commit 3f6c4731646184d1ccebe641e66e07a2831e0a4e
author Schneider Victor-tulias <victortulias@google.com> Thu Jun 23 11:25:10 2022 -0700
committer Schneider Victor-tulias <victortulias@google.com> Tue Jul 19 11:35:37 2022 -0700
tree 1a2cc94321559cc2843766b03577378123ffe3aa
parent 68c6b81d2a5cd71ca83297cf2151bc953df663a1

Fade out the taskbar icons when animating to overview in 3 button nav.

Bug: 231213105
Test: from home, opened recents, then went back home, then went back to recents, resumed an app, then went back to recents and resumed the same app (both in 3-button and gesture nav)

Change-Id: I83b1b33cafb95353f36a126b93fcaf3b536d3bf4

src/com/android/launcher3/LauncherState.java

diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index ea6a919..8b5cdbd 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -208,14 +208,18 @@
         return (getVisibleElements(launcher) & elements) == elements;
     }
 
-    /** Returns whether taskbar is stashed and thus should replace hotseat with a handle */
+    /**
+     * Returns whether taskbar is stashed and thus should either:
+     * 1) replace hotseat or taskbar icons with a handle in gesture navigation mode or
+     * 2) fade out the hotseat or taskbar icons in 3-button navigation mode.
+     */
     public boolean isTaskbarStashed(Launcher launcher) {
         return false;
     }
 
     /** Returns whether taskbar is aligned with the hotseat vs position inside apps */
     public boolean isTaskbarAlignedWithHotseat(Launcher launcher) {
-        return !isTaskbarStashed(launcher);
+        return true;
     }
 
     /**

src/com/android/launcher3/util/MultiValueAlpha.java

diff --git a/src/com/android/launcher3/util/MultiValueAlpha.java b/src/com/android/launcher3/util/MultiValueAlpha.java
index 11cd07c..4b46a0a 100644
--- a/src/com/android/launcher3/util/MultiValueAlpha.java
+++ b/src/com/android/launcher3/util/MultiValueAlpha.java
@@ -23,6 +23,7 @@
 
 import com.android.launcher3.anim.AlphaUpdateListener;
 
+import java.io.PrintWriter;
 import java.util.Arrays;
 import java.util.function.Consumer;
 
@@ -78,6 +79,29 @@
         mUpdateVisibility = updateVisibility;
     }
 
+    /**
+     * Dumps the alpha channel values to the given PrintWriter
+     *
+     * @param prefix String to be used before every line
+     * @param pw PrintWriter where the logs should be dumped
+     * @param label String used to help identify this object
+     * @param alphaIndexLabels Strings that represent each alpha channel, these should be entered
+     *                         in the order of the indexes they represent, starting from 0.
+     */
+    public void dump(String prefix, PrintWriter pw, String label, String... alphaIndexLabels) {
+        pw.println(prefix + label);
+
+        String innerPrefix = prefix + '\t';
+        for (int i = 0; i < alphaIndexLabels.length; i++) {
+            if (i >= mMyProperties.length) {
+                pw.println(innerPrefix + alphaIndexLabels[i] + " given for alpha index " + i
+                        + " however there are only " + mMyProperties.length + " alpha channels.");
+                continue;
+            }
+            pw.println(innerPrefix + alphaIndexLabels[i] + "=" + getProperty(i).getValue());
+        }
+    }
+
     public class AlphaProperty {
 
         private final int mMyMask;