Reduce draw-only statusbar work

app/src/main/java/se/ajpanton/statusbartweak/runtime/features/clock/DrawerClockTextController.java

@@ -104,6 +104,10 @@ final class DrawerClockTextController {
         untrackDisabledRoles(clockEnabled, dateEnabled);
 
         SurfaceMode surfaceMode = scene != null ? scene.surfaceMode() : null;
+        if (!root.isLayoutRequested()
+                && hasAttachedCachedCandidates(root, clockEnabled, dateEnabled, surfaceMode)) {
+            return;
+        }
         if (hasValidTrackedCandidates(root, clockEnabled, dateEnabled, surfaceMode)) {
             return;
         }
@@ -200,6 +204,28 @@ final class DrawerClockTextController {
         return false;
     }
 
+    private boolean hasAttachedCachedCandidates(
+            View root,
+            boolean clockEnabled,
+            boolean dateEnabled,
+            SurfaceMode surfaceMode
+    ) {
+        CandidateCache cache = candidateCacheByRoot.get(root);
+        if (cache == null || cache.surfaceMode != surfaceMode) {
+            return false;
+        }
+        return (!clockEnabled || isAttachedCachedCandidate(cache.clockView, Role.CLOCK))
+                && (!dateEnabled || isAttachedCachedCandidate(cache.dateView, Role.DATE));
+    }
+
+    private boolean isAttachedCachedCandidate(WeakReference<TextView> reference, Role role) {
+        TextView textView = reference != null ? reference.get() : null;
+        return textView != null
+                && textView.isAttachedToWindow()
+                && trackedRoles.get(textView) == role
+                && ownedTexts.contains(textView);
+    }
+
     private void track(TextView textView, Role role) {
         if (textView == null || role == null) {
             return;

app/src/main/java/se/ajpanton/statusbartweak/runtime/layout/StockLayoutCanvasController.java

@@ -2402,6 +2402,16 @@ final class StockLayoutCanvasController {
         boolean unlockedScene = activeScene != null && activeScene.isUnlocked();
         boolean aodScene = activeScene != null && activeScene.isAod();
         boolean rootDirty = dirtyUnlockedLayoutRoots.remove(root);
+        if (canSkipStableDrawOnlyApply(root, activeScene, rootDirty)) {
+            if (unlockedScene) {
+                syncUnlockedHostsToStockStatusBar(root, activeScene);
+                hideTrackedUnlockedStockSurfaces(root);
+                hideTrackedStatusChipSources(root);
+            } else {
+                bringUnlockedHostsAndDebugOverlayToFront(root);
+            }
+            return;
+        }
         boolean aodLayoutRoot = aodScene && isAodLayoutRoot(root, activeScene);
         boolean hasAodLayoutPlan = aodScene && unlockedIconRenderController.hasLayoutPlan(root);
         boolean layoutRoot = aodScene ? aodLayoutRoot : statusBarRoot;
@@ -2551,6 +2561,35 @@ final class StockLayoutCanvasController {
         });
     }
 
+    private boolean canSkipStableDrawOnlyApply(
+            View root,
+            SceneKey scene,
+            boolean rootDirty
+    ) {
+        if (root == null
+                || scene == null
+                || (!scene.isUnlocked() && !scene.isLockscreen())
+                || root.isLayoutRequested()) {
+            return false;
+        }
+        if (rootDirty) {
+            return false;
+        }
+        if (!hasDirectUnlockedLayoutHost(root)) {
+            return false;
+        }
+        if (!unlockedIconRenderController.hasLayoutPlan(root)) {
+            return false;
+        }
+        if (isKnownRootGeometryChanged(root)) {
+            return false;
+        }
+        if (scene.isUnlocked() && !hasTrackedUnlockedStockSurfaces(root)) {
+            return false;
+        }
+        return true;
+    }
+
     private void hideTrackedUnlockedStockSurfaces(View root) {
         if (root == null || trackedUnlockedStockSurfaces.isEmpty()) {
             return;