add virtual DoGetTextExtent() to allow calling the overloaded wxWindowBase::GetTextEx...

[wxWidgets.git] / src / cocoa / evtloop.mm

diff --git a/src/cocoa/evtloop.mm b/src/cocoa/evtloop.mm
index bd1611587bf2d4bc245266f4e67d6b409252f968..de848b00e3954cf57f2cb38ca6c6f1fa38130256 100644 (file)
--- a/src/cocoa/evtloop.mm
+++ b/src/cocoa/evtloop.mm
@@ -6,86 +6,65 @@
 // Created:     2003/10/02
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 David Elliott <dfe@cox.net>
 // Created:     2003/10/02
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 David Elliott <dfe@cox.net>

-// License:     wxWindows licence
+// License:     wxWidgets licence

 ///////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "wx/wxprec.h"

+
+#include "wx/evtloop.h"
+

 #ifndef WX_PRECOMP
     #include "wx/log.h"
 #ifndef WX_PRECOMP
     #include "wx/log.h"

+    #include "wx/app.h"

 #endif //WX_PRECOMP
 
 #endif //WX_PRECOMP
 

-#include "wx/evtloop.h"
-

 #import <AppKit/NSApplication.h>
 #import <AppKit/NSApplication.h>

+#import <AppKit/NSEvent.h>
+#import <Foundation/NSRunLoop.h>

 
 // ========================================================================
 
 // ========================================================================

-// wxEventLoopImpl
-// ========================================================================
-
-class WXDLLEXPORT wxEventLoopImpl
-{
-public:
-    // ctor
-    wxEventLoopImpl() { SetExitCode(0); }
-
-    // set/get the exit code
-    void SetExitCode(int exitcode) { m_exitcode = exitcode; }
-    int GetExitCode() const { return m_exitcode; }
-
-private:
-    // the exit code of the event loop
-    int m_exitcode;
-};
-
-// ========================================================================
-// wxEventLoop
+// wxGUIEventLoop

 // ========================================================================
 
 // ----------------------------------------------------------------------------
 // ========================================================================
 
 // ----------------------------------------------------------------------------

-// wxEventLoop running and exiting
+// wxGUIEventLoop running and exiting

 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 

-wxEventLoop *wxEventLoop::ms_activeLoop = NULL;
-
-wxEventLoop::~wxEventLoop()
-{
-    wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
-}
-
-bool wxEventLoop::IsRunning() const
-{
-    return m_impl;
-}
-
-int wxEventLoop::Run()
+int wxGUIEventLoop::Run()

 {
     // event loops are not recursive, you need to create another loop!
     wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
 
 {
     // event loops are not recursive, you need to create another loop!
     wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
 

-    wxEventLoop *oldLoop = ms_activeLoop;
-    ms_activeLoop = this;
-
-    m_impl = new wxEventLoopImpl;
+    wxEventLoopActivator activate(this);

 
     [[NSApplication sharedApplication] run];
 
 
     [[NSApplication sharedApplication] run];
 

-    int exitcode = m_impl->GetExitCode();
-    delete m_impl;
-    m_impl = NULL;
-
-    ms_activeLoop = oldLoop;
+    OnExit();

 
 

-    return exitcode;
+    return m_exitcode;

 }
 
 }
 

-void wxEventLoop::Exit(int rc)
+void wxGUIEventLoop::Exit(int rc)

 {
     wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
 
 {
     wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
 

-    m_impl->SetExitCode(rc);
+    m_exitcode = rc;

 
     NSApplication *cocoaApp = [NSApplication sharedApplication];
 
     NSApplication *cocoaApp = [NSApplication sharedApplication];

-    wxLogDebug("wxEventLoop::Exit isRunning=%d", (int)[cocoaApp isRunning]);
+    wxLogTrace(wxTRACE_COCOA,wxT("wxEventLoop::Exit isRunning=%d"), (int)[cocoaApp isRunning]);
+    wxTheApp->WakeUpIdle();
+    /* Notes:
+    If we're being called from idle time (which occurs while checking the
+    queue for new events) there may or may not be any events in the queue.
+    In order to successfully stop the event loop, at least one event must
+    be processed.  To ensure this always happens, WakeUpIdle is called.
+
+    If the application was active when closed then this is unnecessary
+    because it would receive a deactivate event anyway.  However, if the
+    application was not active when closed, then no events would be
+    added to the queue by Cocoa and thus the application would wait
+    indefinitely for the next event.
+    */

