author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 00:38:12 +0300 | |
changeset 30 | 80e4d18b72f5 |
parent 23 | e6ad4ef83b23 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (developer.feedback@nokia.com) |
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** |
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** This file is part of the HbCore module of the UI Extensions for Mobile. |
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** |
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** GNU Lesser General Public License Usage |
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** This file may be used under the terms of the GNU Lesser General Public |
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** License version 2.1 as published by the Free Software Foundation and |
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** appearing in the file LICENSE.LGPL included in the packaging of this file. |
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** Please review the following information to ensure the GNU Lesser General |
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** Public License version 2.1 requirements will be met: |
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at developer.feedback@nokia.com. |
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** |
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****************************************************************************/ |
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#include "hbswipegesture.h" |
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#include "hbswipegesturelogic_p.h" |
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#include "hbgestures_p.h" |
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#include "hbpointrecorder_p.h" |
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#include "hbvelocitycalculator_p.h" |
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#include <hbdeviceprofile.h> |
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#include <QEvent> |
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#include <QGestureRecognizer> |
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#include <QGraphicsView> |
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#include <QMouseEvent> |
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/*! |
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@hbcore |
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\internal |
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\class HbSwipeGestureLogic |
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\brief |
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*/ |
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/*! |
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\internal |
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\brief |
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\return |
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*/ |
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HbSwipeGestureLogic::HbSwipeGestureLogic() |
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{ |
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} |
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HbSwipeGestureLogic::~HbSwipeGestureLogic() {} |
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/*! |
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\internal |
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\brief |
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\return |
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*/ |
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bool HbSwipeGestureLogic::isMouseEvent(QEvent::Type eventType) |
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{ |
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return eventType == QEvent::MouseButtonPress || |
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eventType == QEvent::MouseMove || |
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eventType == QEvent::MouseButtonDblClick || |
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eventType == QEvent::MouseButtonRelease; |
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} |
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/*! |
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\internal |
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\brief |
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\return |
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*/ |
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void HbSwipeGestureLogic::resetGesture(HbSwipeGesture *gesture) |
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{ |
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gesture->setSwipeAngle(0); |
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gesture->setSceneSwipeAngle(0); |
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gesture->d_func()->mStartPos = QPointF(); |
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gesture->d_func()->mSceneStartPos = QPointF(); |
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} |
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/*! |
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\internal |
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\brief |
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\return |
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*/ |
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QGestureRecognizer::Result HbSwipeGestureLogic::handleMousePress( |
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Qt::GestureState gestureState, |
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HbSwipeGesture *gesture, |
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QObject *watched, |
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QMouseEvent *me, |
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qint64 currentTime) |
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{ |
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// Just ignore situations that are not interesting at all. |
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if (!(gestureState == Qt::NoGesture && me->button() == Qt::LeftButton)) { |
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return QGestureRecognizer::Ignore; |
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} |
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gesture->d_func()->mStartTime = currentTime; |
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109 |
|
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gesture->d_func()->mStartPos = me->globalPos(); |
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gesture->d_func()->mSceneStartPos = HbGestureUtils::mapToScene(watched, me->globalPos()); |
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112 |
|
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gesture->setHotSpot(me->globalPos()); |
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114 |
|
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qreal velocityThreshold = HbPanVelocityUpdateThreshold * HbDeviceProfile::current().ppmValue(); |
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|
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gesture->d_ptr->mAxisX.resetRecorder(velocityThreshold); |
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gesture->d_ptr->mAxisY.resetRecorder(velocityThreshold); |
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gesture->d_ptr->mAxisX.record(me->globalPos().x(), currentTime); |
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gesture->d_ptr->mAxisY.record(me->globalPos().y(), currentTime); |
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121 |
|
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return QGestureRecognizer::MayBeGesture; |
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} |
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124 |
|
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/*! |
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\internal |
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\brief |
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\return |
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*/ |
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QGestureRecognizer::Result HbSwipeGestureLogic::handleMouseMove( |
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Qt::GestureState gestureState, |
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HbSwipeGesture *gesture, |
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QObject *watched, |
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QMouseEvent *me, |
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qint64 currentTime ) |
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{ |
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Q_UNUSED(watched); |
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Q_UNUSED(gestureState); |
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|
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if (!me->buttons().testFlag(Qt::LeftButton)){ |
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return QGestureRecognizer::Ignore; |
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} |
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|
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gesture->d_ptr->mAxisX.record(me->globalPos().x(), currentTime); |
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gesture->d_ptr->mAxisY.record(me->globalPos().y(), currentTime); |
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return QGestureRecognizer::MayBeGesture; |
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} |
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|
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/*! |
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\internal |
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\brief |
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\return |
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|
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*/ |
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#include <QDebug> |
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QGestureRecognizer::Result HbSwipeGestureLogic::handleMouseRelease( |
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Qt::GestureState gestureState, |
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HbSwipeGesture *gesture, |
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QObject *watched, |
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QMouseEvent *me, |
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qint64 currentTime ) |
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{ |
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Q_UNUSED(gesture); |
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Q_UNUSED(watched); |
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Q_UNUSED(gestureState); |
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|
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if (me->button() != Qt::LeftButton) { |
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return QGestureRecognizer::Ignore; |
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} |
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|
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QPoint totalOffset = me->globalPos() - gesture->d_func()->mStartPos.toPoint(); |
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|
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qint64 deltaTime = currentTime - gesture->d_func()->mStartTime; |
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QPointF velocity = deltaTime != 0 ? totalOffset / deltaTime : QPointF(0,0); |
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|
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gesture->setSwipeAngle(QLineF(gesture->d_func()->mStartPos, me->globalPos()).angle()); |
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gesture->setSceneSwipeAngle(QLineF(gesture->d_func()->mSceneStartPos, HbGestureUtils::mapToScene(watched, me->globalPos())).angle()); |
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bool movedEnough = totalOffset.manhattanLength() >= (int)(HbSwipeMinOffset * HbDeviceProfile::current().ppmValue()); |
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bool fastEnough = velocity.manhattanLength() >= HbSwipeMinSpeed * HbDeviceProfile::current().ppmValue(); |
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bool notStoppedAtEnd = HbVelocityCalculator(gesture->d_func()->mAxisX, gesture->d_func()->mAxisY).velocity(currentTime) != QPointF(0,0); |
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183 |
|
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if (movedEnough && fastEnough && notStoppedAtEnd) { |
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return QGestureRecognizer::FinishGesture; |
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} else { |
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return QGestureRecognizer::Ignore; |
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} |
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} |
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|
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/*! |
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\internal |
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\brief |
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\return |
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|
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*/ |
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QGestureRecognizer::Result HbSwipeGestureLogic::recognize( |
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Qt::GestureState gestureState, |
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HbSwipeGesture *gesture, |
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QObject *watched, |
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QEvent *event, |
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qint64 currentTime) |
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{ |
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if ( isMouseEvent(event->type()) ) |
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{ |
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QMouseEvent* me = static_cast<QMouseEvent*>(event); |
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switch(event->type()) |
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{ |
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case QEvent::MouseButtonDblClick: |
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case QEvent::MouseButtonPress: |
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return handleMousePress(gestureState, gesture, watched, me, currentTime); |
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|
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case QEvent::MouseMove: |
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return handleMouseMove(gestureState, gesture, watched, me, currentTime); |
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|
1
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case QEvent::MouseButtonRelease: |
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return handleMouseRelease(gestureState, gesture, watched, me, currentTime); |
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|
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default: break; |
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} |
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} |
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return QGestureRecognizer::Ignore; |
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} |