Plotter.py @ 50cafe7

ESS_GUIESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalc

Last change on this file since 50cafe7 was 2a174d4, checked in by ibressler, 6 years ago
PlotterWidget?: removed unused/orphaned import of logging
Property mode set to `100644`
File size: 26.0 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
[0231f93]	7	import matplotlib as mpl
[facf4ca]	8	import numpy as np
[9290b1a]	9	from matplotlib.font_manager import FontProperties
[dc5ef15]	10	from sas.qtgui.Plotting.PlotterData import Data1D
[83eb5208]	11	from sas.qtgui.Plotting.PlotterBase import PlotterBase
	12	from sas.qtgui.Plotting.AddText import AddText
	13	from sas.qtgui.Plotting.SetGraphRange import SetGraphRange
	14	from sas.qtgui.Plotting.LinearFit import LinearFit
	15	from sas.qtgui.Plotting.PlotProperties import PlotProperties
[bb57068]	16	from sas.qtgui.Plotting.ScaleProperties import ScaleProperties
[dc5ef15]	17
	18	import sas.qtgui.Utilities.GuiUtils as GuiUtils
[83eb5208]	19	import sas.qtgui.Plotting.PlotUtilities as PlotUtilities
[8cb6cd6]	20
[416fa8f]	21	class PlotterWidget(PlotterBase):
[c4e5400]	22	"""
	23	1D Plot widget for use with a QDialog
[fecfe28]	24	"""
[416fa8f]	25	def __init__(self, parent=None, manager=None, quickplot=False):
	26	super(PlotterWidget, self).__init__(parent, manager=manager, quickplot=quickplot)
[570a58f9]	27
[27313b7]	28	self.parent = parent
[8cb6cd6]	29
[aadf0af1]	30	# Dictionary of {plot_id:Data1d}
	31	self.plot_dict = {}
[c2f3ca2]	32	# Dictionaty of {plot_id:line}
[aadf0af1]	33
[c2f3ca2]	34	self.plot_lines = {}
[fed94a2]	35	# Window for text add
	36	self.addText = AddText(self)
[aadf0af1]	37
[fed94a2]	38	# Log-ness of the axes
[570a58f9]	39	self.xLogLabel = "log10(x)"
	40	self.yLogLabel = "log10(y)"
	41
	42	# Data container for the linear fit
[fed94a2]	43	self.fit_result = Data1D(x=[], y=[], dy=None)
	44	self.fit_result.symbol = 13
	45	self.fit_result.name = "Fit"
[570a58f9]	46
[31c5b58]	47	@property
	48	def data(self):
	49	return self._data
	50
	51	@data.setter
	52	def data(self, value):
[8cb6cd6]	53	""" data setter """
[31c5b58]	54	self._data = value
[cb4d219]	55	if value._xunit:
	56	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	57	else:
	58	self.xLabel = "%s"%(value._xaxis)
	59	if value._yunit:
	60	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
	61	else:
	62	self.yLabel = "%s"%(value._yaxis)
	63
	64	if value.scale == 'linear' or value.isSesans:
[749b715]	65	self.xscale = 'linear'
	66	self.yscale = 'linear'
[aadf0af1]	67	self.title(title=value.name)
[8cb6cd6]	68
[04ac604]	69	def plot(self, data=None, color=None, marker=None, hide_error=False, transform=True):
[8cb6cd6]	70	"""
[aadf0af1]	71	Add a new plot of self._data to the chart.
[8cb6cd6]	72	"""
[9290b1a]	73	# Data1D
	74	if isinstance(data, Data1D):
	75	self.data = data
	76	assert(self._data)
	77
[87cc73a]	78	is_fit = (self.data.id=="fit")
[570a58f9]	79
[685e0e3]	80	if not is_fit:
	81	# make sure we have some function to operate on
	82	if self.data.xtransform is None:
	83	self.data.xtransform = 'log10(x)'
	84	if self.data.ytransform is None:
	85	self.data.ytransform = 'log10(y)'
	86
	87	# Transform data if required.
