Fix and test PinchHandler native-gesture scaling

We didn't have test coverage for several gesture events in a row (the
usual case in reality), nor for RotateNativeGesture at all. Amends
a432970b258edb9ff041d221b2155df30cad4799 which incorrectly treated
QNativeGestureEvent::value() as an absolute zoom rather than a delta.

Fixes: QTBUG-111204
Change-Id: Ib95cab5cd3f97229abac1668e59d20ce50d24975
Reviewed-by: Doris Verria <[email protected]>
(cherry picked from commit a05cbaaae505dba2546c593e22fe2f9047c0de4b)
Reviewed-by: Qt Cherry-pick Bot <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/quick/handlers/qquickpinchhandler.cpp b/src/quick/handlers/qquickpinchhandler.cpp
index 00a6e8c8ee..4880457c63 100644
--- a/src/quick/handlers/qquickpinchhandler.cpp
+++ b/src/quick/handlers/qquickpinchhandler.cpp
@@ -524,7 +524,7 @@ void QQuickPinchHandler::handlePointerEventImpl(QPointerEvent *event)
             emit updated();
             return;
         case Qt::ZoomNativeGesture:
-            setActiveScale(1 + gesture->value());
+            setActiveScale(m_scaleAxis.activeValue() * (1 + gesture->value()));
             break;
         case Qt::RotateNativeGesture:
             setActiveRotation(m_rotationAxis.activeValue() + gesture->value());