Plotter.py @ 42787fb

ESS_GUIESS_GUI_DocsESS_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 42787fb was 42787fb, checked in by Piotr Rozyczko <rozyczko@…>, 6 years ago
Fixing issues with DataOperationUtility? calculator
Property mode set to `100644`
File size: 25.2 KB

Rev	Line
[4992ff2]	1	from PyQt5 import QtCore
	2	from PyQt5 import QtGui
	3	from PyQt5 import QtWidgets
	4
[aadf0af1]	5	import functools
	6	import copy
[8cb6cd6]	7	import matplotlib.pyplot as plt
[9290b1a]	8	from matplotlib.font_manager import FontProperties
[dc5ef15]	9	from sas.qtgui.Plotting.PlotterData import Data1D
[83eb5208]	10	from sas.qtgui.Plotting.PlotterBase import PlotterBase
	11	from sas.qtgui.Plotting.AddText import AddText
	12	from sas.qtgui.Plotting.SetGraphRange import SetGraphRange
	13	from sas.qtgui.Plotting.LinearFit import LinearFit
	14	from sas.qtgui.Plotting.PlotProperties import PlotProperties
[bb57068]	15	from sas.qtgui.Plotting.ScaleProperties import ScaleProperties
[dc5ef15]	16
	17	import sas.qtgui.Utilities.GuiUtils as GuiUtils
[83eb5208]	18	import sas.qtgui.Plotting.PlotUtilities as PlotUtilities
[8cb6cd6]	19
[416fa8f]	20	class PlotterWidget(PlotterBase):
[c4e5400]	21	"""
	22	1D Plot widget for use with a QDialog
[fecfe28]	23	"""
[416fa8f]	24	def __init__(self, parent=None, manager=None, quickplot=False):
	25	super(PlotterWidget, self).__init__(parent, manager=manager, quickplot=quickplot)
[570a58f9]	26
[27313b7]	27	self.parent = parent
[8cb6cd6]	28
[aadf0af1]	29	# Dictionary of {plot_id:Data1d}
	30	self.plot_dict = {}
	31
[fed94a2]	32	# Window for text add
	33	self.addText = AddText(self)
[aadf0af1]	34
[fed94a2]	35	# Log-ness of the axes
[570a58f9]	36	self.xLogLabel = "log10(x)"
	37	self.yLogLabel = "log10(y)"
	38
	39	# Data container for the linear fit
[fed94a2]	40	self.fit_result = Data1D(x=[], y=[], dy=None)
	41	self.fit_result.symbol = 13
	42	self.fit_result.name = "Fit"
[570a58f9]	43
[31c5b58]	44	@property
	45	def data(self):
	46	return self._data
	47
	48	@data.setter
	49	def data(self, value):
[8cb6cd6]	50	""" data setter """
[31c5b58]	51	self._data = value
[cb4d219]	52	if value._xunit:
	53	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	54	else:
	55	self.xLabel = "%s"%(value._xaxis)
	56	if value._yunit:
	57	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
	58	else:
	59	self.yLabel = "%s"%(value._yaxis)
	60
	61	if value.scale == 'linear' or value.isSesans:
[749b715]	62	self.xscale = 'linear'
	63	self.yscale = 'linear'
[aadf0af1]	64	self.title(title=value.name)
[8cb6cd6]	65
[f0bb711]	66	def plot(self, data=None, color=None, marker=None, hide_error=False):
[8cb6cd6]	67	"""
[aadf0af1]	68	Add a new plot of self._data to the chart.
[8cb6cd6]	69	"""
[9290b1a]	70	# Data1D
	71	if isinstance(data, Data1D):
	72	self.data = data
	73	assert(self._data)
	74
[87cc73a]	75	is_fit = (self.data.id=="fit")
[570a58f9]	76
[bb57068]	77	# make sure we have some function to operate on
	78	if self.data.xtransform is None:
	79	self.data.xtransform = 'log10(x)'
	80	if self.data.ytransform is None:
	81	self.data.ytransform = 'log10(y)'
	82
[f182f93]	83	# Transform data if required.
[bb57068]	84	if self.data.xtransform is not None or self.data.ytransform is not None:
	85	_, _, xscale, yscale = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	86	if xscale != 'log':
	87	self.xscale = xscale
	88	if yscale != 'log':
	89	self.yscale = yscale
	90
	91	# Redefine the Scale properties dialog
	92	self.properties = ScaleProperties(self,
	93	init_scale_x=self.data.xtransform,
	94	init_scale_y=self.data.ytransform)
[f182f93]	95
[87cc73a]	96	# Shortcuts
[ef01be4]	97	ax = self.ax
[87cc73a]	98	x = self._data.view.x
	99	y = self._data.view.y
	100
	101	# Marker symbol. Passed marker is one of matplotlib.markers characters
	102	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	103	if marker is None:
	104	marker = self.data.symbol
[6fd4e36]	105	# Try name first
	106	try:
[cb4d219]	107	marker = dict(PlotUtilities.SHAPES)[marker]
[6fd4e36]	108	except KeyError:
[8f83719f]	109	marker = list(PlotUtilities.SHAPES.values())[marker]
[87cc73a]	110
[6fd4e36]	111	assert marker is not None
[87cc73a]	112	# Plot name
[b789967]	113	if self.data.title:
	114	self.title(title=self.data.title)
	115	else:
	116	self.title(title=self.data.name)
[87cc73a]	117
	118	# Error marker toggle
	119	if hide_error is None:
	120	hide_error = self.data.hide_error
	121
	122	# Plot color
	123	if color is None:
	124	color = self.data.custom_color
	125
	126	color = PlotUtilities.getValidColor(color)
	127
	128	markersize = self._data.markersize
	129
[239214f]	130	# Draw non-standard markers
	131	l_width = markersize * 0.4
	132	if marker == '-' or marker == '--':
	133	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	134	linestyle=marker, label=self._title, zorder=10)[0]
	135
	136	elif marker == 'vline':
	137	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	138	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	139	linestyle='-', label=self._title, lw=l_width, zorder=1)
	140
	141	elif marker == 'step':
	142	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	143	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	144
[c4e5400]	145	else:
[87cc73a]	146	# plot data with/without errorbars
	147	if hide_error:
	148	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	149	linestyle='', label=self._title, picker=True)
	150	else:
	151	line = ax.errorbar(x, y,
	152	yerr=self._data.view.dy, xerr=None,
	153	capsize=2, linestyle='',
	154	barsabove=False,
	155	color=color,
	156	marker=marker,
	157	markersize=markersize,
	158	lolims=False, uplims=False,
	159	xlolims=False, xuplims=False,
	160	label=self._title,
	161	picker=True)
[8cb6cd6]	162
[aadf0af1]	163	# Update the list of data sets (plots) in chart
	164	self.plot_dict[self._data.id] = self.data
	165
[8cb6cd6]	166	# Now add the legend with some customizations.
