Function fullViewportRepaintFromHome

src/ink/log-update.ts:1011–1042

(
  frame: Frame,
  stylePool: StylePool,
  previousFrame?: Frame,
  options?: {
    clearRowsBeforeWrite?: boolean
    clearViewportBeforeWrite?: boolean
    forceClearViewportRemainder?: boolean
  },
)

}

function fullViewportRepaintFromHome(
  frame: Frame,
  stylePool: StylePool,
  previousFrame?: Frame,
  options?: {
    clearRowsBeforeWrite?: boolean
    clearViewportBeforeWrite?: boolean
    forceClearViewportRemainder?: boolean
  },
): Diff {
  const screen = new VirtualScreen({ x: 0, y: 0 }, frame.viewport.width)
  screen.diff.push({
    type: 'stdout',
    content: options?.clearViewportBeforeWrite
      ? ERASE_SCREEN + CURSOR_HOME
      : CURSOR_HOME,
  })
  // shouldClearViewportRemainder returns false on identical-dimension frames
  // (empty-row loop), leaving stale cells below content on ctrl+l spam.
  // Force ESC[J (clear-to-end) without an ESC[2J that would scroll content
  // into scrollback.
  const clearToViewportEnd =
    options?.forceClearViewportRemainder ||
    shouldClearViewportRemainder(previousFrame, frame)
  renderFrameSlice(screen, frame, 0, frame.screen.height, stylePool, {
    clearRowTails: !options?.clearRowsBeforeWrite,
    clearRowsBeforeWrite: options?.clearRowsBeforeWrite,
    clearToViewportEnd,
    previousFrame,
  })
  return screen.diff
}

function fullRepaintFromPreviousOutputTop(
  prev: Frame,