Plotter.py @ 412e069e

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 412e069e was 6280464, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
More Qt5 related fixes.
Property mode set to `100644`
File size: 24.1 KB

Rev	Line
[0849aec]	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	"""
[416fa8f]	23	def __init__(self, parent=None, manager=None, quickplot=False):
	24	super(PlotterWidget, self).__init__(parent, manager=manager, quickplot=quickplot)
[570a58f9]	25
[27313b7]	26	self.parent = parent
[8cb6cd6]	27
[aadf0af1]	28	# Dictionary of {plot_id:Data1d}
	29	self.plot_dict = {}
	30
[fed94a2]	31	# Window for text add
	32	self.addText = AddText(self)
[aadf0af1]	33
[fed94a2]	34	# Log-ness of the axes
[570a58f9]	35	self.xLogLabel = "log10(x)"
	36	self.yLogLabel = "log10(y)"
	37
	38	# Data container for the linear fit
[fed94a2]	39	self.fit_result = Data1D(x=[], y=[], dy=None)
	40	self.fit_result.symbol = 13
	41	self.fit_result.name = "Fit"
[570a58f9]	42
[31c5b58]	43	@property
	44	def data(self):
	45	return self._data
	46
	47	@data.setter
	48	def data(self, value):
[8cb6cd6]	49	""" data setter """
[31c5b58]	50	self._data = value
[6d05e1d]	51	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	52	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
[aadf0af1]	53	self.title(title=value.name)
[8cb6cd6]	54
[f0bb711]	55	def plot(self, data=None, color=None, marker=None, hide_error=False):
[8cb6cd6]	56	"""
[aadf0af1]	57	Add a new plot of self._data to the chart.
[8cb6cd6]	58	"""
[9290b1a]	59	# Data1D
	60	if isinstance(data, Data1D):
	61	self.data = data
	62	assert(self._data)
	63
[87cc73a]	64	is_fit = (self.data.id=="fit")
[570a58f9]	65
[f182f93]	66	# Transform data if required.
	67	# TODO: it properly!
	68	#if data.xtransform is not None or data.ytransform is not None:
	69	# a, b, c, d = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	70
[87cc73a]	71	# Shortcuts
[ef01be4]	72	ax = self.ax
[87cc73a]	73	x = self._data.view.x
	74	y = self._data.view.y
	75
	76	# Marker symbol. Passed marker is one of matplotlib.markers characters
	77	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	78	if marker is None:
	79	marker = self.data.symbol
[6fd4e36]	80	# Try name first
	81	try:
	82	marker = PlotUtilities.SHAPES[marker]
	83	except KeyError:
[b0b09b9]	84	marker = list(PlotUtilities.SHAPES.values())[marker]
[87cc73a]	85
[6fd4e36]	86	assert marker is not None
[87cc73a]	87	# Plot name
[b789967]	88	if self.data.title:
	89	self.title(title=self.data.title)
	90	else:
	91	self.title(title=self.data.name)
[87cc73a]	92
	93	# Error marker toggle
	94	if hide_error is None:
	95	hide_error = self.data.hide_error
	96
	97	# Plot color
	98	if color is None:
	99	color = self.data.custom_color
	100
	101	color = PlotUtilities.getValidColor(color)
	102
	103	markersize = self._data.markersize
	104
[239214f]	105	# Draw non-standard markers
	106	l_width = markersize * 0.4
	107	if marker == '-' or marker == '--':
	108	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	109	linestyle=marker, label=self._title, zorder=10)[0]
	110
	111	elif marker == 'vline':
	112	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	113	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	114	linestyle='-', label=self._title, lw=l_width, zorder=1)
	115
	116	elif marker == 'step':
	117	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	118	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	119
[c4e5400]	120	else:
[87cc73a]	121	# plot data with/without errorbars
	122	if hide_error:
	123	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	124	linestyle='', label=self._title, picker=True)
	125	else:
	126	line = ax.errorbar(x, y,
	127	yerr=self._data.view.dy, xerr=None,
	128	capsize=2, linestyle='',
	129	barsabove=False,
	130	color=color,
	131	marker=marker,
	132	markersize=markersize,
	133	lolims=False, uplims=False,
	134	xlolims=False, xuplims=False,
	135	label=self._title,
	136	picker=True)
[8cb6cd6]	137
[aadf0af1]	138	# Update the list of data sets (plots) in chart
	139	self.plot_dict[self._data.id] = self.data
	140
[8cb6cd6]	141	# Now add the legend with some customizations.
