Copy/paste actions

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

@@ -29,4 +29,5 @@
     xmlns:tools="http://schemas.android.com/tools"
     a:src="@drawable/ic_keyboard_arrow_left_white_48dp"
     c:directionTextUp="<<"
+    c:directionTextDown="@string/cpp_glyph_copy"
     tools:ignore="HardcodedText" />

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

@@ -29,4 +29,5 @@
     xmlns:tools="http://schemas.android.com/tools"
     a:src="@drawable/ic_keyboard_arrow_right_white_48dp"
     c:directionTextUp=">>"
+    c:directionTextDown="@string/cpp_glyph_paste"
     tools:ignore="HardcodedText" />

app/src/main/res/values/text_non_translatable.xml

@@ -17,6 +17,8 @@
     <string name="cpp_show_greek_keyboard" translatable="false">αβγ</string>
     <string name="cpp_exponent" translatable="false">E</string>
     <string name="cpp_theme_black" translatable="false">%1$s (AMOLED)</string>
+    <string name="cpp_glyph_paste">"\ue000"</string>
+    <string name="cpp_glyph_copy">"\ue001"</string>
     <string-array name="cpp_prefs_precisions" translatable="false">
         <item>0</item>
         <item>1</item>