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LibWeb: Use CSSPixelFraction to represent aspect ratios

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This allows us to retain perfect precision for aspect ratios derived
from either the intrinsic sizes of replaced elements, or the
`aspect-ratio` CSS property.
This commit is contained in:
Zaggy1024 2023-09-03 17:33:58 -05:00 • committed by Andreas Kling
commit 34c5043cbe
Notes: sideshowbarker 2024-07-16 20:31:50 +09:00
22 changed files with 57 additions and 55 deletions
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6
Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
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@ -140,16 +140,16 @@ Optional<CSSPixels> SVGDecodedImageData::intrinsic_height() const
return {};
}
Optional<float> SVGDecodedImageData::intrinsic_aspect_ratio() const
Optional<CSSPixelFraction> SVGDecodedImageData::intrinsic_aspect_ratio() const
{
// https://www.w3.org/TR/SVG2/coords.html#SizingSVGInCSS
auto width = intrinsic_width();
auto height = intrinsic_height();
if (width.has_value() && height.has_value())
return width->to_float() / height->to_float();
return *width / *height;
if (auto const& viewbox = m_root_element->view_box(); viewbox.has_value())
return viewbox->width / viewbox->height;
return CSSPixels::nearest_value_for(viewbox->width) / CSSPixels::nearest_value_for(viewbox->height);
return {};
}