1 files changed, 51 insertions, 0 deletions
diff --git a/adapter/src/main/kotlin/ca/allanwang/kau/animators/FadeScaleAnimator.kt b/adapter/src/main/kotlin/ca/allanwang/kau/animators/FadeScaleAnimator.kt
new file mode 100644
index 0000000..e968cda
--- /dev/null
+++ b/adapter/src/main/kotlin/ca/allanwang/kau/animators/FadeScaleAnimator.kt
@@ -0,0 +1,51 @@
+package ca.allanwang.kau.animators
+
+import android.support.v7.widget.RecyclerView
+import android.view.ViewPropertyAnimator
+
+/**
+ * Created by Allan Wang on 2017-06-29.
+ */
+open class FadeScaleAnimator(val scaleFactor: Float = 0.7f, itemDelayFactor: Float = 0.125f) : BaseDelayAnimator(itemDelayFactor) {
+
+    override fun addAnimationPrepare(holder: RecyclerView.ViewHolder) {
+        with(holder.itemView) {
+            scaleX = scaleFactor
+            scaleY = scaleFactor
+            alpha = 0f
+        }
+    }
+
+    override final fun addAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator {
+        return super.addAnimation(holder).apply {
+            scaleX(1f)
+            scaleY(1f)
+            alpha(1f)
+        }
+    }
+
+
+    final override fun addAnimationCleanup(holder: RecyclerView.ViewHolder) {
+        with(holder.itemView) {
+            scaleX = 1f
+            scaleY = 1f
+            alpha = 1f
+        }
+    }
+
+    override fun removeAnimation(holder: RecyclerView.ViewHolder): ViewPropertyAnimator {
+        return super.removeAnimation(holder).apply {
+            scaleX(scaleFactor)
+            scaleY(scaleFactor)
+            alpha(0f)
+        }
+    }
+
+    override final fun removeAnimationCleanup(holder: RecyclerView.ViewHolder) {
+        with(holder.itemView) {
+            translationY = 0f
+            translationX = 0f
+            alpha = 1f
+        }
+    }
+}
+\ No newline at end of file