[04ac604]	88	if transform and (self.data.xtransform is not None or self.data.ytransform is not None):
[685e0e3]	89	_, _, xscale, yscale = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	90	if xscale != 'log':
	91	self.xscale = xscale
	92	if yscale != 'log':
	93	self.yscale = yscale
	94
	95	# Redefine the Scale properties dialog
	96	self.properties = ScaleProperties(self,
	97	init_scale_x=self.data.xtransform,
	98	init_scale_y=self.data.ytransform)
[f182f93]	99
[87cc73a]	100	# Shortcuts
[ef01be4]	101	ax = self.ax
[87cc73a]	102	x = self._data.view.x
	103	y = self._data.view.y
	104
	105	# Marker symbol. Passed marker is one of matplotlib.markers characters
	106	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	107	if marker is None:
	108	marker = self.data.symbol
[6fd4e36]	109	# Try name first
	110	try:
[cb4d219]	111	marker = dict(PlotUtilities.SHAPES)[marker]
[6fd4e36]	112	except KeyError:
[8f83719f]	113	marker = list(PlotUtilities.SHAPES.values())[marker]
[87cc73a]	114
[6fd4e36]	115	assert marker is not None
[87cc73a]	116	# Plot name
[b789967]	117	if self.data.title:
	118	self.title(title=self.data.title)
	119	else:
	120	self.title(title=self.data.name)
[87cc73a]	121
	122	# Error marker toggle
	123	if hide_error is None:
	124	hide_error = self.data.hide_error
	125
	126	# Plot color
	127	if color is None:
	128	color = self.data.custom_color
	129
	130	color = PlotUtilities.getValidColor(color)
[0231f93]	131	self.data.custom_color = color
[87cc73a]	132
	133	markersize = self._data.markersize
	134
[facf4ca]	135	# Include scaling (log vs. linear)
[8274471e]	136	ax.set_xscale(self.xscale, nonposx='clip')
[facf4ca]	137	ax.set_yscale(self.yscale, nonposy='clip')
	138
	139	# define the ranges
	140	self.setRange = SetGraphRange(parent=self,
	141	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	142
[239214f]	143	# Draw non-standard markers
	144	l_width = markersize * 0.4
	145	if marker == '-' or marker == '--':
	146	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	147	linestyle=marker, label=self._title, zorder=10)[0]
	148
	149	elif marker == 'vline':
	150	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	151	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	152	linestyle='-', label=self._title, lw=l_width, zorder=1)
	153
	154	elif marker == 'step':
	155	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	156	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	157
[c4e5400]	158	else:
[87cc73a]	159	# plot data with/without errorbars
	160	if hide_error:
	161	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	162	linestyle='', label=self._title, picker=True)
	163	else:
[facf4ca]	164	dy = self._data.view.dy
	165	# Convert tuple (lo,hi) to array [(x-lo),(hi-x)]
	166	if dy is not None and type(dy) == type(()):
	167	dy = np.vstack((y - dy[0], dy[1] - y)).transpose()
	168
[87cc73a]	169	line = ax.errorbar(x, y,
[facf4ca]	170	yerr=dy,
	171	xerr=None,
[87cc73a]	172	capsize=2, linestyle='',
	173	barsabove=False,
	174	color=color,
	175	marker=marker,
	176	markersize=markersize,
	177	lolims=False, uplims=False,
	178	xlolims=False, xuplims=False,
	179	label=self._title,
[facf4ca]	180	zorder=1,
[87cc73a]	181	picker=True)
[8cb6cd6]	182
[aadf0af1]	183	# Update the list of data sets (plots) in chart
	184	self.plot_dict[self._data.id] = self.data
	185
[c2f3ca2]	186	self.plot_lines[self._data.id] = line
	187
[8cb6cd6]	188	# Now add the legend with some customizations.
