Plotter.py @ f159d1b

Last change on this file since f159d1b was f0bb711, checked in by celinedurniak <celine.durniak@…>, 7 years ago
Implemented comments from review for Data Operation Panel (ESS-GUI-SasView?-245)
Property mode set to `100644`
File size: 24.3 KB

Rev	Line
[8cb6cd6]	1	from PyQt4 import QtGui
[aadf0af1]	2	from PyQt4 import QtCore
	3	import functools
	4	import copy
[8cb6cd6]	5	import matplotlib.pyplot as plt
[9290b1a]	6	from matplotlib.font_manager import FontProperties
[dc5ef15]	7	from sas.qtgui.Plotting.PlotterData import Data1D
[83eb5208]	8	from sas.qtgui.Plotting.PlotterBase import PlotterBase
	9	from sas.qtgui.Plotting.AddText import AddText
	10	from sas.qtgui.Plotting.SetGraphRange import SetGraphRange
	11	from sas.qtgui.Plotting.LinearFit import LinearFit
	12	from sas.qtgui.Plotting.PlotProperties import PlotProperties
[dc5ef15]	13
	14	import sas.qtgui.Utilities.GuiUtils as GuiUtils
[83eb5208]	15	import sas.qtgui.Plotting.PlotUtilities as PlotUtilities
[8cb6cd6]	16
[416fa8f]	17	class PlotterWidget(PlotterBase):
[c4e5400]	18	"""
	19	1D Plot widget for use with a QDialog
[fecfe28]	20	"""
[416fa8f]	21	def __init__(self, parent=None, manager=None, quickplot=False):
	22	super(PlotterWidget, self).__init__(parent, manager=manager, quickplot=quickplot)
[570a58f9]	23
[27313b7]	24	self.parent = parent
[8cb6cd6]	25
[aadf0af1]	26	# Dictionary of {plot_id:Data1d}
	27	self.plot_dict = {}
	28
[fed94a2]	29	# Window for text add
	30	self.addText = AddText(self)
[aadf0af1]	31
[fed94a2]	32	# Log-ness of the axes
[570a58f9]	33	self.xLogLabel = "log10(x)"
	34	self.yLogLabel = "log10(y)"
	35
	36	# Data container for the linear fit
[fed94a2]	37	self.fit_result = Data1D(x=[], y=[], dy=None)
	38	self.fit_result.symbol = 13
	39	self.fit_result.name = "Fit"
[570a58f9]	40
	41	# Add a slot for receiving update signal from LinearFit
[fed94a2]	42	# NEW style signals
[570a58f9]	43	#self.updatePlot = QtCore.pyqtSignal(tuple)
[fed94a2]	44	# self.updatePlot.connect(self.onFitDisplay)
	45	# OLD style signals
[570a58f9]	46	QtCore.QObject.connect(self, QtCore.SIGNAL('updatePlot'), self.onFitDisplay)
	47
[31c5b58]	48	@property
	49	def data(self):
	50	return self._data
	51
	52	@data.setter
	53	def data(self, value):
[8cb6cd6]	54	""" data setter """
[31c5b58]	55	self._data = value
[6d05e1d]	56	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	57	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
[aadf0af1]	58	self.title(title=value.name)
[8cb6cd6]	59
[f0bb711]	60	def plot(self, data=None, color=None, marker=None, hide_error=False):
[8cb6cd6]	61	"""
[aadf0af1]	62	Add a new plot of self._data to the chart.
[8cb6cd6]	63	"""
[9290b1a]	64	# Data1D
	65	if isinstance(data, Data1D):
	66	self.data = data
	67	assert(self._data)
	68
[87cc73a]	69	is_fit = (self.data.id=="fit")
[570a58f9]	70
[f182f93]	71	# Transform data if required.
	72	# TODO: it properly!
