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Diffstat (limited to 'src/gui/kernel/qgesturemanager.cpp')
| -rw-r--r-- | src/gui/kernel/qgesturemanager.cpp | 644 |
1 files changed, 0 insertions, 644 deletions
diff --git a/src/gui/kernel/qgesturemanager.cpp b/src/gui/kernel/qgesturemanager.cpp deleted file mode 100644 index 20abda9..0000000 --- a/src/gui/kernel/qgesturemanager.cpp +++ /dev/null @@ -1,644 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the either Technology Preview License Agreement or the -** Beta Release License Agreement. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain -** additional rights. These rights are described in the Nokia Qt LGPL -** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this -** package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** If you are unsure which license is appropriate for your use, please -** contact the sales department at http://www.qtsoftware.com/contact. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qgesturemanager_p.h" -#include "qgesture.h" -#include "qgesture_p.h" -#include "qevent.h" - -#include "qapplication.h" -#include "qapplication_p.h" -#include "qwidget.h" -#include "qwidget_p.h" - -#include "qgesturestandardrecognizers_p.h" - -#include "qdebug.h" - -// #define GESTURE_DEBUG -#ifndef GESTURE_DEBUG -# define DEBUG if (0) qDebug -#else -# define DEBUG qDebug -#endif - -QT_BEGIN_NAMESPACE - -bool qt_sendSpontaneousEvent(QObject *receiver, QEvent *event); - -static const unsigned int MaximumGestureRecognitionTimeout = 2000; - -QGestureManager::QGestureManager(QObject *parent) - : QObject(parent), eventDeliveryDelayTimeout(300), - delayedPressTimer(0), lastMousePressReceiver(0), lastMousePressEvent(QEvent::None, QPoint(), Qt::NoButton, 0, 0), - lastGestureId(0), state(NotGesture) -{ - qRegisterMetaType<Qt::DirectionType>(); - qRegisterMetaType<Qt::GestureState>(); - - recognizers << new QDoubleTapGestureRecognizer(this); - recognizers << new QTapAndHoldGestureRecognizer(this); - recognizers << new QGestureRecognizerPan(this); - - foreach(QGestureRecognizer *r, recognizers) - connect(r, SIGNAL(stateChanged(QGestureRecognizer::Result)), - this, SLOT(recognizerStateChanged(QGestureRecognizer::Result))); -} - -void QGestureManager::addRecognizer(QGestureRecognizer *recognizer) -{ - recognizer->setParent(this); - recognizers << recognizer; -} - -void QGestureManager::removeRecognizer(QGestureRecognizer *recognizer) -{ - recognizers.remove(recognizer); -} - -bool QGestureManager::filterEvent(QWidget *receiver, QEvent *event) -{ - QPoint currentPos; - switch (event->type()) { - case QEvent::MouseButtonPress: - case QEvent::MouseButtonRelease: - case QEvent::MouseButtonDblClick: - case QEvent::MouseMove: - currentPos = static_cast<QMouseEvent*>(event)->pos(); break; - default: break; - } - - const QMap<QString, int> &grabbedGestures = qApp->d_func()->grabbedGestures; - - bool ret = false; - QSet<QGestureRecognizer*> startedGestures; - QSet<QGestureRecognizer*> finishedGestures; - QSet<QGestureRecognizer*> newMaybeGestures; - QSet<QGestureRecognizer*> cancelledGestures; - QSet<QGestureRecognizer*> notGestures; - if (state == NotGesture || state == MaybeGesture) { - DEBUG() << "QGestureManager: current event processing state: " - << (state == NotGesture ? "NotGesture" : "MaybeGesture"); - - QSet<QGestureRecognizer*> stillMaybeGestures; - // try other recognizers. - foreach(QGestureRecognizer *r, recognizers) { - if (grabbedGestures.value(r->gestureType(), 0) <= 0) - continue; - QGestureRecognizer::Result result = r->filterEvent(event); - if (result == QGestureRecognizer::GestureStarted) { - DEBUG() << "QGestureManager: gesture started: " << r; - startedGestures << r; - } else if (result == QGestureRecognizer::GestureFinished) { - DEBUG() << "QGestureManager: gesture finished: " << r; - finishedGestures << r; - } else if (result == QGestureRecognizer::MaybeGesture) { - DEBUG() << "QGestureManager: maybe gesture: " << r; - newMaybeGestures << r; - } else if (result == QGestureRecognizer::NotGesture) { - // if it was maybe gesture, but isn't a gesture anymore. - DEBUG() << "QGestureManager: not gesture: " << r; - notGestures << r; - } - } - Q_ASSERT(activeGestures.isEmpty()); - activeGestures += startedGestures; - for(QMap<QGestureRecognizer*, int>::iterator it = maybeGestures.begin(); - it != maybeGestures.end();) { - QGestureRecognizer *r = it.key(); - if (startedGestures.contains(r) || finishedGestures.contains(r) || - notGestures.contains(r)) { - killTimer(it.value()); - it = maybeGestures.erase(it); - } else { - ++it; - } - } - foreach(QGestureRecognizer *r, newMaybeGestures) { - if (!maybeGestures.contains(r)) { - int timerId = startTimer(MaximumGestureRecognitionTimeout); - if (!timerId) - qWarning("QGestureManager: couldn't start timer!"); - maybeGestures.insert(r, timerId); - } - } - if (!finishedGestures.isEmpty() || !startedGestures.isEmpty()) { - // gesture found! - ret = true; - QSet<QGesture*> started; - foreach(QGestureRecognizer *r, finishedGestures) { - if (QGesture *gesture = r->getGesture()) { - started << gesture; - gesture->d_func()->singleshot = true; - } - } - foreach(QGestureRecognizer *r, startedGestures) { - if (QGesture *gesture = r->getGesture()) { - started << gesture; - gesture->d_func()->singleshot = false; - } - } - - if (!activeGestures.isEmpty()) { - DEBUG() << "QGestureManager: new state = Gesture"; - state = Gesture; - } else if (!maybeGestures.isEmpty()) { - DEBUG() << "QGestureManager: new state = Maybe"; - state = MaybeGesture; - } else { - DEBUG() << "QGestureManager: new state = NotGesture"; - state = NotGesture; - } - - Q_ASSERT(!started.isEmpty()); - ret = sendGestureEvent(receiver, started, QSet<QGesture*>()); - } else if (!maybeGestures.isEmpty()) { - if (state != MaybeGesture) { - // We got a new set of events that look like a start - // of some gesture, so we switch to state MaybeGesture - // and wait for more events. - DEBUG() << "QGestureManager: new state = Maybe. Waiting for events"; - state = MaybeGesture; - // start gesture timer - } else { - // we still not sure if it is a gesture or not. - } - } else if (state == MaybeGesture) { - // last time we thought it looks like gesture, but now we - // know for sure that it isn't. - DEBUG() << "QGestureManager: new state = NotGesture"; - state = NotGesture; - } - foreach(QGestureRecognizer *r, finishedGestures) - r->reset(); - foreach(QGestureRecognizer *r, cancelledGestures) - r->reset(); - foreach(QGestureRecognizer *r, notGestures) - r->reset(); - } else if (state == Gesture) { - DEBUG() << "QGestureManager: current event processing state: Gesture"; - Q_ASSERT(!activeGestures.isEmpty()); - - foreach(QGestureRecognizer *r, recognizers) { - if (grabbedGestures.value(r->gestureType(), 0) <= 0) - continue; - QGestureRecognizer::Result result = r->filterEvent(event); - if (result == QGestureRecognizer::GestureStarted) { - DEBUG() << "QGestureManager: gesture started: " << r; - startedGestures << r; - } else if (result == QGestureRecognizer::GestureFinished) { - DEBUG() << "QGestureManager: gesture finished: " << r; - finishedGestures << r; - } else if (result == QGestureRecognizer::MaybeGesture) { - DEBUG() << "QGestureManager: maybe gesture: " << r; - newMaybeGestures << r; - } else if (result == QGestureRecognizer::NotGesture) { - // if it was an active gesture, but isn't a gesture anymore. - if (activeGestures.contains(r)) { - DEBUG() << "QGestureManager: cancelled gesture: " << r; - cancelledGestures << r; - } else { - DEBUG() << "QGestureManager: not gesture: " << r; - notGestures << r; - } - } - } - - for(QMap<QGestureRecognizer*, int>::iterator it = maybeGestures.begin(); - it != maybeGestures.end();) { - QGestureRecognizer *r = it.key(); - if (startedGestures.contains(r) || finishedGestures.contains(r) || - notGestures.contains(r)) { - killTimer(it.value()); - it = maybeGestures.erase(it); - } else { - ++it; - } - } - foreach(QGestureRecognizer *r, newMaybeGestures) { - if (!maybeGestures.contains(r)) { - int