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AK+LibWeb: Make clamp_to_int generic over all integrals

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timmot 2023-11-18 20:00:14 +11:00 committed by Andreas Kling
parent cf7b13c708
commit da3cfd5bbc
Notes: sideshowbarker 2024-07-16 20:44:03 +09:00 
Author: https://github.com/timmot
Commit: https://github.com/SerenityOS/serenity/commit/da3cfd5bbc
Pull-request: https://github.com/SerenityOS/serenity/pull/21980
Reviewed-by: https://github.com/MacDue ✅
2 changed files with 12 additions and 12 deletions
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14
AK/Math.h
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@ -1026,17 +1026,17 @@ constexpr T pow(T x, T y)
return exp2<T>(y * log2<T>(x));
}
template<typename T>
constexpr int clamp_to_int(T value)
template<Integral I, typename T>
constexpr I clamp_to(T value)
{
if (value >= static_cast<T>(NumericLimits<int>::max()))
return NumericLimits<int>::max();
if (value >= static_cast<T>(NumericLimits<I>::max()))
return NumericLimits<I>::max();
if (value <= static_cast<T>(NumericLimits<int>::min()))
return NumericLimits<int>::min();
if (value <= static_cast<T>(NumericLimits<I>::min()))
return NumericLimits<I>::min();
if constexpr (IsFloatingPoint<T>)
return round_to<int>(value);
return round_to<I>(value);
return value;
}

10
Userland/Libraries/LibWeb/PixelUnits.h
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@ -88,7 +88,7 @@ public:
{
i32 raw_value = 0;
if (!isnan(value))
raw_value = AK::clamp_to_int(value * fixed_point_denominator);
raw_value = AK::clamp_to<int>(value * fixed_point_denominator);
// Note: The resolution of CSSPixels is 0.015625, so care must be taken when converting
// floats/doubles to CSSPixels as small values (such as scale factors) can underflow to zero,
// or otherwise produce inaccurate results (when scaled back up).
@ -181,7 +181,7 @@ public:
i64 value = raw_value();
value *= other.raw_value();
int int_value = AK::clamp_to_int(value >> fractional_bits);
int int_value = AK::clamp_to<int>(value >> fractional_bits);
// Rounding:
// If last bit cut off was 1:
@ -321,7 +321,7 @@ public:
i64 wide_value = m_numerator.raw_value();
wide_value <<= CSSPixels::fractional_bits;
wide_value = rounding_divide<i64>(wide_value, m_denominator.raw_value());
return CSSPixels::from_raw(AK::clamp_to_int(wide_value));
return CSSPixels::from_raw(AK::clamp_to<int>(wide_value));
}
constexpr CSSPixels operator-(CSSPixels const& other) const
@ -373,7 +373,7 @@ constexpr CSSPixels CSSPixels::operator*(CSSPixelFraction const& other) const
i64 wide_value = raw_value();
wide_value *= other.numerator().raw_value();
wide_value = rounding_divide<i64>(wide_value, other.denominator().raw_value());
return CSSPixels::from_raw(AK::clamp_to_int(wide_value));
return CSSPixels::from_raw(AK::clamp_to<int>(wide_value));
}
constexpr CSSPixelFraction CSSPixels::operator/(CSSPixels const& other) const
@ -385,7 +385,7 @@ constexpr CSSPixels CSSPixels::operator/(CSSPixelFraction const& other) const
i64 wide_value = raw_value();
wide_value *= other.denominator().raw_value();
wide_value = rounding_divide<i64>(wide_value, other.numerator().raw_value());
return CSSPixels::from_raw(AK::clamp_to_int(wide_value));
return CSSPixels::from_raw(AK::clamp_to<int>(wide_value));
}
template<Integral T>