Plotter.py @ 8353d90

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 8353d90 was 8f83719f, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
More inversion work on details in validation, UI design and such
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	"""
[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
[cb4d219]	51	if value._xunit:
	52	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	53	else:
	54	self.xLabel = "%s"%(value._xaxis)
	55	if value._yunit:
	56	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
	57	else:
	58	self.yLabel = "%s"%(value._yaxis)
	59
	60	if value.scale == 'linear' or value.isSesans:
[749b715]	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:
[cb4d219]	92	marker = dict(PlotUtilities.SHAPES)[marker]
[6fd4e36]	93	except KeyError:
[8f83719f]	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
[fbfc488]	172	self.canvas.draw_idle()
[8cb6cd6]	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()
[f1f3e6a]	316	pass
[27313b7]	317
	318	def onRemoveText(self):
	319	"""
[9290b1a]	320	Remove the most recently added text
[27313b7]	321	"""
[d3ca363]	322	num_text = len(self.textList)
	323	if num_text < 1:
	324	return
	325	txt = self.textList[num_text - 1]
	326	text_remove = txt.get_text()
	327	txt.remove()
	328	self.textList.remove(txt)
	329
	330	self.canvas.draw_idle()
[27313b7]	331
	332	def onSetGraphRange(self):
	333	"""
	334	Show a dialog allowing setting the chart ranges
	335	"""
[d3ca363]	336	# min and max of data
[4992ff2]	337	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	338	x_range = self.setRange.xrange()
	339	y_range = self.setRange.yrange()
	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
	345	def onResetGraphRange(self):
	346	"""
[d3ca363]	347	Resets the chart X and Y ranges to their original values
[27313b7]	348	"""
[d3ca363]	349	x_range = (self.data.x.min(), self.data.x.max())
	350	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	351	if x_range is not None and y_range is not None:
	352	self.ax.set_xlim(x_range)
	353	self.ax.set_ylim(y_range)
	354	self.canvas.draw_idle()
[27313b7]	355
[570a58f9]	356	def onLinearFit(self, id):
[aadf0af1]	357	"""
	358	Creates and displays a simple linear fit for the selected plot
	359	"""
[570a58f9]	360	selected_plot = self.plot_dict[id]
	361
	362	maxrange = (min(selected_plot.x), max(selected_plot.x))
	363	fitrange = self.ax.get_xlim()
	364
	365	fit_dialog = LinearFit(parent=self,
	366	data=selected_plot,
	367	max_range=maxrange,
	368	fit_range=fitrange,
	369	xlabel=self.xLogLabel,
	370	ylabel=self.yLogLabel)
[7969b9c]	371	fit_dialog.updatePlot.connect(self.onFitDisplay)
[4992ff2]	372	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	373	return
[aadf0af1]	374
[87cc73a]	375	def replacePlot(self, id, new_plot):
	376	"""
	377	Remove plot 'id' and add 'new_plot' to the chart.
	378	This effectlvely refreshes the chart with changes to one of its plots
	379	"""
	380	self.removePlot(id)
	381	self.plot(data=new_plot)
	382
[aadf0af1]	383	def onRemovePlot(self, id):
	384	"""
[570a58f9]	385	Responds to the plot delete action
	386	"""
	387	self.removePlot(id)
	388
	389	if len(self.plot_dict) == 0:
	390	# last plot: graph is empty must be the panel must be destroyed
	391	self.parent.close()
	392
	393	def removePlot(self, id):
	394	"""
[aadf0af1]	395	Deletes the selected plot from the chart
	396	"""
[b3e8629]	397	if id not in list(self.plot_dict.keys()):
[570a58f9]	398	return
	399
[aadf0af1]	400	selected_plot = self.plot_dict[id]
	401
	402	plot_dict = copy.deepcopy(self.plot_dict)
	403
[b46f285]	404	# Labels might have been changed
	405	xl = self.ax.xaxis.label.get_text()
	406	yl = self.ax.yaxis.label.get_text()
	407
[aadf0af1]	408	self.plot_dict = {}
	409
	410	plt.cla()
	411	self.ax.cla()
	412
	413	for ids in plot_dict:
	414	if ids != id:
[b46f285]	415	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	416
	417	# Reset the labels
	418	self.ax.set_xlabel(xl)
	419	self.ax.set_ylabel(yl)
	420	self.canvas.draw()
[aadf0af1]	421
	422	def onFreeze(self, id):
	423	"""
	424	Freezes the selected plot to a separate chart
	425	"""
	426	plot = self.plot_dict[id]
	427	self.manager.add_data(data_list=[plot])
	428
[87cc73a]	429	def onModifyPlot(self, id):
[aadf0af1]	430	"""
	431	Allows for MPL modifications to the selected plot
