text resizes correctly when resizing the slidecontrollers, clean ups

openlp/core/lib/serviceitem.py

@@ -60,6 +60,7 @@ class ItemCapabilities(object):
     AddIfNewItem = 9
     ProvidesOwnDisplay = 10
 
+
 class ServiceItem(object):
     """
     The service item is a base class for the plugins to use to interact with

openlp/core/ui/slidecontroller.py

@@ -399,7 +399,8 @@ class SlideController(QtGui.QWidget):
     def previewSizeChanged(self):
         """
         Takes care of the SlidePreview's size. Is called when one of the the
-        splitters is moved or when the screen size is changed.
+        splitters is moved or when the screen size is changed. Note, that this
+        method is (also) called frequently from the mainwindow *paintEvent*.
         """
         if self.ratio < float(self.PreviewFrame.width()) / float(
             self.PreviewFrame.height()):
@@ -412,10 +413,16 @@ class SlideController(QtGui.QWidget):
             max_width = self.PreviewFrame.width() - self.grid.margin() * 2
             self.SlidePreview.setFixedSize(QtCore.QSize(max_width,
                 max_width / self.ratio))
+        # Make sure that the frames have the correct size.
+        self.PreviewListWidget.setColumnWidth(0,
+            self.PreviewListWidget.viewport().size().width())
+        if self.serviceItem:
+            # Sort out songs, bibles, etc.
+            if self.serviceItem.is_text():
+                self.PreviewListWidget.resizeRowsToContents()
+            else:
+                # Sort out image heights.
                 width = self.parent.ControlSplitter.sizes()[self.split]
-        self.PreviewListWidget.setColumnWidth(0, width)
-        # Sort out image heights (Songs, bibles excluded)
-        if self.serviceItem and not self.serviceItem.is_text():
                 for framenumber in range(len(self.serviceItem.get_frames())):
                     self.PreviewListWidget.setRowHeight(
                         framenumber, width / self.ratio)