Added PathButton -- simple button displaying a QPainterPath

widgets/PathButton.py

@@ -0,0 +1,50 @@
+from pyqtgraph.Qt import QtGui, QtCore
+import pyqtgraph as pg
+__all__ = ['PathButton']
+
+
+class PathButton(QtGui.QPushButton):
+    """Simple PushButton extension which paints a QPainterPath on its face"""
+    def __init__(self, parent=None, path=None, pen='default', brush=None, size=(30,30)):
+        QtGui.QPushButton.__init__(self, parent)
+        self.path = None
+        if pen == 'default':
+            pen = 'k'
+        self.setPen(pen)
+        self.setBrush(brush)
+        if path is not None:
+            self.setPath(path)
+        if size is not None:
+            self.setFixedWidth(size[0])
+            self.setFixedHeight(size[1])
+            
+            
+    def setBrush(self, brush):
+        self.brush = pg.mkBrush(brush)
+        
+    def setPen(self, pen):
+        self.pen = pg.mkPen(pen)
+        
+    def setPath(self, path):
+        self.path = path
+        self.update()
+        
+    def paintEvent(self, ev):
+        QtGui.QPushButton.paintEvent(self, ev)
+        margin = 7
+        geom = QtCore.QRectF(0, 0, self.width(), self.height()).adjusted(margin, margin, -margin, -margin)
+        rect = self.path.boundingRect()
+        scale = min(geom.width() / float(rect.width()), geom.height() / float(rect.height()))
+        
+        p = QtGui.QPainter(self)
+        p.setRenderHint(p.Antialiasing)
+        p.translate(geom.center())
+        p.scale(scale, scale)
+        p.translate(-rect.center())
+        p.setPen(self.pen)
+        p.setBrush(self.brush)
+        p.drawPath(self.path)
+        p.end()
+        
+    
+