85 lines
3.0 KiB
Plaintext
85 lines
3.0 KiB
Plaintext
/*
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* Harbour Project source code:
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* ft_OnTick()
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*
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* Copyright 2011 Viktor Szakats (vszakats.net/harbour)
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* www - http://harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING.txt. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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THREAD STATIC t_bOnTick
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THREAD STATIC t_nTickInterval := 0
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THREAD STATIC t_nLastCheck := 0
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THREAD STATIC t_hIdle
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STATIC PROCEDURE __ft_OnTick()
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IF hb_MilliSeconds() >= ( t_nLastCheck + t_nTickInterval )
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t_nLastCheck := hb_MilliSeconds()
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Eval( t_bOnTick )
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ENDIF
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RETURN
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PROCEDURE ft_OnTick( bOnTick, nTickInterval )
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/* Harbour extension: Harbour will also accept function pointers */
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IF HB_ISEVALITEM( bOnTick )
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t_bOnTick := bOnTick
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IF HB_ISNUMERIC( nTickInterval )
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t_nTickInterval := ( 1 / 18.20648 ) * nTickInterval * 1000
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ENDIF
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t_nLastCheck := hb_MilliSeconds()
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IF Empty( t_hIdle )
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t_hIdle := hb_idleAdd( {|| __ft_OnTick() } )
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ENDIF
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ELSE
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t_bOnTick := NIL
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t_nTickInterval := 0
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IF ! Empty( t_hIdle )
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hb_idleDel( t_hIdle )
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t_hIdle := NIL
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ENDIF
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ENDIF
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RETURN
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