pyqtgraph/examples/__main__.py
Luke Campagnola 3a27997014 Plotting performance improvements:
- AxisItem shows fewer tick levels in some cases.
  - Lots of boundingRect and dataBounds caching
    (improves ViewBox auto-range performance, especially with multiple plots)
  - GraphicsScene avoids testing for hover intersections with non-hoverable items
    (much less slowdown when moving mouse over plots)

Improved performance for remote plotting:
  - reduced cost of transferring arrays between processes (pickle is too slow)
  - avoid unnecessary synchronous calls

Added RemoteSpeedTest example
2013-01-11 20:30:08 -05:00

248 lines
7.7 KiB
Python

import sys, os, subprocess, time
import initExample
from pyqtgraph.Qt import QtCore, QtGui, USE_PYSIDE
if USE_PYSIDE:
from exampleLoaderTemplate_pyside import Ui_Form
else:
from exampleLoaderTemplate_pyqt import Ui_Form
import os, sys
from pyqtgraph.pgcollections import OrderedDict
examples = OrderedDict([
('Command-line usage', 'CLIexample.py'),
('Basic Plotting', 'Plotting.py'),
('ImageView', 'ImageView.py'),
('ParameterTree', 'parametertree.py'),
('Crosshair / Mouse interaction', 'crosshair.py'),
('Data Slicing', 'DataSlicing.py'),
('Plot Customization', 'customPlot.py'),
('Dock widgets', 'dockarea.py'),
('Console', 'ConsoleWidget.py'),
('Histograms', 'histogram.py'),
('Remote Plotting', 'RemoteSpeedTest.py'),
('GraphicsItems', OrderedDict([
('Scatter Plot', 'ScatterPlot.py'),
#('PlotItem', 'PlotItem.py'),
('IsocurveItem', 'isocurve.py'),
('ImageItem - video', 'ImageItem.py'),
('ImageItem - draw', 'Draw.py'),
('Region-of-Interest', 'ROIExamples.py'),
('GraphicsLayout', 'GraphicsLayout.py'),
('LegendItem', 'Legend.py'),
('Text Item', 'text.py'),
('Linked Views', 'linkedViews.py'),
('Arrow', 'Arrow.py'),
('ViewBox', 'ViewBox.py'),
])),
('Benchmarks', OrderedDict([
('Video speed test', 'VideoSpeedTest.py'),
('Line Plot update', 'PlotSpeedTest.py'),
('Scatter Plot update', 'ScatterPlotSpeedTest.py'),
])),
('3D Graphics', OrderedDict([
('Volumetric', 'GLVolumeItem.py'),
('Isosurface', 'GLIsosurface.py'),
('Surface Plot', 'GLSurfacePlot.py'),
('Scatter Plot', 'GLScatterPlotItem.py'),
('Shaders', 'GLshaders.py'),
('Line Plot', 'GLLinePlotItem.py'),
('Mesh', 'GLMeshItem.py'),
('Image', 'GLImageItem.py'),
])),
('Widgets', OrderedDict([
('PlotWidget', 'PlotWidget.py'),
('SpinBox', 'SpinBox.py'),
('ConsoleWidget', 'ConsoleWidget.py'),
('TreeWidget', 'TreeWidget.py'),
('DataTreeWidget', 'DataTreeWidget.py'),
('GradientWidget', 'GradientWidget.py'),
#('TableWidget', '../widgets/TableWidget.py'),
('ColorButton', 'ColorButton.py'),
#('CheckTable', '../widgets/CheckTable.py'),
#('VerticalLabel', '../widgets/VerticalLabel.py'),
('JoystickButton', 'JoystickButton.py'),
])),
('GraphicsScene', 'GraphicsScene.py'),
('Flowcharts', 'Flowchart.py'),
('Custom Flowchart Nodes', 'FlowchartCustomNode.py'),
#('Canvas', '../canvas'),
#('MultiPlotWidget', 'MultiPlotWidget.py'),
])
path = os.path.abspath(os.path.dirname(__file__))
class ExampleLoader(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.ui = Ui_Form()
self.cw = QtGui.QWidget()
self.setCentralWidget(self.cw)
self.ui.setupUi(self.cw)
global examples
self.populateTree(self.ui.exampleTree.invisibleRootItem(), examples)
self.ui.exampleTree.expandAll()
self.resize(1000,500)
self.show()
self.ui.splitter.setSizes([250,750])
self.ui.loadBtn.clicked.connect(self.loadFile)
self.ui.exampleTree.currentItemChanged.connect(self.showFile)
