implementing text font strikethrough

docs/user/text.rst

@@ -168,6 +168,7 @@ the theme color Accent 1.
     font.bold = True
     font.italic = None  # cause value to be inherited from theme
     font.color.theme_color = MSO_THEME_COLOR.ACCENT_1
+    font.strikethrough = True
 
 If you prefer, you can set the font color to an absolute RGB value. Note that
 this will not change color when the theme is changed::

pptx/oxml/simpletypes.py

@@ -727,6 +727,18 @@ class ST_TextWrappingType(XsdTokenEnumeration):
     _members = (NONE, SQUARE)
 
 
+class ST_TextFontStrike(XsdStringEnumeration):
+    """
+    Valid values for <a:bodyPr strike=""> attribute
+    """
+
+    NO_STRIKE = "noStrike"
+    SINGLE_STRIKE = "sngStrike"
+    DOUBLE_STRIKE = "dblStrike"
+
+    _members = (NO_STRIKE, SINGLE_STRIKE, DOUBLE_STRIKE)
+
+
 class ST_UniversalMeasure(BaseSimpleType):
     @classmethod
     def convert_from_xml(cls, str_value):

pptx/oxml/text.py

@@ -27,6 +27,7 @@
     ST_TextSpacingPoint,
     ST_TextTypeface,
     ST_TextWrappingType,
+    ST_TextFontStrike,
     XsdBoolean,
 )
 from pptx.oxml.xmlchemy import (
@@ -306,7 +307,8 @@ class CT_TextCharacterProperties(BaseOxmlElement):
     b = OptionalAttribute("b", XsdBoolean)
     i = OptionalAttribute("i", XsdBoolean)
     u = OptionalAttribute("u", MSO_TEXT_UNDERLINE_TYPE)
-
+    strike = OptionalAttribute("strike", ST_TextFontStrike)
+
     def _new_gradFill(self):
         return CT_GradientFillProperties.new_gradFill()
 

pptx/text/text.py

@@ -10,7 +10,7 @@
 from pptx.enum.lang import MSO_LANGUAGE_ID
 from pptx.enum.text import MSO_AUTO_SIZE, MSO_UNDERLINE
 from pptx.opc.constants import RELATIONSHIP_TYPE as RT
-from pptx.oxml.simpletypes import ST_TextWrappingType
+from pptx.oxml.simpletypes import ST_TextWrappingType, ST_TextFontStrike
 from pptx.shapes import Subshape
 from pptx.text.fonts import FontFiles
 from pptx.text.layout import TextFitter
@@ -309,6 +309,27 @@ def bold(self):
     def bold(self, value):
         self._rPr.b = value
 
+    @property
+    def strikethrough(self):
+        return {
+            ST_TextFontStrike.SINGLE_STRIKE: True,
+            ST_TextFontStrike.DOUBLE_STRIKE: True,
+            ST_TextFontStrike.NO_STRIKE: False,
+            None: None,
+        }[self._rPr.strike]
+
+    @strikethrough.setter
+    def strikethrough(self, value):
+        if value not in (True, False, None):
+            raise ValueError(
+                "assigned value must be True, False, or None, got %s" % value
+            )
+        self._rPr.strike = {
+            True: ST_TextFontStrike.SINGLE_STRIKE,
+            False: ST_TextFontStrike.NO_STRIKE,
+            None: None,
+        }[value]
+
     @lazyproperty
     def color(self):
         """