	432	"""
[87cc73a]	433	selected_plot = self.plot_dict[id]
	434
	435	# Old style color - single integer for enum color
	436	# New style color - #hhhhhh
	437	color = selected_plot.custom_color
	438	# marker symbol and size
	439	marker = selected_plot.symbol
	440	marker_size = selected_plot.markersize
	441	# plot name
	442	legend = selected_plot.title
	443
	444	plotPropertiesWidget = PlotProperties(self,
	445	color=color,
	446	marker=marker,
	447	marker_size=marker_size,
	448	legend=legend)
[4992ff2]	449	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	450	# Update Data1d
[0f3c22d]	451	selected_plot.markersize = plotPropertiesWidget.markersize()
	452	selected_plot.custom_color = plotPropertiesWidget.color()
	453	selected_plot.symbol = plotPropertiesWidget.marker()
	454	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	455
	456	# Redraw the plot
	457	self.replacePlot(id, selected_plot)
[aadf0af1]	458
	459	def onToggleHideError(self, id):
	460	"""
	461	Toggles hide error/show error menu item
	462	"""
	463	selected_plot = self.plot_dict[id]
	464	current = selected_plot.hide_error
	465
	466	# Flip the flag
	467	selected_plot.hide_error = not current
	468
	469	plot_dict = copy.deepcopy(self.plot_dict)
	470	self.plot_dict = {}
	471
	472	# Clean the canvas
	473	plt.cla()
	474	self.ax.cla()
	475
	476	# Recreate the plots but reverse the error flag for the current
	477	for ids in plot_dict:
	478	if ids == id:
	479	self.plot(data=plot_dict[ids], hide_error=(not current))
	480	else:
	481	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	482
[6d05e1d]	483	def xyTransform(self, xLabel="", yLabel=""):
	484	"""
	485	Transforms x and y in View and set the scale
	486	"""
[570a58f9]	487	# Transform all the plots on the chart
[b3e8629]	488	for id in list(self.plot_dict.keys()):
[570a58f9]	489	current_plot = self.plot_dict[id]
	490	if current_plot.id == "fit":
	491	self.removePlot(id)
	492	continue
[fed94a2]	493
[570a58f9]	494	new_xlabel, new_ylabel, xscale, yscale =\
	495	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	496	self.xscale = xscale
	497	self.yscale = yscale
[b46f285]	498
[570a58f9]	499	# Plot the updated chart
	500	self.removePlot(id)
[b46f285]	501
	502	# This assignment will wrap the label in Latex "$"
	503	self.xLabel = new_xlabel
	504	self.yLabel = new_ylabel
[a66ff280]	505	# Directly overwrite the data to avoid label reassignment
	506	self._data = current_plot
[87cc73a]	507	self.plot()
[570a58f9]	508
	509	pass # debug hook
	510
[fed94a2]	511	def onFitDisplay(self, fit_data):
	512	"""
	513	Add a linear fitting line to the chart
	514	"""
	515	# Create new data structure with fitting result
	516	tempx = fit_data[0]
	517	tempy = fit_data[1]
	518	self.fit_result.x = []
	519	self.fit_result.y = []
	520	self.fit_result.x = tempx
	521	self.fit_result.y = tempy
	522	self.fit_result.dx = None
	523	self.fit_result.dy = None
	524
	525	#Remove another Fit, if exists
	526	self.removePlot("fit")
	527
	528	self.fit_result.reset_view()
	529	#self.offset_graph()
	530
	531	# Set plot properties
	532	self.fit_result.id = 'fit'
	533	self.fit_result.title = 'Fit'
	534	self.fit_result.name = 'Fit'
	535
	536	# Plot the line
[87cc73a]	537	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	538
[3bdbfcc]	539	def onMplMouseDown(self, event):
	540	"""
	541	Left button down and ready to drag
	542	"""
	543	# Check that the LEFT button was pressed
[0268aed]	544	if event.button != 1:
	545	return
	546
	547	self.leftdown = True
	548	for text in self.textList:
	549	if text.contains(event)[0]: # If user has clicked on text
	550	self.selectedText = text
	551	return
	552	if event.inaxes is None:
	553	return
	554	try:
	555	self.x_click = float(event.xdata) # / size_x
	556	self.y_click = float(event.ydata) # / size_y
	557	except:
	558	self.position = None
[3bdbfcc]	559
	560	def onMplMouseUp(self, event):
	561	"""
	562	Set the data coordinates of the click
	563	"""
	564	self.x_click = event.xdata
	565	self.y_click = event.ydata
	566
	567	# Check that the LEFT button was released
	568	if event.button == 1:
	569	self.leftdown = False
	570	self.selectedText = None
	571
	572	#release the legend
	573	if self.gotLegend == 1:
	574	self.gotLegend = 0
	575
	576	def onMplMouseMotion(self, event):
	577	"""