[f0bb711]	189
[42787fb]	190	if self.showLegend:
	191	self.legend = ax.legend(loc='upper right', shadow=True)
	192	if self.legend:
	193	self.legend.set_picker(True)
[8cb6cd6]	194
[6d05e1d]	195	# Current labels for axes
[570a58f9]	196	if self.y_label and not is_fit:
	197	ax.set_ylabel(self.y_label)
	198	if self.x_label and not is_fit:
	199	ax.set_xlabel(self.x_label)
[6d05e1d]	200
[8cb6cd6]	201	# refresh canvas
[c2f3ca2]	202	self.canvas.draw()
[b764ae5]	203	# This is an important processEvent.
	204	# This allows charts to be properly updated in order
	205	# of plots being applied.
	206	QtWidgets.QApplication.processEvents()
[8cb6cd6]	207
[aadf0af1]	208	def createContextMenu(self):
[c4e5400]	209	"""
	210	Define common context menu and associated actions for the MPL widget
	211	"""
	212	self.defaultContextMenu()
	213
[aadf0af1]	214	# Separate plots
	215	self.addPlotsToContextMenu()
	216
[27313b7]	217	# Additional menu items
	218	self.contextMenu.addSeparator()
	219	self.actionAddText = self.contextMenu.addAction("Add Text")
	220	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	221	self.contextMenu.addSeparator()
	222	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	223	self.contextMenu.addSeparator()
	224	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	225	self.actionResetGraphRange =\
	226	self.contextMenu.addAction("Reset Graph Range")
	227	# Add the title change for dialogs
[aadf0af1]	228	#if self.parent:
	229	self.contextMenu.addSeparator()
	230	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	231
	232	# Define the callbacks
	233	self.actionAddText.triggered.connect(self.onAddText)
	234	self.actionRemoveText.triggered.connect(self.onRemoveText)
	235	self.actionChangeScale.triggered.connect(self.onScaleChange)
	236	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	237	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	238	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	239
[aadf0af1]	240	def addPlotsToContextMenu(self):
	241	"""
	242	Adds operations on all plotted sets of data to the context menu
	243	"""
[b3e8629]	244	for id in list(self.plot_dict.keys()):
[aadf0af1]	245	plot = self.plot_dict[id]
[b789967]	246
	247	name = plot.name if plot.name else plot.title
[aadf0af1]	248	plot_menu = self.contextMenu.addMenu('&%s' % name)
	249
	250	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	251	self.actionDataInfo.triggered.connect(
	252	functools.partial(self.onDataInfo, plot))
	253
	254	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	255	self.actionSavePointsAsFile.triggered.connect(
	256	functools.partial(self.onSavePoints, plot))
	257	plot_menu.addSeparator()
	258
	259	if plot.id != 'fit':
	260	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	261	self.actionLinearFit.triggered.connect(
	262	functools.partial(self.onLinearFit, id))
[aadf0af1]	263	plot_menu.addSeparator()
	264
	265	self.actionRemovePlot = plot_menu.addAction("Remove")
	266	self.actionRemovePlot.triggered.connect(
	267	functools.partial(self.onRemovePlot, id))
	268
	269	if not plot.is_data:
	270	self.actionFreeze = plot_menu.addAction('&Freeze')
	271	self.actionFreeze.triggered.connect(
	272	functools.partial(self.onFreeze, id))
	273	plot_menu.addSeparator()
	274
	275	if plot.is_data:
	276	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	277	if plot.dy is not None and plot.dy != []:
	278	if plot.hide_error:
	279	self.actionHideError.setText('Show Error Bar')
	280	else:
	281	self.actionHideError.setEnabled(False)
	282	self.actionHideError.triggered.connect(
	283	functools.partial(self.onToggleHideError, id))
	284	plot_menu.addSeparator()
	285
	286	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	287	self.actionModifyPlot.triggered.connect(
	288	functools.partial(self.onModifyPlot, id))
[aadf0af1]	289
	290	def createContextMenuQuick(self):
[6d05e1d]	291	"""
	292	Define context menu and associated actions for the quickplot MPL widget
	293	"""
[c4e5400]	294	# Default actions
