First commit.

qml/component/ButtonDelegate.qml

@@ -0,0 +1,36 @@
+import QtQuick 2.10
+import QtQuick.Controls 2.3
+import QtQuick.Layouts 1.3
+import QtQuick.Controls.Material 2.3
+
+Item {
+    property int index
+    property alias contentItem: itemDelegate.contentItem
+    signal clicked
+
+    id: buttonDelegate
+
+    Layout.fillWidth: true
+    Layout.preferredHeight: width
+
+    Rectangle {
+        width: swipeView.currentIndex === index ?  parent.width : 0
+        height: parent.height
+        anchors.bottom:  itemDelegate.bottom
+        color: Qt.lighter(Material.accent)
+
+        Behavior on width {
+            PropertyAnimation { easing.type: Easing.InOutQuad; duration: 200 }
+        }
+    }
+
+    ItemDelegate {
+        id: itemDelegate
+        anchors.fill: parent
+
+        onClicked: {
+            swipeView.currentIndex = index
+            buttonDelegate.clicked()
+        }
+    }
+}