Make signature of the setPen method consistent

pyqtgraph/flowchart/Node.py

@@ -501,8 +501,8 @@ class NodeGraphicsItem(GraphicsObject):
         bounds = self.boundingRect()
         self.nameItem.setPos(bounds.width()/2. - self.nameItem.boundingRect().width()/2., 0)
 
-    def setPen(self, pen):
-        self.pen = pen
+    def setPen(self, *args, **kwargs):
+        self.pen = fn.mkPen(*args, **kwargs)
         self.update()
         
     def setBrush(self, brush):

pyqtgraph/graphicsItems/AxisItem.py

@@ -271,16 +271,16 @@ class AxisItem(GraphicsWidget):
             return fn.mkPen(getConfigOption('foreground'))
         return fn.mkPen(self._pen)
         
-    def setPen(self, pen):
+    def setPen(self, *args, **kwargs):
         """
         Set the pen used for drawing text, axes, ticks, and grid lines.
         if pen == None, the default will be used (see :func:`setConfigOption 
         <pyqtgraph.setConfigOption>`)
         """
         self.picture = None
-        if pen is None:
+        if not (args or kwargs):
             pen = getConfigOption('foreground')
-        self._pen = fn.mkPen(pen)
+        self._pen = fn.mkPen(*args, **kwargs)
         self.labelStyle['color'] = '#' + fn.colorStr(self._pen.color())[:6]
         self.setLabel()
         self.update()

pyqtgraph/graphicsItems/GraphItem.py

@@ -67,8 +67,8 @@ class GraphItem(GraphicsObject):
         self.scatter.setData(**kwds)
         self.informViewBoundsChanged()
 
-    def setPen(self, pen):
-        self.pen = pen
+    def setPen(self, *args, **kwargs):
+        self.pen = fn.mkPen(*args, **kwargs)
         self.picture = None
 
     def generatePicture(self):

pyqtgraph/graphicsItems/InfiniteLine.py

@@ -73,10 +73,10 @@ class InfiniteLine(GraphicsObject):
         self.maxRange = bounds
         self.setValue(self.value())
         
-    def setPen(self, pen):
+    def setPen(self, *args, **kwargs):
         """Set the pen for drawing the line. Allowable arguments are any that are valid 
         for :func:`mkPen <pyqtgraph.mkPen>`."""
-        self.pen = fn.mkPen(pen)
+        self.pen = fn.mkPen(*args, **kwargs)
         self.currentPen = self.pen
         self.update()
         

pyqtgraph/graphicsItems/ROI.py

@@ -137,8 +137,8 @@ class ROI(GraphicsObject):
     def parentBounds(self):
         return self.mapToParent(self.boundingRect()).boundingRect()
 
-    def setPen(self, pen):
-        self.pen = fn.mkPen(pen)
+    def setPen(self, *args, **kwargs):
+        self.pen = fn.mkPen(*args, **kwargs)
         self.currentPen = self.pen
         self.update()
         

pyqtgraph/widgets/PathButton.py

@@ -23,8 +23,8 @@ class PathButton(QtGui.QPushButton):
     def setBrush(self, brush):
         self.brush = fn.mkBrush(brush)
         
-    def setPen(self, pen):
-        self.pen = fn.mkPen(pen)
+    def setPen(self, *args, **kwargs):
+        self.pen = fn.mkPen(*args, **kwargs)
         
     def setPath(self, path):
         self.path = path
@@ -48,4 +48,3 @@ class PathButton(QtGui.QPushButton):
         p.end()
 
     
-