custom menu based on actions defined in the UI file
832	self.context_menu = QtGui.QMenu(self)
833	self.context_menu.addAction(self.actionDataInfo)
834	self.context_menu.addAction(self.actionSaveAs)
835	self.context_menu.addAction(self.actionQuickPlot)
836	self.context_menu.addSeparator()
837	self.context_menu.addAction(self.actionQuick3DPlot)
838	self.context_menu.addAction(self.actionEditMask)
839
840	# Define the callbacks
841	self.actionDataInfo.triggered.connect(self.showDataInfo)
842	self.actionSaveAs.triggered.connect(self.saveDataAs)
843	self.actionQuickPlot.triggered.connect(self.quickDataPlot)
844	self.actionQuick3DPlot.triggered.connect(self.quickData3DPlot)
845	self.actionEditMask.triggered.connect(self.showEditDataMask)
846
847	def onCustomContextMenu(self, position):
848	"""
849	Show the right-click context menu in the data treeview
850	"""
851	index = self.current_view.indexAt(position)
852	proxy = self.current_view.model()
853	model = proxy.sourceModel()
854
855	if index.isValid():
856	model_item = model.itemFromIndex(proxy.mapToSource(index))
857	# Find the mapped index
858	orig_index = model_item.isCheckable()
859	if orig_index:
860	# Check the data to enable/disable actions
861	is_2D = isinstance(GuiUtils.dataFromItem(model_item), Data2D)
862	self.actionQuick3DPlot.setEnabled(is_2D)
863	self.actionEditMask.setEnabled(is_2D)
864	# Fire up the menu
865	self.context_menu.exec_(self.current_view.mapToGlobal(position))
866
867	def showDataInfo(self):
868	"""
869	Show a simple read-only text edit with data information.
870	"""
871	index = self.current_view.selectedIndexes()[0]
872	proxy = self.current_view.model()
873	model = proxy.sourceModel()
874	model_item = model.itemFromIndex(proxy.mapToSource(index))
875
876	data = GuiUtils.dataFromItem(model_item)
877	if isinstance(data, Data1D):
878	text_to_show = GuiUtils.retrieveData1d(data)
879	# Hardcoded sizes to enable full width rendering with default font
880	self.txt_widget.resize(420,600)
881	else:
882	text_to_show = GuiUtils.retrieveData2d(data)
883	# Hardcoded sizes to enable full width rendering with default font
884	self.txt_widget.resize(700,600)
885
886	self.txt_widget.setReadOnly(True)
887	self.txt_widget.setWindowFlags(QtCore.Qt.Window)
888	self.txt_widget.setWindowIcon(QtGui.QIcon(":/res/ball.ico"))
889	self.txt_widget.setWindowTitle("Data Info: %s" % data.filename)
890	self.txt_widget.clear()
891	self.txt_widget.insertPlainText(text_to_show)
892
893	self.txt_widget.show()
894	# Move the slider all the way up, if present
895	vertical_scroll_bar = self.txt_widget.verticalScrollBar()
896	vertical_scroll_bar.triggerAction(QtGui.QScrollBar.SliderToMinimum)
897
898	def saveDataAs(self):
899	"""
900	Save the data points as either txt or xml
901	"""
902	index = self.current_view.selectedIndexes()[0]
903	proxy = self.current_view.model()
904	model = proxy.sourceModel()
905	model_item = model.itemFromIndex(proxy.mapToSource(index))
906
907	data = GuiUtils.dataFromItem(model_item)
908	if isinstance(data, Data1D):
909	GuiUtils.saveData1D(data)
910	else:
911	GuiUtils.saveData2D(data)
912
913	def quickDataPlot(self):
914	"""
915	Frozen plot - display an image of the plot
916	"""
917	index = self.current_view.selectedIndexes()[0]
918	proxy = self.current_view.model()
919	model = proxy.sourceModel()
920	model_item = model.itemFromIndex(proxy.mapToSource(index))
921
922	data = GuiUtils.dataFromItem(model_item)
923
924	method_name = 'Plotter'
925	if isinstance(data, Data2D):
926	method_name='Plotter2D'
927
928	new_plot = globals()[method_name](self, quickplot=True)
929	new_plot.data = data
930	#new_plot.plot(marker='o')
931	new_plot.plot()
932
933	# Update the global plot counter
934	title = "Plot " + data.name
935	new_plot.setWindowTitle(title)
936
937	# Show the plot
938	new_plot.show()
939
940	def quickData3DPlot(self):
941	"""
942	Slowish 3D plot
943	"""
944	index = self.current_view.selectedIndexes()[0]
945	proxy = self.current_view.model()
946	model = proxy.sourceModel()
947	model_item = model.itemFromIndex(proxy.mapToSource(index))
948
949	data = GuiUtils.dataFromItem(model_item)
950
951	new_plot = Plotter2D(self, quickplot=True, dimension=3)