	73	#if data.xtransform is not None or data.ytransform is not None:
	74	# a, b, c, d = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	75
[87cc73a]	76	# Shortcuts
[ef01be4]	77	ax = self.ax
[87cc73a]	78	x = self._data.view.x
	79	y = self._data.view.y
	80
	81	# Marker symbol. Passed marker is one of matplotlib.markers characters
	82	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	83	if marker is None:
	84	marker = self.data.symbol
[6fd4e36]	85	# Try name first
	86	try:
	87	marker = PlotUtilities.SHAPES[marker]
	88	except KeyError:
	89	marker = PlotUtilities.SHAPES.values()[marker]
[87cc73a]	90
[6fd4e36]	91	assert marker is not None
[87cc73a]	92	# Plot name
[b789967]	93	if self.data.title:
	94	self.title(title=self.data.title)
	95	else:
	96	self.title(title=self.data.name)
[87cc73a]	97
	98	# Error marker toggle
	99	if hide_error is None:
	100	hide_error = self.data.hide_error
	101
	102	# Plot color
	103	if color is None:
	104	color = self.data.custom_color
	105
	106	color = PlotUtilities.getValidColor(color)
	107
	108	markersize = self._data.markersize
	109
[239214f]	110	# Draw non-standard markers
	111	l_width = markersize * 0.4
	112	if marker == '-' or marker == '--':
	113	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	114	linestyle=marker, label=self._title, zorder=10)[0]
	115
	116	elif marker == 'vline':
	117	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	118	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	119	linestyle='-', label=self._title, lw=l_width, zorder=1)
	120
	121	elif marker == 'step':
	122	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	123	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	124
[c4e5400]	125	else:
[87cc73a]	126	# plot data with/without errorbars
	127	if hide_error:
	128	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	129	linestyle='', label=self._title, picker=True)
	130	else:
	131	line = ax.errorbar(x, y,
	132	yerr=self._data.view.dy, xerr=None,
	133	capsize=2, linestyle='',
	134	barsabove=False,
	135	color=color,
	136	marker=marker,
	137	markersize=markersize,
	138	lolims=False, uplims=False,
	139	xlolims=False, xuplims=False,
	140	label=self._title,
	141	picker=True)
[8cb6cd6]	142
[aadf0af1]	143	# Update the list of data sets (plots) in chart
	144	self.plot_dict[self._data.id] = self.data
	145
[8cb6cd6]	146	# Now add the legend with some customizations.
[f0bb711]	147
	148	self.legend = ax.legend(loc='upper right', shadow=True)
	149	if self.legend:
	150	self.legend.set_picker(True)
[8cb6cd6]	151
[6d05e1d]	152	# Current labels for axes
[570a58f9]	153	if self.y_label and not is_fit:
	154	ax.set_ylabel(self.y_label)
	155	if self.x_label and not is_fit:
	156	ax.set_xlabel(self.x_label)
[6d05e1d]	157
	158	# Include scaling (log vs. linear)
	159	ax.set_xscale(self.xscale)
[3b7b218]	160	ax.set_yscale(self.yscale)
[8cb6cd6]	161
[257bd57]	162	# define the ranges
	163	self.setRange = SetGraphRange(parent=self,
	164	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	165
[8cb6cd6]	166	# refresh canvas
	167	self.canvas.draw()
	168
[aadf0af1]	169	def createContextMenu(self):
[c4e5400]	170	"""
	171	Define common context menu and associated actions for the MPL widget
	172	"""
	173	self.defaultContextMenu()
	174
[aadf0af1]	175	# Separate plots
	176	self.addPlotsToContextMenu()
	177
[27313b7]	178	# Additional menu items
	179	self.contextMenu.addSeparator()
	180	self.actionAddText = self.contextMenu.addAction("Add Text")
	181	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	182	self.contextMenu.addSeparator()
	183	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	184	self.contextMenu.addSeparator()
	185	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	186	self.actionResetGraphRange =\
	187	self.contextMenu.addAction("Reset Graph Range")
	188	# Add the title change for dialogs
[aadf0af1]	189	#if self.parent:
	190	self.contextMenu.addSeparator()
	191	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	192
	193	# Define the callbacks
	194	self.actionAddText.triggered.connect(self.onAddText)
	195	self.actionRemoveText.triggered.connect(self.onRemoveText)
	196	self.actionChangeScale.triggered.connect(self.onScaleChange)
