import os import sys import subprocess import pyqtgraph as pg from pyqtgraph.python2_3 import basestring from pyqtgraph.Qt import QtGui, QtCore, QT_LIB from pyqtgraph.pgcollections import OrderedDict path = os.path.abspath(os.path.dirname(__file__)) sys.path.insert(0, path) app = pg.mkQApp() if QT_LIB == 'PySide': from exampleLoaderTemplate_pyside import Ui_Form elif QT_LIB == 'PySide2': from exampleLoaderTemplate_pyside2 import Ui_Form elif QT_LIB == 'PyQt5': from exampleLoaderTemplate_pyqt5 import Ui_Form else: from exampleLoaderTemplate_pyqt import Ui_Form 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'), ('Timestamps on x axis', 'DateAxisItem.py'), ('Image Analysis', 'imageAnalysis.py'), ('ViewBox Features', 'ViewBoxFeatures.py'), ('Dock widgets', 'dockarea.py'), ('Console', 'ConsoleWidget.py'), ('Histograms', 'histogram.py'), ('Beeswarm plot', 'beeswarm.py'), ('Symbols', 'Symbols.py'), ('Auto-range', 'PlotAutoRange.py'), ('Remote Plotting', 'RemoteSpeedTest.py'), ('Scrolling plots', 'scrollingPlots.py'), ('HDF5 big data', 'hdf5.py'), ('Demos', OrderedDict([ ('Optics', 'optics_demos.py'), ('Special relativity', 'relativity_demo.py'), ('Verlet chain', 'verlet_chain_demo.py'), ('Koch Fractal', 'fractal.py'), ])), ('GraphicsItems', OrderedDict([ ('Scatter Plot', 'ScatterPlot.py'), #('PlotItem', 'PlotItem.py'), ('IsocurveItem', 'isocurve.py'), ('GraphItem', 'GraphItem.py'), ('ErrorBarItem', 'ErrorBarItem.py'), ('FillBetweenItem', 'FillBetweenItem.py'), ('ImageItem - video', 'ImageItem.py'), ('ImageItem - draw', 'Draw.py'), ('Region-of-Interest', 'ROIExamples.py'), ('Bar Graph', 'BarGraphItem.py'), ('GraphicsLayout', 'GraphicsLayout.py'), ('LegendItem', 'Legend.py'), ('Text Item', 'text.py'), ('Linked Views', 'linkedViews.py'), ('Arrow', 'Arrow.py'), ('ViewBox', 'ViewBoxFeatures.py'), ('Custom Graphics', 'customGraphicsItem.py'), ('Labeled Graph', 'CustomGraphItem.py'), ])), ('Benchmarks', OrderedDict([ ('Video speed test', 'VideoSpeedTest.py'), ('Line Plot update', 'PlotSpeedTest.py'), ('Scatter Plot update', 'ScatterPlotSpeedTest.py'), ('Multiple plots', 'MultiPlotSpeedTest.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'), ('Histogram / lookup table', 'HistogramLUT.py'), ('TreeWidget', 'TreeWidget.py'), ('ScatterPlotWidget', 'ScatterPlotWidget.py'), ('DataTreeWidget', 'DataTreeWidget.py'), ('GradientWidget', 'GradientWidget.py'), ('TableWidget', 'TableWidget.py'), ('ColorButton', 'ColorButton.py'), #('CheckTable', '../widgets/CheckTable.py'), #('VerticalLabel', '../widgets/VerticalLabel.py'), ('JoystickButton', 'JoystickButton.py'), ])), ('Flowcharts', 'Flowchart.py'), ('Custom Flowchart Nodes', 'FlowchartCustomNode.py'), ]) # based on https://github.com/art1415926535/PyQt5-syntax-highlighting QRegExp = QtCore.QRegExp QFont = QtGui.QFont QColor = QtGui.QColor QTextCharFormat = QtGui.QTextCharFormat QSyntaxHighlighter = QtGui.QSyntaxHighlighter def format(color, style=''): """ Return a QTextCharFormat with the given attributes. """ _color = QColor() if type(color) is not str: _color.setRgb(color[0], color[1], color[2]) else: _color.setNamedColor(color) _format = QTextCharFormat() _format.setForeground(_color) if 'bold' in style: _format.setFontWeight(QFont.Bold) if 'italic' in style: _format.setFontItalic(True) return _format class LightThemeColors: Red = "#B71C1C" Pink = "#FCE4EC" Purple = "#4A148C" DeepPurple = "#311B92" Indigo = "#1A237E" Blue = "#0D47A1" LightBlue = "#01579B" Cyan = "#006064" Teal = "#004D40" Green = "#1B5E20" LightGreen = "#33691E" Lime = "#827717" Yellow = "#F57F17" Amber = "#FF6F00" Orange = "#E65100" DeepOrange = "#BF360C" Brown = "#3E2723" Grey = "#212121" BlueGrey = "#263238" class DarkThemeColors: Red = "#F44336" Pink = "#F48FB1" Purple = "#CE93D8" DeepPurple = "#B39DDB" Indigo = "#9FA8DA" Blue = "#90CAF9" LightBlue = "#81D4FA" Cyan = "#80DEEA" Teal = "#80CBC4" Green = "#A5D6A7" LightGreen = "#C5E1A5" Lime = "#E6EE9C" Yellow = "#FFF59D" Amber = "#FFE082" Orange = "#FFCC80" DeepOrange = "#FFAB91" Brown = "#BCAAA4" Grey = "#EEEEEE" BlueGrey = "#B0BEC5" LIGHT_STYLES = { 'keyword': format(LightThemeColors.Blue, 'bold'), 'operator': format(LightThemeColors.Red, 'bold'), 'brace': format(LightThemeColors.Purple), 'defclass': format(LightThemeColors.Indigo, 'bold'), 'string': format(LightThemeColors.Amber), 'string2': format(LightThemeColors.DeepPurple), 'comment': format(LightThemeColors.Green, 'italic'), 'self': format(LightThemeColors.Blue, 'bold'), 'numbers': format(LightThemeColors.Teal), } DARK_STYLES = { 'keyword': format(DarkThemeColors.Blue, 'bold'), 'operator': format(DarkThemeColors.Red, 'bold'), 'brace': format(DarkThemeColors.Purple), 'defclass': format(DarkThemeColors.Indigo, 'bold'), 'string': format(DarkThemeColors.Amber), 'string2': format(DarkThemeColors.DeepPurple), 'comment': format(DarkThemeColors.Green, 'italic'), 'self': format(DarkThemeColors.Blue, 'bold'), 'numbers': format(DarkThemeColors.Teal), } class PythonHighlighter(QSyntaxHighlighter): """Syntax highlighter for the Python language. """ # Python keywords keywords = [ 'and', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'exec', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'not', 'or', 'pass', 'print', 'raise', 'return', 'try', 'while', 'yield', 'None', 'True', 'False', 'async', 'await', ] # Python operators operators = [ '=', # Comparison '==', '!=', '<', '<=', '>', '>=', # Arithmetic '\+', '-', '\*', '/', '//', '\%', '\*\*', # In-place '\+=', '-=', '\*=', '/=', '\%=', # Bitwise '\^', '\|', '\&', '\~', '>>', '<<', ] # Python braces braces = [ '\{', '\}', '\(', '\)', '\[', '\]', ] def __init__(self, document): QSyntaxHighlighter.__init__(self, document) # Multi-line strings (expression, flag, style) # FIXME: The triple-quotes in these two lines will mess up the # syntax highlighting from this point onward self.tri_single = (QRegExp("'''"), 1, 'string2') self.tri_double = (QRegExp('"""'), 2, 'string2') rules = [] # Keyword, operator, and brace rules rules += [(r'\b%s\b' % w, 0, 'keyword') for w in PythonHighlighter.keywords] rules += [(r'%s' % o, 0, 'operator') for o in PythonHighlighter.operators] rules += [(r'%s' % b, 0, 'brace') for b in PythonHighlighter.braces] # All other rules rules += [ # 'self' (r'\bself\b', 0, 'self'), # 'def' followed by an identifier (r'\bdef\b\s*(\w+)', 1, 'defclass'), # 'class' followed by an identifier (r'\bclass\b\s*(\w+)', 1, 'defclass'), # Numeric literals (r'\b[+-]?[0-9]+[lL]?\b', 0, 'numbers'), (r'\b[+-]?0[xX][0-9A-Fa-f]+[lL]?\b', 0, 'numbers'), (r'\b[+-]?[0-9]+(?:\.[0-9]+)?(?:[eE][+-]?[0-9]+)?\b', 0, 'numbers'), # Double-quoted string, possibly containing escape sequences (r'"[^"\\]*(\\.[^"\\]*)*"', 0, 'string'), # Single-quoted string, possibly containing escape sequences (r"'[^'\\]*(\\.[^'\\]*)*'", 0, 'string'), # From '#' until a newline (r'#[^\n]*', 0, 'comment'), ] # Build a QRegExp for each pattern self.rules = [(QRegExp(pat), index, fmt) for (pat, index, fmt) in rules] @property def styles(self): app = QtGui.QApplication.instance() return DARK_STYLES if app.dark_mode else LIGHT_STYLES def highlightBlock(self, text): """Apply syntax highlighting to the given block of text. """ # Do other syntax formatting for expression, nth, format in self.rules: index = expression.indexIn(text, 0) format = self.styles[format] while index >= 0: # We actually want the index of the nth match index = expression.pos(nth) length = len(expression.cap(nth)) self.setFormat(index, length, format) index = expression.indexIn(text, index + length) self.setCurrentBlockState(0) # Do multi-line strings in_multiline = self.match_multiline(text, *self.tri_single) if not in_multiline: in_multiline = self.match_multiline(text, *self.tri_double) def match_multiline(self, text, delimiter, in_state, style): """Do highlighting of multi-line strings. ``delimiter`` should be a ``QRegExp`` for triple-single-quotes or