timerId = startTimer(MaximumGestureRecognitionTimeout); - if (!timerId) - qWarning("QGestureManager: couldn't start timer!"); - maybeGestures.insert(r, timerId); - } - } - QSet<QGesture*> started, updated; - if (!finishedGestures.isEmpty() || !startedGestures.isEmpty()) { - // another gesture found! - ret = true; - foreach(QGestureRecognizer *r, finishedGestures) { - if (QGesture *gesture = r->getGesture()) { - gesture->d_func()->singleshot = !activeGestures.contains(r); - if (gesture->d_func()->singleshot) - started << gesture; - else - updated << gesture; - } - } - foreach(QGestureRecognizer *r, startedGestures) { - if (QGesture *gesture = r->getGesture()) { - gesture->d_func()->singleshot = !activeGestures.contains(r); - if (gesture->d_func()->singleshot) - started << gesture; - else - updated << gesture; - } - } - } - activeGestures -= newMaybeGestures; - activeGestures -= cancelledGestures; - activeGestures += startedGestures; - activeGestures -= finishedGestures; - QSet<QString> cancelledGestureNames; - foreach(QGestureRecognizer *r, cancelledGestures) - cancelledGestureNames << r->gestureType(); - ret = sendGestureEvent(receiver, started, updated, cancelledGestureNames); - - foreach(QGestureRecognizer *r, finishedGestures) - r->reset(); - foreach(QGestureRecognizer *r, cancelledGestures) - r->reset(); - foreach(QGestureRecognizer *r, notGestures) - r->reset(); - if (!activeGestures.isEmpty()) { - // nothing changed, we are still handling a gesture - } else if (!maybeGestures.isEmpty()) { - DEBUG() << "QGestureManager: new state = Maybe. Waiting for events: " << maybeGestures; - state = MaybeGesture; - } else { - DEBUG() << "QGestureManager: new state = NotGesture"; - state = NotGesture; - } - } - - if (delayedPressTimer && state == Gesture) { - DEBUG() << "QGestureManager: gesture started. Forgetting about postponed mouse press event"; - killTimer(delayedPressTimer); - delayedPressTimer = 0; - lastMousePressReceiver = 0; - } else if (delayedPressTimer && (state == NotGesture || - event->type() == QEvent::MouseButtonRelease)) { - // not a gesture or released button too fast, so replay press - // event back. - DEBUG() << "QGestureManager: replaying mouse press event"; - QMap<QGestureRecognizer*, int>::const_iterator it = maybeGestures.begin(), - e = maybeGestures.end();; - for (; it != e; ++it) { - it.key()->reset(); - killTimer(it.value()); - } - maybeGestures.clear(); - state = NotGesture; - - if (lastMousePressReceiver) { - QApplication::sendEvent(lastMousePressReceiver, &lastMousePressEvent); - if (event->type() == QEvent::MouseButtonRelease) { - QMouseEvent *me = static_cast<QMouseEvent*>(event); - QMouseEvent move(QEvent::MouseMove, me->pos(), me->globalPos(), me->button(), - me->buttons(), me->modifiers()); - QApplication::sendEvent(lastMousePressReceiver, &move); - ret = false; - } - lastMousePressReceiver = 0; - } - lastMousePressReceiver = 0; - killTimer(delayedPressTimer); - delayedPressTimer = 0; - } else if (state == MaybeGesture && event->type() == QEvent::MouseButtonPress - && eventDeliveryDelayTimeout) { - // postpone the press event delivery until we know for - // sure whether it is a gesture. - DEBUG() << "QGestureManager: postponing mouse press event"; - QMouseEvent *me = static_cast<QMouseEvent*>(event); - lastMousePressReceiver = receiver; - lastMousePressEvent = QMouseEvent(QEvent::MouseButtonPress, me->pos(), - me->globalPos(), me->button(), - me->buttons(), me->modifiers()); - Q_ASSERT(delayedPressTimer == 0); - delayedPressTimer = startTimer(eventDeliveryDelayTimeout); - if (!delayedPressTimer) - qWarning("QGestureManager: couldn't start delayed press timer!"); - ret = true; - } - if (delayedPressTimer && event->type() == QEvent::MouseMove) { - // if we have postponed a mouse press event, postpone all - // subsequent mouse move events as well. - ret = true; - } - - lastPos = currentPos; - return ret; -} - -void QGestureManager::timerEvent(QTimerEvent *event) -{ - if (event->timerId() == delayedPressTimer) { - DEBUG() << "QGestureManager: