🎨 Palette: Add tooltips to audio and video player controls

.jules/bolt.md

@@ -57,3 +57,6 @@
 ## 2025-10-29 - [Stream Allocation and O(N^2) trap in HomeTimelineFragment]
 **Learning:** `HomeTimelineFragment.loadNewPosts` used a Java Stream to collect `existingIds` into a `List`, and then called `toAdd.removeIf(s -> existingIds.contains(s.getID()))`. Since `List.contains` is O(N), this created an O(N * M) operation in a hot path, causing both allocation overhead from Streams and quadratic performance degradation for duplicate checking.
 **Action:** Replaced the Stream with a simple `for` loop that populates a `HashSet<String>`. This eliminates the Stream allocations and reduces the time complexity of the duplicate check from O(N * M) to O(N + M) because `HashSet.contains` is O(1). Additionally, replaced other `Optional` and `Stream` usages in `loadNewPosts` and `onGapClick` with simple loops to further reduce GC pressure.
+## 2025-02-12 - [Dynamic TooltipText Parity for Icon-only Buttons]
+**Learning:** When dynamically updating the `contentDescription` of icon-only buttons (like play/pause states) in Java code, the `tooltipText` attribute must also be updated to ensure continued accessibility support for hover and long-press interactions.
+**Action:** Always mirror `setContentDescription()` calls with `setTooltipText()` (wrapped in `Build.VERSION.SDK_INT >= Build.VERSION_CODES.O`) for icon-only interactive elements.

mastodon/src/main/java/de/icod/techidon/ui/displayitems/AudioStatusDisplayItem.java

@@ -216,7 +216,11 @@ private void updateColors(int mainColor){
 
 		private void setPlayButtonPlaying(boolean playing, boolean animated){
 			playPauseBtn.setImageResource(playing ? R.drawable.ic_fluent_pause_48_regular : R.drawable.ic_fluent_play_48_regular);
-			playPauseBtn.setContentDescription(item.parentFragment.getString(playing ? R.string.pause : R.string.play));
+			String desc = item.parentFragment.getString(playing ? R.string.pause : R.string.play);
+			playPauseBtn.setContentDescription(desc);
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+				playPauseBtn.setTooltipText(desc);
+			}
 			if(playing)
 				bgDrawable.startAnimation();
 			else

mastodon/src/main/java/de/icod/techidon/ui/photoviewer/PhotoViewer.java

@@ -692,7 +692,11 @@ private void pauseVideo(){
 			return;
 		holder.player.pause();
 		videoPlayPauseButton.setImageResource(R.drawable.ic_fluent_play_24_filled);
-		videoPlayPauseButton.setContentDescription(activity.getString(R.string.play));
+		String desc = activity.getString(R.string.play);
+		videoPlayPauseButton.setContentDescription(desc);
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+			videoPlayPauseButton.setTooltipText(desc);
+		}
 		stopUpdatingVideoPosition();
 		windowView.removeCallbacks(uiAutoHider);
 		// Some MediaPlayer implementations clear the texture when the app goes into background.
@@ -706,7 +710,11 @@ private void resumeVideo(){
 			return;
 		player.start();
 		videoPlayPauseButton.setImageResource(R.drawable.ic_fluent_pause_24_filled);
-		videoPlayPauseButton.setContentDescription(activity.getString(R.string.pause));
+		String desc = activity.getString(R.string.pause);
+		videoPlayPauseButton.setContentDescription(desc);
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+			videoPlayPauseButton.setTooltipText(desc);
+		}
 		startUpdatingVideoPosition(player);
 	}
 
@@ -1161,7 +1169,11 @@ public void onSeekComplete(MediaPlayer mp){
 		@Override
 		public void onCompletion(MediaPlayer mp){
 			videoPlayPauseButton.setImageResource(R.drawable.ic_fluent_play_24_filled);
-			videoPlayPauseButton.setContentDescription(activity.getString(R.string.play));
+			String desc = activity.getString(R.string.play);
+			videoPlayPauseButton.setContentDescription(desc);
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+				videoPlayPauseButton.setTooltipText(desc);
+			}
 			stopUpdatingVideoPosition();
 			if(!uiVisible)
 				toggleUI();

mastodon/src/main/res/layout/display_item_audio.xml

@@ -38,13 +38,15 @@
 			android:layout_height="96dp"
 			android:background="@drawable/bg_audio_play_button"
 			android:contentDescription="@string/play"
+			android:tooltipText="@string/play"
 			android:layout_gravity="center"
 			android:tint="?colorM3DarkOnSurface"
 			android:src="@drawable/ic_fluent_play_48_regular"/>
 
 		<ImageButton
 			android:id="@+id/forward_btn"
 			android:contentDescription="@string/seek_forward_10_seconds"
+			android:tooltipText="@string/seek_forward_10_seconds"
 			android:layout_width="96dp"
 			android:layout_height="96dp"
 			android:layout_gravity="center_vertical|end"
@@ -56,6 +58,7 @@
 		<ImageButton
 			android:id="@+id/rewind_btn"
 			android:contentDescription="@string/seek_rewind_5_seconds"
+			android:tooltipText="@string/seek_rewind_5_seconds"
 			android:layout_width="96dp"
 			android:layout_height="96dp"
 			android:layout_gravity="center_vertical|start"

mastodon/src/main/res/layout/photo_viewer_ui.xml

@@ -57,6 +57,7 @@
 				android:src="@drawable/ic_fluent_pause_24_filled"
 				android:tint="?colorGray50"
 				android:contentDescription="@string/pause"
+				android:tooltipText="@string/pause"
 				android:background="?android:selectableItemBackgroundBorderless"/>
 
 			<TextView