pyqtgraph/Qt.py

39 lines
1.1 KiB
Python

## Do all Qt imports from here to allow easier PyQt / PySide compatibility
import sys
## Automatically determine whether to use PyQt or PySide.
## This is done by first checking to see whether one of the libraries
## is already imported. If not, then attempt to import PyQt4, then PySide.
if 'PyQt4' in sys.modules:
USE_PYSIDE = False
elif 'PySide' in sys.modules:
USE_PYSIDE = True
else:
try:
import PyQt4
USE_PYSIDE = False
except ImportError:
try:
import Pyside
USE_PYSIDE = True
except ImportError:
raise Exception("PyQtGraph requires either PyQt4 or PySide; neither package could be imported.")
if USE_PYSIDE:
from PySide import QtGui, QtCore, QtOpenGL, QtSvg
import PySide
VERSION_INFO = 'PySide ' + PySide.__version__
else:
from PyQt4 import QtGui, QtCore
try:
from PyQt4 import QtSvg
except ImportError:
pass
try:
from PyQt4 import QtOpenGL
except ImportError:
pass
QtCore.Signal = QtCore.pyqtSignal
VERSION_INFO = 'PyQt4 ' + QtCore.PYQT_VERSION_STR + ' Qt ' + QtCore.QT_VERSION_STR