printer

package

v0.0.0-...-ffc1615 Latest Latest Go to latest Published: Nov 28, 2023 License: MIT Imports: 12 Imported by: 1

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const (
	PrintWidth = 384
)

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var DefaultFindOptions = FindOptions{}

DefaultFindOptions represents the default discovery options.

func PrepareImage(img image.Image, threshold bool) image.Image

PrepareImage prepares an image (scaling, thresholding, dithering) so that it can be passed to printer.Print().

type FindOptions struct {
	// bluetooth device name, ignored if empty
	Name string
	// HCI address, ignored if empty
	Address string
}

FindOptions represents options for device discovery.

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

func Find(ctx context.Context, opts FindOptions) (*Printer, error)

Find finds a BLE printer and connects to it. Use ctx for timeout. Close() after usage.

func (p *Printer) Close()

Close closes the connection.

func (p *Printer) Print(ctx context.Context, img image.Image) error

Print prints an image. You may pass it through PrepareImage() beforehand.