Plotter.py @ fbfc488

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 fbfc488 was fbfc488, checked in by Piotr Rozyczko <rozyczko@…>, 6 years ago
More Qt5 related fixes.
Property mode set to `100644`
File size: 24.2 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
[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)
[749b715]	53	if value.isSesans:
	54	self.xscale = 'linear'
	55	self.yscale = 'linear'
[aadf0af1]	56	self.title(title=value.name)
[8cb6cd6]	57
[f0bb711]	58	def plot(self, data=None, color=None, marker=None, hide_error=False):
[8cb6cd6]	59	"""
[aadf0af1]	60	Add a new plot of self._data to the chart.
[8cb6cd6]	61	"""
[9290b1a]	62	# Data1D
	63	if isinstance(data, Data1D):
	64	self.data = data
	65	assert(self._data)
	66
[87cc73a]	67	is_fit = (self.data.id=="fit")
[570a58f9]	68
[f182f93]	69	# Transform data if required.
	70	# TODO: it properly!
	71	#if data.xtransform is not None or data.ytransform is not None:
	72	# a, b, c, d = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	73
[87cc73a]	74	# Shortcuts
[ef01be4]	75	ax = self.ax
[87cc73a]	76	x = self._data.view.x
	77	y = self._data.view.y
	78
	79	# Marker symbol. Passed marker is one of matplotlib.markers characters
	80	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	81	if marker is None:
	82	marker = self.data.symbol
[6fd4e36]	83	# Try name first
	84	try:
	85	marker = PlotUtilities.SHAPES[marker]
	86	except KeyError:
[b3e8629]	87	marker = list(PlotUtilities.SHAPES.values())[marker]
[87cc73a]	88
[6fd4e36]	89	assert marker is not None
[87cc73a]	90	# Plot name
[b789967]	91	if self.data.title:
	92	self.title(title=self.data.title)
	93	else:
	94	self.title(title=self.data.name)
[87cc73a]	95
	96	# Error marker toggle
	97	if hide_error is None:
	98	hide_error = self.data.hide_error
	99
	100	# Plot color
	101	if color is None:
	102	color = self.data.custom_color
	103
	104	color = PlotUtilities.getValidColor(color)
	105
	106	markersize = self._data.markersize
	107
[239214f]	108	# Draw non-standard markers
	109	l_width = markersize * 0.4
	110	if marker == '-' or marker == '--':
	111	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	112	linestyle=marker, label=self._title, zorder=10)[0]
	113
	114	elif marker == 'vline':
	115	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	116	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	117	linestyle='-', label=self._title, lw=l_width, zorder=1)
	118
	119	elif marker == 'step':
	120	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	121	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	122
[c4e5400]	123	else:
[87cc73a]	124	# plot data with/without errorbars
	125	if hide_error:
	126	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	127	linestyle='', label=self._title, picker=True)
	128	else:
	129	line = ax.errorbar(x, y,
	130	yerr=self._data.view.dy, xerr=None,
	131	capsize=2, linestyle='',
	132	barsabove=False,
	133	color=color,
	134	marker=marker,
	135	markersize=markersize,
	136	lolims=False, uplims=False,
	137	xlolims=False, xuplims=False,
	138	label=self._title,
	139	picker=True)
[8cb6cd6]	140
[aadf0af1]	141	# Update the list of data sets (plots) in chart
	142	self.plot_dict[self._data.id] = self.data
	143
[8cb6cd6]	144	# Now add the legend with some customizations.
