/usr/lib/python2.7/dist-packages/pyqtgraph/__init__.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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 | # -*- coding: utf-8 -*-
"""
PyQtGraph - Scientific Graphics and GUI Library for Python
www.pyqtgraph.org
"""
__version__ = '0.9.10'
### import all the goodies and add some helper functions for easy CLI use
## 'Qt' is a local module; it is intended mainly to cover up the differences
## between PyQt4 and PySide.
from .Qt import QtGui
## not really safe--If we accidentally create another QApplication, the process hangs (and it is very difficult to trace the cause)
#if QtGui.QApplication.instance() is None:
#app = QtGui.QApplication([])
import numpy ## pyqtgraph requires numpy
## (import here to avoid massive error dump later on if numpy is not available)
import os, sys
## check python version
## Allow anything >= 2.7
if sys.version_info[0] < 2 or (sys.version_info[0] == 2 and sys.version_info[1] < 6):
raise Exception("Pyqtgraph requires Python version 2.6 or greater (this is %d.%d)" % (sys.version_info[0], sys.version_info[1]))
## helpers for 2/3 compatibility
from . import python2_3
## install workarounds for numpy bugs
from . import numpy_fix
## in general openGL is poorly supported with Qt+GraphicsView.
## we only enable it where the performance benefit is critical.
## Note this only applies to 2D graphics; 3D graphics always use OpenGL.
if 'linux' in sys.platform: ## linux has numerous bugs in opengl implementation
useOpenGL = False
elif 'darwin' in sys.platform: ## openGL can have a major impact on mac, but also has serious bugs
useOpenGL = False
if QtGui.QApplication.instance() is not None:
print('Warning: QApplication was created before pyqtgraph was imported; there may be problems (to avoid bugs, call QApplication.setGraphicsSystem("raster") before the QApplication is created).')
QtGui.QApplication.setGraphicsSystem('raster') ## work around a variety of bugs in the native graphics system
else:
useOpenGL = False ## on windows there's a more even performance / bugginess tradeoff.
CONFIG_OPTIONS = {
'useOpenGL': useOpenGL, ## by default, this is platform-dependent (see widgets/GraphicsView). Set to True or False to explicitly enable/disable opengl.
'leftButtonPan': True, ## if false, left button drags a rubber band for zooming in viewbox
'foreground': 'd', ## default foreground color for axes, labels, etc.
'background': 'k', ## default background for GraphicsWidget
'antialias': False,
'editorCommand': None, ## command used to invoke code editor from ConsoleWidgets
'useWeave': False, ## Use weave to speed up some operations, if it is available
'weaveDebug': False, ## Print full error message if weave compile fails
'exitCleanup': True, ## Attempt to work around some exit crash bugs in PyQt and PySide
'enableExperimental': False, ## Enable experimental features (the curious can search for this key in the code)
'crashWarning': False, # If True, print warnings about situations that may result in a crash
}
def setConfigOption(opt, value):
CONFIG_OPTIONS[opt] = value
def setConfigOptions(**opts):
CONFIG_OPTIONS.update(opts)
def getConfigOption(opt):
return CONFIG_OPTIONS[opt]
def systemInfo():
print("sys.platform: %s" % sys.platform)
print("sys.version: %s" % sys.version)
from .Qt import VERSION_INFO
print("qt bindings: %s" % VERSION_INFO)
global __version__
rev = None
if __version__ is None: ## this code was probably checked out from bzr; look up the last-revision file
lastRevFile = os.path.join(os.path.dirname(__file__), '..', '.bzr', 'branch', 'last-revision')
if os.path.exists(lastRevFile):
rev = open(lastRevFile, 'r').read().strip()
print("pyqtgraph: %s; %s" % (__version__, rev))
print("config:")
import pprint
pprint.pprint(CONFIG_OPTIONS)
## Rename orphaned .pyc files. This is *probably* safe :)
## We only do this if __version__ is None, indicating the code was probably pulled
## from the repository.
def renamePyc(startDir):
