/usr/lib/python2.7/dist-packages/pyqtgraph/flowchart/library/Display.py is in python-pyqtgraph 0.9.10-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 | # -*- coding: utf-8 -*-
from ..Node import Node
import weakref
from ...Qt import QtCore, QtGui
from ...graphicsItems.ScatterPlotItem import ScatterPlotItem
from ...graphicsItems.PlotCurveItem import PlotCurveItem
from ... import PlotDataItem, ComboBox
from .common import *
import numpy as np
class PlotWidgetNode(Node):
"""Connection to PlotWidget. Will plot arrays, metaarrays, and display event lists."""
nodeName = 'PlotWidget'
sigPlotChanged = QtCore.Signal(object)
def __init__(self, name):
Node.__init__(self, name, terminals={'In': {'io': 'in', 'multi': True}})
self.plot = None # currently selected plot
self.plots = {} # list of available plots user may select from
self.ui = None
self.items = {}
def disconnected(self, localTerm, remoteTerm):
if localTerm is self['In'] and remoteTerm in self.items:
self.plot.removeItem(self.items[remoteTerm])
del self.items[remoteTerm]
def setPlot(self, plot):
#print "======set plot"
if plot == self.plot:
return
# clear data from previous plot
if self.plot is not None:
for vid in list(self.items.keys()):
self.plot.removeItem(self.items[vid])
del self.items[vid]
self.plot = plot
self.updateUi()
self.update()
self.sigPlotChanged.emit(self)
def getPlot(self):
return self.plot
def process(self, In, display=True):
if display and self.plot is not None:
items = set()
# Add all new input items to selected plot
for name, vals in In.items():
if vals is None:
continue
if type(vals) is not list:
vals = [vals]
for val in vals:
vid = id(val)
if vid in self.items and self.items[vid].scene() is self.plot.scene():
# Item is already added to the correct scene
# possible bug: what if two plots occupy the same scene? (should
# rarely be a problem because items are removed from a plot before
# switching).
items.add(vid)
else:
# Add the item to the plot, or generate a new item if needed.
if isinstance(val, QtGui.QGraphicsItem):
self.plot.addItem(val)
item = val
else:
item = self.plot.plot(val)
self.items[vid] = item
items.add(vid)
# Any left-over items that did not appear in the input must be removed
for vid in list(self.items.keys()):
if vid not in items:
self.plot.removeItem(self.items[vid])
del self.items[vid]
def processBypassed(self, args):
if self.plot is None:
return
for item in list(self.items.values()):
self.plot.removeItem(item)
self.items = {}
def ctrlWidget(self):
if self.ui is None:
self.ui = ComboBox()
self.ui.currentIndexChanged.connect(self.plotSelected)
self.updateUi()
return self.ui
def plotSelected(self, index):
self.setPlot(self.ui.value())
def setPlotList(self, plots):
"""
Specify the set of plots (PlotWidget or PlotItem) that the user may
select from.
*plots* must be a dictionary of {name: plot} pairs.
"""
self.plots = plots
self.updateUi()
def updateUi(self):
# sets list and automatically preserves previous selection
self.ui.setItems(self.plots)
try:
self.ui.setValue(self.plot)
except ValueError:
pass
class CanvasNode(Node):
"""Connection to a Canvas widget."""