[f0bb711]	145
	146	self.legend = ax.legend(loc='upper right', shadow=True)
	147	if self.legend:
	148	self.legend.set_picker(True)
[8cb6cd6]	149
[6d05e1d]	150	# Current labels for axes
[570a58f9]	151	if self.y_label and not is_fit:
	152	ax.set_ylabel(self.y_label)
	153	if self.x_label and not is_fit:
	154	ax.set_xlabel(self.x_label)
[6d05e1d]	155
	156	# Include scaling (log vs. linear)
	157	ax.set_xscale(self.xscale)
[3b7b218]	158	ax.set_yscale(self.yscale)
[8cb6cd6]	159
[257bd57]	160	# define the ranges
	161	self.setRange = SetGraphRange(parent=self,
	162	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	163
[8cb6cd6]	164	# refresh canvas
[fbfc488]	165	self.canvas.draw_idle()
[8cb6cd6]	166
[aadf0af1]	167	def createContextMenu(self):
[c4e5400]	168	"""
	169	Define common context menu and associated actions for the MPL widget
	170	"""
	171	self.defaultContextMenu()
	172
[aadf0af1]	173	# Separate plots
	174	self.addPlotsToContextMenu()
	175
[27313b7]	176	# Additional menu items
	177	self.contextMenu.addSeparator()
	178	self.actionAddText = self.contextMenu.addAction("Add Text")
	179	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	180	self.contextMenu.addSeparator()
	181	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	182	self.contextMenu.addSeparator()
	183	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	184	self.actionResetGraphRange =\
	185	self.contextMenu.addAction("Reset Graph Range")
	186	# Add the title change for dialogs
[aadf0af1]	187	#if self.parent:
	188	self.contextMenu.addSeparator()
	189	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	190
	191	# Define the callbacks
	192	self.actionAddText.triggered.connect(self.onAddText)
	193	self.actionRemoveText.triggered.connect(self.onRemoveText)
	194	self.actionChangeScale.triggered.connect(self.onScaleChange)
	195	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	196	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	197	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	198
[aadf0af1]	199	def addPlotsToContextMenu(self):
	200	"""
	201	Adds operations on all plotted sets of data to the context menu
	202	"""
[b3e8629]	203	for id in list(self.plot_dict.keys()):
[aadf0af1]	204	plot = self.plot_dict[id]
[b789967]	205
	206	name = plot.name if plot.name else plot.title
[aadf0af1]	207	plot_menu = self.contextMenu.addMenu('&%s' % name)
	208
	209	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	210	self.actionDataInfo.triggered.connect(
	211	functools.partial(self.onDataInfo, plot))
	212
	213	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	214	self.actionSavePointsAsFile.triggered.connect(
	215	functools.partial(self.onSavePoints, plot))
	216	plot_menu.addSeparator()
	217
	218	if plot.id != 'fit':
	219	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	220	self.actionLinearFit.triggered.connect(
	221	functools.partial(self.onLinearFit, id))
[aadf0af1]	222	plot_menu.addSeparator()
	223
	224	self.actionRemovePlot = plot_menu.addAction("Remove")
	225	self.actionRemovePlot.triggered.connect(
	226	functools.partial(self.onRemovePlot, id))
	227
	228	if not plot.is_data:
	229	self.actionFreeze = plot_menu.addAction('&Freeze')
	230	self.actionFreeze.triggered.connect(
	231	functools.partial(self.onFreeze, id))
	232	plot_menu.addSeparator()
	233
	234	if plot.is_data:
	235	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	236	if plot.dy is not None and plot.dy != []:
	237	if plot.hide_error:
	238	self.actionHideError.setText('Show Error Bar')
	239	else:
	240	self.actionHideError.setEnabled(False)
	241	self.actionHideError.triggered.connect(
	242	functools.partial(self.onToggleHideError, id))
	243	plot_menu.addSeparator()
	244
	245	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	246	self.actionModifyPlot.triggered.connect(
	247	functools.partial(self.onModifyPlot, id))
[aadf0af1]	248
	249	def createContextMenuQuick(self):
