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#include <mbgl/layermanager/layer_manager.hpp>
#include <mbgl/map/map_impl.hpp>
#include <mbgl/renderer/update_parameters.hpp>
#include <mbgl/storage/file_source.hpp>
#include <mbgl/style/style_impl.hpp>
#include <mbgl/util/exception.hpp>
namespace mbgl {
Map::Impl::Impl(RendererFrontend& frontend_,
MapObserver& observer_,
std::shared_ptr<FileSource> fileSource_,
const MapOptions& mapOptions)
: observer(observer_),
rendererFrontend(frontend_),
transform(observer, mapOptions.constrainMode(), mapOptions.viewportMode()),
mode(mapOptions.mapMode()),
pixelRatio(mapOptions.pixelRatio()),
crossSourceCollisions(mapOptions.crossSourceCollisions()),
fileSource(std::move(fileSource_)),
style(std::make_unique<style::Style>(fileSource, pixelRatio)),
annotationManager(*style) {
transform.setNorthOrientation(mapOptions.northOrientation());
style->impl->setObserver(this);
rendererFrontend.setObserver(*this);
transform.resize(mapOptions.size());
}
Map::Impl::~Impl() {
// Explicitly reset the RendererFrontend first to ensure it releases
// All shared resources (AnnotationManager)
rendererFrontend.reset();
};
#pragma mark - Map::Impl StyleObserver
void Map::Impl::onSourceChanged(style::Source& source) {
observer.onSourceChanged(source);
}
void Map::Impl::onUpdate() {
// Don't load/render anything in still mode until explicitly requested.
if (mode != MapMode::Continuous && !stillImageRequest) {
return;
}
TimePoint timePoint = mode == MapMode::Continuous ? Clock::now() : Clock::time_point::max();
transform.updateTransitions(timePoint);
UpdateParameters params = {style->impl->isLoaded(),
mode,
pixelRatio,
debugOptions,
timePoint,
transform.getState(),
style->impl->getGlyphURL(),
style->impl->spriteLoaded,
style->impl->getTransitionOptions(),
style->impl->getLight()->impl,
style->impl->getImageImpls(),
style->impl->getSourceImpls(),
style->impl->getLayerImpls(),
annotationManager.makeWeakPtr(),
fileSource,
prefetchZoomDelta,
bool(stillImageRequest),
crossSourceCollisions};
rendererFrontend.update(std::make_shared<UpdateParameters>(std::move(params)));
}
void Map::Impl::onStyleLoading() {
loading = true;
rendererFullyLoaded = false;
observer.onWillStartLoadingMap();
}
void Map::Impl::onStyleLoaded() {
if (!cameraMutated) {
jumpTo(style->getDefaultCamera());
}
if (LayerManager::annotationsEnabled) {
annotationManager.onStyleLoaded();
}
observer.onDidFinishLoadingStyle();
}
void Map::Impl::onStyleError(std::exception_ptr error) {
MapLoadError type;
std::string description;
try {
std::rethrow_exception(error);
} catch (const mbgl::util::StyleParseException& e) {
type = MapLoadError::StyleParseError;
description = e.what();
} catch (const mbgl::util::StyleLoadException& e) {
type = MapLoadError::StyleLoadError;
description = e.what();
} catch (const mbgl::util::NotFoundException& e) {
type = MapLoadError::NotFoundError;
description = e.what();
} catch (const std::exception& e) {
type = MapLoadError::UnknownError;
description = e.what();
}
observer.onDidFailLoadingMap(type, description);
}
#pragma mark - Map::Impl RendererObserver
void Map::Impl::onInvalidate() {
onUpdate();
}
void Map::Impl::onResourceError(std::exception_ptr error) {
if (mode != MapMode::Continuous && stillImageRequest) {
auto request = std::move(stillImageRequest);
request->callback(error);
}
}
void Map::Impl::onWillStartRenderingFrame() {
if (mode == MapMode::Continuous) {
observer.onWillStartRenderingFrame();
}
}
void Map::Impl::onDidFinishRenderingFrame(RenderMode renderMode, bool needsRepaint, bool placemenChanged) {
rendererFullyLoaded = renderMode == RenderMode::Full;
if (mode == MapMode::Continuous) {
observer.onDidFinishRenderingFrame({MapObserver::RenderMode(renderMode), needsRepaint, placemenChanged});
if (needsRepaint || transform.inTransition()) {
onUpdate();
} else if (rendererFullyLoaded) {
observer.onDidBecomeIdle();
}
} else if (stillImageRequest && rendererFullyLoaded) {
auto request = std::move(stillImageRequest);
request->callback(nullptr);
}
}
void Map::Impl::onWillStartRenderingMap() {
if (mode == MapMode::Continuous) {
observer.onWillStartRenderingMap();
}
}
void Map::Impl::onDidFinishRenderingMap() {
if (mode == MapMode::Continuous && loading) {
observer.onDidFinishRenderingMap(MapObserver::RenderMode::Full);
if (loading) {
loading = false;
observer.onDidFinishLoadingMap();
}
}
};
void Map::Impl::jumpTo(const CameraOptions& camera) {
cameraMutated = true;
transform.jumpTo(camera);
onUpdate();
}
void Map::Impl::onStyleImageMissing(const std::string& id, std::function<void()> done) {
if (!style->getImage(id)) observer.onStyleImageMissing(id);
done();
onUpdate();
}
void Map::Impl::onRemoveUnusedStyleImages(const std::vector<std::string>& unusedImageIDs) {
for (const auto& unusedImageID : unusedImageIDs) {
if (observer.onCanRemoveUnusedStyleImage(unusedImageID)) {
style->removeImage(unusedImageID);
}
}
}
} // namespace mbgl
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