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#include <curses.h>
#include "mucurses.h"
#include "cursor.h"
/** @file
*
* MuCurses clearing functions
*
*/
FILE_LICENCE ( GPL2_OR_LATER );
/**
* Clear a window to the bottom from current cursor position
*
* @v *win subject window
* @ret rc return status code
*/
int wclrtobot ( WINDOW *win ) {
struct cursor_pos pos;
_store_curs_pos( win, &pos );
do {
_wputc( win, ' ', WRAP );
} while ( win->curs_y + win->curs_x );
_restore_curs_pos( win, &pos );
return OK;
}
/**
* Clear a window to the end of the current line
*
* @v *win subject window
* @ret rc return status code
*/
int wclrtoeol ( WINDOW *win ) {
struct cursor_pos pos;
_store_curs_pos( win, &pos );
while ( ( win->curs_y - pos.y ) == 0 ) {
_wputc( win, ' ', WRAP );
}
_restore_curs_pos( win, &pos );
return OK;
}
/**
* Delete character under the cursor in a window
*
* @v *win subject window
* @ret rc return status code
*/
int wdelch ( WINDOW *win ) {
_wputc( win, ' ', NOWRAP );
_wcursback( win );
return OK;
}
/**
* Delete line under a window's cursor
*
* @v *win subject window
* @ret rc return status code
*/
int wdeleteln ( WINDOW *win ) {
struct cursor_pos pos;
_store_curs_pos( win, &pos );
/* let's just set the cursor to the beginning of the line and
let wclrtoeol do the work :) */
wmove( win, win->curs_y, 0 );
wclrtoeol( win );
_restore_curs_pos( win, &pos );
return OK;
}
/**
* Completely clear a window
*
* @v *win subject window
* @ret rc return status code
*/
int werase ( WINDOW *win ) {
wmove( win, 0, 0 );
wclrtobot( win );
return OK;
}
/**
* Completely clear the screen
*
* @ret rc return status code
*/
int erase ( void ) {
stdscr->scr->erase( stdscr->scr, stdscr->attrs );
return OK;
}
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