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LibWeb: Fix broken conversion of CSS <resolution> dpi/dpcm to dppx

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Also add a basic test that documents how these media features currently
get serialized, even if they're not identical to other browsers yet.
This commit is contained in:
Andreas Kling
2023-08-25 17:58:40 +02:00
parent b256e52586
commit b63e393cef
3 changed files with 33 additions and 2 deletions
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4
Userland/Libraries/LibWeb/CSS/Resolution.cpp
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@@ -23,9 +23,9 @@ double Resolution::to_dots_per_pixel() const
{
switch (m_type) {
case Type::Dpi:
return m_value * 96; // 1in = 2.54cm = 96px
return m_value / 96; // 1in = 2.54cm = 96px
case Type::Dpcm:
return m_value * (96.0 / 2.54); // 1cm = 96px/2.54
return m_value / (96.0 / 2.54); // 1cm = 96px/2.54
case Type::Dppx:
return m_value;
}