source: trunk/src/gui/kernel/qeventdispatcher_mac.mm@ 5

Last change on this file since 5 was 2, checked in by Dmitry A. Kuminov, 16 years ago

Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
File size: 35.5 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** Contact: Qt Software Information ([email protected])
5**
6** This file is part of the QtGui module of the Qt Toolkit.
7**
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38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42/****************************************************************************
43**
44** Copyright (c) 2007-2008, Apple, Inc.
45**
46** All rights reserved.
47**
48** Redistribution and use in source and binary forms, with or without
49** modification, are permitted provided that the following conditions are met:
50**
51** * Redistributions of source code must retain the above copyright notice,
52** this list of conditions and the following disclaimer.
53**
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55** this list of conditions and the following disclaimer in the documentation
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73**
74****************************************************************************/
75
76#include "qplatformdefs.h"
77#include "private/qt_mac_p.h"
78#include "qeventdispatcher_mac_p.h"
79#include "qapplication.h"
80#include "qevent.h"
81#include "qdialog.h"
82#include "qhash.h"
83#include "qsocketnotifier.h"
84#include "private/qwidget_p.h"
85#include "private/qthread_p.h"
86#include "private/qapplication_p.h"
87
88#include <private/qcocoaapplication_mac_p.h>
89#include "private/qt_cocoa_helpers_mac_p.h"
90
91#ifndef QT_NO_THREAD
92# include "qmutex.h"
93
94QT_BEGIN_NAMESPACE
95
96QT_USE_NAMESPACE
97#endif
98
99/*****************************************************************************
100 Externals
101 *****************************************************************************/
102extern void qt_event_request_timer(MacTimerInfo *); //qapplication_mac.cpp
103extern MacTimerInfo *qt_event_get_timer(EventRef); //qapplication_mac.cpp
104extern void qt_event_request_select(QEventDispatcherMac *); //qapplication_mac.cpp
105extern void qt_event_request_updates(); //qapplication_mac.cpp
106extern OSWindowRef qt_mac_window_for(const QWidget *); //qwidget_mac.cpp
107extern bool qt_is_gui_used; //qapplication.cpp
108extern bool qt_sendSpontaneousEvent(QObject*, QEvent*); // qapplication.cpp
109extern bool qt_mac_is_macsheet(const QWidget *); //qwidget_mac.cpp
110
111static inline CFRunLoopRef mainRunLoop()
112{
113#ifndef QT_MAC_USE_COCOA
114 return reinterpret_cast<CFRunLoopRef>(const_cast<void *>(GetCFRunLoopFromEventLoop(GetMainEventLoop())));
115#else
116 return CFRunLoopGetMain();
117#endif
118}
119
120/*****************************************************************************
121 Timers stuff
122 *****************************************************************************/
123
124/* timer call back */
125void QEventDispatcherMacPrivate::activateTimer(CFRunLoopTimerRef, void *info)
126{
127 int timerID =
128#ifdef Q_OS_MAC64
129 qint64(info);
130#else
131 int(info);
132#endif
133
134 MacTimerInfo *tmr;
135 tmr = macTimerHash.value(timerID);
136 if (tmr == 0 || tmr->pending == true)
137 return; // Can't send another timer event if it's pending.
138
139 tmr->pending = true;
140 QTimerEvent e(tmr->id);
141 qt_sendSpontaneousEvent(tmr->obj, &e);
142
143 // Get the value again in case the timer gets unregistered during the sendEvent.
