resize controllers when resizing or moving the docks

openlp/core/lib/dockwidget.py

@@ -29,7 +29,7 @@ QDockWidget.
 """
 import logging
 
-from PyQt4 import QtCore, QtGui
+from PyQt4 import QtGui
 
 log = logging.getLogger(__name__)
 
@@ -48,3 +48,16 @@ class OpenLPDockWidget(QtGui.QDockWidget):
             self.setObjectName(name)
         self.setFloating(False)
 
+    def moveEvent(self, event):
+        """
+        Called, when the DockWidget is moved.
+        """
+        self.parent.liveController.previewSizeChanged()
+        self.parent.previewController.previewSizeChanged()
+
+    def resizeEvent(self, event):
+        """
+        Called, when the DockWidget is resized.
+        """
+        self.parent.liveController.previewSizeChanged()
+        self.parent.previewController.previewSizeChanged()

openlp/core/ui/slidecontroller.py

@@ -297,7 +297,6 @@ class SlideController(QtGui.QWidget):
         Phonon.createPath(self.mediaObject, self.audio)
         if not self.isLive:
             self.video.setGeometry(QtCore.QRect(0, 0, 300, 225))
-            self.video.setVisible(False)
         self.SlideLayout.insertWidget(0, self.video)
         # Actual preview screen
         self.SlidePreview = QtGui.QLabel(self)