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Implement the box-sizing property

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This commit is contained in:
Simon Sapin 2020-03-31 20:55:07 +02:00
parent 0e35d70ca8
commit c377d9c48e
7 changed files with 168 additions and 94 deletions
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42
components/layout_2020/flow/inline.rs
View file

@ -529,10 +529,8 @@ fn layout_atomic(
atomic: &IndependentFormattingContext,
) {
let pbm = atomic.style.padding_border_margin(&ifc.containing_block);
let padding = pbm.padding;
let border = pbm.border;
let margin = pbm.margin.auto_is(Length::zero);
let pbm_sums = &(&padding + &border) + &margin;
let pbm_sums = &(&pbm.padding + &pbm.border) + &margin;
ifc.inline_position += pbm_sums.inline_start;
let mut start_corner = Vec2 {
block: pbm_sums.block_start,
@ -544,7 +542,8 @@ fn layout_atomic(
let fragment = match atomic.as_replaced() {
Ok(replaced) => {
let size = replaced.used_size_as_if_inline_element(ifc.containing_block, &atomic.style);
let size =
replaced.used_size_as_if_inline_element(ifc.containing_block, &atomic.style, &pbm);
let fragments = replaced.make_fragments(&atomic.style, size.clone());
let content_rect = Rect { start_corner, size };
BoxFragment::new(
@ -552,31 +551,27 @@ fn layout_atomic(
atomic.style.clone(),
fragments,
content_rect,
padding,
border,
pbm.padding,
pbm.border,
margin,
CollapsedBlockMargins::zero(),
)
},
Err(non_replaced) => {
let box_size = atomic.style.box_size();
let box_size = atomic.style.content_box_size(&ifc.containing_block, &pbm);
let max_box_size = atomic
.style
.max_box_size()
.percentages_relative_to(ifc.containing_block);
.content_max_box_size(&ifc.containing_block, &pbm);
let min_box_size = atomic
.style
.min_box_size()
.percentages_relative_to(ifc.containing_block)
.content_min_box_size(&ifc.containing_block, &pbm)
.auto_is(Length::zero);
// https://drafts.csswg.org/css2/visudet.html#inlineblock-width
let cbis = ifc.containing_block.inline_size;
let tentative_inline_size =
box_size.inline.percentage_relative_to(cbis).auto_is(|| {
let available_size = cbis - pbm_sums.inline_sum();
atomic.content_sizes.shrink_to_fit(available_size)
});
let tentative_inline_size = box_size.inline.auto_is(|| {
let available_size = ifc.containing_block.inline_size - pbm_sums.inline_sum();
atomic.content_sizes.shrink_to_fit(available_size)
});
// https://drafts.csswg.org/css2/visudet.html#min-max-widths
// In this case “applying the rules above again” with a non-auto inline-size
@ -584,12 +579,9 @@ fn layout_atomic(
let inline_size = tentative_inline_size
.clamp_between_extremums(min_box_size.inline, max_box_size.inline);
let block_size = box_size
.block
.maybe_percentage_relative_to(ifc.containing_block.block_size.non_auto());
let containing_block_for_children = ContainingBlock {
inline_size,
block_size,
block_size: box_size.block,
style: &atomic.style,
};
assert_eq!(
@ -608,7 +600,9 @@ fn layout_atomic(
);
// https://drafts.csswg.org/css2/visudet.html#block-root-margin
let tentative_block_size = block_size.auto_is(|| independent_layout.content_block_size);
let tentative_block_size = box_size
.block
.auto_is(|| independent_layout.content_block_size);
// https://drafts.csswg.org/css2/visudet.html#min-max-heights
// In this case “applying the rules above again” with a non-auto block-size
@ -628,8 +622,8 @@ fn layout_atomic(
atomic.style.clone(),
independent_layout.fragments,
content_rect,
padding,
border,
pbm.padding,
pbm.border,
margin,
CollapsedBlockMargins::zero(),
)

12
components/layout_2020/flow/mod.rs
View file

@ -351,14 +351,10 @@ fn layout_in_flow_non_replaced_block_level(
float_context: Option<&mut FloatContext>,
) -> BoxFragment {
let pbm = style.padding_border_margin(containing_block);
let box_size = style.box_size().percentages_relative_to(containing_block);
let max_box_size = style
.max_box_size()
.percentages_relative_to(containing_block);
let box_size = style.content_box_size(containing_block, &pbm);
let max_box_size = style.content_max_box_size(containing_block, &pbm);
let min_box_size = style
.min_box_size()
.percentages_relative_to(containing_block)
.content_min_box_size(containing_block, &pbm)
.auto_is(Length::zero);
// https://drafts.csswg.org/css2/visudet.html#min-max-widths
@ -508,7 +504,7 @@ fn layout_in_flow_replaced_block_level<'a>(
replaced: &ReplacedContent,
) -> BoxFragment {
let pbm = style.padding_border_margin(containing_block);
let size = replaced.used_size_as_if_inline_element(containing_block, style);
let size = replaced.used_size_as_if_inline_element(containing_block, style, &pbm);
let (margin_inline_start, margin_inline_end) =
solve_inline_margins_for_in_flow_block_level(containing_block, &pbm, size.inline);