android-calculatorpp/res/layout/main.xml

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

<LinearLayout xmlns:a="http://schemas.android.com/apk/res/android"
			  xmlns:calc="http://schemas.android.com/apk/res/org.solovyev.android.calculator"
			  a:orientation="vertical"
			  a:layout_width="match_parent"
			  a:layout_height="match_parent"
			  a:background="#ff000000">

	<LinearLayout
			a:orientation="vertical"
			a:layout_width="match_parent"
			a:layout_height="100dp"
			a:layout_weight="2">

		<EditText
				a:id="@+id/editText"
				style="@style/editTextInputStyle"
				a:maxLines="5"
				a:minLines="5"
				a:gravity="top|left"
				a:textAppearance="?android:attr/textAppearanceMedium"
				a:typeface="monospace"
				a:singleLine="false"/>

		<EditText
				a:id="@+id/resultEditText"
				style="@style/editTextInputStyle"
				a:gravity="top|left"
				a:textAppearance="?android:attr/textAppearanceMedium"
				a:minLines="1"
				a:height="10dp"
				a:typeface="monospace"
				a:editable="false"
				a:focusable="false"/>
	</LinearLayout>


	<org.solovyev.android.view.PanelSwitcher
			a:id="@+id/panelswitch"
			a:layout_width="match_parent"
			a:layout_height="0dp"
			a:layout_weight="5">

		<LinearLayout
				a:id="@+id/simplePad"
				a:layout_width="match_parent"
				a:layout_height="match_parent"
				a:orientation="vertical"
				a:layout_gravity="center">

			<LinearLayout a:layout_weight="1" a:layout_width="match_parent" a:layout_height="0dp">
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/oneDigitButton" a:text="1" calc:textUp="sin"
															   calc:textDown="asin" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/twoDigitButton" a:text="2" calc:textUp="cos"
															   calc:textDown="acos" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/threeDigitButton" a:text="3" calc:textUp="tg"
															   calc:textDown="atg" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/muliplicationButton" a:text="*"
															   calc:textUp="^"
															   calc:textDown="^2" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/plusButton" a:text="+"
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

			</LinearLayout>

			<LinearLayout a:layout_weight="1" a:layout_width="match_parent" a:layout_height="0dp">
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/fourDigitButton" a:text="4" calc:textUp="exp"
															   calc:textDown="mod" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/fiveDigitButton" a:text="5" calc:textUp="log"
															   calc:textDown="ln" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/sixDigitButton" a:text="6" calc:textUp="!"
															   calc:textDown="" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/divisionButton" a:text="/"
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/subtractionButton" a:text="-"
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

			</LinearLayout>

			<LinearLayout a:layout_weight="1" a:layout_width="match_parent" a:layout_height="0dp">

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/sevenDigitButton" a:text="7" calc:textUp=""
															   calc:textDown="" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/eigthDigitButton" a:text="8" calc:textUp=""
															   calc:textDown="" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/nineDigitButton" a:text="9" calc:textUp=""
															   calc:textDown="" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/equalsButton" a:text="="
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/sqrtButton" a:text="sqrt"
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

			</LinearLayout>

			<LinearLayout a:layout_weight="1" a:layout_width="match_parent" a:layout_height="0dp">
				<org.solovyev.android.view.DirectionDragButton a:id="@+id/zeroDigitButton" a:text="0"
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/roundBracketsButton" a:text="()"
															   calc:textUp="("
															   calc:textDown=")" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/squareBracketsButton" a:text="[]"
															   calc:textUp="["
															   calc:textDown="]" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/curlyBracketsButton" a:text="{}"
															   calc:textUp="{"
															   calc:textDown="}" style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/piButton" a:text="pi" calc:textUp="e"
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

			</LinearLayout>


			<LinearLayout a:layout_weight="1" a:layout_width="match_parent" a:layout_height="0dp">

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/pointDigitButton" a:text="." calc:textDown=","
															   style="@style/digitButtonStyle"
															   a:onClick="digitButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/numericButton" a:text="numeric"
															   style="@style/digitButtonStyle"
															   a:onClick="numericButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/simplifyButton" a:text="simplify"
															   style="@style/digitButtonStyle"
															   a:onClick="simplifyButtonClickHandler"/>

				<org.solovyev.android.view.DirectionDragButton a:id="@+id/historyButton" calc:textUp="undo"
															   calc:textDown="redo" style="@style/digitButtonStyle"/>

			</LinearLayout>
		</LinearLayout>
	</org.solovyev.android.view.PanelSwitcher>
</LinearLayout>