two version of R2R are here HEAD master

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diff --git a/.venv/lib/python3.12/site-packages/pptx/oxml/chart/shared.py b/.venv/lib/python3.12/site-packages/pptx/oxml/chart/shared.py
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+"""Shared oxml objects for charts."""
+
+from __future__ import annotations
+
+from pptx.oxml import parse_xml
+from pptx.oxml.ns import nsdecls
+from pptx.oxml.simpletypes import (
+    ST_LayoutMode,
+    XsdBoolean,
+    XsdDouble,
+    XsdString,
+    XsdUnsignedInt,
+)
+from pptx.oxml.xmlchemy import (
+    BaseOxmlElement,
+    OptionalAttribute,
+    RequiredAttribute,
+    ZeroOrOne,
+)
+
+
+class CT_Boolean(BaseOxmlElement):
+    """
+    Common complex type used for elements having a True/False value.
+    """
+
+    val = OptionalAttribute("val", XsdBoolean, default=True)
+
+
+class CT_Boolean_Explicit(BaseOxmlElement):
+    """Always spells out the `val` attribute, e.g. `val=1`.
+
+    At least one boolean element is improperly interpreted by one or more
+    versions of PowerPoint. The `c:overlay` element is interpreted as |False|
+    when no `val` attribute is present, contrary to the behavior described in
+    the schema. A remedy for this is to interpret a missing `val` attribute
+    as |True| (consistent with the spec), but always write the attribute
+    whenever there is occasion for changing the element.
+    """
+
+    _val = OptionalAttribute("val", XsdBoolean, default=True)
+
+    @property
+    def val(self):
+        return self._val
+
+    @val.setter
+    def val(self, value):
+        val_str = "1" if bool(value) is True else "0"
+        self.set("val", val_str)
+
+
+class CT_Double(BaseOxmlElement):
+    """
+    Used for floating point values.
+    """
+
+    val = RequiredAttribute("val", XsdDouble)
+
+
+class CT_Layout(BaseOxmlElement):
+    """
+    ``<c:layout>`` custom element class
+    """
+
+    manualLayout = ZeroOrOne("c:manualLayout", successors=("c:extLst",))
+
+    @property
+    def horz_offset(self):
+        """
+        The float value in ./c:manualLayout/c:x when
+        c:layout/c:manualLayout/c:xMode@val == "factor". 0.0 if that XPath
+        expression finds no match.
+        """
+        manualLayout = self.manualLayout
+        if manualLayout is None:
+            return 0.0
+        return manualLayout.horz_offset
+
+    @horz_offset.setter
+    def horz_offset(self, offset):
+        """
+        Set the value of ./c:manualLayout/c:x@val to *offset* and
+        ./c:manualLayout/c:xMode@val to "factor". Remove ./c:manualLayout if
+        *offset* == 0.
+        """
+        if offset == 0.0:
+            self._remove_manualLayout()
+            return
+        manualLayout = self.get_or_add_manualLayout()
+        manualLayout.horz_offset = offset
+
+
+class CT_LayoutMode(BaseOxmlElement):
+    """
+    Used for ``<c:xMode>``, ``<c:yMode>``, ``<c:wMode>``, and ``<c:hMode>``
+    child elements of CT_ManualLayout.
+    """
+
+    val = OptionalAttribute("val", ST_LayoutMode, default=ST_LayoutMode.FACTOR)
+
+
+class CT_ManualLayout(BaseOxmlElement):
+    """
+    ``<c:manualLayout>`` custom element class
+    """
+
+    _tag_seq = (
+        "c:layoutTarget",
+        "c:xMode",
+        "c:yMode",
+        "c:wMode",
+        "c:hMode",
+        "c:x",
+        "c:y",
+        "c:w",
+        "c:h",
+        "c:extLst",
+    )
+    xMode = ZeroOrOne("c:xMode", successors=_tag_seq[2:])
+    x = ZeroOrOne("c:x", successors=_tag_seq[6:])
+    del _tag_seq
+
+    @property
+    def horz_offset(self):
+        """
+        The float value in ./c:x@val when ./c:xMode@val == "factor". 0.0 when
+        ./c:x is not present or ./c:xMode@val != "factor".
+        """
+        x, xMode = self.x, self.xMode
+        if x is None or xMode is None or xMode.val != ST_LayoutMode.FACTOR:
+            return 0.0
+        return x.val
+
+    @horz_offset.setter
+    def horz_offset(self, offset):
+        """
+        Set the value of ./c:x@val to *offset* and ./c:xMode@val to "factor".
+        """
+        self.get_or_add_xMode().val = ST_LayoutMode.FACTOR
+        self.get_or_add_x().val = offset
+
+
+class CT_NumFmt(BaseOxmlElement):
+    """
+    ``<c:numFmt>`` element specifying the formatting for number labels on a
+    tick mark or data point.
+    """
+
+    formatCode = RequiredAttribute("formatCode", XsdString)
+    sourceLinked = OptionalAttribute("sourceLinked", XsdBoolean)
+
+
+class CT_Title(BaseOxmlElement):
+    """`c:title` custom element class."""
+
+    _tag_seq = ("c:tx", "c:layout", "c:overlay", "c:spPr", "c:txPr", "c:extLst")
+    tx = ZeroOrOne("c:tx", successors=_tag_seq[1:])
+    spPr = ZeroOrOne("c:spPr", successors=_tag_seq[4:])
+    del _tag_seq
+
+    def get_or_add_tx_rich(self):
+        """Return `c:tx/c:rich`, newly created if not present.
+
+        Return the `c:rich` grandchild at `c:tx/c:rich`. Both the `c:tx` and
+        `c:rich` elements are created if not already present. Any
+        `c:tx/c:strRef` element is removed. (Such an element would contain
+        a cell reference for the axis title text in the chart's Excel
+        worksheet.)
+        """
+        tx = self.get_or_add_tx()
+        tx._remove_strRef()
+        return tx.get_or_add_rich()
+
+    @property
+    def tx_rich(self):
+        """Return `c:tx/c:rich` or |None| if not present."""
+        richs = self.xpath("c:tx/c:rich")
+        if not richs:
+            return None
+        return richs[0]
+
+    @staticmethod
+    def new_title():
+        """Return "loose" `c:title` element containing default children."""
+        return parse_xml(
+            "<c:title %s>" "  <c:layout/>" '  <c:overlay val="0"/>' "</c:title>" % nsdecls("c")
+        )
+
+
+class CT_Tx(BaseOxmlElement):
+    """
+    ``<c:tx>`` element containing the text for a label on a data point or
+    other chart item.
+    """
+
+    strRef = ZeroOrOne("c:strRef")
+    rich = ZeroOrOne("c:rich")
+
+    def _new_rich(self):
+        return parse_xml(
+            "<c:rich %s>"
+            "  <a:bodyPr/>"
+            "  <a:lstStyle/>"
+            "  <a:p>"
+            "    <a:pPr>"
+            "      <a:defRPr/>"
+            "    </a:pPr>"
+            "  </a:p>"
+            "</c:rich>" % nsdecls("c", "a")
+        )
+
+
+class CT_UnsignedInt(BaseOxmlElement):
+    """
+    ``<c:idx>`` element and others.
+    """
+
+    val = RequiredAttribute("val", XsdUnsignedInt)