Plotter.py @ 4992ff2

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 4992ff2 was 4992ff2, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Initial, in-progress version. Not really working atm. SASVIEW-787
Property mode set to `100644`
File size: 24.4 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
[dc5ef15]	15
	16	import sas.qtgui.Utilities.GuiUtils as GuiUtils
[83eb5208]	17	import sas.qtgui.Plotting.PlotUtilities as PlotUtilities
[8cb6cd6]	18
[416fa8f]	19	class PlotterWidget(PlotterBase):
[c4e5400]	20	"""
	21	1D Plot widget for use with a QDialog
[fecfe28]	22	"""
[4992ff2]	23	updatePlot = QtCore.pyqtSignal(tuple)
[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
	44	# Add a slot for receiving update signal from LinearFit
[fed94a2]	45	# NEW style signals
[4992ff2]	46	self.updatePlot.connect(self.onFitDisplay)
[fed94a2]	47	# OLD style signals
[4992ff2]	48	# QtCore.QObject.connect(self, QtCore.SIGNAL('updatePlot'), self.onFitDisplay)
[570a58f9]	49
[31c5b58]	50	@property
	51	def data(self):
	52	return self._data
	53
	54	@data.setter
	55	def data(self, value):
[8cb6cd6]	56	""" data setter """
[31c5b58]	57	self._data = value
[6d05e1d]	58	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	59	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
[749b715]	60	if value.isSesans:
	61	self.xscale = 'linear'
	62	self.yscale = 'linear'
[aadf0af1]	63	self.title(title=value.name)
[8cb6cd6]	64
[f0bb711]	65	def plot(self, data=None, color=None, marker=None, hide_error=False):
[8cb6cd6]	66	"""
[aadf0af1]	67	Add a new plot of self._data to the chart.
[8cb6cd6]	68	"""
[9290b1a]	69	# Data1D
	70	if isinstance(data, Data1D):
	71	self.data = data
	72	assert(self._data)
	73
[87cc73a]	74	is_fit = (self.data.id=="fit")
[570a58f9]	75
[f182f93]	76	# Transform data if required.
	77	# TODO: it properly!
	78	#if data.xtransform is not None or data.ytransform is not None:
	79	# a, b, c, d = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	80
[87cc73a]	81	# Shortcuts
[ef01be4]	82	ax = self.ax
[87cc73a]	83	x = self._data.view.x
	84	y = self._data.view.y
	85
	86	# Marker symbol. Passed marker is one of matplotlib.markers characters
	87	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	88	if marker is None:
	89	marker = self.data.symbol
[6fd4e36]	90	# Try name first
	91	try:
	92	marker = PlotUtilities.SHAPES[marker]
	93	except KeyError:
[b3e8629]	94	marker = list(PlotUtilities.SHAPES.values())[marker]
[87cc73a]	95
[6fd4e36]	96	assert marker is not None
[87cc73a]	97	# Plot name
[b789967]	98	if self.data.title:
	99	self.title(title=self.data.title)
	100	else:
	101	self.title(title=self.data.name)
[87cc73a]	102
	103	# Error marker toggle
	104	if hide_error is None:
	105	hide_error = self.data.hide_error
	106
	107	# Plot color
	108	if color is None:
	109	color = self.data.custom_color
	110
	111	color = PlotUtilities.getValidColor(color)
	112
	113	markersize = self._data.markersize
	114
[239214f]	115	# Draw non-standard markers
	116	l_width = markersize * 0.4
	117	if marker == '-' or marker == '--':
	118	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	119	linestyle=marker, label=self._title, zorder=10)[0]
	120
	121	elif marker == 'vline':
	122	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	123	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	124	linestyle='-', label=self._title, lw=l_width, zorder=1)
	125
	126	elif marker == 'step':
	127	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	128	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	129
[c4e5400]	130	else:
[87cc73a]	131	# plot data with/without errorbars
	132	if hide_error:
	133	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	134	linestyle='', label=self._title, picker=True)
	135	else:
	136	line = ax.errorbar(x, y,
	137	yerr=self._data.view.dy, xerr=None,
	138	capsize=2, linestyle='',
	139	barsabove=False,
	140	color=color,
	141	marker=marker,
	142	markersize=markersize,
	143	lolims=False, uplims=False,
	144	xlolims=False, xuplims=False,
	145	label=self._title,
	146	picker=True)
[8cb6cd6]	147
[aadf0af1]	148	# Update the list of data sets (plots) in chart
	149	self.plot_dict[self._data.id] = self.data
	150
[8cb6cd6]	151	# Now add the legend with some customizations.