replaying mouse press event due to timeout"; - // sanity checks - Q_ASSERT(state != Gesture); - - QMap<QGestureRecognizer*, int>::const_iterator it = maybeGestures.begin(), - e = maybeGestures.end();; - for (; it != e; ++it) { - it.key()->reset(); - killTimer(it.value()); - } - maybeGestures.clear(); - state = NotGesture; - - if (lastMousePressReceiver) { - // we neither received a mouse release event nor gesture - // started, so we replay stored mouse press event. - QApplication::sendEvent(lastMousePressReceiver, &lastMousePressEvent); - lastMousePressReceiver = 0; - } - - lastMousePressReceiver = 0; - killTimer(delayedPressTimer); - delayedPressTimer = 0; - } else { - // sanity checks, remove later - Q_ASSERT((state == Gesture && !activeGestures.isEmpty()) || (state != Gesture && activeGestures.isEmpty())); - - typedef QMap<QGestureRecognizer*, int> MaybeGestureMap; - for (MaybeGestureMap::iterator it = maybeGestures.begin(), e = maybeGestures.end(); - it != e; ++it) { - if (it.value() == event->timerId()) { - DEBUG() << "QGestureManager: gesture timeout."; - QGestureRecognizer *r = it.key(); - r->reset(); - maybeGestures.erase(it); - killTimer(event->timerId()); - break; - } - } - - if (state == MaybeGesture && maybeGestures.isEmpty()) { - DEBUG() << "QGestureManager: new state = NotGesture because of timeout"; - state = NotGesture; - } - } -} - -bool QGestureManager::inGestureMode() -{ - return state == Gesture; -} - -void QGestureManager::recognizerStateChanged(QGestureRecognizer::Result result) -{ - QGestureRecognizer *recognizer = qobject_cast<QGestureRecognizer*>(sender()); - if (!recognizer) - return; - if (qApp->d_func()->grabbedGestures.value(recognizer->gestureType(), 0) <= 0) { - recognizer->reset(); - return; - } - - switch (result) { - case QGestureRecognizer::GestureStarted: - case QGestureRecognizer::GestureFinished: { - if (result == QGestureRecognizer::GestureStarted) { - DEBUG() << "QGestureManager: gesture started: " << recognizer; - activeGestures << recognizer; - DEBUG() << "QGestureManager: new state = Gesture"; - state = Gesture; - } else { - DEBUG() << "QGestureManager: gesture finished: " << recognizer; - } - if (maybeGestures.contains(recognizer)) { - killTimer(maybeGestures.value(recognizer)); - maybeGestures.remove(recognizer); - } - QSet<QGesture*> gestures; - if (QGesture *gesture = recognizer->getGesture()) - gestures << gesture; - if(!gestures.isEmpty()) { - //FIXME: sendGestureEvent(targetWidget, gestures); - } - if (result == QGestureRecognizer::GestureFinished) - recognizer->reset(); - } - break; - case QGestureRecognizer::MaybeGesture: { - DEBUG() << "QGestureManager: maybe gesture: " << recognizer; - if (activeGestures.contains(recognizer)) { - //FIXME: sendGestureEvent(targetWidget, QSet<QGesture*>(), QSet<QString>() << recognizer->gestureType()); - } - if (!maybeGestures.contains(recognizer)) { - int timerId = startTimer(MaximumGestureRecognitionTimeout); - if (!timerId) - qWarning("QGestureManager: couldn't start timer!"); - maybeGestures.insert(recognizer, timerId); - } - } - break; - case QGestureRecognizer::NotGesture: - DEBUG() << "QGestureManager: not gesture: " << recognizer; - if (maybeGestures.contains(recognizer)) { - killTimer(maybeGestures.value(recognizer)); - maybeGestures.remove(recognizer); - } - recognizer->reset(); - break; - default: - Q_ASSERT(false); - } - - if (delayedPressTimer && state == Gesture) { - killTimer(delayedPressTimer); - delayedPressTimer = 0; - } -} - -bool QGestureManager::sendGestureEvent(QWidget *receiver, - const QSet<QGesture*> &startedGestures, - const QSet<QGesture*> &updatedGestures, - const QSet<QString> &cancelled) -{ - DEBUG() << "QGestureManager::sendGestureEvent: sending to" << receiver - << "gestures:" << startedGestures << "," << updatedGestures - << "cancelled:" << cancelled; - // grouping gesture objects by receiver widgets. - typedef QMap<QWidget*, QSet<QGesture*> > WidgetGesturesMap; - WidgetGesturesMap