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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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15
resources/images/image.go
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@@ -207,6 +207,21 @@ func (p *ImageProcessor) ApplyFiltersFromConfig(src image.Image, conf ImageConfi
switch conf.Action {
case "resize":
filters = append(filters, gift.Resize(conf.Width, conf.Height, conf.Filter))
case "crop":
if conf.AnchorStr == smartCropIdentifier {
bounds, err := p.smartCrop(src, conf.Width, conf.Height, conf.Filter)
if err != nil {
return nil, err
}
// First crop using the bounds returned by smartCrop.
filters = append(filters, gift.Crop(bounds))
// Then center crop the image to get an image the desired size without resizing.
filters = append(filters, gift.CropToSize(conf.Width, conf.Height, gift.CenterAnchor))
} else {
filters = append(filters, gift.CropToSize(conf.Width, conf.Height, conf.Anchor))
}
case "fill":
if conf.AnchorStr == smartCropIdentifier {
bounds, err := p.smartCrop(src, conf.Width, conf.Height, conf.Filter)