Plotter.py @ fef38e8

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 fef38e8 was fef38e8, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Startup time improvements - hiding expensive imports and such
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
[87cc73a]	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.
[9290b1a]	147	self.legend = ax.legend(loc='upper right', shadow=True)
[b789967]	148	if self.legend:
	149	self.legend.set_picker(True)
[8cb6cd6]	150
[6d05e1d]	151	# Current labels for axes
[570a58f9]	152	if self.y_label and not is_fit:
	153	ax.set_ylabel(self.y_label)
	154	if self.x_label and not is_fit:
	155	ax.set_xlabel(self.x_label)
[6d05e1d]	156
	157	# Include scaling (log vs. linear)
	158	ax.set_xscale(self.xscale)
[3b7b218]	159	ax.set_yscale(self.yscale)
[8cb6cd6]	160
[257bd57]	161	# define the ranges
	162	self.setRange = SetGraphRange(parent=self,
	163	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	164
[8cb6cd6]	165	# refresh canvas
	166	self.canvas.draw()
	167
[aadf0af1]	168	def createContextMenu(self):
[c4e5400]	169	"""
	170	Define common context menu and associated actions for the MPL widget
	171	"""
	172	self.defaultContextMenu()
	173
[aadf0af1]	174	# Separate plots
	175	self.addPlotsToContextMenu()
	176
[27313b7]	177	# Additional menu items
	178	self.contextMenu.addSeparator()
	179	self.actionAddText = self.contextMenu.addAction("Add Text")
	180	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	181	self.contextMenu.addSeparator()
	182	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	183	self.contextMenu.addSeparator()
	184	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	185	self.actionResetGraphRange =\
	186	self.contextMenu.addAction("Reset Graph Range")
	187	# Add the title change for dialogs
[aadf0af1]	188	#if self.parent:
	189	self.contextMenu.addSeparator()
	190	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	191
	192	# Define the callbacks
	193	self.actionAddText.triggered.connect(self.onAddText)
	194	self.actionRemoveText.triggered.connect(self.onRemoveText)
	195	self.actionChangeScale.triggered.connect(self.onScaleChange)
	196	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	197	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	198	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	199
[aadf0af1]	200	def addPlotsToContextMenu(self):
	201	"""
	202	Adds operations on all plotted sets of data to the context menu
	203	"""
	204	for id in self.plot_dict.keys():
	205	plot = self.plot_dict[id]
[b789967]	206
	207	name = plot.name if plot.name else plot.title
[aadf0af1]	208	plot_menu = self.contextMenu.addMenu('&%s' % name)
	209
	210	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	211	self.actionDataInfo.triggered.connect(
	212	functools.partial(self.onDataInfo, plot))
	213
	214	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	215	self.actionSavePointsAsFile.triggered.connect(
	216	functools.partial(self.onSavePoints, plot))
	217	plot_menu.addSeparator()
	218
	219	if plot.id != 'fit':
	220	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	221	self.actionLinearFit.triggered.connect(
	222	functools.partial(self.onLinearFit, id))
[aadf0af1]	223	plot_menu.addSeparator()
	224
	225	self.actionRemovePlot = plot_menu.addAction("Remove")
	226	self.actionRemovePlot.triggered.connect(
	227	functools.partial(self.onRemovePlot, id))
	228
	229	if not plot.is_data:
	230	self.actionFreeze = plot_menu.addAction('&Freeze')
	231	self.actionFreeze.triggered.connect(
	232	functools.partial(self.onFreeze, id))
	233	plot_menu.addSeparator()
	234
	235	if plot.is_data:
	236	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	237	if plot.dy is not None and plot.dy != []:
	238	if plot.hide_error:
	239	self.actionHideError.setText('Show Error Bar')
	240	else:
	241	self.actionHideError.setEnabled(False)
	242	self.actionHideError.triggered.connect(
	243	functools.partial(self.onToggleHideError, id))
	244	plot_menu.addSeparator()
	245
	246	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	247	self.actionModifyPlot.triggered.connect(
	248	functools.partial(self.onModifyPlot, id))
[aadf0af1]	249
	250	def createContextMenuQuick(self):
[6d05e1d]	251	"""
	252	Define context menu and associated actions for the quickplot MPL widget
	253	"""
[c4e5400]	254	# Default actions
