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Wand image backend: Always clone images before performing oprations on them

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This commit is contained in:
Karl Hobley 2014-06-02 09:52:33 +01:00
parent d88a5e596b
commit 351b74c94b
1 changed files with 7 additions and 4 deletions
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11
wagtail/wagtailimages/backends/wand.py
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@ -18,8 +18,9 @@ class WandBackend(BaseImageBackend):
image.save(file=output)
def resize(self, image, size):
image.resize(size[0], size[1])
return image
new_image = image.clone()
new_image.resize(size[0], size[1])
return new_image
def crop_to_centre(self, image, size):
(original_width, original_height) = image.size
@ -34,7 +35,9 @@ class WandBackend(BaseImageBackend):
left = (original_width - final_width) / 2
top = (original_height - final_height) / 2
image.crop(
new_image = image.clone()
new_image.crop(
left=left, top=top, right=left + final_width, bottom=top + final_height
)
return image
return new_image