log_screen.h

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#pragma once
 
#include <kernel/config.h>
#include <kernel/log/glyphs.h>
#include <kernel/utils/ring.h>
 
#include <boot/boot_info.h>
 
#include <stdint.h>
 
#define SCREEN_WRAP_INDENT 4
 
#define SCREEN_LINE_MAX_LENGTH (130)
 
#define SCREEN_LINE_STRIDE (SCREEN_LINE_MAX_LENGTH * GLYPH_WIDTH)
 
typedef struct
{
    uint64_t x;
    uint64_t y;
} log_screen_pos_t;
 
typedef struct
{
    uint64_t length; 
    uint32_t pixels[GLYPH_HEIGHT * SCREEN_LINE_STRIDE]; 
} log_screen_line_t;
 
typedef struct
{
    uint64_t width;          
    uint64_t height;         
    uint64_t firstLineIndex; 
    log_screen_pos_t
        invalidStart;            
    log_screen_pos_t invalidEnd; 
    log_screen_line_t lines[CONFIG_SCREEN_MAX_LINES]; 
} log_screen_t;
 
void log_screen_init(const boot_gop_t* bootGop);
 
void log_screen_clear(void);
 
uint64_t log_screen_get_width(void);
 
uint64_t log_screen_get_height(void);
 
void log_screen_write(const char* string, uint64_t length);