144 tmr = macTimerHash.value(timerID);
145 if (tmr != 0)
146 tmr->pending = false;
147}
148
149void QEventDispatcherMac::registerTimer(int timerId, int interval, QObject *obj)
150{
151#ifndef QT_NO_DEBUG
152 if (timerId < 1 || interval < 0 || !obj) {
153 qWarning("QEventDispatcherMac::registerTimer: invalid arguments");
154 return;
155 } else if (obj->thread() != thread() || thread() != QThread::currentThread()) {
156 qWarning("QObject::startTimer: timers cannot be started from another thread");
157 return;
158 }
159#endif
160
161 MacTimerInfo *t = new MacTimerInfo();
162 t->id = timerId;
163 t->interval = interval;
164 t->obj = obj;
165 t->runLoopTimer = 0;
166 t->pending = false;
167
168 CFAbsoluteTime fireDate = CFAbsoluteTimeGetCurrent();
169 CFTimeInterval cfinterval = qMax(CFTimeInterval(interval) / 1000, 0.0000001);
170 fireDate += cfinterval;
171 QEventDispatcherMacPrivate::macTimerHash.insert(timerId, t);
172 CFRunLoopTimerContext info = { 0, (void *)timerId, 0, 0, 0 };
173 t->runLoopTimer = CFRunLoopTimerCreate(0, fireDate, cfinterval, 0, 0,
174 QEventDispatcherMacPrivate::activateTimer, &info);
175 if (t->runLoopTimer == 0) {
176 qFatal("QEventDispatcherMac::registerTimer: Cannot create timer");
177 }
178 CFRunLoopAddTimer(mainRunLoop(), t->runLoopTimer, kCFRunLoopCommonModes);
179}
180
181bool QEventDispatcherMac::unregisterTimer(int identifier)
182{
183#ifndef QT_NO_DEBUG
184 if (identifier < 1) {
185 qWarning("QEventDispatcherMac::unregisterTimer: invalid argument");
186 return false;
187 } else if (thread() != QThread::currentThread()) {
188 qWarning("QObject::killTimer: timers cannot be stopped from another thread");
189 return false;
190 }
191#endif
192 if (identifier <= 0)
193 return false; // not init'd or invalid timer
194
195 MacTimerInfo *timerInfo = QEventDispatcherMacPrivate::macTimerHash.take(identifier);
196 if (timerInfo == 0)
197 return false;
198
199 if (!QObjectPrivate::get(timerInfo->obj)->inThreadChangeEvent)
200 QAbstractEventDispatcherPrivate::releaseTimerId(identifier);
201 CFRunLoopTimerInvalidate(timerInfo->runLoopTimer);
202 CFRelease(timerInfo->runLoopTimer);
203 delete timerInfo;
204
205 return true;
206}
207
208bool QEventDispatcherMac::unregisterTimers(QObject *obj)
209{
210#ifndef QT_NO_DEBUG
211 if (!obj) {
212 qWarning("QEventDispatcherMac::unregisterTimers: invalid argument");
213 return false;
214 } else if (obj->thread() != thread() || thread() != QThread::currentThread()) {
215 qWarning("QObject::killTimers: timers cannot be stopped from another thread");
216 return false;
217 }
218#endif
219
220 MacTimerHash::iterator it = QEventDispatcherMacPrivate::macTimerHash.begin();
221 while (it != QEventDispatcherMacPrivate::macTimerHash.end()) {
222 MacTimerInfo *timerInfo = it.value();
223 if (timerInfo->obj != obj) {
224 ++it;
225 } else {
226 if (!QObjectPrivate::get(timerInfo->obj)->inThreadChangeEvent)
227 QAbstractEventDispatcherPrivate::releaseTimerId(timerInfo->id);
228 CFRunLoopTimerInvalidate(timerInfo->runLoopTimer);
229 CFRelease(timerInfo->runLoopTimer);
230 delete timerInfo;
231 it = QEventDispatcherMacPrivate::macTimerHash.erase(it);
232 }
233 }
234 return true;
235}
236
237QList<QEventDispatcherMac::TimerInfo>
238QEventDispatcherMac::registeredTimers(QObject *object) const
239{
240 if (!object) {
241 qWarning("QEventDispatcherMac:registeredTimers: invalid argument");
242 return QList<TimerInfo>();
243 }
244
245 QList<TimerInfo> list;
246
247 MacTimerHash::const_iterator it = QEventDispatcherMacPrivate::macTimerHash.constBegin();
