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chore(attachments): refactor building image preview

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This commit is contained in:
kolaente
2024-09-06 09:43:41 +02:00
parent cbc63c853d
commit 02c1de55c4
7 changed files with 44 additions and 39 deletions
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46
pkg/models/task_attachment.go
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@@ -213,10 +213,11 @@ func (ta *TaskAttachment) GetPreviewFromCache(previewSize PreviewSize) []byte {
type PreviewSize string
const (
PreviewSmall PreviewSize = "sm"
PreviewMedium PreviewSize = "md"
PreviewLarge PreviewSize = "lg"
PreviewExtraLarge PreviewSize = "xl"
PreviewSizeUnknown PreviewSize = "unknown"
PreviewSmall PreviewSize = "sm"
PreviewMedium PreviewSize = "md"
PreviewLarge PreviewSize = "lg"
PreviewExtraLarge PreviewSize = "xl"
)
func (previewSize PreviewSize) GetSize() int {
@@ -229,22 +230,37 @@ func (previewSize PreviewSize) GetSize() int {
return 400
case PreviewExtraLarge:
return 800
case PreviewSizeUnknown:
return 0
default:
return 200
}
}
func resize(img image.Image, size int) *image.NRGBA {
x := img.Bounds().Size().X
y := img.Bounds().Size().Y
heightSmaller := x > y
var resizedImg *image.NRGBA
if heightSmaller {
resizedImg = imaging.Resize(img, 0, size, imaging.Lanczos)
} else {
resizedImg = imaging.Resize(img, size, 0, imaging.Lanczos)
func GetPreviewSizeFromString(size string) PreviewSize {
switch size {
case "sm":
return PreviewSmall
case "md":
return PreviewMedium
case "lg":
return PreviewLarge
case "xl":
return PreviewExtraLarge
}
log.Debugf("Resized attachment image from %vx%v to %vx%v for a preview", x, y, resizedImg.Bounds().Size().X, resizedImg.Bounds().Size().Y)
return PreviewSizeUnknown
}
func resizeImage(img image.Image, width int) *image.NRGBA {
resizedImg := imaging.Resize(img, width, 0, imaging.Lanczos)
log.Debugf(
"Resized attachment image from %vx%v to %vx%v for a preview",
img.Bounds().Size().X,
img.Bounds().Size().Y,
resizedImg.Bounds().Size().X,
resizedImg.Bounds().Size().Y,
)
return resizedImg
}
@@ -256,7 +272,7 @@ func (ta *TaskAttachment) GenerateAndSavePreviewToCache(previewSize PreviewSize)
}
// Scale down the image to a minimum size
resizedImg := resize(img, previewSize.GetSize())
resizedImg := resizeImage(img, previewSize.GetSize())
// Get the raw bytes of the resized image
buf := &bytes.Buffer{}