From 651e354401e66ed8b6efcfaf04382f0df7f5ab64 Mon Sep 17 00:00:00 2001
From: btmccord <info@splitterdesigns.com>
Date: Sun, 7 Jan 2018 14:37:47 -0700
Subject: [PATCH 1/3] Elevation Suport

Fixes elevation for ScalingLayout Views
---
 app/build.gradle                              |  2 +-
 scalinglib/build.gradle                       |  2 +-
 .../com/view/scalinglib/ScalingLayout.java    | 31 +++++++++++++++++++
 3 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/app/build.gradle b/app/build.gradle
index 2621f81..be6945a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -5,7 +5,7 @@ android {
     buildToolsVersion "26.0.2"
     defaultConfig {
         applicationId "iammert.com.view.scalinglayout"
-        minSdkVersion 15
+        minSdkVersion 21
         targetSdkVersion 26
         versionCode 1
         versionName "1.0"
diff --git a/scalinglib/build.gradle b/scalinglib/build.gradle
index 04f1107..3e6a42f 100644
--- a/scalinglib/build.gradle
+++ b/scalinglib/build.gradle
@@ -7,7 +7,7 @@ android {
 
 
     defaultConfig {
-        minSdkVersion 15
+        minSdkVersion 21
         targetSdkVersion 26
         versionCode 1
         versionName "1.0"
diff --git a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
index b36b24f..d3f20be 100644
--- a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
+++ b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
@@ -4,6 +4,7 @@
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Canvas;
+import android.graphics.Outline;
 import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.PorterDuff;
@@ -12,7 +13,9 @@
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.util.AttributeSet;
+import android.view.View;
 import android.view.ViewGroup;
+import android.view.ViewOutlineProvider;
 import android.widget.FrameLayout;
 
 /**
@@ -68,6 +71,32 @@ public class ScalingLayout extends FrameLayout {
      */
     private ScalingLayoutListener scalingLayoutListener;
 
+    /**
+     * Custom ViewOutlineProvider class
+     */
+
+    private class CustomOutline extends ViewOutlineProvider {
+
+        int width;
+        int height;
+
+        CustomOutline(int width, int height) {
+            this.width = width;
+            this.height = height;
+        }
+
+        @Override
+        public void getOutline(View view, Outline outline) {
+            outline.setRoundRect(0,0,width,height, currentRadius);
+        }
+    }
+
+    /**
+     * CustomOutline for elevation shadows
+     */
+    private CustomOutline viewOutline;
+
+
     public ScalingLayout(@NonNull Context context) {
         super(context);
         init(context, null);
@@ -140,6 +169,8 @@ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
         }
 
         rectF.set(0, 0, w, h);
+        viewOutline = new CustomOutline(w,h);
+        this.setOutlineProvider(viewOutline);
         invalidate();
     }
 

From 3527f3a779b7c8b9441a6a8a9c5cbade989c716d Mon Sep 17 00:00:00 2001
From: mertsimsek <mertsimsek1992@gmail.com>
Date: Mon, 8 Jan 2018 10:36:21 +0300
Subject: [PATCH 2/3] Refactor view outline provider.

---
 app/src/main/res/layout/activity_fab.xml      |  1 +
 .../com/view/scalinglib/ScalingLayout.java    | 40 +++++++--------
 .../ScalingLayoutOutlineProvider.java         | 50 +++++++++++++++++++
 3 files changed, 68 insertions(+), 23 deletions(-)
 create mode 100644 scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayoutOutlineProvider.java

diff --git a/app/src/main/res/layout/activity_fab.xml b/app/src/main/res/layout/activity_fab.xml
index 9254666..39ae2e6 100644
--- a/app/src/main/res/layout/activity_fab.xml
+++ b/app/src/main/res/layout/activity_fab.xml
@@ -14,6 +14,7 @@
         android:layout_margin="16dp"
         android:layout_alignParentBottom="true"
         android:layout_alignParentRight="true"
+        android:elevation="4dp"
         app:radiusFactor="1">
 
         <RelativeLayout
diff --git a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
index d3f20be..68330b9 100644
--- a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
+++ b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
@@ -71,30 +71,10 @@ public class ScalingLayout extends FrameLayout {
      */
     private ScalingLayoutListener scalingLayoutListener;
 
-    /**
-     * Custom ViewOutlineProvider class
-     */
-
-    private class CustomOutline extends ViewOutlineProvider {
-
-        int width;
-        int height;
-
-        CustomOutline(int width, int height) {
-            this.width = width;
-            this.height = height;
-        }
-
-        @Override
-        public void getOutline(View view, Outline outline) {
-            outline.setRoundRect(0,0,width,height, currentRadius);
-        }
-    }
-
     /**
      * CustomOutline for elevation shadows
      */
-    private CustomOutline viewOutline;
+    private ScalingLayoutOutlineProvider viewOutline;
 
 
     public ScalingLayout(@NonNull Context context) {
@@ -166,10 +146,11 @@ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
             settings.initialize(w, h);
             currentWidth = w;
             currentRadius = settings.getMaxRadius();
+            viewOutline = new ScalingLayoutOutlineProvider(w, h, currentRadius);
         }
 
         rectF.set(0, 0, w, h);
-        viewOutline = new CustomOutline(w,h);
+        updateViewOutline(h, currentWidth, currentRadius);
         this.setOutlineProvider(viewOutline);
         invalidate();
     }
@@ -237,6 +218,19 @@ public void setListener(ScalingLayoutListener scalingLayoutListener) {
         this.scalingLayoutListener = scalingLayoutListener;
     }
 