248 while (it != QEventDispatcherMacPrivate::macTimerHash.constEnd()) {
249 MacTimerInfo *t = it.value();
250 if (t->obj == object)
251 list << TimerInfo(t->id, t->interval);
252 ++it;
253 }
254 return list;
255}
256
257/**************************************************************************
258 Socket Notifiers
259 *************************************************************************/
260void qt_mac_socket_callback(CFSocketRef s, CFSocketCallBackType callbackType, CFDataRef,
261 const void *, void *info) {
262 QEventDispatcherMacPrivate *const eventDispatcher
263 = static_cast<QEventDispatcherMacPrivate *>(info);
264 int nativeSocket = CFSocketGetNative(s);
265 MacSocketInfo *socketInfo = eventDispatcher->macSockets.value(nativeSocket);
266 QEvent notifierEvent(QEvent::SockAct);
267 if (callbackType == kCFSocketReadCallBack) {
268 Q_ASSERT(socketInfo->readNotifier);
269 QApplication::sendEvent(socketInfo->readNotifier, &notifierEvent);
270 } else if (callbackType == kCFSocketWriteCallBack) {
271 // ### Bug in Apple socket notifiers seems to send write even
272 // ### after the notifier has been disabled, need to investigate further.
273 if (socketInfo->writeNotifier)
274 QApplication::sendEvent(socketInfo->writeNotifier, &notifierEvent);
275 }
276}
277
278/*
279 Adds a loop source for the given socket to the current run loop.
280*/
281CFRunLoopSourceRef qt_mac_add_socket_to_runloop(const CFSocketRef socket)
282{
283 CFRunLoopSourceRef loopSource = CFSocketCreateRunLoopSource(kCFAllocatorDefault, socket, 0);
284 if (!loopSource)
285 return 0;
286
287 CFRunLoopAddSource(mainRunLoop(), loopSource, kCFRunLoopCommonModes);
288 return loopSource;
289}
290
291/*
292 Removes the loop source for the given socket from the current run loop.
293*/
294void qt_mac_remove_socket_from_runloop(const CFSocketRef socket, CFRunLoopSourceRef runloop)
295{
296 Q_ASSERT(runloop);
297 CFRunLoopRemoveSource(mainRunLoop(), runloop, kCFRunLoopCommonModes);
298 CFSocketDisableCallBacks(socket, kCFSocketReadCallBack);
299 CFSocketDisableCallBacks(socket, kCFSocketWriteCallBack);
300 CFRunLoopSourceInvalidate(runloop);
301}
302
303/*
304 Register a QSocketNotifier with the mac event system by creating a CFSocket with
305 with a read/write callback.
306
307 Qt has separate socket notifiers for reading and writing, but on the mac there is
308 a limitation of one CFSocket object for each native socket.
309*/
310void QEventDispatcherMac::registerSocketNotifier(QSocketNotifier *notifier)
311{
312 Q_ASSERT(notifier);
313 int nativeSocket = notifier->socket();
314 int type = notifier->type();
315#ifndef QT_NO_DEBUG
316 if (nativeSocket < 0 || nativeSocket > FD_SETSIZE) {
317 qWarning("QSocketNotifier: Internal error");
318 return;
319 } else if (notifier->thread() != thread()
320 || thread() != QThread::currentThread()) {
321 qWarning("QSocketNotifier: socket notifiers cannot be enabled from another thread");
322 return;
323 }
324#endif
325
326 Q_D(QEventDispatcherMac);
327
328 if (type == QSocketNotifier::Exception) {
329 qWarning("QSocketNotifier::Exception is not supported on Mac OS X");
330 return;
331 }
332
333 // Check if we have a CFSocket for the native socket, create one if not.
334 MacSocketInfo *socketInfo = d->macSockets.value(nativeSocket);
335 if (!socketInfo) {
336 socketInfo = new MacSocketInfo();
337
338 // Create CFSocket, specify that we want both read and write callbacks (the callbacks
339 // are enabled/disabled later on).
