WIP: Add ignoreSurfacePointerEventExclusiveGrabber property for WSeat

src/server/kernel/wseat.cpp

@@ -401,6 +401,7 @@ class Q_DECL_HIDDEN WSeatPrivate : public WWrapObjectPrivate
     WGlobal::CursorShape cursorShape = WGlobal::CursorShape::Invalid;
 
     QPointer<WSurface> dragSurface;
+    bool ignoreSurfacePointerEventExclusiveGrabber = false;
 };
 
 void WSeatPrivate::on_destroy()
@@ -803,6 +804,19 @@ bool WSeat::sendEvent(WSurface *target, QObject *shellObject, QObject *eventObje
 
     event->accept();
 
+    if (d->ignoreSurfacePointerEventExclusiveGrabber && event->isPointerEvent()) {
+        auto pe = static_cast<QPointerEvent*>(event);
+        if (pe->isBeginEvent()) {
+            for (const auto &point : pe->points()) {
+                auto grabber = pe->exclusiveGrabber(point);
+                // Qt will auto grab the pointer event for QQuickItem when mouse pressed until mouse released.
+                // But we want always update the HoverEnter/Leave's WSurfaceItem between drag move.
+                if (grabber == target)
+                    pe->setExclusiveGrabber(point, nullptr);
+            }
+        }
+    }
+
     switch (event->type()) {
     case QEvent::HoverEnter: {
         auto e = static_cast<QHoverEvent*>(event);
@@ -1034,6 +1048,21 @@ void WSeat::setKeyboard(WInputDevice *newKeyboard)
     Q_EMIT this->keyboardChanged();
 }
 
+bool WSeat::ignoreSurfacePointerEventExclusiveGrabber() const
+{
+    W_DC(WSeat);
+    return d->ignoreSurfacePointerEventExclusiveGrabber;
+}
+
+void WSeat::setIgnoreSurfacePointerEventExclusiveGrabber(bool newIgnoreSurfacePointerEventExclusiveGrabber)
+{
+    W_D(WSeat);
+    if (d->ignoreSurfacePointerEventExclusiveGrabber == newIgnoreSurfacePointerEventExclusiveGrabber)
+        return;
+    d->ignoreSurfacePointerEventExclusiveGrabber = newIgnoreSurfacePointerEventExclusiveGrabber;
+    Q_EMIT ignoreSurfacePointerEventExclusiveGrabberChanged();
+}
+
 void WSeat::notifyMotion(WCursor *cursor, WInputDevice *device, uint32_t timestamp)
 {
     W_D(WSeat);

src/server/kernel/wseat.h

@@ -57,6 +57,7 @@ class WAYLIB_SERVER_EXPORT WSeat : public WWrapObject, public WServerInterface
     W_DECLARE_PRIVATE(WSeat)
     Q_PROPERTY(WInputDevice* keyboard READ keyboard WRITE setKeyboard NOTIFY keyboardChanged FINAL)
     Q_PROPERTY(WSurface* keyboardFocus READ keyboardFocusSurface WRITE setKeyboardFocusSurface NOTIFY keyboardFocusSurfaceChanged FINAL)
+    Q_PROPERTY(bool ignoreSurfacePointerEventExclusiveGrabber READ ignoreSurfacePointerEventExclusiveGrabber WRITE setIgnoreSurfacePointerEventExclusiveGrabber NOTIFY ignoreSurfacePointerEventExclusiveGrabberChanged FINAL)
 
 public:
     WSeat(const QString &name = QStringLiteral("seat0"));
@@ -99,12 +100,16 @@ class WAYLIB_SERVER_EXPORT WSeat : public WWrapObject, public WServerInterface
     WInputDevice *keyboard() const;
     void setKeyboard(WInputDevice *newKeyboard);
 
+    bool ignoreSurfacePointerEventExclusiveGrabber() const;
+    void setIgnoreSurfacePointerEventExclusiveGrabber(bool newIgnoreSurfacePointerEventExclusiveGrabber);
+
 Q_SIGNALS:
     void keyboardChanged();
     void keyboardFocusSurfaceChanged();
     void requestCursorShape(WAYLIB_SERVER_NAMESPACE::WGlobal::CursorShape shape);
     void requestCursorSurface(WAYLIB_SERVER_NAMESPACE::WSurface *surface, const QPoint &hotspot);
     void requestDrag(WAYLIB_SERVER_NAMESPACE::WSurface *surface);
+    void ignoreSurfacePointerEventExclusiveGrabberChanged();
 
 protected:
     using QObject::eventFilter;