nodeName = 'CanvasWidget'
def __init__(self, name):
Node.__init__(self, name, terminals={'In': {'io': 'in', 'multi': True}})
self.canvas = None
self.items = {}
def disconnected(self, localTerm, remoteTerm):
if localTerm is self.In and remoteTerm in self.items:
self.canvas.removeItem(self.items[remoteTerm])
del self.items[remoteTerm]
def setCanvas(self, canvas):
self.canvas = canvas
def getCanvas(self):
return self.canvas
def process(self, In, display=True):
if display:
items = set()
for name, vals in In.items():
if vals is None:
continue
if type(vals) is not list:
vals = [vals]
for val in vals:
vid = id(val)
if vid in self.items:
items.add(vid)
else:
self.canvas.addItem(val)
item = val
self.items[vid] = item
items.add(vid)
for vid in list(self.items.keys()):
if vid not in items:
#print "remove", self.items[vid]
self.canvas.removeItem(self.items[vid])
del self.items[vid]
class PlotCurve(CtrlNode):
"""Generates a plot curve from x/y data"""
nodeName = 'PlotCurve'
uiTemplate = [
('color', 'color'),
]
def __init__(self, name):
CtrlNode.__init__(self, name, terminals={
'x': {'io': 'in'},
'y': {'io': 'in'},
'plot': {'io': 'out'}
})
self.item = PlotDataItem()
def process(self, x, y, display=True):
#print "scatterplot process"
if not display:
return {'plot': None}
self.item.setData(x, y, pen=self.ctrls['color'].color())
return {'plot': self.item}
class ScatterPlot(CtrlNode):
"""Generates a scatter plot from a record array or nested dicts"""
nodeName = 'ScatterPlot'
uiTemplate = [
('x', 'combo', {'values': [], 'index': 0}),
('y', 'combo', {'values': [], 'index': 0}),
('sizeEnabled', 'check', {'value': False}),
('size', 'combo', {'values': [], 'index': 0}),
('absoluteSize', 'check', {'value': False}),
('colorEnabled', 'check', {'value': False}),
('color', 'colormap', {}),
('borderEnabled', 'check', {'value': False}),
('border', 'colormap', {}),
]
def __init__(self, name):
CtrlNode.__init__(self, name, terminals={
'input': {'io': 'in'},
'plot': {'io': 'out'}
})
self.item = ScatterPlotItem()
self.keys = []
#self.ui = QtGui.QWidget()
#self.layout = QtGui.QGridLayout()
#self.ui.setLayout(self.layout)
#self.xCombo = QtGui.QComboBox()
#self.yCombo = QtGui.QComboBox()
def process(self, input, display=True):
#print "scatterplot process"
if not display:
return {'plot': None}
self.updateKeys(input[0])
x = str(self.ctrls['x'].currentText())
y = str(self.ctrls['y'].currentText())
size = str(self.ctrls['size'].currentText())
pen = QtGui.QPen(QtGui.QColor(0,0,0,0))
points = []
for i in input:
pt = {'pos': (i[x], i[y])}
if self.ctrls['sizeEnabled'].isChecked():
pt['size'] = i[size]
if self.ctrls['borderEnabled'].isChecked():
pt['pen'] = QtGui.QPen(self.ctrls['border'].getColor(i))
else:
pt['pen'] = pen
if self.ctrls['colorEnabled'].isChecked():
pt['brush'] = QtGui.QBrush(self.ctrls['color'].getColor(i))
points.append(pt)
self.item.setPxMode(not self.ctrls['absoluteSize'].isChecked())
self.item.setPoints(points)
return {'plot': self.item}
def updateKeys(self, data):
if isinstance(data, dict):
keys = list(data.keys())
elif isinstance(data, list) or isinstance(data, tuple):
keys = data
elif isinstance(data, np.ndarray) or isinstance(data, np.void):
keys = data.dtype.names
else:
print("Unknown data type:", type(data), data)
return
for c in self.ctrls.values():
c.blockSignals(True)
for c in [self.ctrls['x'], self.ctrls['y'], self.ctrls['size']]:
cur = str(c.currentText())
c.clear()
for k in keys:
c.addItem(k)
if k == cur:
c.setCurrentIndex(c.count()-1)
for c in [self.ctrls['color'], self.ctrls['border']]:
c.setArgList(keys)
for c in self.ctrls.values():
c.blockSignals(False)
self.keys = keys
def saveState(self):
state = CtrlNode.saveState(self)
return {'keys': self.keys, 'ctrls': state}
def restoreState(self, state):
self.updateKeys(state['keys'])
CtrlNode.restoreState(self, state['ctrls'])
#class ImageItem(Node):
#"""Creates an ImageItem for display in a canvas from a file handle."""
#nodeName = 'Image'
#def __init__(self, name):
#Node.__init__(self, name, terminals={
#'file': {'io': 'in'},
#'image': {'io': 'out'}
#})
#self.imageItem = graphicsItems.ImageItem()
#self.handle = None
#def process(self, file, display=True):
#if not display:
#return {'image': None}
#if file != self.handle:
#self.handle = file
#data = file.read()
#self.imageItem.updateImage(data)
#pos = file.
|