[6d05e1d]	250	"""
	251	Define context menu and associated actions for the quickplot MPL widget
	252	"""
[c4e5400]	253	# Default actions
	254	self.defaultContextMenu()
	255
	256	# Additional actions
[6d05e1d]	257	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	258	self.contextMenu.addSeparator()
	259	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	260
	261	# Define the callbacks
	262	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	263	self.actionChangeScale.triggered.connect(self.onScaleChange)
	264
	265	def onScaleChange(self):
	266	"""
	267	Show a dialog allowing axes rescaling
	268	"""
[4992ff2]	269	if self.properties.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	270	self.xLogLabel, self.yLogLabel = self.properties.getValues()
	271	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	272
[27313b7]	273	def onAddText(self):
	274	"""
	275	Show a dialog allowing adding custom text to the chart
	276	"""
[4992ff2]	277	if self.addText.exec_() == QtWidgets.QDialog.Accepted:
[9290b1a]	278	# Retrieve the new text, its font and color
	279	extra_text = self.addText.text()
	280	extra_font = self.addText.font()
	281	extra_color = self.addText.color()
	282
	283	# Place the text on the screen at (0,0)
	284	pos_x = self.x_click
	285	pos_y = self.y_click
	286
	287	# Map QFont onto MPL font
	288	mpl_font = FontProperties()
	289	mpl_font.set_size(int(extra_font.pointSize()))
	290	mpl_font.set_family(str(extra_font.family()))
	291	mpl_font.set_weight(int(extra_font.weight()))
	292	# MPL style names
	293	styles = ['normal', 'italic', 'oblique']
	294	# QFont::Style maps directly onto the above
	295	try:
	296	mpl_font.set_style(styles[extra_font.style()])
	297	except:
	298	pass
	299
	300	if len(extra_text) > 0:
	301	new_text = self.ax.text(str(pos_x),
	302	str(pos_y),
	303	extra_text,
	304	color=extra_color,
	305	fontproperties=mpl_font)
	306	# Update the list of annotations
	307	self.textList.append(new_text)
	308	self.canvas.draw_idle()
[27313b7]	309
	310	def onRemoveText(self):
	311	"""
[9290b1a]	312	Remove the most recently added text
[27313b7]	313	"""
[d3ca363]	314	num_text = len(self.textList)
	315	if num_text < 1:
	316	return
	317	txt = self.textList[num_text - 1]
	318	text_remove = txt.get_text()
	319	txt.remove()
	320	self.textList.remove(txt)
	321
	322	self.canvas.draw_idle()
[27313b7]	323
	324	def onSetGraphRange(self):
	325	"""
	326	Show a dialog allowing setting the chart ranges
	327	"""
[d3ca363]	328	# min and max of data
[4992ff2]	329	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	330	x_range = self.setRange.xrange()
	331	y_range = self.setRange.yrange()
	332	if x_range is not None and y_range is not None:
	333	self.ax.set_xlim(x_range)
	334	self.ax.set_ylim(y_range)
	335	self.canvas.draw_idle()
[27313b7]	336
	337	def onResetGraphRange(self):
	338	"""
[d3ca363]	339	Resets the chart X and Y ranges to their original values
[27313b7]	340	"""
[d3ca363]	341	x_range = (self.data.x.min(), self.data.x.max())
	342	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	343	if x_range is not None and y_range is not None:
	344	self.ax.set_xlim(x_range)
	345	self.ax.set_ylim(y_range)
	346	self.canvas.draw_idle()
[27313b7]	347
[570a58f9]	348	def onLinearFit(self, id):
[aadf0af1]	349	"""
	350	Creates and displays a simple linear fit for the selected plot
	351	"""
[570a58f9]	352	selected_plot = self.plot_dict[id]
	353
	354	maxrange = (min(selected_plot.x), max(selected_plot.x))
	355	fitrange = self.ax.get_xlim()
	356
	357	fit_dialog = LinearFit(parent=self,
	358	data=selected_plot,
	359	max_range=maxrange,
	360	fit_range=fitrange,
	361	xlabel=self.xLogLabel,
	362	ylabel=self.yLogLabel)
[7969b9c]	363	fit_dialog.updatePlot.connect(self.onFitDisplay)
[4992ff2]	364	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	365	return
[aadf0af1]	366
[87cc73a]	367	def replacePlot(self, id, new_plot):
	368	"""
