Correct GesturePreviewTrail.getWidth() implementation

Bug: 7981153
Change-Id: I20785b7f82329ce6f19c883e77a9716772cda290

2 files changed, 2 insertions, 4 deletions

diff --git a/java/res/values/dimens.xml b/java/res/values/dimens.xml
index c7d993698..eb0934c63 100644
--- a/java/res/values/dimens.xml
+++ b/java/res/values/dimens.xml
@@ -100,7 +100,7 @@
     <fraction name="center_suggestion_percentile">36%</fraction>
 
     <!-- Gesture preview trail parameters -->
-    <dimen name="gesture_preview_trail_start_width">12.6dp</dimen>
+    <dimen name="gesture_preview_trail_start_width">10.0dp</dimen>
     <dimen name="gesture_preview_trail_end_width">2.5dp</dimen>
     <!-- Gesture floating preview text parameters -->
     <dimen name="gesture_floating_preview_text_size">24dp</dimen>
diff --git a/java/src/com/android/inputmethod/keyboard/internal/GesturePreviewTrail.java b/java/src/com/android/inputmethod/keyboard/internal/GesturePreviewTrail.java
index 4a8407cb5..9f6945da5 100644
--- a/java/src/com/android/inputmethod/keyboard/internal/GesturePreviewTrail.java
+++ b/java/src/com/android/inputmethod/keyboard/internal/GesturePreviewTrail.java
@@ -131,10 +131,8 @@ final class GesturePreviewTrail {
      * @return the width of a gesture trail
      */
     private static float getWidth(final int elapsedTime, final Params params) {
-        final int deltaTime = params.mTrailLingerDuration - elapsedTime;
         final float deltaWidth = params.mTrailStartWidth - params.mTrailEndWidth;
-        return Math.max(
-                (deltaTime * deltaWidth) / params.mTrailLingerDuration, params.mTrailEndWidth);
+        return params.mTrailStartWidth - (deltaWidth * elapsedTime) / params.mTrailLingerDuration;
     }
 
     private final RoundedLine mRoundedLine = new RoundedLine();