upstream/ipython Files · IPython/external/qt.py

Paved the way for PySide support....

Paved the way for PySide support. Created a Qt API switcher that imports PyQt4 or PySide as appropriate. If PyQt4 is loaded, the new-style QString API is used. This facillates both Python 3 and PySide compatibility.

Evan Patterson - - Load All Authors

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      """ A Qt API selector that can be used to switch between PyQt and PySide.

      """

      import os

      # Use PyQt by default until PySide is stable.

      qt_api = os.environ.get('QT_API', 'pyqt')

      if qt_api == 'pyqt':

          # For PySide compatibility, use the new string API that automatically

          # converts QStrings to unicode Python strings.

          import sip

          sip.setapi('QString', 2)

          from PyQt4 import QtCore, QtGui, QtSvg

          # Alias PyQt-specific functions for PySide compatibility.

          QtCore.Signal = QtCore.pyqtSignal

          QtCore.Slot = QtCore.pyqtSlot

      else:

          from PySide import QtCore, QtGui, QtSvg

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				""" A Qt API selector that can be used to switch between PyQt and PySide.
				"""

				import os

				# Use PyQt by default until PySide is stable.
				qt_api = os.environ.get('QT_API', 'pyqt')

				if qt_api == 'pyqt':
				# For PySide compatibility, use the new string API that automatically
				# converts QStrings to unicode Python strings.
				import sip
				sip.setapi('QString', 2)

				from PyQt4 import QtCore, QtGui, QtSvg

				# Alias PyQt-specific functions for PySide compatibility.
				QtCore.Signal = QtCore.pyqtSignal
				QtCore.Slot = QtCore.pyqtSlot

				else:
				from PySide import QtCore, QtGui, QtSvg