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-rw-r--r--label-exp/main.go216
-rw-r--r--ql/ql.go93
2 files changed, 196 insertions, 113 deletions
diff --git a/label-exp/main.go b/label-exp/main.go
index 1f15266..673ee65 100644
--- a/label-exp/main.go
+++ b/label-exp/main.go
@@ -168,11 +168,14 @@ func printStatusInformation(d []byte) {
}
// genLabelData converts an image to the printer's raster format.
-func genLabelData(src image.Image, offset int) (data []byte) {
- // TODO: Margins? For 29mm, it's 6 pins from the start, 306 printing pins.
+func genLabelData(src image.Image, offset, length int) (data []byte) {
bounds := src.Bounds()
pixels := make([]bool, 720)
for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
+ length--
+ if length <= 0 {
+ break
+ }
off := offset
for x := bounds.Max.X - 1; x >= bounds.Min.X; x-- {
// TODO: Anything to do with the ColorModel?
@@ -193,10 +196,15 @@ func genLabelData(src image.Image, offset int) (data []byte) {
data = append(data, b)
}
}
+ for ; length > 0; length-- {
+ data = append(data, 'g', 0x00, 90)
+ data = append(data, make([]byte, 90)...)
+ }
return
}
-func printLabel(src image.Image) error {
+func printLabel(printer *ql.Printer, src image.Image,
+ status *ql.Status, mediaInfo *ql.MediaInfo) error {
data := []byte(nil)
// Raster mode.
@@ -208,7 +216,17 @@ func printLabel(src image.Image) error {
// Print information command.
dy := src.Bounds().Dy()
- data = append(data, 0x1b, 0x69, 0x7a, 0x02|0x04|0x40|0x80, 0x0a, 29, 0,
+ if mediaInfo.PrintAreaLength != 0 {
+ dy = mediaInfo.PrintAreaLength
+ }
+
+ mediaType := byte(0x0a)
+ if status.MediaLengthMM != 0 {
+ mediaType = byte(0x0b)
+ }
+
+ data = append(data, 0x1b, 0x69, 0x7a, 0x02|0x04|0x40|0x80, mediaType,
+ byte(status.MediaWidthMM), byte(status.MediaLengthMM),
byte(dy), byte(dy>>8), byte(dy>>16), byte(dy>>24), 0, 0x00)
// Auto cut, each 1 label.
@@ -219,41 +237,26 @@ func printLabel(src image.Image) error {
// Not sure what it means, doesn't seem to have any effect to turn it off.
data = append(data, 0x1b, 0x69, 0x4b, 0x08)
- // 3mm margins along the direction of feed. 0x23 = 35 dots, the minimum.
- data = append(data, 0x1b, 0x69, 0x64, 0x23, 0x00)
+ if status.MediaLengthMM != 0 {
+ // 3mm margins along the direction of feed. 0x23 = 35 dots, the minimum.
+ data = append(data, 0x1b, 0x69, 0x64, 0x23, 0x00)
+ } else {
+ // May not set anything other than zero.
+ data = append(data, 0x1b, 0x69, 0x64, 0x00, 0x00)
+ }
// Compression mode: no compression.
// Should be the only supported mode for QL-800.
data = append(data, 0x4d, 0x00)
// The graphics data itself.
- data = append(data, genLabelData(src, 6)...)
+ data = append(data, genLabelData(src, mediaInfo.SideMarginPins, dy)...)
// Print command with feeding.
data = append(data, 0x1a)
// ---
- printer, err := ql.Open()
- if err != nil {
- return err
- }
- if printer == nil {
- return errors.New("no suitable printer found")
- }
- defer printer.Close()
-
- if err := printer.Initialize(); err != nil {
- return err
- }
-
- status, err := printer.GetStatus()
- if err != nil {
- return err
- }
-
- printStatusInformation(status)
-
// Print the prepared data.
if _, err := printer.File.Write(data); err != nil {
return err
@@ -263,19 +266,19 @@ func printLabel(src image.Image) error {
// state, and try to figure out something from the statuses.
// We may also receive an error status instead of the transition to
// the printing state. Or even after it.
- start := time.Now()
+ start, b := time.Now(), make([]byte, 32)
for {
if time.Now().Sub(start) > 3*time.Second {
break
}
- if n, err := printer.File.Read(status); err == io.EOF {
+ if n, err := printer.File.Read(b); err == io.EOF {
time.Sleep(100 * time.Millisecond)
} else if err != nil {
return err
} else if n < 32 {
return errors.New("invalid read")
} else {
- printStatusInformation(status)
+ printStatusInformation(b)
}
}
return nil
@@ -285,47 +288,14 @@ func printLabel(src image.Image) error {
var font *bdf.Font
-func genLabel(text string, width int) image.Image {
- // Create a scaled bitmap of the QR code.
