class IPythonView(QtGui.QWidget):
def __init__(self, parent=None, getfocus=None):
super(IPythonView, self).__init__(parent)
# Create an in-process kernel
self.kernel_manager = QtInProcessKernelManager()
self.kernel_manager.start_kernel()
self.kernel = self.kernel_manager.kernel
self.kernel.gui = 'qt4'
self.shell = self.kernel.shell
self.kernel_client = self.kernel_manager.client()
self.kernel_client.start_channels()
self.control = RichIPythonWidget()
self.control.set_default_style(colors='linux')
self.control.kernel_manager = self.kernel_manager
self.control.kernel_client = self.kernel_client
self.control.exit_requested.connect(self.stop)
# Enable Pylab mode.
self.shell.enable_pylab()
self.shell.automagic = True
# Add some variables in the namespace.
self.push(galry=galry)
box = QtGui.QVBoxLayout()
box.addWidget(self.control)
box.setContentsMargins(0, 0, 0, 0)
box.setSpacing(0)
self.setLayout(box)
def stop(self, *args):
self.kernel_client.stop_channels()
self.kernel_manager.shutdown_kernel()
# Public methods.
# ---------------
def set_data(self, **kwargs):
self.push(**kwargs)
def push(self, **kwargs):
"""Inject variables in the interactive namespace."""
self.shell.push(kwargs)
def run_file(self, file):
"""Execute a Python file in the interactive namespace."""
self.shell.safe_execfile(file, self.shell.user_global_ns)
def run_cell(self, *args, **kwargs):
"""Execute a cell."""
self.shell.run_cell(*args, **kwargs)
class IPythonView(QtGui.QWidget):
def __init__(self, parent=None, getfocus=None):
super(IPythonView, self).__init__(parent)
# Create an in-process kernel
self.kernel_manager = QtInProcessKernelManager()
self.kernel_manager.start_kernel()
self.kernel = self.kernel_manager.kernel
self.kernel.gui = 'qt4'
self.shell = self.kernel.shell
self.kernel_client = self.kernel_manager.client()
self.kernel_client.start_channels()
self.control = RichIPythonWidget()
self.control.set_default_style(colors='linux')
self.control.kernel_manager = self.kernel_manager
self.control.kernel_client = self.kernel_client
self.control.exit_requested.connect(self.stop)
# Enable Pylab mode.
self.shell.enable_pylab()
self.shell.automagic = True
# Add some variables in the namespace.
self.push(galry=galry)
box = QtGui.QVBoxLayout()
box.addWidget(self.control)
box.setContentsMargins(0, 0, 0, 0)
box.setSpacing(0)
self.setLayout(box)
def stop(self, *args):
self.kernel_client.stop_channels()
self.kernel_manager.shutdown_kernel()
# Public methods.
# ---------------
def set_data(self, **kwargs):
self.push(**kwargs)
def push(self, **kwargs):
"""Inject variables in the interactive namespace."""
self.shell.push(kwargs)
def run_file(self, file):
"""Execute a Python file in the interactive namespace."""
self.shell.safe_execfile(file, self.shell.user_global_ns)
def run_cell(self, *args, **kwargs):
"""Execute a cell."""
self.shell.run_cell(*args, **kwargs)
class QtipWindow(QtGui.QMainWindow):
"""
Main Qtip window
Note, is the main window now, but the content will later be moved to a
libstempo tab, as part of the Piccard suite
"""
def __init__(self, parent=None, engine='libstempo', \
parfile=None, timfile=None, **kwargs):
super(QtipWindow, self).__init__(parent)
self.setWindowTitle('QtIpython interface to Piccard/libstempo')
# Initialise basic gui elements
self.initUI()
# Start the embedded IPython kernel
self.createIPythonKernel()
# Create the display widgets
self.createBinaryWidget()
self.createPlkWidget()
self.createIPythonWidget()
self.createOpenSomethingWidget()
# Position the widgets
self.initQtipLayout()
self.setQtipLayout(whichWidget='opensomething',
showIPython=False, firsttime=True)
# We are still in MAJOR testing mode, so open a test-pulsar right away
# (delete this line when going into production)
if parfile is None or timfile is None:
testpulsar = True
else:
