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#include <mbgl/annotation/annotation_manager.hpp>
#include <mbgl/annotation/annotation_source.hpp>
#include <mbgl/annotation/annotation_tile.hpp>
#include <mbgl/annotation/symbol_annotation_impl.hpp>
#include <mbgl/annotation/line_annotation_impl.hpp>
#include <mbgl/annotation/fill_annotation_impl.hpp>
#include <mbgl/annotation/style_sourced_annotation_impl.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/style/layers/symbol_layer.hpp>
#include <mbgl/style/layers/symbol_layer_impl.hpp>
#include <mbgl/storage/file_source.hpp>
#include <boost/function_output_iterator.hpp>
namespace mbgl {
using namespace style;
const std::string AnnotationManager::SourceID = "com.mapbox.annotations";
const std::string AnnotationManager::PointLayerID = "com.mapbox.annotations.points";
AnnotationManager::AnnotationManager(float pixelRatio)
: spriteAtlas(1024, 1024, pixelRatio) {
struct NullFileSource : public FileSource {
std::unique_ptr<AsyncRequest> request(const Resource&, Callback) override {
assert(false);
return nullptr;
}
};
NullFileSource nullFileSource;
// This is a special atlas, holding only images added via addIcon. But we need its isLoaded()
// method to return true.
spriteAtlas.load("", nullFileSource);
}
AnnotationManager::~AnnotationManager() = default;
AnnotationID AnnotationManager::addAnnotation(const Annotation& annotation, const uint8_t maxZoom) {
AnnotationID id = nextID++;
Annotation::visit(annotation, [&] (const auto& annotation_) {
this->add(id, annotation_, maxZoom);
});
return id;
}
Update AnnotationManager::updateAnnotation(const AnnotationID& id, const Annotation& annotation, const uint8_t maxZoom) {
return Annotation::visit(annotation, [&] (const auto& annotation_) {
return this->update(id, annotation_, maxZoom);
});
}
void AnnotationManager::removeAnnotation(const AnnotationID& id) {
if (symbolAnnotations.find(id) != symbolAnnotations.end()) {
symbolTree.remove(symbolAnnotations.at(id));
symbolAnnotations.erase(id);
} else if (shapeAnnotations.find(id) != shapeAnnotations.end()) {
obsoleteShapeAnnotationLayers.insert(shapeAnnotations.at(id)->layerID);
shapeAnnotations.erase(id);
} else {
assert(false); // Should never happen
}
}
void AnnotationManager::add(const AnnotationID& id, const SymbolAnnotation& annotation, const uint8_t) {
auto impl = std::make_shared<SymbolAnnotationImpl>(id, annotation);
symbolTree.insert(impl);
symbolAnnotations.emplace(id, impl);
}
void AnnotationManager::add(const AnnotationID& id, const LineAnnotation& annotation, const uint8_t maxZoom) {
ShapeAnnotationImpl& impl = *shapeAnnotations.emplace(id,
std::make_unique<LineAnnotationImpl>(id, annotation, maxZoom)).first->second;
obsoleteShapeAnnotationLayers.erase(impl.layerID);
}
void AnnotationManager::add(const AnnotationID& id, const FillAnnotation& annotation, const uint8_t maxZoom) {
ShapeAnnotationImpl& impl = *shapeAnnotations.emplace(id,
std::make_unique<FillAnnotationImpl>(id, annotation, maxZoom)).first->second;
obsoleteShapeAnnotationLayers.erase(impl.layerID);
}
void AnnotationManager::add(const AnnotationID& id, const StyleSourcedAnnotation& annotation, const uint8_t maxZoom) {
ShapeAnnotationImpl& impl = *shapeAnnotations.emplace(id,
std::make_unique<StyleSourcedAnnotationImpl>(id, annotation, maxZoom)).first->second;
obsoleteShapeAnnotationLayers.erase(impl.layerID);
}
Update AnnotationManager::update(const AnnotationID& id, const SymbolAnnotation& annotation, const uint8_t maxZoom) {
Update result = Update::Nothing;
auto it = symbolAnnotations.find(id);
if (it == symbolAnnotations.end()) {
assert(false); // Attempt to update a non-existent symbol annotation
return result;
}
const SymbolAnnotation& existing = it->second->annotation;
if (existing.geometry != annotation.geometry) {
result |= Update::AnnotationData;
}
if (existing.icon != annotation.icon) {
