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LibWeb: Fully resolve min- and max-sizes for flex items

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We do this by piggybacking on FormattingContext helpers instead of
reinventing the wheel in FlexFormattingContext.

This fixes an issue where `min-width: fit-content` (and other
layout-dependent values) were treated as 0 on flex items.

This makes the cookie banners look okay on https://microsoft.com/ :^)
This commit is contained in:
Andreas Kling 2023-07-17 07:54:15 +02:00
parent 5d94bb4fcc
commit 8dd489da61
4 changed files with 102 additions and 75 deletions
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119
Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
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@ -27,33 +27,14 @@ template<typename T>
return ::max(min, ::min(value, max));
}
CSSPixels FlexFormattingContext::get_pixel_width(Box const& box, CSS::Size const& size) const
CSSPixels FlexFormattingContext::get_pixel_width(Box const& box, AvailableSpace const& available_space, CSS::Size const& size) const
{
auto containing_block_width = containing_block_width_for(box);
if (box.computed_values().box_sizing() == CSS::BoxSizing::BorderBox) {
auto border_left = box.computed_values().border_left().width;
auto border_right = box.computed_values().border_right().width;
auto padding_left = box.computed_values().padding().left().to_px(box, containing_block_width);
auto padding_right = box.computed_values().padding().right().to_px(box, containing_block_width);
return size.to_px(box, containing_block_width) - border_left - border_right - padding_left - padding_right;
}
return size.to_px(box, containing_block_width);
return calculate_inner_width(box, available_space.width, size).to_px(box);
}
CSSPixels FlexFormattingContext::get_pixel_height(Box const& box, CSS::Size const& size) const
CSSPixels FlexFormattingContext::get_pixel_height(Box const& box, AvailableSpace const& available_space, CSS::Size const& size) const
{
auto containing_block_height = containing_block_height_for(box);
if (box.computed_values().box_sizing() == CSS::BoxSizing::BorderBox) {
auto containing_block_width = containing_block_width_for(box);
auto border_top = box.computed_values().border_top().width;
auto border_bottom = box.computed_values().border_bottom().width;
auto padding_top = box.computed_values().padding().top().to_px(box, containing_block_width);
auto padding_bottom = box.computed_values().padding().bottom().to_px(box, containing_block_width);
return size.to_px(box, containing_block_height) - border_top - border_bottom - padding_top - padding_bottom;
}
return size.to_px(box, containing_block_height);
return calculate_inner_height(box, available_space.height, size).to_px(box);
}
FlexFormattingContext::FlexFormattingContext(LayoutState& state, Box const& flex_container, FormattingContext* parent)
@ -115,8 +96,8 @@ void FlexFormattingContext::run(Box const& run_box, LayoutMode, AvailableSpace c
for (auto& item : m_flex_items) {
if (!flex_item_is_stretched(item))
continue;
auto item_min_cross_size = has_cross_min_size(item.box) ? specified_cross_min_size(item.box) : 0;
auto item_max_cross_size = has_cross_max_size(item.box) ? specified_cross_max_size(item.box) : INFINITY;
auto item_min_cross_size = has_cross_min_size(item.box) ? specified_cross_min_size(item.box, m_available_space_for_items->space) : 0;
auto item_max_cross_size = has_cross_max_size(item.box) ? specified_cross_max_size(item.box, m_available_space_for_items->space) : INFINITY;
auto item_preferred_outer_cross_size = css_clamp(flex_container_inner_cross_size, item_min_cross_size, item_max_cross_size);
auto item_inner_cross_size = item_preferred_outer_cross_size - item.margins.cross_before - item.margins.cross_after - item.padding.cross_before - item.padding.cross_after - item.borders.cross_before - item.borders.cross_after;
set_cross_size(item.box, item_inner_cross_size);
@ -371,18 +352,18 @@ bool FlexFormattingContext::has_definite_cross_size(Box const& box) const
return is_row_layout() ? used_values.has_definite_height() : used_values.has_definite_width();
}
CSSPixels FlexFormattingContext::specified_main_min_size(Box const& box) const
CSSPixels FlexFormattingContext::specified_main_min_size(Box const& box, AvailableSpace const& available_space) const
{
return is_row_layout()
