+// ----------------------------------------------------------------------------
+// wxEventLoop adding & removing sources
+// ----------------------------------------------------------------------------
+
+#if wxUSE_EVENTLOOP_SOURCE
+
+extern "C"
+{
+static gboolean wx_on_channel_event(GIOChannel *channel,
+ GIOCondition condition,
+ gpointer data)
+{
+ wxUnusedVar(channel); // Unused if !wxUSE_LOG || !wxDEBUG_LEVEL
+
+ wxLogTrace(wxTRACE_EVT_SOURCE,
+ "wx_on_channel_event, fd=%d, condition=%08x",
+ g_io_channel_unix_get_fd(channel), condition);
+
+ wxEventLoopSourceHandler * const
+ handler = static_cast<wxEventLoopSourceHandler *>(data);
+
+ if ( (condition & G_IO_IN) || (condition & G_IO_PRI) || (condition & G_IO_HUP) )
+ handler->OnReadWaiting();
+
+ if (condition & G_IO_OUT)
+ handler->OnWriteWaiting();
+
+ if ( (condition & G_IO_ERR) || (condition & G_IO_NVAL) )
+ handler->OnExceptionWaiting();
+
+ // we never want to remove source here, so always return true
+ //
+ // The source may have been removed by the handler, so it may be
+ // a good idea to return FALSE when the source has already been
+ // removed. However, that would involve somehow informing this function
+ // that the source was removed, which is not trivial to implement
+ // and handle all cases. It has been found through testing
+ // that if the source was removed by the handler, that even if we
+ // return TRUE here, the source/callback will not get called again.
+ return TRUE;
+}
+}
+
+class wxGUIEventLoopSourcesManager : public wxEventLoopSourcesManagerBase
+{
+public:
+ virtual wxEventLoopSource*
+ AddSourceForFD(int fd, wxEventLoopSourceHandler *handler, int flags)
+ {
+ wxCHECK_MSG( fd != -1, NULL, "can't monitor invalid fd" );
+
+ int condition = 0;
+ if ( flags & wxEVENT_SOURCE_INPUT )
+ condition |= G_IO_IN | G_IO_PRI | G_IO_HUP;
+ if ( flags & wxEVENT_SOURCE_OUTPUT )
+ condition |= G_IO_OUT;
+ if ( flags & wxEVENT_SOURCE_EXCEPTION )
+ condition |= G_IO_ERR | G_IO_NVAL;
+
+ GIOChannel* channel = g_io_channel_unix_new(fd);
+ const unsigned sourceId = g_io_add_watch
+ (
+ channel,
+ (GIOCondition)condition,
+ &wx_on_channel_event,
+ handler
+ );
+ // it was ref'd by g_io_add_watch() so we can unref it here
+ g_io_channel_unref(channel);
+
+ if ( !sourceId )
+ return NULL;
+
+ wxLogTrace(wxTRACE_EVT_SOURCE,
+ "Adding event loop source for fd=%d with GTK id=%u",
+ fd, sourceId);
+
+
+ return new wxGTKEventLoopSource(sourceId, handler, flags);
+ }
+};
+
+wxEventLoopSourcesManagerBase* wxGUIAppTraits::GetEventLoopSourcesManager()
+{
+ static wxGUIEventLoopSourcesManager s_eventLoopSourcesManager;
+
+ return &s_eventLoopSourcesManager;
+}
+
+wxGTKEventLoopSource::~wxGTKEventLoopSource()
+{
+ wxLogTrace(wxTRACE_EVT_SOURCE,
+ "Removing event loop source with GTK id=%u", m_sourceId);
+
+ g_source_remove(m_sourceId);
+}
+
+#endif // wxUSE_EVENTLOOP_SOURCE
+
projects / wxWidgets.git / blobdiff