89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
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package catprinter
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import (
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"github.com/makeworld-the-better-one/dither/v2"
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"log"
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)
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type PrinterOptions struct {
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bestQuality bool
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autoRotate bool
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dither bool
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blackPoint float32
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ditherAlgo dither.ErrorDiffusionMatrix
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}
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// NewOptions creates a new PrinterOptions object with sane defaults.
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func NewOptions() *PrinterOptions {
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return &PrinterOptions{
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bestQuality: true,
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autoRotate: false,
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dither: true,
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ditherAlgo: dither.FloydSteinberg,
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blackPoint: 0.5,
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}
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}
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// SetBestQuality sets the quality option. Default is true.
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// If true, prints slower with higher thermal strength, resulting in a darker image.
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// Recommended for self-adhesive paper.
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func (o *PrinterOptions) SetBestQuality(best bool) *PrinterOptions {
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o.bestQuality = best
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return o
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}
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// BestQuality returns the quality option.
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func (o *PrinterOptions) BestQuality() bool {
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return o.bestQuality
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}
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// SetAutoRotate sets the auto rotate option. Default is false.
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// If true and the image is landscape, it gets rotated to be printed in higher resolution.
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func (o *PrinterOptions) SetAutoRotate(rotate bool) *PrinterOptions {
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o.autoRotate = rotate
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return o
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}
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// AutoRotate returns the auto rotate option.
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func (o *PrinterOptions) AutoRotate() bool {
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return o.autoRotate
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}
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// SetDither sets the dither option. Default is true.
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// If false, dithering is disabled, and the image is converted to black/white and each pixel is printed if less white than BlackPoint.
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func (o *PrinterOptions) SetDither(dither bool) *PrinterOptions {
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o.dither = dither
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return o
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}
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// Dither returns the dither option.
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func (o *PrinterOptions) Dither() bool {
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return o.dither
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}
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// SetDitherAlgo sets the dither algorithm. Default is FloydSteinberg.
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func (o *PrinterOptions) SetDitherAlgo(algo dither.ErrorDiffusionMatrix) *PrinterOptions {
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o.ditherAlgo = algo
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return o
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}
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// DitherAlgo returns the dither algorithm.
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func (o *PrinterOptions) DitherAlgo() dither.ErrorDiffusionMatrix {
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return o.ditherAlgo
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}
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// SetBlackPoint sets the black point. Default is 0.5.
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// If 0.5, a gray pixel will be printed as black if it's less than 50% white. Only effective if Dither is disabled.
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func (o *PrinterOptions) SetBlackPoint(bp float32) *PrinterOptions {
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if bp < 0 || bp > 1 {
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log.Panic("Invalid black point value. Must be between 0 and 1.")
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}
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o.blackPoint = bp
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return o
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}
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// BlackPoint returns the black point.
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func (o *PrinterOptions) BlackPoint() float32 {
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return o.blackPoint
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}
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