include/library/framebuffer-font2.hpp

   1 #ifndef _library__framebuffer_font2__hpp__included__
   2 #define _library__framebuffer_font2__hpp__included__
   3
   4 #include <vector>
   5 #include <cstdint>
   6 #include <functional>
   7 #include <cstdlib>
   8 #include <iostream>
   9 #include <stdexcept>
  10 #include <map>
  11 #include "framebuffer.hpp"
  12
  13 namespace framebuffer
  14 {
  15 struct font2
  16 {
  17 public:
  18         struct glyph
  19         {
  20                 glyph();
  21                 glyph(std::istream& s);
  22                 unsigned width;
  23                 unsigned height;
  24                 unsigned stride;
  25                 std::vector<uint32_t> fglyph;   //Bitpacked, element breaks between rows.
  26                 void render(fb<false>& fb, int32_t x, int32_t y, color fg, color bg, color hl) const;
  27                 void render(fb<true>& fb, int32_t x, int32_t y, color fg, color bg, color hl) const;
  28                 void render(uint8_t* buf, size_t stride, uint32_t u, uint32_t v, uint32_t w, uint32_t h) const;
  29         };
  30         font2();
  31         font2(const std::string& file);
  32         font2(struct font& bfont);
  33         void add(const std::u32string& key, const glyph& fglyph) throw(std::bad_alloc);
  34         std::u32string best_ligature_match(const std::u32string& codepoints, size_t start) const
  35                 throw(std::bad_alloc);
  36         const glyph& lookup_glyph(const std::u32string& key) const throw();
  37         unsigned get_rowadvance() const throw() { return rowadvance; }
  38         std::pair<uint32_t, uint32_t>  get_metrics(const std::u32string& str, uint32_t xalign) const;
  39         void for_each_glyph(const std::u32string& str, uint32_t xalign, std::function<void(uint32_t x, uint32_t y,
  40                 const glyph& g)> cb) const;
  41 private:
  42         std::map<std::u32string, glyph> glyphs;
  43         unsigned rowadvance;
  44 };
  45 }
  46 #endif