testpulsar = False
# Are we going to open plk straight away?
self.requestOpenPlk(testpulsar=testpulsar, parfilename=parfile, \
timfilename=timfile, engine=engine)
self.show()
def __del__(self):
pass
def onAbout(self):
msg = """ A plk emulator, written in Python. Powered by PyQt, matplotlib, libstempo, and IPython:
"""
QtGui.QMessageBox.about(self, "About the demo", msg.strip())
def initUI(self):
"""
Initialise the user-interface elements
"""
# Create the main-frame widget, and the layout
self.mainFrame = QtGui.QWidget()
self.setCentralWidget(self.mainFrame)
self.hbox = QtGui.QHBoxLayout() # HBox contains all widgets
# Create the menu action items
self.openParTimAction = QtGui.QAction('&Open', self)
self.openParTimAction.setShortcut('Ctrl+O')
self.openParTimAction.setStatusTip('Open par/tim')
self.openParTimAction.triggered.connect(self.openParTim)
self.exitAction = QtGui.QAction(QtGui.QIcon('exit.png'), '&Exit', self)
self.exitAction.setShortcut('Ctrl+Q')
self.exitAction.setStatusTip('Exit application')
self.exitAction.triggered.connect(self.close)
self.toggleBinaryAction = QtGui.QAction('&Binary', self)
self.toggleBinaryAction.setShortcut('Ctrl+B')
self.toggleBinaryAction.setStatusTip('Toggle binary widget')
self.toggleBinaryAction.triggered.connect(self.toggleBinary)
self.togglePlkAction = QtGui.QAction('&Plk', self)
self.togglePlkAction.setShortcut('Ctrl+P')
self.togglePlkAction.setStatusTip('Toggle plk widget')
self.togglePlkAction.triggered.connect(self.togglePlk)
self.toggleIPythonAction = QtGui.QAction('&IPython', self)
self.toggleIPythonAction.setShortcut('Ctrl+I')
self.toggleIPythonAction.setStatusTip('Toggle IPython')
self.toggleIPythonAction.triggered.connect(self.toggleIPython)
self.aboutAction = QtGui.QAction('&About', self)
self.aboutAction.setShortcut('Ctrl+A')
self.aboutAction.setStatusTip('About Qtip')
self.aboutAction.triggered.connect(self.onAbout)
self.theStatusBar = QtGui.QStatusBar()
#self.statusBar()
self.setStatusBar(self.theStatusBar)
self.engine_label = QtGui.QLabel("Tempo2")
self.engine_label.setFrameStyle( QtGui.QFrame.Sunken|QtGui.QFrame.Panel)
self.engine_label.setLineWidth(4)
self.engine_label.setMidLineWidth(4)
self.engine_label.setStyleSheet("QLabel{color:black;background-color:red}")
self.theStatusBar.addPermanentWidget(self.engine_label)
# On OSX, make sure the menu can be displayed (in the window itself)
if sys.platform == 'darwin':
# On OSX, the menubar is usually on the top of the screen, not in
# the window. To make it in the window:
QtGui.qt_mac_set_native_menubar(False)
# Otherwise, if we'd like to get the system menubar at the top, then
# we need another menubar object, not self.menuBar as below. In that
# case, use:
# self.menubar = QtGui.QMenuBar()
# TODO: Somehow this does not work. Per-window one does though
# Create the menu
self.menubar = self.menuBar()
self.fileMenu = self.menubar.addMenu('&File')
self.fileMenu.addAction(self.openParTimAction)
self.fileMenu.addAction(self.exitAction)
self.viewMenu = self.menubar.addMenu('&View')
self.viewMenu.addAction(self.toggleBinaryAction)
self.viewMenu.addAction(self.togglePlkAction)
self.viewMenu.addAction(self.toggleIPythonAction)
self.helpMenu = self.menubar.addMenu('&Help')
self.helpMenu.addAction(self.aboutAction)
# What is the status quo of the user interface?
self.showIPython = False
self.whichWidget = 'None'
self.prevShowIPython = None
self.prevWhichWidget = 'None'
def createIPythonKernel(self):
"""
Create the IPython Kernel
"""
# Create an in-process kernel
self.kernelManager = QtInProcessKernelManager()
self.kernelManager.start_kernel()
self.kernel = self.kernelManager.kernel
self.kernelClient = self.kernelManager.client()
self.kernelClient.start_channels()
self.kernel.shell.enable_matplotlib(gui='inline')
# Load the necessary packages in the embedded kernel
cell = "import numpy as np, matplotlib.pyplot as plt, qtpulsar as qp"
self.kernel.shell.run_cell(cell, store_history=False)
# Set the in-kernel matplotlib color scheme to black.
self.setMplColorScheme('black') # Outside as well (do we need this?)
