1 files changed, 41 insertions, 0 deletions
diff --git a/src/com/android/camera/ui/motion/DynamicAnimation.java b/src/com/android/camera/ui/motion/DynamicAnimation.java
new file mode 100644
index 000000000..57d5a1021
--- /dev/null
+++ b/src/com/android/camera/ui/motion/DynamicAnimation.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 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.camera.ui.motion;
+
+import android.graphics.Canvas;
+
+/**
+ * Rendering object that can be driven by an animator instance.
+ */
+public interface DynamicAnimation {
+
+    /**
+     * Check to determine if this animation is currently in a stable state.
+     *
+     * @return true if the animation is stable, false if it should continue to be redrawn.
+     */
+    boolean isActive();
+
+    /**
+     * Update and draw the animation onto the given canvas.
+     *
+     * @param t current animation frame time.
+     * @param dt delta since the last update.
+     * @param canvas the canvas to draw the animation onto.
+     */
+    void draw(long t, long dt, Canvas canvas);
+}