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#ifndef SCREENBUFFER_H__
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#ifndef SCREENBUFFER_H__
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#define SCREENBUFFER_H__
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#define SCREENBUFFER_H__
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#include <stdint.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/types.h>
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#include <bool.h>
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#define DEFAULT_FOREGROUND 0x0       /**< default console foreground color */
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#define DEFAULT_FOREGROUND  0x0       /**< default console foreground color */
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#define DEFAULT_BACKGROUND 0xf0f0f0  /**< default console background color */
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#define DEFAULT_BACKGROUND  0xf0f0f0  /**< default console background color */
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typedef struct {
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typedef struct {
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    uint8_t style;
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    uint8_t style;
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} attr_style_t;
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} attr_style_t;
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} attrs_t;
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} attrs_t;
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/** One field on screen. It contain one character and its attributes. */
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/** One field on screen. It contain one character and its attributes. */
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typedef struct {
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typedef struct {
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    wchar_t character;  /**< Character itself */
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    wchar_t character;  /**< Character itself */
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    attrs_t attrs;      /**< Character`s attributes */
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    attrs_t attrs;      /**< Character attributes */
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} keyfield_t;
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} keyfield_t;
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/** Structure for buffering state of one virtual console.
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/** Structure for buffering state of one virtual console.
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 */
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 */
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typedef struct {
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typedef struct {
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    keyfield_t *buffer;               /**< Screen content - characters and
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    keyfield_t *buffer;      /**< Screen content - characters and
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                                           their attributes (used as a circular buffer) */
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                                  their attributes (used as a circular buffer) */
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    unsigned int size_x;              /**< Number of columns  */
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    size_t size_x;           /**< Number of columns  */
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    unsigned int size_y;              /**< Number of rows */
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    size_t size_y;           /**< Number of rows */
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    /** Coordinates of last printed character for determining cursor position */
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    /** Coordinates of last printed character for determining cursor position */
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    unsigned int position_x;
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    size_t position_x;
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    unsigned int position_y;
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    size_t position_y;
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    attrs_t attrs;                    /**< Current attributes. */
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    attrs_t attrs;           /**< Current attributes. */
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    unsigned int top_line;            /**< Points to buffer[][] line that will
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    size_t top_line;         /**< Points to buffer[][] line that will
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                                           be printed at screen as the first line */
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                                  be printed at screen as the first line */
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    unsigned char is_cursor_visible;  /**< Cursor state - default is visible */
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    bool is_cursor_visible;  /**< Cursor state - default is visible */
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} screenbuffer_t;
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} screenbuffer_t;
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/** Returns keyfield for position on screen
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/** Returns keyfield for position on screen
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 *
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 *
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 * Screenbuffer->buffer is cyclic buffer so we
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 * Screenbuffer->buffer is cyclic buffer so we
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 * @param y   Position on screen
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 * @param y   Position on screen
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 *
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 *
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 * @return Keyfield structure with character and its attributes on x, y
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 * @return Keyfield structure with character and its attributes on x, y
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 *
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 *
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 */
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 */
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static inline keyfield_t *get_field_at(screenbuffer_t *scr, unsigned int x, unsigned int y)
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static inline keyfield_t *get_field_at(screenbuffer_t *scr, size_t x, size_t y)
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{
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{
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    return scr->buffer + x + ((y + scr->top_line) % scr->size_y) * scr->size_x;
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    return scr->buffer + x + ((y + scr->top_line) % scr->size_y) * scr->size_x;
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}
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}
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/** Compares two sets of attributes.
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/** Compares two sets of attributes.
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    }
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    }
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}
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}
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void screenbuffer_putchar(screenbuffer_t *scr, wchar_t c);
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void screenbuffer_putchar(screenbuffer_t *scr, wchar_t c);
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screenbuffer_t *screenbuffer_init(screenbuffer_t *scr, int size_x, int size_y);
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screenbuffer_t *screenbuffer_init(screenbuffer_t *scr, size_t size_x, size_t size_y);
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void screenbuffer_clear(screenbuffer_t *scr);
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void screenbuffer_clear(screenbuffer_t *scr);
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void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line);
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void screenbuffer_clear_line(screenbuffer_t *scr, size_t line);
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void screenbuffer_copy_buffer(screenbuffer_t *scr, keyfield_t *dest);
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void screenbuffer_copy_buffer(screenbuffer_t *scr, keyfield_t *dest);
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void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y);
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void screenbuffer_goto(screenbuffer_t *scr, size_t x, size_t y);
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void screenbuffer_set_style(screenbuffer_t *scr, int style);
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void screenbuffer_set_style(screenbuffer_t *scr, uint8_t style);
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void screenbuffer_set_color(screenbuffer_t *scr, unsigned int fg_color,
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void screenbuffer_set_color(screenbuffer_t *scr, uint8_t fg_color,
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    unsigned int bg_color, unsigned int attr);
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    uint8_t bg_color, uint8_t attr);
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void screenbuffer_set_rgb_color(screenbuffer_t *scr, unsigned int fg_color,
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void screenbuffer_set_rgb_color(screenbuffer_t *scr, uint32_t fg_color,
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    unsigned int bg_color);
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    uint32_t bg_color);
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#endif
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#endif
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/** @}
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/** @}
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 */
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 */