1 files changed, 65 insertions, 0 deletions
diff --git a/core/java/android/transition/Slide.java b/core/java/android/transition/Slide.java
new file mode 100644
index 000000000000..b38973ce122d
--- /dev/null
+++ b/core/java/android/transition/Slide.java
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2013 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 android.transition;
+
+import android.animation.Animator;
+import android.animation.ObjectAnimator;
+import android.animation.TimeInterpolator;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.animation.AccelerateInterpolator;
+import android.view.animation.DecelerateInterpolator;
+
+/**
+ * This transition captures the visibility of target objects before and
+ * after a scene change and animates any changes by sliding the target
+ * objects into or out of place.
+ *
+ * @hide
+ */
+public class Slide extends Visibility {
+
+    // TODO: Add parameter for sliding factor - it's hard-coded below
+
+    private static final TimeInterpolator sAccelerator = new AccelerateInterpolator();
+    private static final TimeInterpolator sDecelerator = new DecelerateInterpolator();
+
+    @Override
+    public Animator onAppear(ViewGroup sceneRoot,
+            TransitionValues startValues, int startVisibility,
+            TransitionValues endValues, int endVisibility) {
+        View endView = (endValues != null) ? endValues.view : null;
+        endView.setTranslationY(-2 * endView.getHeight());
+        ObjectAnimator anim = ObjectAnimator.ofFloat(endView, View.TRANSLATION_Y,
+                -2 * endView.getHeight(), 0);
+        anim.setInterpolator(sDecelerator);
+        return anim;
+    }
+
+    @Override
+    public Animator onDisappear(ViewGroup sceneRoot,
+            TransitionValues startValues, int startVisibility,
+            TransitionValues endValues, int endVisibility) {
+        View startView = (startValues != null) ? startValues.view : null;
+        startView.setTranslationY(0);
+        ObjectAnimator anim = ObjectAnimator.ofFloat(startView, View.TRANSLATION_Y, 0,
+                -2 * startView.getHeight());
+        anim.setInterpolator(sAccelerator);
+        return anim;
+    }
+
+}