font_planner.hh

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#ifndef bqtFontPlannerHH
#define bqtFontPlannerHH
#include <atomic>
#include <memory>
#include <vector>
#include <mutex>
#include <unordered_set>
#include <condition_variable>
#include "read_font.hh"
 
class FontPlan
{
public:
    void Create(unsigned width, unsigned height, char32_t firstch, char32_t numch);
 
    struct Glyph
    {
        unsigned long bitmap; 
        bool          bold;   
    };
 
    Glyph LoadGlyph(char32_t ch, unsigned scanline, unsigned render_width) const;
 
private:
    std::vector<bool>                       bold_list;       
    std::vector<const unsigned char*>       bitmap_pointers; 
    std::vector<unsigned char>              resized_bitmaps; 
    std::vector<std::shared_ptr<GlyphList>> loaded_fonts;    
    std::unordered_set<std::string> font_filenames;          
 
    std::tuple<unsigned,unsigned,char32_t,char32_t> prev {};
 
    std::atomic<bool> ready { true };
    mutable std::condition_variable ready_notification { };
    mutable std::mutex working;
};
 
void FontPlannerTick();
 
#endif