#ifndef VGA_H
#define VGA_H

#include "port.h"

enum {
	VGA_DEFAULT_RES_X = 80,
	VGA_DEFAULT_RES_Y = 25
};

typedef enum {
	VGA_COLOR_BLACK = 0,
	VGA_COLOR_BLUE = 1,
	VGA_COLOR_GREEN = 2,
	VGA_COLOR_CYAN = 3,
	VGA_COLOR_RED = 4,
	VGA_COLOR_MAGENTA = 5,
	VGA_COLOR_BROWN = 6,
	VGA_COLOR_LIGHT_GREY = 7,
	VGA_COLOR_DARK_GREY = 8,
	VGA_COLOR_LIGHT_BLUE = 9,
	VGA_COLOR_LIGHT_GREEN = 10,
	VGA_COLOR_LIGHT_CYAN = 11,
	VGA_COLOR_LIGHT_RED = 12,
	VGA_COLOR_LIGHT_MAGENTA = 13,
	VGA_COLOR_LIGHT_BROWN = 14,
	VGA_COLOR_WHITE = 15
} vga_color_t;

typedef struct vga_t {
	int res_x;	// resolution, default 80
	int res_y;	// resolution, default 25
	int cursor_x;	// current cursor position X
	int cursor_y;	// current cursor position Y
	vga_color_t color;
	vga_color_t background_color;
	port8_t crtc_misc_port;
	port8_t crtc_index_port;
	port8_t crtc_data_port;
} vga_t;

void vga_init( vga_t *vga );
void vga_clear_screen( vga_t *vga );
void vga_set_cursor( vga_t *vga, const int x, const int y );
void vga_set_cursor_from_hardware( vga_t *vga );
void vga_set_cursor_on_hardware( vga_t *vga );
int vga_get_cursor_x( vga_t *vga );
int vga_get_cursor_y( vga_t *vga );
void vga_set_color( vga_t *vga, const vga_color_t color );
void vga_set_background_color( vga_t *vga, const vga_color_t color );
void vga_put_char_at( vga_t *vga, const int x, const int y, const char c );
void vga_put_string_at( vga_t *vga, const int x, const int y, const char *s );
void vga_put_char( vga_t *vga, const char c );
void vga_put_string( vga_t *vga, const char *s );
void vga_put_hex( vga_t *vga, const uint32_t v );
void vga_put_newline( vga_t *vga );
 
#endif /* VGA_H */