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LibWeb: Remove rounding division for CSSPixels

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Reverts 98926b487c
that regressed: block-and-inline/small-percentage-margin.html
(thrashing layout while window resizing)

Fixes https://github.com/SerenityOS/serenity/issues/22610
This commit is contained in:
Aliaksandr Kalenik 2024-01-06 06:08:23 +01:00 • committed by Andreas Kling
parent 7db8b206a8
commit e7eaf3b566
32 changed files with 257 additions and 245 deletions
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14
Userland/Libraries/LibWeb/PixelUnits.h
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@ -288,14 +288,6 @@ constexpr CSSPixels operator*(T left, CSSPixels right) { return CSSPixels(left)
inline float operator*(float left, CSSPixels right) { return right.to_float() * left; }
inline double operator*(double left, CSSPixels right) { return right.to_double() * left; }
template<Integral T>
constexpr static T rounding_divide(T dividend, T divisor)
{
if ((dividend < 0) == (divisor < 0))
return (dividend + (divisor / 2)) / divisor;
return (dividend - (divisor / 2)) / divisor;
}
class CSSPixelFraction {
public:
constexpr CSSPixelFraction(CSSPixels numerator, CSSPixels denominator)
@ -321,7 +313,7 @@ public:
{
i64 wide_value = m_numerator.raw_value();
wide_value <<= CSSPixels::fractional_bits;
wide_value = rounding_divide<i64>(wide_value, m_denominator.raw_value());
wide_value /= m_denominator.raw_value();
return CSSPixels::from_raw(AK::clamp_to<int>(wide_value));
}
@ -373,7 +365,7 @@ 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());
wide_value /= other.denominator().raw_value();
return CSSPixels::from_raw(AK::clamp_to<int>(wide_value));
}
@ -385,7 +377,7 @@ 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());
wide_value /= other.numerator().raw_value();
return CSSPixels::from_raw(AK::clamp_to<int>(wide_value));
}