[android] #5610 - Runtime style api - part 2

1 files changed, 52 insertions, 0 deletions

diff --git a/platform/android/src/style/conversion/function.hpp b/platform/android/src/style/conversion/function.hpp
new file mode 100644
index 0000000000..ad09ce02d2
--- /dev/null
+++ b/platform/android/src/style/conversion/function.hpp
@@ -0,0 +1,52 @@
+#pragma once
+
+#include <mbgl/style/property_value.hpp>
+#include "../../conversion/conversion.hpp"
+#include "../../conversion/constant.hpp"
+#include "types.hpp"
+#include "function.hpp"
+
+#include <jni/jni.hpp>
+
+#include <tuple>
+#include <vector>
+
+namespace mbgl {
+namespace android {
+namespace conversion {
+
+template <class T>
+inline jni::jobject* toFunctionStopJavaArray(jni::JNIEnv& env, std::vector<std::pair<float, T>> value) {
+    static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/mapbox/mapboxsdk/style/layers/Function$Stop")).release();
+    static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "(Ljava/lang/Object;Ljava/lang/Object;)V");
+
+    jni::jarray<jni::jobject>& jarray = jni::NewObjectArray(env, value.size(), *javaClass);
+
+    for(size_t i = 0; i < value.size(); i = i + 1) {
+        jni::SetObjectArrayElement(env, jarray, i, &jni::NewObject(env, *javaClass, *constructor, value[i].first, *convert<jni::jobject*, T>(env, value[i].second)));
+    }
+
+    return &jarray;
+}
+
+template <class T>
+struct Converter<jni::jobject*, mbgl::style::Function<T>> {
+
+    Result<jni::jobject*> operator()(jni::JNIEnv& env, const mbgl::style::Function<T>& value) const {
+        static jni::jclass* javaClass = jni::NewGlobalRef(env, &jni::FindClass(env, "com/mapbox/mapboxsdk/style/layers/Function")).release();
+        static jni::jmethodID* constructor = &jni::GetMethodID(env, *javaClass, "<init>", "([Lcom/mapbox/mapboxsdk/style/layers/Function$Stop;)V");
+        static jni::jmethodID* withBase = &jni::GetMethodID(env, *javaClass, "withBase", "(F)Lcom/mapbox/mapboxsdk/style/layers/Function;");
+
+        //Create object
+        jni::jobject* jfunction = &jni::NewObject(env, *javaClass, *constructor, *toFunctionStopJavaArray(env, value.getStops()));
+
+        //Set base
+        jni::CallMethod<jni::jobject*>(env, jfunction, *withBase, value.getBase());
+
+        return {jfunction};
+    }
+};
+
+} // namespace conversion
+} // namespace android
+} // namespace mbgl
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