	197	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	198	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	199	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	200
[aadf0af1]	201	def addPlotsToContextMenu(self):
	202	"""
	203	Adds operations on all plotted sets of data to the context menu
	204	"""
	205	for id in self.plot_dict.keys():
	206	plot = self.plot_dict[id]
[b789967]	207
	208	name = plot.name if plot.name else plot.title
[aadf0af1]	209	plot_menu = self.contextMenu.addMenu('&%s' % name)
	210
	211	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	212	self.actionDataInfo.triggered.connect(
	213	functools.partial(self.onDataInfo, plot))
	214
	215	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	216	self.actionSavePointsAsFile.triggered.connect(
	217	functools.partial(self.onSavePoints, plot))
	218	plot_menu.addSeparator()
	219
	220	if plot.id != 'fit':
	221	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	222	self.actionLinearFit.triggered.connect(
	223	functools.partial(self.onLinearFit, id))
[aadf0af1]	224	plot_menu.addSeparator()
	225
	226	self.actionRemovePlot = plot_menu.addAction("Remove")
	227	self.actionRemovePlot.triggered.connect(
	228	functools.partial(self.onRemovePlot, id))
	229
	230	if not plot.is_data:
	231	self.actionFreeze = plot_menu.addAction('&Freeze')
	232	self.actionFreeze.triggered.connect(
	233	functools.partial(self.onFreeze, id))
	234	plot_menu.addSeparator()
	235
	236	if plot.is_data:
	237	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	238	if plot.dy is not None and plot.dy != []:
	239	if plot.hide_error:
	240	self.actionHideError.setText('Show Error Bar')
	241	else:
	242	self.actionHideError.setEnabled(False)
	243	self.actionHideError.triggered.connect(
	244	functools.partial(self.onToggleHideError, id))
	245	plot_menu.addSeparator()
	246
	247	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	248	self.actionModifyPlot.triggered.connect(
	249	functools.partial(self.onModifyPlot, id))
[aadf0af1]	250
	251	def createContextMenuQuick(self):
[6d05e1d]	252	"""
	253	Define context menu and associated actions for the quickplot MPL widget
	254	"""
[c4e5400]	255	# Default actions
	256	self.defaultContextMenu()
	257
	258	# Additional actions
[6d05e1d]	259	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	260	self.contextMenu.addSeparator()
	261	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	262
	263	# Define the callbacks
	264	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	265	self.actionChangeScale.triggered.connect(self.onScaleChange)
	266
	267	def onScaleChange(self):
	268	"""
	269	Show a dialog allowing axes rescaling
	270	"""
	271	if self.properties.exec_() == QtGui.QDialog.Accepted:
[570a58f9]	272	self.xLogLabel, self.yLogLabel = self.properties.getValues()
	273	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	274
[27313b7]	275	def onAddText(self):
	276	"""
	277	Show a dialog allowing adding custom text to the chart
	278	"""
[9290b1a]	279	if self.addText.exec_() == QtGui.QDialog.Accepted:
	280	# Retrieve the new text, its font and color
	281	extra_text = self.addText.text()
	282	extra_font = self.addText.font()
	283	extra_color = self.addText.color()
	284
	285	# Place the text on the screen at (0,0)
	286	pos_x = self.x_click
	287	pos_y = self.y_click
	288
	289	# Map QFont onto MPL font
	290	mpl_font = FontProperties()
	291	mpl_font.set_size(int(extra_font.pointSize()))
	292	mpl_font.set_family(str(extra_font.family()))
	293	mpl_font.set_weight(int(extra_font.weight()))
	294	# MPL style names
	295	styles = ['normal', 'italic', 'oblique']
	296	# QFont::Style maps directly onto the above
	297	try:
	298	mpl_font.set_style(styles[extra_font.style()])
	299	except:
	300	pass
	301
	302	if len(extra_text) > 0:
	303	new_text = self.ax.text(str(pos_x),
	304	str(pos_y),
	305	extra_text,
	306	color=extra_color,
	307	fontproperties=mpl_font)
	308	# Update the list of annotations
	309	self.textList.append(new_text)
	310	self.canvas.draw_idle()
[27313b7]	311
	312	def onRemoveText(self):
	313	"""
[9290b1a]	314	Remove the most recently added text
[27313b7]	315	"""
[d3ca363]	316	num_text = len(self.textList)
