refs #289, negative time values supported, required for time offset

src/blackmisc/pqphysicalquantity.h

@@ -219,6 +219,18 @@ namespace BlackMisc
                 return !this->isZeroEpsilonConsidered() && this->m_value < 0;
             }
 
+            //! Make value always positive
+            void makePositive()
+            {
+                if (this->m_value < 0) { this->m_value *= -1.0; }
+            }
+
+            //! Make value always negative
+            void makeNegative()
+            {
+                if (this->m_value > 0) { this->m_value *= -1.0; }
+            }
+
             //! \copydoc CValueObject::marshallToDbus
             virtual void marshallToDbus(QDBusArgument &argument) const override;
 

src/blackmisc/pqstring.cpp

@@ -95,9 +95,14 @@ namespace BlackMisc
          */
         QVariant CPqString::parseToVariant(const QString &value, SeparatorMode mode)
         {
-            static QRegExp rx("([0-9]+)\\s*(\\D*)$");
+            static QRegExp rx("([-+]?[0-9]*[\\.,]?[0-9]+)\\s*(\\D*)$");
             QVariant v;
-            if (value.isEmpty()) return v;
+
+            // fine tuning of the string
+            QString vs = value.trimmed().simplified();
+
+            // check
+            if (vs.isEmpty()) return v;
 
             if (rx.indexIn(value) < 0) return v; // not a valid number
             QString unit = rx.cap(2).trimmed();

src/blackmisc/pqtime.cpp

@@ -6,7 +6,8 @@ namespace BlackMisc
     {
         CTime::CTime(int hours, int minutes, int seconds) : CPhysicalQuantity(0, CTimeUnit::nullUnit())
         {
-            double value = hours + minutes / 100.0 + seconds / 10000.0;
+            bool negative = (hours < 0);
+            double value = qAbs(hours) + minutes / 100.0 + seconds / 10000.0;
             if (minutes == 0 && seconds == 0)
             {
                 (*this) = CTime(hours, CTimeUnit::h());
@@ -18,18 +19,39 @@ namespace BlackMisc
                 else
                     (*this) = CTime(value, CTimeUnit::hms());
             }
+            if (negative)
+            {
+                this->makeNegative();
+            }
         }
 
-        CTime::CTime(const QTime &time) : CPhysicalQuantity(0, CTimeUnit::nullUnit())
+        CTime::CTime(const QTime &time, bool negative) : CPhysicalQuantity(0, CTimeUnit::nullUnit())
         {
             CTime converted(time.hour(), time.minute(), time.second());
             (*this) = converted;
+            if (negative)
+            {
+                this->makeNegative();
+            }
         }
 
         void CTime::parseFromString(const QString &time)
         {
             QTime t;
-            const QString ts = time.trimmed();
+            QString ts = time.trimmed();
+
+            // deal with sign
+            double factor = 1.0;
+            if (ts.startsWith('+'))
+            {
+                ts.remove(0, 1);
+            }
+            else if (ts.startsWith('-'))
+            {
+                factor = -1.0;
+                ts.remove(0, 1);
+            }
+
             if (ts.contains(":") && (ts.length() == 8 || ts.length() == 5))
             {
                 if (ts.length() == 5)
@@ -37,15 +59,27 @@ namespace BlackMisc
                 else if (ts.length() == 8)
                     t = QTime::fromString(ts, "hh:mm:ss");
                 (*this) = CTime(t);
+
+                // fix sign if required
+                if (factor < 0)
+                {
+                    this->setValueSameUnit(this->value() * factor);
+                }
             }
             else
-                CPhysicalQuantity::parseFromString(ts);
+                CPhysicalQuantity::parseFromString(time);
         }
 
         QTime CTime::toQTime() const
         {
             CTime copy(*this);
             copy.setUnit(CTimeUnit::hms());
+
+            // QTime is not defined for negative numbers
+            // so we use the absolute value here
+            copy.makePositive();
+
+            // convert
             QString s = copy.toQString(false).replace('h', ':').replace('m', ':').replace('s', "");
             QTime t = s.length() == 8 ?
                       QTime::fromString(s, "hh:mm:ss") :
@@ -60,5 +94,39 @@ namespace BlackMisc
             parts << t.hour() << t.minute() << t.second();
             return parts;
         }
+
+        QString CTime::formattedHrsMinSec() const
+        {
+            QList<int> parts = getHrsMinSecParts();
+            QString h = QString("00%1").arg(QString::number(parts.at(0))).right(2);
+            QString m = QString("00%1").arg(QString::number(parts.at(1))).right(2);
+            QString s = QString("00%1").arg(QString::number(parts.at(2))).right(2);
+
+            QString fs = QString("%1:%2:%3").arg(h).arg(m).arg(s);
+            if (this->isNegativeWithEpsilonConsidered())
+            {
+                return QString("-").append(fs);
+            }
+            else
+            {
+                return fs;
+            }
+        }
+
+        QString CTime::formattedHrsMin() const
+        {
+            QList<int> parts = getHrsMinSecParts();
+            QString h = QString("00%1").arg(QString::number(parts.at(0))).right(2);
+            QString m = QString("00%1").arg(QString::number(parts.at(1))).right(2);
+            QString fs = QString("%1:%2").arg(h).arg(m);
+            if (this->isNegativeWithEpsilonConsidered())
+            {
+                return QString("-").append(fs);
+            }
+            else
+            {
+                return fs;
+            }
+        }
     }
 }

src/blackmisc/pqtime.h

@@ -38,7 +38,7 @@ namespace BlackMisc
             CTime(int hours, int minutes, int seconds = 0);
 
             //! By Qt time
-            CTime(const QTime &time);
+            CTime(const QTime &time, bool negative = false);
 
             //! \copydoc CPhysicalQuantity(const QString &unitString)
             CTime(const QString &unitString) : CPhysicalQuantity(0, CTimeUnit::nullUnit()) { this->parseFromString(unitString); }
@@ -53,11 +53,19 @@ namespace BlackMisc
             virtual void parseFromString(const QString &time) override;
 
             //! To Qt time
+            //! \warning sign not considered
             QTime toQTime() const;
 
             //! Parts hh, mm, ss
+            //! \warning sign not considered
             QList<int> getHrsMinSecParts() const;
 
+            //! Formatted as hh:mm:ss
+            QString formattedHrsMinSec() const;
+
+            //! Formatted as hh:mm
+            QString formattedHrsMin() const;
+
         };
 
     } // namespace