self.kernel.shell.run_cell(constants.matplotlib_rc_cell_black,
store_history=False)
def createIPythonWidget(self):
"""
Create the IPython widget
"""
self.consoleWidget = RichIPythonWidget()
#self.consoleWidget.setMinimumSize(600, 550)
self.consoleWidget.banner = QtipBanner
self.consoleWidget.kernel_manager = self.kernelManager
self.consoleWidget.kernel_client = self.kernelClient
self.consoleWidget.exit_requested.connect(self.toggleIPython)
self.consoleWidget.set_default_style(colors='linux')
self.consoleWidget.hide()
# Register a call-back function for the IPython shell. This one is
# executed insite the child-kernel.
#self.kernel.shell.register_post_execute(self.postExecute)
#
# In IPython >= 2, we can use the event register
# Events: post_run_cell, pre_run_cell, etc...`
self.kernel.shell.events.register('pre_execute', self.preExecute)
self.kernel.shell.events.register('post_execute', self.postExecute)
self.kernel.shell.events.register('post_run_cell', self.postRunCell)
def createOpenSomethingWidget(self):
"""
Create the OpenSomething widget. Do not add it to the layout yet
TODO: probably should use a signal to implement this call instead of
openParTim
"""
self.openSomethingWidget = OpenSomethingWidget(parent=self.mainFrame, \
openFile=self.requestOpenPlk)
self.openSomethingWidget.hide()
def createPlkWidget(self):
"""
Create the Plk widget
"""
self.plkWidget = PlkWidget(parent=self.mainFrame)
self.plkWidget.hide()
def createBinaryWidget(self):
"""
Create the binary model widget
"""
self.binaryWidget = BinaryWidget(parent=self.mainFrame)
self.binaryWidget.hide()
def toggleIPython(self):
"""
Toggle the IPython widget on or off
"""
self.setQtipLayout(showIPython = not self.showIPython)
def toggleBinary(self):
"""
Toggle the binary model widget on or off
"""
self.setQtipLayout(whichWidget='binary')
def togglePlk(self):
"""
Toggle the plk widget on or off
"""
self.setQtipLayout(whichWidget='plk')
def initQtipLayout(self):
"""
Initialise the Qtip layout
"""
self.hbox.addWidget(self.openSomethingWidget)
self.hbox.addWidget(self.plkWidget)
self.hbox.addWidget(self.binaryWidget)
self.hbox.addStretch(1)
self.hbox.addWidget(self.consoleWidget)
self.mainFrame.setLayout(self.hbox)
def hideAllWidgets(self):
"""
Hide all widgets of the mainFrame
"""
# Remove all widgets from the main window
# ???
"""
while self.hbox.count():
item = self.hbox.takeAt(0)
if isinstance(item, QtGui.QWidgetItem):
#item.widget().deleteLater()
item.widget().hide()
elif isinstance(item, QtGui.QSpacerItem):
#self.hbox.removeItem(item)
pass
else:
#fcbox.clearLayout(item.layout())
#self.hbox.removeItem(item)
pass
"""
self.openSomethingWidget.hide()
self.plkWidget.hide()
self.binaryWidget.hide()
self.consoleWidget.hide()
def showVisibleWidgets(self):
"""
Show the correct widgets in the mainFrame
"""
# Add the widgets we need
if self.whichWidget.lower() == 'opensomething':
self.openSomethingWidget.show()
elif self.whichWidget.lower() == 'plk':
self.plkWidget.show()
elif self.whichWidget.lower() == 'piccard':
pass
elif self.whichWidget.lower() == 'binary':
self.binaryWidget.show()
if self.showIPython:
self.consoleWidget.show()
else:
pass
if self.whichWidget.lower() == 'plk' and not self.showIPython:
self.plkWidget.setFocusToCanvas()
elif self.whichWidget.lower() == 'binary' and not self.showIPython:
self.binaryWidget.setFocusToCanvas()
#elif self.showIPython:
# self.consoleWidget.setFocus()
def setQtipLayout(self, whichWidget=None, showIPython=None, firsttime=False):
"""
Given which widgets to show, display the right widgets and hide the rest
@param whichWidget: Which widget to show
@param showIPython: Whether to show the IPython console
"""
if not whichWidget is None:
