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LibWeb: Wrap font metrics into a struct

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Rather than passing an increasingly-unwieldy number of font parameters
individually to every function that resolves lengths, let's wrap them
up.

This is frustratingly close to being `Gfx::FontPixelMetrics`, but bitmap
fonts cause issues: We choose the closest font to what the CSS
requests, but that might have a wildly different size than what the
page expects, so we have to fudge the numbers.

No behaviour changes.
This commit is contained in:
Sam Atkins 2023-04-28 16:29:12 +01:00 • committed by Andreas Kling
parent 4a191875a9
commit 0679b4e0b9
14 changed files with 107 additions and 62 deletions
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6
Userland/Libraries/LibWeb/CSS/StyleValues/BorderRadiusStyleValue.cpp
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@ -18,16 +18,16 @@ ErrorOr<String> BorderRadiusStyleValue::to_string() const
return String::formatted("{} / {}", TRY(m_properties.horizontal_radius.to_string()), TRY(m_properties.vertical_radius.to_string()));
}
ValueComparingNonnullRefPtr<StyleValue const> BorderRadiusStyleValue::absolutized(CSSPixelRect const& viewport_rect, Gfx::FontPixelMetrics const& font_metrics, CSSPixels font_size, CSSPixels root_font_size, CSSPixels line_height, CSSPixels root_line_height) const
ValueComparingNonnullRefPtr<StyleValue const> BorderRadiusStyleValue::absolutized(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const
{
if (m_properties.horizontal_radius.is_percentage() && m_properties.vertical_radius.is_percentage())
return *this;
auto absolutized_horizontal_radius = m_properties.horizontal_radius;
auto absolutized_vertical_radius = m_properties.vertical_radius;
if (!m_properties.horizontal_radius.is_percentage())
absolutized_horizontal_radius = m_properties.horizontal_radius.length().absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
absolutized_horizontal_radius = m_properties.horizontal_radius.length().absolutized(viewport_rect, font_metrics, root_font_metrics);
if (!m_properties.vertical_radius.is_percentage())
absolutized_vertical_radius = m_properties.vertical_radius.length().absolutized(viewport_rect, font_metrics, font_size, root_font_size, line_height, root_line_height);
absolutized_vertical_radius = m_properties.vertical_radius.length().absolutized(viewport_rect, font_metrics, root_font_metrics);
return BorderRadiusStyleValue::create(absolutized_horizontal_radius, absolutized_vertical_radius);
}