stop imageManager thread on shutdown

openlp/core/lib/imagemanager.py

@@ -167,8 +167,9 @@ class ImageManager(QtCore.QObject):
         self.width = current_screen[u'size'].width()
         self.height = current_screen[u'size'].height()
         self._cache = {}
-        self._imageThread = ImageThread(self)
+        self.imageThread = ImageThread(self)
         self._conversion_queue = PriorityQueue()
+        self.stop_manager = False
         QtCore.QObject.connect(Receiver.get_receiver(),
             QtCore.SIGNAL(u'config_updated'), self.process_updates)
 
@@ -219,8 +220,8 @@ class ImageManager(QtCore.QObject):
         Flush the queue to updated any data to update
         """
         # We want only one thread.
-        if not self._imageThread.isRunning():
+        if not self.imageThread.isRunning():
-            self._imageThread.start()
+            self.imageThread.start()
 
     def get_image(self, name):
         """
@@ -282,15 +283,15 @@ class ImageManager(QtCore.QObject):
         else:
             log.debug(u'Image in cache %s:%s' % (name, path))
         # We want only one thread.
-        if not self._imageThread.isRunning():
+        if not self.imageThread.isRunning():
-            self._imageThread.start()
+            self.imageThread.start()
 
     def _process(self):
         """
         Controls the processing called from a ``QtCore.QThread``.
         """
         log.debug(u'_process - started')
-        while not self._conversion_queue.empty():
+        while not self._conversion_queue.empty() and not self.stop_manager:
             self._process_cache()
         log.debug(u'_process - ended')
 

openlp/core/ui/mainwindow.py

@@ -30,6 +30,7 @@ import os
 import sys
 import shutil
 from tempfile import gettempdir
+import time
 from datetime import datetime
 
 from PyQt4 import QtCore, QtGui
@@ -1134,6 +1135,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
         """
         # If we just did a settings import, close without saving changes.
         if self.settingsImported:
+            self.cleanUp(False)
             event.accept()
         if self.serviceManagerContents.isModified():
             ret = self.serviceManagerContents.saveModifiedService()
@@ -1156,8 +1158,7 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
                     translate('OpenLP.MainWindow',
                         'Are you sure you want to close OpenLP?'),
                     QtGui.QMessageBox.StandardButtons(
-                        QtGui.QMessageBox.Yes |
+                        QtGui.QMessageBox.Yes | QtGui.QMessageBox.No),
-                        QtGui.QMessageBox.No),
                     QtGui.QMessageBox.Yes)
                 if ret == QtGui.QMessageBox.Yes:
                     self.cleanUp()
@@ -1168,10 +1169,18 @@ class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
                 self.cleanUp()
                 event.accept()
 
-    def cleanUp(self):
+
+    def cleanUp(self, save_settings=True):
         """
-        Runs all the cleanup code before OpenLP shuts down
+        Runs all the cleanup code before OpenLP shuts down.
+
+        ``save_settings``
+            Switch to prevent saving settings. Defaults to **True**.
         """
+        self.imageManager.stop_manager = True
+        while self.imageManager.imageThread.isRunning():
+            time.sleep(0.1)
+        if save_settings:
             # Clean temporary files used by services
             self.serviceManagerContents.cleanUp()
             if QtCore.QSettings().value(u'advanced/save current plugin',