Multitouch, Cocoa: First revision of multi touch in Qt/Cocoa

7 files changed, 410 insertions, 12 deletions

diff --git a/src/gui/kernel/kernel.pri b/src/gui/kernel/kernel.pri
index 3016afb..2917592 100644
--- a/src/gui/kernel/kernel.pri
+++ b/src/gui/kernel/kernel.pri
@@ -177,24 +177,26 @@ embedded {
                 qcocoaview_mac_p.h \
                 qcocoaapplication_mac_p.h \
                 qcocoaapplicationdelegate_mac_p.h \
+                qmultitouch_mac_p.h 
 
         OBJECTIVE_SOURCES += \
                 kernel/qcursor_mac.mm \
                 kernel/qdnd_mac.mm \
                 kernel/qsound_mac.mm  \
                 kernel/qapplication_mac.mm \
-		kernel/qwidget_mac.mm \
-		kernel/qcocoapanel_mac.mm \
-		kernel/qcocoaview_mac.mm \
-		kernel/qcocoawindow_mac.mm \
-		kernel/qcocoawindowdelegate_mac.mm \
+		        kernel/qwidget_mac.mm \
+		        kernel/qcocoapanel_mac.mm \
+                kernel/qcocoaview_mac.mm \
+                kernel/qcocoawindow_mac.mm \
+                kernel/qcocoawindowdelegate_mac.mm \
                 kernel/qcocoamenuloader_mac.mm \
                 kernel/qcocoaapplication_mac.mm \
                 kernel/qcocoaapplicationdelegate_mac.mm \
                 kernel/qt_cocoa_helpers_mac.mm \
-		kernel/qdesktopwidget_mac.mm \
+                kernel/qdesktopwidget_mac.mm \
                 kernel/qeventdispatcher_mac.mm \
-                kernel/qcocoawindowcustomthemeframe_mac.mm
+                kernel/qcocoawindowcustomthemeframe_mac.mm \   
+                kernel/qmultitouch_mac.mm \
 
         HEADERS += \
                 kernel/qt_cocoa_helpers_mac_p.h \
diff --git a/src/gui/kernel/qcocoaview_mac.mm b/src/gui/kernel/qcocoaview_mac.mm
index 3d0bafa..9aa4dd2 100644
--- a/src/gui/kernel/qcocoaview_mac.mm
+++ b/src/gui/kernel/qcocoaview_mac.mm
@@ -49,6 +49,7 @@
 #include <private/qt_cocoa_helpers_mac_p.h>
 #include <private/qdnd_p.h>
 #include <private/qmacinputcontext_p.h>
+#include <private/qmultitouch_mac_p.h>
 
 #include <qscrollarea.h>
 #include <qhash.h>
@@ -68,6 +69,7 @@ Q_GLOBAL_STATIC(DnDParams, qMacDnDParams);
 
 extern void qt_mac_update_cursor_at_global_pos(const QPoint &globalPos); // qcursor_mac.mm
 extern bool qt_sendSpontaneousEvent(QObject *, QEvent *); // qapplication.cpp
+extern bool qt_translateRawTouchEvent(const QList<QTouchEvent::TouchPoint> &touchPoints, QWidget *window); // qapplication.cpp
 extern OSViewRef qt_mac_nativeview_for(const QWidget *w); // qwidget_mac.mm
 extern const QStringList& qEnabledDraggedTypes(); // qmime_mac.cpp
 extern QPointer<QWidget> qt_mouseover; //qapplication_mac.mm
@@ -702,6 +704,11 @@ extern "C" {
 
 - (void)mouseUp:(NSEvent *)theEvent
 {
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_6)
+        QCocoaTouch::setMouseInDraggingState(false);
+#endif
+
     bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonRelease, Qt::LeftButton);
 
     if (!mouseOK)
@@ -709,7 +716,7 @@ extern "C" {
 }
 
 - (void)rightMouseDown:(NSEvent *)theEvent
-{        
+{
     bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseButtonPress, Qt::RightButton);
 
     if (!mouseOK)
@@ -745,6 +752,11 @@ extern "C" {
 
 - (void)mouseDragged:(NSEvent *)theEvent
 {
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_6)
+        QCocoaTouch::setMouseInDraggingState(true);
+#endif
+
     qMacDnDParams()->view = self;
     qMacDnDParams()->theEvent = theEvent;
     bool mouseOK = qt_mac_handleMouseEvent(self, theEvent, QEvent::MouseMove, Qt::LeftButton);
@@ -868,6 +880,58 @@ extern "C" {
         [super tabletPoint:tabletEvent];
 }
 
