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chore: set max thumbnail width to home/explore image max width (#3852) 

* Set max thumbnail width to timeline img max width

* Prevent images less than thumbnail size from being scaled up

* Apply suggestions from code review

---------

Co-authored-by: boojack <24653555+boojack@users.noreply.github.com>
This commit is contained in:
RoccoSmit 2024-08-31 05:37:07 +10:00 committed by GitHub
parent 0156c7e11f
commit bfe57b9202
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1 changed files with 11 additions and 2 deletions
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13
server/router/api/v1/resource_service.go
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@ -5,6 +5,7 @@ import (
"context" "context"
"encoding/binary" "encoding/binary"
"fmt" "fmt"
"image"
"io" "io"
"log/slog" "log/slog"
"os" "os"
@ -434,11 +435,19 @@ func (s *APIV1Service) getOrGenerateThumbnail(resource *store.Resource) ([]byte,
if err != nil { if err != nil {
return nil, errors.Wrap(err, "failed to get resource blob") return nil, errors.Wrap(err, "failed to get resource blob")
} }
image, err := imaging.Decode(bytes.NewReader(blob), imaging.AutoOrientation(true)) img, err := imaging.Decode(bytes.NewReader(blob), imaging.AutoOrientation(true))
if err != nil { if err != nil {
return nil, errors.Wrap(err, "failed to decode thumbnail image") return nil, errors.Wrap(err, "failed to decode thumbnail image")
} }
thumbnailImage := imaging.Resize(image, 512, 0, imaging.Lanczos)
thumbnailMaxWidth := 700 // equal to home/explore screen image max width
var thumbnailImage image.Image
if img.Bounds().Max.X > thumbnailMaxWidth {
thumbnailImage = imaging.Resize(img, thumbnailMaxWidth, 0, imaging.Lanczos)
} else {
thumbnailImage = img
}
if err := imaging.Save(thumbnailImage, filePath); err != nil { if err := imaging.Save(thumbnailImage, filePath); err != nil {
return nil, errors.Wrap(err, "failed to save thumbnail file") return nil, errors.Wrap(err, "failed to save thumbnail file")
} }