X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/564c7fc4127c39472b32f80b32733eb6e3ade59c..169dc97542bcf418ad8244bdba45014e2337d9a6:/src/gtk/evtloop.cpp diff --git a/src/gtk/evtloop.cpp b/src/gtk/evtloop.cpp index a609bed729..e05af19f5d 100644 --- a/src/gtk/evtloop.cpp +++ b/src/gtk/evtloop.cpp @@ -28,6 +28,7 @@ #ifndef WX_PRECOMP #include "wx/app.h" + #include "wx/log.h" #endif // WX_PRECOMP #include @@ -36,6 +37,8 @@ // wxEventLoop implementation // ============================================================================ +extern GtkWidget *wxGetRootWindow(); + // ---------------------------------------------------------------------------- // wxEventLoop running and exiting // ---------------------------------------------------------------------------- @@ -95,7 +98,7 @@ bool wxGUIEventLoop::Pending() const 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") ); // gtk_main_iteration() returns TRUE only if gtk_main_quit() was called return !gtk_main_iteration(); @@ -126,4 +129,160 @@ int wxGUIEventLoop::DispatchTimeout(unsigned long timeout) return !quit; } +//----------------------------------------------------------------------------- +// YieldFor +//----------------------------------------------------------------------------- + +static void wxgtk_main_do_event(GdkEvent *event, wxGUIEventLoop* evtloop) +{ + // categorize the GDK event according to wxEventCategory. + // See http://library.gnome.org/devel/gdk/unstable/gdk-Events.html#GdkEventType + // for more info. + + // NOTE: GDK_* constants which were not present in the GDK2.0 can be tested for + // only at compile-time; when running the program (compiled with a recent GDK) + // on a system with an older GDK lib we can be sure there won't be problems + // because event->type will never assume those values corresponding to + // new event types (since new event types are always added in GDK with non + // conflicting values for ABI compatibility). + + wxEventCategory cat = wxEVT_CATEGORY_UNKNOWN; + switch (event->type) + { + case GDK_SELECTION_REQUEST: + case GDK_SELECTION_NOTIFY: + case GDK_SELECTION_CLEAR: +#if GTK_CHECK_VERSION(2,6,0) + case GDK_OWNER_CHANGE: +#endif + cat = wxEVT_CATEGORY_CLIPBOARD; + break; + + case GDK_KEY_PRESS: + case GDK_KEY_RELEASE: + case GDK_BUTTON_PRESS: + case GDK_2BUTTON_PRESS: + case GDK_3BUTTON_PRESS: + case GDK_BUTTON_RELEASE: + case GDK_SCROLL: // generated from mouse buttons + case GDK_CLIENT_EVENT: + cat = wxEVT_CATEGORY_USER_INPUT; + break; + + case GDK_PROXIMITY_IN: + case GDK_PROXIMITY_OUT: + + case GDK_MOTION_NOTIFY: + case GDK_ENTER_NOTIFY: + case GDK_LEAVE_NOTIFY: + case GDK_VISIBILITY_NOTIFY: + case GDK_PROPERTY_NOTIFY: + + case GDK_FOCUS_CHANGE: + case GDK_CONFIGURE: + case GDK_WINDOW_STATE: + case GDK_SETTING: + case GDK_DELETE: + case GDK_DESTROY: + + case GDK_EXPOSE: + case GDK_NO_EXPOSE: + case GDK_MAP: + case GDK_UNMAP: + + case GDK_DRAG_ENTER: + case GDK_DRAG_LEAVE: + case GDK_DRAG_MOTION: + case GDK_DRAG_STATUS: + case GDK_DROP_START: + case GDK_DROP_FINISHED: +#if GTK_CHECK_VERSION(2,8,0) + case GDK_GRAB_BROKEN: +#endif +#if GTK_CHECK_VERSION(2,14,0) + case GDK_DAMAGE: +#endif + cat = wxEVT_CATEGORY_UI; + break; + + default: + cat = wxEVT_CATEGORY_UNKNOWN; + break; + } + + // is this event allowed now? + if (evtloop->IsEventAllowedInsideYield(cat)) + gtk_main_do_event(event); // process it now + else if (event->type != GDK_NOTHING) + evtloop->StoreGdkEventForLaterProcessing(gdk_event_copy(event)); + // process it later (but make a copy; the caller will free the event pointer) +} + +bool wxGUIEventLoop::YieldFor(long eventsToProcess) +{ +#if wxUSE_THREADS + if ( !wxThread::IsMain() ) + { + // can't call gtk_main_iteration() from other threads like this + return true; + } +#endif // wxUSE_THREADS + + m_isInsideYield = true; + m_eventsToProcessInsideYield = 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 + + // temporarily replace the global GDK event handler with our function, which + // categorizes the events and using m_eventsToProcessInsideYield decides + // if an event should be processed immediately or not + // NOTE: this approach is better than using gdk_display_get_event() because + // gtk_main_iteration() does more than just calling gdk_display_get_event() + // and then call gtk_main_do_event()! + // In particular in this way we also process input from sources like + // GIOChannels (this is needed for e.g. wxGUIAppTraits::WaitForChild). + gdk_event_handler_set ((GdkEventFunc)wxgtk_main_do_event, this, NULL); + while (Pending()) // avoid false positives from our idle source + gtk_main_iteration(); + gdk_event_handler_set ((GdkEventFunc)gtk_main_do_event, NULL, NULL); + + if (eventsToProcess != wxEVT_CATEGORY_CLIPBOARD) + { + // 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). But we + // call ProcessIdle() only once since this is not meant for longish + // background jobs (controlled by wxIdleEvent::RequestMore() and the + // return value of Processidle(). + ProcessIdle(); // ProcessIdle() also calls ProcessPendingEvents() + } + //else: if we are inside ~wxClipboardSync() and we call ProcessIdle() and + // the user app contains an UI update handler which calls wxClipboard::IsSupported, + // then we fall into a never-ending loop... + + // put all unprocessed GDK events back in the queue + GdkDisplay* disp = gtk_widget_get_display(wxGetRootWindow()); + for (size_t i=0; i