self.whichWidget = whichWidget
if not showIPython is None:
self.showIPython = showIPython
# After hiding the widgets, wait 25 (or 0?) miliseconds before showing them again
self.hideAllWidgets()
QtCore.QTimer.singleShot(0, self.showVisibleWidgets)
self.prevWhichWidget = self.whichWidget
if self.showIPython != self.prevShowIPython:
# IPython has been toggled
self.prevShowIPython = self.showIPython
if self.showIPython:
self.resize(1350, 550)
self.mainFrame.resize(1350, 550)
else:
self.resize(650, 550)
self.mainFrame.resize(650, 550)
if firsttime:
# Set position slightly more to the left of the screen, so we can
# still open IPython
self.move(200, 100)
self.mainFrame.setLayout(self.hbox)
self.mainFrame.show()
def requestOpenPlk(self, parfilename=None, timfilename=None, \
testpulsar=False, engine='libstempo'):
"""
Request to open a file in the plk widget
@param parfilename: The parfile to open. If none, ask the user
@param timfilename: The timfile to open. If none, ask the user
"""
self.setQtipLayout(whichWidget='plk', showIPython=self.showIPython)
if parfilename is None and not testpulsar:
parfilename = QtGui.QFileDialog.getOpenFileName(self, 'Open par-file', '~/')
if timfilename is None and not testpulsar:
timfilename = QtGui.QFileDialog.getOpenFileName(self, 'Open tim-file', '~/')
# Load the pulsar
self.openPulsar(parfilename, timfilename, engine=engine, \
testpulsar=testpulsar)
def setMplColorScheme(self, scheme):
"""
Set the matplotlib color scheme
@param scheme: 'black'/'white', the color scheme
"""
# Obtain the Widget background color
color = self.palette().color(QtGui.QPalette.Window)
r, g, b = color.red(), color.green(), color.blue()
rgbcolor = (r/255.0, g/255.0, b/255.0)
if scheme == 'white':
rcP = constants.mpl_rcParams_white
rcP['axes.facecolor'] = rgbcolor
rcP['figure.facecolor'] = rgbcolor
rcP['figure.edgecolor'] = rgbcolor
rcP['savefig.facecolor'] = rgbcolor
rcP['savefig.edgecolor'] = rgbcolor
elif scheme == 'black':
rcP = constants.mpl_rcParams_black
for key, value in rcP.iteritems():
matplotlib.rcParams[key] = value
def openParTim(self, filename=None, engine='libstempo'):
"""
Open a par-file and a tim-file
"""
print("openParTim called with {0}".format(filename))
# Ask the user for a par and tim file, and open these with libstempo
if isinstance(filename, str):
parfilename = filename
else:
parfilename = QtGui.QFileDialog.getOpenFileName(self, 'Open par-file', '~/')
timfilename = QtGui.QFileDialog.getOpenFileName(self, 'Open tim-file', '~/')
# Load the pulsar
self.openPulsar(parfilename, timfilename, engine=engine)
def openPulsar(self, parfilename, timfilename, engine='libstempo',
testpulsar=False):
"""
Open a pulsar, given a parfile and a timfile
@param parfilename: The name of the parfile to open
@param timfilename: The name fo the timfile to open
@param engine: Which pulsar timing engine to use [libstempo]
@param testpulsar: If True, open the test pulsar (J1744, NANOGrav)
"""
if engine=='pint':
trypint = True
else:
trypint = False
self.engine, pclass = qp.get_engine(trypint=trypint)
if engine == 'libstempo':
if not testpulsar:
# Obtain the directory name of the timfile, and change to it
timfiletup = os.path.split(timfilename)
dirname = timfiletup[0]
reltimfile = timfiletup[-1]
relparfile = os.path.relpath(parfilename, dirname)
savedir = os.getcwd()
# Change directory to the base directory of the tim-file to deal with
# INCLUDE statements in the tim-file
os.chdir(dirname)
# Load the pulsar
cell = "psr = qp."+pclass+"('"+relparfile+"', '"+reltimfile+"')"
self.kernel.shell.run_cell(cell)
psr = self.kernel.shell.ns_table['user_local']['psr']
# Change directory back to where we were
os.chdir(savedir)
