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LibWeb: Note and fix Gfx related quirk in ColorStyleValue::to_string

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stelar7 2022-05-08 12:17:39 +02:00 • committed by Linus Groh
parent fa05c99b22
commit 4359d4eb5d
1 changed files with 4 additions and 1 deletions
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5
Userland/Libraries/LibWeb/CSS/StyleValue.cpp
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@ -1071,7 +1071,10 @@ CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberSumPartW
// https://www.w3.org/TR/css-color-4/#serializing-sRGB-values
String ColorStyleValue::to_string() const
{
if (m_color.alpha() == 1)
// The serialized form is derived from the computed value and thus, uses either the rgb() or rgba() form
// (depending on whether the alpha is exactly 1, or not), with lowercase letters for the function name.
// NOTE: Since we use Gfx::Color, having an "alpha of 1" means its value is 255.
if (m_color.alpha() == 255)
return String::formatted("rgb({}, {}, {})", m_color.red(), m_color.green(), m_color.blue());
return String::formatted("rgba({}, {}, {}, {})", m_color.red(), m_color.green(), m_color.blue(), (float)(m_color.alpha()) / 255.0f);
}