Fixing issue with front task dimming when scrolled back.

Change-Id: I30d88796e7af13734c9a33def05b62bed4fb2e96

2 files changed, 13 insertions, 6 deletions

diff --git a/packages/SystemUI/res/values-sw720dp/dimens.xml b/packages/SystemUI/res/values-sw720dp/dimens.xml
index de4a84274ab0..8fe6be93917a 100644
--- a/packages/SystemUI/res/values-sw720dp/dimens.xml
+++ b/packages/SystemUI/res/values-sw720dp/dimens.xml
@@ -32,7 +32,7 @@
     <!-- The radius of the rounded corners on a task view. -->
     <dimen name="recents_task_view_rounded_corners_radius">3dp</dimen>
     <!-- The radius of the rounded corners on a task view's shadow. -->
-    <dimen name="recents_task_view_shadow_rounded_corners_radius">18dp</dimen>
+    <dimen name="recents_task_view_shadow_rounded_corners_radius">12dp</dimen>
 
     <!-- The fraction of the screen height where the clock on the Keyguard has its center. The
      max value is used when no notifications are displaying, and the min value is when the
diff --git a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java
index 6be42c36f6b7..88bebdbf173b 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/views/TaskStackLayoutAlgorithm.java
@@ -693,6 +693,11 @@ public class TaskStackLayoutAlgorithm {
         SystemServicesProxy ssp = Recents.getSystemServices();
 
         // Compute the focused and unfocused offset
+        float boundedStackScroll = Utilities.clamp(stackScroll, mMinScrollP, mMaxScrollP);
+        mUnfocusedRange.offset(boundedStackScroll);
+        mFocusedRange.offset(boundedStackScroll);
+        float boundedScrollUnfocusedRangeX = mUnfocusedRange.getNormalizedX(taskProgress);
+        float boundedScrollFocusedRangeX = mFocusedRange.getNormalizedX(taskProgress);
         mUnfocusedRange.offset(stackScroll);
         mFocusedRange.offset(stackScroll);
         boolean unfocusedVisible = mUnfocusedRange.isInRange(taskProgress);
@@ -729,15 +734,17 @@ public class TaskStackLayoutAlgorithm {
                     unfocusedRangeX)) * mStackRect.height());
             int focusedY = (int) ((1f - mFocusedCurveInterpolator.getInterpolation(
                     focusedRangeX)) * mStackRect.height());
-            float unfocusedDim = 1f - UNFOCUSED_DIM_INTERPOLATOR.getInterpolation(unfocusedRangeX);
-            float focusedDim = 1f - FOCUSED_DIM_INTERPOLATOR.getInterpolation(focusedRangeX);
+            float unfocusedDim = 1f - UNFOCUSED_DIM_INTERPOLATOR.getInterpolation(
+                    boundedScrollUnfocusedRangeX);
+            float focusedDim = 1f - FOCUSED_DIM_INTERPOLATOR.getInterpolation(
+                    boundedScrollFocusedRangeX);
 
             y = (mStackRect.top - mTaskRect.top) +
                     (int) Utilities.mapRange(focusState, unfocusedY, focusedY);
-            z = Utilities.mapRange(Utilities.clamp01(unfocusedRangeX), mMinTranslationZ,
-                    mMaxTranslationZ);
+            z = Utilities.mapRange(Utilities.clamp01(boundedScrollUnfocusedRangeX),
+                    mMinTranslationZ, mMaxTranslationZ);
             dimAlpha = DIM_MAX_VALUE * Utilities.mapRange(focusState, unfocusedDim, focusedDim);
-            viewOutlineAlpha = Utilities.mapRange(Utilities.clamp01(unfocusedRangeX),
+            viewOutlineAlpha = Utilities.mapRange(Utilities.clamp01(boundedScrollUnfocusedRangeX),
                     OUTLINE_ALPHA_MIN_VALUE, OUTLINE_ALPHA_MAX_VALUE);
         }