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core: add CRTP base class to unit types

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The goal here is to add general addition and scalar multiplication
functions to the unit types.

Thereto, we need a CRTP
(https://en.wikipedia.org/wiki/Curiously_recurring_template_pattern)
base class.

However, this breaks compound initialization, so we have to use
named initializers:
	weight_t { 2000 } -> weight_t { .grams = 2000 }
The good thing is that this is exactly how these classes were
supposed to be used: make the unit explicit!

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2024-09-01 21:48:31 +02:00 • committed by bstoeger
parent 696ba61eef
commit 12ca172a9e
26 changed files with 127 additions and 138 deletions
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27
core/qthelper.cpp
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@ -786,33 +786,6 @@ int parseTemperatureToMkelvin(const QString &text)
return mkelvin;
}
int parseWeightToGrams(const QString &text)
{
int grams;
QString numOnly = text;
numOnly.replace(",", ".").remove(QRegularExpression("[^0-9.]"));
if (numOnly.isEmpty())
return 0;
double number = numOnly.toDouble();
if (text.contains(gettextFromC::tr("kg"), Qt::CaseInsensitive)) {
grams = lrint(number * 1000);
} else if (text.contains(gettextFromC::tr("lbs"), Qt::CaseInsensitive)) {
grams = lbs_to_grams(number);
} else {
switch (prefs.units.weight) {
case units::KG:
grams = lrint(number * 1000);
break;
case units::LBS:
grams = lbs_to_grams(number);
break;
default:
grams = 0;
}
}
return grams;
}
int parsePressureToMbar(const QString &text)
{
int mbar;