Don't block interactive moves by sync requests

The compositor doesn't need to synchronize with the client when moving
windows, except cases like unmaximizing the window. It's needed only
when resizing to avoid overwhelming the client with configure notify events.

src/window.cpp

@@ -1378,10 +1378,6 @@ void Window::updateInteractiveMoveResize(const QPointF &currentGlobalCursor)
 
 void Window::handleInteractiveMoveResize(const QPointF &local, const QPointF &global)
 {
-    if (isWaitingForInteractiveMoveResizeSync()) {
-        return; // we're still waiting for the client or the timeout
-    }
-
     const Gravity gravity = interactiveMoveResizeGravity();
     if ((gravity == Gravity::None && !isMovableAcrossScreens())
         || (gravity != Gravity::None && (isShade() || !isResizable()))) {
@@ -1407,17 +1403,19 @@ void Window::handleInteractiveMoveResize(const QPointF &local, const QPointF &gl
         setShade(ShadeNone);
     }
 
-    if (isInteractiveResize()) {
-        if (m_tile && m_tile->supportsResizeGravity(gravity)) {
-            m_tile->resizeFromGravity(gravity, global.x(), global.y());
-            return;
-        }
-    }
-
     const QRectF currentMoveResizeGeom = moveResizeGeometry();
     QRectF nextMoveResizeGeom = currentMoveResizeGeom;
 
     if (isInteractiveResize()) {
+        if (isWaitingForInteractiveResizeSync()) {
+            return; // we're still waiting for the client or the timeout
+        }
+
+        if (m_tile && m_tile->supportsResizeGravity(gravity)) {
+            m_tile->resizeFromGravity(gravity, global.x(), global.y());
+            return;
+        }
+
         nextMoveResizeGeom = nextInteractiveResizeGeometry(global);
         if (nextMoveResizeGeom != currentMoveResizeGeom) {
             doInteractiveResizeSync(nextMoveResizeGeom);
@@ -2470,7 +2468,7 @@ void Window::doFinishInteractiveMoveResize()
 {
 }
 
-bool Window::isWaitingForInteractiveMoveResizeSync() const
+bool Window::isWaitingForInteractiveResizeSync() const
 {
     return false;
 }

src/window.h

@@ -1667,7 +1667,7 @@ protected:
      * Whether a sync request is still pending.
      * Default implementation returns @c false.
      */
-    virtual bool isWaitingForInteractiveMoveResizeSync() const;
+    virtual bool isWaitingForInteractiveResizeSync() const;
     /**
      * Called during handling a resize. Implementing subclasses can use this
      * method to perform windowing system specific syncing.

src/x11window.cpp

@@ -4753,7 +4753,7 @@ void X11Window::leaveInteractiveMoveResize()
     Window::leaveInteractiveMoveResize();
 }
 
-bool X11Window::isWaitingForInteractiveMoveResizeSync() const
+bool X11Window::isWaitingForInteractiveResizeSync() const
 {
     return m_syncRequest.isPending && m_syncRequest.interactiveResize;
 }

src/x11window.h

@@ -344,7 +344,7 @@ protected:
     void doSetHiddenByShowDesktop() override;
     bool belongsToDesktop() const override;
     bool doStartInteractiveMoveResize() override;
-    bool isWaitingForInteractiveMoveResizeSync() const override;
+    bool isWaitingForInteractiveResizeSync() const override;
     void doInteractiveResizeSync(const QRectF &rect) override;
     QSizeF resizeIncrements() const override;
     bool acceptsFocus() const override;