+static QString format_time_with_si(double t, QString unit, int prefix,
+ unsigned int precision, bool sign)
+{
+ // The precision is always given without taking the prefix into account
+ // so we need to deduct the number of decimals the prefix might imply
+ const int prefix_order =
+ -(prefix * 3 + pv::util::FirstSIPrefixPower);
+
+ const unsigned int relative_prec =
+ (prefix >= pv::util::FirstSIPrefix) ? precision :
+ std::max((int)(precision - prefix_order), 0);
+
+ return format_si_value(t, unit, prefix, relative_prec, sign);
+}
+
+QString format_time(double t, int prefix, TimeUnit unit,
+ unsigned int precision, double step_size, bool sign)
+{
+ // Make 0 appear as 0, not random +0 or -0
+ if (fabs(t) < MinTimeDelta)
+ return "0";
+
+ // If we have to use samples then we have no alternative formats
+ if (unit == Samples)
+ return format_time_with_si(t, "sa", prefix, precision, sign);
+
+ // View zoomed way out -> low precision (0), high step size (>=60s)
+ // -> DD:HH:MM
+ if ((precision == 0) && (step_size >= 60))
+ return format_time_in_full(t, -1, sign);
+
+ // View in "normal" range -> medium precision, medium step size
+ // -> HH:MM:SS.mmm... or xxxx (si unit) if less than 60 seconds
+ // View zoomed way in -> high precision (>3), low step size (<1s)
+ // -> HH:MM:SS.mmm... or xxxx (si unit) if less than 60 seconds
+ if (abs(t) < 60)
+ return format_time_with_si(t, "s", prefix, precision, sign);
+ else
+ return format_time_in_full(t, precision, sign);
+}
+
+QString format_second(double second)
+{
+ return format_si_value(second, "s", -1, 0, false);
+}
+