[f0bb711]	142
	143	self.legend = ax.legend(loc='upper right', shadow=True)
	144	if self.legend:
	145	self.legend.set_picker(True)
[8cb6cd6]	146
[6d05e1d]	147	# Current labels for axes
[570a58f9]	148	if self.y_label and not is_fit:
	149	ax.set_ylabel(self.y_label)
	150	if self.x_label and not is_fit:
	151	ax.set_xlabel(self.x_label)
[6d05e1d]	152
	153	# Include scaling (log vs. linear)
	154	ax.set_xscale(self.xscale)
[3b7b218]	155	ax.set_yscale(self.yscale)
[8cb6cd6]	156
[257bd57]	157	# define the ranges
	158	self.setRange = SetGraphRange(parent=self,
	159	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	160
[8cb6cd6]	161	# refresh canvas
[6280464]	162	self.canvas.draw_idle()
[8cb6cd6]	163
[aadf0af1]	164	def createContextMenu(self):
[c4e5400]	165	"""
	166	Define common context menu and associated actions for the MPL widget
	167	"""
	168	self.defaultContextMenu()
	169
[aadf0af1]	170	# Separate plots
	171	self.addPlotsToContextMenu()
	172
[27313b7]	173	# Additional menu items
	174	self.contextMenu.addSeparator()
	175	self.actionAddText = self.contextMenu.addAction("Add Text")
	176	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	177	self.contextMenu.addSeparator()
	178	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	179	self.contextMenu.addSeparator()
	180	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	181	self.actionResetGraphRange =\
	182	self.contextMenu.addAction("Reset Graph Range")
	183	# Add the title change for dialogs
[aadf0af1]	184	#if self.parent:
	185	self.contextMenu.addSeparator()
	186	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	187
	188	# Define the callbacks
	189	self.actionAddText.triggered.connect(self.onAddText)
	190	self.actionRemoveText.triggered.connect(self.onRemoveText)
	191	self.actionChangeScale.triggered.connect(self.onScaleChange)
	192	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	193	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	194	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	195
[aadf0af1]	196	def addPlotsToContextMenu(self):
	197	"""
	198	Adds operations on all plotted sets of data to the context menu
	199	"""
[b0b09b9]	200	for id in list(self.plot_dict.keys()):
[aadf0af1]	201	plot = self.plot_dict[id]
[b789967]	202
	203	name = plot.name if plot.name else plot.title
[aadf0af1]	204	plot_menu = self.contextMenu.addMenu('&%s' % name)
	205
	206	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	207	self.actionDataInfo.triggered.connect(
	208	functools.partial(self.onDataInfo, plot))
	209
	210	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	211	self.actionSavePointsAsFile.triggered.connect(
	212	functools.partial(self.onSavePoints, plot))
	213	plot_menu.addSeparator()
	214
	215	if plot.id != 'fit':
	216	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	217	self.actionLinearFit.triggered.connect(
	218	functools.partial(self.onLinearFit, id))
[aadf0af1]	219	plot_menu.addSeparator()
	220
	221	self.actionRemovePlot = plot_menu.addAction("Remove")
	222	self.actionRemovePlot.triggered.connect(
	223	functools.partial(self.onRemovePlot, id))
	224
	225	if not plot.is_data:
	226	self.actionFreeze = plot_menu.addAction('&Freeze')
	227	self.actionFreeze.triggered.connect(
	228	functools.partial(self.onFreeze, id))
	229	plot_menu.addSeparator()
	230
	231	if plot.is_data:
	232	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	233	if plot.dy is not None and plot.dy != []:
	234	if plot.hide_error:
	235	self.actionHideError.setText('Show Error Bar')
	236	else:
	237	self.actionHideError.setEnabled(False)
	238	self.actionHideError.triggered.connect(
	239	functools.partial(self.onToggleHideError, id))
	240	plot_menu.addSeparator()
	241
	242	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	243	self.actionModifyPlot.triggered.connect(
	244	functools.partial(self.onModifyPlot, id))
[aadf0af1]	245
	246	def createContextMenuQuick(self):
