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LibWeb: Put available space information in an FFC member

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This makes it easier for each step of the flex layout algorithm to
access this information.
This commit is contained in:
Andreas Kling 2022-02-27 12:19:58 +01:00
parent 88302b0dca
commit b904bff838
2 changed files with 14 additions and 14 deletions
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16
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
View file

@ -97,9 +97,7 @@ void FlexFormattingContext::run(Box const& run_box, LayoutMode)
bool main_is_constrained = false;
bool cross_is_constrained = false;
bool main_size_is_infinite = false;
auto available_space = determine_available_main_and_cross_space(main_size_is_infinite, main_is_constrained, cross_is_constrained, main_min_size, main_max_size, cross_min_size, cross_max_size);
auto main_available_size = available_space.main;
[[maybe_unused]] auto cross_available_size = available_space.cross;
determine_available_main_and_cross_space(main_size_is_infinite, main_is_constrained, cross_is_constrained, main_min_size, main_max_size, cross_min_size, cross_max_size);
// 3. Determine the flex base size and hypothetical main size of each item
for (auto& flex_item : m_flex_items) {
@ -107,14 +105,14 @@ void FlexFormattingContext::run(Box const& run_box, LayoutMode)
}
// 4. Determine the main size of the flex container
determine_main_size_of_flex_container(main_is_constrained, main_size_is_infinite, main_available_size, main_min_size, main_max_size);
determine_main_size_of_flex_container(main_is_constrained, main_size_is_infinite, m_available_space->main, main_min_size, main_max_size);
// 5. Collect flex items into flex lines:
// After this step no additional items are to be added to flex_lines or any of its items!
collect_flex_items_into_flex_lines(main_available_size);
collect_flex_items_into_flex_lines(m_available_space->main);
// 6. Resolve the flexible lengths
resolve_flexible_lengths(main_available_size);
resolve_flexible_lengths(m_available_space->main);
// Cross Size Determination
// 7. Determine the hypothetical cross size of each item
@ -135,7 +133,7 @@ void FlexFormattingContext::run(Box const& run_box, LayoutMode)
determine_used_cross_size_of_each_flex_item();
// 12. Distribute any remaining free space.
distribute_any_remaining_free_space(main_available_size);
distribute_any_remaining_free_space(m_available_space->main);
// 13. Resolve cross-axis auto margins.
// FIXME: This
@ -406,7 +404,7 @@ float FlexFormattingContext::sum_of_margin_padding_border_in_main_axis(Box const
}
// https://www.w3.org/TR/css-flexbox-1/#algo-available
FlexFormattingContext::AvailableSpace FlexFormattingContext::determine_available_main_and_cross_space(bool& main_size_is_infinite, bool& main_is_constrained, bool& cross_is_constrained, float& main_min_size, float& main_max_size, float& cross_min_size, float& cross_max_size) const
void FlexFormattingContext::determine_available_main_and_cross_space(bool& main_size_is_infinite, bool& main_is_constrained, bool& cross_is_constrained, float& main_min_size, float& main_max_size, float& cross_min_size, float& cross_max_size)
{
auto containing_block_effective_main_size = [&](Box const& box) {
auto& containing_block = *box.containing_block();
@ -475,7 +473,7 @@ FlexFormattingContext::AvailableSpace FlexFormattingContext::determine_available
cross_available_space = cross_max_size;
}
return AvailableSpace { .main = main_available_space, .cross = cross_available_space };
m_available_space = AvailableSpace { .main = main_available_space, .cross = cross_available_space };
}
float FlexFormattingContext::layout_for_maximum_main_size(Box const& box)

12
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.h
View file

@ -85,11 +85,7 @@ private:
void generate_anonymous_flex_items();
struct AvailableSpace {
float main { 0 };
float cross { 0 };
};
AvailableSpace determine_available_main_and_cross_space(bool& main_size_is_infinite, bool& main_is_constrained, bool& cross_is_constrained, float& main_min_size, float& main_max_size, float& cross_min_size, float& cross_max_size) const;
void determine_available_main_and_cross_space(bool& main_size_is_infinite, bool& main_is_constrained, bool& cross_is_constrained, float& main_min_size, float& main_max_size, float& cross_min_size, float& cross_max_size);
float layout_for_maximum_main_size(Box const&);
void determine_flex_base_size_and_hypothetical_main_size(FlexItem&);
@ -124,6 +120,12 @@ private:
Vector<FlexLine> m_flex_lines;
Vector<FlexItem> m_flex_items;
CSS::FlexDirection m_flex_direction {};
struct AvailableSpace {
float main { 0 };
float cross { 0 };
};
Optional<AvailableSpace> m_available_space;
};
}