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#/############################################################################
#
# This module is based on an answer published in:
#
# http://stackoverflow.com/questions/11513132/embedding-ipython-qt-console-in-a-pyqt-application
#
# by Tim Rae
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#############################################################################*/
__author__ = "Tim Rae, V.A. Sole"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
# Set the QT API
import os
import sys
from PyMca5.PyMcaGui.PyMcaQt import QApplication, QWidget, \
QPushButton, QVBoxLayout, QMessageBox, \
BINDING
# this seems to be obsolete stuff
if BINDING == "PySide":
os.environ['QT_API'] = 'pyside'
elif BINDING == "PySide2":
os.environ['QT_API'] = 'pyside2'
elif BINDING == "PyQt4":
os.environ['QT_API'] = 'pyqt'
else:
os.environ['QT_API'] = 'pyqt5'
QTCONSOLE = True
if sys.version_info < (3,):
import IPython
if IPython.__version__.startswith("2"):
QTCONSOLE = False
else:
try:
import qtconsole
except ImportError:
QTCONSOLE = False
import IPython
if QTCONSOLE:
try:
from qtconsole.rich_ipython_widget import RichJupyterWidget as RichIPythonWidget
except:
from qtconsole.rich_ipython_widget import RichIPythonWidget
from qtconsole.inprocess import QtInProcessKernelManager
else:
# Import the console machinery from ipython
# Check if we using a frozen version because
# the test of IPython does not find the Qt bindings
executables = ["PyMcaMain.exe", "QStackWidget.exe", "PyMcaPostBatch.exe"]
if os.path.basename(sys.executable) in executables:
import IPython.external.qt_loaders
def has_binding(*var, **kw):
return True
IPython.external.qt_loaders.has_binding = has_binding
from IPython.qt.console.rich_ipython_widget import RichIPythonWidget
from IPython.qt.inprocess import QtInProcessKernelManager
class QIPythonWidget(RichIPythonWidget):
""" Convenience class for a live IPython console widget. We can replace the standard banner using the customBanner argument"""
def __init__(self,customBanner=None,*args,**kwargs):
super(QIPythonWidget, self).__init__(*args,**kwargs)
if customBanner != None:
self.banner = customBanner
self.setWindowTitle(self.banner)
self.kernel_manager = kernel_manager = QtInProcessKernelManager()
kernel_manager.start_kernel()
try:
# https://github.com/ipython/ipykernel/issues/370
from ipykernel import version_info
if version_info < (5, 1, 1):
def _abort_queues(kernel):
pass
kernel_manager.kernel._abort_queues = _abort_queues
except:
pass
if BINDING in ["PySide", "PyQt4"]:
kernel_manager.kernel.gui = 'qt4'
self.kernel_client = kernel_client = self._kernel_manager.client()
kernel_client.start_channels()
def stop():
#clear workspace
msg = QMessageBox(self)
msg.setWindowTitle("Console cleanup")
msg.setText("Do you want to clean the console workspace?")
msg.setStandardButtons(QMessageBox.No | QMessageBox.Yes)
msg.setDefaultButton(QMessageBox.Yes)
ret = msg.exec()
try:
if ret == QMessageBox.Yes:
self.kernel_manager.kernel.shell.magic('reset -sf')
kernel_client.stop_channels()
kernel_manager.shutdown_kernel()
except:
print("Error cleaning console variables")
kernel_client.stop_channels()
kernel_manager.shutdown_kernel()
# close widget instead of quitting application
self.close()
self.exit_requested.connect(stop)
def pushVariables(self,variableDict):
""" Given a dictionary containing name / value pairs, push those variables to the IPython console widget """
self.kernel_manager.kernel.shell.push(variableDict)
def clearTerminal(self):
""" Clears the terminal """
self._control.clear()
def printText(self,text):
""" Prints some plain text to the console """
self._append_plain_text(text)
def executeCommand(self,command):
""" Execute a command in the frame of the console widget """
self._execute(command,False)
def show(self):
if self.kernel_manager.kernel is None:
# we need to restart the kernel
self.kernel_manager.start_kernel()
self.kernel_client.start_channels()
return RichIPythonWidget.show(self)
class ExampleWidget(QWidget):
""" Main GUI Widget including a button and IPython Console widget inside vertical layout """
def __init__(self, parent=None):
super(ExampleWidget, self).__init__(parent)
layout = QVBoxLayout(self)
self.button = QPushButton('Another widget')
ipyConsole = QIPythonWidget(customBanner="Welcome to the embedded ipython console\n")
layout.addWidget(self.button)
layout.addWidget(ipyConsole)
# This allows the variable foo and method print_process_id to be accessed from the ipython console
ipyConsole.pushVariables({"foo":43,"print_process_id":print_process_id})
ipyConsole.printText("The variable 'foo' and the method 'print_process_id()' are available. Use the 'whos' command for information.")
def print_process_id():
print('Process ID is:', os.getpid())
def main():
app = QApplication([])
widget = ExampleWidget()
widget.show()
app.exec()
if __name__ == '__main__':
main()
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