Files
Codeman/packages/xterm-zerolag-input/src/cell-dimensions.ts
T
arkonandClaude Opus 4.6 e8fd358923 fix: overlay rendering — vertical alignment, line artifact, and duplicate class members
Overlay renderer (xterm-zerolag-input):
- Add charTop/charHeight to CellDimensions and RenderParams for precise
  vertical text positioning matching xterm's canvas renderer
- Convert device.char dimensions to CSS pixels via devicePixelRatio
- Extend line div background 1px past cell boundary to cover compositing
  seam between overlay layer (z-index:7) and canvas layer below
- Remove -webkit-font-smoothing/text-rendering overrides that made overlay
  text thinner than canvas text
- Add per-span height/lineHeight for natural CSS vertical centering
- Add setPrompt() method for runtime prompt strategy switching (fixes tab
  switching crash with "setPrompt is not a function")

app.js duplicate class members:
- Remove dead formatTokens duplicate (line ~5590 shadowed precise version)
- Remove fire-and-forget resetCircuitBreaker duplicate (shadowed notification version)
- Rename mux-panel killAllSessions to killAllMuxSessions (was shadowing
  Codeman session killer, breaking Ctrl+K)

Other:
- Update index.html onclick to use killAllMuxSessions
- Add getTeamTasks mock to test route context

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-01 16:27:40 +01:00

48 lines
1.6 KiB
TypeScript

import type { XtermTerminal, CellDimensions } from './types.js';
/**
* Get cell dimensions from the terminal, handling xterm.js v5 (private API)
* and v7+ (public API).
*
* Returns CSS-pixel values. xterm's `device.char` is in device pixels, so
* we divide by `devicePixelRatio` to stay consistent with `css.cell`.
*
* Returns `null` if the terminal is not yet rendered or dimensions are
* unavailable.
*/
export function getCellDimensions(terminal: XtermTerminal): CellDimensions | null {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const t = terminal as any;
const dpr = typeof devicePixelRatio === 'number' && devicePixelRatio > 0
? devicePixelRatio : 1;
// Try v7+ public API first
if (t.dimensions?.css?.cell) {
const cellH = t.dimensions.css.cell.height;
return {
width: t.dimensions.css.cell.width,
height: cellH,
charTop: (t.dimensions?.device?.char?.top ?? 0) / dpr,
charHeight: (t.dimensions?.device?.char?.height ?? (cellH * dpr)) / dpr,
};
}
// Fall back to v5 private API
try {
const dims = t._core?._renderService?.dimensions;
if (dims?.css?.cell) {
const cellH = dims.css.cell.height;
return {
width: dims.css.cell.width,
height: cellH,
charTop: (dims.device?.char?.top ?? 0) / dpr,
charHeight: (dims.device?.char?.height ?? (cellH * dpr)) / dpr,
};
}
} catch {
// Private API may throw in some environments
}
return null;
}