	295	self.defaultContextMenu()
	296
	297	# Additional actions
[6d05e1d]	298	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	299	self.contextMenu.addSeparator()
	300	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	301
	302	# Define the callbacks
	303	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	304	self.actionChangeScale.triggered.connect(self.onScaleChange)
	305
	306	def onScaleChange(self):
	307	"""
	308	Show a dialog allowing axes rescaling
	309	"""
[4992ff2]	310	if self.properties.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	311	self.xLogLabel, self.yLogLabel = self.properties.getValues()
[bb57068]	312	self.data.xtransform = self.xLogLabel
	313	self.data.ytransform = self.yLogLabel
[570a58f9]	314	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	315
[27313b7]	316	def onAddText(self):
	317	"""
	318	Show a dialog allowing adding custom text to the chart
	319	"""
[eb1a386]	320	if self.addText.exec_() != QtWidgets.QDialog.Accepted:
	321	return
	322
	323	# Retrieve the new text, its font and color
	324	extra_text = self.addText.text()
	325	extra_font = self.addText.font()
	326	extra_color = self.addText.color()
	327
	328	# Place the text on the screen at the click location
	329	pos_x = self.x_click
	330	pos_y = self.y_click
	331
	332	# Map QFont onto MPL font
	333	mpl_font = FontProperties()
	334	mpl_font.set_size(int(extra_font.pointSize()))
	335	mpl_font.set_family(str(extra_font.family()))
	336	mpl_font.set_weight(int(extra_font.weight()))
	337	# MPL style names
	338	styles = ['normal', 'italic', 'oblique']
	339	# QFont::Style maps directly onto the above
	340	try:
	341	mpl_font.set_style(styles[extra_font.style()])
	342	except:
	343	pass
	344
	345	if len(extra_text) > 0:
	346	new_text = self.ax.text(pos_x,
	347	pos_y,
	348	extra_text,
	349	color=extra_color,
	350	fontproperties=mpl_font)
	351
	352	# Update the list of annotations
	353	self.textList.append(new_text)
	354	self.canvas.draw()
[27313b7]	355
	356	def onRemoveText(self):
	357	"""
[9290b1a]	358	Remove the most recently added text
[27313b7]	359	"""
[d3ca363]	360	num_text = len(self.textList)
	361	if num_text < 1:
	362	return
	363	txt = self.textList[num_text - 1]
	364	text_remove = txt.get_text()
[eb1a386]	365	try:
	366	txt.remove()
	367	except ValueError:
	368	# Text got already deleted somehow
	369	pass
[d3ca363]	370	self.textList.remove(txt)
	371
	372	self.canvas.draw_idle()
[27313b7]	373
	374	def onSetGraphRange(self):
	375	"""
	376	Show a dialog allowing setting the chart ranges
	377	"""
[d3ca363]	378	# min and max of data
[4992ff2]	379	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	380	x_range = self.setRange.xrange()
	381	y_range = self.setRange.yrange()
	382	if x_range is not None and y_range is not None:
	383	self.ax.set_xlim(x_range)
	384	self.ax.set_ylim(y_range)
	385	self.canvas.draw_idle()
[27313b7]	386
	387	def onResetGraphRange(self):
	388	"""
[d3ca363]	389	Resets the chart X and Y ranges to their original values
[27313b7]	390	"""
[d3ca363]	391	x_range = (self.data.x.min(), self.data.x.max())
	392	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	393	if x_range is not None and y_range is not None:
	394	self.ax.set_xlim(x_range)
	395	self.ax.set_ylim(y_range)
	396	self.canvas.draw_idle()
[27313b7]	397
[570a58f9]	398	def onLinearFit(self, id):
[aadf0af1]	399	"""
	400	Creates and displays a simple linear fit for the selected plot
	401	"""
[570a58f9]	402	selected_plot = self.plot_dict[id]
	403
	404	maxrange = (min(selected_plot.x), max(selected_plot.x))
	405	fitrange = self.ax.get_xlim()
	406
	407	fit_dialog = LinearFit(parent=self,
	408	data=selected_plot,
	409	max_range=maxrange,
	410	fit_range=fitrange,
	411	xlabel=self.xLogLabel,
	412	ylabel=self.yLogLabel)
[7969b9c]	413	fit_dialog.updatePlot.connect(self.onFitDisplay)
[4992ff2]	414	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	415	return
[aadf0af1]	416
[87cc73a]	417	def replacePlot(self, id, new_plot):
	418	"""
