add support for depth in barcode generations

- Introduced depth parameter to EncodeWithDepth function to allow generating barcodes with specified color depth.
- Updated Encode function to use EncodeWithDepth with a default depth of 16.

aztec/azteccode.go

@@ -13,10 +13,11 @@ type aztecCode struct {
 	*utils.BitList
 	size    int
 	content []byte
+	depth int
 }
 
-func newAztecCode(size int) *aztecCode {
+func newAztecCode(size int, depth int) *aztecCode {
-	return &aztecCode{utils.NewBitList(size * size), size, nil}
+	return &aztecCode{utils.NewBitList(size * size), size, nil, 16}
 }
 
 func (c *aztecCode) Content() string {
@@ -28,7 +29,7 @@ func (c *aztecCode) Metadata() barcode.Metadata {
 }
 
 func (c *aztecCode) ColorModel() color.Model {
-	return color.Gray16Model
+	return utils.ColorModel(c.depth)
 }
 
 func (c *aztecCode) Bounds() image.Rectangle {
@@ -37,9 +38,9 @@ func (c *aztecCode) Bounds() image.Rectangle {
 
 func (c *aztecCode) At(x, y int) color.Color {
 	if c.GetBit(x*c.size + y) {
-		return color.Black
+		return utils.BlackColor(c.depth)
 	}
-	return color.White
+	return utils.WhiteColor(c.depth)
 }
 
 func (c *aztecCode) set(x, y int) {

aztec/encoder.go

@@ -123,7 +123,12 @@ func drawBullsEye(matrix *aztecCode, center, size int) {
 }
 
 // Encode returns an aztec barcode with the given content
-func Encode(data []byte, minECCPercent int, userSpecifiedLayers int) (barcode.Barcode, error) {
+func Encode(data []byte, minECCPercent int, userSpecifiedLayers int) (barcode.Barcode, error){
+	return EncodeWithDepth(data, minECCPercent, userSpecifiedLayers, 16)
+}
+
+// Encode returns an aztec barcode with the given content
+func EncodeWithDepth(data []byte, minECCPercent int, userSpecifiedLayers int, depth int) (barcode.Barcode, error) {
 	bits := highlevelEncode(data)
 	eccBits := ((bits.Len() * minECCPercent) / 100) + 11
 	totalSizeBits := bits.Len() + eccBits
@@ -215,7 +220,7 @@ func Encode(data []byte, minECCPercent int, userSpecifiedLayers int) (barcode.Ba
 			alignmentMap[origCenter+i] = center + newOffset + 1
 		}
 	}
-	code := newAztecCode(matrixSize)
+	code := newAztecCode(matrixSize, depth)
 	code.content = data
 
 	// draw data bits

codabar/encoder.go

@@ -33,7 +33,7 @@ var encodingTable = map[rune][]bool{
 }
 
 // Encode creates a codabar barcode for the given content
-func Encode(content string) (barcode.Barcode, error) {
+func EncodeWithDepth(content string, depth int) (barcode.Barcode, error) {
 	checkValid, _ := regexp.Compile(`[ABCD][0123456789\-\$\:/\.\+]*[ABCD]$`)
 	if content == "!" || checkValid.ReplaceAllString(content, "!") != "!" {
 		return nil, fmt.Errorf("can not encode \"%s\"", content)
@@ -45,5 +45,10 @@ func Encode(content string) (barcode.Barcode, error) {
 		}
 		resBits.AddBit(encodingTable[r]...)
 	}
-	return utils.New1DCode(barcode.TypeCodabar, content, resBits), nil
+	return utils.New1DCodeWithDepth(barcode.TypeCodabar, content, resBits, depth), nil
+}
+
+// Encode creates a codabar barcode for the given content
+func Encode(content string) (barcode.Barcode, error) {
+	return EncodeWithDepth(content, 16)
 }