	317	if num_text < 1:
	318	return
	319	txt = self.textList[num_text - 1]
	320	text_remove = txt.get_text()
	321	txt.remove()
	322	self.textList.remove(txt)
	323
	324	self.canvas.draw_idle()
[27313b7]	325
	326	def onSetGraphRange(self):
	327	"""
	328	Show a dialog allowing setting the chart ranges
	329	"""
[d3ca363]	330	# min and max of data
	331	if self.setRange.exec_() == QtGui.QDialog.Accepted:
[257bd57]	332	x_range = self.setRange.xrange()
	333	y_range = self.setRange.yrange()
	334	if x_range is not None and y_range is not None:
	335	self.ax.set_xlim(x_range)
	336	self.ax.set_ylim(y_range)
	337	self.canvas.draw_idle()
[27313b7]	338
	339	def onResetGraphRange(self):
	340	"""
[d3ca363]	341	Resets the chart X and Y ranges to their original values
[27313b7]	342	"""
[d3ca363]	343	x_range = (self.data.x.min(), self.data.x.max())
	344	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	345	if x_range is not None and y_range is not None:
	346	self.ax.set_xlim(x_range)
	347	self.ax.set_ylim(y_range)
	348	self.canvas.draw_idle()
[27313b7]	349
[570a58f9]	350	def onLinearFit(self, id):
[aadf0af1]	351	"""
	352	Creates and displays a simple linear fit for the selected plot
	353	"""
[570a58f9]	354	selected_plot = self.plot_dict[id]
	355
	356	maxrange = (min(selected_plot.x), max(selected_plot.x))
	357	fitrange = self.ax.get_xlim()
	358
	359	fit_dialog = LinearFit(parent=self,
	360	data=selected_plot,
	361	max_range=maxrange,
	362	fit_range=fitrange,
	363	xlabel=self.xLogLabel,
	364	ylabel=self.yLogLabel)
	365	if fit_dialog.exec_() == QtGui.QDialog.Accepted:
	366	return
[aadf0af1]	367
[87cc73a]	368	def replacePlot(self, id, new_plot):
	369	"""
	370	Remove plot 'id' and add 'new_plot' to the chart.
	371	This effectlvely refreshes the chart with changes to one of its plots
	372	"""
	373	self.removePlot(id)
	374	self.plot(data=new_plot)
	375
[aadf0af1]	376	def onRemovePlot(self, id):
	377	"""
[570a58f9]	378	Responds to the plot delete action
	379	"""
	380	self.removePlot(id)
	381
	382	if len(self.plot_dict) == 0:
	383	# last plot: graph is empty must be the panel must be destroyed
	384	self.parent.close()
	385
	386	def removePlot(self, id):
	387	"""
[aadf0af1]	388	Deletes the selected plot from the chart
	389	"""
[fef38e8]	390	if id not in self.plot_dict.keys():
[570a58f9]	391	return
	392
[aadf0af1]	393	selected_plot = self.plot_dict[id]
	394
	395	plot_dict = copy.deepcopy(self.plot_dict)
	396
[b46f285]	397	# Labels might have been changed
	398	xl = self.ax.xaxis.label.get_text()
	399	yl = self.ax.yaxis.label.get_text()
	400
[aadf0af1]	401	self.plot_dict = {}
	402
	403	plt.cla()
	404	self.ax.cla()
	405
	406	for ids in plot_dict:
	407	if ids != id:
[b46f285]	408	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	409
	410	# Reset the labels
	411	self.ax.set_xlabel(xl)
	412	self.ax.set_ylabel(yl)
	413	self.canvas.draw()
[aadf0af1]	414
	415	def onFreeze(self, id):
	416	"""
	417	Freezes the selected plot to a separate chart
	418	"""
	419	plot = self.plot_dict[id]
	420	self.manager.add_data(data_list=[plot])
	421
[87cc73a]	422	def onModifyPlot(self, id):
[aadf0af1]	423	"""
	424	Allows for MPL modifications to the selected plot
	425	"""
[87cc73a]	426	selected_plot = self.plot_dict[id]
	427
	428	# Old style color - single integer for enum color
	429	# New style color - #hhhhhh
	430	color = selected_plot.custom_color
	431	# marker symbol and size
	432	marker = selected_plot.symbol
	433	marker_size = selected_plot.markersize
	434	# plot name
	435	legend = selected_plot.title
	436
	437	plotPropertiesWidget = PlotProperties(self,
	438	color=color,
	439	marker=marker,
	440	marker_size=marker_size,
	441	legend=legend)
	442	if plotPropertiesWidget.exec_() == QtGui.QDialog.Accepted:
	443	# Update Data1d
[0f3c22d]	444	selected_plot.markersize = plotPropertiesWidget.markersize()
	445	selected_plot.custom_color = plotPropertiesWidget.color()
	446	selected_plot.symbol = plotPropertiesWidget.marker()
	447	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	448
	449	# Redraw the plot
	450	self.replacePlot(id, selected_plot)
[aadf0af1]	451
	452	def onToggleHideError(self, id):
	453	"""
