smoother tooltip fade in

Signed-off-by: weisj <weisj@arcor.de>

core/src/main/java/com/github/weisj/darklaf/components/tooltip/DarkToolTip.java

@@ -54,12 +54,16 @@ public class DarkToolTip extends JToolTip implements PropertyChangeListener {
         addAncestorListener(new AncestorAdapter() {
             @Override
             public void ancestorAdded(final AncestorEvent event) {
-                setVisible(true);
+                boolean resume = false;
-                notifyToolTipListeners(ToolTipEvent.SHOWN);
                 if (Math.abs(System.currentTimeMillis() - lastHidden) < REPAINT_THRESHOLD) {
                     alpha = 1.0f;
                 } else {
                     alpha = 0;
+                    resume = true;
+                }
+                setVisible(true);
+                notifyToolTipListeners(ToolTipEvent.SHOWN);
+                if (resume) {
                     fadeAnimator.reset();
                     fadeAnimator.resume();
                 }

core/src/main/java/com/github/weisj/darklaf/ui/tooltip/DarkTooltipUI.java

@@ -193,7 +193,7 @@ public class DarkTooltipUI extends BasicToolTipUI implements PropertyChangeListe
     @Override
     public void hierarchyChanged(final HierarchyEvent e) {
         Window w = SwingUtilities.getWindowAncestor(toolTip);
-        if (w != null && !isDecorated(w) && w.getClass().getEnclosingClass().equals(Popup.class)) {
+        if (w != null && !isDecorated(w) && (w.getClass().getEnclosingClass().equals(Popup.class))) {
             w.setBackground(DarkUIUtil.TRANSPARENT_COLOR);
         }
     }