code128/encode.go

@@ -156,7 +156,7 @@ func getCodeIndexList(content []rune) *utils.BitList {
 }
 
 // Encode creates a Code 128 barcode for the given content
-func Encode(content string) (barcode.BarcodeIntCS, error) {
+func EncodeWithDepth(content string, depth int) (barcode.BarcodeIntCS, error) {
 	contentRunes := strToRunes(content)
 	if len(contentRunes) <= 0 || len(contentRunes) > 80 {
 		return nil, fmt.Errorf("content length should be between 1 and 80 runes but got %d", len(contentRunes))
@@ -180,7 +180,12 @@ func Encode(content string) (barcode.BarcodeIntCS, error) {
 	sum = sum % 103
 	result.AddBit(encodingTable[sum]...)
 	result.AddBit(encodingTable[stopSymbol]...)
-	return utils.New1DCodeIntCheckSum(barcode.TypeCode128, content, result, sum), nil
+	return utils.New1DCodeIntCheckSumWithDepth(barcode.TypeCode128, content, result, sum, depth), nil
+}
+
+// Encode creates a Code 128 barcode for the given content
+func Encode(content string) (barcode.BarcodeIntCS, error) {
+	return EncodeWithDepth(content, 16)
 }
 
 func EncodeWithoutChecksum(content string) (barcode.Barcode, error) {

code39/encoder.go

@@ -113,7 +113,7 @@ func prepare(content string) (string, error) {
 
 // Encode returns a code39 barcode for the given content
 // if includeChecksum is set to true, a checksum character is calculated and added to the content
-func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.BarcodeIntCS, error) {
+func EncodeWithDepth(content string, includeChecksum bool, fullASCIIMode bool, depth int) (barcode.BarcodeIntCS, error) {
 	if fullASCIIMode {
 		var err error
 		content, err = prepare(content)
@@ -148,5 +148,11 @@ func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.B
 	if err != nil {
 		checkSum = 0
 	}
-	return utils.New1DCodeIntCheckSum(barcode.TypeCode39, content, result, int(checkSum)), nil
+	return utils.New1DCodeIntCheckSumWithDepth(barcode.TypeCode39, content, result, int(checkSum), depth), nil
+}
+
+// Encode returns a code39 barcode for the given content
+// if includeChecksum is set to true, a checksum character is calculated and added to the content
+func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.BarcodeIntCS, error) {
+	return EncodeWithDepth(content, includeChecksum, fullASCIIMode, 16)
 }

code93/encoder.go

@@ -74,9 +74,7 @@ func prepare(content string) (string, error) {
 	return result, nil
 }
 
-// Encode returns a code93 barcode for the given content
+func EncodeWithDepth(content string, includeChecksum bool, fullASCIIMode bool, depth int) (barcode.Barcode, error) {
-// if includeChecksum is set to true, two checksum characters are calculated and added to the content
-func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.Barcode, error) {
 	if fullASCIIMode {
 		var err error
 		content, err = prepare(content)
@@ -104,7 +102,13 @@ func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.B
 	}
 	result.AddBit(true)
 
-	return utils.New1DCode(barcode.TypeCode93, content, result), nil
+	return utils.New1DCodeWithDepth(barcode.TypeCode93, content, result, depth), nil
+}
+
+// Encode returns a code93 barcode for the given content
+// if includeChecksum is set to true, two checksum characters are calculated and added to the content
+func Encode(content string, includeChecksum bool, fullASCIIMode bool) (barcode.Barcode, error) {
+	return EncodeWithDepth(content, includeChecksum, fullASCIIMode, 16)
 }
 
 func getChecksum(content string, maxWeight int) rune {

datamatrix/codelayout.go

@@ -11,13 +11,15 @@ type codeLayout struct {
 	matrix *utils.BitList
 	occupy *utils.BitList
 	size   *dmCodeSize
+	depth int
 }
 
-func newCodeLayout(size *dmCodeSize) *codeLayout {
+func newCodeLayout(size *dmCodeSize, depth int) *codeLayout {
 	result := new(codeLayout)
 	result.matrix = utils.NewBitList(size.MatrixColumns() * size.MatrixRows())
 	result.occupy = utils.NewBitList(size.MatrixColumns() * size.MatrixRows())
 	result.size = size
+	result.depth = depth
 	return result
 }
 
