#pragma once
#include <stdint.h>
#include <stdbool.h>

// compatibility for adafruit fonts
#ifndef PROGMEM
#define PROGMEM
#endif

typedef struct {
    uint16_t bitmapOffset;
    uint8_t  width, height;
    uint8_t  xAdvance;
    int8_t   xOffset, yOffset;
} GFXglyph;

typedef struct {
    const uint8_t  *bitmap;
    const GFXglyph *glyph;
    uint8_t first, last;
    uint8_t yAdvance;
} GFXfont;

/**
 * @brief Canvas struct for the gfx library
 * Functions take the context and x,y coordinates of a pixel
 *
 * @param ctx any context that the draw/clear functions might need, ie display device
 * @param draw_pixel_callback function that gets called to draw a pixel
 * @param clear_pixel_callback function that gets called to clear a pixel
 */
typedef struct {
    void (*draw_pixel_callback)(void *ctx, uint8_t x, uint8_t y);
    void (*clear_pixel_callback)(void *ctx, uint8_t x, uint8_t y);
    void *ctx;
} gfx_canvas_t;

int16_t gfx_string_width(const GFXfont *f, const char *s);
int16_t gfx_draw_string(const gfx_canvas_t *canvas, const GFXfont* f, int16_t x, int16_t y, const char *s, bool inverted);
int16_t gfx_draw_string_centered(const gfx_canvas_t *canvas, const GFXfont *f, int16_t centerpoint, int16_t y, const char *s, bool inverted);
void gfx_draw_line(const gfx_canvas_t *canvas, uint8_t start_x, uint8_t start_y, uint8_t end_x, uint8_t end_y, bool inverted);
void gfx_draw_box(const gfx_canvas_t *canvas, uint8_t pos_x, uint8_t pos_y, uint8_t size_x, uint8_t size_y, bool inverted);
void gfx_fill_box(const gfx_canvas_t *canvas, uint8_t pos_x, uint8_t pos_y, uint8_t size_x, uint8_t size_y, bool inverted);