|
|
""" A minimal application using the Qt console-style IPython frontend.
|
|
|
|
|
|
This is not a complete console app, as subprocess will not be able to receive
|
|
|
input, there is no real readline support, among other limitations.
|
|
|
|
|
|
Authors:
|
|
|
|
|
|
* Evan Patterson
|
|
|
* Min RK
|
|
|
* Erik Tollerud
|
|
|
* Fernando Perez
|
|
|
* Bussonnier Matthias
|
|
|
* Thomas Kluyver
|
|
|
* Paul Ivanov
|
|
|
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# stdlib imports
|
|
|
import json
|
|
|
import os
|
|
|
import signal
|
|
|
import sys
|
|
|
import uuid
|
|
|
|
|
|
# If run on Windows, install an exception hook which pops up a
|
|
|
# message box. Pythonw.exe hides the console, so without this
|
|
|
# the application silently fails to load.
|
|
|
#
|
|
|
# We always install this handler, because the expectation is for
|
|
|
# qtconsole to bring up a GUI even if called from the console.
|
|
|
# The old handler is called, so the exception is printed as well.
|
|
|
# If desired, check for pythonw with an additional condition
|
|
|
# (sys.executable.lower().find('pythonw.exe') >= 0).
|
|
|
if os.name == 'nt':
|
|
|
old_excepthook = sys.excepthook
|
|
|
|
|
|
def gui_excepthook(exctype, value, tb):
|
|
|
try:
|
|
|
import ctypes, traceback
|
|
|
MB_ICONERROR = 0x00000010L
|
|
|
title = u'Error starting IPython QtConsole'
|
|
|
msg = u''.join(traceback.format_exception(exctype, value, tb))
|
|
|
ctypes.windll.user32.MessageBoxW(0, msg, title, MB_ICONERROR)
|
|
|
finally:
|
|
|
# Also call the old exception hook to let it do
|
|
|
# its thing too.
|
|
|
old_excepthook(exctype, value, tb)
|
|
|
|
|
|
sys.excepthook = gui_excepthook
|
|
|
|
|
|
# System library imports
|
|
|
from IPython.external.qt import QtCore, QtGui
|
|
|
|
|
|
# Local imports
|
|
|
from IPython.config.application import boolean_flag, catch_config_error
|
|
|
from IPython.core.application import BaseIPythonApplication
|
|
|
from IPython.core.profiledir import ProfileDir
|
|
|
from IPython.lib.kernel import tunnel_to_kernel, find_connection_file
|
|
|
from IPython.frontend.qt.console.frontend_widget import FrontendWidget
|
|
|
from IPython.frontend.qt.console.ipython_widget import IPythonWidget
|
|
|
from IPython.frontend.qt.console.rich_ipython_widget import RichIPythonWidget
|
|
|
from IPython.frontend.qt.console import styles
|
|
|
from IPython.frontend.qt.console.mainwindow import MainWindow
|
|
|
from IPython.frontend.qt.kernelmanager import QtKernelManager
|
|
|
from IPython.utils.path import filefind
|
|
|
from IPython.utils.py3compat import str_to_bytes
|
|
|
from IPython.utils.traitlets import (
|
|
|
Dict, List, Unicode, Integer, CaselessStrEnum, CBool, Any
|
|
|
)
|
|
|
from IPython.zmq.ipkernel import IPKernelApp
|
|
|
from IPython.zmq.session import Session, default_secure
|
|
|
from IPython.zmq.zmqshell import ZMQInteractiveShell
|
|
|
|
|
|
from IPython.frontend.consoleapp import (
|
|
|
IPythonConsoleApp, app_aliases, app_flags, flags, aliases
|
|
|
)
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Network Constants
