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Per-pane and global terminal zoom via keyboard

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Each leaf now carries an optional fontSizeOffset, persisted in
workspace.json alongside everything else. Ctrl+= / Ctrl+- / Ctrl+0
adjust the active pane; adding Shift escalates to every pane (the
mirror of the broadcast Shift+Alt convention, with shift alone since
the keys are otherwise unused). Bindings match on e.code so layouts
that don't have "=" / "-" / "0" in the same spot still work.

XtermPane gained a fontSize prop. A secondary effect reacts to changes:
set term.options.fontSize, fit() to recompute cols/rows for the new
cell size, refresh(), then resizePane so bash redraws the prompt at
the right width. No remount, so PTY + scrollback survive zoom changes.

The new tree helpers (resolveFontSize / adjustFontSize /
adjustAllFontSizes) are metadata-only — they don't swap leaf ids, so
nothing respawns. reshapeToPreset also carries the offset across when
splicing existing leaves into a new layout. 12 new vitest cases pin
those invariants plus the clamp and reset-to-default behaviour.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
megaproxy 2026-05-22 22:48:35 +01:00
parent 8f9667b218
commit aab36afce4
6 changed files with 237 additions and 11 deletions
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README.md
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@ -32,9 +32,13 @@ A Windows desktop app for running and arranging many WSL terminals at once. Buil
| `Ctrl+Shift+B` | toggle broadcast on active pane |
| `Ctrl+Shift+Alt+B` | toggle broadcast on ALL panes (same as the titlebar 📡 button) |
| `Ctrl+Shift+←` / `→` / `↑` / `↓` | focus neighbour pane in that direction |
| `Ctrl+=` / `Ctrl+-` / `Ctrl+0` | zoom the active pane in / out / back to default |
| `Ctrl+Shift+=` / `Ctrl+Shift+-` / `Ctrl+Shift+0` | same, applied to **every** pane (shift = "to all") |
Shortcuts work while a terminal is focused — we capture the key before xterm.js sees it. They don't fire while you're typing into a label edit or the palette input, so those still work normally. `Ctrl` and `⌘` (Cmd) are interchangeable.
Font size persists per pane in `workspace.json`, so a zoomed pane stays zoomed across restarts.
### Mouse + toolbar
- **Split panes** — `⇥` in the pane toolbar splits right, `⇣` splits down. The new pane inherits the parent's distro; the cwd defaults to `~` in the WSL distro.