	454	Toggles hide error/show error menu item
	455	"""
	456	selected_plot = self.plot_dict[id]
	457	current = selected_plot.hide_error
	458
	459	# Flip the flag
	460	selected_plot.hide_error = not current
	461
	462	plot_dict = copy.deepcopy(self.plot_dict)
	463	self.plot_dict = {}
	464
	465	# Clean the canvas
	466	plt.cla()
	467	self.ax.cla()
	468
	469	# Recreate the plots but reverse the error flag for the current
	470	for ids in plot_dict:
	471	if ids == id:
	472	self.plot(data=plot_dict[ids], hide_error=(not current))
	473	else:
	474	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	475
[6d05e1d]	476	def xyTransform(self, xLabel="", yLabel=""):
	477	"""
	478	Transforms x and y in View and set the scale
	479	"""
[570a58f9]	480	# Transform all the plots on the chart
	481	for id in self.plot_dict.keys():
	482	current_plot = self.plot_dict[id]
	483	if current_plot.id == "fit":
	484	self.removePlot(id)
	485	continue
[fed94a2]	486
[570a58f9]	487	new_xlabel, new_ylabel, xscale, yscale =\
	488	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	489	self.xscale = xscale
	490	self.yscale = yscale
[b46f285]	491
[570a58f9]	492	# Plot the updated chart
	493	self.removePlot(id)
[b46f285]	494
	495	# This assignment will wrap the label in Latex "$"
	496	self.xLabel = new_xlabel
	497	self.yLabel = new_ylabel
[a66ff280]	498	# Directly overwrite the data to avoid label reassignment
	499	self._data = current_plot
[87cc73a]	500	self.plot()
[570a58f9]	501
	502	pass # debug hook
	503
[fed94a2]	504	def onFitDisplay(self, fit_data):
	505	"""
	506	Add a linear fitting line to the chart
	507	"""
	508	# Create new data structure with fitting result
	509	tempx = fit_data[0]
	510	tempy = fit_data[1]
	511	self.fit_result.x = []
	512	self.fit_result.y = []
	513	self.fit_result.x = tempx
	514	self.fit_result.y = tempy
	515	self.fit_result.dx = None
	516	self.fit_result.dy = None
	517
	518	#Remove another Fit, if exists
	519	self.removePlot("fit")
	520
	521	self.fit_result.reset_view()
	522	#self.offset_graph()
	523
	524	# Set plot properties
	525	self.fit_result.id = 'fit'
	526	self.fit_result.title = 'Fit'
	527	self.fit_result.name = 'Fit'
	528
	529	# Plot the line
[87cc73a]	530	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	531
[3bdbfcc]	532	def onMplMouseDown(self, event):
	533	"""
	534	Left button down and ready to drag
	535	"""
	536	# Check that the LEFT button was pressed
[0268aed]	537	if event.button != 1:
	538	return
	539
	540	self.leftdown = True
	541	for text in self.textList:
	542	if text.contains(event)[0]: # If user has clicked on text
	543	self.selectedText = text
	544	return
	545	if event.inaxes is None:
	546	return
	547	try:
	548	self.x_click = float(event.xdata) # / size_x
	549	self.y_click = float(event.ydata) # / size_y
	550	except:
	551	self.position = None
[3bdbfcc]	552
	553	def onMplMouseUp(self, event):
	554	"""
	555	Set the data coordinates of the click
	556	"""
	557	self.x_click = event.xdata
	558	self.y_click = event.ydata
	559
	560	# Check that the LEFT button was released
	561	if event.button == 1:
	562	self.leftdown = False
	563	self.selectedText = None
	564
	565	#release the legend
	566	if self.gotLegend == 1:
	567	self.gotLegend = 0
	568
	569	def onMplMouseMotion(self, event):
	570	"""
	571	Check if the left button is press and the mouse in moving.
	572	Compute delta for x and y coordinates and then perform the drag
	573	"""
	574	if self.gotLegend == 1 and self.leftdown:
	575	self.onLegendMotion(event)
	576	return
	577
[0268aed]	578	#if self.leftdown and self.selectedText is not None:
[9f25bce]	579	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	580	return
[0268aed]	581	# User has clicked on text and is dragging
[9f25bce]	582	if event.inaxes is None:
[0268aed]	583	# User has dragged outside of axes
	584	self.selectedText = None
	585	else:
	586	# Only move text if mouse is within axes
	587	self.selectedText.set_position((event.xdata, event.ydata))
	588	self.canvas.draw_idle()
	589	return
[3bdbfcc]	590
	591	def onMplPick(self, event):
	592	"""
	593	On pick legend
	594	"""
	595	legend = self.legend
[0268aed]	596	if event.artist != legend:
	597	return
	598	# Get the box of the legend.