	369	Remove plot 'id' and add 'new_plot' to the chart.
	370	This effectlvely refreshes the chart with changes to one of its plots
	371	"""
	372	self.removePlot(id)
	373	self.plot(data=new_plot)
	374
[aadf0af1]	375	def onRemovePlot(self, id):
	376	"""
[570a58f9]	377	Responds to the plot delete action
	378	"""
	379	self.removePlot(id)
	380
	381	if len(self.plot_dict) == 0:
	382	# last plot: graph is empty must be the panel must be destroyed
	383	self.parent.close()
	384
	385	def removePlot(self, id):
	386	"""
[aadf0af1]	387	Deletes the selected plot from the chart
	388	"""
[b3e8629]	389	if id not in list(self.plot_dict.keys()):
[570a58f9]	390	return
	391
[aadf0af1]	392	selected_plot = self.plot_dict[id]
	393
	394	plot_dict = copy.deepcopy(self.plot_dict)
	395
[b46f285]	396	# Labels might have been changed
	397	xl = self.ax.xaxis.label.get_text()
	398	yl = self.ax.yaxis.label.get_text()
	399
[aadf0af1]	400	self.plot_dict = {}
	401
	402	plt.cla()
	403	self.ax.cla()
	404
	405	for ids in plot_dict:
	406	if ids != id:
[b46f285]	407	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	408
	409	# Reset the labels
	410	self.ax.set_xlabel(xl)
	411	self.ax.set_ylabel(yl)
	412	self.canvas.draw()
[aadf0af1]	413
	414	def onFreeze(self, id):
	415	"""
	416	Freezes the selected plot to a separate chart
	417	"""
	418	plot = self.plot_dict[id]
	419	self.manager.add_data(data_list=[plot])
	420
[87cc73a]	421	def onModifyPlot(self, id):
[aadf0af1]	422	"""
	423	Allows for MPL modifications to the selected plot
	424	"""
[87cc73a]	425	selected_plot = self.plot_dict[id]
	426
	427	# Old style color - single integer for enum color
	428	# New style color - #hhhhhh
	429	color = selected_plot.custom_color
	430	# marker symbol and size
	431	marker = selected_plot.symbol
	432	marker_size = selected_plot.markersize
	433	# plot name
	434	legend = selected_plot.title
	435
	436	plotPropertiesWidget = PlotProperties(self,
	437	color=color,
	438	marker=marker,
	439	marker_size=marker_size,
	440	legend=legend)
[4992ff2]	441	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	442	# Update Data1d
[0f3c22d]	443	selected_plot.markersize = plotPropertiesWidget.markersize()
	444	selected_plot.custom_color = plotPropertiesWidget.color()
	445	selected_plot.symbol = plotPropertiesWidget.marker()
	446	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	447
	448	# Redraw the plot
	449	self.replacePlot(id, selected_plot)
[aadf0af1]	450
	451	def onToggleHideError(self, id):
	452	"""
	453	Toggles hide error/show error menu item
	454	"""
	455	selected_plot = self.plot_dict[id]
	456	current = selected_plot.hide_error
	457
	458	# Flip the flag
	459	selected_plot.hide_error = not current
	460
	461	plot_dict = copy.deepcopy(self.plot_dict)
	462	self.plot_dict = {}
	463
	464	# Clean the canvas
	465	plt.cla()
	466	self.ax.cla()
	467
	468	# Recreate the plots but reverse the error flag for the current
	469	for ids in plot_dict:
	470	if ids == id:
	471	self.plot(data=plot_dict[ids], hide_error=(not current))
	472	else:
	473	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	474
[6d05e1d]	475	def xyTransform(self, xLabel="", yLabel=""):
	476	"""
	477	Transforms x and y in View and set the scale
	478	"""
[570a58f9]	479	# Transform all the plots on the chart
[b3e8629]	480	for id in list(self.plot_dict.keys()):
[570a58f9]	481	current_plot = self.plot_dict[id]
	482	if current_plot.id == "fit":
	483	self.removePlot(id)
	484	continue
[fed94a2]	485
