From 6482ff7a49c5910d37b744c4192a6ec830c8b447 Mon Sep 17 00:00:00 2001
From: jkriege2 <jan@jkrieger.de>
Date: Fri, 15 Mar 2024 11:36:40 +0100
Subject: [PATCH] FIX another bug from issue #124: a use of private Qt-API,
 which is undocumented and not present in all cases was replaced ...

---
 lib/jkqtcommon/jkqtpbasicimagetools.h | 3 ++-
 lib/jkqtcommon/jkqttools.h            | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lib/jkqtcommon/jkqtpbasicimagetools.h b/lib/jkqtcommon/jkqtpbasicimagetools.h
index 907f48dea09..8074e8f53fb 100644
--- a/lib/jkqtcommon/jkqtpbasicimagetools.h
+++ b/lib/jkqtcommon/jkqtpbasicimagetools.h
@@ -33,6 +33,7 @@
 #include <limits>
 #include "jkqtcommon/jkqtcommon_imexport.h"
 #include "jkqtcommon/jkqtpmathtools.h"
+#include "jkqtcommon/jkqttools.h"
 
 /** \brief possible datatypes of the data array, plotted by this class.
     \ingroup jkqtplotter_imagelots_tools
@@ -1203,7 +1204,7 @@ class JKQTCOMMON_LIB_EXPORT JKQTPPaletteList: public QList<QPair<double, QRgb> >
             push_back(v.first, v.second);
         }
     }
-    template <typename InputIterator, QtPrivate::IfIsInputIterator<InputIterator> = true>
+    template <typename InputIterator, JKQTPIsInputIteratorTrait<InputIterator> = true>
     inline JKQTPPaletteList(InputIterator first, InputIterator last): ListType(first, last) {}
     inline JKQTPPaletteList(ListType &&other):ListType(std::forward<ListType>(other)) {}
     inline JKQTPPaletteList(const ListType &other):ListType(other) {}
diff --git a/lib/jkqtcommon/jkqttools.h b/lib/jkqtcommon/jkqttools.h
index 75712dd9e08..d39bd2bcb00 100644
--- a/lib/jkqtcommon/jkqttools.h
+++ b/lib/jkqtcommon/jkqttools.h
@@ -95,5 +95,12 @@ JKQTCOMMON_LIB_EXPORT void jkloadSplitter(QSettings& settings, QSplitter* splitt
  */
 JKQTCOMMON_LIB_EXPORT quint16 jkqtp_checksum(const void* data, size_t len);
 
+/** \brief Checks whether a given iterator is an input iterator (std::input_iterator_tag)
+ *  \ingroup jkqtptools_general
+ *
+ **/
+template <typename Iterator>
+using JKQTPIsInputIteratorTrait = typename std::enable_if<std::is_convertible<typename std::iterator_traits<Iterator>::iterator_category, std::input_iterator_tag>::value, bool>::type;
+
 
 #endif // JKQTTOOLS_H