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#pragma once
#include <mbgl/style/image_impl.hpp>
#include <mbgl/util/immutable.hpp>
#include <map>
#include <string>
namespace mbgl {
template <class T>
class Actor;
namespace gfx {
class UploadPass;
} // namespace gfx
class ImageManagerObserver;
class ImageRequestor;
/**
* @brief tracks requests for icon images from tile workers and sends responses when the requests are fulfilled.
*/
class ImageManager {
public:
ImageManager();
ImageManager(const ImageManager&) = delete;
ImageManager& operator=(const ImageManager&) = delete;
~ImageManager();
void setObserver(ImageManagerObserver*);
void setLoaded(bool);
bool isLoaded() const;
void dumpDebugLogs() const;
const style::Image::Impl* getImage(const std::string&) const;
const Immutable<style::Image::Impl>* getSharedImage(const std::string&) const;
void addImage(Immutable<style::Image::Impl>);
bool updateImage(Immutable<style::Image::Impl>);
void removeImage(const std::string&);
void getImages(ImageRequestor&, ImageRequestPair&&);
void removeRequestor(ImageRequestor&);
void notifyIfMissingImageAdded();
void reduceMemoryUse();
void reduceMemoryUseIfCacheSizeExceedsLimit();
ImageVersionMap updatedImageVersions;
private:
void checkMissingAndNotify(ImageRequestor&, const ImageRequestPair&);
void notify(ImageRequestor&, const ImageRequestPair&) const;
void removePattern(const std::string&);
bool loaded = false;
std::map<ImageRequestor*, ImageRequestPair> requestors;
using Callback = std::function<void()>;
using ActorCallback = Actor<Callback>;
struct MissingImageRequestPair {
ImageRequestPair pair;
std::map<std::string, std::unique_ptr<ActorCallback>> callbacks;
};
std::map<ImageRequestor*, MissingImageRequestPair> missingImageRequestors;
std::map<std::string, std::set<ImageRequestor*>> requestedImages;
std::size_t requestedImagesCacheSize = 0ul;
ImageMap images;
ImageManagerObserver* observer = nullptr;
};
class ImageRequestor {
public:
explicit ImageRequestor(ImageManager&);
virtual ~ImageRequestor();
virtual void onImagesAvailable(ImageMap icons, ImageMap patterns, ImageVersionMap versionMap, uint64_t imageCorrelationID) = 0;
private:
ImageManager& imageManager;
};
} // namespace mbgl
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