44 lines
1.6 KiB
C
44 lines
1.6 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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// compatibility for adafruit fonts
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#ifndef PROGMEM
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#define PROGMEM
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#endif
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typedef struct {
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uint16_t bitmapOffset;
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uint8_t width, height;
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uint8_t xAdvance;
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int8_t xOffset, yOffset;
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} GFXglyph;
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typedef struct {
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const uint8_t *bitmap;
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const GFXglyph *glyph;
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uint8_t first, last;
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uint8_t yAdvance;
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} GFXfont;
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/**
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* @brief Canvas struct for the gfx library
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* Functions take the context and x,y coordinates of a pixel
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*
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* @param ctx any context that the draw/clear functions might need, ie display device
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* @param draw_pixel_callback function that gets called to draw a pixel
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* @param clear_pixel_callback function that gets called to clear a pixel
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*/
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typedef struct {
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void (*draw_pixel_callback)(void *ctx, uint8_t x, uint8_t y);
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void (*clear_pixel_callback)(void *ctx, uint8_t x, uint8_t y);
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void *ctx;
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} gfx_canvas_t;
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int16_t gfx_string_width(const GFXfont *f, const char *s);
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int16_t gfx_draw_string(const gfx_canvas_t *canvas, const GFXfont* f, int16_t x, int16_t y, const char *s, bool inverted);
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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);
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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);
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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);
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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);
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