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LibWeb: Resolve flex item auto cross sizes through aspect ratio

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Makes the bird logo show up on https://twitter.com/ :^)
This commit is contained in:
Andreas Kling 2023-07-05 17:30:48 +02:00
parent d6a3a50ec9
commit 4474aa0ae5
4 changed files with 32 additions and 0 deletions
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12
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
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@ -563,6 +563,13 @@ CSSPixels FlexFormattingContext::calculate_main_size_from_cross_size_and_aspect_
return cross_size / aspect_ratio;
}
CSSPixels FlexFormattingContext::calculate_cross_size_from_main_size_and_aspect_ratio(CSSPixels main_size, double aspect_ratio) const
{
if (is_row_layout())
return main_size / aspect_ratio;
return main_size * aspect_ratio;
}
// This function takes a size in the main axis and adjusts it according to the aspect ratio of the box
// if the min/max constraints in the cross axis forces us to come up with a new main axis size.
CSSPixels FlexFormattingContext::adjust_main_size_through_aspect_ratio_for_cross_size_min_max_constraints(Box const& box, CSSPixels main_size, CSS::Size const& min_cross_size, CSS::Size const& max_cross_size) const
@ -1150,6 +1157,11 @@ void FlexFormattingContext::determine_hypothetical_cross_size_of_item(FlexItem&
if (should_treat_cross_size_as_auto(item.box)) {
// Item has automatic cross size, layout with "fit-content"
if (item.box->has_preferred_aspect_ratio() && item.main_size.has_value()) {
item.hypothetical_cross_size = calculate_cross_size_from_main_size_and_aspect_ratio(item.main_size.value(), item.box->preferred_aspect_ratio().value());
return;
}
CSSPixels fit_content_cross_size = 0;
if (is_row_layout()) {
auto available_width = item.main_size.has_value() ? AvailableSize::make_definite(item.main_size.value()) : AvailableSize::make_indefinite();