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Files
xNBA/src/hci/mucurses/clear.c
Dan Lynch c29c868475 - implemented cursor retreat function (_wcursback) as a core function
- reimplemented cleaner wgetnstr
- fixed wdelch for use with _wcursback
2006-06-28 11:48:40 +00:00

89 lines
1.6 KiB
C

#include <curses.h>
#include "core.h"
#include "cursor.h"
/** @file
*
* MuCurses clearing functions
*
*/
/**
* 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 {
_wputch( win, (unsigned)' ', 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 ) {
_wputch( win, (unsigned)' ', 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 ) {
_wputch( win, (unsigned)' ', 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;
}