Add ripple

app/src/main/java/org/thoughtcrime/securesms/conversation/v2/input_bar/InputBar.kt

@@ -4,6 +4,7 @@ import android.content.Context
 import android.util.AttributeSet
 import android.view.LayoutInflater
 import android.widget.LinearLayout
+import kotlinx.android.synthetic.main.view_input_bar.view.*
 import network.loki.messenger.R
 
 class InputBar : LinearLayout {
@@ -23,6 +24,8 @@ class InputBar : LinearLayout {
 
     private fun setUpViewHierarchy() {
         LayoutInflater.from(context).inflate(R.layout.view_input_bar, this)
+        attachmentsButton.setOnClickListener {  }
+        microphoneButton.setOnClickListener {  }
     }
     // endregion
 }

app/src/main/res/drawable/input_bar_button_background.xml

@@ -3,6 +3,12 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:color="@color/accent">
 
+    <item
+        android:id="@android:id/mask">
+        <shape android:shape="oval">
+            <solid android:color="@color/white" />
+        </shape>
+    </item>
     <item>
         <shape android:shape="oval">
             <solid android:color="@color/input_bar_button_background" />

app/src/main/res/layout/view_input_bar.xml

@@ -16,6 +16,7 @@
         android:layout_height="match_parent">
 
         <RelativeLayout
+            android:id="@+id/attachmentsButton"
             android:layout_width="40dp"
             android:layout_height="40dp"
             android:layout_alignParentStart="true"
@@ -42,6 +43,7 @@
             android:background="@color/red" />
 
         <RelativeLayout
+            android:id="@+id/microphoneButton"
             android:layout_width="40dp"
             android:layout_height="40dp"
             android:layout_alignParentEnd="true"