else:
cell = "psr = qp."+pclass+"(testpulsar=True)"
self.kernel.shell.run_cell(cell)
psr = self.kernel.shell.ns_table['user_local']['psr']
elif engine == 'pint':
cell = "psr = qp."+pclass+"(testpulsar=True)"
self.kernel.shell.run_cell(cell)
psr = self.kernel.shell.ns_table['user_local']['psr']
else:
raise NotImplemented("Only works with PINT/libstempo")
# Update the plk widget
self.plkWidget.setPulsar(psr)
self.binaryWidget.setPulsar(psr)
# Communicating with the kernel goes as follows
# self.kernel.shell.push({'foo': 43, 'print_process_id': print_process_id}, interactive=True)
# print("Embedded, we have:", self.kernel.shell.ns_table['user_local']['foo'])
def keyPressEvent(self, event, **kwargs):
"""
Handle a key-press event
@param event: event that is handled here
"""
key = event.key()
if key == QtCore.Qt.Key_Escape:
self.close()
elif key == QtCore.Qt.Key_Left:
#print("Left pressed")
pass
else:
#print("Other key")
pass
#print("QtipWindow: key press")
super(QtipWindow, self).keyPressEvent(event, **kwargs)
def mousePressEvent(self, event, **kwargs):
"""
Handle a mouse-click event
@param event: event that is handled here
"""
#print("QtipWindow: mouse click")
super(QtipWindow, self).mousePressEvent(event, **kwargs)
def preExecute(self):
"""
Callback function that is run prior to execution of a cell
"""
pass
def postExecute(self):
"""
Callback function that is run after execution of a code
"""
pass
def postRunCell(self):
"""
Callback function that is run after execution of a cell (after
post-execute)
"""
# TODO: Do more than just update the plot, but also update _all_ the
# widgets. Make a callback in plkWidget for that. QtipWindow might also
# want to loop over some stuff.
if self.whichWidget == 'plk':
self.plkWidget.updatePlot()
elif self.whichWidget == 'binary':
self.binaryWidget.updatePlot()
class QtipWindow(QtGui.QMainWindow):
"""
Main Qtip window
Note, is the main window now, but the content will later be moved to a
libstempo tab, as part of the Piccard suite
"""
def __init__(self, parent=None, engine='libstempo', \
parfile=None, timfile=None, **kwargs):
super(QtipWindow, self).__init__(parent)
self.setWindowTitle('QtIpython interface to Piccard/libstempo')
# Initialise basic gui elements
self.initUI()
# Start the embedded IPython kernel
self.createIPythonKernel()
# Create the display widgets
self.createBinaryWidget()
self.createPlkWidget()
self.createIPythonWidget()
self.createOpenSomethingWidget()
# Position the widgets
self.initQtipLayout()
self.setQtipLayout(whichWidget='opensomething',
showIPython=False,
firsttime=True)
# We are still in MAJOR testing mode, so open a test-pulsar right away
# (delete this line when going into production)
if parfile is None or timfile is None:
testpulsar = True
else:
testpulsar = False
# Are we going to open plk straight away?
self.requestOpenPlk(testpulsar=testpulsar, parfilename=parfile, \
timfilename=timfile, engine=engine)
self.show()
def __del__(self):
pass
def onAbout(self):
msg = """ A plk emulator, written in Python. Powered by PyQt, matplotlib, libstempo, and IPython:
"""
QtGui.QMessageBox.about(self, "About the demo", msg.strip())
def initUI(self):
"""
Initialise the user-interface elements
"""
# Create the main-frame widget, and the layout
self.mainFrame = QtGui.QWidget()
self.setCentralWidget(self.mainFrame)
self.hbox = QtGui.QHBoxLayout() # HBox contains all widgets
# Create the menu action items
self.openParTimAction = QtGui.QAction('&Open', self)
self.openParTimAction.setShortcut('Ctrl+O')
self.openParTimAction.setStatusTip('Open par/tim')
self.openParTimAction.triggered.connect(self.openParTim)
self.exitAction = QtGui.QAction(QtGui.QIcon('exit.png'), '&Exit', self)
