Improve frequency input validation

Allow group separators as well as decimal points in MHz input fields

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7462 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

FrequencyLineEdit.cpp

@@ -1,16 +1,45 @@
 #include "FrequencyLineEdit.hpp"
 
-#include <QRegExpValidator>
-#include <QRegExp>
+#include <limits>
+
+#include <QDoubleValidator>
 #include <QString>
 #include <QLocale>
 
 #include "moc_FrequencyLineEdit.cpp"
 
+namespace
+{
+  class MHzValidator
+    : public QDoubleValidator
+  {
+  public:
+    MHzValidator (double bottom, double top, QObject * parent = nullptr)
+      : QDoubleValidator {bottom, top, 6, parent}
+    {
+    }
+
+    State validate (QString& input, int& pos) const override
+    {
+      State result = QDoubleValidator::validate (input, pos);
+      if (Acceptable == result)
+        {
+          bool ok;
+          (void)QLocale {}.toDouble (input, &ok);
+          if (!ok)
+            {
+              result = Intermediate;
+            }
+        }
+      return result;
+    }
+  };
+}
+
 FrequencyLineEdit::FrequencyLineEdit (QWidget * parent)
   : QLineEdit (parent)
 {
-  setValidator (new QRegExpValidator {QRegExp {QString {R"(\d{0,6}(\)"} + QLocale {}.decimalPoint () + R"(\d{0,6})?)"}, this});
+  setValidator (new MHzValidator {0., std::numeric_limits<Radio::Frequency>::max () / 10.e6, this});
 }
 
 auto FrequencyLineEdit::frequency () const -> Frequency
@@ -27,7 +56,8 @@ void FrequencyLineEdit::frequency (Frequency f)
 FrequencyDeltaLineEdit::FrequencyDeltaLineEdit (QWidget * parent)
   : QLineEdit (parent)
 {
-  setValidator (new QRegExpValidator {QRegExp {QString {R"(-?\d{0,6}(\)"} + QLocale {}.decimalPoint () + R"(\d{0,6})?)"}, this});
+  setValidator (new MHzValidator {-std::numeric_limits<FrequencyDelta>::max () / 10.e6,
+        std::numeric_limits<FrequencyDelta>::max () / 10.e6, this});
 }
 
 auto FrequencyDeltaLineEdit::frequency_delta () const -> FrequencyDelta

FrequencyList.cpp

@@ -17,6 +17,7 @@
 #include <QDebug>
 #include <QDebugStateSaver>
 
+#include "Radio.hpp"
 #include "Bands.hpp"
 #include "pimpl_impl.hpp"
 
@@ -480,7 +481,7 @@ bool FrequencyList::impl::setData (QModelIndex const& model_index, QVariant cons
         case frequency_column:
           if (value.canConvert<Frequency> ())
             {
-              auto frequency = value.value<Frequency> ();
+              Radio::Frequency frequency {qvariant_cast <Radio::Frequency> (value)};
               if (frequency != item.frequency_)
                 {
                   item.frequency_ = frequency;

Radio.cpp

@@ -1,6 +1,7 @@
 #include "Radio.hpp"
 
 #include <cmath>
+#include <limits>
 
 #include <QString>
 #include <QChar>
@@ -19,32 +20,53 @@ namespace Radio
   }
 
 
-  Frequency frequency (QVariant const& v, int scale, QLocale const& locale)
+  Frequency frequency (QVariant const& v, int scale, bool * ok, QLocale const& locale)
   {
-    double value {0};
+    double value {0.};
     if (QVariant::String == v.type ())
       {
-        value = locale.toDouble (v.value<QString> ());
+        value = locale.toDouble (v.value<QString> (), ok);
       }
     else
       {
         value = v.toDouble ();
+        if (ok) *ok = true;
       }
-    return std::llround (value * std::pow (10., scale));
+    value *= std::pow (10., scale);
+    if (ok)
+      {
+        if (value < 0. || value > std::numeric_limits<Frequency>::max ())
+          {
+            value = 0.;
+            *ok = false;
+          }
+      }
+    return std::llround (value);
   }
 
-  FrequencyDelta frequency_delta (QVariant const& v, int scale, QLocale const& locale)
+  FrequencyDelta frequency_delta (QVariant const& v, int scale, bool * ok, QLocale const& locale)
   {
-    double value {0};
+    double value {0.};
     if (QVariant::String == v.type ())
       {
-        value = locale.toDouble (v.value<QString> ());
+        value = locale.toDouble (v.value<QString> (), ok);
       }
     else
       {
         value = v.toDouble ();
+        if (ok) *ok = true;
       }
-    return std::llround (value * std::pow (10., scale));
+    value *= std::pow (10., scale);
+    if (ok)
+      {
+        if (value < -std::numeric_limits<Frequency>::max ()
+            || value > std::numeric_limits<Frequency>::max ())
+          {
+            value = 0.;
+            *ok = false;
+          }
+      }
+    return std::llround (value);
   }
 
 

Radio.hpp

@@ -34,8 +34,10 @@ namespace Radio
   //	QVariant argument is convertible to double and is assumed to
   //	be scaled by (10 ** -scale).
   //
-  Frequency UDP_EXPORT frequency (QVariant const&, int scale, QLocale const& = QLocale ());
-  FrequencyDelta UDP_EXPORT frequency_delta (QVariant const&, int scale, QLocale const& = QLocale ());
+  Frequency UDP_EXPORT frequency (QVariant const&, int scale,
+                                  bool * ok = nullptr, QLocale const& = QLocale ());
+  FrequencyDelta UDP_EXPORT frequency_delta (QVariant const&, int scale,
+                                             bool * ok = nullptr, QLocale const& = QLocale ());
 
   //
   // Frequency type formatting

StationList.cpp

@@ -18,6 +18,7 @@
 
 #include "pimpl_impl.hpp"
 
+#include "Radio.hpp"
 #include "Bands.hpp"
 #include "FrequencyList.hpp"
 
@@ -403,9 +404,16 @@ bool StationList::impl::setData (QModelIndex const& model_index, QVariant const&
 
         case offset_column:
           {
-            stations_[row].offset_ = value.value<FrequencyDelta> ();
-            Q_EMIT dataChanged (model_index, model_index, roles);
-            changed = true;
+            if (value.canConvert<FrequencyDelta> ())
+              {
+                FrequencyDelta offset {qvariant_cast<Radio::FrequencyDelta> (value)};
+                if (offset != stations_[row].offset_)
+                  {
+                    stations_[row].offset_ = offset;
+                    Q_EMIT dataChanged (model_index, model_index, roles);
+                    changed = true;
+                  }
+              }
           }
           break;