	419	Remove plot 'id' and add 'new_plot' to the chart.
	420	This effectlvely refreshes the chart with changes to one of its plots
	421	"""
	422	self.removePlot(id)
	423	self.plot(data=new_plot)
	424
[aadf0af1]	425	def onRemovePlot(self, id):
	426	"""
[570a58f9]	427	Responds to the plot delete action
	428	"""
	429	self.removePlot(id)
	430
	431	if len(self.plot_dict) == 0:
	432	# last plot: graph is empty must be the panel must be destroyed
	433	self.parent.close()
	434
	435	def removePlot(self, id):
	436	"""
[aadf0af1]	437	Deletes the selected plot from the chart
	438	"""
[b3e8629]	439	if id not in list(self.plot_dict.keys()):
[570a58f9]	440	return
	441
[aadf0af1]	442	selected_plot = self.plot_dict[id]
	443
	444	plot_dict = copy.deepcopy(self.plot_dict)
	445
[b46f285]	446	# Labels might have been changed
	447	xl = self.ax.xaxis.label.get_text()
	448	yl = self.ax.yaxis.label.get_text()
	449
[aadf0af1]	450	self.plot_dict = {}
	451
[0231f93]	452	mpl.pyplot.cla()
[aadf0af1]	453	self.ax.cla()
	454
	455	for ids in plot_dict:
	456	if ids != id:
[b46f285]	457	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	458
	459	# Reset the labels
	460	self.ax.set_xlabel(xl)
	461	self.ax.set_ylabel(yl)
	462	self.canvas.draw()
[aadf0af1]	463
	464	def onFreeze(self, id):
	465	"""
	466	Freezes the selected plot to a separate chart
	467	"""
	468	plot = self.plot_dict[id]
	469	self.manager.add_data(data_list=[plot])
	470
[87cc73a]	471	def onModifyPlot(self, id):
[aadf0af1]	472	"""
	473	Allows for MPL modifications to the selected plot
	474	"""
[87cc73a]	475	selected_plot = self.plot_dict[id]
[c2f3ca2]	476	selected_line = self.plot_lines[id]
[87cc73a]	477	# Old style color - single integer for enum color
	478	# New style color - #hhhhhh
	479	color = selected_plot.custom_color
	480	# marker symbol and size
	481	marker = selected_plot.symbol
	482	marker_size = selected_plot.markersize
	483	# plot name
	484	legend = selected_plot.title
	485
	486	plotPropertiesWidget = PlotProperties(self,
	487	color=color,
	488	marker=marker,
	489	marker_size=marker_size,
	490	legend=legend)
[4992ff2]	491	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	492	# Update Data1d
[0f3c22d]	493	selected_plot.markersize = plotPropertiesWidget.markersize()
	494	selected_plot.custom_color = plotPropertiesWidget.color()
	495	selected_plot.symbol = plotPropertiesWidget.marker()
	496	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	497
	498	# Redraw the plot
	499	self.replacePlot(id, selected_plot)
[aadf0af1]	500
	501	def onToggleHideError(self, id):
	502	"""
	503	Toggles hide error/show error menu item
	504	"""
	505	selected_plot = self.plot_dict[id]
	506	current = selected_plot.hide_error
	507
	508	# Flip the flag
	509	selected_plot.hide_error = not current
	510
	511	plot_dict = copy.deepcopy(self.plot_dict)
	512	self.plot_dict = {}
	513
	514	# Clean the canvas
[0231f93]	515	mpl.pyplot.cla()
[aadf0af1]	516	self.ax.cla()
	517
	518	# Recreate the plots but reverse the error flag for the current
	519	for ids in plot_dict:
	520	if ids == id:
	521	self.plot(data=plot_dict[ids], hide_error=(not current))
	522	else:
	523	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	524
[6d05e1d]	525	def xyTransform(self, xLabel="", yLabel=""):
	526	"""
	527	Transforms x and y in View and set the scale
	528	"""
[570a58f9]	529	# Transform all the plots on the chart
[b3e8629]	530	for id in list(self.plot_dict.keys()):