[570a58f9]	486	new_xlabel, new_ylabel, xscale, yscale =\
	487	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	488	self.xscale = xscale
	489	self.yscale = yscale
[b46f285]	490
[570a58f9]	491	# Plot the updated chart
	492	self.removePlot(id)
[b46f285]	493
	494	# This assignment will wrap the label in Latex "$"
	495	self.xLabel = new_xlabel
	496	self.yLabel = new_ylabel
[a66ff280]	497	# Directly overwrite the data to avoid label reassignment
	498	self._data = current_plot
[87cc73a]	499	self.plot()
[570a58f9]	500
	501	pass # debug hook
	502
[fed94a2]	503	def onFitDisplay(self, fit_data):
	504	"""
	505	Add a linear fitting line to the chart
	506	"""
	507	# Create new data structure with fitting result
	508	tempx = fit_data[0]
	509	tempy = fit_data[1]
	510	self.fit_result.x = []
	511	self.fit_result.y = []
	512	self.fit_result.x = tempx
	513	self.fit_result.y = tempy
	514	self.fit_result.dx = None
	515	self.fit_result.dy = None
	516
	517	#Remove another Fit, if exists
	518	self.removePlot("fit")
	519
	520	self.fit_result.reset_view()
	521	#self.offset_graph()
	522
	523	# Set plot properties
	524	self.fit_result.id = 'fit'
	525	self.fit_result.title = 'Fit'
	526	self.fit_result.name = 'Fit'
	527
	528	# Plot the line
[87cc73a]	529	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	530
[3bdbfcc]	531	def onMplMouseDown(self, event):
	532	"""
	533	Left button down and ready to drag
	534	"""
	535	# Check that the LEFT button was pressed
[0268aed]	536	if event.button != 1:
	537	return
	538
	539	self.leftdown = True
	540	for text in self.textList:
	541	if text.contains(event)[0]: # If user has clicked on text
	542	self.selectedText = text
	543	return
	544	if event.inaxes is None:
	545	return
	546	try:
	547	self.x_click = float(event.xdata) # / size_x
	548	self.y_click = float(event.ydata) # / size_y
	549	except:
	550	self.position = None
[3bdbfcc]	551
	552	def onMplMouseUp(self, event):
	553	"""
	554	Set the data coordinates of the click
	555	"""
	556	self.x_click = event.xdata
	557	self.y_click = event.ydata
	558
	559	# Check that the LEFT button was released
	560	if event.button == 1:
	561	self.leftdown = False
	562	self.selectedText = None
	563
	564	#release the legend
	565	if self.gotLegend == 1:
	566	self.gotLegend = 0
	567
	568	def onMplMouseMotion(self, event):
	569	"""
	570	Check if the left button is press and the mouse in moving.
	571	Compute delta for x and y coordinates and then perform the drag
	572	"""
	573	if self.gotLegend == 1 and self.leftdown:
	574	self.onLegendMotion(event)
	575	return
	576
[0268aed]	577	#if self.leftdown and self.selectedText is not None:
[9f25bce]	578	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	579	return
[0268aed]	580	# User has clicked on text and is dragging
[9f25bce]	581	if event.inaxes is None:
[0268aed]	582	# User has dragged outside of axes
	583	self.selectedText = None
	584	else:
	585	# Only move text if mouse is within axes
	586	self.selectedText.set_position((event.xdata, event.ydata))
	587	self.canvas.draw_idle()
	588	return
[3bdbfcc]	589
	590	def onMplPick(self, event):
	591	"""
	592	On pick legend
	593	"""
	594	legend = self.legend
[0268aed]	595	if event.artist != legend:
	596	return
	597	# Get the box of the legend.
	598	bbox = self.legend.get_window_extent()
	599	# Get mouse coordinates at time of pick.
	600	self.mouse_x = event.mouseevent.x
	601	self.mouse_y = event.mouseevent.y
	602	# Get legend coordinates at time of pick.
