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authorS. Solomon Darnell2025-03-28 21:52:21 -0500
committerS. Solomon Darnell2025-03-28 21:52:21 -0500
commit4a52a71956a8d46fcb7294ac71734504bb09bcc2 (patch)
treeee3dc5af3b6313e921cd920906356f5d4febc4ed /.venv/lib/python3.12/site-packages/docx/parts/image.py
parentcc961e04ba734dd72309fb548a2f97d67d578813 (diff)
downloadgn-ai-master.tar.gz
two version of R2R are hereHEADmaster
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+"""The proxy class for an image part, and related objects."""
+
+from __future__ import annotations
+
+import hashlib
+from typing import TYPE_CHECKING
+
+from docx.image.image import Image
+from docx.opc.part import Part
+from docx.shared import Emu, Inches
+
+if TYPE_CHECKING:
+ from docx.opc.package import OpcPackage
+ from docx.opc.packuri import PackURI
+
+
+class ImagePart(Part):
+ """An image part.
+
+ Corresponds to the target part of a relationship with type RELATIONSHIP_TYPE.IMAGE.
+ """
+
+ def __init__(
+ self, partname: PackURI, content_type: str, blob: bytes, image: Image | None = None
+ ):
+ super(ImagePart, self).__init__(partname, content_type, blob)
+ self._image = image
+
+ @property
+ def default_cx(self):
+ """Native width of this image, calculated from its width in pixels and
+ horizontal dots per inch (dpi)."""
+ px_width = self.image.px_width
+ horz_dpi = self.image.horz_dpi
+ width_in_inches = px_width / horz_dpi
+ return Inches(width_in_inches)
+
+ @property
+ def default_cy(self):
+ """Native height of this image, calculated from its height in pixels and
+ vertical dots per inch (dpi)."""
+ px_height = self.image.px_height
+ horz_dpi = self.image.horz_dpi
+ height_in_emu = int(round(914400 * px_height / horz_dpi))
+ return Emu(height_in_emu)
+
+ @property
+ def filename(self):
+ """Filename from which this image part was originally created.
+
+ A generic name, e.g. 'image.png', is substituted if no name is available, for
+ example when the image was loaded from an unnamed stream. In that case a default
+ extension is applied based on the detected MIME type of the image.
+ """
+ if self._image is not None:
+ return self._image.filename
+ return "image.%s" % self.partname.ext
+
+ @classmethod
+ def from_image(cls, image: Image, partname: PackURI):
+ """Return an |ImagePart| instance newly created from `image` and assigned
+ `partname`."""
+ return ImagePart(partname, image.content_type, image.blob, image)
+
+ @property
+ def image(self) -> Image:
+ if self._image is None:
+ self._image = Image.from_blob(self.blob)
+ return self._image
+
+ @classmethod
+ def load(cls, partname: PackURI, content_type: str, blob: bytes, package: OpcPackage):
+ """Called by ``docx.opc.package.PartFactory`` to load an image part from a
+ package being opened by ``Document(...)`` call."""
+ return cls(partname, content_type, blob)
+
+ @property
+ def sha1(self):
+ """SHA1 hash digest of the blob of this image part."""
+ return hashlib.sha1(self.blob).hexdigest()