From cf16a0db57b2f2111eadd304bdab6814f3578c39 Mon Sep 17 00:00:00 2001
From: iusmac <iusico.maxim@libero.it>
Date: Sun, 17 May 2026 11:06:03 +0200
Subject: [PATCH] haptics: Allow to set predefined feedback for texture tick
 effect

Currently, the texture soft ticks will play only if there's a
hardware-specific implementation. So, there may be no haptic feedback at
all in actions called repeatedly (e.g., when dragging a slider thumb or
when performing a back gesture). This is the case for most older
devices, see [1].

This CL allows to configure the wave timings via overlay to replicate
the texture tick effect implementation. The start & end time values may
need to be tuned, so it's not too disruptive to the user.

NOTE: when set, this will ignore the hardware-specific implementation,
if any (assuming none).

[1]: https://github.com/crdroidandroid/issue_tracker/issues/14

Signed-off-by: iusmac <iusico.maxim@libero.it>
---
 core/res/res/values/cr_config.xml                   | 13 +++++++++++++
 core/res/res/values/cr_symbols.xml                  |  3 +++
 .../android/server/vibrator/VibrationSettings.java  |  6 ++++--
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/core/res/res/values/cr_config.xml b/core/res/res/values/cr_config.xml
index 19ee1f72a3143..baa4db267c516 100644
--- a/core/res/res/values/cr_config.xml
+++ b/core/res/res/values/cr_config.xml
@@ -95,4 +95,17 @@
 
     <!-- Whether to cancel fingerprint operation if not idle -->
     <bool name="config_fpCancelIfNotIdle">false</bool>
+
+    <!-- Vibrator pattern for feedback meant to replicate soft ticks (feels like texture underneath
+         the user's fingers), in gestures called repeatedly (such as dragging a slider thumb).
+
+         This is supposed to be used as a fallback pattern when hardware-specific implementation of
+         the effect does not exist, but it will still take over if the timings array is not empty.
+    -->
+    <integer-array name="config_textureTickVibePattern">
+        <!--
+        <item>0</item>
+        <item>10</item>
+        -->
+    </integer-array>
 </resources>
diff --git a/core/res/res/values/cr_symbols.xml b/core/res/res/values/cr_symbols.xml
index 9f025f9adc98f..1119ae01b46aa 100644
--- a/core/res/res/values/cr_symbols.xml
+++ b/core/res/res/values/cr_symbols.xml
@@ -76,4 +76,7 @@
 
     <!-- GameSpace -->
     <java-symbol type="string" name="gamespace_new_game_added" />
+
+    <!-- Vibrator service -->
+    <java-symbol type="array" name="config_textureTickVibePattern" />
 </resources>
diff --git a/services/core/java/com/android/server/vibrator/VibrationSettings.java b/services/core/java/com/android/server/vibrator/VibrationSettings.java
index 46f42feb329af..b7738a3d3f410 100644
--- a/services/core/java/com/android/server/vibrator/VibrationSettings.java
+++ b/services/core/java/com/android/server/vibrator/VibrationSettings.java
@@ -791,14 +791,16 @@ private static SparseArray<VibrationEffect> createEffectsFromResource(Resources
                 com.android.internal.R.array.config_longPressVibePattern);
         VibrationEffect tickEffect = createEffectFromResource(resources,
                 com.android.internal.R.array.config_clockTickVibePattern);
+        VibrationEffect textureTickEffect = createEffectFromResource(resources,
+                com.android.internal.R.array.config_textureTickVibePattern);
 
         SparseArray<VibrationEffect> effects = new SparseArray<>();
         effects.put(VibrationEffect.EFFECT_CLICK, clickEffect);
         effects.put(VibrationEffect.EFFECT_DOUBLE_CLICK, doubleClickEffect);
         effects.put(VibrationEffect.EFFECT_TICK, tickEffect);
         effects.put(VibrationEffect.EFFECT_HEAVY_CLICK, heavyClickEffect);
-        effects.put(VibrationEffect.EFFECT_TEXTURE_TICK,
-                VibrationEffect.get(VibrationEffect.EFFECT_TICK, false));
+        effects.put(VibrationEffect.EFFECT_TEXTURE_TICK, textureTickEffect != null
+                ? textureTickEffect : VibrationEffect.get(VibrationEffect.EFFECT_TICK, false));
 
         return effects;
     }