Make Format() constructed as fast as possible.

QMetaType::type("XlsxColor") is not fast.

src/xlsx/xlsxformat.cpp

@@ -180,14 +180,6 @@ FormatPrivate::~FormatPrivate()
  */
 Format::Format()
 {
-    if (QMetaType::type("XlsxColor") == QMetaType::UnknownType) {
-        //Fix me! Where should we put these register code?
-        qRegisterMetaType<XlsxColor>("XlsxColor");
-        qRegisterMetaTypeStreamOperators<XlsxColor>("XlsxColor");
-#if QT_VERSION >= 0x050200
-        QMetaType::registerDebugStreamOperator<XlsxColor>();
-#endif
-    }
     //The d pointer is initialized with a null pointer
 }
 

src/xlsx/xlsxstyles.cpp

@@ -47,6 +47,15 @@ Styles::Styles(CreateFlag flag)
 {
     //!Fix me. Should the custom num fmt Id starts with 164 or 176 or others??
 
+    //!Fix me! Where should we put these register code?
+    if (QMetaType::type("XlsxColor") == QMetaType::UnknownType) {
+        qRegisterMetaType<XlsxColor>("XlsxColor");
+        qRegisterMetaTypeStreamOperators<XlsxColor>("XlsxColor");
+#if QT_VERSION >= 0x050200
+        QMetaType::registerDebugStreamOperator<XlsxColor>();
+#endif
+    }
+
     if (flag == F_NewFromScratch) {
         //Add default Format
         Format defaultFmt;