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LibWeb: Add propper rounding to PixelUnits::operator*

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Also moves related constants into the class to make them accessible for
tests.
This commit is contained in:
Hendiadyoin1 2023-07-26 15:02:03 +02:00 • committed by Alexander Kalenik
parent 4896ba11dc
commit f9fc0505fb
3 changed files with 36 additions and 6 deletions
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5
Userland/Libraries/LibWeb/PixelUnits.h
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@ -52,6 +52,11 @@ constexpr DevicePixels operator%(DevicePixels left, T right) { return left.value
/// See https://www.w3.org/TR/css-values-3/#reference-pixel
class CSSPixels {
public:
static constexpr i32 fractional_bits = 6;
static constexpr i32 fixed_point_denominator = 1 << fractional_bits;
static constexpr i32 radix_mask = fixed_point_denominator - 1;
CSSPixels() = default;
CSSPixels(int value);
CSSPixels(unsigned int value);