[6d05e1d]	247	"""
	248	Define context menu and associated actions for the quickplot MPL widget
	249	"""
[c4e5400]	250	# Default actions
	251	self.defaultContextMenu()
	252
	253	# Additional actions
[6d05e1d]	254	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	255	self.contextMenu.addSeparator()
	256	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	257
	258	# Define the callbacks
	259	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	260	self.actionChangeScale.triggered.connect(self.onScaleChange)
	261
	262	def onScaleChange(self):
	263	"""
	264	Show a dialog allowing axes rescaling
	265	"""
[0849aec]	266	if self.properties.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	267	self.xLogLabel, self.yLogLabel = self.properties.getValues()
	268	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	269
[27313b7]	270	def onAddText(self):
	271	"""
	272	Show a dialog allowing adding custom text to the chart
	273	"""
[0849aec]	274	if self.addText.exec_() == QtWidgets.QDialog.Accepted:
[9290b1a]	275	# Retrieve the new text, its font and color
	276	extra_text = self.addText.text()
	277	extra_font = self.addText.font()
	278	extra_color = self.addText.color()
	279
	280	# Place the text on the screen at (0,0)
	281	pos_x = self.x_click
	282	pos_y = self.y_click
	283
	284	# Map QFont onto MPL font
	285	mpl_font = FontProperties()
	286	mpl_font.set_size(int(extra_font.pointSize()))
	287	mpl_font.set_family(str(extra_font.family()))
	288	mpl_font.set_weight(int(extra_font.weight()))
	289	# MPL style names
	290	styles = ['normal', 'italic', 'oblique']
	291	# QFont::Style maps directly onto the above
	292	try:
	293	mpl_font.set_style(styles[extra_font.style()])
	294	except:
	295	pass
	296
	297	if len(extra_text) > 0:
	298	new_text = self.ax.text(str(pos_x),
	299	str(pos_y),
	300	extra_text,
	301	color=extra_color,
	302	fontproperties=mpl_font)
	303	# Update the list of annotations
	304	self.textList.append(new_text)
	305	self.canvas.draw_idle()
[27313b7]	306
	307	def onRemoveText(self):
	308	"""
[9290b1a]	309	Remove the most recently added text
[27313b7]	310	"""
[d3ca363]	311	num_text = len(self.textList)
	312	if num_text < 1:
	313	return
	314	txt = self.textList[num_text - 1]
	315	text_remove = txt.get_text()
	316	txt.remove()
	317	self.textList.remove(txt)
	318
	319	self.canvas.draw_idle()
[27313b7]	320
	321	def onSetGraphRange(self):
	322	"""
	323	Show a dialog allowing setting the chart ranges
	324	"""
[d3ca363]	325	# min and max of data
[0849aec]	326	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	327	x_range = self.setRange.xrange()
	328	y_range = self.setRange.yrange()
	329	if x_range is not None and y_range is not None:
	330	self.ax.set_xlim(x_range)
	331	self.ax.set_ylim(y_range)
	332	self.canvas.draw_idle()
[27313b7]	333
	334	def onResetGraphRange(self):
	335	"""
[d3ca363]	336	Resets the chart X and Y ranges to their original values
[27313b7]	337	"""
[d3ca363]	338	x_range = (self.data.x.min(), self.data.x.max())
	339	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	340	if x_range is not None and y_range is not None:
	341	self.ax.set_xlim(x_range)
	342	self.ax.set_ylim(y_range)
	343	self.canvas.draw_idle()
[27313b7]	344
[570a58f9]	345	def onLinearFit(self, id):
[aadf0af1]	346	"""
	347	Creates and displays a simple linear fit for the selected plot
	348	"""
[570a58f9]	349	selected_plot = self.plot_dict[id]
	350
	351	maxrange = (min(selected_plot.x), max(selected_plot.x))
	352	fitrange = self.ax.get_xlim()
	353
	354	fit_dialog = LinearFit(parent=self,
	355	data=selected_plot,
	356	max_range=maxrange,
	357	fit_range=fitrange,
	358	xlabel=self.xLogLabel,
	359	ylabel=self.yLogLabel)
[304d082]	360	fit_dialog.updatePlot.connect(self.onFitDisplay)
[0849aec]	361	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	362	return
[aadf0af1]	363
[87cc73a]	364	def replacePlot(self, id, new_plot):
	365	"""