self.exitAction.setShortcut('Ctrl+Q')
self.exitAction.setStatusTip('Exit application')
self.exitAction.triggered.connect(self.close)
self.toggleBinaryAction = QtGui.QAction('&Binary', self)
self.toggleBinaryAction.setShortcut('Ctrl+B')
self.toggleBinaryAction.setStatusTip('Toggle binary widget')
self.toggleBinaryAction.triggered.connect(self.toggleBinary)
self.togglePlkAction = QtGui.QAction('&Plk', self)
self.togglePlkAction.setShortcut('Ctrl+P')
self.togglePlkAction.setStatusTip('Toggle plk widget')
self.togglePlkAction.triggered.connect(self.togglePlk)
self.toggleIPythonAction = QtGui.QAction('&IPython', self)
self.toggleIPythonAction.setShortcut('Ctrl+I')
self.toggleIPythonAction.setStatusTip('Toggle IPython')
self.toggleIPythonAction.triggered.connect(self.toggleIPython)
self.aboutAction = QtGui.QAction('&About', self)
self.aboutAction.setShortcut('Ctrl+A')
self.aboutAction.setStatusTip('About Qtip')
self.aboutAction.triggered.connect(self.onAbout)
self.theStatusBar = QtGui.QStatusBar()
#self.statusBar()
self.setStatusBar(self.theStatusBar)
self.engine_label = QtGui.QLabel("Tempo2")
self.engine_label.setFrameStyle(QtGui.QFrame.Sunken
| QtGui.QFrame.Panel)
self.engine_label.setLineWidth(4)
self.engine_label.setMidLineWidth(4)
self.engine_label.setStyleSheet(
"QLabel{color:black;background-color:red}")
self.theStatusBar.addPermanentWidget(self.engine_label)
# On OSX, make sure the menu can be displayed (in the window itself)
if sys.platform == 'darwin':
# On OSX, the menubar is usually on the top of the screen, not in
# the window. To make it in the window:
QtGui.qt_mac_set_native_menubar(False)
# Otherwise, if we'd like to get the system menubar at the top, then
# we need another menubar object, not self.menuBar as below. In that
# case, use:
# self.menubar = QtGui.QMenuBar()
# TODO: Somehow this does not work. Per-window one does though
# Create the menu
self.menubar = self.menuBar()
self.fileMenu = self.menubar.addMenu('&File')
self.fileMenu.addAction(self.openParTimAction)
self.fileMenu.addAction(self.exitAction)
self.viewMenu = self.menubar.addMenu('&View')
self.viewMenu.addAction(self.toggleBinaryAction)
self.viewMenu.addAction(self.togglePlkAction)
self.viewMenu.addAction(self.toggleIPythonAction)
self.helpMenu = self.menubar.addMenu('&Help')
self.helpMenu.addAction(self.aboutAction)
# What is the status quo of the user interface?
self.showIPython = False
self.whichWidget = 'None'
self.prevShowIPython = None
self.prevWhichWidget = 'None'
def createIPythonKernel(self):
"""
Create the IPython Kernel
"""
# Create an in-process kernel
self.kernelManager = QtInProcessKernelManager()
self.kernelManager.start_kernel()
self.kernel = self.kernelManager.kernel
self.kernelClient = self.kernelManager.client()
self.kernelClient.start_channels()
self.kernel.shell.enable_matplotlib(gui='inline')
# Load the necessary packages in the embedded kernel
cell = "import numpy as np, matplotlib.pyplot as plt, qtpulsar as qp"
self.kernel.shell.run_cell(cell, store_history=False)
# Set the in-kernel matplotlib color scheme to black.
self.setMplColorScheme('black') # Outside as well (do we need this?)
self.kernel.shell.run_cell(constants.matplotlib_rc_cell_black,
store_history=False)
def createIPythonWidget(self):
"""
Create the IPython widget
"""
self.consoleWidget = RichIPythonWidget()
#self.consoleWidget.setMinimumSize(600, 550)
self.consoleWidget.banner = QtipBanner
self.consoleWidget.kernel_manager = self.kernelManager
self.consoleWidget.kernel_client = self.kernelClient
self.consoleWidget.exit_requested.connect(self.toggleIPython)
self.consoleWidget.set_default_style(colors='linux')
self.consoleWidget.hide()
