Report.report_table: handle QColor as BackgroundRole

Author: kernc

Orange/canvas/report/report.py

@@ -3,7 +3,7 @@
 from collections import OrderedDict, Iterable
 from itertools import chain
 from PyQt4.QtCore import Qt, QAbstractItemModel, QByteArray, QBuffer, QIODevice, QLocale
-from PyQt4.QtGui import QGraphicsScene, QTableView, QColor
+from PyQt4.QtGui import QGraphicsScene, QTableView, QColor, QBrush
 
 from Orange.util import try_
 from Orange.widgets.io import PngFormat
@@ -222,10 +222,12 @@ def data(role=Qt.DisplayRole,
                             if view and row is not None and col is not None else False)
 
                 fgcolor = data(Qt.ForegroundRole)
-                fgcolor = fgcolor.color().name() if fgcolor else 'black'
+                fgcolor = (QBrush(fgcolor).color().name()
+                           if isinstance(fgcolor, (QBrush, QColor)) else 'black')
 
                 bgcolor = data(Qt.BackgroundRole)
-                bgcolor = bgcolor.color().name() if bgcolor else 'transparent'
+                bgcolor = (QBrush(bgcolor).color().name()
+                           if isinstance(bgcolor, (QBrush, QColor)) else 'transparent')
                 if bgcolor.lower() == '#ffffff':
                     bgcolor = 'transparent'