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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
parent 4fb209d25f
commit 34c5043cbe
22 changed files with 57 additions and 55 deletions
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6
Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
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@ -404,7 +404,7 @@ CSSPixels FormattingContext::tentative_width_for_replaced_element(Box const& box
// (used height) * (intrinsic ratio)
if ((computed_height.is_auto() && computed_width.is_auto() && !box.has_natural_width() && box.has_natural_height() && box.has_preferred_aspect_ratio())
|| (computed_width.is_auto() && !computed_height.is_auto() && box.has_preferred_aspect_ratio())) {
return compute_height_for_replaced_element(box, available_space).scaled(static_cast<double>(box.preferred_aspect_ratio().value()));
return compute_height_for_replaced_element(box, available_space) * box.preferred_aspect_ratio().value();
}
// If 'height' and 'width' both have computed values of 'auto' and the element has an intrinsic ratio but no intrinsic height or width,
@ -498,7 +498,7 @@ CSSPixels FormattingContext::tentative_height_for_replaced_element(Box const& bo
//
// (used width) / (intrinsic ratio)
if (computed_height.is_auto() && box.has_preferred_aspect_ratio())
return CSSPixels::nearest_value_for(m_state.get(box).content_width() / static_cast<double>(box.preferred_aspect_ratio().value()));
return m_state.get(box).content_width() / box.preferred_aspect_ratio().value();
// Otherwise, if 'height' has a computed value of 'auto', and the element has an intrinsic height, then that intrinsic height is the used value of 'height'.
if (computed_height.is_auto() && box.has_natural_height())
@ -1407,7 +1407,7 @@ CSSPixels FormattingContext::calculate_min_content_height(Layout::Box const& box
CSSPixels FormattingContext::calculate_max_content_height(Layout::Box const& box, CSSPixels width) const
{
if (box.has_preferred_aspect_ratio())
return CSSPixels::nearest_value_for(width / static_cast<double>(*box.preferred_aspect_ratio()));
return width / *box.preferred_aspect_ratio();
if (box.has_natural_height())
return *box.natural_height();