resize method

@override void resize(int newWidth, int newHeight, [ int? pixelWidth, int? pixelHeight, ])

Resize the terminal screen. newWidth and newHeight should be greater than 0. Main-buffer text is reflowed when reflowEnabled is true.

Implementation

@override
void resize(
  int newWidth,
  int newHeight, [
  int? pixelWidth,
  int? pixelHeight,
]) {
  if (_isDisposed) return;
  newWidth = max(newWidth, 1);
  newHeight = max(newHeight, 1);

  final nextCellPixelWidth = pixelWidth ?? _cellPixelWidth;
  final nextCellPixelHeight = pixelHeight ?? _cellPixelHeight;
  if (newWidth == _viewWidth &&
      newHeight == _viewHeight &&
      nextCellPixelWidth == _cellPixelWidth &&
      nextCellPixelHeight == _cellPixelHeight) {
    return;
  }

  final wasSynchronizedUpdateMode = _synchronizedUpdateMode;
  if (wasSynchronizedUpdateMode) {
    _synchronizedUpdateTimer?.cancel();
    _synchronizedUpdateTimer = null;
    _synchronizedUpdateMode = false;
  }

  onResize?.call(newWidth, newHeight, pixelWidth ?? 0, pixelHeight ?? 0);
  if (pixelWidth != null) {
    _cellPixelWidth = pixelWidth;
  }
  if (pixelHeight != null) {
    _cellPixelHeight = pixelHeight;
  }

  //we need to resize both buffers so that they are ready when we switch between them
  _altBuffer.resize(_viewWidth, _viewHeight, newWidth, newHeight);
  _mainBuffer.resize(_viewWidth, _viewHeight, newWidth, newHeight);

  _viewWidth = newWidth;
  _viewHeight = newHeight;

  if (buffer == _altBuffer) {
    buffer.clearScrollback();
  }

  _altBuffer.resetVerticalMargins();
  _mainBuffer.resetVerticalMargins();

  if (wasSynchronizedUpdateMode) notifyListeners();
  if (_inBandSizeReportMode) _sendInBandSizeReport();
}