Screen

Screen logging. More...

Collaboration diagram for Screen:

Detailed Description

Screen logging.

Data Structures
struct	log_screen_pos_t
	Represents a position on the screen in character coordinates. More...
struct	log_screen_line_t
	A single line in the screen buffer. More...
struct	log_screen_t
	The screen buffer. More...

Macros
#define	SCREEN_WRAP_INDENT   17
	Number of spaces to indent when a line wraps.
#define	SCREEN_LINE_MAX_LENGTH   (130)
	Maximum number of characters in a single line.
#define	SCREEN_LINE_STRIDE   (SCREEN_LINE_MAX_LENGTH * GLYPH_WIDTH)
	The stride of a screen line in pixels.

Functions
void	log_screen_init (const boot_gop_t *bootGop)
	Initialize the screen logging.
void	log_screen_clear (void)
	Clear the screen.
uint64_t	log_screen_get_width (void)
	Get screen width in characters.
uint64_t	log_screen_get_height (void)
	Get screen height in characters.
void	log_screen_write (const char *string, uint64_t length)
	Write a string to the screen.

Macro Definition Documentation

SCREEN_WRAP_INDENT

#define SCREEN_WRAP_INDENT   17

Number of spaces to indent when a line wraps.

Header length (15) + 2 for indentation

Definition at line 24 of file log_screen.h.

SCREEN_LINE_MAX_LENGTH

#define SCREEN_LINE_MAX_LENGTH   (130)

Maximum number of characters in a single line.

Definition at line 29 of file log_screen.h.

SCREEN_LINE_STRIDE

#define SCREEN_LINE_STRIDE   (SCREEN_LINE_MAX_LENGTH * GLYPH_WIDTH)

The stride of a screen line in pixels.

Definition at line 34 of file log_screen.h.

Function Documentation

log_screen_init()

void log_screen_init

(

const boot_gop_t *

bootGop

)

Initialize the screen logging.

Parameters

bootGop

Pointer to the bootloader-provided GOP information for screen logging.

Definition at line 83 of file log_screen.c.

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log_screen_clear()

void log_screen_clear

(

void

)

Clear the screen.

Definition at line 172 of file log_screen.c.

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log_screen_get_width()

uint64_t log_screen_get_width

(

void

)

Get screen width in characters.

Definition at line 194 of file log_screen.c.

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log_screen_get_height()

uint64_t log_screen_get_height

(

void

)

Get screen height in characters.

Definition at line 199 of file log_screen.c.

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log_screen_write()

void log_screen_write	(	const char *	string,
		uint64_t	length
	)

Write a string to the screen.

Parameters

screen	The screen state.
string	The string to write.
length	The length of the string.

Definition at line 204 of file log_screen.c.

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