how add mousewheel event to make a zoom in and zoom out

[souhail-chougrani]

there is a way to add mousewheel event for ZoomIN and ZoomOut

[mcepo]

@ViewChild("gallery") gallery: NgxGalleryComponent;

@HostListener("mousewheel", ["$event"]) onMousewheel(event) {
    if (event.wheelDelta > 0) {
      this.gallery.preview.zoomIn();
    } else {
      this.gallery.preview.zoomOut();
    }
  } 

For future explorers

[souhail-chougrani]

@mcepo it work. thanks