27,19 → 27,20 |
*/ |
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/** @addtogroup console |
* @{ |
* @{ |
*/ |
/** @file |
*/ |
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#ifndef __SCREENBUFFER_H__ |
#define __SCREENBUFFER_H__ |
#ifndef SCREENBUFFER_H__ |
#define SCREENBUFFER_H__ |
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#include <stdint.h> |
#include <sys/types.h> |
#include <bool.h> |
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#define DEFAULT_FOREGROUND 0x0 /**< default console foreground color */ |
#define DEFAULT_BACKGROUND 0xf0f0f0 /**< default console background color */ |
#define DEFAULT_FOREGROUND 0x0 /**< default console foreground color */ |
#define DEFAULT_BACKGROUND 0xf0f0f0 /**< default console background color */ |
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typedef struct { |
uint8_t style; |
52,8 → 53,8 |
} attr_idx_t; |
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typedef struct { |
uint32_t bg_color; /**< background color */ |
uint32_t fg_color; /**< foreground color */ |
uint32_t bg_color; /**< background color */ |
uint32_t fg_color; /**< foreground color */ |
} attr_rgb_t; |
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typedef struct { |
66,73 → 67,93 |
attr_style_t s; |
attr_idx_t i; |
attr_rgb_t r; |
} a; |
} a; |
} attrs_t; |
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/** One field on screen. It contain one character and its attributes. */ |
typedef struct { |
wchar_t character; /**< Character itself */ |
attrs_t attrs; /**< Character`s attributes */ |
wchar_t character; /**< Character itself */ |
attrs_t attrs; /**< Character attributes */ |
} keyfield_t; |
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/** Structure for buffering state of one virtual console. |
*/ |
typedef struct { |
keyfield_t *buffer; /**< Screen content - characters and their attributes. Used as a circular buffer. */ |
unsigned int size_x, size_y; /**< Number of columns and rows */ |
unsigned int position_x, position_y; /**< Coordinates of last printed character for determining cursor position */ |
attrs_t attrs; /**< Current attributes. */ |
unsigned int top_line; /**< Points to buffer[][] line that will be printed at screen as the first line */ |
unsigned char is_cursor_visible; /**< Cursor state - default is visible */ |
keyfield_t *buffer; /**< Screen content - characters and |
their attributes (used as a circular buffer) */ |
size_t size_x; /**< Number of columns */ |
size_t size_y; /**< Number of rows */ |
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/** Coordinates of last printed character for determining cursor position */ |
size_t position_x; |
size_t position_y; |
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attrs_t attrs; /**< Current attributes. */ |
size_t top_line; /**< Points to buffer[][] line that will |
be printed at screen as the first line */ |
bool is_cursor_visible; /**< Cursor state - default is visible */ |
} screenbuffer_t; |
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/** Returns keyfield for position on screen. Screenbuffer->buffer is cyclic buffer so we must couted in index of the topmost line. |
* @param scr screenbuffer |
* @param x position on screen |
* @param y position on screen |
* @return keyfield structure with character and its attributes on x,y |
/** Returns keyfield for position on screen |
* |
* Screenbuffer->buffer is cyclic buffer so we |
* must couted in index of the topmost line. |
* |
* @param scr Screenbuffer |
* @param x Position on screen |
* @param y Position on screen |
* |
* @return Keyfield structure with character and its attributes on x, y |
* |
*/ |
static inline keyfield_t *get_field_at(screenbuffer_t *scr, unsigned int x, unsigned int y) |
static inline keyfield_t *get_field_at(screenbuffer_t *scr, size_t x, size_t y) |
{ |
return scr->buffer + x + ((y + scr->top_line) % scr->size_y) * scr->size_x; |
} |
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/** Compares two sets of attributes. |
* @param s1 first style |
* @param s2 second style |
* @return nonzero on equality |
* |
* @param s1 First style |
* @param s2 Second style |
* |
* @return Nonzero on equality |
* |
*/ |
static inline int attrs_same(attrs_t a1, attrs_t a2) |
{ |
if (a1.t != a2.t) return 0; |
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if (a1.t != a2.t) |
return 0; |
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switch (a1.t) { |
case at_style: return a1.a.s.style == a2.a.s.style; |
case at_idx: return a1.a.i.fg_color == a2.a.i.fg_color && |
a1.a.i.bg_color == a2.a.i.bg_color && |
a1.a.i.flags == a2.a.i.flags; |
case at_rgb: return a1.a.r.fg_color == a2.a.r.fg_color && |
a1.a.r.bg_color == a2.a.r.bg_color; |
case at_style: |
return (a1.a.s.style == a2.a.s.style); |
case at_idx: |
return (a1.a.i.fg_color == a2.a.i.fg_color) |
&& (a1.a.i.bg_color == a2.a.i.bg_color) |
&& (a1.a.i.flags == a2.a.i.flags); |
case at_rgb: |
return (a1.a.r.fg_color == a2.a.r.fg_color) |
&& (a1.a.r.bg_color == a2.a.r.bg_color); |
} |
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return 0; |
} |
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void screenbuffer_putchar(screenbuffer_t *scr, wchar_t c); |
screenbuffer_t *screenbuffer_init(screenbuffer_t *scr, int size_x, int size_y); |
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); |
void screenbuffer_clear_line(screenbuffer_t *scr, unsigned int line); |
void screenbuffer_clear_line(screenbuffer_t *scr, size_t line); |
void screenbuffer_copy_buffer(screenbuffer_t *scr, keyfield_t *dest); |
void screenbuffer_goto(screenbuffer_t *scr, unsigned int x, unsigned int y); |
void screenbuffer_set_style(screenbuffer_t *scr, int style); |
void screenbuffer_set_color(screenbuffer_t *scr, unsigned int fg_color, |
unsigned int bg_color, unsigned int attr); |
void screenbuffer_set_rgb_color(screenbuffer_t *scr, unsigned int fg_color, |
unsigned int bg_color); |
void screenbuffer_goto(screenbuffer_t *scr, size_t x, size_t y); |
void screenbuffer_set_style(screenbuffer_t *scr, uint8_t style); |
void screenbuffer_set_color(screenbuffer_t *scr, uint8_t fg_color, |
uint8_t bg_color, uint8_t attr); |
void screenbuffer_set_rgb_color(screenbuffer_t *scr, uint32_t fg_color, |
uint32_t bg_color); |
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#endif |
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/** @} |
*/ |
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