[f0bb711]	167
[42787fb]	168	if self.showLegend:
	169	self.legend = ax.legend(loc='upper right', shadow=True)
	170	if self.legend:
	171	self.legend.set_picker(True)
[8cb6cd6]	172
[6d05e1d]	173	# Current labels for axes
[570a58f9]	174	if self.y_label and not is_fit:
	175	ax.set_ylabel(self.y_label)
	176	if self.x_label and not is_fit:
	177	ax.set_xlabel(self.x_label)
[6d05e1d]	178
	179	# Include scaling (log vs. linear)
	180	ax.set_xscale(self.xscale)
[3b7b218]	181	ax.set_yscale(self.yscale)
[8cb6cd6]	182
[257bd57]	183	# define the ranges
	184	self.setRange = SetGraphRange(parent=self,
	185	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	186
[8cb6cd6]	187	# refresh canvas
[fbfc488]	188	self.canvas.draw_idle()
[8cb6cd6]	189
[aadf0af1]	190	def createContextMenu(self):
[c4e5400]	191	"""
	192	Define common context menu and associated actions for the MPL widget
	193	"""
	194	self.defaultContextMenu()
	195
[aadf0af1]	196	# Separate plots
	197	self.addPlotsToContextMenu()
	198
[27313b7]	199	# Additional menu items
	200	self.contextMenu.addSeparator()
	201	self.actionAddText = self.contextMenu.addAction("Add Text")
	202	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	203	self.contextMenu.addSeparator()
	204	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	205	self.contextMenu.addSeparator()
	206	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	207	self.actionResetGraphRange =\
	208	self.contextMenu.addAction("Reset Graph Range")
	209	# Add the title change for dialogs
[aadf0af1]	210	#if self.parent:
	211	self.contextMenu.addSeparator()
	212	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	213
	214	# Define the callbacks
	215	self.actionAddText.triggered.connect(self.onAddText)
	216	self.actionRemoveText.triggered.connect(self.onRemoveText)
	217	self.actionChangeScale.triggered.connect(self.onScaleChange)
	218	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	219	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	220	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	221
[aadf0af1]	222	def addPlotsToContextMenu(self):
	223	"""
	224	Adds operations on all plotted sets of data to the context menu
	225	"""
[b3e8629]	226	for id in list(self.plot_dict.keys()):
[aadf0af1]	227	plot = self.plot_dict[id]
[b789967]	228
	229	name = plot.name if plot.name else plot.title
[aadf0af1]	230	plot_menu = self.contextMenu.addMenu('&%s' % name)
	231
	232	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	233	self.actionDataInfo.triggered.connect(
	234	functools.partial(self.onDataInfo, plot))
	235
	236	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	237	self.actionSavePointsAsFile.triggered.connect(
	238	functools.partial(self.onSavePoints, plot))
	239	plot_menu.addSeparator()
	240
	241	if plot.id != 'fit':
	242	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	243	self.actionLinearFit.triggered.connect(
	244	functools.partial(self.onLinearFit, id))
[aadf0af1]	245	plot_menu.addSeparator()
	246
	247	self.actionRemovePlot = plot_menu.addAction("Remove")
	248	self.actionRemovePlot.triggered.connect(
	249	functools.partial(self.onRemovePlot, id))
	250
	251	if not plot.is_data:
	252	self.actionFreeze = plot_menu.addAction('&Freeze')
	253	self.actionFreeze.triggered.connect(
	254	functools.partial(self.onFreeze, id))
	255	plot_menu.addSeparator()
	256
	257	if plot.is_data:
	258	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	259	if plot.dy is not None and plot.dy != []:
	260	if plot.hide_error:
	261	self.actionHideError.setText('Show Error Bar')
	262	else:
	263	self.actionHideError.setEnabled(False)
	264	self.actionHideError.triggered.connect(
	265	functools.partial(self.onToggleHideError, id))
	266	plot_menu.addSeparator()
	267
	268	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	269	self.actionModifyPlot.triggered.connect(
	270	functools.partial(self.onModifyPlot, id))
[aadf0af1]	271
	272	def createContextMenuQuick(self):
[6d05e1d]	273	"""
	274	Define context menu and associated actions for the quickplot MPL widget
