TOPIC:

public int vFind(int dir)
	{
		if( m_pages == null ) return -1;
		int ret = m_finder.find_prepare(dir);
		if( ret == 1 )
		{
			if( m_listener != null )
				m_listener.OnPDFFound( true );
			vFindGoto();
			vCenterPage(m_finder.find_get_page());
			return 0;//succeeded
		}
		if( ret == 0 )
		{
			if( m_listener != null )
				m_listener.OnPDFFound( false );
			return -1;//failed
		}
		m_thread.start_find( m_finder );//need thread operation.
		return 1;
	}

public void vCenterPage( int pageno )
	{
		if( m_pages == null || m_doc == null || m_w <= 0 || m_h <= 0 ) return;
		m_scroller.forceFinished(true);
		m_scroller.abortAnimation();
		int left = m_pages[pageno].m_x - m_page_gap/2;
		int top = m_pages[pageno].m_y - m_page_gap/2;
		int w = m_pages[pageno].m_w + m_page_gap;
		int h = m_pages[pageno].m_h + m_page_gap;
		int x = left + (w - m_w)/2;
		int y = top + (h - m_h)/2;
		int oldx = m_scroller.getCurrX();
		int oldy = m_scroller.getCurrY();
		m_scroller.startScroll(oldx, oldy, x - oldx, y - oldy);
	}