### Used to rename orphaned .pyc files
### When a python file changes its location in the repository, usually the .pyc file
### is left behind, possibly causing mysterious and difficult to track bugs.
### Note that this is no longer necessary for python 3.2; from PEP 3147:
### "If the py source file is missing, the pyc file inside __pycache__ will be ignored.
### This eliminates the problem of accidental stale pyc file imports."
printed = False
startDir = os.path.abspath(startDir)
for path, dirs, files in os.walk(startDir):
if '__pycache__' in path:
continue
for f in files:
fileName = os.path.join(path, f)
base, ext = os.path.splitext(fileName)
py = base + ".py"
if ext == '.pyc' and not os.path.isfile(py):
if not printed:
print("NOTE: Renaming orphaned .pyc files:")
printed = True
n = 1
while True:
name2 = fileName + ".renamed%d" % n
if not os.path.exists(name2):
break
n += 1
print(" " + fileName + " ==>")
print(" " + name2)
os.rename(fileName, name2)
path = os.path.split(__file__)[0]
if __version__ is None and not hasattr(sys, 'frozen') and sys.version_info[0] == 2: ## If we are frozen, there's a good chance we don't have the original .py files anymore.
renamePyc(path)
## Import almost everything to make it available from a single namespace
## don't import the more complex systems--canvas, parametertree, flowchart, dockarea
## these must be imported separately.
#from . import frozenSupport
#def importModules(path, globals, locals, excludes=()):
#"""Import all modules residing within *path*, return a dict of name: module pairs.
#Note that *path* MUST be relative to the module doing the import.
#"""
#d = os.path.join(os.path.split(globals['__file__'])[0], path)
#files = set()
#for f in frozenSupport.listdir(d):
#if frozenSupport.isdir(os.path.join(d, f)) and f not in ['__pycache__', 'tests']:
#files.add(f)
#elif f[-3:] == '.py' and f != '__init__.py':
#files.add(f[:-3])
#elif f[-4:] == '.pyc' and f != '__init__.pyc':
#files.add(f[:-4])
#mods = {}
#path = path.replace(os.sep, '.')
#for modName in files:
#if modName in excludes:
#continue
#try:
#if len(path) > 0:
#modName = path + '.' + modName
#print( "from .%s import * " % modName)
#mod = __import__(modName, globals, locals, ['*'], 1)
#mods[modName] = mod
#except:
#import traceback
#traceback.print_stack()
#sys.excepthook(*sys.exc_info())
#print("[Error importing module: %s]" % modName)
#return mods
#def importAll(path, globals, locals, excludes=()):
#"""Given a list of modules, import all names from each module into the global namespace."""
#mods = importModules(path, globals, locals, excludes)
#for mod in mods.values():
#if hasattr(mod, '__all__'):
#names = mod.__all__
#else:
#names = [n for n in dir(mod) if n[0] != '_']
#for k in names:
#if hasattr(mod, k):
#globals[k] = getattr(mod, k)