- qrImg, _ := qr.Encode(text, qr.H, qr.Auto)
- qrImg, _ = barcode.Scale(qrImg, width, width)
- qrRect := qrImg.Bounds()
-
- // Create a scaled bitmap of the text label.
- textRect, _ := font.BoundString(text)
- textImg := image.NewRGBA(textRect)
- draw.Draw(textImg, textRect, image.White, image.ZP, draw.Src)
- font.DrawString(textImg, image.ZP, text)
-
- // TODO: We can scale as needed to make the text fit.
- scaledTextImg := scaler{image: textImg, scale: 3}
- scaledTextRect := scaledTextImg.Bounds()
-
- // Combine.
- combinedRect := qrRect
- combinedRect.Max.Y += scaledTextRect.Dy() + 20
-
- combinedImg := image.NewRGBA(combinedRect)
- draw.Draw(combinedImg, combinedRect, image.White, image.ZP, draw.Src)
- draw.Draw(combinedImg, combinedRect, qrImg, image.ZP, draw.Src)
-
- target := image.Rect(
- (width-scaledTextRect.Dx())/2, qrRect.Dy()+10,
- combinedRect.Max.X, combinedRect.Max.Y)
- draw.Draw(combinedImg, target, &scaledTextImg, scaledTextRect.Min, draw.Src)
- return combinedImg
-}
-
-func genLabelForHeight(text string, height int) image.Image {
+func genLabelForHeight(text string, height, scale int) image.Image {
// Create a scaled bitmap of the text label.
textRect, _ := font.BoundString(text)
textImg := image.NewRGBA(textRect)
draw.Draw(textImg, textRect, image.White, image.ZP, draw.Src)
font.DrawString(textImg, image.ZP, text)
- // TODO: Make it possible to choose scale, or use some heuristic.
- scaledTextImg := scaler{image: textImg, scale: 3}
- //scaledTextImg := scaler{image: textImg, scale: 3}
+ scaledTextImg := scaler{image: textImg, scale: scale}
scaledTextRect := scaledTextImg.Bounds()
remains := height - scaledTextRect.Dy() - 20
@@ -358,16 +328,48 @@ func genLabelForHeight(text string, height int) image.Image {
var tmpl = template.Must(template.New("form").Parse(`
<!DOCTYPE html>
<html><body>
+ <h1>PT-CBP label printing tool</h1>
<table><tr>
<td valign=top>
- <img border=1 src='?img&amp;width={{.Width}}&amp;text={{.Text}}'>
+ <img border=1 src='?img&amp;scale={{.Scale}}&amp;text={{.Text}}'>
</td>
<td valign=top>
+ <fieldset>
+ {{ if .Printer }}
+
+ <p>Printer: {{ .Printer.Manufacturer }} {{ .Printer.Model }}
+ <p>Tape:
+ {{ if .Status }}
+ {{ .Status.MediaWidthMM }} mm &times;
+ {{ .Status.MediaLengthMM }} mm
+
+ {{ if .MediaInfo }}
+ (offset: {{ .MediaInfo.SideMarginPins }} pt,
+ print area: {{ .MediaInfo.PrintAreaPins }} pt)
+ {{ else }}
+ (unknown media)
+ {{ end }}
+
+ {{ if .Status.Errors }}
+ {{ range .Status.Errors }}
+ <p>Error: {{ . }}
+ {{ end }}
+ {{ end }}
+
+ {{ end }}
+ {{ if .InitErr }}
+ {{ .InitErr }}
+ {{ end }}
+
+ {{ else }}
+ <p>Error: {{ .PrinterErr }}
+ {{ end }}
+ </fieldset>
<form><fieldset>
- <p><label for=width>Tape width in pt:</label>
- <input id=width name=width value='{{.Width}}'>
<p><label for=text>Text:</label>
<input id=text name=text value='{{.Text}}'>
+ <label for=scale>Scale:</label>
+ <input id=scale name=scale value='{{.Scale}}' size=1>
<p><input type=submit value='Update'>
<input type=submit name=print value='Update and Print'>
</fieldset></form>
@@ -376,31 +378,82 @@ var tmpl = template.Must(template.New("form").Parse(`
</body></html>
`))
+func getPrinter() (*ql.Printer, error) {
+ printer, err := ql.Open()
+ if err != nil {
+ return nil, err
+ }
+ if printer == nil {
+ return nil, errors.New("no suitable printer found")
+ }
+ return printer, nil
+}
+
+func getStatus(printer *ql.Printer) (*ql.Status, error) {
+ if err := printer.Initialize(); err != nil {
+ return nil, err
