Adjust interpolators when swiping from overview to all apps

- All apps content fades in quickly so that icons are opaque by the time
  they are on screen
- Recents fades out late so that we don't see it as translucent while
  the transition is continuing (the translucent icon top of tranclucent
  task view looks bad, for instance)
- Fix colored scrim that appears over recents - was using 0 to 1 instead
  of 255

Bug: 79867407
Change-Id: I4f50423157f7870c8d0708f586a72e3e5a7b6559

src/com/android/launcher3/allapps/AllAppsTransitionController.java

@@ -5,6 +5,7 @@ import static com.android.launcher3.LauncherState.ALL_APPS_HEADER;
 import static com.android.launcher3.LauncherState.ALL_APPS_HEADER_EXTRA;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.LauncherState.VERTICAL_SWIPE_INDICATOR;
+import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_ALL_APPS_FADE;
 import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_OVERVIEW_SCALE;
 import static com.android.launcher3.anim.AnimatorSetBuilder.ANIM_VERTICAL_PROGRESS;
 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
@@ -151,7 +152,7 @@ public class AllAppsTransitionController implements StateHandler, OnDeviceProfil
     @Override
     public void setState(LauncherState state) {
         setProgress(state.getVerticalProgress(mLauncher));
-        setAlphas(state, NO_ANIM_PROPERTY_SETTER);
+        setAlphas(state, null, new AnimatorSetBuilder());
         onProgressAnimationEnd();
     }
 
@@ -164,7 +165,7 @@ public class AllAppsTransitionController implements StateHandler, OnDeviceProfil
             AnimatorSetBuilder builder, AnimationConfig config) {
         float targetProgress = toState.getVerticalProgress(mLauncher);
         if (Float.compare(mProgress, targetProgress) == 0) {
-            setAlphas(toState, config.getPropertySetter(builder));
+            setAlphas(toState, config, builder);
             // Fail fast
             onProgressAnimationEnd();
             return;
@@ -186,19 +187,24 @@ public class AllAppsTransitionController implements StateHandler, OnDeviceProfil
 
         builder.play(anim);
 
-        setAlphas(toState, config.getPropertySetter(builder));
+        setAlphas(toState, config, builder);
     }
 
-    private void setAlphas(LauncherState toState, PropertySetter setter) {
+    private void setAlphas(LauncherState toState, AnimationConfig config,
+            AnimatorSetBuilder builder) {
+        PropertySetter setter = config == null ? NO_ANIM_PROPERTY_SETTER
+                : config.getPropertySetter(builder);
         int visibleElements = toState.getVisibleElements(mLauncher);
         boolean hasHeader = (visibleElements & ALL_APPS_HEADER) != 0;
         boolean hasHeaderExtra = (visibleElements & ALL_APPS_HEADER_EXTRA) != 0;
         boolean hasContent = (visibleElements & ALL_APPS_CONTENT) != 0;
 
-        setter.setViewAlpha(mAppsView.getSearchView(), hasHeader ? 1 : 0, LINEAR);
-        setter.setViewAlpha(mAppsView.getContentView(), hasContent ? 1 : 0, LINEAR);
-        setter.setViewAlpha(mAppsView.getScrollBar(), hasContent ? 1 : 0, LINEAR);
-        mAppsView.getFloatingHeaderView().setContentVisibility(hasHeaderExtra, hasContent, setter);
+        Interpolator allAppsFade = builder.getInterpolator(ANIM_ALL_APPS_FADE, LINEAR);
+        setter.setViewAlpha(mAppsView.getSearchView(), hasHeader ? 1 : 0, allAppsFade);
+        setter.setViewAlpha(mAppsView.getContentView(), hasContent ? 1 : 0, allAppsFade);
+        setter.setViewAlpha(mAppsView.getScrollBar(), hasContent ? 1 : 0, allAppsFade);
+        mAppsView.getFloatingHeaderView().setContentVisibility(hasHeaderExtra, hasContent, setter,
+                allAppsFade);
 
         setter.setInt(mScrimView, ScrimView.DRAG_HANDLE_ALPHA,
                 (visibleElements & VERTICAL_SWIPE_INDICATOR) != 0 ? 255 : 0, LINEAR);

src/com/android/launcher3/allapps/FloatingHeaderView.java

@@ -15,8 +15,6 @@
  */
 package com.android.launcher3.allapps;
 
-import static com.android.launcher3.anim.Interpolators.LINEAR;
-
 import android.animation.ValueAnimator;
 import android.content.Context;
 import android.graphics.Point;
@@ -28,6 +26,7 @@ import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.animation.Interpolator;
 import android.widget.LinearLayout;
 
 import com.android.launcher3.R;
@@ -227,8 +226,9 @@ public class FloatingHeaderView extends LinearLayout implements
         p.y = getTop() - mCurrentRV.getTop() - mParent.getTop();
     }
 
-    public void setContentVisibility(boolean hasHeader, boolean hasContent, PropertySetter setter) {
-        setter.setViewAlpha(this, hasContent ? 1 : 0, LINEAR);
+    public void setContentVisibility(boolean hasHeader, boolean hasContent, PropertySetter setter,
+            Interpolator fadeInterpolator) {
+        setter.setViewAlpha(this, hasContent ? 1 : 0, fadeInterpolator);
         allowTouchForwarding(hasContent);
     }
 

src/com/android/launcher3/anim/AnimatorSetBuilder.java

@@ -35,6 +35,7 @@ public class AnimatorSetBuilder {
     public static final int ANIM_WORKSPACE_FADE = 2;
     public static final int ANIM_OVERVIEW_SCALE = 3;
     public static final int ANIM_OVERVIEW_FADE = 4;
+    public static final int ANIM_ALL_APPS_FADE = 5;
 
     protected final ArrayList<Animator> mAnims = new ArrayList<>();
 

src/com/android/launcher3/touch/AbstractStateChangeTouchController.java

@@ -341,7 +341,7 @@ public abstract class AbstractStateChangeTouchController
 
     private AnimatorSet createAtomicAnimForState(LauncherState fromState, LauncherState targetState,
             long duration) {
-        AnimatorSetBuilder builder = new AnimatorSetBuilder();
+        AnimatorSetBuilder builder = getAnimatorSetBuilderForStates(fromState, targetState);
         mLauncher.getStateManager().prepareForAtomicAnimation(fromState, targetState, builder);
         AnimationConfig config = new AnimationConfig();
         config.animComponents = ATOMIC_COMPONENT;
@@ -352,6 +352,11 @@ public abstract class AbstractStateChangeTouchController
         return builder.build();
     }
 
+    protected AnimatorSetBuilder getAnimatorSetBuilderForStates(LauncherState fromState,
+            LauncherState toState) {
+        return new AnimatorSetBuilder();
+    }
+
     @Override
     public void onDragEnd(float velocity, boolean fling) {
         final int logAction = fling ? Touch.FLING : Touch.SWIPE;