pyqtgraph/Qt.py
Luke Campagnola 80148920c9 Bugfixes:
- Image exporter detects GraphicsView background color
- Corrected exporter filename handling for SVG export
- ViewBox no longer attempts to deregister itself while python is exiting
- Speedup for conversion using np.array(MetaArray_instance)
- GLGraphicsItem updates immediately when its GL options have changed
- Corrected some GL shader program bugs for nVidia drivers
- Fixed coordinate mapping bug in functions.transformCoordinates
- Fixed PySide import error
2012-12-04 21:02:05 -05:00

49 lines
1.5 KiB
Python

## Do all Qt imports from here to allow easier PyQt / PySide compatibility
import sys, re
## 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
## Make sure we have Qt >= 4.7
versionReq = [4, 7]
QtVersion = PySide.QtCore.__version__ if USE_PYSIDE else QtCore.QT_VERSION_STR
m = re.match(r'(\d+)\.(\d+).*', QtVersion)
if m is not None and map(int, m.groups()) < versionReq:
print map(int, m.groups())
raise Exception('pyqtgraph requires Qt version >= %d.%d (your version is %s)' % (versionReq[0], versionReq[1], QtVersion))