src/mac/macnotfy.cpp

   1 /* -------------------------------------------------------------------------
   2  * Project: Mac Notifier Support
   3  * Name:    macnotfy.c
   4  * Author:  Stefan CSomor
   5  * Purpose: Mac Notifier main file
   6  * CVSID:   $Id$
   7  * -------------------------------------------------------------------------
   8  */
   9
  10 #include "wx/wx.h"
  11 #include "wx/mac/macnotfy.h"
  12
  13 const short kMaxEvents = 1000 ;
  14
  15 struct wxMacNotificationEvents
  16 {
  17         short top ;
  18         short bottom ;
  19
  20         wxMacNotificationProcPtr proc[kMaxEvents] ;
  21         unsigned long events[kMaxEvents] ;
  22         void* data[kMaxEvents] ;
  23 } ;
  24
  25 typedef struct wxMacNotificationEvents wxMacNotificationEvents ;
  26 wxMacNotificationEvents gMacNotificationEvents ;
  27
  28 ProcessSerialNumber gAppProcess ;
  29
  30 void wxMacWakeUp()
  31 {
  32         ProcessSerialNumber psn ;
  33         Boolean isSame ;
  34         psn.highLongOfPSN = 0 ;
  35         psn.lowLongOfPSN = kCurrentProcess ;
  36         SameProcess( &gAppProcess , &psn , &isSame ) ;
  37         if ( isSame )
  38         {
  39                 PostEvent( nullEvent , 0 ) ;
  40         }
  41         else
  42         {
  43                 WakeUpProcess( &gAppProcess ) ;
  44         }
  45 }
  46
  47 void wxMacCreateNotifierTable()
  48 {
  49         GetCurrentProcess(&gAppProcess);
  50         gMacNotificationEvents.top = 0 ;
  51         gMacNotificationEvents.bottom = 0 ;
  52         for ( int i = 0 ; i < kMaxEvents ; ++i )
  53         {
  54                 gMacNotificationEvents.proc[i] = NULL ;
  55                 gMacNotificationEvents.events[i] = NULL ;
  56                 gMacNotificationEvents.data[i] = NULL ;
  57         }
  58 }
  59
  60 void wxMacDestroyNotifierTable()
  61 {
  62         wxASSERT( gMacNotificationEvents.top == gMacNotificationEvents.bottom ) ;
  63 }
  64
  65 wxMacNotifierTableRef wxMacGetNotifierTable()
  66 {
  67         return (wxMacNotifierTableRef) &gMacNotificationEvents ;
  68 }
  69
  70 void wxMacAddEvent(
  71         wxMacNotifierTableRef table ,
  72         wxMacNotificationProcPtr handler ,
  73         unsigned long event ,
  74         void* data ,
  75         short wakeUp )
  76 {
  77         wxMacNotificationEvents *e = (wxMacNotificationEvents *) table ;
  78         /* this should be protected eventually */
  79         short index = e->top++ ;
  80
  81         if ( e->top == kMaxEvents )
  82                 e->top = 0 ;
  83
  84         e->proc[index] = handler ;
  85         e->events[index] = event ;
  86         e->data[index] = data ;
  87         if ( wakeUp )
  88                 wxMacWakeUp() ;
  89 }
  90
  91 bool gInProcessing = false ;
  92
  93 void wxMacRemoveAllNotifiersForData( wxMacNotifierTableRef table , void* data )
  94 {
  95         wxMacNotificationEvents *e = (wxMacNotificationEvents *) table ;
  96         /* this should be protected eventually */
  97         short index = e->bottom ;
  98
  99   while ( e->top != index )
 100   {
 101     if ( index == kMaxEvents )
 102       index = 0 ;
 103     if ( e->data[index] == data )
 104         e->data[index] = NULL ;
 105         index++ ;
 106   }
 107 }
 108
 109 void wxMacProcessNotifierEvents()
 110 {
 111 //  if ( gInProcessing )
 112 //      return ;
 113
 114   gInProcessing = true ;
 115   while ( gMacNotificationEvents.top != gMacNotificationEvents.bottom )
 116   {
 117     // consume event at bottom
 118         short index = gMacNotificationEvents.bottom++ ;
 119     if ( gMacNotificationEvents.bottom == kMaxEvents )
 120       gMacNotificationEvents.bottom = 0 ;
 121     void* data = gMacNotificationEvents.data[index] ;
 122     unsigned long event = gMacNotificationEvents.events[index] ;
 123         wxMacNotificationProcPtr handler =  gMacNotificationEvents.proc[index] ;
 124
 125         gMacNotificationEvents.data[index] = NULL ;
 126         gMacNotificationEvents.events[index] = NULL ;
 127         gMacNotificationEvents.proc[index]  = NULL ;
 128
 129         handler( event , data  ) ;
 130   }
 131   gInProcessing = false ;
 132 }
 133
 134 void wxMacProcessNotifierAndPendingEvents()
 135 {
 136         wxMacProcessNotifierEvents() ;
 137         wxTheApp->ProcessPendingEvents() ;
 138 }