package thumb import ( "github.com/disintegration/imaging" "github.com/photoprism/photoprism/pkg/fs" ) type ResampleOption int const ( ResampleFillCenter ResampleOption = iota ResampleFillTopLeft ResampleFillBottomRight ResampleFit ResampleResize ResampleNearestNeighbor ResampleDefault ResamplePng ) var ResampleMethods = map[ResampleOption]string{ ResampleFillCenter: "center", ResampleFillTopLeft: "left", ResampleFillBottomRight: "right", ResampleFit: "fit", ResampleResize: "resize", } // ResampleOptions extracts filter, format, and method from resample options. func ResampleOptions(opts ...ResampleOption) (method ResampleOption, filter imaging.ResampleFilter, format fs.FileFormat) { method = ResampleFit filter = imaging.Lanczos format = fs.FormatJpeg for _, option := range opts { switch option { case ResamplePng: format = fs.FormatPng case ResampleNearestNeighbor: filter = imaging.NearestNeighbor case ResampleDefault: filter = Filter.Imaging() case ResampleFillTopLeft: method = ResampleFillTopLeft case ResampleFillCenter: method = ResampleFillCenter case ResampleFillBottomRight: method = ResampleFillBottomRight case ResampleFit: method = ResampleFit case ResampleResize: method = ResampleResize } } return method, filter, format }