952	new_plot.data = data
953	new_plot.plot()
954
955	# Update the global plot counter
956	title = "Plot " + data.name
957	new_plot.setWindowTitle(title)
958
959	# Show the plot
960	new_plot.show()
961
962	def showEditDataMask(self):
963	"""
964	Mask Editor for 2D plots
965	"""
966	index = self.current_view.selectedIndexes()[0]
967	proxy = self.current_view.model()
968	model = proxy.sourceModel()
969	model_item = model.itemFromIndex(proxy.mapToSource(index))
970
971	data = GuiUtils.dataFromItem(model_item)
972
973	mask_editor = MaskEditor(self, data)
974	# Modal dialog here.
975	mask_editor.exec_()
976
977	def loadComplete(self, output):
978	"""
979	Post message to status bar and update the data manager
980	"""
981	assert isinstance(output, tuple)
982
983	# Reset the model so the view gets updated.
984	self.model.reset()
985	self.communicator.progressBarUpdateSignal.emit(-1)
986
987	output_data = output[0]
988	message = output[1]
989	# Notify the manager of the new data available
990	self.communicator.statusBarUpdateSignal.emit(message)
991	self.communicator.fileDataReceivedSignal.emit(output_data)
992	self.manager.add_data(data_list=output_data)
993
994	def updateModel(self, data, p_file):
995	"""
996	Add data and Info fields to the model item
997	"""
998	# Structure of the model
999	# checkbox + basename
1000	# \|-------> Data.D object
1001	# \|-------> Info
1002	# \|----> Title:
1003	# \|----> Run:
1004	# \|----> Type:
1005	# \|----> Path:
1006	# \|----> Process
1007	# \|-----> process[0].name
1008	# \|-------> THEORIES
1009
1010	# Top-level item: checkbox with label
1011	checkbox_item = QtGui.QStandardItem(True)
1012	checkbox_item.setCheckable(True)
1013	checkbox_item.setCheckState(QtCore.Qt.Checked)
1014	checkbox_item.setText(os.path.basename(p_file))
1015
1016	# Add the actual Data1D/Data2D object
1017	object_item = QtGui.QStandardItem()
1018	object_item.setData(QtCore.QVariant(data))
1019
1020	checkbox_item.setChild(0, object_item)
1021
1022	# Add rows for display in the view
1023	info_item = GuiUtils.infoFromData(data)
1024
1025	# Set info_item as the first child
1026	checkbox_item.setChild(1, info_item)
1027
1028	# Caption for the theories
1029	checkbox_item.setChild(2, QtGui.QStandardItem("THEORIES"))
1030
1031	# New row in the model
1032	self.model.appendRow(checkbox_item)
1033
1034	def updateModelFromPerspective(self, model_item):
1035	"""
1036	Receive an update model item from a perspective
1037	Make sure it is valid and if so, replace it in the model
1038	"""
1039	# Assert the correct type
1040	if not isinstance(model_item, QtGui.QStandardItem):
1041	msg = "Wrong data type returned from calculations."
1042	raise AttributeError, msg
1043
1044	# TODO: Assert other properties
1045
1046	# Reset the view
1047	self.model.reset()
1048	# Pass acting as a debugger anchor
1049	pass
1050
1051	def updateTheoryFromPerspective(self, model_item):
1052	"""
1053	Receive an update theory item from a perspective
1054	Make sure it is valid and if so, replace/add in the model
1055	"""
1056	# Assert the correct type
1057	if not isinstance(model_item, QtGui.QStandardItem):
1058	msg = "Wrong data type returned from calculations."
1059	raise AttributeError, msg
1060
1061	# Check if there are any other items for this tab
1062	# If so, delete them
1063	# TODO: fix this to resemble GuiUtils.updateModelItemWithPlot
1064	#
1065	current_tab_name = model_item.text()[:2]
1066	for current_index in xrange(self.theory_model.rowCount()):
1067	if current_tab_name in self.theory_model.item(current_index).text():
1068	self.theory_model.removeRow(current_index)
1069	break
1070
1071	# Reset the view
1072	self.model.reset()
1073
1074	# Reset the view
1075	self.theory_model.appendRow(model_item)
1076
1077	# Pass acting as a debugger anchor
1078	pass
1079
1080
1081	if __name__ == "__main__":
1082	app = QtGui.QApplication([])
1083	dlg = DataExplorerWindow()
1084	dlg.show()
1085	sys.exit(app.exec_())

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SasView

source: sasview/src/sas/qtgui/MainWindow/DataExplorer.py @ 6b43c58

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