[f0bb711]	152
	153	self.legend = ax.legend(loc='upper right', shadow=True)
	154	if self.legend:
	155	self.legend.set_picker(True)
[8cb6cd6]	156
[6d05e1d]	157	# Current labels for axes
[570a58f9]	158	if self.y_label and not is_fit:
	159	ax.set_ylabel(self.y_label)
	160	if self.x_label and not is_fit:
	161	ax.set_xlabel(self.x_label)
[6d05e1d]	162
	163	# Include scaling (log vs. linear)
	164	ax.set_xscale(self.xscale)
[3b7b218]	165	ax.set_yscale(self.yscale)
[8cb6cd6]	166
[257bd57]	167	# define the ranges
	168	self.setRange = SetGraphRange(parent=self,
	169	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	170
[8cb6cd6]	171	# refresh canvas
	172	self.canvas.draw()
	173
[aadf0af1]	174	def createContextMenu(self):
[c4e5400]	175	"""
	176	Define common context menu and associated actions for the MPL widget
	177	"""
	178	self.defaultContextMenu()
	179
[aadf0af1]	180	# Separate plots
	181	self.addPlotsToContextMenu()
	182
[27313b7]	183	# Additional menu items
	184	self.contextMenu.addSeparator()
	185	self.actionAddText = self.contextMenu.addAction("Add Text")
	186	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	187	self.contextMenu.addSeparator()
	188	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	189	self.contextMenu.addSeparator()
	190	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	191	self.actionResetGraphRange =\
	192	self.contextMenu.addAction("Reset Graph Range")
	193	# Add the title change for dialogs
[aadf0af1]	194	#if self.parent:
	195	self.contextMenu.addSeparator()
	196	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	197
	198	# Define the callbacks
	199	self.actionAddText.triggered.connect(self.onAddText)
	200	self.actionRemoveText.triggered.connect(self.onRemoveText)
	201	self.actionChangeScale.triggered.connect(self.onScaleChange)
	202	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	203	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	204	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	205
[aadf0af1]	206	def addPlotsToContextMenu(self):
	207	"""
	208	Adds operations on all plotted sets of data to the context menu
	209	"""
[b3e8629]	210	for id in list(self.plot_dict.keys()):
[aadf0af1]	211	plot = self.plot_dict[id]
[b789967]	212
	213	name = plot.name if plot.name else plot.title
[aadf0af1]	214	plot_menu = self.contextMenu.addMenu('&%s' % name)
	215
	216	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	217	self.actionDataInfo.triggered.connect(
	218	functools.partial(self.onDataInfo, plot))
	219
	220	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	221	self.actionSavePointsAsFile.triggered.connect(
	222	functools.partial(self.onSavePoints, plot))
	223	plot_menu.addSeparator()
	224
	225	if plot.id != 'fit':
	226	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	227	self.actionLinearFit.triggered.connect(
	228	functools.partial(self.onLinearFit, id))
[aadf0af1]	229	plot_menu.addSeparator()
	230
	231	self.actionRemovePlot = plot_menu.addAction("Remove")
	232	self.actionRemovePlot.triggered.connect(
	233	functools.partial(self.onRemovePlot, id))
	234
	235	if not plot.is_data:
	236	self.actionFreeze = plot_menu.addAction('&Freeze')
	237	self.actionFreeze.triggered.connect(
	238	functools.partial(self.onFreeze, id))
	239	plot_menu.addSeparator()
	240
	241	if plot.is_data:
	242	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	243	if plot.dy is not None and plot.dy != []:
	244	if plot.hide_error:
	245	self.actionHideError.setText('Show Error Bar')
	246	else:
	247	self.actionHideError.setEnabled(False)
	248	self.actionHideError.triggered.connect(
	249	functools.partial(self.onToggleHideError, id))
	250	plot_menu.addSeparator()
	251
	252	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	253	self.actionModifyPlot.triggered.connect(
	254	functools.partial(self.onModifyPlot, id))
[aadf0af1]	255
