font.h

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#pragma once
 
#include "esphome/core/color.h"
#include "esphome/core/datatypes.h"
#include "esphome/core/defines.h"
#ifdef USE_DISPLAY
#include "esphome/components/display/display.h"
#endif
 
namespace esphome {
namespace font {
 
class Font;
 
class Glyph {
 public:
  constexpr Glyph(const char *a_char, const uint8_t *data, int advance, int offset_x, int offset_y, int width,
                  int height)
      : a_char(a_char),
        data(data),
        advance(advance),
        offset_x(offset_x),
        offset_y(offset_y),
        width(width),
        height(height) {}
 
  const uint8_t *get_char() const { return reinterpret_cast<const uint8_t *>(this->a_char); }
 
  bool compare_to(const uint8_t *str) const;
 
  int match_length(const uint8_t *str) const;
 
  void scan_area(int *x1, int *y1, int *width, int *height) const;
 
  const char *a_char;
  const uint8_t *data;
  int advance;
  int offset_x;
  int offset_y;
  int width;
  int height;
 
 protected:
  friend Font;
};
 
class Font
#ifdef USE_DISPLAY
    : public display::BaseFont
#endif
{
 public:
  Font(const Glyph *data, int data_nr, int baseline, int height, int descender, int xheight, int capheight,
       uint8_t bpp = 1);
 
  int match_next_glyph(const uint8_t *str, int *match_length) const;
 
#ifdef USE_DISPLAY
  void print(int x_start, int y_start, display::Display *display, Color color, const char *text,
             Color background) override;
  void measure(const char *str, int *width, int *x_offset, int *baseline, int *height) override;
#endif
  inline int get_baseline() { return this->baseline_; }
  inline int get_height() { return this->height_; }
  inline int get_ascender() { return this->baseline_; }
  inline int get_descender() { return this->descender_; }
  inline int get_linegap() { return this->linegap_; }
  inline int get_xheight() { return this->xheight_; }
  inline int get_capheight() { return this->capheight_; }
  inline int get_bpp() { return this->bpp_; }
 
  const ConstVector<Glyph> &get_glyphs() const { return glyphs_; }
 
 protected:
  ConstVector<Glyph> glyphs_;
  int baseline_;
  int height_;
  int descender_;
  int linegap_;
  int xheight_;
  int capheight_;
  uint8_t bpp_;  // bits per pixel
};
 
}  // namespace font
}  // namespace esphome