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layout: Initial implementation of flex-direction: column and column-reverse (#33031)

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This change removes restrictions on using the column layout mode of
flexbox and adds an initial implementation of sizing for that flex
direction. There's a lot of missing pieces still, but in some cases this
does render column flexbox.

In particular, there are now two code paths for preferred widths
(intrinsic size) calcuation: one in the main axis (row) and one in
the cross axis (column) corresponding to the flex direciton with
horizontal writing modes.

In addition, `FlexItemBox::inline_content_sizes` is removed in favor of
making `sizing::outer_inline` /
`IndependentFormattingContext::outer_inline_content_sizes` generic
enough to handle using a different value for auto minimum sizes, which
flexbox needs.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Oriol Brufau <obrufau@igalia.com>
This commit is contained in:
Martin Robinson 2024-08-14 16:25:09 +02:00 • committed by GitHub
parent c059bab6f4
commit 7633bdccd2
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GPG key ID: B5690EEEBB952194
124 changed files with 541 additions and 605 deletions
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13
components/layout_2020/flow/mod.rs
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@ -366,7 +366,7 @@ fn calculate_inline_content_size_for_block_level_boxes(
BlockLevelBox::OutOfFlowFloatBox(ref mut float_box) => {
let size = float_box
.contents
.outer_inline_content_sizes(layout_context, writing_mode)
.outer_inline_content_sizes(layout_context, writing_mode, Au::zero)
.max(ContentSizes::zero());
let style_box = &float_box.contents.style().get_box();
Some((size, style_box.float, style_box.clear))
@ -374,9 +374,12 @@ fn calculate_inline_content_size_for_block_level_boxes(
BlockLevelBox::SameFormattingContextBlock {
style, contents, ..
} => {
let size = sizing::outer_inline(style, writing_mode, || {
contents.inline_content_sizes(layout_context, style.writing_mode)
})
let size = sizing::outer_inline(
style,
writing_mode,
|| contents.inline_content_sizes(layout_context, style.writing_mode),
Au::zero,
)
.max(ContentSizes::zero());
// A block in the same BFC can overlap floats, it's not moved next to them,
// so we shouldn't add its size to the size of the floats.
@ -385,7 +388,7 @@ fn calculate_inline_content_size_for_block_level_boxes(
},
BlockLevelBox::Independent(ref mut independent) => {
let size = independent
.outer_inline_content_sizes(layout_context, writing_mode)
.outer_inline_content_sizes(layout_context, writing_mode, Au::zero)
.max(ContentSizes::zero());
Some((size, Float::None, independent.style().get_box().clear))
},