io_cls.c

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/* console CLS statement */

#include "../fb.h"
#include "fb_private_console.h"

void fb_ConsoleClear( int mode )
{
        int start, end, i;
        
        if (!__fb_con.inited || mode==1)
                return;

        BG_LOCK( );
        fb_hRecheckConsoleSize( );
        BG_UNLOCK( );

        fb_ConsoleGetView(&start, &end);
        if ((mode != 2) && (mode != 0xFFFF0000)) {
                start = 1;
                end = fb_ConsoleGetMaxRow();
        }
        if (start > __fb_con.h)
                start = __fb_con.h;
        if (end > __fb_con.h)
                end = __fb_con.h;
        for (i = start; i <= end; i++) {
                memset(__fb_con.char_buffer + ((i - 1) * __fb_con.w), ' ', __fb_con.w);
                memset(__fb_con.attr_buffer + ((i - 1) * __fb_con.w), __fb_con.fg_color | (__fb_con.bg_color << 4), __fb_con.w);
                fb_hTermOut(SEQ_LOCATE, 0, i-1);
                fb_hTermOut(SEQ_CLEOL, 0, 0);
        }
        fb_hTermOut(SEQ_LOCATE, 0, start-1);
        __fb_con.cur_y = start;
        __fb_con.cur_x = 1;
}