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#!/usr/bin/env python
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"""Example integrating an IPython kernel into a GUI App.
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This trivial GUI application internally starts an IPython kernel, to which Qt
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consoles can be connected either by the user at the command line or started
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from the GUI itself, via a button. The GUI can also manipulate one variable in
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the kernel's namespace, and print the namespace to the console.
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Play with it by running the script and then opening one or more consoles, and
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pushing the 'Counter++' and 'Namespace' buttons.
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Upon exit, it should automatically close all consoles opened from the GUI.
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Consoles attached separately from a terminal will not be terminated, though
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they will notice that their kernel died.
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"""
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from PyQt4 import Qt
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from internal_ipkernel import InternalIPKernel
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#-----------------------------------------------------------------------------
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# Functions and classes
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#-----------------------------------------------------------------------------
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class SimpleWindow(Qt.QWidget, InternalIPKernel):
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def __init__(self, app):
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Qt.QWidget.__init__(self)
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self.app = app
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self.add_widgets()
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self.init_ipkernel('qt')
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def add_widgets(self):
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self.setGeometry(300, 300, 400, 70)
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self.setWindowTitle('IPython in your app')
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# Add simple buttons:
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console = Qt.QPushButton('Qt Console', self)
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console.setGeometry(10, 10, 100, 35)
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self.connect(console, Qt.SIGNAL('clicked()'), self.new_qt_console)
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namespace = Qt.QPushButton('Namespace', self)
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namespace.setGeometry(120, 10, 100, 35)
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self.connect(namespace, Qt.SIGNAL('clicked()'), self.print_namespace)
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count = Qt.QPushButton('Count++', self)
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count.setGeometry(230, 10, 80, 35)
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self.connect(count, Qt.SIGNAL('clicked()'), self.count)
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# Quit and cleanup
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quit = Qt.QPushButton('Quit', self)
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quit.setGeometry(320, 10, 60, 35)
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self.connect(quit, Qt.SIGNAL('clicked()'), Qt.qApp, Qt.SLOT('quit()'))
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self.app.connect(self.app, Qt.SIGNAL("lastWindowClosed()"),
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self.app, Qt.SLOT("quit()"))
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self.app.aboutToQuit.connect(self.cleanup_consoles)
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#-----------------------------------------------------------------------------
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# Main script
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#-----------------------------------------------------------------------------
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if __name__ == "__main__":
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app = Qt.QApplication([])
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# Create our window
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win = SimpleWindow(app)
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win.show()
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# Very important, IPython-specific step: this gets GUI event loop
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# integration going, and it replaces calling app.exec_()
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win.ipkernel.start()
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