v13 patch: VoiceOver virtual accessibility tree

Browse Source

Complete rewrite of accessibility support. Instead of flat AXTextArea
on EmacsView, implements proper tree with virtual elements:

  EmacsWindow (AXWindow)
  └── EmacsView (AXGroup)
      ├── EmacsAccessibilityBuffer (AXTextArea) — window 1
      ├── EmacsAccessibilityBuffer (AXTextArea) — window 2
      └── ...

Each EmacsAccessibilityBuffer maps to one Emacs window and exposes:
- Buffer text via glyph row iteration (accurate, handles overlays)
- Visual line navigation (glyph_row vpos)
- Cursor tracking with glyph charpos mapping
- Hit testing (accessibilityRangeForPosition:)
- Selection range with active mark
- Screen geometry via pixel coordinate conversion
- Rich typing echo (kAXTextEditTypeTyping userInfo)
- UAZoomChangeFocus for Zoom

Dynamic tree rebuilt on each redisplay cycle from FRAME_ROOT_WINDOW.
Notifications on correct virtual elements (not container view).

3 review cycles (scores: 62 → 68 → 82), plus manual fixes for
hit testing and selection range.

...

This commit is contained in:

Daneel

2026-02-25 23:26:59 +01:00

parent f5ecc44871

commit 60afee0aec

1 changed files with 779 additions and 487 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

1266

patches/0001-ns-implement-AXBoundsForRange-for-macOS-Zoom-cursor-.patch

File diff suppressed because it is too large Load Diff