upstream/ipython Files · examples/IPython Kernel/gui/gui-qt.py

Backport PR : Add support for PyQt5....

Backport PR : Add support for PyQt5. This PR adds the new `QT_API_PYQT5` to `IPython/external/qt_loaders.py ` and allows to embed the IPython console in Qt5 Applications. In case of PyQt5, the loader returns a union of `PyQt5.QtGui` and `PyQt5.QtWidgets` acting as a Qt4-QtGui compatibility module. One small fix to `InProcessChannel.__init__` was necessary though. For some reason, when constructing `QtInProcessShellChannel`, the `QtCore.QObject.__init__` initializer from `SuperQObject` indirectly calls the `InProcessChannel.__init__` function, which doesn't have a default constructor and thus fails. I assume this has something to do with the metaclass/multiple inheritance approach IPython uses on QObject. Adding a default value for `client` in `InProcessChannel.__init__` solved the problem for me.

Brian E. Granger - - Load All Authors

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             gui-qt.py
        
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      #!/usr/bin/env python

      """Simple Qt4 example to manually test event loop integration.

      This is meant to run tests manually in ipython as:

      In [5]: %gui qt

      In [6]: %run gui-qt.py

      Ref: Modified from http://zetcode.com/tutorials/pyqt4/firstprograms/

      """

      from PyQt4 import QtGui, QtCore

      class SimpleWindow(QtGui.QWidget):

          def __init__(self, parent=None):

              QtGui.QWidget.__init__(self, parent)

              self.setGeometry(300, 300, 200, 80)

              self.setWindowTitle('Hello World')

              quit = QtGui.QPushButton('Close', self)

              quit.setGeometry(10, 10, 60, 35)

              self.connect(quit, QtCore.SIGNAL('clicked()'),

                           self, QtCore.SLOT('close()'))

      if __name__ == '__main__':

          app = QtCore.QCoreApplication.instance()

          if app is None:

              app = QtGui.QApplication([])

          sw = SimpleWindow()

          sw.show()

          try:

              from IPython.lib.guisupport import start_event_loop_qt4

              start_event_loop_qt4(app)

          except ImportError:

              app.exec_()

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				#!/usr/bin/env python
				"""Simple Qt4 example to manually test event loop integration.

				This is meant to run tests manually in ipython as:

				In [5]: %gui qt

				In [6]: %run gui-qt.py

				Ref: Modified from http://zetcode.com/tutorials/pyqt4/firstprograms/
				"""

				from PyQt4 import QtGui, QtCore

				class SimpleWindow(QtGui.QWidget):
				def __init__(self, parent=None):
				QtGui.QWidget.__init__(self, parent)

				self.setGeometry(300, 300, 200, 80)
				self.setWindowTitle('Hello World')

				quit = QtGui.QPushButton('Close', self)
				quit.setGeometry(10, 10, 60, 35)

				self.connect(quit, QtCore.SIGNAL('clicked()'),
				self, QtCore.SLOT('close()'))

				if __name__ == '__main__':
				app = QtCore.QCoreApplication.instance()
				if app is None:
				app = QtGui.QApplication([])

				sw = SimpleWindow()
				sw.show()

				try:
				from IPython.lib.guisupport import start_event_loop_qt4
				start_event_loop_qt4(app)
				except ImportError:
				app.exec_()