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