View difference between Paste ID: a04tvY0U and wrUX5Ce0

 import sys
 from PySide.QtCore import *
 from PySide.QtGui import *
-
+
 class TestFrame( QFrame ):
-    def __init__( self, parent=None ):
+    def __init__( self, area, parent=None ):
         super( TestFrame, self ).__init__( parent )
         self.setFrameStyle( QFrame.StyledPanel )
-        self.setSizePolicy( parent.sizePolicy() ) # THIS DOESN'T SEEM TO HAVE ANY EFFECT
+        self.area = area
-
+        self.frame_height = self.height()
-class SliderWidget( QWidget ):
+
     def setHeight(self, height):
         self.frame_height = height
 
     def resetGeometry(self, size):
         height = self.frame_height
 
-
+        x = 0
         width = size.width()
 
         if self.area == Qt.TopDockWidgetArea:
             y = 0
-        self.frameCentre = TestFrame( self )
+
-        self.frameTop = TestFrame( self.frameCentre )
+        elif self.area == Qt.BottomDockWidgetArea:
-        self.frameBottom = TestFrame( self.frameCentre )
+            y = size.height() - height
 
-
+        super(TestFrame, self).setGeometry(x, y, width, height)
-        # TOOLTIPS
+
 class CentralFrame(QFrame):
 
     resized = Signal(QSize)
-
+
     def resizeEvent(self, event):
         assert isinstance(event, QResizeEvent)
 
-        # RESIZE AND REPO TOP AND BOTTOM FRAMES
+        self.resized.emit(event.size())
-        # THIS IS WHERE I HAVE TROUBLE TO SET THE RIGHT SIZE AND POSITION
+
-        # I'VE SET ABSOLUTE POSITION AND SCALE JUST TO ILLUSTRATE WHAT I'M AFTER.
+class SliderWidget(QMainWindow):
-        # THIS REALLY NEEDS TO BE LINKED TO THE PARENT SO THE TOP AND BOTOM FRAMES ARE ALWAYS THE SAME WIDTH
+
-        # AND HAVE THE SAME SIZE POLICY AS THE MIDDLE FRAME
+
-        self.frameTop.setGeometry( 0, 0, 800, 100 )
+
-        self.frameBottom.setGeometry( 0, 600, 800, 100 )
+
-
+
         self.setLayout( QGridLayout() )
-        #self.frameTop.hide()
+
-        #self.frameBottom.hide()
+
         self.animGroup = QParallelAnimationGroup()
 
-        self.layout().addWidget( self.frameCentre )
+
-        self.layout().addWidget( self.btn )
+        self.frameCentre = CentralFrame( self )
-
+        self.frameTop = TestFrame( Qt.TopDockWidgetArea, self.frameCentre )
-
+        self.frameBottom = TestFrame( Qt.BottomDockWidgetArea, self.frameCentre )
         self.frameCentre.resized.connect(self.frameTop.resetGeometry)
         self.frameCentre.resized.connect(self.frameBottom.resetGeometry)
         self.btn = QPushButton( 'GO' )
 
         self.frameTop.setHeight(200)
-
+        self.frameBottom.setHeight(200)
         self.frameCentre.setMinimumHeight(500)
 
         # TOOLTIPS
         self.frameTop.setToolTip( 'frame top' )
         self.frameCentre.setToolTip( 'frame centre' )
-            start = -1000
+
 
         # SLIDE IN TOP AND BOTTOM FRAMES
-            start = 900
+
-            end = 600
+
-
+
         self.frameTop.hide()
         self.frameBottom.hide()
 
         # ADD CENTRETO LAYOUT
-
+        self.setCentralWidget(self.frameCentre)
         layout = QVBoxLayout(self.frameCentre)
         layout.addWidget(self.btn)
         self.frameCentre.setLayout(layout)
 
 
     def moveWidgets( self ):
         '''trigger animations'''
         self.animGroup.clear()
-
+
         self.slideInWidget( self.frameBottom, 'bottomUp')
-
+
 
     def slideInWidget( self, widget, direction ):
         '''assign animation to frames'''
         assert direction in ( 'topDown', 'bottomUp' )
         # DEFINE START AND END POSITION - THIS IS WHERE I HAVE TROUBLE SETTING THE RIGHT POSITION
         if direction == 'topDown':
             start = widget.height() * -1
             end = 0
         elif direction == 'bottomUp':
             start = self.centralWidget().height()
             end = self.centralWidget().height() - widget.height()
 
         # START ANIMATION
         widget.show()
         slideInAnim = self.slideAnimation( widget, start, end )
         self.animGroup.addAnimation( slideInAnim )
 
     def slideAnimation( self, widget, start, end ):
         '''Define sliding animation'''
         slideAnimation = QPropertyAnimation( widget, 'pos' )
         slideAnimation.setDuration( 1000 )
         slideAnimation.setStartValue( QPoint( widget.pos().x(), start ) )
         slideAnimation.setEndValue( QPoint( widget.pos().x(), end ) )
         slideAnimation.setEasingCurve( QEasingCurve.OutCubic )
         return slideAnimation
 
 if __name__ == "__main__":
 
     app = QApplication(sys.argv)
     sw = SliderWidget()
 
     sw.resize( 800, 750 )
     sw.show()
 
     sys.exit(app.exec_())