	275	"""
[c4e5400]	276	# Default actions
	277	self.defaultContextMenu()
	278
	279	# Additional actions
[6d05e1d]	280	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	281	self.contextMenu.addSeparator()
	282	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	283
	284	# Define the callbacks
	285	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	286	self.actionChangeScale.triggered.connect(self.onScaleChange)
	287
	288	def onScaleChange(self):
	289	"""
	290	Show a dialog allowing axes rescaling
	291	"""
[4992ff2]	292	if self.properties.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	293	self.xLogLabel, self.yLogLabel = self.properties.getValues()
[bb57068]	294	self.data.xtransform = self.xLogLabel
	295	self.data.ytransform = self.yLogLabel
[570a58f9]	296	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	297
[27313b7]	298	def onAddText(self):
	299	"""
	300	Show a dialog allowing adding custom text to the chart
	301	"""
[eb1a386]	302	if self.addText.exec_() != QtWidgets.QDialog.Accepted:
	303	return
	304
	305	# Retrieve the new text, its font and color
	306	extra_text = self.addText.text()
	307	extra_font = self.addText.font()
	308	extra_color = self.addText.color()
	309
	310	# Place the text on the screen at the click location
	311	pos_x = self.x_click
	312	pos_y = self.y_click
	313
	314	# Map QFont onto MPL font
	315	mpl_font = FontProperties()
	316	mpl_font.set_size(int(extra_font.pointSize()))
	317	mpl_font.set_family(str(extra_font.family()))
	318	mpl_font.set_weight(int(extra_font.weight()))
	319	# MPL style names
	320	styles = ['normal', 'italic', 'oblique']
	321	# QFont::Style maps directly onto the above
	322	try:
	323	mpl_font.set_style(styles[extra_font.style()])
	324	except:
	325	pass
	326
	327	if len(extra_text) > 0:
	328	new_text = self.ax.text(pos_x,
	329	pos_y,
	330	extra_text,
	331	color=extra_color,
	332	fontproperties=mpl_font)
	333
	334	# Update the list of annotations
	335	self.textList.append(new_text)
	336	self.canvas.draw()
[27313b7]	337
	338	def onRemoveText(self):
	339	"""
[9290b1a]	340	Remove the most recently added text
[27313b7]	341	"""
[d3ca363]	342	num_text = len(self.textList)
	343	if num_text < 1:
	344	return
	345	txt = self.textList[num_text - 1]
	346	text_remove = txt.get_text()
[eb1a386]	347	try:
	348	txt.remove()
	349	except ValueError:
	350	# Text got already deleted somehow
	351	pass
[d3ca363]	352	self.textList.remove(txt)
	353
	354	self.canvas.draw_idle()
[27313b7]	355
	356	def onSetGraphRange(self):
	357	"""
	358	Show a dialog allowing setting the chart ranges
	359	"""
[d3ca363]	360	# min and max of data
[4992ff2]	361	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	362	x_range = self.setRange.xrange()
	363	y_range = self.setRange.yrange()
	364	if x_range is not None and y_range is not None:
	365	self.ax.set_xlim(x_range)
	366	self.ax.set_ylim(y_range)
	367	self.canvas.draw_idle()
[27313b7]	368
	369	def onResetGraphRange(self):
	370	"""
[d3ca363]	371	Resets the chart X and Y ranges to their original values
[27313b7]	372	"""
[d3ca363]	373	x_range = (self.data.x.min(), self.data.x.max())
	374	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	375	if x_range is not None and y_range is not None:
	376	self.ax.set_xlim(x_range)
	377	self.ax.set_ylim(y_range)
	378	self.canvas.draw_idle()
[27313b7]	379
[570a58f9]	380	def onLinearFit(self, id):
[aadf0af1]	381	"""
	382	Creates and displays a simple linear fit for the selected plot
	383	"""
[570a58f9]	384	selected_plot = self.plot_dict[id]
	385
	386	maxrange = (min(selected_plot.x), max(selected_plot.x))
	387	fitrange = self.ax.get_xlim()
	388
	389	fit_dialog = LinearFit(parent=self,
	390	data=selected_plot,
	391	max_range=maxrange,
	392	fit_range=fitrange,
	393	xlabel=self.xLogLabel,
	394	ylabel=self.yLogLabel)
[7969b9c]	395	fit_dialog.updatePlot.connect(self.onFitDisplay)
[4992ff2]	396	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	397	return
[aadf0af1]	398
[87cc73a]	399	def replacePlot(self, id, new_plot):
	400	"""