# Register a call-back function for the IPython shell. This one is
# executed insite the child-kernel.
#self.kernel.shell.register_post_execute(self.postExecute)
#
# In IPython >= 2, we can use the event register
# Events: post_run_cell, pre_run_cell, etc...`
self.kernel.shell.events.register('pre_execute', self.preExecute)
self.kernel.shell.events.register('post_execute', self.postExecute)
self.kernel.shell.events.register('post_run_cell', self.postRunCell)
def createOpenSomethingWidget(self):
"""
Create the OpenSomething widget. Do not add it to the layout yet
TODO: probably should use a signal to implement this call instead of
openParTim
"""
self.openSomethingWidget = OpenSomethingWidget(parent=self.mainFrame, \
openFile=self.requestOpenPlk)
self.openSomethingWidget.hide()
def createPlkWidget(self):
"""
Create the Plk widget
"""
self.plkWidget = PlkWidget(parent=self.mainFrame)
self.plkWidget.hide()
def createBinaryWidget(self):
"""
Create the binary model widget
"""
self.binaryWidget = BinaryWidget(parent=self.mainFrame)
self.binaryWidget.hide()
def toggleIPython(self):
"""
Toggle the IPython widget on or off
"""
self.setQtipLayout(showIPython=not self.showIPython)
def toggleBinary(self):
"""
Toggle the binary model widget on or off
"""
self.setQtipLayout(whichWidget='binary')
def togglePlk(self):
"""
Toggle the plk widget on or off
"""
self.setQtipLayout(whichWidget='plk')
def initQtipLayout(self):
"""
Initialise the Qtip layout
"""
self.hbox.addWidget(self.openSomethingWidget)
self.hbox.addWidget(self.plkWidget)
self.hbox.addWidget(self.binaryWidget)
self.hbox.addStretch(1)
self.hbox.addWidget(self.consoleWidget)
self.mainFrame.setLayout(self.hbox)
def hideAllWidgets(self):
"""
Hide all widgets of the mainFrame
"""
# Remove all widgets from the main window
# ???
"""
while self.hbox.count():
item = self.hbox.takeAt(0)
if isinstance(item, QtGui.QWidgetItem):
#item.widget().deleteLater()
item.widget().hide()
elif isinstance(item, QtGui.QSpacerItem):
#self.hbox.removeItem(item)
pass
else:
#fcbox.clearLayout(item.layout())
#self.hbox.removeItem(item)
pass
"""
self.openSomethingWidget.hide()
self.plkWidget.hide()
self.binaryWidget.hide()
self.consoleWidget.hide()
def showVisibleWidgets(self):
"""
Show the correct widgets in the mainFrame
"""
# Add the widgets we need
if self.whichWidget.lower() == 'opensomething':
self.openSomethingWidget.show()
elif self.whichWidget.lower() == 'plk':
self.plkWidget.show()
elif self.whichWidget.lower() == 'piccard':
pass
elif self.whichWidget.lower() == 'binary':
self.binaryWidget.show()
if self.showIPython:
self.consoleWidget.show()
else:
pass
if self.whichWidget.lower() == 'plk' and not self.showIPython:
self.plkWidget.setFocusToCanvas()
elif self.whichWidget.lower() == 'binary' and not self.showIPython:
self.binaryWidget.setFocusToCanvas()
#elif self.showIPython:
# self.consoleWidget.setFocus()
def setQtipLayout(self,
whichWidget=None,
showIPython=None,
firsttime=False):
"""
Given which widgets to show, display the right widgets and hide the rest
@param whichWidget: Which widget to show
@param showIPython: Whether to show the IPython console
"""
if not whichWidget is None:
self.whichWidget = whichWidget
if not showIPython is None:
self.showIPython = showIPython
# After hiding the widgets, wait 25 (or 0?) miliseconds before showing them again
self.hideAllWidgets()
QtCore.QTimer.singleShot(0, self.showVisibleWidgets)
self.prevWhichWidget = self.whichWidget
if self.showIPython != self.prevShowIPython:
# IPython has been toggled
self.prevShowIPython = self.showIPython
if self.showIPython:
self.resize(1350, 550)
self.mainFrame.resize(1350, 550)
else:
self.resize(650, 550)
self.mainFrame.resize(650, 550)
if firsttime:
# Set position slightly more to the left of the screen, so we can
# still open IPython
self.move(200, 100)
self.mainFrame.setLayout(self.hbox)
self.mainFrame.show()
def requestOpenPlk(self, parfilename=None, timfilename=None, \
testpulsar=False, engine='libstempo'):
"""
Request to open a file in the plk widget
@param parfilename: The parfile to open. If none, ask the user
@param timfilename: The timfile to open. If none, ask the user
"""
self.setQtipLayout(whichWidget='plk', showIPython=self.showIPython)
if parfilename is None and not testpulsar:
parfilename = QtGui.QFileDialog.getOpenFileName(
self, 'Open par-file', '~/')
