zoomIn method

void zoomIn ()

Increases the magnification of the plot area.

Implementation

void zoomIn() {
  bool needZoom;
  for (int index = 0;
      index < _chart._chartAxis._axisCollections.length;
      index++) {
    final dynamic axis = _chart._chartAxis._axisCollections[index];
    if (axis._zoomFactor <= 1.0 && axis._zoomFactor > 0.0) {
      if (axis._zoomFactor - 0.1 < 0) {
        needZoom = false;
        break;
      } else {
        axis._zoomFactor -= 0.1;
        axis._zoomPosition = 0.2;
        needZoom = true;
      }
    }
  }
  if (needZoom) {
    _chart._chartState._redraw();
  }
}