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#include "map_snapshotter.hpp"
#include <mbgl/renderer/renderer.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/util/shared_thread_pool.hpp>
#include <mbgl/util/logging.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/actor/scheduler.hpp>
#include "../attach_env.hpp"
#include "map_snapshot.hpp"
namespace mbgl {
namespace android {
MapSnapshotter::MapSnapshotter(jni::JNIEnv& _env,
jni::Object<MapSnapshotter> _obj,
jni::Object<FileSource> _jFileSource,
jni::jfloat _pixelRatio,
jni::jint width,
jni::jint height,
jni::String styleURL,
jni::Object<LatLngBounds> region,
jni::Object<CameraPosition> position,
jni::jboolean _showLogo,
jni::String _programCacheDir)
: javaPeer(SeizeGenericWeakRef(_env, jni::Object<MapSnapshotter>(jni::NewWeakGlobalRef(_env, _obj.Get()).release())))
, pixelRatio(_pixelRatio)
, threadPool(sharedThreadPool()) {
// Get a reference to the JavaVM for callbacks
if (_env.GetJavaVM(&vm) < 0) {
_env.ExceptionDescribe();
return;
}
jFileSource = FileSource::getNativePeer(_env, _jFileSource);
auto& fileSource = mbgl::android::FileSource::getDefaultFileSource(_env, _jFileSource);
auto size = mbgl::Size { static_cast<uint32_t>(width), static_cast<uint32_t>(height) };
auto cameraOptions = position ? CameraPosition::getCameraOptions(_env, position) : CameraOptions();
optional<mbgl::LatLngBounds> bounds;
if (region) {
bounds = LatLngBounds::getLatLngBounds(_env, region);
}
showLogo = _showLogo;
// Create the core snapshotter
snapshotter = std::make_unique<mbgl::MapSnapshotter>(fileSource,
*threadPool,
jni::Make<std::string>(_env, styleURL),
size,
pixelRatio,
cameraOptions,
bounds,
jni::Make<std::string>(_env, _programCacheDir));
}
MapSnapshotter::~MapSnapshotter() = default;
void MapSnapshotter::start(JNIEnv& env) {
MBGL_VERIFY_THREAD(tid);
activateFilesource(env);
snapshotCallback = std::make_unique<Actor<mbgl::MapSnapshotter::Callback>>(
*Scheduler::GetCurrent(),
[this](std::exception_ptr err, PremultipliedImage image, std::vector<std::string> attributions, mbgl::MapSnapshotter::PointForFn pointForFn) {
MBGL_VERIFY_THREAD(tid);
android::UniqueEnv _env = android::AttachEnv();
if (err) {
// error handler callback
static auto onSnapshotFailed = javaClass.GetMethod<void (jni::String)>(*_env, "onSnapshotFailed");
auto message = jni::Make<jni::String>(*_env, util::toString(err));
javaPeer->Call(*_env, onSnapshotFailed, message);
jni::DeleteLocalRef(*_env, message);
} else {
// Create the wrapper
auto mapSnapshot = android::MapSnapshot::New(*_env, std::move(image), pixelRatio, attributions, showLogo, pointForFn);
// invoke callback
static auto onSnapshotReady = javaClass.GetMethod<void (jni::Object<MapSnapshot>)>(*_env, "onSnapshotReady");
javaPeer->Call(*_env, onSnapshotReady, mapSnapshot);
}
deactivateFilesource(*_env);
});
snapshotter->snapshot(snapshotCallback->self());
}
void MapSnapshotter::cancel(JNIEnv& env) {
MBGL_VERIFY_THREAD(tid);
snapshotCallback.reset();
deactivateFilesource(env);
}
void MapSnapshotter::setStyleUrl(JNIEnv& env, jni::String styleURL) {
snapshotter->setStyleURL(jni::Make<std::string>(env, styleURL));
}
void MapSnapshotter::setSize(JNIEnv&, jni::jint width, jni::jint height) {
auto size = mbgl::Size { static_cast<uint32_t>(width), static_cast<uint32_t>(height) };
snapshotter->setSize(size);
}
void MapSnapshotter::setCameraPosition(JNIEnv& env, jni::Object<CameraPosition> position) {
auto options = CameraPosition::getCameraOptions(env, position);
snapshotter->setCameraOptions(options);
}
void MapSnapshotter::setRegion(JNIEnv& env, jni::Object<LatLngBounds> region) {
snapshotter->setRegion(LatLngBounds::getLatLngBounds(env, region));
}
// Private methods //
void MapSnapshotter::activateFilesource(JNIEnv& env) {
if (!activatedFilesource) {
activatedFilesource = true;
jFileSource->resume(env);
}
}
void MapSnapshotter::deactivateFilesource(JNIEnv& env) {
if (activatedFilesource) {
activatedFilesource = false;
jFileSource->pause(env);
}
}
// Static methods //
jni::Class<MapSnapshotter> MapSnapshotter::javaClass;
void MapSnapshotter::registerNative(jni::JNIEnv& env) {
// Lookup the class
MapSnapshotter::javaClass = *jni::Class<MapSnapshotter>::Find(env).NewGlobalRef(env).release();
#define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
// Register the peer
jni::RegisterNativePeer<MapSnapshotter>(env, MapSnapshotter::javaClass, "nativePtr",
std::make_unique<MapSnapshotter, JNIEnv&, jni::Object<MapSnapshotter>, jni::Object<FileSource>, jni::jfloat, jni::jint, jni::jint, jni::String, jni::Object<LatLngBounds>, jni::Object<CameraPosition>, jni::jboolean, jni::String>,
"nativeInitialize",
"finalize",
METHOD(&MapSnapshotter::setStyleUrl, "setStyleUrl"),
METHOD(&MapSnapshotter::setSize, "setSize"),
METHOD(&MapSnapshotter::setCameraPosition, "setCameraPosition"),
METHOD(&MapSnapshotter::setRegion, "setRegion"),
METHOD(&MapSnapshotter::start, "nativeStart"),
METHOD(&MapSnapshotter::cancel, "nativeCancel")
);
}
} // namespace android
} // namespace mbgl
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