static void FilePos( a_window *wnd, int pos )
{
unsigned long range;
file_window *file = WndFile( wnd );
if( pos < 0 )
pos = 0;
if( file->viewhndl == NULL ) {
if( pos+WndRows(wnd) > file->eof )
return;
WndSetTop( wnd, pos );
return;
}
if( FReadLine( file->viewhndl, pos+WndRows(wnd), 0, TxtBuff, TXT_LEN ) < 0 ) {
pos = FCurrLine( file->viewhndl ) - WndRows(wnd) - 1;
if( pos < 0 ) {
pos = 0;
}
}
WndSetTop( wnd, pos );
if( pos >= file->rows ) {
file->rows = pos+1;
file->rows_offset = FLastOffset( file->viewhndl );
}
if( file->rows == 0 )
file->rows = 1;
if( file->rows_offset == 0 ) {
range = file->size;
} else {
range = file->size * file->rows / file->rows_offset;
}
WndSetVScrollRange( wnd, range );
WndSetThumbPos( wnd, pos );
}
extern int W5Scroll( a_window *wnd, int lines )
{
int old_top;
int new_top;
old_top = WndTop( wnd );
new_top = old_top + lines;
if( new_top >= NUM_ROWS ) new_top = NUM_ROWS-1;
if( new_top < 0 ) new_top = 0;
WndSetTop( wnd, new_top );
WndSetVScrollRange( wnd, WndRows( wnd ) + NUM_ROWS - 1 );
WndSetThumbPos( wnd, new_top );
return( new_top - old_top );
}