340 const int callbackTypes = kCFSocketReadCallBack | kCFSocketWriteCallBack;
341 CFSocketContext context = {0, d, 0, 0, 0};
342 socketInfo->socket = CFSocketCreateWithNative(kCFAllocatorDefault, nativeSocket, callbackTypes, qt_mac_socket_callback, &context);
343 if (CFSocketIsValid(socketInfo->socket) == false) {
344 qWarning("QEventDispatcherMac::registerSocketNotifier: Failed to create CFSocket");
345 return;
346 }
347
348 CFOptionFlags flags = CFSocketGetSocketFlags(socketInfo->socket);
349 flags |= kCFSocketAutomaticallyReenableWriteCallBack; //QSocketNotifier stays enabled after a write
350 flags &= ~kCFSocketCloseOnInvalidate; //QSocketNotifier doesn't close the socket upon destruction/invalidation
351 CFSocketSetSocketFlags(socketInfo->socket, flags);
352
353 // Add CFSocket to runloop.
354 if(!(socketInfo->runloop = qt_mac_add_socket_to_runloop(socketInfo->socket))) {
355 qWarning("QEventDispatcherMac::registerSocketNotifier: Failed to add CFSocket to runloop");
356 CFSocketInvalidate(socketInfo->socket);
357 CFRelease(socketInfo->socket);
358 return;
359 }
360
361 // Disable both callback types by default. This must be done after
362 // we add the CFSocket to the runloop, or else these calls will have
363 // no effect.
364 CFSocketDisableCallBacks(socketInfo->socket, kCFSocketReadCallBack);
365 CFSocketDisableCallBacks(socketInfo->socket, kCFSocketWriteCallBack);
366
367 d->macSockets.insert(nativeSocket, socketInfo);
368 }
369
370 // Increment read/write counters and select enable callbacks if necessary.
371 if (type == QSocketNotifier::Read) {
372 Q_ASSERT(socketInfo->readNotifier == 0);
373 socketInfo->readNotifier = notifier;
374 CFSocketEnableCallBacks(socketInfo->socket, kCFSocketReadCallBack);
375 } else if (type == QSocketNotifier::Write) {
376 Q_ASSERT(socketInfo->writeNotifier == 0);
377 socketInfo->writeNotifier = notifier;
378 CFSocketEnableCallBacks(socketInfo->socket, kCFSocketWriteCallBack);
379 }
380}
381
382/*
383 Unregister QSocketNotifer. The CFSocket correspoding to this notifier is
384 removed from the runloop of this is the last notifier that users
385 that CFSocket.
386*/
387void QEventDispatcherMac::unregisterSocketNotifier(QSocketNotifier *notifier)
388{
389 Q_ASSERT(notifier);
390 int nativeSocket = notifier->socket();
391 int type = notifier->type();
392#ifndef QT_NO_DEBUG
393 if (nativeSocket < 0 || nativeSocket > FD_SETSIZE) {
394 qWarning("QSocketNotifier: Internal error");
395 return;
396 } else if (notifier->thread() != thread() || thread() != QThread::currentThread()) {
397 qWarning("QSocketNotifier: socket notifiers cannot be disabled from another thread");
398 return;
399 }
400#endif
401
402 Q_D(QEventDispatcherMac);
403
404 if (type == QSocketNotifier::Exception) {
405 qWarning("QSocketNotifier::Exception is not supported on Mac OS X");
406 return;
407 }
408 MacSocketInfo *socketInfo = d->macSockets.value(nativeSocket);
409 if (!socketInfo) {
410 qWarning("QEventDispatcherMac::unregisterSocketNotifier: Tried to unregister a not registered notifier");
411 return;
412 }
413
414 // Decrement read/write counters and disable callbacks if necessary.