+ }
+ if data, err := printer.GetStatus(); err != nil {
+ return nil, err
+ } else {
+ printStatusInformation(data)
+ return ql.DecodeStatus(data), nil
+ }
+}
+
func handle(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
http.Error(w, err.Error(), 500)
return
}
+ var (
+ status *ql.Status
+ initErr error
+ )
+ printer, printerErr := getPrinter()
+ if printerErr == nil {
+ defer printer.Close()
+ status, initErr = getStatus(printer)
+ }
+
+ var mediaInfo *ql.MediaInfo
+ if status != nil {
+ mediaInfo = ql.GetMediaInfo(status.MediaWidthMM, status.MediaLengthMM)
+ }
+
var params = struct {
- Width int
- Text string
+ Printer *ql.Printer
+ PrinterErr error
+ Status *ql.Status
+ InitErr error
+ MediaInfo *ql.MediaInfo
+ Text string
+ Scale int
}{
- Text: r.FormValue("text"),
+ Printer: printer,
+ PrinterErr: printerErr,
+ Status: status,
+ InitErr: initErr,
+ MediaInfo: mediaInfo,
+ Text: r.FormValue("text"),
}
var err error
- params.Width, err = strconv.Atoi(r.FormValue("width"))
+ params.Scale, err = strconv.Atoi(r.FormValue("scale"))
if err != nil {
- params.Width = 306 // Default to 29mm tape.
+ params.Scale = 3
}
- // TODO: Possibly just remove the for-width mode.
- label := genLabel(params.Text, params.Width)
- label = &leftRotate{image: genLabelForHeight(params.Text, params.Width)}
- if r.FormValue("print") != "" {
- if err := printLabel(label); err != nil {
- log.Println("print error:", err)
+ var label image.Image
+ if mediaInfo != nil {
+ label = &leftRotate{image: genLabelForHeight(
+ params.Text, mediaInfo.PrintAreaPins, params.Scale)}
+ if r.FormValue("print") != "" {
+ if err := printLabel(
+ printer, label, status, mediaInfo); err != nil {
+ log.Println("print error:", err)
+ }
}
}
@@ -410,6 +463,11 @@ func handle(w http.ResponseWriter, r *http.Request) {
return
}
+ if mediaInfo == nil {
+ http.Error(w, "unknown media", 500)
+ return
+ }
+
w.Header().Set("Content-Type", "image/png")
if err := png.Encode(w, label); err != nil {
http.Error(w, err.Error(), 500)
diff --git a/ql/ql.go b/ql/ql.go
index 0d71551..bf532cb 100644
--- a/ql/ql.go
+++ b/ql/ql.go
@@ -5,6 +5,7 @@ package ql
// http://etc.nkadesign.com/Printers/QL550LabelPrinterProtocol
// https://github.com/torvalds/linux/blob/master/drivers/usb/class/usblp.c
// http://www.undocprint.org/formats/page_description_languages/brother_p-touch
+// http://www.undocprint.org/formats/communication_protocols/ieee_1284
import (
"errors"
@@ -61,8 +62,6 @@ type deviceID map[string][]string
// parseIEEE1284DeviceID leniently parses an IEEE 1284 Device ID string
// and returns a map containing a slice of values for each key.
-//
-// See e.g. http://www.undocprint.org/formats/communication_protocols/ieee_1284
func parseIEEE1284DeviceID(id []byte) deviceID {
m := make(deviceID)
for _, kv := range deviceIDRegexp.FindAllStringSubmatch(string(id), -1) {
@@ -85,10 +84,19 @@ func (id deviceID) Find(key, abbreviation string) []string {
return nil
}
+func (id deviceID) FindFirst(key, abbreviation string) string {
+ for _, s := range id.Find(key, abbreviation) {
+ return s
+ }
+ return ""
+}
+
// -----------------------------------------------------------------------------
type Printer struct {
- File *os.File
+ File *os.File
+ Manufacturer string
+ Model string
}
func compatible(id deviceID) bool {
@@ -119,12 +127,17 @@ func Open() (*Printer, error) {
f.Close()
continue
}
+ parsedID := parseIEEE1284DeviceID(deviceID)
// Filter out printers that wouldn't understand the protocol.
