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LibWeb: Start fleshing out support for relative CSS units

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This patch introduces support for more than just "absolute px" units in
our Length class. It now also supports "em" and "rem", which are units
relative to the font-size of the current layout node and the <html>
element's layout node respectively.
This commit is contained in:
Andreas Kling 2020-06-07 17:55:46 +02:00
parent d93bf78346
commit 731685468a
16 changed files with 163 additions and 92 deletions
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10
Libraries/LibWeb/Layout/BoxModelMetrics.cpp
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@ -36,13 +36,13 @@ BoxModelMetrics::~BoxModelMetrics()
{
}
BoxModelMetrics::PixelBox BoxModelMetrics::full_margin() const
BoxModelMetrics::PixelBox BoxModelMetrics::full_margin(const LayoutNode& layout_node) const
{
return {
m_margin.top.to_px() + m_border.top.to_px() + m_padding.top.to_px(),
m_margin.right.to_px() + m_border.right.to_px() + m_padding.right.to_px(),
m_margin.bottom.to_px() + m_border.bottom.to_px() + m_padding.bottom.to_px(),
m_margin.left.to_px() + m_border.left.to_px() + m_padding.left.to_px(),
m_margin.top.to_px(layout_node) + m_border.top.to_px(layout_node) + m_padding.top.to_px(layout_node),
m_margin.right.to_px(layout_node) + m_border.right.to_px(layout_node) + m_padding.right.to_px(layout_node),
m_margin.bottom.to_px(layout_node) + m_border.bottom.to_px(layout_node) + m_padding.bottom.to_px(layout_node),
m_margin.left.to_px(layout_node) + m_border.left.to_px(layout_node) + m_padding.left.to_px(layout_node),
};
}