if timfilename is None and not testpulsar:
timfilename = QtGui.QFileDialog.getOpenFileName(
self, 'Open tim-file', '~/')
# Load the pulsar
self.openPulsar(parfilename, timfilename, engine=engine, \
testpulsar=testpulsar)
def setMplColorScheme(self, scheme):
"""
Set the matplotlib color scheme
@param scheme: 'black'/'white', the color scheme
"""
# Obtain the Widget background color
color = self.palette().color(QtGui.QPalette.Window)
r, g, b = color.red(), color.green(), color.blue()
rgbcolor = (r / 255.0, g / 255.0, b / 255.0)
if scheme == 'white':
rcP = constants.mpl_rcParams_white
rcP['axes.facecolor'] = rgbcolor
rcP['figure.facecolor'] = rgbcolor
rcP['figure.edgecolor'] = rgbcolor
rcP['savefig.facecolor'] = rgbcolor
rcP['savefig.edgecolor'] = rgbcolor
elif scheme == 'black':
rcP = constants.mpl_rcParams_black
for key, value in rcP.iteritems():
matplotlib.rcParams[key] = value
def openParTim(self, filename=None, engine='libstempo'):
"""
Open a par-file and a tim-file
"""
print("openParTim called with {0}".format(filename))
# Ask the user for a par and tim file, and open these with libstempo
if isinstance(filename, str):
parfilename = filename
else:
parfilename = QtGui.QFileDialog.getOpenFileName(
self, 'Open par-file', '~/')
timfilename = QtGui.QFileDialog.getOpenFileName(
self, 'Open tim-file', '~/')
# Load the pulsar
self.openPulsar(parfilename, timfilename, engine=engine)
def openPulsar(self,
parfilename,
timfilename,
engine='libstempo',
testpulsar=False):
"""
Open a pulsar, given a parfile and a timfile
@param parfilename: The name of the parfile to open
@param timfilename: The name fo the timfile to open
@param engine: Which pulsar timing engine to use [libstempo]
@param testpulsar: If True, open the test pulsar (J1744, NANOGrav)
"""
if engine == 'pint':
trypint = True
else:
trypint = False
self.engine, pclass = qp.get_engine(trypint=trypint)
if engine == 'libstempo':
if not testpulsar:
# Obtain the directory name of the timfile, and change to it
timfiletup = os.path.split(timfilename)
dirname = timfiletup[0]
reltimfile = timfiletup[-1]
relparfile = os.path.relpath(parfilename, dirname)
savedir = os.getcwd()
# Change directory to the base directory of the tim-file to deal with
# INCLUDE statements in the tim-file
os.chdir(dirname)
# Load the pulsar
cell = "psr = qp." + pclass + "('" + relparfile + "', '" + reltimfile + "')"
self.kernel.shell.run_cell(cell)
psr = self.kernel.shell.ns_table['user_local']['psr']
# Change directory back to where we were
os.chdir(savedir)
else:
cell = "psr = qp." + pclass + "(testpulsar=True)"
self.kernel.shell.run_cell(cell)
psr = self.kernel.shell.ns_table['user_local']['psr']
elif engine == 'pint':
cell = "psr = qp." + pclass + "(testpulsar=True)"
self.kernel.shell.run_cell(cell)
psr = self.kernel.shell.ns_table['user_local']['psr']
else:
raise NotImplemented("Only works with PINT/libstempo")
# Update the plk widget
self.plkWidget.setPulsar(psr)
self.binaryWidget.setPulsar(psr)
# Communicating with the kernel goes as follows
# self.kernel.shell.push({'foo': 43, 'print_process_id': print_process_id}, interactive=True)
# print("Embedded, we have:", self.kernel.shell.ns_table['user_local']['foo'])
def keyPressEvent(self, event, **kwargs):
"""
Handle a key-press event
@param event: event that is handled here
"""
key = event.key()
if key == QtCore.Qt.Key_Escape:
self.close()
elif key == QtCore.Qt.Key_Left:
#print("Left pressed")
pass
else:
#print("Other key")
pass
#print("QtipWindow: key press")
super(QtipWindow, self).keyPressEvent(event, **kwargs)
def mousePressEvent(self, event, **kwargs):
"""
Handle a mouse-click event
@param event: event that is handled here
"""
#print("QtipWindow: mouse click")
super(QtipWindow, self).mousePressEvent(event, **kwargs)
def preExecute(self):
"""
Callback function that is run prior to execution of a cell
"""
pass
def postExecute(self):
"""
Callback function that is run after execution of a code
"""
pass
def postRunCell(self):
"""
Callback function that is run after execution of a cell (after
post-execute)
"""
# TODO: Do more than just update the plot, but also update _all_ the
# widgets. Make a callback in plkWidget for that. QtipWindow might also
# want to loop over some stuff.
if self.whichWidget == 'plk':
self.plkWidget.updatePlot()
elif self.whichWidget == 'binary':
self.binaryWidget.updatePlot()
