layout: Linebreak the entire InlineFormattingContext at once (#32483)

Instead of linebreaking inside each single-font text segment, linebreak the entire inline formatting context at once. This has several benefits: 1. It allows us to use `icu_segmenter` (already in use from style), which is written against a newer version of the Unicode spec -- preventing breaking emoji clusters. 2. Opens up the possibility of changing the way that linebreaking and shaping work -- eventually allowing shaping across inline box boundaries and line breaking *after* shaping. Co-authored-by: Rakhi Sharma <atbrakhi@igalia.com>
2025-08-06 22:15:33 +01:00 · 2024-06-13 22:12:14 +02:00 · 2024-06-13 22:12:14 +02:00 · bae9f6d844
commit bae9f6d844
parent 43a7dd5da0
50 changed files with 356 additions and 220 deletions
--- a/tests/wpt/meta/css/css-text/line-break/line-break-anywhere-overrides-uax-behavior-015.html.ini
+++ b/tests/wpt/meta/css/css-text/line-break/line-break-anywhere-overrides-uax-behavior-015.html.ini
@ -0,0 +1,2 @@
+[line-break-anywhere-overrides-uax-behavior-015.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-break/line-break-normal-015b.xht.ini
+++ b/tests/wpt/meta/css/css-text/line-break/line-break-normal-015b.xht.ini
@ -1,2 +0,0 @@
-[line-break-normal-015b.xht]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-break/line-break-strict-015b.xht.ini
+++ b/tests/wpt/meta/css/css-text/line-break/line-break-strict-015b.xht.ini
@ -1,2 +0,0 @@
-[line-break-strict-015b.xht]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-013.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-013.html.ini
@ -1,2 +0,0 @@
-[line-breaking-013.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-014.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-014.html.ini
@ -1,2 +0,0 @@
-[line-breaking-014.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-021.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-021.html.ini
@ -1,2 +0,0 @@
-[line-breaking-021.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-024.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-024.html.ini
@ -1,2 +0,0 @@
-[line-breaking-024.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-025.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-025.html.ini
@ -1,2 +0,0 @@
-[line-breaking-025.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-026.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-026.html.ini
@ -1,2 +0,0 @@
-[line-breaking-026.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-027.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-027.html.ini
@ -1,2 +0,0 @@
-[line-breaking-027.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-atomic-010.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-atomic-010.html.ini
@ -1,2 +0,0 @@
-[line-breaking-atomic-010.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/line-breaking/line-breaking-atomic-011.html.ini
+++ b/tests/wpt/meta/css/css-text/line-breaking/line-breaking-atomic-011.html.ini
@ -1,2 +0,0 @@
-[line-breaking-atomic-011.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-001-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-001-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-001-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-002-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-002-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-002-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-003-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-003-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-003-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-008-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-008-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-008-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-009-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-009-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-009-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-010-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-010-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-010-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-011-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-011-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-011-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-014-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-014-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-014-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-016-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-016-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-016-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-020-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-020-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-020-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-021-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-021-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-021-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/reference/shaping-022-ref.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/reference/shaping-022-ref.html.ini
@ -1,2 +0,0 @@
-[shaping-022-ref.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-001.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-001.html.ini
@ -0,0 +1,2 @@
+[shaping-001.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-002.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-002.html.ini
@ -0,0 +1,2 @@
+[shaping-002.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-003.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-003.html.ini
@ -0,0 +1,2 @@
+[shaping-003.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-008.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-008.html.ini
@ -0,0 +1,2 @@
+[shaping-008.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-014.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-014.html.ini
@ -0,0 +1,2 @@
+[shaping-014.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-016.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-016.html.ini
@ -0,0 +1,2 @@
+[shaping-016.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-017.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-017.html.ini
@ -0,0 +1,2 @@
+[shaping-017.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-018.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-018.html.ini
@ -0,0 +1,2 @@
+[shaping-018.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-020.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-020.html.ini
@ -0,0 +1,2 @@
+[shaping-020.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-021.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-021.html.ini
@ -0,0 +1,2 @@
+[shaping-021.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-022.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-022.html.ini
@ -0,0 +1,2 @@
+[shaping-022.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-023.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-023.html.ini
@ -0,0 +1,2 @@
+[shaping-023.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-024.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-024.html.ini
@ -0,0 +1,2 @@
+[shaping-024.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/shaping/shaping-025.html.ini
+++ b/tests/wpt/meta/css/css-text/shaping/shaping-025.html.ini
@ -0,0 +1,2 @@
+[shaping-025.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/word-break/word-break-manual-001.html.ini
+++ b/tests/wpt/meta/css/css-text/word-break/word-break-manual-001.html.ini
@ -0,0 +1,2 @@
+[word-break-manual-001.html]
+  expected: FAIL
--- a/tests/wpt/meta/css/css-text/word-break/word-break-normal-002.html.ini
+++ b/tests/wpt/meta/css/css-text/word-break/word-break-normal-002.html.ini
@ -1,2 +0,0 @@
-[word-break-normal-002.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/word-break/word-break-normal-003.html.ini
+++ b/tests/wpt/meta/css/css-text/word-break/word-break-normal-003.html.ini
@ -1,2 +0,0 @@
-[word-break-normal-003.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/word-break/word-break-normal-th-000.html.ini
+++ b/tests/wpt/meta/css/css-text/word-break/word-break-normal-th-000.html.ini
@ -1,2 +0,0 @@
-[word-break-normal-th-000.html]
-  expected: FAIL
--- a/tests/wpt/meta/css/css-text/word-break/word-break-normal-th-001.html.ini
+++ b/tests/wpt/meta/css/css-text/word-break/word-break-normal-th-001.html.ini
@ -1,2 +0,0 @@
-[word-break-normal-th-001.html]
-  expected: FAIL