Method screenAlignmentPattern

src/common/InputHandler.ts:3367–3387

* ESC # 8 * DEC mnemonic: DECALN (https://vt100.net/docs/vt510-rm/DECALN.html) * This control function fills the complete screen area with * a test pattern (E) used for adjusting screen alignment. * * @vt: #Y ESC DECALN "Screen Alignment Pattern" "ESC # 8" "Fill viewport

()

   * @vt: #Y   ESC   DECALN   "Screen Alignment Pattern"  "ESC # 8"  "Fill viewport with a test pattern (E)."
   */
  public screenAlignmentPattern(): boolean {
    // prepare cell data
    const cell = new CellData();
    cell.content = 1 << Content.WIDTH_SHIFT | 'E'.charCodeAt(0);
    cell.fg = this._curAttrData.fg;
    cell.bg = this._curAttrData.bg;


    this._setCursor(0, 0);
    for (let yOffset = 0; yOffset < this._bufferService.rows; ++yOffset) {
      const row = this._activeBuffer.ybase + this._activeBuffer.y + yOffset;
      const line = this._activeBuffer.lines.get(row);
      if (line) {
        line.fill(cell);
        line.isWrapped = false;
      }
    }
    this._dirtyRowTracker.markAllDirty();
    this._setCursor(0, 0);
    return true;
  }


  /**