forked from mattronix/escpos-go-labels
182 lines
5.7 KiB
Go
182 lines
5.7 KiB
Go
|
package main
|
|||
|
|
|
|||
|
|
import (
|
|||
|
|
"image"
|
|||
|
|
_ "image/jpeg"
|
|||
|
|
_ "image/png" //I'm needed
|
|||
|
|
"math"
|
|||
|
|
"os"
|
|||
|
|
|
|||
|
|
"github.com/kenshaw/escpos"
|
|||
|
|
"github.com/kenshaw/escpos/raster"
|
|||
|
|
)
|
|||
|
|
|
|||
|
|
// var ditherers []dither.Dither = []dither.Dither{
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "FloydSteinberg",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 7.0 / 48.0, 5.0 / 48.0},
|
|||
|
|
// []float32{3.0 / 48.0, 5.0 / 48.0, 7.0 / 48.0, 5.0 / 48.0, 3.0 / 48.0},
|
|||
|
|
// []float32{1.0 / 48.0, 3.0 / 48.0, 5.0 / 48.0, 3.0 / 48.0, 1.0 / 48.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "Stucki",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 8.0 / 42.0, 4.0 / 42.0},
|
|||
|
|
// []float32{2.0 / 42.0, 4.0 / 42.0, 8.0 / 42.0, 4.0 / 42.0, 2.0 / 42.0},
|
|||
|
|
// []float32{1.0 / 42.0, 2.0 / 42.0, 4.0 / 42.0, 2.0 / 42.0, 1.0 / 42.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "Atkinson",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 1.0 / 8.0, 1.0 / 8.0},
|
|||
|
|
// []float32{1.0 / 8.0, 1.0 / 8.0, 1.0 / 8.0, 0.0},
|
|||
|
|
// []float32{0.0, 1.0 / 8.0, 0.0, 0.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "Burkes",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 8.0 / 32.0, 4.0 / 32.0},
|
|||
|
|
// []float32{2.0 / 32.0, 4.0 / 32.0, 8.0 / 32.0, 4.0 / 32.0, 2.0 / 32.0},
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 0.0, 0.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "Sierra-3",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 5.0 / 32.0, 3.0 / 32.0},
|
|||
|
|
// []float32{2.0 / 32.0, 4.0 / 32.0, 5.0 / 32.0, 4.0 / 32.0, 2.0 / 32.0},
|
|||
|
|
// []float32{0.0, 2.0 / 32.0, 3.0 / 32.0, 2.0 / 32.0, 0.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "Sierra-2",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 4.0 / 16.0, 3.0 / 16.0},
|
|||
|
|
// []float32{1.0 / 16.0, 2.0 / 16.0, 3.0 / 16.0, 2.0 / 16.0, 1.0 / 16.0},
|
|||
|
|
// []float32{0.0, 0.0, 0.0, 0.0, 0.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// dither.Dither{
|
|||
|
|
// "Sierra-Lite",
|
|||
|
|
// dither.Settings{
|
|||
|
|
// [][]float32{
|
|||
|
|
// []float32{0.0, 0.0, 2.0 / 4.0},
|
|||
|
|
// []float32{1.0 / 4.0, 1.0 / 4.0, 0.0},
|
|||
|
|
// []float32{0.0, 0.0, 0.0},
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// },
|
|||
|
|
// }
|
|||
|
|
|
|||
|
|
const ESC = byte(27)
|
|||
|
|
|
|||
|
|
func pageWidth(widht int) []byte {
|
|||
|
|
return []byte{escpos.GS, 87, byte(widht), 0}
|
|||
|
|
}
|
|||
|
|
func pageMargin(margin int) []byte {
|
|||
|
|
return []byte{escpos.GS, 76, byte(margin), 0}
|
|||
|
|
}
|
|||
|
|
func pageMode() []byte {
|
|||
|
|
return []byte{ESC, 'L'}
|
|||
|
|
}
|
|||
|
|
func pageDirection(direction uint8) []byte {
|
|||
|
|
// https://www.epson-biz.com/modules/ref_escpos/index.php?content_id=55
|
|||
|
|
return []byte{ESC, 'T', direction}
|
|||
|
|
}
|
|||
|
|
func pagePrintArea(x, y, width, height int) []byte {
|
|||
|
|
return []byte{ESC, 'W',
|
|||
|
|
byte(x & 255), byte(x >> 8 & 255),
|
|||
|
|
byte(y & 255), byte(y >> 8 & 255),
|
|||
|
|
byte(width & 255), byte(width >> 8 & 255),
|
|||
|
|
byte(height & 255), byte(height >> 8 & 255)}
|
|||
|
|
}
|
|||
|
|
func offsetY(offset int) []byte {
|
|||
|
|
// A positive number specifies movement downward, and a negative number specifies movement upward.