	255	self.defaultContextMenu()
	256
	257	# Additional actions
[6d05e1d]	258	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	259	self.contextMenu.addSeparator()
	260	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	261
	262	# Define the callbacks
	263	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	264	self.actionChangeScale.triggered.connect(self.onScaleChange)
	265
	266	def onScaleChange(self):
	267	"""
	268	Show a dialog allowing axes rescaling
	269	"""
	270	if self.properties.exec_() == QtGui.QDialog.Accepted:
[570a58f9]	271	self.xLogLabel, self.yLogLabel = self.properties.getValues()
	272	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	273
[27313b7]	274	def onAddText(self):
	275	"""
	276	Show a dialog allowing adding custom text to the chart
	277	"""
[9290b1a]	278	if self.addText.exec_() == QtGui.QDialog.Accepted:
	279	# Retrieve the new text, its font and color
	280	extra_text = self.addText.text()
	281	extra_font = self.addText.font()
	282	extra_color = self.addText.color()
	283
	284	# Place the text on the screen at (0,0)
	285	pos_x = self.x_click
	286	pos_y = self.y_click
	287
	288	# Map QFont onto MPL font
	289	mpl_font = FontProperties()
	290	mpl_font.set_size(int(extra_font.pointSize()))
	291	mpl_font.set_family(str(extra_font.family()))
	292	mpl_font.set_weight(int(extra_font.weight()))
	293	# MPL style names
	294	styles = ['normal', 'italic', 'oblique']
	295	# QFont::Style maps directly onto the above
	296	try:
	297	mpl_font.set_style(styles[extra_font.style()])
	298	except:
	299	pass
	300
	301	if len(extra_text) > 0:
	302	new_text = self.ax.text(str(pos_x),
	303	str(pos_y),
	304	extra_text,
	305	color=extra_color,
	306	fontproperties=mpl_font)
	307	# Update the list of annotations
	308	self.textList.append(new_text)
	309	self.canvas.draw_idle()
[27313b7]	310
	311	def onRemoveText(self):
	312	"""
[9290b1a]	313	Remove the most recently added text
[27313b7]	314	"""
[d3ca363]	315	num_text = len(self.textList)
	316	if num_text < 1:
	317	return
	318	txt = self.textList[num_text - 1]
	319	text_remove = txt.get_text()
	320	txt.remove()
	321	self.textList.remove(txt)
	322
	323	self.canvas.draw_idle()
[27313b7]	324
	325	def onSetGraphRange(self):
	326	"""
	327	Show a dialog allowing setting the chart ranges
	328	"""
[d3ca363]	329	# min and max of data
	330	if self.setRange.exec_() == QtGui.QDialog.Accepted:
[257bd57]	331	x_range = self.setRange.xrange()
	332	y_range = self.setRange.yrange()
	333	if x_range is not None and y_range is not None:
	334	self.ax.set_xlim(x_range)
	335	self.ax.set_ylim(y_range)
	336	self.canvas.draw_idle()
[27313b7]	337
	338	def onResetGraphRange(self):
	339	"""
[d3ca363]	340	Resets the chart X and Y ranges to their original values
[27313b7]	341	"""
[d3ca363]	342	x_range = (self.data.x.min(), self.data.x.max())
	343	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	344	if x_range is not None and y_range is not None:
	345	self.ax.set_xlim(x_range)
	346	self.ax.set_ylim(y_range)
	347	self.canvas.draw_idle()
[27313b7]	348
[570a58f9]	349	def onLinearFit(self, id):
[aadf0af1]	350	"""
	351	Creates and displays a simple linear fit for the selected plot
	352	"""
[570a58f9]	353	selected_plot = self.plot_dict[id]
	354
	355	maxrange = (min(selected_plot.x), max(selected_plot.x))
	356	fitrange = self.ax.get_xlim()
	357
	358	fit_dialog = LinearFit(parent=self,
	359	data=selected_plot,
	360	max_range=maxrange,
	361	fit_range=fitrange,
	362	xlabel=self.xLogLabel,
	363	ylabel=self.yLogLabel)
	364	if fit_dialog.exec_() == QtGui.QDialog.Accepted:
	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	"""
[fef38e8]	389	if id not in 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)
	441	if plotPropertiesWidget.exec_() == QtGui.QDialog.Accepted:
	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
	480	for id in self.plot_dict.keys():
	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
	615	if ax == None:
	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
	650	if ax != None:
	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
[416fa8f]	698	class Plotter(QtGui.QDialog, PlotterWidget):
	699	def __init__(self, parent=None, quickplot=False):
	700
	701	QtGui.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 @ fef38e8

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