1 files changed, 98 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/openpyxl/chart/trendline.py b/.venv/lib/python3.12/site-packages/openpyxl/chart/trendline.py
new file mode 100644
index 00000000..bf6d2366
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/openpyxl/chart/trendline.py
@@ -0,0 +1,98 @@
+# Copyright (c) 2010-2024 openpyxl
+
+from openpyxl.descriptors.serialisable import Serialisable
+from openpyxl.descriptors import (
+    Typed,
+    String,
+    Alias
+)
+from openpyxl.descriptors.excel import ExtensionList
+from openpyxl.descriptors.nested import (
+    NestedBool,
+    NestedInteger,
+    NestedFloat,
+    NestedSet
+)
+
+from .data_source import NumFmt
+from .shapes import GraphicalProperties
+from .text import RichText, Text
+from .layout import Layout
+
+
+class TrendlineLabel(Serialisable):
+
+    tagname = "trendlineLbl"
+
+    layout = Typed(expected_type=Layout, allow_none=True)
+    tx = Typed(expected_type=Text, allow_none=True)
+    numFmt = Typed(expected_type=NumFmt, allow_none=True)
+    spPr = Typed(expected_type=GraphicalProperties, allow_none=True)
+    graphicalProperties = Alias("spPr")
+    txPr = Typed(expected_type=RichText, allow_none=True)
+    textProperties = Alias("txPr")
+    extLst = Typed(expected_type=ExtensionList, allow_none=True)
+
+    __elements__ = ('layout', 'tx', 'numFmt', 'spPr', 'txPr')
+
+    def __init__(self,
+                 layout=None,
+                 tx=None,
+                 numFmt=None,
+                 spPr=None,
+                 txPr=None,
+                 extLst=None,
+                ):
+        self.layout = layout
+        self.tx = tx
+        self.numFmt = numFmt
+        self.spPr = spPr
+        self.txPr = txPr
+
+
+class Trendline(Serialisable):
+
+    tagname = "trendline"
+
+    name = String(allow_none=True)
+    spPr = Typed(expected_type=GraphicalProperties, allow_none=True)
+    graphicalProperties = Alias('spPr')
+    trendlineType = NestedSet(values=(['exp', 'linear', 'log', 'movingAvg', 'poly', 'power']))
+    order = NestedInteger(allow_none=True)
+    period = NestedInteger(allow_none=True)
+    forward = NestedFloat(allow_none=True)
+    backward = NestedFloat(allow_none=True)
+    intercept = NestedFloat(allow_none=True)
+    dispRSqr = NestedBool(allow_none=True)
+    dispEq = NestedBool(allow_none=True)
+    trendlineLbl = Typed(expected_type=TrendlineLabel, allow_none=True)
+    extLst = Typed(expected_type=ExtensionList, allow_none=True)
+
+    __elements__ = ('spPr', 'trendlineType', 'order', 'period', 'forward',
+                    'backward', 'intercept', 'dispRSqr', 'dispEq', 'trendlineLbl')
+
+    def __init__(self,
+                 name=None,
+                 spPr=None,
+                 trendlineType='linear',
+                 order=None,
+                 period=None,
+                 forward=None,
+                 backward=None,
+                 intercept=None,
+                 dispRSqr=None,
+                 dispEq=None,
+                 trendlineLbl=None,
+                 extLst=None,
+                ):
+        self.name = name
+        self.spPr = spPr
+        self.trendlineType = trendlineType
+        self.order = order
+        self.period = period
+        self.forward = forward
+        self.backward = backward
+        self.intercept = intercept
+        self.dispRSqr = dispRSqr
+        self.dispEq = dispEq
+        self.trendlineLbl = trendlineLbl