include/vcl/timer.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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  15  *   License, Version 2.0 (the "License"); you may not use this file
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
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  19
  20 #ifndef INCLUDED_VCL_TIMER_HXX
  21 #define INCLUDED_VCL_TIMER_HXX
  22
  23 #include <tools/link.hxx>
  24 #include <vcl/task.hxx>
  25
  26 class VCL_DLLPUBLIC Timer : public Task
  27 {
  28     Link<Timer *, void> maInvokeHandler;   ///< Callback Link
  29     sal_uInt64          mnTimeout;
  30     const bool          mbAuto;
  31
  32 protected:
  33     virtual void SetDeletionFlags() override;
  34     virtual sal_uInt64 UpdateMinPeriod(
  35         sal_uInt64 nMinPeriod, sal_uInt64 nTimeNow ) const override;
  36
  37     Timer( bool bAuto, const sal_Char *pDebugName );
  38
  39 public:
  40     Timer( const sal_Char *pDebugName = nullptr );
  41     Timer( const Timer& rTimer );
  42     virtual ~Timer() override;
  43     Timer& operator=( const Timer& rTimer );
  44
  45     /**
  46      * Calls the maInvokeHandler with the parameter this.
  47      */
  48     virtual void    Invoke() override;
  49     /**
  50      * Calls the maInvokeHandler with the parameter.
  51      *
  52      * Convenience Invoke function, mainly used to call with nullptr.
  53      *
  54      * @param arg parameter for the Link::Call function
  55      */
  56     void            Invoke( Timer *arg );
  57     void            SetInvokeHandler( const Link<Timer *, void>& rLink ) { maInvokeHandler = rLink; }
  58     void            ClearInvokeHandler() { SetInvokeHandler( Link<Timer *, void>() ); }
  59
  60     void            SetTimeout( sal_uInt64 nTimeoutMs );
  61     sal_uInt64      GetTimeout() const { return mnTimeout; }
  62     /**
  63      * Activates the timer task
  64      *
  65      * If the timer is already active, it's reset!
  66      * Check with Task::IsActive() to prevent reset.
  67      */
  68     virtual void    Start() override;
  69 };
  70
  71 /// An auto-timer is a multi-shot timer re-emitting itself at
  72 /// interval until destroyed or stopped.
  73 class VCL_DLLPUBLIC AutoTimer : public Timer
  74 {
  75 public:
  76     AutoTimer( const sal_Char *pDebugName = nullptr );
  77 };
  78
  79 #endif // INCLUDED_VCL_TIMER_HXX
  80
  81 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */