Add pretty printer for Qt enums.

src/core/utilities.cpp

@@ -35,6 +35,7 @@
 #include <QXmlStreamReader>
 #include <QtDebug>
 #include <QtGlobal>
+#include <QMetaEnum>
 
 #if defined(Q_OS_UNIX)
 #  include <sys/statvfs.h>
@@ -395,6 +396,17 @@ void ConsumeCurrentElement(QXmlStreamReader* reader) {
   }
 }
 
+const char* EnumToString(const QMetaObject& meta, const char* name, int value) {
+  int index = meta.indexOfEnumerator(name);
+  if (index == -1)
+    return "[UnknownEnum]";
+  QMetaEnum metaenum = meta.enumerator(index);
+  const char* result = metaenum.valueToKey(value);
+  if (result == 0)
+    return "[UnknownEnumValue]";
+  return result;
+}
+
 }  // namespace Utilities
 
 

src/core/utilities.h

@@ -30,6 +30,7 @@
 class QIODevice;
 class QMouseEvent;
 class QXmlStreamReader;
+class QMetaObject;
 
 namespace Utilities {
   QString PrettyTime(int seconds);
@@ -81,6 +82,11 @@ namespace Utilities {
   // file - whichever came first.
   void ConsumeCurrentElement(QXmlStreamReader* reader);
 
+  // Shortcut for getting a Qt-aware enum value as a string.
+  // Pass in the QMetaObject of the class that owns the enum, the string name of
+  // the enum and a valid value from that enum.
+  const char* EnumToString(const QMetaObject& meta, const char* name, int value);
+
 
   enum ConfigPath {
     Path_Root,