public void OnUpdate(ZoomEngine engine, Matrix transform)
{
double panX = Context.FromPixels(engine.PanX);
double panY = Context.FromPixels(engine.PanY);
Element.SetScrolledPosition(panX, panY);
}
private void _framePreview_MouseWheel(object sender, MouseWheelEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed || e.RightButton == MouseButtonState.Pressed)
{
return;
}
ZoomEngine.Zoom(e.Delta);
Point mousePosition = e.GetPosition(_primary);
// The relative center must be moved as well!
double diffX = mousePosition.X / _primary.ActualWidth - _relativeCenter.X;
double diffY = mousePosition.Y / _primary.ActualHeight - _relativeCenter.Y;
_relativeCenter.X = mousePosition.X / _primary.ActualWidth - diffX / ZoomEngine.OldScale * ZoomEngine.Scale;
_relativeCenter.Y = mousePosition.Y / _primary.ActualHeight - diffY / ZoomEngine.OldScale * ZoomEngine.Scale;
_cbZoom.SelectedIndex = -1;
_cbZoom.Text = _zoomEngine.ScaleText;
SizeUpdate();
}
public void OnIdle(ZoomEngine engine)
{
Element.SendScrollFinished();
}
internal void ReloadSettings()
{
_zoomEngine = new ZoomEngine {
ZoomInMultiplier = _settings.ZoomInMultipler
};
}
