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feat(backgrounds): resize images to a maximum of 4K

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Resolves https://kolaente.dev/vikunja/vikunja/issues/1373#issuecomment-43491
This commit is contained in:
kolaente
2024-04-22 18:29:40 +02:00
parent 9b5ae38784
commit aec60f3591
5 changed files with 30 additions and 15 deletions
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28
pkg/modules/background/handler/background.go
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@ -17,10 +17,13 @@
package handler
import (
"bytes"
_ "image/gif" // To make sure the decoder used for generating blurHashes recognizes gifs
_ "image/jpeg" // To make sure the decoder used for generating blurHashes recognizes jpgs
_ "image/png" // To make sure the decoder used for generating blurHashes recognizes pngs
"github.com/disintegration/imaging"
_ "golang.org/x/image/bmp" // To make sure the decoder used for generating blurHashes recognizes bmps
_ "golang.org/x/image/tiff" // To make sure the decoder used for generating blurHashes recognizes tiffs
_ "golang.org/x/image/webp" // To make sure the decoder used for generating blurHashes recognizes tiffs
@ -220,7 +223,30 @@ func (bp *BackgroundProvider) UploadBackground(c echo.Context) error {
func SaveBackgroundFile(s *xorm.Session, auth web.Auth, project *models.Project, srcf io.ReadSeeker, filename string, filesize uint64) (err error) {
_, _ = srcf.Seek(0, io.SeekStart)
f, err := files.Create(srcf, filename, filesize, auth)
src, err := imaging.Decode(srcf)
if err != nil {
return err
}
_, _ = srcf.Seek(0, io.SeekStart)
imgConfig, _, err := image.DecodeConfig(srcf)
if err != nil {
return err
}
height := imgConfig.Height
if imgConfig.Height > background.MaxBackgroundImageHeight {
height = background.MaxBackgroundImageHeight
}
buf := bytes.Buffer{}
dst := imaging.Resize(src, 0, height, imaging.Lanczos)
err = imaging.Encode(&buf, dst, imaging.JPEG, imaging.JPEGQuality(80))
if err != nil {
return err
}
f, err := files.Create(&buf, filename, filesize, auth)
if err != nil {
return err
}