@@ -159,7 +161,7 @@ func (l *codeLayout) SetValues(data []byte) {
 }
 
 func (l *codeLayout) Merge() *datamatrixCode {
-	result := newDataMatrixCode(l.size)
+	result := newDataMatrixCodeWithDepth(l.size, l.depth)
 
 	//dotted horizontal lines
 	for r := 0; r < l.size.Rows; r += (l.size.RegionRows() + 2) {

datamatrix/datamatrixcode.go

@@ -12,10 +12,15 @@ type datamatrixCode struct {
 	*utils.BitList
 	*dmCodeSize
 	content string
+	depth   int
+}
+
+func newDataMatrixCodeWithDepth(size *dmCodeSize, depth int) *datamatrixCode {
+	return &datamatrixCode{utils.NewBitList(size.Rows * size.Columns), size, "", depth}
 }
 
 func newDataMatrixCode(size *dmCodeSize) *datamatrixCode {
-	return &datamatrixCode{utils.NewBitList(size.Rows * size.Columns), size, ""}
+	return &datamatrixCode{utils.NewBitList(size.Rows * size.Columns), size, "", 16}
 }
 
 func (c *datamatrixCode) Content() string {
@@ -27,7 +32,7 @@ func (c *datamatrixCode) Metadata() barcode.Metadata {
 }
 
 func (c *datamatrixCode) ColorModel() color.Model {
-	return color.Gray16Model
+	return utils.ColorModel(c.depth)
 }
 
 func (c *datamatrixCode) Bounds() image.Rectangle {
@@ -36,9 +41,9 @@ func (c *datamatrixCode) Bounds() image.Rectangle {
 
 func (c *datamatrixCode) At(x, y int) color.Color {
 	if c.get(x, y) {
-		return color.Black
+		return utils.BlackColor(c.depth)
 	}
-	return color.White
+	return utils.WhiteColor(c.depth)
 }
 
 func (c *datamatrixCode) get(x, y int) bool {

datamatrix/encoder.go

@@ -8,7 +8,7 @@ import (
 )
 
 // Encode returns a Datamatrix barcode for the given content
-func Encode(content string) (barcode.Barcode, error) {
+func EncodeWithDepth(content string, depth int) (barcode.Barcode, error) {
 	data := encodeText(content)
 
 	var size *dmCodeSize
@@ -23,7 +23,7 @@ func Encode(content string) (barcode.Barcode, error) {
 	}
 	data = addPadding(data, size.DataCodewords())
 	data = ec.calcECC(data, size)
-	code := render(data, size)
+	code := render(data, size, depth)
 	if code != nil {
 		code.content = content
 		return code, nil
@@ -31,8 +31,13 @@ func Encode(content string) (barcode.Barcode, error) {
 	return nil, errors.New("unable to render barcode")
 }
 
-func render(data []byte, size *dmCodeSize) *datamatrixCode {
+// Encode returns a Datamatrix barcode for the given content
-	cl := newCodeLayout(size)
+func Encode(content string) (barcode.Barcode, error) {
+	return EncodeWithDepth(content, 16)
+}
+
+func render(data []byte, size *dmCodeSize, depth int) *datamatrixCode {
+	cl := newCodeLayout(size, depth)
 
 	cl.SetValues(data)
 

ean/encoder.go

@@ -158,7 +158,7 @@ func encodeEAN13(code string) *utils.BitList {
 }
 
 // Encode returns a EAN 8 or EAN 13 barcode for the given code
-func Encode(code string) (barcode.BarcodeIntCS, error) {
+func EncodeWithDepth(code string, depth int) (barcode.BarcodeIntCS, error) {
 	var checkSum int
 	if len(code) == 7 || len(code) == 12 {
 		code += string(calcCheckNum(code))
@@ -175,13 +175,18 @@ func Encode(code string) (barcode.BarcodeIntCS, error) {
 	if len(code) == 8 {
 		result := encodeEAN8(code)
 		if result != nil {
-			return utils.New1DCodeIntCheckSum(barcode.TypeEAN8, code, result, checkSum), nil
+			return utils.New1DCodeIntCheckSumWithDepth(barcode.TypeEAN8, code, result, checkSum, depth), nil
 		}
 	} else if len(code) == 13 {
 		result := encodeEAN13(code)
 		if result != nil {
-			return utils.New1DCodeIntCheckSum(barcode.TypeEAN13, code, result, checkSum), nil
+			return utils.New1DCodeIntCheckSumWithDepth(barcode.TypeEAN13, code, result, checkSum, depth), nil
 		}
 	}
 	return nil, errors.New("invalid ean code data")
 }
+
+// Encode returns a EAN 8 or EAN 13 barcode for the given code
+func Encode(code string) (barcode.BarcodeIntCS, error) {
+	return EncodeWithDepth(code, 16)
+}

