Fix crash when setting font decorations on text drawn with QStaticText

Qt has a run-time assert for implementing drawPolygon() in any subclass
of QPaintEngine, which will be hit if set font decorations on the font
used by QStaticText. Since we don't care about line decorations or any
other shapes drawn in the QTextLayout, we simply leave the
implementation empty.

Reviewed-by: Gunnar
(cherry picked from commit 43f37074391b338b250883dfeb4a16844ca759fd)

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gui/text/qstatictext.cpp b/src/gui/text/qstatictext.cpp
index 7dc4355..d986a48 100644
--- a/src/gui/text/qstatictext.cpp
+++ b/src/gui/text/qstatictext.cpp
@@ -472,7 +472,12 @@ namespace {
             qMemCopy(charsDestination, ti.chars, sizeof(QChar) * currentItem.numChars);
 
             m_items.append(currentItem);
-        }                
+        }
+
+        virtual void drawPolygon(const QPointF *, int , PolygonDrawMode )
+        {
+            /* intentionally empty */
+        }
 
         virtual bool begin(QPaintDevice *)  { return true; }
         virtual bool end() { return true; }