Animate background shadow

.gitignore

@@ -3,6 +3,7 @@
 /local.properties
 /.idea/workspace.xml
 /.idea/libraries
+/.idea
 .DS_Store
 /build
 /captures

build.gradle

@@ -3,17 +3,18 @@
 buildscript {
 
     ext.compileSdkVersion = 27
-    ext.buildToolsVersion = '27.0.3'
+    ext.buildToolsVersion = '28.0.3'
     ext.minSdkVersion = 16
     ext.targetSdkVersion = 27
     ext.supportVersion = '27.1.1'
 
     repositories {
         jcenter()
         google()
+        maven { url "https://maven.google.com" }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.3'
+        classpath 'com.android.tools.build:gradle:3.3.2'
         classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.0'
         classpath 'com.github.dcendents:android-maven-gradle-plugin:2.0'
 

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Fri Aug 03 23:04:03 CEST 2018
+#Thu Apr 11 12:47:04 IRDT 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip

zoomy/src/main/java/com/ablanco/zoomy/ZoomableTouchListener.java

@@ -1,5 +1,8 @@
 package com.ablanco.zoomy;
 
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
 import android.graphics.Color;
 import android.graphics.Point;
 import android.graphics.PointF;
@@ -170,17 +173,38 @@ public boolean onTouch(View v, MotionEvent ev) {
         return true;
     }
 
-
     private void endZoomingView() {
         if (mConfig.isZoomAnimationEnabled()) {
             mAnimatingZoomEnding = true;
-            mZoomableView.animate()
-                    .x(mTargetViewCords.x)
-                    .y(mTargetViewCords.y)
-                    .scaleX(1)
-                    .scaleY(1)
-                    .setInterpolator(mEndZoomingInterpolator)
-                    .withEndAction(mEndingZoomAction).start();
+            ValueAnimator animator = ValueAnimator.ofFloat(0f, 1f);
+            animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
+                float xStart = mZoomableView.getX();
+                float yStart = mZoomableView.getY();
+                float scaleStart = mZoomableView.getScaleX();
+
+                @Override
+                public void onAnimationUpdate(ValueAnimator animation) {
+                    mZoomableView.setX(xStart + animation.getAnimatedFraction() * (mTargetViewCords.x - xStart));
+                    mZoomableView.setY(yStart + animation.getAnimatedFraction() * (mTargetViewCords.y - yStart));
+                    mScaleFactor = scaleStart + animation.getAnimatedFraction() * (1f - scaleStart);
+                    mZoomableView.setScaleX(mScaleFactor);
+                    mZoomableView.setScaleY(mScaleFactor);
+                    obscureDecorView(mScaleFactor >= 1 ? mScaleFactor: 1);
+                }
+            });
+            animator.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationCancel(Animator animation) {
+                    mEndingZoomAction.run();
+                }
+
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    mEndingZoomAction.run();
+                }
+            });
+            animator.setInterpolator(mEndZoomingInterpolator);
+            animator.start();
         } else mEndingZoomAction.run();
     }