Overview - position the modal task in the correct place.

video of new behavoir
https://drive.google.com/a/google.com/file/d/1vFTtjjpwamj5H7dhmB1-5JSFS6fv6vMw/view?usp=sharing


Test: local
Bug: 155205932
Change-Id: I7fe79c848af92013587de32a777645cc472ae910

quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java

@@ -214,6 +214,7 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
     protected final Rect mTempRect = new Rect();
     protected final RectF mTempRectF = new RectF();
     private final PointF mTempPointF = new PointF();
+    private final float[] mTempFloatPoint = new float[2];
 
     private static final int DISMISS_TASK_DURATION = 300;
     private static final int ADDITION_TASK_DURATION = 200;
@@ -1651,6 +1652,7 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
                 mTempRect, mActivity.getDeviceProfile(), mTempPointF);
         setPivotX(mTempPointF.x);
         setPivotY(mTempPointF.y);
+        setTaskModalness(mTaskModalness);
         updatePageOffsets();
     }
 
@@ -2131,6 +2133,18 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
         updatePageOffsets();
         if (getCurrentPageTaskView() != null) {
             getCurrentPageTaskView().setModalness(modalness);
+            TaskView tv = getCurrentPageTaskView();
+
+            // Move the task view up as it scales...
+            // ...the icon on taskview is hidden in modal state, so consider the top of the task
+            mTempFloatPoint[0] = 0;
+            mTempFloatPoint[1] = tv.getTop() + mTaskTopMargin;
+            // ...find the top after the transformation
+            getMatrix().mapPoints(mTempFloatPoint);
+
+            // ...make it match the top inset
+            float calcOffset = (mInsets.top - mTempFloatPoint[1]) * mTaskModalness;
+            tv.setTranslationY(calcOffset);
         }
     }
 

quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java

@@ -107,7 +107,7 @@ public abstract class BaseRecentsViewStateController<T extends RecentsView>
         setter.setFloat(
                 mRecentsView, getTaskModalnessProperty(),
                 toState.getOverviewModalness(),
-                config.getInterpolator(ANIM_OVERVIEW_MODAL, AGGRESSIVE_EASE_IN_OUT));
+                config.getInterpolator(ANIM_OVERVIEW_MODAL, LINEAR));
     }
 
     abstract FloatProperty getTaskModalnessProperty();