? get_pixel_width(box, box.computed_values().min_width())
: get_pixel_height(box, box.computed_values().min_height());
? get_pixel_width(box, available_space, box.computed_values().min_width())
: get_pixel_height(box, available_space, box.computed_values().min_height());
}
CSSPixels FlexFormattingContext::specified_cross_min_size(Box const& box) const
CSSPixels FlexFormattingContext::specified_cross_min_size(Box const& box, AvailableSpace const& available_space) const
{
return is_row_layout()
? get_pixel_height(box, box.computed_values().min_height())
: get_pixel_width(box, box.computed_values().min_width());
? get_pixel_height(box, available_space, box.computed_values().min_height())
: get_pixel_width(box, available_space, box.computed_values().min_width());
}
bool FlexFormattingContext::has_main_max_size(Box const& box) const
@ -397,18 +378,18 @@ bool FlexFormattingContext::has_cross_max_size(Box const& box) const
return !value.is_none();
}
CSSPixels FlexFormattingContext::specified_main_max_size(Box const& box) const
CSSPixels FlexFormattingContext::specified_main_max_size(Box const& box, AvailableSpace const& available_space) const
{
return is_row_layout()
? get_pixel_width(box, box.computed_values().max_width())
: get_pixel_height(box, box.computed_values().max_height());
? get_pixel_width(box, available_space, box.computed_values().max_width())
: get_pixel_height(box, available_space, box.computed_values().max_height());
}
CSSPixels FlexFormattingContext::specified_cross_max_size(Box const& box) const
CSSPixels FlexFormattingContext::specified_cross_max_size(Box const& box, AvailableSpace const& available_space) const
{
return is_row_layout()
? get_pixel_height(box, box.computed_values().max_height())
: get_pixel_width(box, box.computed_values().max_width());
? get_pixel_height(box, available_space, box.computed_values().max_height())
: get_pixel_width(box, available_space, box.computed_values().max_width());
}
bool FlexFormattingContext::is_cross_auto(Box const& box) const
@ -627,8 +608,8 @@ void FlexFormattingContext::determine_flex_base_size_and_hypothetical_main_size(
if (item.used_flex_basis_is_definite) {
auto const& size = item.used_flex_basis->get<CSS::Size>();
if (is_row_layout())
return get_pixel_width(child_box, size);
return get_pixel_height(child_box, size);
return get_pixel_width(child_box, m_available_space_for_items->space, size);
return get_pixel_height(child_box, m_available_space_for_items->space, size);
}
// B. If the flex item has ...
@ -706,8 +687,8 @@ void FlexFormattingContext::determine_flex_base_size_and_hypothetical_main_size(
}
// The hypothetical main size is the item’s flex base size clamped according to its used min and max main sizes (and flooring the content box size at zero).
auto clamp_min = has_main_min_size(child_box) ? specified_main_min_size(child_box) : automatic_minimum_size(item);
auto clamp_max = has_main_max_size(child_box) ? specified_main_max_size(child_box) : NumericLimits<float>::max();
auto clamp_min = has_main_min_size(child_box) ? specified_main_min_size(child_box, m_available_space_for_items->space) : automatic_minimum_size(item);
auto clamp_max = has_main_max_size(child_box) ? specified_main_max_size(child_box, m_available_space_for_items->space) : NumericLimits<float>::max();
item.hypothetical_main_size = max(CSSPixels(0), css_clamp(item.flex_base_size, clamp_min, clamp_max));
// NOTE: At this point, we set the hypothetical main size as the flex item's *temporary* main size.
@ -740,7 +721,7 @@ Optional<CSSPixels> FlexFormattingContext::specified_size_suggestion(FlexItem co
// then the specified size suggestion is that size. It is otherwise undefined.
if (has_definite_main_size(item.box) && !should_treat_main_size_as_auto(item.box)) {
// NOTE: We use get_pixel_{width,height} to ensure that CSS box-sizing is respected.
return is_row_layout() ? get_pixel_width(item.box, computed_main_size(item.box)) : get_pixel_height(item.box, computed_main_size(item.box));
return is_row_layout() ? get_pixel_width(item.box, m_available_space_for_items->space, computed_main_size(item.box)) : get_pixel_height(item.box, m_available_space_for_items->space, computed_main_size(item.box));
}
return {};
}
@ -800,7 +781,7 @@ CSSPixels FlexFormattingContext::content_based_minimum_size(FlexItem const& item
// In all cases, the size is clamped by the maximum main size if it’s definite.
