src/osx/cocoa/evtloop.mm

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/cocoa/evtloop.mm
   3 // Purpose:     implementation of wxEventLoop for OS X
   4 // Author:      Vadim Zeitlin, Stefan Csomor
   5 // Modified by:
   6 // Created:     2006-01-12
   7 // RCS-ID:      $Id: evtloop.cpp 54845 2008-07-30 14:52:41Z SC $
   8 // Copyright:   (c) 2006 Vadim Zeitlin <vadim@wxwindows.org>
   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 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/evtloop.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/app.h"
  31 #endif // WX_PRECOMP
  32
  33 #include "wx/log.h"
  34
  35 #include "wx/osx/private.h"
  36
  37 // ============================================================================
  38 // wxEventLoop implementation
  39 // ============================================================================
  40
  41 /*
  42 static int CalculateNSEventMaskFromEventCategory(wxEventCategory cat)
  43 {
  44         NSLeftMouseDownMask     |
  45         NSLeftMouseUpMask |
  46         NSRightMouseDownMask |
  47         NSRightMouseUpMask              = 1 << NSRightMouseUp,
  48         NSMouseMovedMask                = 1 << NSMouseMoved,
  49         NSLeftMouseDraggedMask          = 1 << NSLeftMouseDragged,
  50         NSRightMouseDraggedMask         = 1 << NSRightMouseDragged,
  51         NSMouseEnteredMask              = 1 << NSMouseEntered,
  52         NSMouseExitedMask               = 1 << NSMouseExited,
  53         NSScrollWheelMask               = 1 << NSScrollWheel,
  54 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4
  55         NSTabletPointMask               = 1 << NSTabletPoint,
  56         NSTabletProximityMask           = 1 << NSTabletProximity,
  57 #endif
  58         NSOtherMouseDownMask            = 1 << NSOtherMouseDown,
  59         NSOtherMouseUpMask              = 1 << NSOtherMouseUp,
  60         NSOtherMouseDraggedMask         = 1 << NSOtherMouseDragged,
  61
  62
  63
  64         NSKeyDownMask                   = 1 << NSKeyDown,
  65         NSKeyUpMask                     = 1 << NSKeyUp,
  66         NSFlagsChangedMask              = 1 << NSFlagsChanged,
  67
  68         NSAppKitDefinedMask             = 1 << NSAppKitDefined,
  69         NSSystemDefinedMask             = 1 << NSSystemDefined,
  70         NSApplicationDefinedMask        = 1 << NSApplicationDefined,
  71         NSPeriodicMask                  = 1 << NSPeriodic,
  72         NSCursorUpdateMask              = 1 << NSCursorUpdate,
  73
  74         NSAnyEventMask                  = 0xffffffffU
  75 }
  76 */
  77
  78 wxGUIEventLoop::wxGUIEventLoop()
  79 {
  80     m_sleepTime = 0.0;
  81 }
  82
  83 void wxGUIEventLoop::WakeUp()
  84 {
  85     extern void wxMacWakeUp();
  86
  87     wxMacWakeUp();
  88 }
  89
  90 CFRunLoopRef wxGUIEventLoop::CFGetCurrentRunLoop() const
  91 {
  92     NSRunLoop* nsloop = [NSRunLoop currentRunLoop];
  93     return [nsloop getCFRunLoop];
  94 }
  95
  96 //-----------------------------------------------------------------------------
  97 // events dispatch and loop handling
  98 //-----------------------------------------------------------------------------
  99
 100 bool wxGUIEventLoop::Pending() const
 101 {
 102     wxMacAutoreleasePool autoreleasepool;
 103     // a pointer to the event is returned if there is one, or nil if not
 104     return [[NSApplication sharedApplication]
 105             nextEventMatchingMask: NSAnyEventMask
 106             untilDate: nil
 107             inMode: NSDefaultRunLoopMode
 108             dequeue: NO];
 109 }
 110
 111 bool wxGUIEventLoop::Dispatch()
 112 {
 113     if ( !wxTheApp )
 114         return false;
 115
 116     wxMacAutoreleasePool autoreleasepool;
 117
 118     if(NSEvent *event = [NSApp
 119                 nextEventMatchingMask:NSAnyEventMask
 120                 untilDate:[NSDate dateWithTimeIntervalSinceNow: m_sleepTime]
 121                 inMode:NSDefaultRunLoopMode
 122                 dequeue: YES])
 123     {
 124         m_sleepTime = 0.0;
 125         [NSApp sendEvent: event];
 126     }
 127     else
 128     {
 129         if (wxTheApp)
 130             wxTheApp->ProcessPendingEvents();
 131
 132         if ( wxTheApp->ProcessIdle() )
 133             m_sleepTime = 0.0 ;
 134         else
 135         {
 136             m_sleepTime = 1.0;
 137 #if wxUSE_THREADS
 138             wxMutexGuiLeave();
 139             wxMilliSleep(20);
 140             wxMutexGuiEnter();
 141 #endif
 142         }
 143     }
 144
 145     return true;
 146 }
 147
 148 bool wxGUIEventLoop::YieldFor(long eventsToProcess)
 149 {
 150 #if wxUSE_THREADS
 151     // Yielding from a non-gui thread needs to bail out, otherwise we end up
 152     // possibly sending events in the thread too.
 153     if ( !wxThread::IsMain() )
 154     {
 155         return true;
 156     }
 157 #endif // wxUSE_THREADS
 158
 159     m_isInsideYield = true;
 160     m_eventsToProcessInsideYield = eventsToProcess;
 161
 162 #if wxUSE_LOG
 163     // disable log flushing from here because a call to wxYield() shouldn't
 164     // normally result in message boxes popping up &c
 165     wxLog::Suspend();
 166 #endif // wxUSE_LOG
 167
 168     // process all pending events:
 169     while ( Pending() )
 170         Dispatch();
 171
 172     // it's necessary to call ProcessIdle() to update the frames sizes which
 173     // might have been changed (it also will update other things set from
 174     // OnUpdateUI() which is a nice (and desired) side effect)
 175     while ( ProcessIdle() ) {}
 176
 177     // if there are pending events, we must process them.
 178     if (wxTheApp)
 179         wxTheApp->ProcessPendingEvents();
 180
 181 #if wxUSE_LOG
 182     wxLog::Resume();
 183 #endif // wxUSE_LOG
 184     m_isInsideYield = false;
 185
 186     return true;
 187 }
 188
 189 int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
 190 {
 191     wxMacAutoreleasePool autoreleasepool;
 192
 193     NSEvent *event = [NSApp
 194                 nextEventMatchingMask:NSAnyEventMask
 195                 untilDate:[NSDate dateWithTimeIntervalSinceNow: timeout/1000]
 196                 inMode:NSDefaultRunLoopMode
 197                 dequeue: YES];
 198     if ( !event )
 199         return -1;
 200
 201     [NSApp sendEvent: event];
 202
 203     return true;
 204 }