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Allow images to be cropped without being resized

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Introduces the Crop method for image processing which implements gift.CropToSize. Also allows a smartCrop without resizing, and updates the documentation.

Fixes #9499
This commit is contained in:
John Elliott
2022-02-22 16:50:23 +00:00
committed by Bjørn Erik Pedersen
parent aebde49b88
commit 7732da9f93
9 changed files with 75 additions and 8 deletions
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13
resources/image.go
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@@ -181,6 +181,19 @@ func (i *imageResource) Resize(spec string) (resource.Image, error) {
})
}
// Crop the image to the specified dimensions without resizing using the given anchor point.
// Space delimited config: 200x300 TopLeft
func (i *imageResource) Crop(spec string) (resource.Image, error) {
conf, err := i.decodeImageConfig("crop", spec)
if err != nil {
return nil, err
}
return i.doWithImageConfig(conf, func(src image.Image) (image.Image, error) {
return i.Proc.ApplyFiltersFromConfig(src, conf)
})
}
// Fit scales down the image using the specified resample filter to fit the specified
// maximum width and height.
func (i *imageResource) Fit(spec string) (resource.Image, error) {