     [cocoaApp stop: cocoaApp];
 }
 
     [cocoaApp stop: cocoaApp];
 }
 


@@ -93,14 +72,106 @@ void wxEventLoop::Exit(int rc)
 // wxEventLoop message processing dispatching
 // ----------------------------------------------------------------------------
 
 // wxEventLoop message processing dispatching
 // ----------------------------------------------------------------------------
 

-bool wxEventLoop::Pending() const
+bool wxGUIEventLoop::Pending() const

 {
 {

-    return 0;
+    // a pointer to the event is returned if there is one, or nil if not
+    return [[NSApplication sharedApplication]
+            nextEventMatchingMask: NSAnyEventMask
+            untilDate: nil /* Equivalent to [NSDate distantPast] */
+            inMode: NSDefaultRunLoopMode
+            dequeue: NO];

 }
 
 }
 

-bool wxEventLoop::Dispatch()
+bool wxGUIEventLoop::Dispatch()

 {
 {

+    // This check is required by wxGTK but probably not really for wxCocoa
+    // Keep it here to encourage developers to write cross-platform code

     wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );
     wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );

-    return false;
+    NSApplication *cocoaApp = [NSApplication sharedApplication];
+    // Block to retrieve an event then send it
+    if(NSEvent *event = [cocoaApp
+                nextEventMatchingMask:NSAnyEventMask
+                untilDate:[NSDate distantFuture]
+                inMode:NSDefaultRunLoopMode
+                dequeue: YES])
+    {
+        [cocoaApp sendEvent: event];
+    }
+
+    return true;

 }
 
 }
 

+int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
+{
+    NSApplication *cocoaApp = [NSApplication sharedApplication];
+    NSEvent *event = [cocoaApp
+                nextEventMatchingMask:NSAnyEventMask
+                untilDate:[[NSDate alloc] initWithTimeIntervalSinceNow:timeout/1000]
+                inMode:NSDefaultRunLoopMode
+                dequeue: YES];
+    if ( !event )
+        return -1;
+
+    [cocoaApp sendEvent: event];
+
+    return true;
+}
+
+bool wxGUIEventLoop::YieldFor(long eventsToProcess)
+{
+#if wxUSE_LOG
+    // disable log flushing from here because a call to wxYield() shouldn't
+    // normally result in message boxes popping up &c
+    wxLog::Suspend();
+#endif // wxUSE_LOG
+
+    m_isInsideYield = true;
+    m_eventsToProcessInsideYield = eventsToProcess;
+
+    // Run the event loop until it is out of events
+    while (1)
+    {
+        // TODO: implement event filtering using the eventsToProcess mask
+
+        wxAutoNSAutoreleasePool pool;
+        /*  NOTE: It may be better to use something like
+            NSEventTrackingRunLoopMode since we don't necessarily want all
+            timers/sources/observers to run, only those which would
+            run while tracking events.  However, it should be noted that
+            NSEventTrackingRunLoopMode is in the common set of modes
+            so it may not effectively make much of a difference.
+         */
+        NSEvent *event = [GetNSApplication()
+                nextEventMatchingMask:NSAnyEventMask
+                untilDate:[NSDate distantPast]
+                inMode:NSDefaultRunLoopMode
+                dequeue: YES];
+        if(!event)
+            break;
+        [GetNSApplication() sendEvent: event];
+    }
+
+    /*
+        Because we just told NSApplication to avoid blocking it will in turn
+        run the CFRunLoop with a timeout of 0 seconds.  In that case, our
+        run loop observer on kCFRunLoopBeforeWaiting never fires because
+        no waiting occurs.  Therefore, no idle events are sent.
+
+        Believe it or not, this is actually desirable because we do not want
+        to process idle from here.  However, we do want to process pending
+        events because some user code expects to do work in a thread while
+        the main thread waits and then notify the main thread by posting
+        an event.
+     */
+    if (wxTheApp)
+        wxTheApp->ProcessPendingEvents();
+
+#if wxUSE_LOG
+    // let the logs be flashed again
+    wxLog::Resume();
+#endif // wxUSE_LOG
+
+    m_isInsideYield = false;
+
+    return true;
+}