triple-double-quotes, and ``in_state`` should be a unique integer to represent the corresponding state changes when inside those strings. Returns True if we're still inside a multi-line string when this function is finished. """ # If inside triple-single quotes, start at 0 if self.previousBlockState() == in_state: start = 0 add = 0 # Otherwise, look for the delimiter on this line else: start = delimiter.indexIn(text) # Move past this match add = delimiter.matchedLength() # As long as there's a delimiter match on this line... while start >= 0: # Look for the ending delimiter end = delimiter.indexIn(text, start + add) # Ending delimiter on this line? if end >= add: length = end - start + add + delimiter.matchedLength() self.setCurrentBlockState(0) # No; multi-line string else: self.setCurrentBlockState(in_state) length = len(text) - start + add # Apply formatting self.setFormat(start, length, self.styles[style]) # Look for the next match start = delimiter.indexIn(text, start + length) # Return True if still inside a multi-line string, False otherwise if self.currentBlockState() == in_state: return True else: return False 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) self.setWindowTitle("PyQtGraph Examples") self.codeBtn = QtGui.QPushButton('Run Edited Code') self.codeLayout = QtGui.QGridLayout() self.ui.codeView.setLayout(self.codeLayout) self.hl = PythonHighlighter(self.ui.codeView.document()) app = QtGui.QApplication.instance() if QT_LIB in ['PyQt5', 'PySide2']: # Qt4 does not have a paletteChanged signal app.paletteChanged.connect(self.updateTheme) self.codeLayout.addItem(QtGui.QSpacerItem(100,100,QtGui.QSizePolicy.Expanding,QtGui.QSizePolicy.Expanding), 0, 0) self.codeLayout.addWidget(self.codeBtn, 1, 1) self.codeBtn.hide() global examples self.itemCache = [] 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.codeView.textChanged.connect(self.codeEdited) self.codeBtn.clicked.connect(self.runEditedCode) def simulate_black_mode(self): """ used to simulate MacOS "black mode" on other platforms intended for debug only, as it manage only the QPlainTextEdit """ # first, a dark background c = QtGui.QColor('#171717') p = self.ui.codeView.palette() p.setColor(QtGui.QPalette.Active, QtGui.QPalette.Base, c) p.setColor(QtGui.QPalette.Inactive, QtGui.QPalette.Base, c) self.ui.codeView.setPalette(p) # then, a light font f = QtGui.QTextCharFormat() f.setForeground(QtGui.QColor('white')) self.ui.codeView.setCurrentCharFormat(f) # finally, override application automatic detection app = QtGui.QApplication.instance() app.dark_mode = True def updateTheme(self): self.hl = PythonHighlighter(self.ui.codeView.document()) def populateTree(self, root, examples): for key, val in examples.items(): item = QtGui.QTreeWidgetItem([key]) self.itemCache.append(item) # PyQt 4.9.6 no longer keeps references to these wrappers, # so we need to make an explicit reference or else the .file # attribute will disappear. 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, edited=False): extra = [] qtLib = str(self.ui.qtLibCombo.currentText()) gfxSys = str(self.ui.graphicsSystemCombo.currentText()) if qtLib != 'default': extra.append(qtLib.lower()) elif gfxSys != 'default': extra.append(gfxSys) if edited: path = os.path.abspath(os.path.dirname(__file__)) proc = subprocess.Popen([sys.executable, '-'] + extra, stdin=subprocess.PIPE, cwd=path) code = str(self.ui.codeView.toPlainText()).encode('UTF-8') proc.stdin.write(code) proc.stdin.close() else: fn = self.currentFile() 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) self.ui.loadedFileLabel.setText(fn) self.codeBtn.hide() def codeEdited(self): self.codeBtn.show() def runEditedCode(self): self.loadFile(edited=True) def main(): app = pg.mkQApp() loader = ExampleLoader() app.exec_() # or condition so pytest runs ExampleApp as part of test suite if __name__ == '__main__': if (sys.flags.interactive != 1) or not hasattr(QtCore, 'PYQT_VERSION'): main()