1 files changed, 53 insertions, 0 deletions
diff --git a/src/com/android/launcher3/anim/CircleRevealOutlineProvider.java b/src/com/android/launcher3/anim/CircleRevealOutlineProvider.java
new file mode 100644
index 000000000..9fb6b498b
--- /dev/null
+++ b/src/com/android/launcher3/anim/CircleRevealOutlineProvider.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.anim;
+
+public class CircleRevealOutlineProvider extends RevealOutlineAnimation {
+
+    private int mCenterX;
+    private int mCenterY;
+    private float mRadius0;
+    private float mRadius1;
+
+    /**
+     * @param x reveal center x
+     * @param y reveal center y
+     * @param r0 initial radius
+     * @param r1 final radius
+     */
+    public CircleRevealOutlineProvider(int x, int y, float r0, float r1) {
+        mCenterX = x;
+        mCenterY = y;
+        mRadius0 = r0;
+        mRadius1 = r1;
+    }
+
+    @Override
+    public boolean shouldRemoveElevationDuringAnimation() {
+        return true;
+    }
+
+    @Override
+    public void setProgress(float progress) {
+        mOutlineRadius = (1 - progress) * mRadius0 + progress * mRadius1;
+
+        mOutline.left = (int) (mCenterX - mOutlineRadius);
+        mOutline.top = (int) (mCenterY - mOutlineRadius);
+        mOutline.right = (int) (mCenterX + mOutlineRadius);
+        mOutline.bottom = (int) (mCenterY + mOutlineRadius);
+    }
+}