	401	Remove plot 'id' and add 'new_plot' to the chart.
	402	This effectlvely refreshes the chart with changes to one of its plots
	403	"""
	404	self.removePlot(id)
	405	self.plot(data=new_plot)
	406
[aadf0af1]	407	def onRemovePlot(self, id):
	408	"""
[570a58f9]	409	Responds to the plot delete action
	410	"""
	411	self.removePlot(id)
	412
	413	if len(self.plot_dict) == 0:
	414	# last plot: graph is empty must be the panel must be destroyed
	415	self.parent.close()
	416
	417	def removePlot(self, id):
	418	"""
[aadf0af1]	419	Deletes the selected plot from the chart
	420	"""
[b3e8629]	421	if id not in list(self.plot_dict.keys()):
[570a58f9]	422	return
	423
[aadf0af1]	424	selected_plot = self.plot_dict[id]
	425
	426	plot_dict = copy.deepcopy(self.plot_dict)
	427
[b46f285]	428	# Labels might have been changed
	429	xl = self.ax.xaxis.label.get_text()
	430	yl = self.ax.yaxis.label.get_text()
	431
[aadf0af1]	432	self.plot_dict = {}
	433
	434	plt.cla()
	435	self.ax.cla()
	436
	437	for ids in plot_dict:
	438	if ids != id:
[b46f285]	439	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	440
	441	# Reset the labels
	442	self.ax.set_xlabel(xl)
	443	self.ax.set_ylabel(yl)
	444	self.canvas.draw()
[aadf0af1]	445
	446	def onFreeze(self, id):
	447	"""
	448	Freezes the selected plot to a separate chart
	449	"""
	450	plot = self.plot_dict[id]
	451	self.manager.add_data(data_list=[plot])
	452
[87cc73a]	453	def onModifyPlot(self, id):
[aadf0af1]	454	"""
	455	Allows for MPL modifications to the selected plot
	456	"""
[87cc73a]	457	selected_plot = self.plot_dict[id]
	458
	459	# Old style color - single integer for enum color
	460	# New style color - #hhhhhh
	461	color = selected_plot.custom_color
	462	# marker symbol and size
	463	marker = selected_plot.symbol
	464	marker_size = selected_plot.markersize
	465	# plot name
	466	legend = selected_plot.title
	467
	468	plotPropertiesWidget = PlotProperties(self,
	469	color=color,
	470	marker=marker,
	471	marker_size=marker_size,
	472	legend=legend)
[4992ff2]	473	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	474	# Update Data1d
[0f3c22d]	475	selected_plot.markersize = plotPropertiesWidget.markersize()
	476	selected_plot.custom_color = plotPropertiesWidget.color()
	477	selected_plot.symbol = plotPropertiesWidget.marker()
	478	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	479
	480	# Redraw the plot
	481	self.replacePlot(id, selected_plot)
[aadf0af1]	482
	483	def onToggleHideError(self, id):
	484	"""
	485	Toggles hide error/show error menu item
	486	"""
	487	selected_plot = self.plot_dict[id]
	488	current = selected_plot.hide_error
	489
	490	# Flip the flag
	491	selected_plot.hide_error = not current
	492
	493	plot_dict = copy.deepcopy(self.plot_dict)
	494	self.plot_dict = {}
	495
	496	# Clean the canvas
	497	plt.cla()
	498	self.ax.cla()
	499
	500	# Recreate the plots but reverse the error flag for the current
	501	for ids in plot_dict:
	502	if ids == id:
	503	self.plot(data=plot_dict[ids], hide_error=(not current))
	504	else:
	505	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	506
[6d05e1d]	507	def xyTransform(self, xLabel="", yLabel=""):
	508	"""
	509	Transforms x and y in View and set the scale
	510	"""
[570a58f9]	511	# Transform all the plots on the chart
[b3e8629]	512	for id in list(self.plot_dict.keys()):
[570a58f9]	513	current_plot = self.plot_dict[id]
	514	if current_plot.id == "fit":
	515	self.removePlot(id)
	516	continue
[fed94a2]	517