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from IPython.utils.localinterfaces import LOCALHOST, LOCAL_IPS
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Globals
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
_examples = """
|
|
|
ipython qtconsole # start the qtconsole
|
|
|
ipython qtconsole --pylab=inline # start with pylab in inline plotting mode
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Aliases and Flags
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
# start with copy of flags
|
|
|
flags = dict(flags)
|
|
|
qt_flags = {
|
|
|
'pure' : ({'IPythonQtConsoleApp' : {'pure' : True}},
|
|
|
"Use a pure Python kernel instead of an IPython kernel."),
|
|
|
'plain' : ({'ConsoleWidget' : {'kind' : 'plain'}},
|
|
|
"Disable rich text support."),
|
|
|
}
|
|
|
qt_flags.update(boolean_flag(
|
|
|
'gui-completion', 'ConsoleWidget.gui_completion',
|
|
|
"use a GUI widget for tab completion",
|
|
|
"use plaintext output for completion"
|
|
|
))
|
|
|
# and app_flags from the Console Mixin
|
|
|
qt_flags.update(app_flags)
|
|
|
# add frontend flags to the full set
|
|
|
flags.update(qt_flags)
|
|
|
|
|
|
# start with copy of front&backend aliases list
|
|
|
aliases = dict(aliases)
|
|
|
qt_aliases = dict(
|
|
|
|
|
|
style = 'IPythonWidget.syntax_style',
|
|
|
stylesheet = 'IPythonQtConsoleApp.stylesheet',
|
|
|
colors = 'ZMQInteractiveShell.colors',
|
|
|
|
|
|
editor = 'IPythonWidget.editor',
|
|
|
paging = 'ConsoleWidget.paging',
|
|
|
)
|
|
|
# and app_aliases from the Console Mixin
|
|
|
qt_aliases.update(app_aliases)
|
|
|
# add frontend aliases to the full set
|
|
|
aliases.update(qt_aliases)
|
|
|
|
|
|
# get flags&aliases into sets, and remove a couple that
|
|
|
# shouldn't be scrubbed from backend flags:
|
|
|
qt_aliases = set(qt_aliases.keys())
|
|
|
qt_aliases.remove('colors')
|
|
|
qt_flags = set(qt_flags.keys())
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# IPythonQtConsole
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
class IPythonQtConsoleApp(BaseIPythonApplication, IPythonConsoleApp):
|
|
|
name = 'ipython-qtconsole'
|
|
|
|
|
|
description = """
|
|
|
The IPython QtConsole.
|
|
|
|
|
|
This launches a Console-style application using Qt. It is not a full
|
|
|
console, in that launched terminal subprocesses will not be able to accept
|
|
|
input.
|
|
|
|
|
|
The QtConsole supports various extra features beyond the Terminal IPython
|
|
|
shell, such as inline plotting with matplotlib, via:
|
|
|
|
|
|
ipython qtconsole --pylab=inline
|
|
|
|
|
|
as well as saving your session as HTML, and printing the output.
|
|
|
|
|
|
"""
|
|
|
examples = _examples
|
|
|
|
|
|
classes = [IPKernelApp, IPythonWidget, ZMQInteractiveShell, ProfileDir, Session]
|
|
|
flags = Dict(flags)
|
|
|
aliases = Dict(aliases)
|
|
|
frontend_flags = Any(qt_flags)
|
|
|
frontend_aliases = Any(qt_aliases)
|
|
|
kernel_manager_class = QtKernelManager
|
|
|
|
|
|
stylesheet = Unicode('', config=True,
|
|
|
help="path to a custom CSS stylesheet")
|
|
|
|
|
|
plain = CBool(False, config=True,
|
|
|
help="Use a plaintext widget instead of rich text (plain can't print/save).")
