fb.h

 
#ifndef _FLANTERM_FB_H
#define _FLANTERM_FB_H 1
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdint.h>
#include <stddef.h>
#include <stdbool.h>
 
#include <flanterm/flanterm.h>
 
#include <unifont.h>
 
#define FLANTERM_FB_FONT_GLYPHS 256
 
extern const uint8_t builtin_font[];
extern const uint8_t thin_font[];

struct flanterm_fb_char {
    uint32_t c; 
    uint32_t fg; 
    uint32_t bg; 
};

struct flanterm_fb_queue_item {
    size_t x, y; 
    struct flanterm_fb_char c; 
};

struct flanterm_fb_context {
    struct flanterm_context term; 
 
    size_t font_width; 
    size_t font_height; 
    size_t glyph_width; 
    size_t glyph_height; 
 
    size_t font_scale_x; 
    size_t font_scale_y; 
 
    size_t offset_x, offset_y; 
 
    volatile uint32_t *framebuffer; 
    size_t pitch; 
    size_t width; 
    size_t height; 
    size_t bpp; 
 
    size_t font_bits_size; 
    uint8_t *font_bits; 
    size_t font_bool_size; 
    bool *font_bool; 
 
    uint32_t ansi_colours[8]; 
    uint32_t ansi_bright_colours[8]; 
    uint32_t default_fg, default_bg; 
    uint32_t default_fg_bright, default_bg_bright; 
 
#ifndef FLANTERM_FB_DISABLE_CANVAS
    size_t canvas_size; 
    uint32_t *canvas; 
#endif
 
    size_t grid_size; 
    size_t queue_size; 
    size_t map_size; 
 
    struct flanterm_fb_char *grid; 
 
    struct flanterm_fb_queue_item *queue; 
    size_t queue_i; 
 
    struct flanterm_fb_queue_item **map; 
 
    uint32_t text_fg; 
    uint32_t text_bg; 
    size_t cursor_x; 
    size_t cursor_y; 
 
    uint32_t saved_state_text_fg; 
    uint32_t saved_state_text_bg; 
    size_t saved_state_cursor_x; 
    size_t saved_state_cursor_y; 
 
    size_t old_cursor_x; 
    size_t old_cursor_y; 
};

struct flanterm_context *flanterm_fb_init(
    void *(*_malloc)(size_t),
    void (*_free)(void *, size_t),
    uint32_t *framebuffer, size_t width, size_t height, size_t pitch,
#ifndef FLANTERM_FB_DISABLE_CANVAS
    uint32_t *canvas,
#endif
    uint32_t *ansi_colours, uint32_t *ansi_bright_colours,
    uint32_t *default_bg, uint32_t *default_fg,
    uint32_t *default_bg_bright, uint32_t *default_fg_bright,
    void *font, size_t font_width, size_t font_height, size_t font_spacing,
    size_t font_scale_x, size_t font_scale_y,
    size_t margin
);
 
#ifndef FLANTERM_FB_DISABLE_BUMP_ALLOC
static inline struct flanterm_context *flanterm_fb_simple_init(
    uint32_t *framebuffer, size_t width, size_t height, size_t pitch
) {
    return flanterm_fb_init(
        NULL,
        NULL,
        framebuffer, width, height, pitch,
#ifndef FLANTERM_FB_DISABLE_CANVAS
        NULL,
#endif
        NULL, NULL,
        NULL, NULL,
        NULL, NULL,
        NULL, 0, 0, 1,
        1, 1,
        0
    );
}
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif