effects: Make effects responsible for handling skipsCloseAnimation flag

This allows to make painting code more generic.

src/effects/fade/package/contents/code/main.js

@@ -82,7 +82,7 @@ class FadeEffect {
         if (effects.hasActiveFullScreenEffect) {
             return;
         }
-        if (!this.fadeWindows || !FadeEffect.isFadeWindow(window)) {
+        if (!this.fadeWindows || window.skipsCloseAnimation || !FadeEffect.isFadeWindow(window)) {
             return;
         }
         window.fadeOutAnimation = animate({

src/effects/fadingpopups/package/contents/code/main.js

@@ -99,7 +99,7 @@ var fadingPopupsEffect = {
         if (!isPopupWindow(window)) {
             return;
         }
-        if (!window.visible) {
+        if (!window.visible || window.skipsCloseAnimation) {
             return;
         }
         if (!effect.grab(window, Effect.WindowClosedGrabRole)) {

src/effects/glide/glide.cpp

@@ -237,7 +237,7 @@ void GlideEffect::windowClosed(EffectWindow *w)
         return;
     }
 
-    if (!w->isVisible()) {
+    if (!w->isVisible() || w->skipsCloseAnimation()) {
         return;
     }
 

src/effects/scale/package/contents/code/main.js

@@ -126,7 +126,7 @@ class ScaleEffect {
         if (!ScaleEffect.isScaleWindow(window)) {
             return;
         }
-        if (!window.visible) {
+        if (!window.visible || window.skipsCloseAnimation) {
             return;
         }
         if (!effect.grab(window, Effect.WindowClosedGrabRole)) {

src/effects/sheet/sheet.cpp

@@ -182,7 +182,7 @@ void SheetEffect::slotWindowClosed(EffectWindow *w)
         return;
     }
 
-    if (!isSheetWindow(w)) {
+    if (!isSheetWindow(w) || w->skipsCloseAnimation()) {
         return;
     }
 

src/scene.cpp

@@ -511,10 +511,6 @@ void Scene::paintWindow(Window* w, int mask, const QRegion &_region)
     const QRegion region = _region & QRect({0, 0}, screens()->size());
     if (region.isEmpty())  // completely clipped
         return;
-    if (w->window()->isDeleted() && w->window()->skipsCloseAnimation()) {
-        // should not get painted
-        return;
-    }
 
     WindowPaintData data(w->window()->effectWindow(), screenProjectionMatrix());
     effects->paintWindow(effectWindow(w), mask, region, data);