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/****************************************************************************
**
** 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
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