80 lines
1.7 KiB
C++
80 lines
1.7 KiB
C++
#ifndef MBGL_STYLE_SPRITE
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#define MBGL_STYLE_SPRITE
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#include <mbgl/util/image.hpp>
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#include <mbgl/util/noncopyable.hpp>
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#include <mbgl/util/ptr.hpp>
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#include <cstdint>
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#include <atomic>
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#include <iosfwd>
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#include <string>
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#include <unordered_map>
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#include <future>
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namespace mbgl {
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class FileSource;
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class SpritePosition {
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public:
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explicit SpritePosition() {}
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explicit SpritePosition(uint16_t x, uint16_t y, uint16_t width, uint16_t height, float pixelRatio, bool sdf);
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operator bool() const {
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return !(width == 0 && height == 0 && x == 0 && y == 0);
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}
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uint16_t x = 0, y = 0;
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uint16_t width = 0, height = 0;
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float pixelRatio = 1.0f;
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bool sdf = false;
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};
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class Sprite : public std::enable_shared_from_this<Sprite>, private util::noncopyable {
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private:
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struct Key {};
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void load(const util::ptr<FileSource> &fileSource);
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public:
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Sprite(const Key &, const std::string& base_url, float pixelRatio);
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static util::ptr<Sprite> Create(const std::string& base_url, float pixelRatio, const util::ptr<FileSource> &fileSource);
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const SpritePosition &getSpritePosition(const std::string& name) const;
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void waitUntilLoaded() const;
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bool isLoaded() const;
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operator bool() const;
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private:
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const bool valid;
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public:
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const float pixelRatio;
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const std::string spriteURL;
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const std::string jsonURL;
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std::unique_ptr<util::Image> raster;
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private:
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void parseJSON();
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void parseImage();
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void complete();
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private:
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std::string body;
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std::string image;
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std::atomic<bool> loadedImage;
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std::atomic<bool> loadedJSON;
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std::unordered_map<std::string, SpritePosition> pos;
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const SpritePosition empty;
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std::promise<void> promise;
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std::future<void> future;
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};
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}
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#endif
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