415 if (type == QSocketNotifier::Read) {
416 Q_ASSERT(notifier == socketInfo->readNotifier);
417 socketInfo->readNotifier = 0;
418 CFSocketDisableCallBacks(socketInfo->socket, kCFSocketReadCallBack);
419 } else if (type == QSocketNotifier::Write) {
420 Q_ASSERT(notifier == socketInfo->writeNotifier);
421 socketInfo->writeNotifier = 0;
422 CFSocketDisableCallBacks(socketInfo->socket, kCFSocketWriteCallBack);
423 }
424
425 // Remove CFSocket from runloop if this was the last QSocketNotifier.
426 if (socketInfo->readNotifier == 0 && socketInfo->writeNotifier == 0) {
427 if (CFSocketIsValid(socketInfo->socket))
428 qt_mac_remove_socket_from_runloop(socketInfo->socket, socketInfo->runloop);
429 CFRunLoopSourceInvalidate(socketInfo->runloop);
430 CFRelease(socketInfo->runloop);
431 CFSocketInvalidate(socketInfo->socket);
432 CFRelease(socketInfo->socket);
433 delete socketInfo;
434 d->macSockets.remove(nativeSocket);
435 }
436}
437
438bool QEventDispatcherMac::hasPendingEvents()
439{
440 extern uint qGlobalPostedEventsCount();
441 return qGlobalPostedEventsCount() || (qt_is_gui_used && GetNumEventsInQueue(GetMainEventQueue()));
442}
443
444
445static bool qt_mac_send_event(QEventLoop::ProcessEventsFlags, OSEventRef event, OSWindowRef pt)
446{
447#ifndef QT_MAC_USE_COCOA
448 if(pt && SendEventToWindow(event, pt) != eventNotHandledErr)
449 return true;
450 return !SendEventToEventTarget(event, GetEventDispatcherTarget());
451#else // QT_MAC_USE_COCOA
452 if (pt)
453 [pt sendEvent:event];
454 else
455 [NSApp sendEvent:event];
456 return true;
457#endif
458}
459
460#ifdef QT_MAC_USE_COCOA
461static bool IsMouseOrKeyEvent( NSEvent* event )
462{
463 bool result = false;
464
465 switch( [event type] )
466 {
467 case NSLeftMouseDown:
468 case NSLeftMouseUp:
469 case NSRightMouseDown:
470 case NSRightMouseUp:
471 case NSMouseMoved: // ??
472 case NSLeftMouseDragged:
473 case NSRightMouseDragged:
474 case NSMouseEntered:
475 case NSMouseExited:
476 case NSKeyDown:
477 case NSKeyUp:
478 case NSFlagsChanged: // key modifiers changed?
479 case NSCursorUpdate: // ??
480 case NSScrollWheel:
481 case NSTabletPoint:
482 case NSTabletProximity:
483 case NSOtherMouseDown:
484 case NSOtherMouseUp:
485 case NSOtherMouseDragged:
486 result = true;
487 break;
488
489 default:
490 break;
491 }
492 return result;
493}
494#endif
495
496bool QEventDispatcherMac::processEvents(QEventLoop::ProcessEventsFlags flags)
497{
498 Q_D(QEventDispatcherMac);
499 d->interrupt = false;
500 // In case we end up recursing while we now process events, make sure
501 // that we send remaining posted Qt events before this call returns:
502 wakeUp();
503 emit awake();
504
505#ifndef QT_MAC_NO_QUICKDRAW
506 if(!qt_mac_safe_pdev) { //create an empty widget and this can be used for a port anytime
507 QWidget *tlw = new QWidget;
508 tlw->setAttribute(Qt::WA_DeleteOnClose);
509 tlw->setObjectName(QLatin1String("empty_widget"));
510 tlw->hide();
511 qt_mac_safe_pdev = tlw;
512 }
513#endif
514
515 bool retVal = false;
516 forever {
517 if (d->interrupt)
518 break;
519
520#ifdef QT_MAC_USE_COCOA
521 QMacCocoaAutoReleasePool pool;
522 NSEvent* event = 0;
523
524 if (flags & QEventLoop::DialogExec || flags & QEventLoop::EventLoopExec) {
525 // The point of the CocoaRequestModal event is to make sure that a
526 // non-execed app modal window recurses into it's own dialog exec
527 // once cocoa is spinning the event loop for us (e.g on top of [NSApp run]).
