add LessAnnoyingDoubleSpinBox

widgets/spinBox/LessAnnoyingDoubleSpinBox.hh

+//=============================================================================
+//
+//  CLASS LessAnnoyingQDoubleSpinBox
+//
+//=============================================================================
+
+
+#ifndef LESSANNOYINGDOUBLESPINBOX_HH
+#define LESSANNOYINGDOUBLESPINBOX_HH
+
+#include <QDoubleSpinBox>
+#include <QWidget>
+
+class LessAnnoyingDoubleSpinBox : public QDoubleSpinBox
+{
+
+public:
+
+
+  LessAnnoyingDoubleSpinBox(QWidget* _qwidget = Q_NULLPTR ) : QDoubleSpinBox(_qwidget)
+  {
+  }
+
+  virtual QValidator::State validate(QString& text, int&) const override
+  {
+    QString copy = strip_prefix_suffix(text) + "0";
+
+    bool ok;
+    copy.toDouble(&ok);
+    if ( ok )
+      return QValidator::Acceptable;
+    else
+      return QValidator::Invalid;
+  }
+
+  virtual double valueFromText(const QString &text) const override
+  {
+    QString copy = strip_prefix_suffix(text);
+
+    bool ok;
+    double value = copy.toDouble(&ok);
+
+    double factor = pow(10.0, decimals() );
+    value = double( long(value * double(factor) + 0.5) ) / factor;
+
+    if ( !ok )
+      return 0;
+
+    return value;
+  }
+
+private:
+
+  QString strip_prefix_suffix(const QString& text) const
+  {
+    int lenpre = prefix().length();
+    int lensuf = suffix().length();
+
+    return text.mid( lenpre, text.length() - lenpre -lensuf ).simplified();
+  }
+
+};
+
+//=============================================================================
+#endif // LESSANNOYINGDOUBLESPINBOX_HH defined
+//=============================================================================
+