android-calculatorpp/android-app/res/layout/cpp_wizard_step_drag_button.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
	xmlns:c="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
	a:layout_width="match_parent"
	a:layout_height="match_parent"
	a:orientation="vertical">

	<TextView
			a:text="Drag button is an exclusive feature of Calculator++ which provides fast access to the secondary functions"
			a:layout_height="wrap_content"
			a:layout_width="match_parent" />

	<TextView
			a:id="@+id/wizard_dragbutton_action_textview"
		    a:layout_marginTop="10dp"
		    a:textStyle="bold"
			a:text="@string/cpp_wizard_dragbutton_action_center"
			a:layout_height="wrap_content"
			a:layout_width="match_parent" />

	<org.solovyev.android.view.drag.DirectionDragButton
		a:layout_margin="30dp"
		a:layout_height="100dp"
		a:layout_width="100dp"
		a:minWidth="100dp"
		a:minHeight="100dp"
		a:layout_gravity="center"
		a:id="@+id/wizard_dragbutton"
		a:text="9"
		c:textDown="^2"
		c:textLeft="sin"
		c:textUp="%"
		c:directionTextScale="0.5;0.5;0.5;0.33"
		style="?cpp_operation_button_style"/>

</LinearLayout>