	256	def createContextMenuQuick(self):
[6d05e1d]	257	"""
	258	Define context menu and associated actions for the quickplot MPL widget
	259	"""
[c4e5400]	260	# Default actions
	261	self.defaultContextMenu()
	262
	263	# Additional actions
[6d05e1d]	264	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	265	self.contextMenu.addSeparator()
	266	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	267
	268	# Define the callbacks
	269	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	270	self.actionChangeScale.triggered.connect(self.onScaleChange)
	271
	272	def onScaleChange(self):
	273	"""
	274	Show a dialog allowing axes rescaling
	275	"""
[4992ff2]	276	if self.properties.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	277	self.xLogLabel, self.yLogLabel = self.properties.getValues()
	278	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	279
[27313b7]	280	def onAddText(self):
	281	"""
	282	Show a dialog allowing adding custom text to the chart
	283	"""
[4992ff2]	284	if self.addText.exec_() == QtWidgets.QDialog.Accepted:
[9290b1a]	285	# Retrieve the new text, its font and color
	286	extra_text = self.addText.text()
	287	extra_font = self.addText.font()
	288	extra_color = self.addText.color()
	289
	290	# Place the text on the screen at (0,0)
	291	pos_x = self.x_click
	292	pos_y = self.y_click
	293
	294	# Map QFont onto MPL font
	295	mpl_font = FontProperties()
	296	mpl_font.set_size(int(extra_font.pointSize()))
	297	mpl_font.set_family(str(extra_font.family()))
	298	mpl_font.set_weight(int(extra_font.weight()))
	299	# MPL style names
	300	styles = ['normal', 'italic', 'oblique']
	301	# QFont::Style maps directly onto the above
	302	try:
	303	mpl_font.set_style(styles[extra_font.style()])
	304	except:
	305	pass
	306
	307	if len(extra_text) > 0:
	308	new_text = self.ax.text(str(pos_x),
	309	str(pos_y),
	310	extra_text,
	311	color=extra_color,
	312	fontproperties=mpl_font)
	313	# Update the list of annotations
	314	self.textList.append(new_text)
	315	self.canvas.draw_idle()
[27313b7]	316
	317	def onRemoveText(self):
	318	"""
[9290b1a]	319	Remove the most recently added text
[27313b7]	320	"""
[d3ca363]	321	num_text = len(self.textList)
	322	if num_text < 1:
	323	return
	324	txt = self.textList[num_text - 1]
	325	text_remove = txt.get_text()
	326	txt.remove()
	327	self.textList.remove(txt)
	328
	329	self.canvas.draw_idle()
[27313b7]	330
	331	def onSetGraphRange(self):
	332	"""
	333	Show a dialog allowing setting the chart ranges
	334	"""
[d3ca363]	335	# min and max of data
[4992ff2]	336	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	337	x_range = self.setRange.xrange()
	338	y_range = self.setRange.yrange()
	339	if x_range is not None and y_range is not None:
	340	self.ax.set_xlim(x_range)
	341	self.ax.set_ylim(y_range)
	342	self.canvas.draw_idle()
[27313b7]	343
	344	def onResetGraphRange(self):
	345	"""
[d3ca363]	346	Resets the chart X and Y ranges to their original values
[27313b7]	347	"""
[d3ca363]	348	x_range = (self.data.x.min(), self.data.x.max())
	349	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	350	if x_range is not None and y_range is not None:
	351	self.ax.set_xlim(x_range)
	352	self.ax.set_ylim(y_range)
	353	self.canvas.draw_idle()
[27313b7]	354
[570a58f9]	355	def onLinearFit(self, id):
[aadf0af1]	356	"""
	357	Creates and displays a simple linear fit for the selected plot
	358	"""
[570a58f9]	359	selected_plot = self.plot_dict[id]
	360
	361	maxrange = (min(selected_plot.x), max(selected_plot.x))
	362	fitrange = self.ax.get_xlim()
	363
	364	fit_dialog = LinearFit(parent=self,
	365	data=selected_plot,
	366	max_range=maxrange,
	367	fit_range=fitrange,
	368	xlabel=self.xLogLabel,
	369	ylabel=self.yLogLabel)
[4992ff2]	370	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	371	return
[aadf0af1]	372
[87cc73a]	373	def replacePlot(self, id, new_plot):
	374	"""
