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LibWeb: Support justify-content: space-evenly in flex layouts

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Aligns the cookie banner correctly on https://twitter.com/ :^)
This commit is contained in:
Andreas Kling 2023-07-05 17:43:48 +02:00
parent 4474aa0ae5
commit 1177308afb
7 changed files with 820 additions and 104 deletions
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24
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
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@ -1356,6 +1356,14 @@ void FlexFormattingContext::distribute_any_remaining_free_space()
initial_offset = space_between_items / 2.0;
}
break;
case CSS::JustifyContent::SpaceEvenly:
space_between_items = flex_line.remaining_free_space / (number_of_items + 1);
if (is_direction_reverse()) {
initial_offset = inner_main_size(flex_container()) - space_between_items;
} else {
initial_offset = space_between_items;
}
break;
}
}
@ -1593,6 +1601,21 @@ void FlexFormattingContext::align_all_flex_lines()
start_of_current_line = gap_size / 2;
break;
}
case CSS::AlignContent::SpaceEvenly: {
auto leftover_free_space = cross_size_of_flex_container - sum_of_flex_line_cross_sizes;
if (leftover_free_space < 0) {
// If the leftover free-space is negative this value is identical to center.
start_of_current_line = (cross_size_of_flex_container / 2) - (sum_of_flex_line_cross_sizes / 2);
break;
}
gap_size = leftover_free_space / (m_flex_lines.size() + 1);
// The spacing between the first/last lines and the flex container edges is the size of the spacing between flex lines.
start_of_current_line = gap_size;
break;
}
case CSS::AlignContent::Stretch:
start_of_current_line = 0;
break;
@ -2180,6 +2203,7 @@ CSSPixelPoint FlexFormattingContext::calculate_static_position(Box const& box) c
break;
case CSS::JustifyContent::Center:
case CSS::JustifyContent::SpaceAround:
case CSS::JustifyContent::SpaceEvenly:
pack_from_end = false;
main_offset = inner_main_size(flex_container()) / 2.0 - inner_main_size(box) / 2.0;
break;