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package com.mapbox.mapboxsdk.offline;
import android.os.Parcel;
import android.os.Parcelable;
import com.mapbox.geojson.Feature;
import com.mapbox.geojson.Geometry;
import com.mapbox.mapboxsdk.geometry.LatLngBounds;
import com.mapbox.turf.TurfMeasurement;
/**
* An offline region defined by a style URL, geometry, zoom range, and
* device pixel ratio.
* <p>
* Both minZoom and maxZoom must be ≥ 0, and maxZoom must be ≥ minZoom.
* <p>
* maxZoom may be ∞, in which case for each tile source, the region will include
* tiles from minZoom up to the maximum zoom level provided by that source.
* <p>
* pixelRatio must be ≥ 0 and should typically be 1.0 or 2.0.
*/
public class OfflineGeometryRegionDefinition implements OfflineRegionDefinition, Parcelable {
private String styleURL;
private Geometry geometry;
private double minZoom;
private double maxZoom;
private float pixelRatio;
/**
* Constructor to create an OfflineGeometryRegionDefinition from parameters.
*
* @param styleURL the style
* @param geometry the geometry
* @param minZoom min zoom
* @param maxZoom max zoom
* @param pixelRatio pixel ratio of the device
*/
public OfflineGeometryRegionDefinition(
String styleURL, Geometry geometry, double minZoom, double maxZoom, float pixelRatio) {
// Note: Also used in JNI
this.styleURL = styleURL;
this.geometry = geometry;
this.minZoom = minZoom;
this.maxZoom = maxZoom;
this.pixelRatio = pixelRatio;
}
/**
* Constructor to create an OfflineGeometryRegionDefinition from a Parcel.
*
* @param parcel the parcel to create the OfflineGeometryRegionDefinition from
*/
public OfflineGeometryRegionDefinition(Parcel parcel) {
this.styleURL = parcel.readString();
this.geometry = Feature.fromJson(parcel.readString()).geometry();
this.minZoom = parcel.readDouble();
this.maxZoom = parcel.readDouble();
this.pixelRatio = parcel.readFloat();
}
/*
* Getters
*/
public String getStyleURL() {
return styleURL;
}
public Geometry getGeometry() {
return geometry;
}
/**
* Calculates the bounding box for the Geometry it contains
* to retain backwards compatibility
* @return the {@link LatLngBounds} or null
*/
@Override
public LatLngBounds getBounds() {
if (geometry == null) {
return null;
}
double[] bbox = TurfMeasurement.bbox(geometry);
return LatLngBounds.from(bbox[3], bbox[2], bbox[1], bbox[0]);
}
public double getMinZoom() {
return minZoom;
}
public double getMaxZoom() {
return maxZoom;
}
public float getPixelRatio() {
return pixelRatio;
}
/*
* Parceable
*/
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(styleURL);
dest.writeString(Feature.fromGeometry(geometry).toJson());
dest.writeDouble(minZoom);
dest.writeDouble(maxZoom);
dest.writeFloat(pixelRatio);
}
public static final Creator CREATOR = new Creator() {
public OfflineGeometryRegionDefinition createFromParcel(Parcel in) {
return new OfflineGeometryRegionDefinition(in);
}
public OfflineGeometryRegionDefinition[] newArray(int size) {
return new OfflineGeometryRegionDefinition[size];
}
};
}
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