if (has_main_max_size(item.box)) {
return min(unclamped_size, specified_main_max_size(item.box));
return min(unclamped_size, specified_main_max_size(item.box, m_available_space_for_items->space));
}
return unclamped_size;
}
@ -1055,11 +1036,11 @@ void FlexFormattingContext::resolve_flexible_lengths_for_line(FlexLine& line)
if (item.frozen)
continue;
auto used_min_main_size = has_main_min_size(item.box)
? specified_main_min_size(item.box)
? specified_main_min_size(item.box, m_available_space_for_items->space)
: automatic_minimum_size(item);
auto used_max_main_size = has_main_max_size(item.box)
? specified_main_max_size(item.box)
? specified_main_max_size(item.box, m_available_space_for_items->space)
: NumericLimits<float>::max();
auto original_target_main_size = item.target_main_size;
@ -1143,8 +1124,8 @@ void FlexFormattingContext::determine_hypothetical_cross_size_of_item(FlexItem&
auto const& computed_min_size = this->computed_cross_min_size(item.box);
auto const& computed_max_size = this->computed_cross_max_size(item.box);
auto clamp_min = (!computed_min_size.is_auto() && (resolve_percentage_min_max_sizes || !computed_min_size.contains_percentage())) ? specified_cross_min_size(item.box) : 0;
auto clamp_max = (!computed_max_size.is_none() && (resolve_percentage_min_max_sizes || !computed_max_size.contains_percentage())) ? specified_cross_max_size(item.box) : NumericLimits<float>::max();
auto clamp_min = (!computed_min_size.is_auto() && (resolve_percentage_min_max_sizes || !computed_min_size.contains_percentage())) ? specified_cross_min_size(item.box, m_available_space_for_items->space) : 0;
auto clamp_max = (!computed_max_size.is_none() && (resolve_percentage_min_max_sizes || !computed_max_size.contains_percentage())) ? specified_cross_max_size(item.box, m_available_space_for_items->space) : NumericLimits<float>::max();
// If we have a definite cross size, this is easy! No need to perform layout, we can just use it as-is.
if (has_definite_cross_size(item.box)) {
@ -1237,8 +1218,8 @@ void FlexFormattingContext::calculate_cross_size_of_each_flex_line()
if (is_single_line()) {
auto const& computed_min_size = this->computed_cross_min_size(flex_container());
auto const& computed_max_size = this->computed_cross_max_size(flex_container());
auto cross_min_size = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_cross_min_size(flex_container()) : 0;
auto cross_max_size = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_cross_max_size(flex_container()) : INFINITY;
auto cross_min_size = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_cross_min_size(flex_container(), m_available_space_for_flex_container->space) : 0;
auto cross_max_size = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_cross_max_size(flex_container(), m_available_space_for_flex_container->space) : INFINITY;
m_flex_lines[0].cross_size = css_clamp(m_flex_lines[0].cross_size, cross_min_size, cross_max_size);
}
}
@ -1262,8 +1243,8 @@ void FlexFormattingContext::determine_used_cross_size_of_each_flex_item()
auto const& computed_min_size = computed_cross_min_size(item.box);
auto const& computed_max_size = computed_cross_max_size(item.box);
auto cross_min_size = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_cross_min_size(item.box) : 0;
auto cross_max_size = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_cross_max_size(item.box) : INFINITY;
auto cross_min_size = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_cross_min_size(item.box, m_available_space_for_items->space) : 0;
auto cross_max_size = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_cross_max_size(item.box, m_available_space_for_items->space) : INFINITY;
item.cross_size = css_clamp(unclamped_cross_size, cross_min_size, cross_max_size);
} else {
@ -1538,8 +1519,8 @@ void FlexFormattingContext::determine_flex_container_used_cross_size()
}
auto const& computed_min_size = this->computed_cross_min_size(flex_container());
auto const& computed_max_size = this->computed_cross_max_size(flex_container());
auto cross_min_size = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_cross_min_size(flex_container()) : 0;
