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layout: Rewrite Servo's vertical-align support to match CSS 2.1 §

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10.8, and implement `vertical-align: middle` per CSS 2.1 § 10.8.1.

`InlineMetrics` has been split into `InlineMetrics` for fragments and
`LineMetrics` for lines. Both structures' fields have been renamed in
order to more clearly delineate the difference between *space* and
*content*. Vertical positioning of fragments has been reworked to take
margins and borders into account only for replaced content.

This patch fixes the `vertical_align_super_a.html` reftest. Servo now
matches the rendering that Gecko and WebKit produce.

Additionally, this includes a test for the popular inline-block
centering technique described here:
https://s.codepen.io/shshaw/fullpage/gEiDt?#Inline-Block
This commit is contained in:
Patrick Walton 2016-10-05 11:27:40 -07:00
parent 56b41fa2ea
commit 773614f84c
35 changed files with 522 additions and 389 deletions
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48
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -2528,6 +2528,18 @@
"url": "/_mozilla/css/inline_block_border_intrinsic_size_a.html"
}
],
"css/inline_block_centering_a.html": [
{
"path": "css/inline_block_centering_a.html",
"references": [
[
"/_mozilla/css/inline_block_centering_ref.html",
"=="
]
],
"url": "/_mozilla/css/inline_block_centering_a.html"
}
],
"css/inline_block_height_with_out_of_flow_child_a.html": [
{
"path": "css/inline_block_height_with_out_of_flow_child_a.html",
@ -5688,6 +5700,18 @@
"url": "/_mozilla/css/vertical_align_inside_table_a.html"
}
],
"css/vertical_align_middle_a.html": [
{
"path": "css/vertical_align_middle_a.html",
"references": [
[
"/_mozilla/css/vertical_align_middle_ref.html",
"=="
]
],
"url": "/_mozilla/css/vertical_align_middle_a.html"
}
],
"css/vertical_align_sub_a.html": [
{
"path": "css/vertical_align_sub_a.html",
@ -16286,6 +16310,18 @@
"url": "/_mozilla/css/inline_block_border_intrinsic_size_a.html"
}
],
"css/inline_block_centering_a.html": [
{
"path": "css/inline_block_centering_a.html",
"references": [
[
"/_mozilla/css/inline_block_centering_ref.html",
"=="
]
],
"url": "/_mozilla/css/inline_block_centering_a.html"
}
],
"css/inline_block_height_with_out_of_flow_child_a.html": [
{
"path": "css/inline_block_height_with_out_of_flow_child_a.html",
@ -19446,6 +19482,18 @@
"url": "/_mozilla/css/vertical_align_inside_table_a.html"
}
],
"css/vertical_align_middle_a.html": [
{
"path": "css/vertical_align_middle_a.html",
"references": [
[
"/_mozilla/css/vertical_align_middle_ref.html",
"=="
]
],
"url": "/_mozilla/css/vertical_align_middle_a.html"
}
],
"css/vertical_align_sub_a.html": [
{
"path": "css/vertical_align_sub_a.html",