# Dynamic imports are disabled. This causes too many problems.
#importAll('graphicsItems', globals(), locals())
#importAll('widgets', globals(), locals(),
#excludes=['MatplotlibWidget', 'RawImageWidget', 'RemoteGraphicsView'])
from .graphicsItems.VTickGroup import *
from .graphicsItems.GraphicsWidget import *
from .graphicsItems.ScaleBar import *
from .graphicsItems.PlotDataItem import *
from .graphicsItems.GraphItem import *
from .graphicsItems.TextItem import *
from .graphicsItems.GraphicsLayout import *
from .graphicsItems.UIGraphicsItem import *
from .graphicsItems.GraphicsObject import *
from .graphicsItems.PlotItem import *
from .graphicsItems.ROI import *
from .graphicsItems.InfiniteLine import *
from .graphicsItems.HistogramLUTItem import *
from .graphicsItems.GridItem import *
from .graphicsItems.GradientLegend import *
from .graphicsItems.GraphicsItem import *
from .graphicsItems.BarGraphItem import *
from .graphicsItems.ViewBox import *
from .graphicsItems.ArrowItem import *
from .graphicsItems.ImageItem import *
from .graphicsItems.AxisItem import *
from .graphicsItems.LabelItem import *
from .graphicsItems.CurvePoint import *
from .graphicsItems.GraphicsWidgetAnchor import *
from .graphicsItems.PlotCurveItem import *
from .graphicsItems.ButtonItem import *
from .graphicsItems.GradientEditorItem import *
from .graphicsItems.MultiPlotItem import *
from .graphicsItems.ErrorBarItem import *
from .graphicsItems.IsocurveItem import *
from .graphicsItems.LinearRegionItem import *
from .graphicsItems.FillBetweenItem import *
from .graphicsItems.LegendItem import *
from .graphicsItems.ScatterPlotItem import *
from .graphicsItems.ItemGroup import *
from .widgets.MultiPlotWidget import *
from .widgets.ScatterPlotWidget import *
from .widgets.ColorMapWidget import *
from .widgets.FileDialog import *
from .widgets.ValueLabel import *
from .widgets.HistogramLUTWidget import *
from .widgets.CheckTable import *
from .widgets.BusyCursor import *
from .widgets.PlotWidget import *
from .widgets.ComboBox import *
from .widgets.GradientWidget import *
from .widgets.DataFilterWidget import *
from .widgets.SpinBox import *
from .widgets.JoystickButton import *
from .widgets.GraphicsLayoutWidget import *
from .widgets.TreeWidget import *
from .widgets.PathButton import *
from .widgets.VerticalLabel import *
from .widgets.FeedbackButton import *
from .widgets.ColorButton import *
from .widgets.DataTreeWidget import *
from .widgets.GraphicsView import *
from .widgets.LayoutWidget import *
from .widgets.TableWidget import *
from .widgets.ProgressDialog import *
from .imageview import *
from .WidgetGroup import *
from .Point import Point
from .Vector import Vector
from .SRTTransform import SRTTransform
from .Transform3D import Transform3D
from .SRTTransform3D import SRTTransform3D
from .functions import *
from .graphicsWindows import *
from .SignalProxy import *
from .colormap import *
from .ptime import time
from .Qt import isQObjectAlive
##############################################################
## PyQt and PySide both are prone to crashing on exit.
## There are two general approaches to dealing with this:
## 1. Install atexit handlers that assist in tearing down to avoid crashes.
## This helps, but is never perfect.
## 2. Terminate the process before python starts tearing down
## This is potentially dangerous
## Attempts to work around exit crashes:
import atexit
_cleanupCalled = False
def cleanup():
global _cleanupCalled
if _cleanupCalled:
return
if not getConfigOption('exitCleanup'):
return
ViewBox.quit() ## tell ViewBox that it doesn't need to deregister views anymore.
## Workaround for Qt exit crash:
## ALL QGraphicsItems must have a scene before they are deleted.
## This is potentially very expensive, but preferred over crashing.
## Note: this appears to be fixed in PySide as of 2012.12, but it should be left in for a while longer..
if QtGui.QApplication.instance() is None:
return
import gc
s = QtGui.QGraphicsScene()
for o in gc.get_objects():
try:
if isinstance(o, QtGui.QGraphicsItem) and isQObjectAlive(o) and o.scene() is None:
if getConfigOption('crashWarning'):
sys.stderr.write('Error: graphics item without scene. '
'Make sure ViewBox.close() and GraphicsView.close() '
'are properly called before app shutdown (%s)\n' % (o,))
s.addItem(o)
except RuntimeError: ## occurs if a python wrapper no longer has its underlying C++ object
continue
_cleanupCalled = True
atexit.register(cleanup)