auto cross_max_size = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_cross_max_size(flex_container()) : INFINITY;
auto cross_min_size = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_cross_min_size(flex_container(), m_available_space_for_flex_container->space) : 0;
auto cross_max_size = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_cross_max_size(flex_container(), m_available_space_for_flex_container->space) : INFINITY;
set_cross_size(flex_container(), css_clamp(cross_size, cross_min_size, cross_max_size));
}
@ -1781,8 +1762,8 @@ CSSPixels FlexFormattingContext::calculate_intrinsic_main_size_of_flex_container
auto const& computed_min_size = this->computed_main_min_size(item.box);
auto const& computed_max_size = this->computed_main_max_size(item.box);
auto clamp_min = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_main_min_size(item.box) : automatic_minimum_size(item);
auto clamp_max = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_main_max_size(item.box) : NumericLimits<float>::max();
auto clamp_min = (!computed_min_size.is_auto() && !computed_min_size.contains_percentage()) ? specified_main_min_size(item.box, m_available_space_for_items->space) : automatic_minimum_size(item);
auto clamp_max = (!computed_max_size.is_none() && !computed_max_size.contains_percentage()) ? specified_main_max_size(item.box, m_available_space_for_items->space) : NumericLimits<float>::max();
result = css_clamp(result, clamp_min, clamp_max);
@ -1884,12 +1865,12 @@ CSSPixels FlexFormattingContext::calculate_main_min_content_contribution(FlexIte
auto inner_min_content_size = calculate_min_content_main_size(item);
if (computed_main_size(item.box).is_auto())
return inner_min_content_size;
auto inner_preferred_size = is_row_layout() ? get_pixel_width(item.box, computed_main_size(item.box)) : get_pixel_height(item.box, computed_main_size(item.box));
auto inner_preferred_size = is_row_layout() ? get_pixel_width(item.box, m_available_space_for_items->space, computed_main_size(item.box)) : get_pixel_height(item.box, m_available_space_for_items->space, computed_main_size(item.box));
return max(inner_min_content_size, inner_preferred_size);
}();
auto clamp_min = has_main_min_size(item.box) ? specified_main_min_size(item.box) : automatic_minimum_size(item);
auto clamp_max = has_main_max_size(item.box) ? specified_main_max_size(item.box) : NumericLimits<float>::max();
auto clamp_min = has_main_min_size(item.box) ? specified_main_min_size(item.box, m_available_space_for_items->space) : automatic_minimum_size(item);
auto clamp_max = has_main_max_size(item.box) ? specified_main_max_size(item.box, m_available_space_for_items->space) : NumericLimits<float>::max();
auto clamped_inner_size = css_clamp(larger_size, clamp_min, clamp_max);
return item.add_main_margin_box_sizes(clamped_inner_size);
@ -1905,12 +1886,12 @@ CSSPixels FlexFormattingContext::calculate_main_max_content_contribution(FlexIte
auto inner_max_content_size = calculate_max_content_main_size(item);
if (computed_main_size(item.box).is_auto())
return inner_max_content_size;
auto inner_preferred_size = is_row_layout() ? get_pixel_width(item.box, computed_main_size(item.box)) : get_pixel_height(item.box, computed_main_size(item.box));
auto inner_preferred_size = is_row_layout() ? get_pixel_width(item.box, m_available_space_for_items->space, computed_main_size(item.box)) : get_pixel_height(item.box, m_available_space_for_items->space, computed_main_size(item.box));
return max(inner_max_content_size, inner_preferred_size);
}();
auto clamp_min = has_main_min_size(item.box) ? specified_main_min_size(item.box) : automatic_minimum_size(item);
auto clamp_max = has_main_max_size(item.box) ? specified_main_max_size(item.box) : NumericLimits<float>::max();
auto clamp_min = has_main_min_size(item.box) ? specified_main_min_size(item.box, m_available_space_for_items->space) : automatic_minimum_size(item);
auto clamp_max = has_main_max_size(item.box) ? specified_main_max_size(item.box, m_available_space_for_items->space) : NumericLimits<float>::max();
auto clamped_inner_size = css_clamp(larger_size, clamp_min, clamp_max);
return item.add_main_margin_box_sizes(clamped_inner_size);
