pptx.shapes.graphfrm 源代码

# encoding: utf-8

"""Graphic Frame shape and related objects.

A graphic frame is a common container for table, chart, smart art, and media
objects.
"""

from pptx.enum.shapes import MSO_SHAPE_TYPE
from pptx.shapes.base import BaseShape
from pptx.shared import ParentedElementProxy
from pptx.spec import (
    GRAPHIC_DATA_URI_CHART,
    GRAPHIC_DATA_URI_OLEOBJ,
    GRAPHIC_DATA_URI_TABLE,
)
from pptx.table import Table


[文档]class GraphicFrame(BaseShape): """Container shape for table, chart, smart art, and media objects. Corresponds to a ``<p:graphicFrame>`` element in the shape tree. """ @property def chart(self): """The |Chart| object containing the chart in this graphic frame. Raises |ValueError| if this graphic frame does not contain a chart. """ if not self.has_chart: raise ValueError("shape does not contain a chart") return self.chart_part.chart @property def chart_part(self): """The |ChartPart| object containing the chart in this graphic frame.""" return self.part.related_part(self._element.chart_rId) @property def has_chart(self): """|True| if this graphic frame contains a chart object. |False| otherwise. When |True|, the chart object can be accessed using the ``.chart`` property. """ return self._element.graphicData_uri == GRAPHIC_DATA_URI_CHART @property def has_table(self): """|True| if this graphic frame contains a table object, |False| otherwise. When |True|, the table object can be accessed using the `.table` property. """ return self._element.graphicData_uri == GRAPHIC_DATA_URI_TABLE @property def ole_format(self): """Optional _OleFormat object for this graphic-frame shape. Raises `ValueError` on a GraphicFrame instance that does not contain an OLE object. An shape that contains an OLE object will have `.shape_type` of either `EMBEDDED_OLE_OBJECT` or `LINKED_OLE_OBJECT`. """ if not self._element.has_oleobj: raise ValueError("not an OLE-object shape") return _OleFormat(self._element.graphicData, self._parent) @property def shadow(self): """Unconditionally raises |NotImplementedError|. Access to the shadow effect for graphic-frame objects is content-specific (i.e. different for charts, tables, etc.) and has not yet been implemented. """ raise NotImplementedError("shadow property on GraphicFrame not yet supported") @property def shape_type(self): """Optional member of `MSO_SHAPE_TYPE` identifying the type of this shape. Possible values are ``MSO_SHAPE_TYPE.CHART``, ``MSO_SHAPE_TYPE.TABLE``, ``MSO_SHAPE_TYPE.EMBEDDED_OLE_OBJECT``, ``MSO_SHAPE_TYPE.LINKED_OLE_OBJECT``. This value is `None` when none of these four types apply, for example when the shape contains SmartArt. """ graphicData_uri = self._element.graphicData_uri if graphicData_uri == GRAPHIC_DATA_URI_CHART: return MSO_SHAPE_TYPE.CHART elif graphicData_uri == GRAPHIC_DATA_URI_TABLE: return MSO_SHAPE_TYPE.TABLE elif graphicData_uri == GRAPHIC_DATA_URI_OLEOBJ: return ( MSO_SHAPE_TYPE.EMBEDDED_OLE_OBJECT if self._element.is_embedded_ole_obj else MSO_SHAPE_TYPE.LINKED_OLE_OBJECT ) else: return None @property def table(self): """ The |Table| object contained in this graphic frame. Raises |ValueError| if this graphic frame does not contain a table. """ if not self.has_table: raise ValueError("shape does not contain a table") tbl = self._element.graphic.graphicData.tbl return Table(tbl, self)
class _OleFormat(ParentedElementProxy): """Provides attributes on an embedded OLE object.""" def __init__(self, graphicData, parent): super(_OleFormat, self).__init__(graphicData, parent) self._graphicData = graphicData @property def blob(self): """Optional bytes of OLE object, suitable for loading or saving as a file. This value is None if the embedded object does not represent a "file". """ return self.part.related_part(self._graphicData.blob_rId).blob @property def prog_id(self): """str "progId" attribute of this embedded OLE object. The progId is a str like "Excel.Sheet.12" that identifies the "file-type" of the embedded object, or perhaps more precisely, the application (aka. "server" in OLE parlance) to be used to open this object. """ return self._graphicData.progId @property def show_as_icon(self): """True when OLE object should appear as an icon (rather than preview).""" return self._graphicData.showAsIcon