	599	bbox = self.legend.get_window_extent()
	600	# Get mouse coordinates at time of pick.
	601	self.mouse_x = event.mouseevent.x
	602	self.mouse_y = event.mouseevent.y
	603	# Get legend coordinates at time of pick.
	604	self.legend_x = bbox.xmin
	605	self.legend_y = bbox.ymin
	606	# Indicate we picked up the legend.
	607	self.gotLegend = 1
	608
	609	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	610
	611	def onLegendMotion(self, event):
	612	"""
	613	On legend in motion
	614	"""
	615	ax = event.inaxes
	616	if ax == None:
	617	return
	618	# Event occurred inside a plotting area
	619	lo_x, hi_x = ax.get_xlim()
	620	lo_y, hi_y = ax.get_ylim()
	621	# How much the mouse moved.
	622	x = mouse_diff_x = self.mouse_x - event.x
	623	y = mouse_diff_y = self.mouse_y - event.y
	624	# Put back inside
	625	if x < lo_x:
	626	x = lo_x
	627	if x > hi_x:
	628	x = hi_x
	629	if y < lo_y:
	630	y = lo_y
	631	if y > hi_y:
	632	y = hi_y
	633	# Move the legend from its previous location by that same amount
	634	loc_in_canvas = self.legend_x - mouse_diff_x, \
	635	self.legend_y - mouse_diff_y
	636	# Transform into legend coordinate system
	637	trans_axes = self.legend.parent.transAxes.inverted()
	638	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	639	self.legend_pos_loc = tuple(loc_in_norm_axes)
	640	self.legend._loc = self.legend_pos_loc
	641	# self.canvas.draw()
	642	self.canvas.draw_idle()
	643
	644	def onMplWheel(self, event):
	645	"""
	646	Process mouse wheel as zoom events
	647	"""
	648	ax = event.inaxes
	649	step = event.step
	650
	651	if ax != None:
	652	# Event occurred inside a plotting area
	653	lo, hi = ax.get_xlim()
	654	lo, hi = PlotUtilities.rescale(lo, hi, step,
	655	pt=event.xdata, scale=ax.get_xscale())
	656	if not self.xscale == 'log' or lo > 0:
	657	self._scale_xlo = lo
	658	self._scale_xhi = hi
	659	ax.set_xlim((lo, hi))
	660
	661	lo, hi = ax.get_ylim()
	662	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	663	scale=ax.get_yscale())
	664	if not self.yscale == 'log' or lo > 0:
	665	self._scale_ylo = lo
	666	self._scale_yhi = hi
	667	ax.set_ylim((lo, hi))
	668	else:
	669	# Check if zoom happens in the axes
	670	xdata, ydata = None, None
	671	x, y = event.x, event.y
	672
	673	for ax in self.axes:
	674	insidex, _ = ax.xaxis.contains(event)
	675	if insidex:
	676	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	677	insidey, _ = ax.yaxis.contains(event)
	678	if insidey:
	679	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	680	if xdata is not None:
	681	lo, hi = ax.get_xlim()
	682	lo, hi = PlotUtilities.rescale(lo, hi, step,
	683	bal=xdata, scale=ax.get_xscale())
	684	if not self.xscale == 'log' or lo > 0:
	685	self._scale_xlo = lo
	686	self._scale_xhi = hi
	687	ax.set_xlim((lo, hi))
	688	if ydata is not None:
	689	lo, hi = ax.get_ylim()
	690	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	691	scale=ax.get_yscale())
	692	if not self.yscale == 'log' or lo > 0:
	693	self._scale_ylo = lo
	694	self._scale_yhi = hi
	695	ax.set_ylim((lo, hi))
	696	self.canvas.draw_idle()
	697
[c4e5400]	698
[416fa8f]	699	class Plotter(QtGui.QDialog, PlotterWidget):
	700	def __init__(self, parent=None, quickplot=False):
	701
	702	QtGui.QDialog.__init__(self)
[aadf0af1]	703	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	704	icon = QtGui.QIcon()
	705	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	706	self.setWindowIcon(icon)
	707
[416fa8f]	708

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ f159d1b

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