	366	Remove plot 'id' and add 'new_plot' to the chart.
	367	This effectlvely refreshes the chart with changes to one of its plots
	368	"""
	369	self.removePlot(id)
	370	self.plot(data=new_plot)
	371
[aadf0af1]	372	def onRemovePlot(self, id):
	373	"""
[570a58f9]	374	Responds to the plot delete action
	375	"""
	376	self.removePlot(id)
	377
	378	if len(self.plot_dict) == 0:
	379	# last plot: graph is empty must be the panel must be destroyed
	380	self.parent.close()
	381
	382	def removePlot(self, id):
	383	"""
[aadf0af1]	384	Deletes the selected plot from the chart
	385	"""
[b0b09b9]	386	if id not in list(self.plot_dict.keys()):
[570a58f9]	387	return
	388
[aadf0af1]	389	selected_plot = self.plot_dict[id]
	390
	391	plot_dict = copy.deepcopy(self.plot_dict)
	392
[b46f285]	393	# Labels might have been changed
	394	xl = self.ax.xaxis.label.get_text()
	395	yl = self.ax.yaxis.label.get_text()
	396
[aadf0af1]	397	self.plot_dict = {}
	398
	399	plt.cla()
	400	self.ax.cla()
	401
	402	for ids in plot_dict:
	403	if ids != id:
[b46f285]	404	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	405
	406	# Reset the labels
	407	self.ax.set_xlabel(xl)
	408	self.ax.set_ylabel(yl)
	409	self.canvas.draw()
[aadf0af1]	410
	411	def onFreeze(self, id):
	412	"""
	413	Freezes the selected plot to a separate chart
	414	"""
	415	plot = self.plot_dict[id]
	416	self.manager.add_data(data_list=[plot])
	417
[87cc73a]	418	def onModifyPlot(self, id):
[aadf0af1]	419	"""
	420	Allows for MPL modifications to the selected plot
	421	"""
[87cc73a]	422	selected_plot = self.plot_dict[id]
	423
	424	# Old style color - single integer for enum color
	425	# New style color - #hhhhhh
	426	color = selected_plot.custom_color
	427	# marker symbol and size
	428	marker = selected_plot.symbol
	429	marker_size = selected_plot.markersize
	430	# plot name
	431	legend = selected_plot.title
	432
	433	plotPropertiesWidget = PlotProperties(self,
	434	color=color,
	435	marker=marker,
	436	marker_size=marker_size,
	437	legend=legend)
[0849aec]	438	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	439	# Update Data1d
[0f3c22d]	440	selected_plot.markersize = plotPropertiesWidget.markersize()
	441	selected_plot.custom_color = plotPropertiesWidget.color()
	442	selected_plot.symbol = plotPropertiesWidget.marker()
	443	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	444
	445	# Redraw the plot
	446	self.replacePlot(id, selected_plot)
[aadf0af1]	447
	448	def onToggleHideError(self, id):
	449	"""
	450	Toggles hide error/show error menu item
	451	"""
	452	selected_plot = self.plot_dict[id]
	453	current = selected_plot.hide_error
	454
	455	# Flip the flag
	456	selected_plot.hide_error = not current
	457
	458	plot_dict = copy.deepcopy(self.plot_dict)
	459	self.plot_dict = {}
	460
	461	# Clean the canvas
	462	plt.cla()
	463	self.ax.cla()
	464
	465	# Recreate the plots but reverse the error flag for the current
	466	for ids in plot_dict:
	467	if ids == id:
	468	self.plot(data=plot_dict[ids], hide_error=(not current))
	469	else:
	470	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	471
[6d05e1d]	472	def xyTransform(self, xLabel="", yLabel=""):
	473	"""
	474	Transforms x and y in View and set the scale
	475	"""
[570a58f9]	476	# Transform all the plots on the chart
[b0b09b9]	477	for id in list(self.plot_dict.keys()):
[570a58f9]	478	current_plot = self.plot_dict[id]
