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image.go
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image.go
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package u
import (
"github.com/disintegration/imaging"
"sync"
)
type img struct {}
var _img *img
var _imgOnce sync.Once
// Image 获取img对象
func Image() *img {
_imgOnce.Do(func() {
_img = &img{}
})
return _img
}
// ResizePreserveAspectRatio 保持纵横比调整图片
func (receiver *img)ResizePreserveAspectRatio(width int, sourceImagePath string, savePath string) error {
src, err := imaging.Open(sourceImagePath)
if err != nil {
return err
}
dstImage := imaging.Resize(src, width, 0, imaging.Lanczos)
err = OS().CheckCreateDirs(savePath)
if err != nil {
return err
}
err = imaging.Save(dstImage, savePath)
if err != nil {
return err
}
return nil
}
// Resize 调整图片
func (receiver *img) Resize(sourceImagePath string, width, height int, savePath string) error {
src, err := imaging.Open(sourceImagePath)
if err != nil {
return err
}
dstImage := imaging.Resize(src, width, height, imaging.Lanczos)
err = OS().CheckCreateDirs(savePath)
if err != nil {
return err
}
err = imaging.Save(dstImage, savePath)
if err != nil {
return err
}
return nil
}