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#include "map_snapshotter.hpp"
#include <mbgl/renderer/renderer.hpp>
#include <mbgl/style/style.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,
const jni::Object<MapSnapshotter>& _obj,
const jni::Object<FileSource>& _jFileSource,
jni::jfloat _pixelRatio,
jni::jint width,
jni::jint height,
const jni::String& styleURL,
const jni::String& styleJSON,
const jni::Object<LatLngBounds>& region,
const jni::Object<CameraPosition>& position,
jni::jboolean _showLogo,
const jni::String& _localIdeographFontFamily)
: javaPeer(_env, _obj)
, pixelRatio(_pixelRatio) {
// Get a reference to the JavaVM for callbacks
if (_env.GetJavaVM(&vm) < 0) {
_env.ExceptionDescribe();
return;
}
jFileSource = FileSource::getNativePeer(_env, _jFileSource);
auto size = mbgl::Size { static_cast<uint32_t>(width), static_cast<uint32_t>(height) };
showLogo = _showLogo;
// Create the core snapshotter
snapshotter = std::make_unique<mbgl::MapSnapshotter>(
size,
pixelRatio,
mbgl::android::FileSource::getSharedResourceOptions(_env, _jFileSource),
mbgl::MapSnapshotterObserver::nullObserver(),
_localIdeographFontFamily ? jni::Make<std::string>(_env, _localIdeographFontFamily) : optional<std::string>{});
if (position) {
snapshotter->setCameraOptions(CameraPosition::getCameraOptions(_env, position, pixelRatio));
}
if (region) {
snapshotter->setRegion(LatLngBounds::getLatLngBounds(_env, region));
}
if (styleJSON) {
snapshotter->setStyleJSON(jni::Make<std::string>(_env, styleJSON));
} else {
snapshotter->setStyleJSON(jni::Make<std::string>(_env, styleURL));
}
}
MapSnapshotter::~MapSnapshotter() = default;
void MapSnapshotter::start(JNIEnv& env) {
MBGL_VERIFY_THREAD(tid);
activateFilesource(env);
snapshotter->snapshot([this](std::exception_ptr err,
PremultipliedImage image,
std::vector<std::string> attributions,
mbgl::MapSnapshotter::PointForFn pointForFn,
mbgl::MapSnapshotter::LatLngForFn latLngForFn) {
MBGL_VERIFY_THREAD(tid);
android::UniqueEnv _env = android::AttachEnv();
static auto& javaClass = jni::Class<MapSnapshotter>::Singleton(*_env);
if (err) {
// error handler callback
static auto onSnapshotFailed = javaClass.GetMethod<void (jni::String)>(*_env, "onSnapshotFailed");
auto weakReference = javaPeer.get(*_env);
if (weakReference) {
weakReference.Call(*_env, onSnapshotFailed, jni::Make<jni::String>(*_env, util::toString(err)));
}
} else {
// Create the wrapper
auto mapSnapshot = android::MapSnapshot::New(*_env, std::move(image), pixelRatio, attributions, showLogo, pointForFn, latLngForFn);
// invoke callback
static auto onSnapshotReady = javaClass.GetMethod<void (jni::Object<MapSnapshot>)>(*_env, "onSnapshotReady");
auto weakReference = javaPeer.get(*_env);
if (weakReference) {
weakReference.Call(*_env, onSnapshotReady, mapSnapshot);
}
}
deactivateFilesource(*_env);
});
}
void MapSnapshotter::cancel(JNIEnv& env) {
MBGL_VERIFY_THREAD(tid);
snapshotter->cancel();
deactivateFilesource(env);
}
void MapSnapshotter::setStyleUrl(JNIEnv& env, const jni::String& styleURL) {
snapshotter->setStyleURL(jni::Make<std::string>(env, styleURL));
}
void MapSnapshotter::setStyleJson(JNIEnv& env, const jni::String& styleJSON) {
snapshotter->setStyleJSON(jni::Make<std::string>(env, styleJSON));
}
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, const jni::Object<CameraPosition>& position) {
auto options = CameraPosition::getCameraOptions(env, position, pixelRatio);
snapshotter->setCameraOptions(options);
}
void MapSnapshotter::setRegion(JNIEnv& env, const 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 //
void MapSnapshotter::registerNative(jni::JNIEnv& env) {
// Lookup the class
static auto& javaClass = jni::Class<MapSnapshotter>::Singleton(env);
#define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
// Register the peer
jni::RegisterNativePeer<MapSnapshotter>(env, javaClass, "nativePtr",
jni::MakePeer<MapSnapshotter, const jni::Object<MapSnapshotter>&, const jni::Object<FileSource>&, jni::jfloat, jni::jint, jni::jint, const jni::String&, const jni::String&, const jni::Object<LatLngBounds>&, const jni::Object<CameraPosition>&, jni::jboolean, const jni::String&>,
"nativeInitialize",
"finalize",
METHOD(&MapSnapshotter::setStyleUrl, "setStyleUrl"),
METHOD(&MapSnapshotter::setStyleJson, "setStyleJson"),
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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