	375	Remove plot 'id' and add 'new_plot' to the chart.
	376	This effectlvely refreshes the chart with changes to one of its plots
	377	"""
	378	self.removePlot(id)
	379	self.plot(data=new_plot)
	380
[aadf0af1]	381	def onRemovePlot(self, id):
	382	"""
[570a58f9]	383	Responds to the plot delete action
	384	"""
	385	self.removePlot(id)
	386
	387	if len(self.plot_dict) == 0:
	388	# last plot: graph is empty must be the panel must be destroyed
	389	self.parent.close()
	390
	391	def removePlot(self, id):
	392	"""
[aadf0af1]	393	Deletes the selected plot from the chart
	394	"""
[b3e8629]	395	if id not in list(self.plot_dict.keys()):
[570a58f9]	396	return
	397
[aadf0af1]	398	selected_plot = self.plot_dict[id]
	399
	400	plot_dict = copy.deepcopy(self.plot_dict)
	401
[b46f285]	402	# Labels might have been changed
	403	xl = self.ax.xaxis.label.get_text()
	404	yl = self.ax.yaxis.label.get_text()
	405
[aadf0af1]	406	self.plot_dict = {}
	407
	408	plt.cla()
	409	self.ax.cla()
	410
	411	for ids in plot_dict:
	412	if ids != id:
[b46f285]	413	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	414
	415	# Reset the labels
	416	self.ax.set_xlabel(xl)
	417	self.ax.set_ylabel(yl)
	418	self.canvas.draw()
[aadf0af1]	419
	420	def onFreeze(self, id):
	421	"""
	422	Freezes the selected plot to a separate chart
	423	"""
	424	plot = self.plot_dict[id]
	425	self.manager.add_data(data_list=[plot])
	426
[87cc73a]	427	def onModifyPlot(self, id):
[aadf0af1]	428	"""
	429	Allows for MPL modifications to the selected plot
	430	"""
[87cc73a]	431	selected_plot = self.plot_dict[id]
	432
	433	# Old style color - single integer for enum color
	434	# New style color - #hhhhhh
	435	color = selected_plot.custom_color
	436	# marker symbol and size
	437	marker = selected_plot.symbol
	438	marker_size = selected_plot.markersize
	439	# plot name
	440	legend = selected_plot.title
	441
	442	plotPropertiesWidget = PlotProperties(self,
	443	color=color,
	444	marker=marker,
	445	marker_size=marker_size,
	446	legend=legend)
[4992ff2]	447	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	448	# Update Data1d
[0f3c22d]	449	selected_plot.markersize = plotPropertiesWidget.markersize()
	450	selected_plot.custom_color = plotPropertiesWidget.color()
	451	selected_plot.symbol = plotPropertiesWidget.marker()
	452	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	453
	454	# Redraw the plot
	455	self.replacePlot(id, selected_plot)
[aadf0af1]	456
	457	def onToggleHideError(self, id):
	458	"""
	459	Toggles hide error/show error menu item
	460	"""
	461	selected_plot = self.plot_dict[id]
	462	current = selected_plot.hide_error
	463
	464	# Flip the flag
	465	selected_plot.hide_error = not current
	466
	467	plot_dict = copy.deepcopy(self.plot_dict)
	468	self.plot_dict = {}
	469
	470	# Clean the canvas
	471	plt.cla()
	472	self.ax.cla()
	473
	474	# Recreate the plots but reverse the error flag for the current
	475	for ids in plot_dict:
	476	if ids == id:
	477	self.plot(data=plot_dict[ids], hide_error=(not current))
	478	else:
	479	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	480
[6d05e1d]	481	def xyTransform(self, xLabel="", yLabel=""):
	482	"""
	483	Transforms x and y in View and set the scale
	484	"""
[570a58f9]	485	# Transform all the plots on the chart
[b3e8629]	486	for id in list(self.plot_dict.keys()):
[570a58f9]	487	current_plot = self.plot_dict[id]
