X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7bdc18790e34d17edfc02f3e25edcb3425b38a8a..94e0018723919fe2ca2f5b5f0a42804c16dbf3a1:/src/mgl/evtloop.cpp

diff --git a/src/mgl/evtloop.cpp b/src/mgl/evtloop.cpp
index 9f8161da68..5e89f6b8b8 100644
--- a/src/mgl/evtloop.cpp
+++ b/src/mgl/evtloop.cpp
@@ -1,20 +1,16 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        mgl/evtloop.cpp
+// Name:        src/mgl/evtloop.cpp
 // Purpose:     implements wxEventLoop for MGL
 // Author:      Vaclav Slavik
 // RCS-ID:      $Id$
-// Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
-// License:     wxWindows license
+// Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
+// Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "evtloop.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -26,10 +22,12 @@
     #include "wx/window.h"
     #include "wx/app.h"
     #include "wx/thread.h"
+    #include "wx/timer.h"
 #endif //WX_PRECOMP
 
 #include "wx/evtloop.h"
 
+#include "wx/generic/private/timer.h"
 #include "wx/mgl/private.h"
 
 // ----------------------------------------------------------------------------
@@ -43,19 +41,19 @@ public:
     wxEventLoopImpl()
         {
             SetExitCode(0);
-            SetKeepLooping(TRUE);
+            SetKeepLooping(true);
         }
 
-    // process a message
-    void ProcessEvent(event_t *evt);
+    // process an event
+    void Dispatch();
 
-    // generate an idle message, return TRUE if more idle time requested
-    bool SendIdleMessage();
+    // generate an idle event, return true if more idle time requested
+    bool SendIdleEvent();
 
     // set/get the exit code
     void SetExitCode(int exitcode) { m_exitcode = exitcode; }
     int GetExitCode() const { return m_exitcode; }
-    
+
     void SetKeepLooping(bool k) { m_keepLooping = k; }
     bool GetKeepLooping() const { return m_keepLooping; }
 
@@ -63,7 +61,7 @@ private:
 
     // the exit code of the event loop
     int m_exitcode;
-    // FALSE if the loop should end
+    // false if the loop should end
     bool m_keepLooping;
 };
 
@@ -71,43 +69,58 @@ private:
 // wxEventLoopImpl implementation
 // ============================================================================
 
-void wxEventLoopImpl::ProcessEvent(event_t *evt)
+void wxEventLoopImpl::Dispatch()
 {
-    MGL_wmProcessEvent(g_winMng, evt);
+    event_t evt;
+
+    // VS: The code below is equal to MGL's EVT_halt implementation, with
+    //     two things added: sleeping (busy waiting is stupid, let's make CPU's
+    //     life a bit easier) and timers updating.
+
+    // EVT_halt(&evt, EVT_EVERYEVT);
+    for (;;)
+    {
+#if wxUSE_TIMER
+        wxGenericTimerImpl::NotifyTimers();
+#endif
+        MGL_wmUpdateDC(g_winMng);
+
+        EVT_pollJoystick();
+        if ( EVT_getNext(&evt, EVT_EVERYEVT) ) break;
+        PM_sleep(10);
+    }
+    // end of EVT_halt
+
+    MGL_wmProcessEvent(g_winMng, &evt);
 }
 
-bool wxEventLoopImpl::SendIdleMessage()
+bool wxEventLoopImpl::SendIdleEvent()
 {
-    wxIdleEvent event;
-
-    return wxTheApp->ProcessEvent(event) && event.MoreRequested();
+    return wxTheApp->ProcessIdle();
 }
 
 // ============================================================================
-// wxEventLoop implementation
+// wxGUIEventLoop implementation
 // ============================================================================
 
 // ----------------------------------------------------------------------------
-// wxEventLoop running and exiting
+// wxGUIEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop::~wxEventLoop()
+wxGUIEventLoop::~wxGUIEventLoop()
 {
-    wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
+    wxASSERT_MSG( !m_impl, wxT("should have been deleted in Run()") );
 }
 
