do not switch desktop on resizing windows

REVIEW: 123599

autotests/mock_client.cpp

@@ -85,6 +85,11 @@ void Client::setHiddenInternal(bool set)
     m_hiddenInternal = set;
 }
 
+bool Client::isResize() const
+{
+    return false;
+}
+
 void Client::setGeometry(const QRect &rect)
 {
     m_geometry = rect;

autotests/mock_client.h

@@ -38,6 +38,7 @@ public:
     bool isActive() const;
     bool isFullScreen() const;
     bool isHiddenInternal() const;
+    bool isResize() const;
     QRect geometry() const;
 
     void setActive(bool active);

screenedge.cpp

@@ -188,7 +188,8 @@ void Edge::handle(const QPoint &cursorPos)
         unreserve();
         return;
     }
-    if ((edges()->isDesktopSwitchingMovingClients() && Workspace::self()->getMovingClient()) ||
+    Client *movingClient = Workspace::self()->getMovingClient();
+    if ((edges()->isDesktopSwitchingMovingClients() && movingClient && !movingClient->isResize()) ||
         (edges()->isDesktopSwitching() && isScreenEdge())) {
         // always switch desktops in case:
         // moving a Client and option for switch on client move is enabled
@@ -196,7 +197,7 @@ void Edge::handle(const QPoint &cursorPos)
         switchDesktop(cursorPos);
         return;
     }
-    if (Workspace::self()->getMovingClient()) {
+    if (movingClient) {
         // if we are moving a window we don't want to trigger the actions. This just results in
         // problems, e.g. Desktop Grid activated or screen locker activated which just cannot
         // work as we hold a grab.