	488	if current_plot.id == "fit":
	489	self.removePlot(id)
	490	continue
[fed94a2]	491
[570a58f9]	492	new_xlabel, new_ylabel, xscale, yscale =\
	493	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	494	self.xscale = xscale
	495	self.yscale = yscale
[b46f285]	496
[570a58f9]	497	# Plot the updated chart
	498	self.removePlot(id)
[b46f285]	499
	500	# This assignment will wrap the label in Latex "$"
	501	self.xLabel = new_xlabel
	502	self.yLabel = new_ylabel
[a66ff280]	503	# Directly overwrite the data to avoid label reassignment
	504	self._data = current_plot
[87cc73a]	505	self.plot()
[570a58f9]	506
	507	pass # debug hook
	508
[fed94a2]	509	def onFitDisplay(self, fit_data):
	510	"""
	511	Add a linear fitting line to the chart
	512	"""
	513	# Create new data structure with fitting result
	514	tempx = fit_data[0]
	515	tempy = fit_data[1]
	516	self.fit_result.x = []
	517	self.fit_result.y = []
	518	self.fit_result.x = tempx
	519	self.fit_result.y = tempy
	520	self.fit_result.dx = None
	521	self.fit_result.dy = None
	522
	523	#Remove another Fit, if exists
	524	self.removePlot("fit")
	525
	526	self.fit_result.reset_view()
	527	#self.offset_graph()
	528
	529	# Set plot properties
	530	self.fit_result.id = 'fit'
	531	self.fit_result.title = 'Fit'
	532	self.fit_result.name = 'Fit'
	533
	534	# Plot the line
[87cc73a]	535	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	536
[3bdbfcc]	537	def onMplMouseDown(self, event):
	538	"""
	539	Left button down and ready to drag
	540	"""
	541	# Check that the LEFT button was pressed
[0268aed]	542	if event.button != 1:
	543	return
	544
	545	self.leftdown = True
	546	for text in self.textList:
	547	if text.contains(event)[0]: # If user has clicked on text
	548	self.selectedText = text
	549	return
	550	if event.inaxes is None:
	551	return
	552	try:
	553	self.x_click = float(event.xdata) # / size_x
	554	self.y_click = float(event.ydata) # / size_y
	555	except:
	556	self.position = None
[3bdbfcc]	557
	558	def onMplMouseUp(self, event):
	559	"""
	560	Set the data coordinates of the click
	561	"""
	562	self.x_click = event.xdata
	563	self.y_click = event.ydata
	564
	565	# Check that the LEFT button was released
	566	if event.button == 1:
	567	self.leftdown = False
	568	self.selectedText = None
	569
	570	#release the legend
	571	if self.gotLegend == 1:
	572	self.gotLegend = 0
	573
	574	def onMplMouseMotion(self, event):
	575	"""
	576	Check if the left button is press and the mouse in moving.
	577	Compute delta for x and y coordinates and then perform the drag
	578	"""
	579	if self.gotLegend == 1 and self.leftdown:
	580	self.onLegendMotion(event)
	581	return
	582
[0268aed]	583	#if self.leftdown and self.selectedText is not None:
[9f25bce]	584	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	585	return
[0268aed]	586	# User has clicked on text and is dragging
[9f25bce]	587	if event.inaxes is None:
[0268aed]	588	# User has dragged outside of axes
	589	self.selectedText = None
	590	else:
	591	# Only move text if mouse is within axes
	592	self.selectedText.set_position((event.xdata, event.ydata))
	593	self.canvas.draw_idle()
	594	return
[3bdbfcc]	595
	596	def onMplPick(self, event):
	597	"""
	598	On pick legend
	599	"""
	600	legend = self.legend
[0268aed]	601	if event.artist != legend:
	602	return
	603	# Get the box of the legend.
