Backport multitouch bug fixes to 4.6

commit 24b811e53b30546279346ab7b16799be119ab8c4 on 4.7 includes bug
fixes which are needed for 4.6 as well.

1. TouchEnd event was missing
2. pressure in touchpoints was set to 0.0 for non pressure sensitive
   touch screens, it should be set to 1.0 for consistency with existing
   Qt ports (e.g. mac).

Task-number: QTBUG-10885
Reviewed-by: Bradley T. Hughes

2 files changed, 19 insertions, 7 deletions

diff --git a/src/gui/kernel/qapplication_p.h b/src/gui/kernel/qapplication_p.h
index ce3933400b..cf144c56ad 100644
--- a/src/gui/kernel/qapplication_p.h
+++ b/src/gui/kernel/qapplication_p.h
@@ -566,7 +566,8 @@ public:
     void _q_readRX71MultiTouchEvents();
 #endif
 
-#if defined(Q_WS_S60)
+#if defined(Q_OS_SYMBIAN)
+    int pressureSupported;
     int maxTouchPressure;
     QList<QTouchEvent::TouchPoint> appAllTouchPoints;
 #endif
diff --git a/src/gui/kernel/qapplication_s60.cpp b/src/gui/kernel/qapplication_s60.cpp
index dbdcef9342..6e6a806389 100644
--- a/src/gui/kernel/qapplication_s60.cpp
+++ b/src/gui/kernel/qapplication_s60.cpp
@@ -407,15 +407,22 @@ void QSymbianControl::HandleLongTapEventL( const TPoint& aPenEventLocation, cons
 void QSymbianControl::translateAdvancedPointerEvent(const TAdvancedPointerEvent *event)
 {
     QApplicationPrivate *d = QApplicationPrivate::instance();
+    qreal pressure;
+    if(d->pressureSupported
+        && event->Pressure() > 0) //workaround for misconfigured HAL
+        pressure = event->Pressure() / qreal(d->maxTouchPressure);
+    else
+        pressure = qreal(1.0);
 
     QRect screenGeometry = qApp->desktop()->screenGeometry(qwidget);
 
-    while (d->appAllTouchPoints.count() <= event->PointerNumber())
-        d->appAllTouchPoints.append(QTouchEvent::TouchPoint(d->appAllTouchPoints.count()));
+    QList<QTouchEvent::TouchPoint> points = d->appAllTouchPoints;
+    while (points.count() <= event->PointerNumber())
+        points.append(QTouchEvent::TouchPoint(points.count()));
 
     Qt::TouchPointStates allStates = 0;
-    for (int i = 0; i < d->appAllTouchPoints.count(); ++i) {
-        QTouchEvent::TouchPoint &touchPoint = d->appAllTouchPoints[i];
+    for (int i = 0; i < points.count(); ++i) {
+        QTouchEvent::TouchPoint &touchPoint = points[i];
 
         if (touchPoint.id() == event->PointerNumber()) {
             Qt::TouchPointStates state;
@@ -445,7 +452,7 @@ void QSymbianControl::translateAdvancedPointerEvent(const TAdvancedPointerEvent
             touchPoint.setNormalizedPos(QPointF(screenPos.x() / screenGeometry.width(),
                                                 screenPos.y() / screenGeometry.height()));
 
-            touchPoint.setPressure(event->Pressure() / qreal(d->maxTouchPressure));
+            touchPoint.setPressure(pressure);
         } else if (touchPoint.state() != Qt::TouchPointReleased) {
             // all other active touch points should be marked as stationary
             touchPoint.setState(Qt::TouchPointStationary);
@@ -457,11 +464,13 @@ void QSymbianControl::translateAdvancedPointerEvent(const TAdvancedPointerEvent
     if ((allStates & Qt::TouchPointStateMask) == Qt::TouchPointReleased) {
         // all touch points released
         d->appAllTouchPoints.clear();
+    } else {
+        d->appAllTouchPoints = points;
     }
 
     QApplicationPrivate::translateRawTouchEvent(qwidget,
                                                 QTouchEvent::TouchScreen,
-                                                d->appAllTouchPoints);
+                                                points);
 }
 #endif
 
@@ -1916,6 +1925,8 @@ TUint QApplicationPrivate::resolveS60ScanCode(TInt scanCode, TUint keysym)
 void QApplicationPrivate::initializeMultitouch_sys()
 {
 #ifdef QT_SYMBIAN_SUPPORTS_ADVANCED_POINTER
+    if (HAL::Get(HALData::EPointer3DPressureSupported, pressureSupported) != KErrNone)
+        pressureSupported = 0;
     if (HAL::Get(HALData::EPointer3DMaxPressure, maxTouchPressure) != KErrNone)
         maxTouchPressure = KMaxTInt;
 #endif