-bool wxEventLoop::IsRunning() const
-{
-    return m_impl != NULL;
-}
-
-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") );
+    wxCHECK_MSG( !IsRunning(), -1, wxT("can't reenter a message loop") );
 
     m_impl = new wxEventLoopImpl;
 
+    wxEventLoopActivator activate(this);
+
     for ( ;; )
     {
 #if wxUSE_THREADS
@@ -116,7 +129,7 @@ int wxEventLoop::Run()
 
         // generate and process idle events for as long as we don't have
         // anything else to do
-        while ( !Pending() && m_impl->SendIdleMessage() ) {}
+        while ( !Pending() && m_impl->SendIdleEvent() ) {}
 
         // a message came or no more idle processing to do, sit in Dispatch()
         // waiting for the next message
@@ -127,50 +140,82 @@ int wxEventLoop::Run()
         }
     }
 
+    OnExit();
+
     int exitcode = m_impl->GetExitCode();
-    delete m_impl;
-    m_impl = NULL;
+    wxDELETE(m_impl);
 
     return 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(), wxT("can't call Exit() if not running") );
 
     m_impl->SetExitCode(rc);
-    m_impl->SetKeepLooping(FALSE);
+    m_impl->SetKeepLooping(false);
+
+    // Send a dummy event so that the app won't block in EVT_halt if there
+    // are no user-generated events in the queue:
+    EVT_post(0, EVT_USEREVT, 0, 0);
 }
 
 // ----------------------------------------------------------------------------
 // wxEventLoop message processing dispatching
 // ----------------------------------------------------------------------------
 
-bool wxEventLoop::Pending() const
+bool wxGUIEventLoop::Pending() const
 {
+    // update the display here, so that wxYield refreshes display and
+    // changes take effect immediately, not after emptying events queue:
+    MGL_wmUpdateDC(g_winMng);
+
+    // is there an event in the queue?
     event_t evt;
-    return EVT_peekNext(&evt, EVT_EVERYEVT);
+    return (bool)(EVT_peekNext(&evt, EVT_EVERYEVT));
 }
 
-bool wxEventLoop::Dispatch()
+bool wxGUIEventLoop::Dispatch()
 {
-    wxCHECK_MSG( IsRunning(), FALSE, _T("can't call Dispatch() if not running") );
+    wxCHECK_MSG( IsRunning(), false, wxT("can't call Dispatch() if not running") );
+
+    m_impl->Dispatch();
+    return m_impl->GetKeepLooping();
+}
 
-    event_t evt;
-    ibool rc = EVT_getNext(&evt, EVT_EVERYEVT);
 
-    if ( !rc )
+//-----------------------------------------------------------------------------
+// wxYield
+//-----------------------------------------------------------------------------
+
+bool wxGUIEventLoop::YieldFor(long eventsToProcess)
+{
+#if wxUSE_THREADS
+    if ( !wxThread::IsMain() )
     {
-        wxLogError(_T("events queue empty even though Pending() returned true"));
-        return FALSE;
+        // can't process events from other threads, MGL is thread-unsafe
+        return true;
     }
-    
-    // FIXME_MGL -- there must be some way to programatically exit
-    // the loop, like WM_QUIT under Windows -- perhaps we need custom
-    // event to indicate this??
+#endif // wxUSE_THREADS
 
-    m_impl->ProcessEvent(&evt);
+    m_isInsideYield = true;
+    m_eventsToProcessInsideYield = eventsToProcess;
 
-    return m_impl->GetKeepLooping();
-}
+    wxLog::Suspend();
+
+    // TODO: implement event filtering using the eventsToProcess mask
+
+    while (Pending())
+        Dispatch();
 
+    /* it's necessary to call ProcessIdle() to update the frames sizes which
+       might have been changed (it also will update other things set from
+       OnUpdateUI() which is a nice (and desired) side effect) */
+    while (wxTheApp->ProcessIdle()) { }
+
+    wxLog::Resume();
+
+    m_isInsideYield = false;
+
+    return true;
+}