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+- (void)touchesBeganWithEvent:(NSEvent *)event; 
+{
+    qt_translateRawTouchEvent(QCocoaTouch::getCurrentTouchPointList(event), qwidget);
+}
+
+- (void)touchesMovedWithEvent:(NSEvent *)event;
+{
+    qt_translateRawTouchEvent(QCocoaTouch::getCurrentTouchPointList(event), qwidget);
+}
+
+- (void)touchesEndedWithEvent:(NSEvent *)event;
+{
+    qt_translateRawTouchEvent(QCocoaTouch::getCurrentTouchPointList(event), qwidget);
+}
+
+- (void)touchesCancelledWithEvent:(NSEvent *)event;
+{
+    qt_translateRawTouchEvent(QCocoaTouch::getCurrentTouchPointList(event), qwidget);
+}
+
+- (void)magnifyWithEvent:(NSEvent *)event;
+{
+    Q_UNUSED(event);
+//    qDebug() << "magnifyWithEvent";
+}
+
+- (void)rotateWithEvent:(NSEvent *)event;
+{
+    Q_UNUSED(event);
+//    qDebug() << "rotateWithEvent";
+}
+
+- (void)swipeWithEvent:(NSEvent *)event;
+{
+    Q_UNUSED(event);
+//    qDebug() << "swipeWithEvent";
+}
+
+- (void)beginGestureWithEvent:(NSEvent *)event;
+{
+    Q_UNUSED(event);
+//    qDebug() << "beginGestureWithEvent";
+}
+
+- (void)endGestureWithEvent:(NSEvent *)event;
+{
+    Q_UNUSED(event);
+//    qDebug() << "endGestureWithEvent";
+}
+#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+
 - (void)frameDidChange:(NSNotification *)note
 {
     Q_UNUSED(note);
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
+
diff --git a/src/gui/kernel/qmultitouch_mac_p.h b/src/gui/kernel/qmultitouch_mac_p.h
new file mode 100644
index 0000000..92ed11a
--- /dev/null
+++ b/src/gui/kernel/qmultitouch_mac_p.h
@@ -0,0 +1,103 @@
+/****************************************************************************
+**
+** 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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QMULTITOUCH_MAC_P_H
+#define QMULTITOUCH_MAC_P_H
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+
+#ifdef QT_MAC_USE_COCOA
+#import <Cocoa/Cocoa.h>
+#endif
+
+#include <qevent.h>
+#include <qhash.h>
+#include <QtCore>
+
+QT_BEGIN_NAMESPACE
+
+#ifdef QT_MAC_USE_COCOA
+
+class QCocoaTouch
+{
+    public:
+        static QList<QTouchEvent::TouchPoint> getCurrentTouchPointList(NSEvent *event);
+        static void setMouseInDraggingState(bool inDraggingState);
+
+    private:
+        static QHash<int, QCocoaTouch*> _currentTouches;
+        static QPointF _screenReferencePos;
+        static QPointF _trackpadReferencePos;
+        static bool _inMouseDraggingState;
+        static int _idAssignmentCount;
+
+        QTouchEvent::TouchPoint _touchPoint;
+        QPointF _trackpadPos;
+        int _identity;
+
+        QCocoaTouch(NSTouch *nstouch);
+        ~QCocoaTouch();
+
+        void updateTouchData(NSTouch *nstouch, NSTouchPhase phase);
+        static QCocoaTouch *findQCocoaTouch(NSTouch *nstouch);
+        static Qt::TouchPointState toTouchPointState(NSTouchPhase nsState);
+        static void validateCurrentTouchList(NSEvent *event);
+};
+
+#endif // QT_MAC_USE_COCOA
+
+QT_END_NAMESPACE
+
+#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+
+#endif // QMULTITOUCH_MAC_P_H
+
diff --git a/src/gui/kernel/qwidget.cpp b/src/gui/kernel/qwidget.cpp
index 8dd32f5..304d72a 100644
--- a/src/gui/kernel/qwidget.cpp
+++ b/src/gui/kernel/qwidget.cpp
@@ -9928,12 +9928,12 @@ void QWidget::setAttribute(Qt::WidgetAttribute attribute, bool on)
         }
 
         break;
-#if defined(Q_WS_WIN)
     case Qt::WA_AcceptTouchEvents:
+#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
         if (on)
             d->registerTouchWindow();
-        break;
 #endif
+        break;
     default:
         break;
     }
diff --git a/src/gui/kernel/qwidget_mac.mm b/src/gui/kernel/qwidget_mac.mm
index ad80f15..2dda15d 100644
--- a/src/gui/kernel/qwidget_mac.mm
+++ b/src/gui/kernel/qwidget_mac.mm
@@ -2512,9 +2512,10 @@ void QWidgetPrivate::create_sys(WId window, bool initializeWindow, bool destroyO
         setFocus_sys();
     if (!topLevel && initializeWindow)
         setWSGeometry();
-
     if (destroyid)
         qt_mac_destructView(destroyid);
+    if (q->testAttribute(Qt::WA_AcceptTouchEvents))
+        registerTouchWindow();
 }
 
 /*!
@@ -4491,6 +4492,23 @@ void QWidgetPrivate::registerDropSite(bool on)
 #endif
 }
 
+void QWidgetPrivate::registerTouchWindow()
+{
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_6
+    if (QSysInfo::MacintoshVersion < QSysInfo::MV_10_6)
+        return;
+    Q_Q(QWidget);
+    if (!q->testAttribute(Qt::WA_WState_Created))
+        return;
+#ifndef QT_MAC_USE_COCOA
+    // Needs implementation!
+#else
+    NSView *view = qt_mac_nativeview_for(q);
+    [view setAcceptsTouchEvents:YES];
+#endif
+#endif
+}
+
 void QWidgetPrivate::setMask_sys(const QRegion &region)
 {
     Q_UNUSED(region);
diff --git a/src/gui/kernel/qwidget_p.h b/src/gui/kernel/qwidget_p.h
index cf065d3..d597a50 100644
--- a/src/gui/kernel/qwidget_p.h
+++ b/src/gui/kernel/qwidget_p.h
@@ -541,6 +541,10 @@ public:
     uint usesDoubleBufferedGLContext : 1;
 
     // *************************** Platform specific ************************************
+#if defined(Q_WS_X11) || defined(Q_WS_MAC)
+    void registerTouchWindow();
+#endif
+
 #if defined(Q_WS_X11) // <----------------------------------------------------------- X11
     QX11Info xinfo;
     Qt::HANDLE picture;
@@ -563,7 +567,6 @@ public:
     void unregisterOleDnd(QWidget *widget, QOleDropTarget *target);
 #endif
     void grabMouseWhileInWindow();
-    void registerTouchWindow();
 #elif defined(Q_WS_MAC) // <--------------------------------------------------------- MAC
     // This is new stuff
     uint needWindowChange : 1;