|
|
|
|
|
|
def _pure_changed(self, name, old, new):
|
|
|
kind = 'plain' if self.plain else 'rich'
|
|
|
self.config.ConsoleWidget.kind = kind
|
|
|
if self.pure:
|
|
|
self.widget_factory = FrontendWidget
|
|
|
elif self.plain:
|
|
|
self.widget_factory = IPythonWidget
|
|
|
else:
|
|
|
self.widget_factory = RichIPythonWidget
|
|
|
|
|
|
_plain_changed = _pure_changed
|
|
|
|
|
|
# the factory for creating a widget
|
|
|
widget_factory = Any(RichIPythonWidget)
|
|
|
|
|
|
def parse_command_line(self, argv=None):
|
|
|
super(IPythonQtConsoleApp, self).parse_command_line(argv)
|
|
|
self.build_kernel_argv(argv)
|
|
|
|
|
|
|
|
|
def new_frontend_master(self):
|
|
|
""" Create and return new frontend attached to new kernel, launched on localhost.
|
|
|
"""
|
|
|
ip = self.ip if self.ip in LOCAL_IPS else LOCALHOST
|
|
|
kernel_manager = self.kernel_manager_class(
|
|
|
ip=ip,
|
|
|
connection_file=self._new_connection_file(),
|
|
|
config=self.config,
|
|
|
)
|
|
|
# start the kernel
|
|
|
kwargs = dict(ipython=not self.pure)
|
|
|
kwargs['extra_arguments'] = self.kernel_argv
|
|
|
kernel_manager.start_kernel(**kwargs)
|
|
|
kernel_manager.start_channels()
|
|
|
widget = self.widget_factory(config=self.config,
|
|
|
local_kernel=True)
|
|
|
self.init_colors(widget)
|
|
|
widget.kernel_manager = kernel_manager
|
|
|
widget._existing = False
|
|
|
widget._may_close = True
|
|
|
widget._confirm_exit = self.confirm_exit
|
|
|
return widget
|
|
|
|
|
|
def new_frontend_slave(self, current_widget):
|
|
|
"""Create and return a new frontend attached to an existing kernel.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
current_widget : IPythonWidget
|
|
|
The IPythonWidget whose kernel this frontend is to share
|
|
|
"""
|
|
|
kernel_manager = self.kernel_manager_class(
|
|
|
connection_file=current_widget.kernel_manager.connection_file,
|
|
|
config = self.config,
|
|
|
)
|
|
|
kernel_manager.load_connection_file()
|
|
|
kernel_manager.start_channels()
|
|
|
widget = self.widget_factory(config=self.config,
|
|
|
local_kernel=False)
|
|
|
self.init_colors(widget)
|
|
|
widget._existing = True
|
|
|
widget._may_close = False
|
|
|
widget._confirm_exit = False
|
|
|
widget.kernel_manager = kernel_manager
|
|
|
return widget
|
|
|
|
|
|
def init_qt_elements(self):
|
|
|
# Create the widget.
|
|
|
self.app = QtGui.QApplication([])
|
|
|
|
|
|
base_path = os.path.abspath(os.path.dirname(__file__))
|
|
|
icon_path = os.path.join(base_path, 'resources', 'icon', 'IPythonConsole.svg')
|
|
|
self.app.icon = QtGui.QIcon(icon_path)
|
|
|
QtGui.QApplication.setWindowIcon(self.app.icon)
|
|
|
|
|
|
local_kernel = (not self.existing) or self.ip in LOCAL_IPS
|
|
|
self.widget = self.widget_factory(config=self.config,
|
|
|
local_kernel=local_kernel)
|
|
|
self.init_colors(self.widget)
|
|
|
self.widget._existing = self.existing
|
|
|
self.widget._may_close = not self.existing
|
|
|
self.widget._confirm_exit = self.confirm_exit
|
|
|
|
|
|
self.widget.kernel_manager = self.kernel_manager
|
|
|
self.window = MainWindow(self.app,
|
|
|
confirm_exit=self.confirm_exit,
|
|
|
new_frontend_factory=self.new_frontend_master,
|
|
|
slave_frontend_factory=self.new_frontend_slave,
|
|
|
)
|
|
|
self.window.log = self.log
|
|
|
self.window.add_tab_with_frontend(self.widget)
|
|
|
self.window.init_menu_bar()
|
|
|
|
|
|
self.window.setWindowTitle('Python' if self.pure else 'IPython')
|
|
|
|
|
|
def init_colors(self, widget):
|
|
|
"""Configure the coloring of the widget"""