widgetGestures; - for(QSet<QGesture*>::const_iterator it = startedGestures.begin(), e = startedGestures.end(); - it != e; ++it) { - QGesture *g = *it; - QGesturePrivate *gd = g->d_func(); - if (receiver) { - // find the target widget - gd->widget = 0; - gd->graphicsItem = 0; - QWidget *w = receiver; - QPoint offset; - const QString gestureType = g->type(); - while (w) { - if (w->d_func()->hasGesture(gestureType)) - break; - if (w->isWindow()) { - w = 0; - break; - } - offset += w->pos(); - w = w->parentWidget(); - } - if (w && w != gd->widget) { - DEBUG() << "QGestureManager::sendGestureEvent:" << g << "propagating to widget" << w << "offset" << offset; - g->translate(offset); - } - gd->widget = w; - } - if (!gd->widget) { - DEBUG() << "QGestureManager: didn't find a widget to send gesture event (" - << g->type() << ") for tree:" << receiver; - // TODO: maybe we should reset gesture recognizers when nobody interested in its gestures. - continue; - } - widgetGestures[gd->widget].insert(g); - } - - QSet<QGesture*> ignoredGestures; - bool ret = false; - for(WidgetGesturesMap::const_iterator it = widgetGestures.begin(), e = widgetGestures.end(); - it != e; ++it) { - QWidget *receiver = it.key(); - Q_ASSERT(receiver != 0 /*should be taken care above*/); - QSet<QGesture*> gestures = it.value(); - // mark all gestures as ignored by default - for(QSet<QGesture*>::iterator it = gestures.begin(), e = gestures.end(); it != e; ++it) - (*it)->ignore(); - // TODO: send cancelled gesture event to the widget that received the original gesture! - QGestureEvent event(gestures, cancelled); - DEBUG() << "QGestureManager::sendGestureEvent: sending now to" << receiver - << "gestures" << gestures; - bool processed = qt_sendSpontaneousEvent(receiver, &event); - QSet<QGesture*> started = startedGestures & gestures; - DEBUG() << "QGestureManager::sendGestureEvent:" << - (event.isAccepted() ? "" : "not") << "all gestures were accepted"; - if (!started.isEmpty() && !(processed && event.isAccepted())) { - // there are started gestures events that weren't - // accepted, so propagating each gesture independently. - if (event.isAccepted()) { - foreach(QGesture *g, started) - g->accept(); - } - QSet<QGesture*>::const_iterator it = started.begin(), - e = started.end(); - for(; it != e; ++it) { - QGesture *g = *it; - if (processed && g->isAccepted()) { - ret = true; - continue; - } - // if it wasn't accepted, find the first parent widget - // that is subscribed to the gesture. - QGesturePrivate *gd = g->d_func(); - QWidget *w = gd->widget; - gd->widget = 0; - - if (w && !w->isWindow()) { - g->translate(w->pos()); - w = w->parentWidget(); - QPoint offset; - const QString gestureType = g->type(); - while (w) { - if (w->d_func()->hasGesture(gestureType)) { - DEBUG() << "QGestureManager::sendGestureEvent:" << receiver - << "didn't accept gesture" << g << "propagating to" << w; - ignoredGestures.insert(g); - gd->widget = w; - break; - } - if (w->isWindow()) { - w = 0; - break; - } - offset += w->pos(); - w = w->parentWidget(); - } - if (w) { - g->translate(offset); - } else { - DEBUG() << "QGestureManager::sendGestureEvent:" << receiver - << "didn't accept gesture" << g << "and nobody wants it"; - } - } - } - } - } - if (ignoredGestures.isEmpty()) - return ret; - // try to send all gestures that were ignored to the next parent - return sendGestureEvent(0, ignoredGestures, QSet<QGesture*>(), cancelled) || ret; -} - -int QGestureManager::eventDeliveryDelay() const -{ - return eventDeliveryDelayTimeout; -} - -void QGestureManager::setEventDeliveryDelay(int ms) -{ - eventDeliveryDelayTimeout = ms; -} - -int QGestureManager::makeGestureId(const QString &name) -{ - gestureIdMap[++lastGestureId] = name; - return lastGestureId; -} - -void QGestureManager::releaseGestureId(int gestureId) -{ - gestureIdMap.remove(gestureId); -} - -QString QGestureManager::gestureNameFromId(int gestureId) const -{ - return gestureIdMap.value(gestureId); -} - -QT_END_NAMESPACE - -#include "moc_qgesturemanager_p.cpp" - |