Zoom property type of GeoMapView and layers must be a double

[Flaurite]

Feature Description

The zoom attribute from View object in OpenLayers can be non-integer. It is configured by the constrainResolution option (see View :: docs).

Also, see https://openlayers.org/en/latest/apidoc/module-ol_View-View.html#getZoom.

For instance, Vaadin add-on applies only double type for zoom level (see https://vaadin.com/docs/latest/components/map#events).

Changes

Changed type of zoom properties from Integer to Double.

1. For VectorLayer, TileLayer, ImageLayer layers the following methods are affected:

   • getMinZoom()
   • setMinZoom()
   • withMinZoom()
   • getMaxZoom()
   • setMaxZoom()
   • withMaxZoom()

2. For GeoMapView the following methods are affected:

   • getMinZoom()
   • setMinZoom()
   • withMinZoom()
   • getMaxZoom()
   • setMaxZoom()
   • withMaxZoom()
   • setZoom() - note, takes primitive double
   • getZoom() - note, returns primitive double

In XML according attributes changed to double type.

Breaking Changes

Due to changed type to Double, methods that work with zoom/minZoom/maxZoom are affected.

For instance, if you programmatically change the zoom properties of VectorLayer, TileLayer, ImageLayer or GeoMapView, the following code will not be compiled:

VectorLayer layer = new VectorLayer(); // any layer from above
layer.setMinZoom(5); // layer.withMinZoom(5);
layer.setMaxZoom(10); // layer.withMaxZoom(10);
Integer minZoom = layer.getMinZoom();
Integer maxZoom = layer.getMaxZoom();

GeoMapView mapView = new GeoMapView();
mapView.setMaxZoom(10);
mapView.setMinZoom(2);
Integer maxZoom = mapView.getMaxZoom();
Integer minZoom = mapView.getMinZoom();
int zoom = mapView.getZoom();

You should change integer values to double to fix a compilation.

Values defined in XML are loaded in correct way, thus using integer in XML does not break application.

Note, XyzSource and OsmSource takes Integer type for minZoom/maxZoom, otherwise component does not work.