QQuickWidget: pass enter and leave events to the offscreen window

By passing the enter and leave events to the offscreen window it will
enable mouse areas inside a QQuickWidget to know when the mouse has
actually entered or left the area if it is covering the whole item.

Task-number: QTBUG-45557
Change-Id: I670ebe30e367e919c73fed449bf2bed7ca42b5fd
Reviewed-by: Gatis Paeglis <gatis.paeglis@qt.io>

1 files changed, 9 insertions, 0 deletions

diff --git a/src/quickwidgets/qquickwidget.cpp b/src/quickwidgets/qquickwidget.cpp
index 4c4f5fa9f3..9e18ac2270 100644
--- a/src/quickwidgets/qquickwidget.cpp
+++ b/src/quickwidgets/qquickwidget.cpp
@@ -1398,6 +1398,7 @@ bool QQuickWidget::event(QEvent *e)
 
     switch (e->type()) {
 
+    case QEvent::Leave:
     case QEvent::TouchBegin:
     case QEvent::TouchEnd:
     case QEvent::TouchUpdate:
@@ -1451,6 +1452,14 @@ bool QQuickWidget::event(QEvent *e)
     case QEvent::ShortcutOverride:
         return QCoreApplication::sendEvent(d->offscreenWindow, e);
 
+    case QEvent::Enter: {
+        QEnterEvent *enterEvent = static_cast<QEnterEvent *>(e);
+        QEnterEvent mappedEvent(enterEvent->localPos(), enterEvent->windowPos(),
+                                enterEvent->screenPos());
+        const bool ret = QCoreApplication::sendEvent(d->offscreenWindow, &mappedEvent);
+        e->setAccepted(mappedEvent.isAccepted());
+        return ret;
+    }
     default:
         break;
     }