Anti-alias thumbnail corners to look smoother

Thumbnail corners should be anti-aliased so that they look smoother and
less rough.

Bug: 131779031
Test: Manual, go to recents and see corners
Change-Id: I49a299671ec37f56b6eebe2dd2eb71790e8cb2b4

parent d16f87f5

go/quickstep/src/com/android/quickstep/ThumbnailDrawable.java

+1 −0

Original line number	Diff line number	Diff line
		@@ -57,6 +57,7 @@ public final class ThumbnailDrawable extends Drawable {
		mCornerRadius = (int) res.getDimension(R.dimen.task_thumbnail_corner_radius);
		mShader = new BitmapShader(mThumbnailData.thumbnail, CLAMP, CLAMP);
		mPaint.setShader(mShader);
		mPaint.setAntiAlias(true);
		updateMatrix();
		}