	604	bbox = self.legend.get_window_extent()
	605	# Get mouse coordinates at time of pick.
	606	self.mouse_x = event.mouseevent.x
	607	self.mouse_y = event.mouseevent.y
	608	# Get legend coordinates at time of pick.
	609	self.legend_x = bbox.xmin
	610	self.legend_y = bbox.ymin
	611	# Indicate we picked up the legend.
	612	self.gotLegend = 1
	613
	614	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	615
	616	def onLegendMotion(self, event):
	617	"""
	618	On legend in motion
	619	"""
	620	ax = event.inaxes
[cee5c78]	621	if ax is None:
[3bdbfcc]	622	return
	623	# Event occurred inside a plotting area
	624	lo_x, hi_x = ax.get_xlim()
	625	lo_y, hi_y = ax.get_ylim()
	626	# How much the mouse moved.
	627	x = mouse_diff_x = self.mouse_x - event.x
	628	y = mouse_diff_y = self.mouse_y - event.y
	629	# Put back inside
	630	if x < lo_x:
	631	x = lo_x
	632	if x > hi_x:
	633	x = hi_x
	634	if y < lo_y:
	635	y = lo_y
	636	if y > hi_y:
	637	y = hi_y
	638	# Move the legend from its previous location by that same amount
	639	loc_in_canvas = self.legend_x - mouse_diff_x, \
	640	self.legend_y - mouse_diff_y
	641	# Transform into legend coordinate system
	642	trans_axes = self.legend.parent.transAxes.inverted()
	643	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	644	self.legend_pos_loc = tuple(loc_in_norm_axes)
	645	self.legend._loc = self.legend_pos_loc
	646	# self.canvas.draw()
	647	self.canvas.draw_idle()
	648
	649	def onMplWheel(self, event):
	650	"""
	651	Process mouse wheel as zoom events
	652	"""
	653	ax = event.inaxes
	654	step = event.step
	655
[cee5c78]	656	if ax is not None:
[3bdbfcc]	657	# Event occurred inside a plotting area
	658	lo, hi = ax.get_xlim()
	659	lo, hi = PlotUtilities.rescale(lo, hi, step,
	660	pt=event.xdata, scale=ax.get_xscale())
	661	if not self.xscale == 'log' or lo > 0:
	662	self._scale_xlo = lo
	663	self._scale_xhi = hi
	664	ax.set_xlim((lo, hi))
	665
	666	lo, hi = ax.get_ylim()
	667	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	668	scale=ax.get_yscale())
	669	if not self.yscale == 'log' or lo > 0:
	670	self._scale_ylo = lo
	671	self._scale_yhi = hi
	672	ax.set_ylim((lo, hi))
	673	else:
	674	# Check if zoom happens in the axes
	675	xdata, ydata = None, None
	676	x, y = event.x, event.y
	677
	678	for ax in self.axes:
	679	insidex, _ = ax.xaxis.contains(event)
	680	if insidex:
	681	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	682	insidey, _ = ax.yaxis.contains(event)
	683	if insidey:
	684	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	685	if xdata is not None:
	686	lo, hi = ax.get_xlim()
	687	lo, hi = PlotUtilities.rescale(lo, hi, step,
	688	bal=xdata, scale=ax.get_xscale())
	689	if not self.xscale == 'log' or lo > 0:
	690	self._scale_xlo = lo
	691	self._scale_xhi = hi
	692	ax.set_xlim((lo, hi))
	693	if ydata is not None:
	694	lo, hi = ax.get_ylim()
	695	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	696	scale=ax.get_yscale())
	697	if not self.yscale == 'log' or lo > 0:
	698	self._scale_ylo = lo
	699	self._scale_yhi = hi
	700	ax.set_ylim((lo, hi))
	701	self.canvas.draw_idle()
	702
[c4e5400]	703
[4992ff2]	704	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	705	def __init__(self, parent=None, quickplot=False):
	706
[4992ff2]	707	QtWidgets.QDialog.__init__(self)
[aadf0af1]	708	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	709	icon = QtGui.QIcon()
	710	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	711	self.setWindowIcon(icon)
	712
[416fa8f]	713

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ 4992ff2

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