Change TaskIconMenu to lay out vertically

Still lays out horizontally when in phone
landscape.
TODO(b/186583656), need to center view.
Also have all layout be dynamic instead of having
some cases be in XML and some in code.

Bug: 181704764
Test: Task menu visible with all options in
portrait/landscape tablet
portrait phone
fake/real landscape phone

Change-Id: I3632eeb174f3e4baf2c9d69d51c1815c3c512e59

src/com/android/launcher3/Utilities.java

@@ -65,6 +65,7 @@ import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.animation.Interpolator;
+import android.widget.LinearLayout;
 
 import androidx.core.graphics.ColorUtils;
 import androidx.core.os.BuildCompat;
@@ -752,6 +753,16 @@ public final class Utilities {
                 ColorUtils.blendARGB(0, color, tintAmount));
     }
 
+    /**
+     * Sets start margin on the provided {@param view} to be {@param margin}.
+     * Assumes {@param view} is a child of {@link LinearLayout}
+     */
+    public static void setStartMarginForView(View view, int margin) {
+        LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) view.getLayoutParams();
+        lp.setMarginStart(margin);
+        view.setLayoutParams(lp);
+    }
+
     private static class FixedSizeEmptyDrawable extends ColorDrawable {
 
         private final int mSize;