commit f2393f1d206a88d092a2637511216edb5dad4da4
author Sunny Goyal <sunnygoyal@google.com> Wed Apr 01 20:13:12 2020 -0700
committer Sunny Goyal <sunnygoyal@google.com> Tue Apr 21 11:16:21 2020 -0700
tree 88bb50261f66bf0323f52ce751c03a5e6c0ecc8c
parent 0755ac908c44ed2ddf7d9ac60a39c7b7f2a049cd

Adding TaskViewSimulator for simulating taskView layout on a remote target

1. Tanslating contents of RecentsView instead of recentsView itself. When
   translating, we keep the current TaskView from moving. This allows
   the remoteTarget to follow an individual taskView.
2. Removing translationY in recentsView and setting the pivot instead
3. Using TaskViewSimulator for swipe handler. This allows using similar
   animation creation as Launcher window animation.

Change-Id: I0b7b16c367d9d8cd8dd0ed59061e46853e2f8c83

src/com/android/launcher3/LauncherState.java

diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index 504666a..e799df7 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -90,6 +90,9 @@
     protected static final int FLAG_HIDE_BACK_BUTTON = 1 << 8;
     protected static final int FLAG_HAS_SYS_UI_SCRIM = 1 << 9;
 
+    public static final float NO_OFFSET = 0;
+    public static final float NO_SCALE = 1;
+
     protected static final PageAlphaProvider DEFAULT_ALPHA_PROVIDER =
             new PageAlphaProvider(ACCEL_2) {
                 @Override
@@ -220,7 +223,7 @@
     public abstract int getTransitionDuration(Launcher launcher);
 
     public ScaleAndTranslation getWorkspaceScaleAndTranslation(Launcher launcher) {
-        return new ScaleAndTranslation(1, 0, 0);
+        return new ScaleAndTranslation(NO_SCALE, NO_OFFSET, NO_OFFSET);
     }
 
     public ScaleAndTranslation getHotseatScaleAndTranslation(Launcher launcher) {
@@ -228,12 +231,18 @@
         return getWorkspaceScaleAndTranslation(launcher);
     }
 
-    public ScaleAndTranslation getOverviewScaleAndTranslation(Launcher launcher) {
-        return launcher.getOverviewScaleAndTranslationForNormalState();
+    /**
+     * Returns an array of two elements.
+     *   The first specifies the scale for the overview
+     *   The second is the factor ([0, 1], 0 => center-screen; 1 => offscreen) by which overview
+     *   should be shifted horizontally.
+     */
+    public float[] getOverviewScaleAndOffset(Launcher launcher) {
+        return launcher.getNormalOverviewScaleAndOffset();
     }
 
     public ScaleAndTranslation getQsbScaleAndTranslation(Launcher launcher) {
-        return new ScaleAndTranslation(1, 0, 0);
+        return new ScaleAndTranslation(NO_SCALE, NO_OFFSET, NO_OFFSET);
     }
 
     public float getOverviewFullscreenProgress() {