56 lines
962 B
Go
56 lines
962 B
Go
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package image_helpers
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import (
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"image"
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"os"
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)
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type PhotoDimensions struct {
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Width int
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Height int
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}
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func GetPhotoDimensions(imagePath string) (*PhotoDimensions, error) {
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photoFile, err := os.Open(imagePath)
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if err != nil {
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return nil, err
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}
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defer photoFile.Close()
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config, _, err := image.DecodeConfig(photoFile)
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if err != nil {
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return nil, err
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}
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return &PhotoDimensions{
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Width: config.Width,
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Height: config.Height,
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}, nil
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}
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func PhotoDimensionsFromRect(rect image.Rectangle) PhotoDimensions {
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return PhotoDimensions{
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Width: rect.Bounds().Max.X,
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Height: rect.Bounds().Max.Y,
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}
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}
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func (dimensions *PhotoDimensions) ThumbnailScale() PhotoDimensions {
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aspect := float64(dimensions.Width) / float64(dimensions.Height)
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var width, height int
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if aspect > 1 {
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width = 1024
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height = int(1024 / aspect)
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} else {
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width = int(1024 * aspect)
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height = 1024
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}
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return PhotoDimensions{
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Width: width,
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Height: height,
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}
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}
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