|
|
|
# Note: This will be dramatically simplified when colors
|
|
|
# are removed from the backend.
|
|
|
|
|
|
if self.pure:
|
|
|
# only IPythonWidget supports styling
|
|
|
return
|
|
|
|
|
|
# parse the colors arg down to current known labels
|
|
|
try:
|
|
|
colors = self.config.ZMQInteractiveShell.colors
|
|
|
except AttributeError:
|
|
|
colors = None
|
|
|
try:
|
|
|
style = self.config.IPythonWidget.syntax_style
|
|
|
except AttributeError:
|
|
|
style = None
|
|
|
try:
|
|
|
sheet = self.config.IPythonWidget.style_sheet
|
|
|
except AttributeError:
|
|
|
sheet = None
|
|
|
|
|
|
# find the value for colors:
|
|
|
if colors:
|
|
|
colors=colors.lower()
|
|
|
if colors in ('lightbg', 'light'):
|
|
|
colors='lightbg'
|
|
|
elif colors in ('dark', 'linux'):
|
|
|
colors='linux'
|
|
|
else:
|
|
|
colors='nocolor'
|
|
|
elif style:
|
|
|
if style=='bw':
|
|
|
colors='nocolor'
|
|
|
elif styles.dark_style(style):
|
|
|
colors='linux'
|
|
|
else:
|
|
|
colors='lightbg'
|
|
|
else:
|
|
|
colors=None
|
|
|
|
|
|
# Configure the style
|
|
|
if style:
|
|
|
widget.style_sheet = styles.sheet_from_template(style, colors)
|
|
|
widget.syntax_style = style
|
|
|
widget._syntax_style_changed()
|
|
|
widget._style_sheet_changed()
|
|
|
elif colors:
|
|
|
# use a default dark/light/bw style
|
|
|
widget.set_default_style(colors=colors)
|
|
|
|
|
|
if self.stylesheet:
|
|
|
# we got an explicit stylesheet
|
|
|
if os.path.isfile(self.stylesheet):
|
|
|
with open(self.stylesheet) as f:
|
|
|
sheet = f.read()
|
|
|
else:
|
|
|
raise IOError("Stylesheet %r not found." % self.stylesheet)
|
|
|
if sheet:
|
|
|
widget.style_sheet = sheet
|
|
|
widget._style_sheet_changed()
|
|
|
|
|
|
|
|
|
def init_signal(self):
|
|
|
"""allow clean shutdown on sigint"""
|
|
|
signal.signal(signal.SIGINT, lambda sig, frame: self.exit(-2))
|
|
|
# need a timer, so that QApplication doesn't block until a real
|
|
|
# Qt event fires (can require mouse movement)
|
|
|
# timer trick from http://stackoverflow.com/q/4938723/938949
|
|
|
timer = QtCore.QTimer()
|
|
|
# Let the interpreter run each 200 ms:
|
|
|
timer.timeout.connect(lambda: None)
|
|
|
timer.start(200)
|
|
|
# hold onto ref, so the timer doesn't get cleaned up
|
|
|
self._sigint_timer = timer
|
|
|
|
|
|
@catch_config_error
|
|
|
def initialize(self, argv=None):
|
|
|
super(IPythonQtConsoleApp, self).initialize(argv)
|
|
|
IPythonConsoleApp.initialize(self,argv)
|
|
|
self.init_qt_elements()
|
|
|
self.init_signal()
|
|
|
|
|
|
def start(self):
|
|
|
|
|
|
# draw the window
|
|
|
self.window.show()
|
|
|
self.window.raise_()
|
|
|
|
|
|
# Start the application main loop.
|
|
|
self.app.exec_()
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main entry point
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
def main():
|
|
|
app = IPythonQtConsoleApp()
|
|
|
app.initialize()
|
|
|
app.start()
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
main()
|
|
|
|