	578	Check if the left button is press and the mouse in moving.
	579	Compute delta for x and y coordinates and then perform the drag
	580	"""
	581	if self.gotLegend == 1 and self.leftdown:
	582	self.onLegendMotion(event)
	583	return
	584
[0268aed]	585	#if self.leftdown and self.selectedText is not None:
[9f25bce]	586	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	587	return
[0268aed]	588	# User has clicked on text and is dragging
[9f25bce]	589	if event.inaxes is None:
[0268aed]	590	# User has dragged outside of axes
	591	self.selectedText = None
	592	else:
	593	# Only move text if mouse is within axes
	594	self.selectedText.set_position((event.xdata, event.ydata))
	595	self.canvas.draw_idle()
	596	return
[3bdbfcc]	597
	598	def onMplPick(self, event):
	599	"""
	600	On pick legend
	601	"""
	602	legend = self.legend
[0268aed]	603	if event.artist != legend:
	604	return
	605	# Get the box of the legend.
	606	bbox = self.legend.get_window_extent()
	607	# Get mouse coordinates at time of pick.
	608	self.mouse_x = event.mouseevent.x
	609	self.mouse_y = event.mouseevent.y
	610	# Get legend coordinates at time of pick.
	611	self.legend_x = bbox.xmin
	612	self.legend_y = bbox.ymin
	613	# Indicate we picked up the legend.
	614	self.gotLegend = 1
	615
	616	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	617
	618	def onLegendMotion(self, event):
	619	"""
	620	On legend in motion
	621	"""
	622	ax = event.inaxes
[cee5c78]	623	if ax is None:
[3bdbfcc]	624	return
	625	# Event occurred inside a plotting area
	626	lo_x, hi_x = ax.get_xlim()
	627	lo_y, hi_y = ax.get_ylim()
	628	# How much the mouse moved.
	629	x = mouse_diff_x = self.mouse_x - event.x
	630	y = mouse_diff_y = self.mouse_y - event.y
	631	# Put back inside
	632	if x < lo_x:
	633	x = lo_x
	634	if x > hi_x:
	635	x = hi_x
	636	if y < lo_y:
	637	y = lo_y
	638	if y > hi_y:
	639	y = hi_y
	640	# Move the legend from its previous location by that same amount
	641	loc_in_canvas = self.legend_x - mouse_diff_x, \
	642	self.legend_y - mouse_diff_y
	643	# Transform into legend coordinate system
	644	trans_axes = self.legend.parent.transAxes.inverted()
	645	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	646	self.legend_pos_loc = tuple(loc_in_norm_axes)
	647	self.legend._loc = self.legend_pos_loc
	648	# self.canvas.draw()
	649	self.canvas.draw_idle()
	650
	651	def onMplWheel(self, event):
	652	"""
	653	Process mouse wheel as zoom events
	654	"""
	655	ax = event.inaxes
	656	step = event.step
	657
[cee5c78]	658	if ax is not None:
[3bdbfcc]	659	# Event occurred inside a plotting area
	660	lo, hi = ax.get_xlim()
	661	lo, hi = PlotUtilities.rescale(lo, hi, step,
	662	pt=event.xdata, scale=ax.get_xscale())
	663	if not self.xscale == 'log' or lo > 0:
	664	self._scale_xlo = lo
	665	self._scale_xhi = hi
	666	ax.set_xlim((lo, hi))
	667
	668	lo, hi = ax.get_ylim()
	669	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	670	scale=ax.get_yscale())
	671	if not self.yscale == 'log' or lo > 0:
	672	self._scale_ylo = lo
	673	self._scale_yhi = hi
	674	ax.set_ylim((lo, hi))
	675	else:
	676	# Check if zoom happens in the axes
	677	xdata, ydata = None, None
	678	x, y = event.x, event.y
	679
	680	for ax in self.axes:
	681	insidex, _ = ax.xaxis.contains(event)
	682	if insidex:
	683	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	684	insidey, _ = ax.yaxis.contains(event)
	685	if insidey:
	686	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	687	if xdata is not None:
	688	lo, hi = ax.get_xlim()
	689	lo, hi = PlotUtilities.rescale(lo, hi, step,
	690	bal=xdata, scale=ax.get_xscale())
	691	if not self.xscale == 'log' or lo > 0:
	692	self._scale_xlo = lo
	693	self._scale_xhi = hi
	694	ax.set_xlim((lo, hi))
	695	if ydata is not None:
	696	lo, hi = ax.get_ylim()
	697	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	698	scale=ax.get_yscale())
	699	if not self.yscale == 'log' or lo > 0:
	700	self._scale_ylo = lo
	701	self._scale_yhi = hi
	702	ax.set_ylim((lo, hi))
	703	self.canvas.draw_idle()
	704
[c4e5400]	705
[4992ff2]	706	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	707	def __init__(self, parent=None, quickplot=False):
	708
[4992ff2]	709	QtWidgets.QDialog.__init__(self)
[aadf0af1]	710	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	711	icon = QtGui.QIcon()
	712	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	713	self.setWindowIcon(icon)
	714
[416fa8f]	715

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ 8353d90

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