screen.h File Reference

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Data Structures
struct	terminal_screen
	The terminal's screen manages. More...

Functions
void	set_screen_dirty (struct terminal_screen *screen, int from, int to)
	Mark the screen ready for redrawing.
void	set_screen_dirty_image (struct terminal_screen *screen, int from, int to)
struct terminal_screen *	init_screen (void)
	Initializes a screen.
void	done_screen (struct terminal_screen *screen)
	Cleans up after the screen.
void	resize_screen (struct terminal *term, int x, int y)
	Update the size of the previous and the current screen image to hold x time y chars.
void	redraw_screen (struct terminal *term)
	Updates the terminal screen.
void	erase_screen (struct terminal *term)
	Erases the entire screen and moves the cursor to the upper left corner.
void	beep_terminal (struct terminal *term)
	Meeep!
struct string *	add_cursor_move_to_string (struct string *screen, int y, int x)
	Adds the term code for positioning the cursor at x and y to string.

Variables
struct module	terminal_screen_module

Function Documentation

add_cursor_move_to_string()

struct string * add_cursor_move_to_string	(	struct string *	screen,
		int	y,
		int	x )

Adds the term code for positioning the cursor at x and y to string.

The template term code is: "\033[<y>;<x>H"

beep_terminal()

void beep_terminal

(

struct terminal *

term

)

Meeep!

done_screen()

void done_screen

(

struct terminal_screen *

screen

)

Cleans up after the screen.

erase_screen()

void erase_screen

(

struct terminal *

term

)

Erases the entire screen and moves the cursor to the upper left corner.

init_screen()

struct terminal_screen * init_screen

(

void

)

Initializes a screen.

Returns NULL upon allocation failure.

redraw_screen()

void redraw_screen

(

struct terminal *

term

)

Updates the terminal screen.

Updating of the terminal screen is done by checking what needs to be updated using the last screen.

resize_screen()

void resize_screen	(	struct terminal *	term,
		int	width,
		int	height )

Update the size of the previous and the current screen image to hold x time y chars.

The two images are allocated in one chunk.

Todo

TODO: It seems allocation failure here is fatal. We should do something!

set_screen_dirty()

void set_screen_dirty	(	struct terminal_screen *	screen,
		int	from,
		int	to )

Mark the screen ready for redrawing.

set_screen_dirty_image()

void set_screen_dirty_image	(	struct terminal_screen *	screen,
		int	from,
		int	to )

Variable Documentation

terminal_screen_module

struct module terminal_screen_module

extern