fixes for pyside compatibility

Qt.py

 ## Do all Qt imports from here to allow easier PyQt / PySide compatibility
 
-#from PySide import QtGui, QtCore, QtOpenGL, QtSvg
-from PyQt4 import QtGui, QtCore, QtOpenGL, QtSvg
-if not hasattr(QtCore, 'Signal'):
-    QtCore.Signal = QtCore.pyqtSignal
+from PySide import QtGui, QtCore, QtOpenGL, QtSvg
+#from PyQt4 import QtGui, QtCore, QtOpenGL, QtSvg
+#if not hasattr(QtCore, 'Signal'):
+#    QtCore.Signal = QtCore.pyqtSignal

examples/Arrow.py

@@ -4,7 +4,7 @@ import sys, os
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 import numpy as np
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 
 

examples/CLIexample.py

@@ -3,7 +3,7 @@ import sys, os
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import numpy as np
 import pyqtgraph as pg
 

examples/GradientEditor.py

@@ -4,7 +4,7 @@ import sys, os
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 import numpy as np
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 
 

examples/GraphicsLayout.py

@@ -2,7 +2,7 @@
 import sys, os
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 import user
 

examples/HistogramLUT.py

@@ -5,7 +5,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 import numpy as np
 import scipy.ndimage as ndi
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 
 

examples/MultiPlotWidget.py

@@ -7,7 +7,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 from scipy import random
 from numpy import linspace
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 from pyqtgraph import MultiPlotWidget
 try:

examples/PlotSpeedTest.py

@@ -5,7 +5,7 @@ import sys, os, time
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import numpy as np
 import pyqtgraph as pg
 

examples/PlotWidget.py

@@ -5,7 +5,7 @@ import sys, os
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import numpy as np
 import pyqtgraph as pg
 

examples/Plotting.py

@@ -5,7 +5,7 @@ import sys, os
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import numpy as np
 import pyqtgraph as pg
 

examples/ScatterPlot.py

@@ -3,7 +3,7 @@ import sys, os
 ## Add path to library (just for examples; you do not need this)
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 import numpy as np
 

examples/VideoSpeedTest.py

@@ -5,7 +5,7 @@ import sys, os, time
 sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import numpy as np
 import pyqtgraph as pg
 from pyqtgraph import RawImageWidget

examples/ViewBox.py

@@ -8,7 +8,7 @@ sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
 
 #from scipy import random
 import numpy as np
-from PyQt4 import QtGui, QtCore
+from pyqtgraph.Qt import QtGui, QtCore
 import pyqtgraph as pg
 
 app = QtGui.QApplication([])

examples/__main__.py

-from PyQt4 import QtCore, QtGui
+import sys, os
+## make sure this pyqtgraph is importable before any others
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', '..'))
+from pyqtgraph.Qt import QtCore, QtGui
+
 from exampleLoaderTemplate import Ui_Form
 import os, sys
 from collections import OrderedDict
@@ -98,4 +102,4 @@ def run():
         app.exec_()
 
 if __name__ == '__main__':
-    run()
\ No newline at end of file
+    run()

graphicsItems/GraphicsItemMethods.py

@@ -51,7 +51,6 @@ class GraphicsItemMethods(object):
                 if hasattr(p, 'implements') and p.implements('ViewBox'):
                     self._viewBox = weakref.ref(p)
                     break
-                    
         return self._viewBox()  ## If we made it this far, _viewBox is definitely not None
 
     def forgetViewBox(self):
@@ -78,7 +77,10 @@ class GraphicsItemMethods(object):
         if view is None:
             return None
         if hasattr(view, 'implements') and view.implements('ViewBox'):
-            return self.itemTransform(view.innerSceneItem())[0]
+            tr = self.itemTransform(view.innerSceneItem())
+            if isinstance(tr, tuple):
+                tr = tr[0]   ## difference between pyside and pyqt
+            return tr
         else:
             return self.sceneTransform()
             #return self.deviceTransform(view.viewportTransform())
@@ -102,7 +104,11 @@ class GraphicsItemMethods(object):
         view = self.getViewBox()
         if view is None:
             return None
-        bounds = self.mapRectFromView(view.viewRect()).normalized()
+        bounds = self.mapRectFromView(view.viewRect())
+        if bounds is None:
+            return None
+
+        bounds = bounds.normalized()
         
         ## nah.
         #for p in self.getBoundingParents():
@@ -246,7 +252,10 @@ class GraphicsItemMethods(object):
         if relativeItem is None:
             relativeItem = self.parentItem()
             
-        tr = self.itemTransform(relativeItem)[0]
+
+        tr = self.itemTransform(relativeItem)
+        if isinstance(tr, tuple):  ## difference between pyside and pyqt
+            tr = tr[0]  
         vec = tr.map(Point(1,0)) - tr.map(Point(0,0))
         return Point(vec).angle(Point(1,0))