|
|||
|
|
// The horizontal or vertical motion unit is used for the print direction set by ESC T.
|
|||
|
|
// When the starting position is set to the upper left or lower right of the print area using ESC T, the vertical motion unit is used.
|
|||
|
|
// When the starting position is set to the upper right or lower left of the print area using ESC T, the horizontal motion unit is used.
|
|||
|
|
return []byte{escpos.GS, '\\', byte(offset & 255), byte(offset >> 8 & 255)}
|
|||
|
|
}
|
|||
|
|
func offsetX(offset int) []byte {
|
|||
|
|
// A positive number specifies movement to the right, and a negative number specifies movement to the left.
|
|||
|
|
// When Standard mode is selected, the horizontal motion unit is used.
|
|||
|
|
// when Page mode is selected, the horizontal or vertical motion unit is used for the print direction set by ESC T.
|
|||
|
|
// When the starting position is set to the upper left or lower right of the print area using ESC T, the horizontal motion unit is used.
|
|||
|
|
// When the starting position is set to the upper right or lower left of the print area using ESC T, the vertical motion unit is used.
|
|||
|
|
return []byte{ESC, '\\', byte(offset & 255), byte(offset >> 8 & 255)}
|
|||
|
|
}
|
|||
|
|
func invert(n int) []byte {
|
|||
|
|
//When the LSB of n is 0, white/black reverse print mode is turned off.
|
|||
|
|
//n = 0 – 255
|
|||
|
|
return []byte{escpos.GS, byte('B'), byte(n)}
|
|||
|
|
}
|
|||
|
|
func disableSensors() []byte {
|
|||
|
|
return []byte{ESC, 'c', '3', 0}
|
|||
|
|
}
|
|||
|
|
func printSpeed(m int) []byte {
|
|||
|
|
// m = 0 – 9, 48 – 57 : slowest - fastest
|
|||
|
|
// m = 0 - 13 : slowest - fastest version V
|
|||
|
|
// [Default] 0 = Setting value of GS ( E <Function 5> customize value (a = 6)
|
|||
|
|
// m = 0
|
|||
|
|
//Slower print speed seems to retain a bit more quality in dithered images. pure B/W images do not have a noticable difference
|
|||
|
|
return []byte{escpos.GS, '(', 'K', 2, 0, 50, byte(m & 255), byte(m >> 8 & 255)}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func main() {
|
|||
|
|
f, err := os.OpenFile("/dev/usb/lp0", os.O_WRONLY|os.O_CREATE, 0)
|
|||
|
|
if err != nil {
|
|||
|
|
panic(err)
|
|||
|
|
}
|
|||
|
|
defer f.Close()
|
|||
|
|
|
|||
|
|
//load image
|
|||
|
|
imagef, err := os.Open("kia.png")
|
|||
|
|
if err != nil {
|
|||
|
|
panic(err)
|
|||
|
|
}
|
|||
|
|
defer imagef.Close()
|
|||
|
|
img, _, err := image.Decode(imagef)
|
|||
|
|
|
|||
|
|
ep := escpos.New(f)
|
|||
|
|
|
|||
|
|
ep.Init()
|
|||
|
|
ep.WriteRaw(pageWidth(int(math.Round((29.0 / 80.0) * 512))))
|
|||
|
|
ep.WriteRaw(pageMargin(1))
|
|||
|
|
ep.WriteRaw(printSpeed(13))
|
|||
|
|
// ditherer := ditherers[1]
|
|||
|
|
// log.Println("Using ditherer type: " + ditherer.Type)
|
|||
|
|
|
|||
|
|
// dg := ditherer.Monochrome(img, 1.18)
|
|||
|
|
rasterConv := &raster.Converter{
|
|||
|
|
MaxWidth: 186, // == math.Round((29.0 / 80.0) * 512)) == 29mm sticker roll
|
|||
|
|
Threshold: 0.1, //pre-dithered images are black or white anyway, so this can be extremely low as there won't be any in-between colors (default: 0.5)
|
|||
|
|
}
|
|||
|
|
for i := 0; i < 2; i++ {
|
|||
|
|
rasterConv.Print(img, ep)
|
|||
|
|
ep.Cut()
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
//ep.WriteRaw([]byte{12}) // FF: in Page mode, prints all the data in the print buffer collectively and switches from Page mode to Standard mode.
|
|||
|
|
//ep.Formfeed()
|
|||
|
|
|
|||
|
|
ep.End()
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
|