528 // We expect only one event to notify us about this, regardless of how many
529 // widgets that are waiting to be modal. So we remove all other pending
530 // events, if any. And since cocoa will now take over event processing for us,
531 // we allow new app modal widgets to recurse on top of us, hence the release of
532 // the block:
533 QBoolBlocker block(d->blockCocoaRequestModal, false);
534 QCoreApplication::removePostedEvents(qApp, QEvent::CocoaRequestModal);
535
536 if (NSModalSession session = d->activeModalSession())
537 while ([NSApp runModalSession:session] == NSRunContinuesResponse) {
538 // runModalSession will not wait for events, so we do it
539 // ourselves (otherwise we would spend 100% CPU inside this loop):
540 event = [NSApp nextEventMatchingMask:NSAnyEventMask
541 untilDate:[NSDate distantFuture] inMode:NSModalPanelRunLoopMode dequeue:YES];
542 if (event)
543 [NSApp postEvent:event atStart:YES];
544 }
545 else
546 [NSApp run];
547
548 d->rebuildModalSessionStack(false);
549 retVal = true;
550 } else do {
551 // Since we now are going to spin the event loop just _one_ round
552 // we need to block all incoming CocoaRequestModal events to ensure
553 // that we don't recurse into a new exec-ing event loop while doing
554 // so (and as such, 'hang' the thread inside the recursion):
555 QBoolBlocker block(d->blockCocoaRequestModal, true);
556 bool mustRelease = false;
557
558 if (!(flags & QEventLoop::ExcludeUserInputEvents) && !d->queuedUserInputEvents.isEmpty()) {
559 // process a pending user input event
560 mustRelease = true;
561 event = static_cast<NSEvent *>(d->queuedUserInputEvents.takeFirst());
562 } else {
563 if (NSModalSession session = d->activeModalSession()) {
564 // There's s a modal widget showing, run it's session:
565 if (flags & QEventLoop::WaitForMoreEvents) {
566 // Wait for at least one event
567 // before spinning the session:
568 event = [NSApp nextEventMatchingMask:NSAnyEventMask
569 untilDate:[NSDate distantFuture] inMode:NSModalPanelRunLoopMode dequeue:YES];
570 if (event)
571 [NSApp postEvent:event atStart:YES];
572 }
573 [NSApp runModalSession:session];
574 retVal = true;
575 break;
576 } else {
577 event = [NSApp nextEventMatchingMask:NSAnyEventMask
578 untilDate:nil
579 inMode:NSDefaultRunLoopMode
580 dequeue: YES];
581
582 if (event != nil) {
583 if (flags & QEventLoop::ExcludeUserInputEvents) {
584 if (IsMouseOrKeyEvent(event)) {
585 // retain event here?
586 [event retain];
587 d->queuedUserInputEvents.append(event);
588 continue;
589 }
590 }
591 }
592 }
593 }
594 if (event) {
595 if (!filterEvent(event) && qt_mac_send_event(flags, event, 0))
596 retVal = true;
597 if (mustRelease)
598 [event release];
599 }
600 } while(!d->interrupt && event != nil);
601
602#else
603 do {
604 EventRef event;
605 if (!(flags & QEventLoop::ExcludeUserInputEvents)
606 && !d->queuedUserInputEvents.isEmpty()) {
607 // process a pending user input event
608 event = static_cast<EventRef>(d->queuedUserInputEvents.takeFirst());
609 } else {
610 OSStatus err = ReceiveNextEvent(0,0, kEventDurationNoWait, true, &event);
611 if(err != noErr)
612 continue;
613 // else
614 if (flags & QEventLoop::ExcludeUserInputEvents) {
615 UInt32 ekind = GetEventKind(event),
616 eclass = GetEventClass(event);
617 switch(eclass) {
618 case kEventClassQt:
619 if(ekind != kEventQtRequestContext)
620 break;
621 // fall through
622 case kEventClassMouse: