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         if (wxTheApp)
 125             wxTheApp->MacSetCurrentEvent(event, NULL);
 126         m_sleepTime = 0.0;
 127         [NSApp sendEvent: event];
 128     }
 129     else
 130     {
 131         if (wxTheApp)
 132             wxTheApp->ProcessPendingEvents();
 133
 134         if ( wxTheApp->ProcessIdle() )
 135             m_sleepTime = 0.0 ;
 136         else
 137         {
 138             m_sleepTime = 1.0;
 139 #if wxUSE_THREADS
 140             wxMutexGuiLeave();
 141             wxMilliSleep(20);
 142             wxMutexGuiEnter();
 143 #endif
 144         }
 145     }
 146
 147     return true;
 148 }
 149
 150 bool wxGUIEventLoop::YieldFor(long eventsToProcess)
 151 {
 152 #if wxUSE_THREADS
 153     // Yielding from a non-gui thread needs to bail out, otherwise we end up
 154     // possibly sending events in the thread too.
 155     if ( !wxThread::IsMain() )
 156     {
 157         return true;
 158     }
 159 #endif // wxUSE_THREADS
 160
 161     m_isInsideYield = true;
 162     m_eventsToProcessInsideYield = eventsToProcess;
 163
 164 #if wxUSE_LOG
 165     // disable log flushing from here because a call to wxYield() shouldn't
 166     // normally result in message boxes popping up &c
 167     wxLog::Suspend();
 168 #endif // wxUSE_LOG
 169
 170     // process all pending events:
 171     while ( Pending() )
 172         Dispatch();
 173
 174     // it's necessary to call ProcessIdle() to update the frames sizes which
 175     // might have been changed (it also will update other things set from
 176     // OnUpdateUI() which is a nice (and desired) side effect)
 177     while ( ProcessIdle() ) {}
 178
 179     // if there are pending events, we must process them.
 180     if (wxTheApp)
 181         wxTheApp->ProcessPendingEvents();
 182
 183 #if wxUSE_LOG
 184     wxLog::Resume();
 185 #endif // wxUSE_LOG
 186     m_isInsideYield = false;
 187
 188     return true;
 189 }
 190
 191 int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
 192 {
 193     wxMacAutoreleasePool autoreleasepool;
 194
 195     NSEvent *event = [NSApp
 196                 nextEventMatchingMask:NSAnyEventMask
 197                 untilDate:[NSDate dateWithTimeIntervalSinceNow: timeout/1000]
 198                 inMode:NSDefaultRunLoopMode
 199                 dequeue: YES];
 200     if ( !event )
 201         return -1;
 202
 203     [NSApp sendEvent: event];
 204
 205     return true;
 206 }