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 bool wxGUIEventLoop::Pending() const
  91 {
  92     wxMacAutoreleasePool autoreleasepool;
  93     // a pointer to the event is returned if there is one, or nil if not
  94     return [[NSApplication sharedApplication]
  95             nextEventMatchingMask: NSAnyEventMask
  96             untilDate: nil
  97             inMode: NSDefaultRunLoopMode
  98             dequeue: NO];
  99 }
 100
 101 bool wxGUIEventLoop::Dispatch()
 102 {
 103     if ( !wxTheApp )
 104         return false;
 105
 106     wxMacAutoreleasePool autoreleasepool;
 107
 108     if(NSEvent *event = [NSApp
 109                 nextEventMatchingMask:NSAnyEventMask
 110                 untilDate:[NSDate dateWithTimeIntervalSinceNow: m_sleepTime]
 111                 inMode:NSDefaultRunLoopMode
 112                 dequeue: YES])
 113     {
 114         m_sleepTime = 0.0;
 115         [NSApp sendEvent: event];
 116     }
 117     else
 118     {
 119         if (wxTheApp)
 120             wxTheApp->ProcessPendingEvents();
 121
 122         if ( wxTheApp->ProcessIdle() )
 123             m_sleepTime = 0.0 ;
 124         else
 125         {
 126             m_sleepTime = 1.0;
 127 #if wxUSE_THREADS
 128             wxMutexGuiLeave();
 129             wxMilliSleep(20);
 130             wxMutexGuiEnter();
 131 #endif
 132         }
 133     }
 134
 135     return true;
 136 }
 137
 138 bool wxGUIEventLoop::YieldFor(long eventsToProcess)
 139 {
 140 #if wxUSE_THREADS
 141     // Yielding from a non-gui thread needs to bail out, otherwise we end up
 142     // possibly sending events in the thread too.
 143     if ( !wxThread::IsMain() )
 144     {
 145         return true;
 146     }
 147 #endif // wxUSE_THREADS
 148
 149     m_isInsideYield = true;
 150     m_eventsToProcessInsideYield = eventsToProcess;
 151
 152 #if wxUSE_LOG
 153     // disable log flushing from here because a call to wxYield() shouldn't
 154     // normally result in message boxes popping up &c
 155     wxLog::Suspend();
 156 #endif // wxUSE_LOG
 157
 158     // process all pending events:
 159     while ( Pending() )
 160         Dispatch();
 161
 162     // it's necessary to call ProcessIdle() to update the frames sizes which
 163     // might have been changed (it also will update other things set from
 164     // OnUpdateUI() which is a nice (and desired) side effect)
 165     while ( ProcessIdle() ) {}
 166
 167     // if there are pending events, we must process them.
 168     if (wxTheApp)
 169         wxTheApp->ProcessPendingEvents();
 170
 171 #if wxUSE_LOG
 172     wxLog::Resume();
 173 #endif // wxUSE_LOG
 174     m_isInsideYield = false;
 175
 176     return true;
 177 }
 178
 179 int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
 180 {
 181     wxMacAutoreleasePool autoreleasepool;
 182
 183     NSEvent *event = [NSApp
 184                 nextEventMatchingMask:NSAnyEventMask
 185                 untilDate:[NSDate dateWithTimeIntervalSinceNow: timeout/1000]
 186                 inMode:NSDefaultRunLoopMode
 187                 dequeue: YES];
 188     if ( !event )
 189         return -1;
 190
 191     [NSApp sendEvent: event];
 192
 193     return true;
 194 }