Improve QEvent::UngrabMouse handling in map gesture area

Replace deprecated QQuickWindow::mouseGrabberItem() check and pass on all
QEvent::UngrabMouse events into general
'QQuickGeoMapGestureArea::handleTouchEvent' handler. This will handle
'exclusiveGrabber' and 'QEventPoint::Released' events separately for all
points.

This will now correctly handle the situation where child MouseArea:
1. Grabs first touch point with 'press and hold'
2. Second finger is pressed.
3. First finger is released and 'ungrabbed'.
4. Second finger will start panning the map.

Task-number: QTBUG-96795
Change-Id: Ieb3418787e89aadd1a7c0c8ab9b1f965a4484c24
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit a94cefd446dd192172f47f183b56bbb719e95ee4)

1 files changed, 3 insertions, 13 deletions

diff --git a/src/location/declarativemaps/qdeclarativegeomap.cpp b/src/location/declarativemaps/qdeclarativegeomap.cpp
index 8a153deb..38c554f4 100644
--- a/src/location/declarativemaps/qdeclarativegeomap.cpp
+++ b/src/location/declarativemaps/qdeclarativegeomap.cpp
@@ -2575,19 +2575,9 @@ bool QDeclarativeGeoMap::childMouseEventFilter(QQuickItem *item, QEvent *event)
             }
         }
         break;
-    case QEvent::UngrabMouse: {
-        QQuickWindow *win = window();
-        if (!win) break;
-        if (!win->mouseGrabberItem() ||
-                (win->mouseGrabberItem() &&
-                 win->mouseGrabberItem() != this)) {
-            // child lost grab, we could even lost
-            // some events if grab already belongs for example
-            // in item in diffrent window , clear up states
-            mouseUngrabEvent();
-        }
-        break;
-    }
+    case QEvent::UngrabMouse:
+        Q_ASSERT(event->isSinglePointEvent());
+        return sendTouchEvent(static_cast<QSinglePointEvent*>(event));
     default:
         break;
     }