104 lines
2.0 KiB
Go
104 lines
2.0 KiB
Go
package images
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import (
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"bytes"
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"image"
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)
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func GenerateImageVariants(cImg image.Image) ([]IdentityImage, error) {
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var iis []IdentityImage
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var err error
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for _, s := range ResizeDimensions {
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rImg := Resize(s, cImg)
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bb := bytes.NewBuffer([]byte{})
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err = EncodeToBestSize(bb, rImg, s)
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if err != nil {
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return nil, err
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}
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ii := IdentityImage{
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Name: ResizeDimensionToName[s],
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Payload: bb.Bytes(),
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Width: rImg.Bounds().Dx(),
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Height: rImg.Bounds().Dy(),
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FileSize: bb.Len(),
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ResizeTarget: int(s),
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}
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iis = append(iis, ii)
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}
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return iis, nil
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}
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func GenerateIdentityImages(filepath string, aX, aY, bX, bY int) ([]IdentityImage, error) {
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img, err := Decode(filepath)
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if err != nil {
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return nil, err
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}
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cropRect := image.Rectangle{
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Min: image.Point{X: aX, Y: aY},
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Max: image.Point{X: bX, Y: bY},
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}
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cImg, err := Crop(img, cropRect)
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if err != nil {
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return nil, err
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}
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return GenerateImageVariants(cImg)
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}
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func GenerateIdentityImagesFromURL(url string) ([]IdentityImage, error) {
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img, err := DecodeFromURL(url)
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if err != nil {
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return nil, err
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}
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cImg, err := CropCenter(img)
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if err != nil {
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return nil, err
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}
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return GenerateImageVariants(cImg)
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}
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func GenerateBannerImage(filepath string, aX, aY, bX, bY int) (*IdentityImage, error) {
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img, err := Decode(filepath)
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if err != nil {
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return nil, err
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}
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cropRect := image.Rectangle{
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Min: image.Point{X: aX, Y: aY},
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Max: image.Point{X: bX, Y: bY},
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}
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croppedImg, err := Crop(img, cropRect)
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if err != nil {
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return nil, err
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}
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resizedImg := ShrinkOnly(BannerDim, croppedImg)
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sizeLimits := GetBannerDimensionLimits()
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bb := bytes.NewBuffer([]byte{})
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err = EncodeToLimits(bb, resizedImg, sizeLimits)
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if err != nil {
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return nil, err
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}
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ii := &IdentityImage{
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Name: BannerIdentityName,
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Payload: bb.Bytes(),
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Width: resizedImg.Bounds().Dx(),
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Height: resizedImg.Bounds().Dy(),
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FileSize: bb.Len(),
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ResizeTarget: int(BannerDim),
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}
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return ii, nil
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}
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