- if !compatible(parseIEEE1284DeviceID(deviceID)) {
+ if !compatible(parsedID) {
f.Close()
continue
}
- return &Printer{File: f}, nil
+ return &Printer{
+ File: f,
+ Manufacturer: parsedID.FindFirst("MANUFACTURER", "MFG"),
+ Model: parsedID.FindFirst("MODEL", "MDL"),
+ }, nil
}
return nil, nil
}
@@ -194,52 +207,61 @@ func (p *Printer) Close() error {
type mediaSize struct {
WidthMM int
- HeightMM int
+ LengthMM int
}
-type mediaInfo struct {
- // Note that these are approximates, many pins within the margins will work
+type MediaInfo struct {
+ // Note that these are approximates, many pins within the margins will work.
SideMarginPins int
PrintAreaPins int
+ // If non-zero, length of the die-cut label print area in 300dpi pins.
+ PrintAreaLength int
}
-var media = map[mediaSize]mediaInfo{
+var media = map[mediaSize]MediaInfo{
// Continuous length tape
- {12, 0}: {29, 106},
- {29, 0}: {6, 306},
- {38, 0}: {12, 413},
- {50, 0}: {12, 554},
- {54, 0}: {0, 590},
- {62, 0}: {12, 696},
+ {12, 0}: {29, 106, 0},
+ {29, 0}: {6, 306, 0},
+ {38, 0}: {12, 413, 0},
+ {50, 0}: {12, 554, 0},
+ {54, 0}: {0, 590, 0},
+ {62, 0}: {12, 696, 0},
// Die-cut labels
- {17, 54}: {0, 165},
- {17, 87}: {0, 165},
- {23, 23}: {42, 236},
- {29, 42}: {6, 306},
- {29, 90}: {6, 306},
- {38, 90}: {12, 413},
- {39, 48}: {6, 425},
- {52, 29}: {0, 578},
- {54, 29}: {59, 602},
- {60, 86}: {24, 672},
- {62, 29}: {12, 696},
- {62, 100}: {12, 696},
+ {17, 54}: {0, 165, 566},
+ {17, 87}: {0, 165, 956},
+ {23, 23}: {42, 236, 202},
+ {29, 42}: {6, 306, 425},
+ {29, 90}: {6, 306, 991},
+ {38, 90}: {12, 413, 991},
+ {39, 48}: {6, 425, 495},
+ {52, 29}: {0, 578, 271},
+ {54, 29}: {59, 602, 271},
+ {60, 86}: {24, 672, 954},
+ {62, 29}: {12, 696, 271},
+ {62, 100}: {12, 696, 1109},
// Die-cut diameter labels
- {12, 12}: {113, 94},
- {24, 24}: {42, 236},
- {58, 58}: {51, 618},
+ {12, 12}: {113, 94, 94},
+ {24, 24}: {42, 236, 236},
+ {58, 58}: {51, 618, 618},
+}
+
+func GetMediaInfo(widthMM, lengthMM int) *MediaInfo {
+ if mi, ok := media[mediaSize{widthMM, lengthMM}]; ok {
+ return &mi
+ }
+ return nil
}
+// -----------------------------------------------------------------------------
+
type Status struct {
MediaWidthMM int
MediaLengthMM int
Errors []string
}
-// -----------------------------------------------------------------------------
-
func decodeBitfieldErrors(b byte, errors [8]string) []string {
var result []string
for i := uint(0); i < 8; i++ {
@@ -251,8 +273,11 @@ func decodeBitfieldErrors(b byte, errors [8]string) []string {
}
// TODO: What exactly do we need? Probably extend as needed.
-func decodeStatusInformation(d []byte) Status {
+func DecodeStatus(d []byte) *Status {
var status Status
+ status.MediaWidthMM = int(d[10])
+ status.MediaLengthMM = int(d[17])
+
status.Errors = append(status.Errors, decodeBitfieldErrors(d[8], [8]string{
"no media", "end of media", "cutter jam", "?", "printer in use",
"printer turned off", "high-voltage adapter", "fan motor error"})...)
@@ -260,5 +285,5 @@ func decodeStatusInformation(d []byte) Status {
"replace media", "expansion buffer full", "communication error",
"communication buffer full", "cover open", "cancel key",
"media cannot be fed", "system error"})...)
- return status
+ return &status
}
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-21 13:48:41 +0000