scaler

package

v1.4.0 Latest Latest Go to latest Published: Apr 26, 2021 License: GPL-3.0 Imports: 15 Imported by: 0

Details

Package scaler provides utilities for scaling images.

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type Result struct {
	ImgData []byte
	Err     error
}

Result is a type which encapsulates a result from an image conversion.

type Scaler struct {
	// contains filtered or unexported fields
}

Scaler is a utility type which could be used for scaling images.

func New(ctx context.Context) *Scaler

New returns a new scaler, ready for use.

func (s *Scaler) Cancel()

Cancel stops the scaler and of its operations. Users may not use any further methods on cancelled scalers.

func (s *Scaler) Scale(
	ctx context.Context,
	img io.Reader,
	toWidth int,
) ([]byte, error)

Scale converts the image (img) to have width toWidth in pixels while preserving its aspect ratio.