[android] jni high level binding refactor

1 files changed, 31 insertions, 0 deletions

diff --git a/platform/android/src/geometry/lat_lng_bounds.cpp b/platform/android/src/geometry/lat_lng_bounds.cpp
new file mode 100644
index 0000000000..9efacde120
--- /dev/null
+++ b/platform/android/src/geometry/lat_lng_bounds.cpp
@@ -0,0 +1,31 @@
+#include "lat_lng_bounds.hpp"
+
+namespace mbgl {
+namespace android {
+
+jni::Object<LatLngBounds> LatLngBounds::New(jni::JNIEnv& env, mbgl::LatLngBounds bounds) {
+    static auto constructor = LatLngBounds::javaClass.GetConstructor<double, double, double, double>(env);
+    return LatLngBounds::javaClass.New(env, constructor, bounds.north(), bounds.east(), bounds.south(), bounds.west());
+}
+
+mbgl::LatLngBounds LatLngBounds::getLatLngBounds(jni::JNIEnv& env, jni::Object<LatLngBounds> bounds) {
+    static auto swLat = LatLngBounds::javaClass.GetField<jni::jdouble>(env, "mLatSouth");
+    static auto swLon = LatLngBounds::javaClass.GetField<jni::jdouble>(env, "mLonWest");
+    static auto neLat = LatLngBounds::javaClass.GetField<jni::jdouble>(env, "mLatNorth");
+    static auto neLon = LatLngBounds::javaClass.GetField<jni::jdouble>(env, "mLonEast");
+    return mbgl::LatLngBounds::hull(
+        { bounds.Get(env, swLat), bounds.Get(env, swLon) },
+        { bounds.Get(env, neLat), bounds.Get(env, neLon) }
+    );
+}
+
+void LatLngBounds::registerNative(jni::JNIEnv& env) {
+    // Lookup the class
+    LatLngBounds::javaClass = *jni::Class<LatLngBounds>::Find(env).NewGlobalRef(env).release();
+}
+
+jni::Class<LatLngBounds> LatLngBounds::javaClass;
+
+
+} // namespace android
+} // namespace mbgl
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