thumbnail

func CenterResize ¶

func CenterResize(src image.Image, width int, height int) (image.Image, error)

CenterResize by:

1. Finding the smallest dimension (width or height)
2. Scaling the image down while keeping aspect ratio
3. Cropping excess from largest dimension (width or height) by cutting an equal amount on both sides, leaving the image centered

4. Store the resized version with suffix

func CreateThumbnail ¶

func CreateThumbnail(i model.Item) (model.Image, error)

CreateThumbnail by looking at the image MIMEtype and then take appropriate actions to create it.

For images, scale the image to 300x300px without changing the ratio by first scaling it by the smallest side too 300px, then cropping/trimming the excess of the longest side

func GetThumbnailPath ¶

func GetThumbnailPath(mediaPath string) string

func IsThumbnail ¶

func IsThumbnail(imgPath string) bool

func LoadImage ¶

func LoadImage(imgPath string) (model.Image, error)

LoadImage by: 1. ensuring there's a file on the path 2. determine encoding, width and height 3. encode to image.Image to allow working downstream

func SaveImage ¶

func SaveImage(img image.Image, encoding string, path string) error

SaveImage by: 1. Opening file 2. Writing image using preferred encoding