harbour-core/harbour/contrib/hbct/keysec.prg

/*
 *  $Id$
 */

/*
 * Harbour Project source code:
 *   CT3 Miscellaneous functions: - KEYSEC()
 *
 * Copyright 2005 Pavel Tsarenko - <tpe2@mail.ru>
 * www - http://harbour-project.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
 *
 * As a special exception, the Harbour Project gives permission for
 * additional uses of the text contained in its release of Harbour.
 *
 * The exception is that, if you link the Harbour libraries with other
 * files to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the Harbour library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the Harbour
 * Project under the name Harbour.  If you copy code from other
 * Harbour Project or Free Software Foundation releases into a copy of
 * Harbour, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
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 * If you write modifications of your own for Harbour, it is your choice
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 *
 */

THREAD STATIC t_hIdle

FUNCTION KeySec( nKey, nTime, nCounter, lMode )
   LOCAL nSeconds

   IF t_hIdle != NIL
      hb_idleDel( t_hIdle )
      t_hIdle := NIL
   ENDIF

   IF HB_ISNUMERIC( nKey )
      IF ! HB_ISNUMERIC( nTime )
         nTime := 0
      ELSEIF nTime < 0
         nTime := -nTime / 18.2
      ENDIF
      nTime *= 1000
      IF ! HB_ISNUMERIC( nCounter )
         nCounter := 1
      ENDIF
      IF ! HB_ISLOGICAL( lMode )
         lMode := .F.
      ENDIF

      nSeconds := hb_milliSeconds()
      t_hIdle := hb_idleAdd( {|| doKeySec( nKey, nTime, lMode, ;
                                           @nCounter, @nSeconds ) } )
      RETURN .T.
   ENDIF

   RETURN .F.

STATIC PROCEDURE doKeySec( nKey, nTime, lMode, nCounter, nSeconds )
   LOCAL nSec := hb_milliSeconds()

   IF lMode .AND. ! Empty( NextKey() )
      nSeconds := nSec
   ELSEIF nCounter != 0 .AND. nSec - nSeconds >= nTime
      hb_keyPut( nKey )
      IF nCounter > 0
         nCounter--
      ENDIF
      IF nCounter == 0
         hb_idleDel( t_hIdle )
         t_hIdle := NIL
      ELSE
         nSeconds := nSec
      ENDIF
   ENDIF

   RETURN