status-go/images/manipulation.go

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package images
import (
"fmt"
"image"
"github.com/nfnt/resize"
"github.com/oliamb/cutter"
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"github.com/ethereum/go-ethereum/log"
)
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func Resize(size ResizeDimension, img image.Image) image.Image {
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var width, height uint
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switch {
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case img.Bounds().Max.X == img.Bounds().Max.Y:
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width, height = uint(size), uint(size)
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case img.Bounds().Max.X > img.Bounds().Max.Y:
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width, height = 0, uint(size)
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default:
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width, height = uint(size), 0
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}
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log.Info("resizing", "size", size, "width", width, "height", height, "img", img)
return resize.Resize(width, height, img, resize.Bilinear)
}
func Crop(img image.Image, rect image.Rectangle) (image.Image, error) {
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if img.Bounds().Max.X < rect.Max.X || img.Bounds().Max.Y < rect.Max.Y {
return nil, fmt.Errorf(
"crop dimensions out of bounds of image, image width '%dpx' & height '%dpx'; crop bottom right coordinate at X '%dpx' Y '%dpx'",
img.Bounds().Max.X, img.Bounds().Max.Y,
rect.Max.X, rect.Max.Y,
)
}
return cutter.Crop(img, cutter.Config{
Width: rect.Dx(),
Height: rect.Dy(),
Anchor: rect.Min,
})
}