[570a58f9]	531	current_plot = self.plot_dict[id]
	532	if current_plot.id == "fit":
	533	self.removePlot(id)
	534	continue
[fed94a2]	535
[570a58f9]	536	new_xlabel, new_ylabel, xscale, yscale =\
	537	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	538	self.xscale = xscale
	539	self.yscale = yscale
[b46f285]	540
[570a58f9]	541	# Plot the updated chart
	542	self.removePlot(id)
[b46f285]	543
	544	# This assignment will wrap the label in Latex "$"
	545	self.xLabel = new_xlabel
	546	self.yLabel = new_ylabel
[04ac604]	547
	548	self.plot(data=current_plot, transform=False)
[570a58f9]	549
	550	pass # debug hook
	551
[fed94a2]	552	def onFitDisplay(self, fit_data):
	553	"""
	554	Add a linear fitting line to the chart
	555	"""
	556	# Create new data structure with fitting result
	557	tempx = fit_data[0]
	558	tempy = fit_data[1]
	559	self.fit_result.x = []
	560	self.fit_result.y = []
	561	self.fit_result.x = tempx
	562	self.fit_result.y = tempy
	563	self.fit_result.dx = None
	564	self.fit_result.dy = None
	565
	566	#Remove another Fit, if exists
	567	self.removePlot("fit")
	568
	569	self.fit_result.reset_view()
	570	#self.offset_graph()
	571
	572	# Set plot properties
	573	self.fit_result.id = 'fit'
	574	self.fit_result.title = 'Fit'
	575	self.fit_result.name = 'Fit'
	576
	577	# Plot the line
[87cc73a]	578	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	579
[3bdbfcc]	580	def onMplMouseDown(self, event):
	581	"""
	582	Left button down and ready to drag
	583	"""
	584	# Check that the LEFT button was pressed
[0268aed]	585	if event.button != 1:
	586	return
	587
	588	self.leftdown = True
	589	for text in self.textList:
	590	if text.contains(event)[0]: # If user has clicked on text
	591	self.selectedText = text
	592	return
	593	if event.inaxes is None:
	594	return
	595	try:
	596	self.x_click = float(event.xdata) # / size_x
	597	self.y_click = float(event.ydata) # / size_y
	598	except:
	599	self.position = None
[3bdbfcc]	600
	601	def onMplMouseUp(self, event):
	602	"""
	603	Set the data coordinates of the click
	604	"""
	605	self.x_click = event.xdata
	606	self.y_click = event.ydata
	607
	608	# Check that the LEFT button was released
	609	if event.button == 1:
	610	self.leftdown = False
	611	self.selectedText = None
	612
	613	#release the legend
	614	if self.gotLegend == 1:
	615	self.gotLegend = 0
	616
	617	def onMplMouseMotion(self, event):
	618	"""
	619	Check if the left button is press and the mouse in moving.
	620	Compute delta for x and y coordinates and then perform the drag
	621	"""
	622	if self.gotLegend == 1 and self.leftdown:
	623	self.onLegendMotion(event)
	624	return
	625
[0268aed]	626	#if self.leftdown and self.selectedText is not None:
[9f25bce]	627	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	628	return
[0268aed]	629	# User has clicked on text and is dragging
[9f25bce]	630	if event.inaxes is None:
[0268aed]	631	# User has dragged outside of axes
	632	self.selectedText = None
	633	else:
	634	# Only move text if mouse is within axes
	635	self.selectedText.set_position((event.xdata, event.ydata))
	636	self.canvas.draw_idle()
	637	return
[3bdbfcc]	638
	639	def onMplPick(self, event):
	640	"""
	641	On pick legend
	642	"""
	643	legend = self.legend
[0268aed]	644	if event.artist != legend:
	645	return
	646	# Get the box of the legend.
	647	bbox = self.legend.get_window_extent()
	648	# Get mouse coordinates at time of pick.
