scrollUp method

void scrollUp(
  1. int lines
)

Implementation

void scrollUp(int lines) {
  _invalidateCurrentLine();
  for (var i = absoluteMarginTop; i <= absoluteMarginBottom; i++) {
    if (i <= absoluteMarginBottom - lines) {
      this.lines.move(i + lines, i);
    } else {
      this.lines[i] = _newEmptyLine();
    }
  }
}