Add HoverHandler to detect a hovering mouse pointer

Detect whether the handler's parent contains the mouse, while the
point property tracks the event point (position etc.)

Task-number: QTBUG-68072
Change-Id: Ica99332596eab3e344852a11f1ceb7aaf6348c86
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Jan Arve Sæther <jan-arve.saether@qt.io>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/quick/items/qquickitem.cpp b/src/quick/items/qquickitem.cpp
index 01413385d9..3b1402fe16 100644
--- a/src/quick/items/qquickitem.cpp
+++ b/src/quick/items/qquickitem.cpp
@@ -67,6 +67,7 @@
 #include <QtQuick/private/qquickstate_p.h>
 #include <private/qquickitem_p.h>
 #include <QtQuick/private/qquickaccessibleattached_p.h>
+#include <QtQuick/private/qquickhoverhandler_p.h>
 #include <QtQuick/private/qquickpointerhandler_p.h>
 
 #include <private/qv4engine_p.h>
@@ -7342,6 +7343,8 @@ void QQuickItemPrivate::setHasHoverInChild(bool hasHover)
             QQuickItemPrivate *otherChildPrivate = QQuickItemPrivate::get(otherChild);
             if (otherChildPrivate->subtreeHoverEnabled || otherChildPrivate->hoverEnabled)
                 return; // nope! sorry, something else wants it kept on.
+            if (otherChildPrivate->hasHoverHandlers())
+                return; // nope! sorry, we have pointer handlers which are interested.
         }
     }
 
@@ -8095,6 +8098,16 @@ bool QQuickItemPrivate::hasPointerHandlers() const
     return extra.isAllocated() && !extra->pointerHandlers.isEmpty();
 }
 
+bool QQuickItemPrivate::hasHoverHandlers() const
+{
+    if (!hasPointerHandlers())
+        return false;
+    for (QQuickPointerHandler *h : extra->pointerHandlers)
+        if (qmlobject_cast<QQuickHoverHandler *>(h))
+            return true;
+    return false;
+}
+
 #if QT_CONFIG(quick_shadereffect)
 QQuickItemLayer::QQuickItemLayer(QQuickItem *item)
     : m_item(item)