@ -1935,14 +1916,14 @@ CSSPixels FlexFormattingContext::calculate_cross_min_content_contribution(FlexIt
auto size = [&] {
if (should_treat_cross_size_as_auto(item.box))
return calculate_min_content_cross_size(item);
return !is_row_layout() ? get_pixel_width(item.box, computed_cross_size(item.box)) : get_pixel_height(item.box, computed_cross_size(item.box));
return !is_row_layout() ? get_pixel_width(item.box, m_available_space_for_items->space, computed_cross_size(item.box)) : get_pixel_height(item.box, m_available_space_for_items->space, computed_cross_size(item.box));
}();
auto const& computed_min_size = this->computed_cross_min_size(item.box);
auto const& computed_max_size = this->computed_cross_max_size(item.box);
auto clamp_min = (!computed_min_size.is_auto() && (resolve_percentage_min_max_sizes || !computed_min_size.contains_percentage())) ? specified_cross_min_size(item.box) : 0;
auto clamp_max = (!computed_max_size.is_none() && (resolve_percentage_min_max_sizes || !computed_max_size.contains_percentage())) ? specified_cross_max_size(item.box) : NumericLimits<float>::max();
auto clamp_min = (!computed_min_size.is_auto() && (resolve_percentage_min_max_sizes || !computed_min_size.contains_percentage())) ? specified_cross_min_size(item.box, m_available_space_for_items->space) : 0;
auto clamp_max = (!computed_max_size.is_none() && (resolve_percentage_min_max_sizes || !computed_max_size.contains_percentage())) ? specified_cross_max_size(item.box, m_available_space_for_items->space) : NumericLimits<float>::max();
auto clamped_inner_size = css_clamp(size, clamp_min, clamp_max);
@ -1954,14 +1935,14 @@ CSSPixels FlexFormattingContext::calculate_cross_max_content_contribution(FlexIt
auto size = [&] {
if (should_treat_cross_size_as_auto(item.box))
return calculate_max_content_cross_size(item);
return !is_row_layout() ? get_pixel_width(item.box, computed_cross_size(item.box)) : get_pixel_height(item.box, computed_cross_size(item.box));
return !is_row_layout() ? get_pixel_width(item.box, m_available_space_for_items->space, computed_cross_size(item.box)) : get_pixel_height(item.box, m_available_space_for_items->space, computed_cross_size(item.box));
}();
auto const& computed_min_size = this->computed_cross_min_size(item.box);
auto const& computed_max_size = this->computed_cross_max_size(item.box);
auto clamp_min = (!computed_min_size.is_auto() && (resolve_percentage_min_max_sizes || !computed_min_size.contains_percentage())) ? specified_cross_min_size(item.box) : 0;
auto clamp_max = (!computed_max_size.is_none() && (resolve_percentage_min_max_sizes || !computed_max_size.contains_percentage())) ? specified_cross_max_size(item.box) : NumericLimits<float>::max();
auto clamp_min = (!computed_min_size.is_auto() && (resolve_percentage_min_max_sizes || !computed_min_size.contains_percentage())) ? specified_cross_min_size(item.box, m_available_space_for_items->space) : 0;
auto clamp_max = (!computed_max_size.is_none() && (resolve_percentage_min_max_sizes || !computed_max_size.contains_percentage())) ? specified_cross_max_size(item.box, m_available_space_for_items->space) : NumericLimits<float>::max();
auto clamped_inner_size = css_clamp(size, clamp_min, clamp_max);
@ -1972,8 +1953,8 @@ CSSPixels FlexFormattingContext::calculate_clamped_fit_content_width(Box const&
{
auto const& computed_min_size = box.computed_values().min_width();
auto const& computed_max_size = box.computed_values().max_width();
auto clamp_min = (!computed_min_size.is_auto() && (!computed_min_size.contains_percentage())) ? specified_cross_min_size(box) : 0;
auto clamp_max = (!computed_max_size.is_none() && (!computed_max_size.contains_percentage())) ? specified_cross_max_size(box) : NumericLimits<float>::max();
auto clamp_min = (!computed_min_size.is_auto() && (!computed_min_size.contains_percentage())) ? specified_cross_min_size(box, m_available_space_for_items->space) : 0;
auto clamp_max = (!computed_max_size.is_none() && (!computed_max_size.contains_percentage())) ? specified_cross_max_size(box, m_available_space_for_items->space) : NumericLimits<float>::max();
auto size = FormattingContext::calculate_fit_content_width(box, available_space);
return css_clamp(size, clamp_min, clamp_max);
}