[570a58f9]	518	new_xlabel, new_ylabel, xscale, yscale =\
	519	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	520	self.xscale = xscale
	521	self.yscale = yscale
[b46f285]	522
[570a58f9]	523	# Plot the updated chart
	524	self.removePlot(id)
[b46f285]	525
	526	# This assignment will wrap the label in Latex "$"
	527	self.xLabel = new_xlabel
	528	self.yLabel = new_ylabel
[a66ff280]	529	# Directly overwrite the data to avoid label reassignment
	530	self._data = current_plot
[87cc73a]	531	self.plot()
[570a58f9]	532
	533	pass # debug hook
	534
[fed94a2]	535	def onFitDisplay(self, fit_data):
	536	"""
	537	Add a linear fitting line to the chart
	538	"""
	539	# Create new data structure with fitting result
	540	tempx = fit_data[0]
	541	tempy = fit_data[1]
	542	self.fit_result.x = []
	543	self.fit_result.y = []
	544	self.fit_result.x = tempx
	545	self.fit_result.y = tempy
	546	self.fit_result.dx = None
	547	self.fit_result.dy = None
	548
	549	#Remove another Fit, if exists
	550	self.removePlot("fit")
	551
	552	self.fit_result.reset_view()
	553	#self.offset_graph()
	554
	555	# Set plot properties
	556	self.fit_result.id = 'fit'
	557	self.fit_result.title = 'Fit'
	558	self.fit_result.name = 'Fit'
	559
	560	# Plot the line
[87cc73a]	561	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	562
[3bdbfcc]	563	def onMplMouseDown(self, event):
	564	"""
	565	Left button down and ready to drag
	566	"""
	567	# Check that the LEFT button was pressed
[0268aed]	568	if event.button != 1:
	569	return
	570
	571	self.leftdown = True
	572	for text in self.textList:
	573	if text.contains(event)[0]: # If user has clicked on text
	574	self.selectedText = text
	575	return
	576	if event.inaxes is None:
	577	return
	578	try:
	579	self.x_click = float(event.xdata) # / size_x
	580	self.y_click = float(event.ydata) # / size_y
	581	except:
	582	self.position = None
[3bdbfcc]	583
	584	def onMplMouseUp(self, event):
	585	"""
	586	Set the data coordinates of the click
	587	"""
	588	self.x_click = event.xdata
	589	self.y_click = event.ydata
	590
	591	# Check that the LEFT button was released
	592	if event.button == 1:
	593	self.leftdown = False
	594	self.selectedText = None
	595
	596	#release the legend
	597	if self.gotLegend == 1:
	598	self.gotLegend = 0
	599
	600	def onMplMouseMotion(self, event):
	601	"""
	602	Check if the left button is press and the mouse in moving.
	603	Compute delta for x and y coordinates and then perform the drag
	604	"""
	605	if self.gotLegend == 1 and self.leftdown:
	606	self.onLegendMotion(event)
	607	return
	608
[0268aed]	609	#if self.leftdown and self.selectedText is not None:
[9f25bce]	610	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	611	return
[0268aed]	612	# User has clicked on text and is dragging
[9f25bce]	613	if event.inaxes is None:
[0268aed]	614	# User has dragged outside of axes
	615	self.selectedText = None
	616	else:
	617	# Only move text if mouse is within axes
	618	self.selectedText.set_position((event.xdata, event.ydata))
	619	self.canvas.draw_idle()
	620	return
[3bdbfcc]	621
	622	def onMplPick(self, event):
	623	"""
	624	On pick legend
	625	"""
	626	legend = self.legend
[0268aed]	627	if event.artist != legend:
	628	return
	629	# Get the box of the legend.
	630	bbox = self.legend.get_window_extent()
	631	# Get mouse coordinates at time of pick.
	632	self.mouse_x = event.mouseevent.x
	633	self.mouse_y = event.mouseevent.y
	634	# Get legend coordinates at time of pick.
