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package com.mapbox.mapboxsdk.testapp.activity.camera
import android.content.Context
import android.os.Bundle
import android.support.design.widget.BottomSheetBehavior
import android.support.v7.app.AppCompatActivity
import android.view.View
import com.mapbox.geojson.FeatureCollection
import com.mapbox.geojson.FeatureCollection.fromJson
import com.mapbox.geojson.Point
import com.mapbox.mapboxsdk.geometry.LatLng
import com.mapbox.mapboxsdk.geometry.LatLngBounds
import com.mapbox.mapboxsdk.maps.MapboxMap
import com.mapbox.mapboxsdk.maps.Style
import com.mapbox.mapboxsdk.style.layers.Property.ICON_ANCHOR_CENTER
import com.mapbox.mapboxsdk.style.layers.PropertyFactory.*
import com.mapbox.mapboxsdk.style.layers.SymbolLayer
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource
import com.mapbox.mapboxsdk.testapp.R
import com.mapbox.mapboxsdk.testapp.utils.GeoParseUtil.loadStringFromAssets
import com.mapbox.mapboxsdk.utils.BitmapUtils
import java.net.URISyntaxException
import kotlinx.android.synthetic.main.activity_latlngbounds.*
/**
* Test activity showcasing using the LatLngBounds camera API.
*/
class LatLngBoundsActivity : AppCompatActivity() {
private lateinit var mapboxMap: MapboxMap
private lateinit var bottomSheetBehavior: BottomSheetBehavior<*>
private lateinit var bounds: LatLngBounds
private val peekHeight by lazy {
375.toPx(this) // 375dp
}
private val additionalPadding by lazy {
32.toPx(this) // 32dp
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_latlngbounds)
initMapView(savedInstanceState)
}
private fun initMapView(savedInstanceState: Bundle?) {
mapView.onCreate(savedInstanceState)
mapView.getMapAsync { map ->
mapboxMap = map
val featureCollection: FeatureCollection = fromJson(loadStringFromAssets(this, "points-sf.geojson"))
bounds = createBounds(featureCollection)
map.getCameraForLatLngBounds(bounds, createPadding(peekHeight))?.let {
map.cameraPosition = it
}
try {
loadStyle(featureCollection)
} catch (e: URISyntaxException) {
e.printStackTrace()
}
}
}
private fun loadStyle(featureCollection: FeatureCollection) {
mapboxMap.setStyle(Style.Builder()
.fromUri(Style.MAPBOX_STREETS)
.withLayer(SymbolLayer("symbol", "symbol")
.withProperties(
iconAllowOverlap(true),
iconIgnorePlacement(true),
iconImage("icon"),
iconAnchor(ICON_ANCHOR_CENTER)
)
)
.withSource(GeoJsonSource("symbol", featureCollection))
.withImage("icon", BitmapUtils.getDrawableFromRes(this@LatLngBoundsActivity, R.drawable.ic_android)!!)
) {
initBottomSheet()
fab.setOnClickListener { bottomSheetBehavior.state = BottomSheetBehavior.STATE_EXPANDED }
}
}
private fun initBottomSheet() {
bottomSheetBehavior = BottomSheetBehavior.from(bottomSheet)
bottomSheetBehavior.setBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
override fun onSlide(bottomSheet: View, slideOffset: Float) {
val offset = convertSlideOffset(slideOffset)
val bottomPadding = (peekHeight * offset).toInt()
mapboxMap.getCameraForLatLngBounds(bounds, createPadding(bottomPadding))?.let {
mapboxMap.cameraPosition = it
}
}
override fun onStateChanged(bottomSheet: View, newState: Int) {
// no-op
}
})
}
// slideOffset ranges from NaN to -1.0, range from 1.0 to 0 instead
fun convertSlideOffset(slideOffset: Float): Float {
return if (slideOffset.equals(Float.NaN)) {
1.0f
} else {
1 + slideOffset
}
}
fun createPadding(bottomPadding: Int): IntArray {
return intArrayOf(additionalPadding, additionalPadding, additionalPadding, bottomPadding)
}
private fun createBounds(featureCollection: FeatureCollection): LatLngBounds {
val boundsBuilder = LatLngBounds.Builder()
featureCollection.features()?.let {
for (feature in it) {
val point = feature.geometry() as Point
boundsBuilder.include(LatLng(point.latitude(), point.longitude()))
}
}
return boundsBuilder.build()
}
override fun onStart() {
super.onStart()
mapView.onStart()
}
override fun onResume() {
super.onResume()
mapView.onResume()
}
override fun onPause() {
super.onPause()
mapView.onPause()
}
override fun onStop() {
super.onStop()
mapView.onStop()
}
override fun onLowMemory() {
super.onLowMemory()
mapView.onLowMemory()
}
override fun onDestroy() {
super.onDestroy()
mapView.onDestroy()
}
override fun onSaveInstanceState(outState: Bundle) {
super.onSaveInstanceState(outState)
mapView.onSaveInstanceState(outState)
}
}
fun Int.toPx(context: Context): Int = (this * context.resources.displayMetrics.density).toInt()
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