	603	self.legend_x = bbox.xmin
	604	self.legend_y = bbox.ymin
	605	# Indicate we picked up the legend.
	606	self.gotLegend = 1
	607
	608	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	609
	610	def onLegendMotion(self, event):
	611	"""
	612	On legend in motion
	613	"""
	614	ax = event.inaxes
[cee5c78]	615	if ax is None:
[3bdbfcc]	616	return
	617	# Event occurred inside a plotting area
	618	lo_x, hi_x = ax.get_xlim()
	619	lo_y, hi_y = ax.get_ylim()
	620	# How much the mouse moved.
	621	x = mouse_diff_x = self.mouse_x - event.x
	622	y = mouse_diff_y = self.mouse_y - event.y
	623	# Put back inside
	624	if x < lo_x:
	625	x = lo_x
	626	if x > hi_x:
	627	x = hi_x
	628	if y < lo_y:
	629	y = lo_y
	630	if y > hi_y:
	631	y = hi_y
	632	# Move the legend from its previous location by that same amount
	633	loc_in_canvas = self.legend_x - mouse_diff_x, \
	634	self.legend_y - mouse_diff_y
	635	# Transform into legend coordinate system
	636	trans_axes = self.legend.parent.transAxes.inverted()
	637	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	638	self.legend_pos_loc = tuple(loc_in_norm_axes)
	639	self.legend._loc = self.legend_pos_loc
	640	# self.canvas.draw()
	641	self.canvas.draw_idle()
	642
	643	def onMplWheel(self, event):
	644	"""
	645	Process mouse wheel as zoom events
	646	"""
	647	ax = event.inaxes
	648	step = event.step
	649
[cee5c78]	650	if ax is not None:
[3bdbfcc]	651	# Event occurred inside a plotting area
	652	lo, hi = ax.get_xlim()
	653	lo, hi = PlotUtilities.rescale(lo, hi, step,
	654	pt=event.xdata, scale=ax.get_xscale())
	655	if not self.xscale == 'log' or lo > 0:
	656	self._scale_xlo = lo
	657	self._scale_xhi = hi
	658	ax.set_xlim((lo, hi))
	659
	660	lo, hi = ax.get_ylim()
	661	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	662	scale=ax.get_yscale())
	663	if not self.yscale == 'log' or lo > 0:
	664	self._scale_ylo = lo
	665	self._scale_yhi = hi
	666	ax.set_ylim((lo, hi))
	667	else:
	668	# Check if zoom happens in the axes
	669	xdata, ydata = None, None
	670	x, y = event.x, event.y
	671
	672	for ax in self.axes:
	673	insidex, _ = ax.xaxis.contains(event)
	674	if insidex:
	675	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	676	insidey, _ = ax.yaxis.contains(event)
	677	if insidey:
	678	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	679	if xdata is not None:
	680	lo, hi = ax.get_xlim()
	681	lo, hi = PlotUtilities.rescale(lo, hi, step,
	682	bal=xdata, scale=ax.get_xscale())
	683	if not self.xscale == 'log' or lo > 0:
	684	self._scale_xlo = lo
	685	self._scale_xhi = hi
	686	ax.set_xlim((lo, hi))
	687	if ydata is not None:
	688	lo, hi = ax.get_ylim()
	689	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	690	scale=ax.get_yscale())
	691	if not self.yscale == 'log' or lo > 0:
	692	self._scale_ylo = lo
	693	self._scale_yhi = hi
	694	ax.set_ylim((lo, hi))
	695	self.canvas.draw_idle()
	696
[c4e5400]	697
[4992ff2]	698	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	699	def __init__(self, parent=None, quickplot=False):
	700
[4992ff2]	701	QtWidgets.QDialog.__init__(self)
[aadf0af1]	702	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	703	icon = QtGui.QIcon()
	704	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	705	self.setWindowIcon(icon)
	706
[416fa8f]	707

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ fbfc488

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