89 lines
1.6 KiB
Go
89 lines
1.6 KiB
Go
package main
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import (
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"image"
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_ "image/gif"
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_ "image/jpeg"
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_ "image/png"
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"flag"
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"fmt"
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"log"
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"os"
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"janouch.name/sklad/imgutil"
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"janouch.name/sklad/ql"
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)
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var scale = flag.Int("scale", 1, "integer upscaling")
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var rotate = flag.Bool("rotate", false, "print sideways")
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func main() {
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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, "Usage: %s IMAGE\n", os.Args[0])
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flag.PrintDefaults()
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}
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flag.Parse()
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if flag.NArg() != 1 {
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flag.Usage()
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os.Exit(1)
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}
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// Open the picture.
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f, err := os.Open(flag.Arg(0))
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if err != nil {
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log.Fatalln(err)
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}
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defer f.Close()
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// Load and eventually transform the picture.
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img, _, err := image.Decode(f)
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if err != nil {
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log.Fatalln(err)
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}
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if *scale > 1 {
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img = &imgutil.Scale{Image: img, Scale: *scale}
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}
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if *rotate {
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img = &imgutil.LeftRotate{Image: img}
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}
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// Open and initialize the printer.
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p, err := ql.Open()
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if err != nil {
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log.Fatalln(err)
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}
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if p == nil {
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log.Fatalln("no suitable printer found")
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}
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if err := p.Initialize(); err != nil {
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log.Fatalln(err)
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}
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if err := p.UpdateStatus(); err != nil {
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log.Fatalln(err)
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}
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// Check the picture against the media in the printer.
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mi := ql.GetMediaInfo(
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p.LastStatus.MediaWidthMM(),
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p.LastStatus.MediaLengthMM(),
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)
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if mi == nil {
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log.Fatalln("unknown media")
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}
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bounds := img.Bounds()
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dx, dy := bounds.Dx(), bounds.Dy()
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if dx > mi.PrintAreaPins {
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log.Fatalln("the image is too wide,", dx, ">", mi.PrintAreaPins, "pt")
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}
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if dy > mi.PrintAreaLength && mi.PrintAreaLength != 0 {
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log.Fatalln("the image is too high,", dy, ">", mi.PrintAreaLength, "pt")
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}
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if err := p.Print(img); err != nil {
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log.Fatalln(err)
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}
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}
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