	635	self.legend_x = bbox.xmin
	636	self.legend_y = bbox.ymin
	637	# Indicate we picked up the legend.
	638	self.gotLegend = 1
	639
	640	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	641
	642	def onLegendMotion(self, event):
	643	"""
	644	On legend in motion
	645	"""
	646	ax = event.inaxes
[cee5c78]	647	if ax is None:
[3bdbfcc]	648	return
	649	# Event occurred inside a plotting area
	650	lo_x, hi_x = ax.get_xlim()
	651	lo_y, hi_y = ax.get_ylim()
	652	# How much the mouse moved.
	653	x = mouse_diff_x = self.mouse_x - event.x
	654	y = mouse_diff_y = self.mouse_y - event.y
	655	# Put back inside
	656	if x < lo_x:
	657	x = lo_x
	658	if x > hi_x:
	659	x = hi_x
	660	if y < lo_y:
	661	y = lo_y
	662	if y > hi_y:
	663	y = hi_y
	664	# Move the legend from its previous location by that same amount
	665	loc_in_canvas = self.legend_x - mouse_diff_x, \
	666	self.legend_y - mouse_diff_y
	667	# Transform into legend coordinate system
	668	trans_axes = self.legend.parent.transAxes.inverted()
	669	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	670	self.legend_pos_loc = tuple(loc_in_norm_axes)
	671	self.legend._loc = self.legend_pos_loc
	672	# self.canvas.draw()
	673	self.canvas.draw_idle()
	674
	675	def onMplWheel(self, event):
	676	"""
	677	Process mouse wheel as zoom events
	678	"""
	679	ax = event.inaxes
	680	step = event.step
	681
[cee5c78]	682	if ax is not None:
[3bdbfcc]	683	# Event occurred inside a plotting area
	684	lo, hi = ax.get_xlim()
	685	lo, hi = PlotUtilities.rescale(lo, hi, step,
	686	pt=event.xdata, scale=ax.get_xscale())
	687	if not self.xscale == 'log' or lo > 0:
	688	self._scale_xlo = lo
	689	self._scale_xhi = hi
	690	ax.set_xlim((lo, hi))
	691
	692	lo, hi = ax.get_ylim()
	693	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	694	scale=ax.get_yscale())
	695	if not self.yscale == 'log' or lo > 0:
	696	self._scale_ylo = lo
	697	self._scale_yhi = hi
	698	ax.set_ylim((lo, hi))
	699	else:
	700	# Check if zoom happens in the axes
	701	xdata, ydata = None, None
	702	x, y = event.x, event.y
	703
	704	for ax in self.axes:
	705	insidex, _ = ax.xaxis.contains(event)
	706	if insidex:
	707	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	708	insidey, _ = ax.yaxis.contains(event)
	709	if insidey:
	710	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	711	if xdata is not None:
	712	lo, hi = ax.get_xlim()
	713	lo, hi = PlotUtilities.rescale(lo, hi, step,
	714	bal=xdata, scale=ax.get_xscale())
	715	if not self.xscale == 'log' or lo > 0:
	716	self._scale_xlo = lo
	717	self._scale_xhi = hi
	718	ax.set_xlim((lo, hi))
	719	if ydata is not None:
	720	lo, hi = ax.get_ylim()
	721	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	722	scale=ax.get_yscale())
	723	if not self.yscale == 'log' or lo > 0:
	724	self._scale_ylo = lo
	725	self._scale_yhi = hi
	726	ax.set_ylim((lo, hi))
	727	self.canvas.draw_idle()
	728
[c4e5400]	729
[4992ff2]	730	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	731	def __init__(self, parent=None, quickplot=False):
	732
[4992ff2]	733	QtWidgets.QDialog.__init__(self)
[aadf0af1]	734	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	735	icon = QtGui.QIcon()
	736	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	737	self.setWindowIcon(icon)
	738
[416fa8f]	739

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ 42787fb

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