Make magnifier show up opposite touch

Touch on left -> magnifier on right, touch on right -> magnifier on
left.

No dynamic switching for now, just affecting initial placement.

Bug: 179499370
Test: Bring up crop UI, drag handles on the left and right, observe
      magnifier doesn't show up beneath thumb.
Change-Id: Ib020b99fec41637bce4e1797412afbdbd9447ab2

1 files changed, 3 insertions, 1 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/screenshot/MagnifierView.java b/packages/SystemUI/src/com/android/systemui/screenshot/MagnifierView.java
index f88715164bc7..f8f1d3ac9a5b 100644
--- a/packages/SystemUI/src/com/android/systemui/screenshot/MagnifierView.java
+++ b/packages/SystemUI/src/com/android/systemui/screenshot/MagnifierView.java
@@ -144,7 +144,9 @@ public class MagnifierView extends View implements CropView.CropInteractionListe
                 setAlpha(0f);
                 setTranslationX((getParentWidth() - getWidth()) / 2);
                 setVisibility(View.VISIBLE);
-                animate().alpha(1f).translationX(0).scaleX(1f).scaleY(1f).start();
+                boolean touchOnRight = event.getX() > getParentWidth() / 2;
+                float translateXTarget = touchOnRight ? 0 : getParentWidth() - getWidth();
+                animate().alpha(1f).translationX(translateXTarget).scaleX(1f).scaleY(1f).start();
                 break;
             case MotionEvent.ACTION_MOVE:
                 mLastCropPosition = cropPosition;