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""" A demo of the Qt console-style IPython frontend.
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"""
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# Systemm library imports
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from PyQt4 import QtCore, QtGui
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# Local imports
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from IPython.external.argparse import ArgumentParser
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from IPython.frontend.qt.kernelmanager import QtKernelManager
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def main():
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""" Entry point for demo.
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"""
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# Parse command line arguments.
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parser = ArgumentParser()
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group = parser.add_mutually_exclusive_group()
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group.add_argument('--pure', action='store_true', help = \
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'use a pure Python kernel instead of an IPython kernel')
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group.add_argument('--pylab', action='store_true',
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help='use a kernel with PyLab enabled')
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parser.add_argument('--rich', action='store_true',
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help='use a rich text frontend')
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namespace = parser.parse_args()
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# Don't let Qt or ZMQ swallow KeyboardInterupts.
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import signal
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signal.signal(signal.SIGINT, signal.SIG_DFL)
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# Create a KernelManager and start a kernel.
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kernel_manager = QtKernelManager()
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if namespace.pure:
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kernel_manager.start_kernel(ipython=False)
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elif namespace.pylab:
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if namespace.rich:
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kernel_manager.start_kernel(pylab='payload-svg')
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else:
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kernel_manager.start_kernel(pylab='qt4')
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else:
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kernel_manager.start_kernel()
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kernel_manager.start_channels()
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# Launch the application.
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app = QtGui.QApplication([])
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if namespace.pure:
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from frontend_widget import FrontendWidget
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kind = 'rich' if namespace.rich else 'plain'
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widget = FrontendWidget(kind=kind)
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else:
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if namespace.rich:
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from rich_ipython_widget import RichIPythonWidget
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widget = RichIPythonWidget()
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else:
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from ipython_widget import IPythonWidget
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widget = IPythonWidget()
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widget.kernel_manager = kernel_manager
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widget.setWindowTitle('Python' if namespace.pure else 'IPython')
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widget.show()
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app.exec_()
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if __name__ == '__main__':
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main()
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