	479	if current_plot.id == "fit":
	480	self.removePlot(id)
	481	continue
[fed94a2]	482
[570a58f9]	483	new_xlabel, new_ylabel, xscale, yscale =\
	484	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	485	self.xscale = xscale
	486	self.yscale = yscale
[b46f285]	487
[570a58f9]	488	# Plot the updated chart
	489	self.removePlot(id)
[b46f285]	490
	491	# This assignment will wrap the label in Latex "$"
	492	self.xLabel = new_xlabel
	493	self.yLabel = new_ylabel
[a66ff280]	494	# Directly overwrite the data to avoid label reassignment
	495	self._data = current_plot
[87cc73a]	496	self.plot()
[570a58f9]	497
	498	pass # debug hook
	499
[fed94a2]	500	def onFitDisplay(self, fit_data):
	501	"""
	502	Add a linear fitting line to the chart
	503	"""
	504	# Create new data structure with fitting result
	505	tempx = fit_data[0]
	506	tempy = fit_data[1]
	507	self.fit_result.x = []
	508	self.fit_result.y = []
	509	self.fit_result.x = tempx
	510	self.fit_result.y = tempy
	511	self.fit_result.dx = None
	512	self.fit_result.dy = None
	513
	514	#Remove another Fit, if exists
	515	self.removePlot("fit")
	516
	517	self.fit_result.reset_view()
	518	#self.offset_graph()
	519
	520	# Set plot properties
	521	self.fit_result.id = 'fit'
	522	self.fit_result.title = 'Fit'
	523	self.fit_result.name = 'Fit'
	524
	525	# Plot the line
[87cc73a]	526	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	527
[3bdbfcc]	528	def onMplMouseDown(self, event):
	529	"""
	530	Left button down and ready to drag
	531	"""
	532	# Check that the LEFT button was pressed
[0268aed]	533	if event.button != 1:
	534	return
	535
	536	self.leftdown = True
	537	for text in self.textList:
	538	if text.contains(event)[0]: # If user has clicked on text
	539	self.selectedText = text
	540	return
	541	if event.inaxes is None:
	542	return
	543	try:
	544	self.x_click = float(event.xdata) # / size_x
	545	self.y_click = float(event.ydata) # / size_y
	546	except:
	547	self.position = None
[3bdbfcc]	548
	549	def onMplMouseUp(self, event):
	550	"""
	551	Set the data coordinates of the click
	552	"""
	553	self.x_click = event.xdata
	554	self.y_click = event.ydata
	555
	556	# Check that the LEFT button was released
	557	if event.button == 1:
	558	self.leftdown = False
	559	self.selectedText = None
	560
	561	#release the legend
	562	if self.gotLegend == 1:
	563	self.gotLegend = 0
	564
	565	def onMplMouseMotion(self, event):
	566	"""
	567	Check if the left button is press and the mouse in moving.
	568	Compute delta for x and y coordinates and then perform the drag
	569	"""
	570	if self.gotLegend == 1 and self.leftdown:
	571	self.onLegendMotion(event)
	572	return
	573
[0268aed]	574	#if self.leftdown and self.selectedText is not None:
[9f25bce]	575	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	576	return
[0268aed]	577	# User has clicked on text and is dragging
[9f25bce]	578	if event.inaxes is None:
[0268aed]	579	# User has dragged outside of axes
	580	self.selectedText = None
	581	else:
	582	# Only move text if mouse is within axes
	583	self.selectedText.set_position((event.xdata, event.ydata))
	584	self.canvas.draw_idle()
	585	return
[3bdbfcc]	586
	587	def onMplPick(self, event):
	588	"""
	589	On pick legend
	590	"""
	591	legend = self.legend
[0268aed]	592	if event.artist != legend:
	593	return
	594	# Get the box of the legend.