# Call cleanup when QApplication quits. This is necessary because sometimes
# the QApplication will quit before the atexit callbacks are invoked.
# Note: cannot connect this function until QApplication has been created, so
# instead we have GraphicsView.__init__ call this for us.
_cleanupConnected = False
def _connectCleanup():
global _cleanupConnected
if _cleanupConnected:
return
QtGui.QApplication.instance().aboutToQuit.connect(cleanup)
_cleanupConnected = True
## Optional function for exiting immediately (with some manual teardown)
def exit():
"""
Causes python to exit without garbage-collecting any objects, and thus avoids
calling object destructor methods. This is a sledgehammer workaround for
a variety of bugs in PyQt and Pyside that cause crashes on exit.
This function does the following in an attempt to 'safely' terminate
the process:
* Invoke atexit callbacks
* Close all open file handles
* os._exit()
Note: there is some potential for causing damage with this function if you
are using objects that _require_ their destructors to be called (for example,
to properly terminate log files, disconnect from devices, etc). Situations
like this are probably quite rare, but use at your own risk.
"""
## first disable our own cleanup function; won't be needing it.
setConfigOptions(exitCleanup=False)
## invoke atexit callbacks
atexit._run_exitfuncs()
## close file handles
if sys.platform == 'darwin':
for fd in xrange(3, 4096):
if fd not in [7]: # trying to close 7 produces an illegal instruction on the Mac.
os.close(fd)
else:
os.closerange(3, 4096) ## just guessing on the maximum descriptor count..
os._exit(0)
## Convenience functions for command-line use
plots = []
images = []
QAPP = None
def plot(*args, **kargs):
"""
Create and return a :class:`PlotWindow <pyqtgraph.PlotWindow>`
(this is just a window with :class:`PlotWidget <pyqtgraph.PlotWidget>` inside), plot data in it.
Accepts a *title* argument to set the title of the window.
All other arguments are used to plot data. (see :func:`PlotItem.plot() <pyqtgraph.PlotItem.plot>`)
"""
mkQApp()
#if 'title' in kargs:
#w = PlotWindow(title=kargs['title'])
#del kargs['title']
#else:
#w = PlotWindow()
#if len(args)+len(kargs) > 0:
#w.plot(*args, **kargs)
pwArgList = ['title', 'labels', 'name', 'left', 'right', 'top', 'bottom', 'background']
pwArgs = {}
dataArgs = {}
for k in kargs:
if k in pwArgList:
pwArgs[k] = kargs[k]
else:
dataArgs[k] = kargs[k]
w = PlotWindow(**pwArgs)
if len(args) > 0 or len(dataArgs) > 0:
w.plot(*args, **dataArgs)
plots.append(w)
w.show()
return w
def image(*args, **kargs):
"""
Create and return an :class:`ImageWindow <pyqtgraph.ImageWindow>`
(this is just a window with :class:`ImageView <pyqtgraph.ImageView>` widget inside), show image data inside.
Will show 2D or 3D image data.
Accepts a *title* argument to set the title of the window.
All other arguments are used to show data. (see :func:`ImageView.setImage() <pyqtgraph.ImageView.setImage>`)
"""
mkQApp()
w = ImageWindow(*args, **kargs)
images.append(w)
w.show()
return w
show = image ## for backward compatibility
def dbg(*args, **kwds):
"""
Create a console window and begin watching for exceptions.
All arguments are passed to :func:`ConsoleWidget.__init__() <pyqtgraph.console.ConsoleWidget.__init__>`.
"""
mkQApp()
from . import console
c = console.ConsoleWidget(*args, **kwds)
c.catchAllExceptions()
c.show()
global consoles
try:
consoles.append(c)
except NameError:
consoles = [c]
return c
def mkQApp():
global QAPP
inst = QtGui.QApplication.instance()
if inst is None:
QAPP = QtGui.QApplication([])
else:
QAPP = inst
return QAPP
|