self.ui.exampleTree.itemDoubleClicked.connect(self.loadFile)
self.ui.pyqtCheck.toggled.connect(self.pyqtToggled)
self.ui.pysideCheck.toggled.connect(self.pysideToggled)
def pyqtToggled(self, b):
if b:
self.ui.pysideCheck.setChecked(False)
def pysideToggled(self, b):
if b:
self.ui.pyqtCheck.setChecked(False)
def populateTree(self, root, examples):
for key, val in examples.items():
item = QtGui.QTreeWidgetItem([key])
if isinstance(val, basestring):
item.file = val
else:
self.populateTree(item, val)
root.addChild(item)
def currentFile(self):
item = self.ui.exampleTree.currentItem()
if hasattr(item, 'file'):
global path
return os.path.join(path, item.file)
return None
def loadFile(self):
fn = self.currentFile()
extra = []
if self.ui.pyqtCheck.isChecked():
extra.append('pyqt')
elif self.ui.pysideCheck.isChecked():
extra.append('pyside')
if self.ui.forceGraphicsCheck.isChecked():
extra.append(str(self.ui.forceGraphicsCombo.currentText()))
if fn is None:
return
if sys.platform.startswith('win'):
os.spawnl(os.P_NOWAIT, sys.executable, '"'+sys.executable+'"', '"' + fn + '"', *extra)
else:
os.spawnl(os.P_NOWAIT, sys.executable, sys.executable, fn, *extra)
def showFile(self):
fn = self.currentFile()
if fn is None:
self.ui.codeView.clear()
return
if os.path.isdir(fn):
fn = os.path.join(fn, '__main__.py')
text = open(fn).read()
self.ui.codeView.setPlainText(text)
def run():
app = QtGui.QApplication([])
loader = ExampleLoader()
app.exec_()
def buildFileList(examples, files=None):
if files == None:
files = []
for key, val in examples.items():
#item = QtGui.QTreeWidgetItem([key])
if isinstance(val, basestring):
#item.file = val
files.append((key,val))
else:
buildFileList(val, files)
return files
def testFile(name, f, exe, lib, graphicsSystem=None):
global path
fn = os.path.join(path,f)
#print "starting process: ", fn
os.chdir(path)
sys.stdout.write(name)
sys.stdout.flush()
import1 = "import %s" % lib if lib != '' else ''
import2 = os.path.splitext(os.path.split(fn)[1])[0]
graphicsSystem = '' if graphicsSystem is None else "pg.QtGui.QApplication.setGraphicsSystem('%s')" % graphicsSystem
code = """
try:
%s
import initExample
import pyqtgraph as pg
%s
import %s
import sys
print("test complete")
sys.stdout.flush()
import time
while True: ## run a little event loop
pg.QtGui.QApplication.processEvents()
time.sleep(0.01)
except:
print("test failed")
raise
""" % (import1, graphicsSystem, import2)
process = subprocess.Popen(['exec %s -i' % (exe)], shell=True, stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
process.stdin.write(code.encode('UTF-8'))
#process.stdin.close()
output = ''
fail = False
while True:
c = process.stdout.read(1).decode()
output += c
#sys.stdout.write(c)
#sys.stdout.flush()
if output.endswith('test complete'):
break
if output.endswith('test failed'):
fail = True
break
time.sleep(1)
process.kill()
#process.wait()
res = process.communicate()
if fail or 'exception' in res[1].decode().lower() or 'error' in res[1].decode().lower():
print('.' * (50-len(name)) + 'FAILED')
print(res[0].decode())
print(res[1].decode())
else:
print('.' * (50-len(name)) + 'passed')
if __name__ == '__main__':
if '--test' in sys.argv[1:]:
files = buildFileList(examples)
if '--pyside' in sys.argv[1:]:
lib = 'PySide'
elif '--pyqt' in sys.argv[1:]:
lib = 'PyQt4'
else:
lib = ''
exe = sys.executable
print("Running tests:", lib, sys.executable)
for f in files:
testFile(f[0], f[1], exe, lib)
else:
run()