+    /**
+     * Updates view outline borders and radius
+     *
+     * @param height
+     * @param width
+     * @param radius
+     */
+    private void updateViewOutline(int height, int width, float radius) {
+        viewOutline.setHeight(height);
+        viewOutline.setWidth(width);
+        viewOutline.setRadius(radius);
+    }
+
     /**
      * Set radius will update layout radius
      * Also layouts margins and width depend on
@@ -321,7 +315,7 @@ private void updateState(float currentRadius) {
     /**
      * Notify observers about change
      */
-    private void notifyListener(){
+    private void notifyListener() {
         if (scalingLayoutListener != null) {
             if (state == State.COLLAPSED) {
                 scalingLayoutListener.onCollapsed();
diff --git a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayoutOutlineProvider.java b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayoutOutlineProvider.java
new file mode 100644
index 0000000..e241ed8
--- /dev/null
+++ b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayoutOutlineProvider.java
@@ -0,0 +1,50 @@
+package iammert.com.view.scalinglib;
+
+import android.graphics.Outline;
+import android.view.View;
+import android.view.ViewOutlineProvider;
+
+/**
+ * Created by mertsimsek on 08/01/2018.
+ */
+public class ScalingLayoutOutlineProvider extends ViewOutlineProvider {
+
+    private int width;
+    private int height;
+    private float radius;
+
+    ScalingLayoutOutlineProvider(int width, int height, float radius) {
+        this.width = width;
+        this.height = height;
+        this.radius = radius;
+    }
+
+    @Override
+    public void getOutline(View view, Outline outline) {
+        outline.setRoundRect(0, 0, width, height, radius);
+    }
+
+    public int getWidth() {
+        return width;
+    }
+
+    public void setWidth(int width) {
+        this.width = width;
+    }
+
+    public int getHeight() {
+        return height;
+    }
+
+    public void setHeight(int height) {
+        this.height = height;
+    }
+
+    public float getRadius() {
+        return radius;
+    }
+
+    public void setRadius(float radius) {
+        this.radius = radius;
+    }
+}

From e1af9dbaf9e13142b4129a6fb75227561a95da31 Mon Sep 17 00:00:00 2001
From: mertsimsek <mertsimsek1992@gmail.com>
Date: Mon, 8 Jan 2018 10:50:23 +0300
Subject: [PATCH 3/3] Change minSDK 15 Check Lollipop and apply elevation.

---
 app/build.gradle                                    |  2 +-
 app/src/main/res/layout/activity_fab.xml            |  2 +-
 scalinglib/build.gradle                             |  2 +-
 .../iammert/com/view/scalinglib/ScalingLayout.java  | 13 +++++++++----
 4 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/app/build.gradle b/app/build.gradle
index be6945a..2621f81 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -5,7 +5,7 @@ android {
     buildToolsVersion "26.0.2"
     defaultConfig {
         applicationId "iammert.com.view.scalinglayout"
-        minSdkVersion 21
+        minSdkVersion 15
         targetSdkVersion 26
         versionCode 1
         versionName "1.0"
diff --git a/app/src/main/res/layout/activity_fab.xml b/app/src/main/res/layout/activity_fab.xml
index 39ae2e6..1061f36 100644
--- a/app/src/main/res/layout/activity_fab.xml
+++ b/app/src/main/res/layout/activity_fab.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@color/colorPrimary"
+    android:background="#ffffff"
     android:orientation="vertical"
     android:id="@+id/rootLayout">
 
diff --git a/scalinglib/build.gradle b/scalinglib/build.gradle
index 3e6a42f..04f1107 100644
--- a/scalinglib/build.gradle
+++ b/scalinglib/build.gradle
@@ -7,7 +7,7 @@ android {
 
 
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion 15
         targetSdkVersion 26
         versionCode 1
         versionName "1.0"
diff --git a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
index 68330b9..0e66039 100644
--- a/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
+++ b/scalinglib/src/main/java/iammert/com/view/scalinglib/ScalingLayout.java
@@ -4,18 +4,17 @@
 import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Canvas;
-import android.graphics.Outline;
 import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffXfermode;
 import android.graphics.RectF;
+import android.os.Build;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
-import android.view.View;
 import android.view.ViewGroup;
-import android.view.ViewOutlineProvider;
 import android.widget.FrameLayout;
 
 /**
@@ -151,7 +150,6 @@ protected void onSizeChanged(int w, int h, int oldw, int oldh) {
 
         rectF.set(0, 0, w, h);
         updateViewOutline(h, currentWidth, currentRadius);
-        this.setOutlineProvider(viewOutline);
         invalidate();
     }
 
@@ -229,6 +227,13 @@ private void updateViewOutline(int height, int width, float radius) {
         viewOutline.setHeight(height);
         viewOutline.setWidth(width);
         viewOutline.setRadius(radius);
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && ViewCompat.getElevation(this) > 0f) {
+            try {
+                setOutlineProvider(viewOutline);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
     }
 
     /**