	649	self.mouse_x = event.mouseevent.x
	650	self.mouse_y = event.mouseevent.y
	651	# Get legend coordinates at time of pick.
	652	self.legend_x = bbox.xmin
	653	self.legend_y = bbox.ymin
	654	# Indicate we picked up the legend.
	655	self.gotLegend = 1
	656
	657	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	658
	659	def onLegendMotion(self, event):
	660	"""
	661	On legend in motion
	662	"""
	663	ax = event.inaxes
[cee5c78]	664	if ax is None:
[3bdbfcc]	665	return
	666	# Event occurred inside a plotting area
	667	lo_x, hi_x = ax.get_xlim()
	668	lo_y, hi_y = ax.get_ylim()
	669	# How much the mouse moved.
	670	x = mouse_diff_x = self.mouse_x - event.x
	671	y = mouse_diff_y = self.mouse_y - event.y
	672	# Put back inside
	673	if x < lo_x:
	674	x = lo_x
	675	if x > hi_x:
	676	x = hi_x
	677	if y < lo_y:
	678	y = lo_y
	679	if y > hi_y:
	680	y = hi_y
	681	# Move the legend from its previous location by that same amount
	682	loc_in_canvas = self.legend_x - mouse_diff_x, \
	683	self.legend_y - mouse_diff_y
	684	# Transform into legend coordinate system
	685	trans_axes = self.legend.parent.transAxes.inverted()
	686	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	687	self.legend_pos_loc = tuple(loc_in_norm_axes)
	688	self.legend._loc = self.legend_pos_loc
	689	# self.canvas.draw()
	690	self.canvas.draw_idle()
	691
	692	def onMplWheel(self, event):
	693	"""
	694	Process mouse wheel as zoom events
	695	"""
	696	ax = event.inaxes
	697	step = event.step
	698
[cee5c78]	699	if ax is not None:
[3bdbfcc]	700	# Event occurred inside a plotting area
	701	lo, hi = ax.get_xlim()
	702	lo, hi = PlotUtilities.rescale(lo, hi, step,
	703	pt=event.xdata, scale=ax.get_xscale())
	704	if not self.xscale == 'log' or lo > 0:
	705	self._scale_xlo = lo
	706	self._scale_xhi = hi
	707	ax.set_xlim((lo, hi))
	708
	709	lo, hi = ax.get_ylim()
	710	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	711	scale=ax.get_yscale())
	712	if not self.yscale == 'log' or lo > 0:
	713	self._scale_ylo = lo
	714	self._scale_yhi = hi
	715	ax.set_ylim((lo, hi))
	716	else:
	717	# Check if zoom happens in the axes
	718	xdata, ydata = None, None
	719	x, y = event.x, event.y
	720
	721	for ax in self.axes:
	722	insidex, _ = ax.xaxis.contains(event)
	723	if insidex:
	724	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	725	insidey, _ = ax.yaxis.contains(event)
	726	if insidey:
	727	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	728	if xdata is not None:
	729	lo, hi = ax.get_xlim()
	730	lo, hi = PlotUtilities.rescale(lo, hi, step,
	731	bal=xdata, scale=ax.get_xscale())
	732	if not self.xscale == 'log' or lo > 0:
	733	self._scale_xlo = lo
	734	self._scale_xhi = hi
	735	ax.set_xlim((lo, hi))
	736	if ydata is not None:
	737	lo, hi = ax.get_ylim()
	738	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	739	scale=ax.get_yscale())
	740	if not self.yscale == 'log' or lo > 0:
	741	self._scale_ylo = lo
	742	self._scale_yhi = hi
	743	ax.set_ylim((lo, hi))
	744	self.canvas.draw_idle()
	745
[c4e5400]	746
[4992ff2]	747	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	748	def __init__(self, parent=None, quickplot=False):
	749
[4992ff2]	750	QtWidgets.QDialog.__init__(self)
[aadf0af1]	751	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	752	icon = QtGui.QIcon()
	753	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	754	self.setWindowIcon(icon)
	755
[416fa8f]	756

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ 50cafe7

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