src/cocoa/timer.mm

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/cocoa/timer.mm
   3 // Purpose:     wxTimer for wxCocoa
   4 // Author:      Ryan Norton
   5 // Modified by: David Elliott
   6 // Created:     2005-02-04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Ryan Norton
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #if wxUSE_TIMER
  24
  25 #ifndef WX_PRECOMP
  26     #include "wx/timer.h"
  27 #endif
  28
  29 #include "wx/cocoa/autorelease.h"
  30
  31 #import <Foundation/NSTimer.h>
  32
  33 // ============================================================================
  34 // implementation
  35 // ============================================================================
  36
  37 IMPLEMENT_CLASS(wxTimer, wxTimerBase)
  38
  39 // ========================================================================
  40 // wxNSTimerData
  41 // ========================================================================
  42 @interface wxNSTimerData : NSObject
  43 {
  44     wxTimer* m_timer;
  45 }
  46
  47 - (id)init;
  48 - (id)initWithWxTimer:(wxTimer*)theTimer;
  49 - (wxTimer*)timer;
  50 - (void)onNotify:(NSTimer *)theTimer;
  51 @end // interface wxNSTimerData : NSObject
  52
  53 @implementation wxNSTimerData : NSObject
  54 - (id)init
  55 {
  56     if(!(self = [super init]))
  57         return nil;
  58     m_timer = NULL;
  59     return self;
  60 }
  61
  62 - (id)initWithWxTimer:(wxTimer*)theTimer;
  63 {
  64     if(!(self = [super init]))
  65         return nil;
  66     m_timer = theTimer;
  67     return self;
  68 }
  69
  70 - (wxTimer*)timer
  71 {
  72     return m_timer;
  73 }
  74
  75 - (void)onNotify:(NSTimer *)theTimer
  76 {
  77     m_timer->Notify(); //wxTimerBase method
  78 }
  79 @end
  80
  81 // ----------------------------------------------------------------------------
  82 // wxTimer
  83 // ----------------------------------------------------------------------------
  84
  85 wxTimer::~wxTimer()
  86 {
  87     Stop();
  88 }
  89
  90 void wxTimer::Init()
  91 {
  92     m_cocoaNSTimer = NULL;
  93 }
  94
  95 bool wxTimer::Start(int millisecs, bool oneShot)
  96 {
  97     Stop();
  98
  99     wxAutoNSAutoreleasePool thePool;
 100
 101     wxNSTimerData *timerData = [[wxNSTimerData alloc] initWithWxTimer:this];
 102     m_cocoaNSTimer =     [[NSTimer
 103             scheduledTimerWithTimeInterval: millisecs / 1000.0 //seconds
 104             target:     timerData
 105             selector:   @selector(onNotify:)
 106             userInfo:   nil
 107             repeats:    oneShot == false] retain];
 108     [timerData release];
 109
 110     return IsRunning();
 111 }
 112
 113 void wxTimer::Stop()
 114 {
 115     if (m_cocoaNSTimer)
 116     {
 117         // FIXME: Is this safe to do if !isValid ?
 118         [m_cocoaNSTimer invalidate];
 119         [m_cocoaNSTimer release];
 120         m_cocoaNSTimer = NULL;
 121     }
 122 }
 123
 124 bool wxTimer::IsRunning() const
 125 {
 126     return m_cocoaNSTimer != NULL && [m_cocoaNSTimer isValid];
 127 }
 128
 129 #endif // wxUSE_TIMER
 130