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#pragma once
#include <stdlib.h>
#include "ports.h"
class VGA : public Console {
public:
/* Hardware text mode color constants. */
enum vga_color : uint8_t {
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(vga_color fg = VGA_COLOR_BLACK, vga_color bg = VGA_COLOR_LIGHT_GREY, uint32_t address = 0xB8000);
~VGA() = default;
void set_color(vga_color fg, vga_color bg);
void enable_cursor(uint8_t start, uint8_t end);
void disable_cursor();
void update_cursor() override;
void write(char c) override;
void write(ViewIterator& iter) override;
struct Entry {
char c;
vga_color fg : 4;
vga_color bg : 4;
} __attribute((packed));
private:
const size_t max_columns = 80, max_rows = 25;
size_t column = 0, row = 0;
vga_color color_fg;
vga_color color_bg;
Entry* buffer;
// ports
vga_horizontal_total p_3d4;
vga_horizontal_display_enable_end p_3d5;
};
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