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#ifndef _GFX_H_
#define _GFX_H_
#include <stdbool.h>
#include <stdint.h>
enum vga_color_t {
VGA_BLACK = 0,
VGA_BLUE = 1,
VGA_GREEN = 2,
VGA_CYAN = 3,
VGA_RED = 4,
VGA_MAGENTA = 5,
VGA_BROWN = 6,
VGA_LIGHT_GRAY = 7,
VGA_DARK_GRAY = 8,
VGA_LIGHT_BLUE = 9,
VGA_LIGHT_GREEN = 10,
VGA_LIGHT_CYAN = 11,
VGA_LIGHT_RED = 12,
VGA_LIGHT_MAGENTA = 13,
VGA_LIGHT_BROWN = 14,
VGA_WHITE = 15
};
#define VGA_WIDTH 80
#define VGA_HEIGHT 25
#define VGA_MAKE_COLOR(fg, bg) (fg | bg << 4)
#define VGA_MAKE_ENTRY(ch, col) (((uint16_t)ch)|((uint16_t)col<<8))
#define VGA_RGBPACK(r, g, b) ((r << 16)|(g << 8)|(b << 0))
#define GFX_WHITE 0xFFFFFF
#define GFX_BLACK 0x000000
struct vbe_info_t;
bool gfx_init(struct vbe_info_t *vbe_mode_info);
extern void (*gfx_drawpixel)(int x, int y);
/* transparent background */
void gfx_drawchar(int x, int y, int ch);
/* fills the background with bgcolor */
void gfx_drawchar_bg(int x, int y, int ch);
void gfx_putchar(int ch);
void gfx_puts(const char* str);
/* this function can be different from resolution to resolution */
extern void (*gfx_clear)(void);
void gfx_reset(void);
void gfx_set_foreground(uint32_t);
uint32_t gfx_get_foreground(void);
void gfx_set_background(uint32_t);
uint32_t gfx_get_background(void);
void (*gfx_hline)(int x1, int x2, int y);
void (*gfx_vline)(int y1, int y2, int x);
void gfx_fillrect(int x1, int y1, int w, int h);
void gfx_drawline(int x1, int y1, int x2, int y2);
/* these circle algorithms are very fast */
void gfx_drawcircle(int cx, int cy, int rad);
void gfx_fillcircle(int cx, int cy, int rad);
void gfx_filltriangle(int x1, int y1, int x2, int y2, int x3, int y3);
extern const uint16_t *gfx_width, *gfx_height;
/* this is _BYTES_ per pixel, NOT BITS per pixel! */
extern const uint8_t *gfx_bpp;
struct bitmap_t {
unsigned int w, h;
unsigned int bpp;
uint8_t *data;
};
void gfx_bitmap(int x, int y, const struct bitmap_t*);
void gfx_drawrect(int x, int y, int w, int h);
void gfx_set_doublebuffer(bool);
bool gfx_get_doublebuffer(void);
/* don't call this wo/ double buffering! */
void gfx_update(void);
void gfx_putsxy(int, int, const char*);
void gfx_putsxy_bg(int, int, const char*);
#endif
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