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Diffstat (limited to 'src/gui/kernel/qmultitouch_mac.mm')
| -rw-r--r-- | src/gui/kernel/qmultitouch_mac.mm | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/src/gui/kernel/qmultitouch_mac.mm b/src/gui/kernel/qmultitouch_mac.mm new file mode 100644 index 0000000..89cfc24 --- /dev/null +++ b/src/gui/kernel/qmultitouch_mac.mm @@ -0,0 +1,208 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6 + +#include <private/qmultitouch_mac_p.h> +#include <qcursor.h> + +QT_BEGIN_NAMESPACE + +#ifdef QT_MAC_USE_COCOA + +QHash<int, QCocoaTouch*> QCocoaTouch::_currentTouches; +QPointF QCocoaTouch::_screenReferencePos; +QPointF QCocoaTouch::_trackpadReferencePos; +bool QCocoaTouch::_inMouseDraggingState = false; +int QCocoaTouch::_idAssignmentCount = 0; + +QCocoaTouch::QCocoaTouch(NSTouch *nstouch) +{ + _identity = int([nstouch identity]); + + if (_currentTouches.size() == 0){ + // A new touch sequence is about to begin: + _touchPoint.setState(Qt::TouchPointPressed | Qt::TouchPointPrimary); + NSPoint npos = [nstouch normalizedPosition]; + _trackpadPos = QPointF(npos.x, npos.y); + // This touch will act as reference for all subsequent + // touches, so they appear next to each other on screen: + _trackpadReferencePos = _trackpadPos; + _screenReferencePos = QCursor::pos(); + _touchPoint.setScreenPos(_screenReferencePos); + // The first touch should always have 0 as id: + _touchPoint.setId(0); + _idAssignmentCount = 0; + _currentTouches.insert(_identity, this); + } else { + // We are already tracking at least one touch point. + _touchPoint.setId(++_idAssignmentCount); + _currentTouches.insert(_identity, this); + updateTouchData(nstouch, NSTouchPhaseBegan); + } +} + +QCocoaTouch::~QCocoaTouch() +{ + _currentTouches.remove(_identity); +} + +void QCocoaTouch::updateTouchData(NSTouch *nstouch, NSTouchPhase phase) +{ + NSPoint npos = [nstouch normalizedPosition]; + _trackpadPos = QPointF(npos.x, npos.y); + + if (_inMouseDraggingState || _currentTouches.size() == 1) + _touchPoint.setState(toTouchPointState(phase) | Qt::TouchPointPrimary); + else + _touchPoint.setState(toTouchPointState(phase)); + + // From the normalized position on the trackpad, calculate + // where on screen the touchpoint should be according to the + // reference position: + NSSize dsize = [nstouch deviceSize]; + float ppiX = (_trackpadPos.x() - _trackpadReferencePos.x()) * dsize.width; + float ppiY = (_trackpadPos.y() - _trackpadReferencePos.y()) * dsize.height; + QPointF relativePos = _trackpadReferencePos - QPointF(ppiX, 1 - ppiY); + _touchPoint.setScreenPos(_screenReferencePos - relativePos); +} + +QCocoaTouch *QCocoaTouch::findQCocoaTouch(NSTouch *nstouch) +{ + int identity = int([nstouch identity]); + if (_currentTouches.contains(identity)) + return _currentTouches.value(identity); + return 0; +} + +Qt::TouchPointState QCocoaTouch::toTouchPointState(NSTouchPhase nsState) +{ + Qt::TouchPointState qtState = Qt::TouchPointReleased; + switch (nsState) { + case NSTouchPhaseBegan: + qtState = Qt::TouchPointPressed; + break; + case NSTouchPhaseMoved: + qtState = Qt::TouchPointMoved; + break; + case NSTouchPhaseStationary: + qtState = Qt::TouchPointStationary; + break; + case NSTouchPhaseEnded: + case NSTouchPhaseCancelled: + qtState = Qt::TouchPointReleased; + break; + default: + break; + } + return qtState; +} + +void QCocoaTouch::setMouseInDraggingState(bool inDraggingState) +{ + // In mouse dragging state, _all_ fingers control the mouse. + // As such, all fingers should have the primary flag. + _inMouseDraggingState = inDraggingState; +} + +void QCocoaTouch::validateCurrentTouchList(NSEvent *event) +{ + // If the application shows the task switcher during a touch sequence + // we get into an inconsistant state. We try to detect that here: + NSTouchPhase p = NSTouchPhaseAny & ~NSTouchPhaseBegan; + NSSet *s = [event touchesMatchingPhase:p inView:nil]; + if ([s count] == 0 && !_currentTouches.isEmpty()) { + // Remove all instances, and basically start from scratch: + QList<QCocoaTouch *> list = _currentTouches.values(); + foreach (QCocoaTouch *t, _currentTouches.values()) + delete t; + _currentTouches.clear(); + } +} + +QList<QTouchEvent::TouchPoint> QCocoaTouch::getCurrentTouchPointList(NSEvent *event) +{ + validateCurrentTouchList(event); + // Go through all the touchpoints in cocoa, find, or create, a QCocoaTouch for + // them, update them, and return the result: + QList<QTouchEvent::TouchPoint> touchPoints; + + NSSet *ended = [event touchesMatchingPhase:NSTouchPhaseEnded | NSTouchPhaseCancelled inView:nil]; + for (int i=0; i<int([ended count]); ++i) { + NSTouch *touch = [[ended allObjects] objectAtIndex:i]; + QCocoaTouch *qcocoaTouch = findQCocoaTouch(touch); + if (qcocoaTouch) { + qcocoaTouch->updateTouchData(touch, [touch phase]); + touchPoints.append(qcocoaTouch->_touchPoint); + delete qcocoaTouch; + } + } + + NSSet *began = [event touchesMatchingPhase:NSTouchPhaseBegan inView:nil]; + for (int i=0; i<int([began count]); ++i) { + NSTouch *touch = [[began allObjects] objectAtIndex:i]; + QCocoaTouch *qcocoaTouch = findQCocoaTouch(touch); + if (!qcocoaTouch) + qcocoaTouch = new QCocoaTouch(touch); + else + qcocoaTouch->updateTouchData(touch, [touch phase]); + touchPoints.append(qcocoaTouch->_touchPoint); + } + + NSSet *active = [event touchesMatchingPhase:NSTouchPhaseMoved | NSTouchPhaseStationary inView:nil]; + for (int i=0; i<int([active count]); ++i) { + NSTouch *touch = [[active allObjects] objectAtIndex:i]; + QCocoaTouch *qcocoaTouch = findQCocoaTouch(touch); + if (qcocoaTouch) { + qcocoaTouch->updateTouchData(touch, [touch phase]); + touchPoints.append(qcocoaTouch->_touchPoint); + } + } + + return touchPoints; +} + +#endif + +QT_END_NAMESPACE + +#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6 + |