	595	bbox = self.legend.get_window_extent()
	596	# Get mouse coordinates at time of pick.
	597	self.mouse_x = event.mouseevent.x
	598	self.mouse_y = event.mouseevent.y
	599	# Get legend coordinates at time of pick.
	600	self.legend_x = bbox.xmin
	601	self.legend_y = bbox.ymin
	602	# Indicate we picked up the legend.
	603	self.gotLegend = 1
	604
	605	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	606
	607	def onLegendMotion(self, event):
	608	"""
	609	On legend in motion
	610	"""
	611	ax = event.inaxes
[895e7359]	612	if ax is None:
[3bdbfcc]	613	return
	614	# Event occurred inside a plotting area
	615	lo_x, hi_x = ax.get_xlim()
	616	lo_y, hi_y = ax.get_ylim()
	617	# How much the mouse moved.
	618	x = mouse_diff_x = self.mouse_x - event.x
	619	y = mouse_diff_y = self.mouse_y - event.y
	620	# Put back inside
	621	if x < lo_x:
	622	x = lo_x
	623	if x > hi_x:
	624	x = hi_x
	625	if y < lo_y:
	626	y = lo_y
	627	if y > hi_y:
	628	y = hi_y
	629	# Move the legend from its previous location by that same amount
	630	loc_in_canvas = self.legend_x - mouse_diff_x, \
	631	self.legend_y - mouse_diff_y
	632	# Transform into legend coordinate system
	633	trans_axes = self.legend.parent.transAxes.inverted()
	634	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	635	self.legend_pos_loc = tuple(loc_in_norm_axes)
	636	self.legend._loc = self.legend_pos_loc
	637	# self.canvas.draw()
	638	self.canvas.draw_idle()
	639
	640	def onMplWheel(self, event):
	641	"""
	642	Process mouse wheel as zoom events
	643	"""
	644	ax = event.inaxes
	645	step = event.step
	646
[895e7359]	647	if ax is not None:
[3bdbfcc]	648	# Event occurred inside a plotting area
	649	lo, hi = ax.get_xlim()
	650	lo, hi = PlotUtilities.rescale(lo, hi, step,
	651	pt=event.xdata, scale=ax.get_xscale())
	652	if not self.xscale == 'log' or lo > 0:
	653	self._scale_xlo = lo
	654	self._scale_xhi = hi
	655	ax.set_xlim((lo, hi))
	656
	657	lo, hi = ax.get_ylim()
	658	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	659	scale=ax.get_yscale())
	660	if not self.yscale == 'log' or lo > 0:
	661	self._scale_ylo = lo
	662	self._scale_yhi = hi
	663	ax.set_ylim((lo, hi))
	664	else:
	665	# Check if zoom happens in the axes
	666	xdata, ydata = None, None
	667	x, y = event.x, event.y
	668
	669	for ax in self.axes:
	670	insidex, _ = ax.xaxis.contains(event)
	671	if insidex:
	672	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	673	insidey, _ = ax.yaxis.contains(event)
	674	if insidey:
	675	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	676	if xdata is not None:
	677	lo, hi = ax.get_xlim()
	678	lo, hi = PlotUtilities.rescale(lo, hi, step,
	679	bal=xdata, scale=ax.get_xscale())
	680	if not self.xscale == 'log' or lo > 0:
	681	self._scale_xlo = lo
	682	self._scale_xhi = hi
	683	ax.set_xlim((lo, hi))
	684	if ydata is not None:
	685	lo, hi = ax.get_ylim()
	686	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	687	scale=ax.get_yscale())
	688	if not self.yscale == 'log' or lo > 0:
	689	self._scale_ylo = lo
	690	self._scale_yhi = hi
	691	ax.set_ylim((lo, hi))
	692	self.canvas.draw_idle()
	693
[c4e5400]	694
[0849aec]	695	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	696	def __init__(self, parent=None, quickplot=False):
	697
[0849aec]	698	QtWidgets.QDialog.__init__(self)
[aadf0af1]	699	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	700	icon = QtGui.QIcon()
	701	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	702	self.setWindowIcon(icon)
	703
[416fa8f]	704

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ 412e069e

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