result |= Update::AnnotationData | Update::AnnotationStyle;
}
if (result != Update::Nothing) {
removeAndAdd(id, annotation, maxZoom);
}
return result;
}
Update AnnotationManager::update(const AnnotationID& id, const LineAnnotation& annotation, const uint8_t maxZoom) {
auto it = shapeAnnotations.find(id);
if (it == shapeAnnotations.end()) {
assert(false); // Attempt to update a non-existent shape annotation
return Update::Nothing;
}
removeAndAdd(id, annotation, maxZoom);
return Update::AnnotationData | Update::AnnotationStyle;
}
Update AnnotationManager::update(const AnnotationID& id, const FillAnnotation& annotation, const uint8_t maxZoom) {
auto it = shapeAnnotations.find(id);
if (it == shapeAnnotations.end()) {
assert(false); // Attempt to update a non-existent shape annotation
return Update::Nothing;
}
removeAndAdd(id, annotation, maxZoom);
return Update::AnnotationData | Update::AnnotationStyle;
}
Update AnnotationManager::update(const AnnotationID& id, const StyleSourcedAnnotation& annotation, const uint8_t maxZoom) {
auto it = shapeAnnotations.find(id);
if (it == shapeAnnotations.end()) {
assert(false); // Attempt to update a non-existent shape annotation
return Update::Nothing;
}
removeAndAdd(id, annotation, maxZoom);
return Update::AnnotationData | Update::AnnotationStyle;
}
void AnnotationManager::removeAndAdd(const AnnotationID& id, const Annotation& annotation, const uint8_t maxZoom) {
removeAnnotation(id);
Annotation::visit(annotation, [&] (const auto& annotation_) {
this->add(id, annotation_, maxZoom);
});
}
std::unique_ptr<AnnotationTileData> AnnotationManager::getTileData(const CanonicalTileID& tileID) {
if (symbolAnnotations.empty() && shapeAnnotations.empty())
return nullptr;
auto tileData = std::make_unique<AnnotationTileData>();
AnnotationTileLayer& pointLayer = tileData->layers.emplace(PointLayerID, PointLayerID).first->second;
LatLngBounds tileBounds(tileID);
symbolTree.query(boost::geometry::index::intersects(tileBounds),
boost::make_function_output_iterator([&](const auto& val){
val->updateLayer(tileID, pointLayer);
}));
for (const auto& shape : shapeAnnotations) {
shape.second->updateTileData(tileID, *tileData);
}
return tileData;
}
void AnnotationManager::updateStyle(Style& style) {
// Create annotation source, point layer, and point bucket
if (!style.getSource(SourceID)) {
std::unique_ptr<Source> source = std::make_unique<AnnotationSource>();
source->baseImpl->enabled = true;
style.addSource(std::move(source));
std::unique_ptr<SymbolLayer> layer = std::make_unique<SymbolLayer>(PointLayerID, SourceID);
layer->setSourceLayer(PointLayerID);
layer->setIconImage({"{sprite}"});
layer->setIconAllowOverlap(true);
layer->setIconIgnorePlacement(true);
layer->impl->spriteAtlas = &spriteAtlas;
style.addLayer(std::move(layer));
}
for (const auto& shape : shapeAnnotations) {
shape.second->updateStyle(style);
}
for (const auto& layer : obsoleteShapeAnnotationLayers) {
if (style.getLayer(layer)) {
style.removeLayer(layer);
}
}
obsoleteShapeAnnotationLayers.clear();
}
void AnnotationManager::updateData() {
for (auto& tile : tiles) {
tile->setData(getTileData(tile->id.canonical));
}
}
void AnnotationManager::addTile(AnnotationTile& tile) {
tiles.insert(&tile);
tile.setData(getTileData(tile.id.canonical));
}
void AnnotationManager::removeTile(AnnotationTile& tile) {
tiles.erase(&tile);
}
void AnnotationManager::addIcon(const std::string& name, std::shared_ptr<const SpriteImage> sprite) {
spriteAtlas.setSprite(name, sprite);
spriteAtlas.updateDirty();
}
void AnnotationManager::removeIcon(const std::string& name) {
spriteAtlas.removeSprite(name);
spriteAtlas.updateDirty();
}
double AnnotationManager::getTopOffsetPixelsForIcon(const std::string& name) {
auto sprite = spriteAtlas.getSprite(name);
return sprite ? -(sprite->image.size.height / sprite->pixelRatio) / 2 : 0;
}
} // namespace mbgl
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