transforms
Module¶
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class
simpleimages.transforms.
BasePILTransform
[source]¶ Bases:
object
Base transform object that provides helper methods to transform
django.core.files.images.ImageFile
usingPIL
.Must subclass and override
transform_pil_image()
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__call__
(original_django_file)[source]¶ Returns the transformed version of
PIL.Image.Image
Uses
transform_pil_image()
to transform thePIL.Image.Image
.Parameters: original_django_file ( django.core.files.images.ImageFile
) – source fileReturns: transformed file Return type: django.core.files.File
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django_file_to_pil_image
(django_file)[source]¶ Converts a the file returned by
django.db.models.fields.ImageField
to a PIL image.Parameters: django_file ( django.db.models.fields.files.FieldFile
) – django fileReturn type: PIL.Image.Image
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pil_image_to_django_file
(pil_image)[source]¶ Gets a PIL image ready to be able to be saved using
django.db.models.fields.files.FieldFile.save()
It converts the mode first to
RGB
orL
, so that it can then save it as aJPEG
. It will save it as a progressiveJPEG
with a quality ofIMAGE_QUALITY
.Parameters: pil_image ( PIL.Image.Image
) – original imageReturns: transformed image Return type: django.core.files.base.ContentFile
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class
simpleimages.transforms.
Scale
(width=None, height=None)[source]¶ Bases:
simpleimages.transforms.BasePILTransform
Scales down an image to max height and/or width. If the original image is smaller than both/either specified dimensions than it will be left unchanged.
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__init__
(width=None, height=None)[source]¶ Initialize this class with a max height and/or width (in pixels).
Parameters: - height (int or float) – max height of scaled image
- width (int or float) – max width of scaled image
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transform_pil_image
(pil_image)[source]¶ Uses
PIL.Image.Image.transform()
to scale down the image.Based on this stackoverflow discussions, uses
PIL.Image.ANTIALIAS
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