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#pragma once
#include "StarRect.hpp"
#include "StarMap.hpp"
#include "StarString.hpp"
#include "StarThread.hpp"
#include "StarAssetPath.hpp"
#include "StarTtlCache.hpp"
namespace Star {
STAR_CLASS(ImageMetadataDatabase);
// Caches image size, image spaces, and nonEmptyRegion completely until a
// reload, does not expire cached values in a TTL based way like Assets,
// because they are expensive to compute and cheap to keep around.
class ImageMetadataDatabase {
public:
ImageMetadataDatabase();
Vec2U imageSize(AssetPath const& path) const;
List<Vec2I> imageSpaces(AssetPath const& path, Vec2F position, float fillLimit, bool flip) const;
RectU nonEmptyRegion(AssetPath const& path) const;
void cleanup() const;
private:
// Removes image processing directives that don't affect image spaces /
// non-empty regions.
static AssetPath filterProcessing(AssetPath const& path);
Vec2U calculateImageSize(AssetPath const& path) const;
// Path, position, fillLimit, and flip
typedef tuple<AssetPath, Vec2I, float, bool> SpacesEntry;
mutable Mutex m_mutex;
mutable HashTtlCache<AssetPath, Vec2U> m_sizeCache;
mutable HashTtlCache<SpacesEntry, List<Vec2I>> m_spacesCache;
mutable HashTtlCache<AssetPath, RectU> m_regionCache;
};
}
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