pdf417/encoder.go

@@ -15,7 +15,7 @@ const (
 // Encodes the given data as PDF417 barcode.
 // securityLevel should be between 0 and 8. The higher the number, the more
 // additional error-correction codes are added.
-func Encode(data string, securityLevel byte) (barcode.Barcode, error) {
+func EncodeWithDepth(data string, securityLevel byte, depth int) (barcode.Barcode, error) {
 	if securityLevel >= 9 {
 		return nil, fmt.Errorf("Invalid security level %d", securityLevel)
 	}
@@ -34,6 +34,7 @@ func Encode(data string, securityLevel byte) (barcode.Barcode, error) {
 
 	barcode := new(pdfBarcode)
 	barcode.data = data
+	barcode.depth = depth
 
 	codeWords, err := encodeData(dataWords, columns, sl)
 	if err != nil {
@@ -70,6 +71,13 @@ func Encode(data string, securityLevel byte) (barcode.Barcode, error) {
 	return barcode, nil
 }
 
+// Encodes the given data as PDF417 barcode.
+// securityLevel should be between 0 and 8. The higher the number, the more
+// additional error-correction codes are added.
+func Encode(data string, securityLevel byte) (barcode.Barcode, error) {
+	return EncodeWithDepth(data, securityLevel, 16)
+}
+
 func encodeData(dataWords []int, columns int, sl securitylevel) ([]int, error) {
 	dataCount := len(dataWords)
 

pdf417/pdfcode.go

@@ -12,6 +12,7 @@ type pdfBarcode struct {
 	data  string
 	width int
 	code  *utils.BitList
+	depth int
 }
 
 func (c *pdfBarcode) Metadata() barcode.Metadata {
@@ -23,7 +24,7 @@ func (c *pdfBarcode) Content() string {
 }
 
 func (c *pdfBarcode) ColorModel() color.Model {
-	return color.Gray16Model
+	return utils.ColorModel(c.depth)
 }
 
 func (c *pdfBarcode) Bounds() image.Rectangle {
@@ -34,7 +35,7 @@ func (c *pdfBarcode) Bounds() image.Rectangle {
 
 func (c *pdfBarcode) At(x, y int) color.Color {
 	if c.code.GetBit((y/moduleHeight)*c.width + x) {
-		return color.Black
+		return utils.BlackColor(c.depth)
 	}
-	return color.White
+	return utils.WhiteColor(c.depth)
 }

qr/encoder.go

@@ -55,7 +55,7 @@ func (e Encoding) String() string {
 }
 
 // Encode returns a QR barcode with the given content, error correction level and uses the given encoding
-func Encode(content string, level ErrorCorrectionLevel, mode Encoding) (barcode.Barcode, error) {
+func EncodeWithDepth(content string, level ErrorCorrectionLevel, mode Encoding, depth int) (barcode.Barcode, error) {
 	bits, vi, err := mode.getEncoder()(content, level)
 	if err != nil {
 		return nil, err
@@ -63,19 +63,23 @@ func Encode(content string, level ErrorCorrectionLevel, mode Encoding) (barcode.
 
 	blocks := splitToBlocks(bits.IterateBytes(), vi)
 	data := blocks.interleave(vi)
-	result := render(data, vi)
+	result := render(data, vi, depth)
 	result.content = content
 	return result, nil
 }
 
-func render(data []byte, vi *versionInfo) *qrcode {
+func Encode(content string, level ErrorCorrectionLevel, mode Encoding) (barcode.Barcode, error) {
+	return EncodeWithDepth(content, level, mode, 16)
+}
+
+func render(data []byte, vi *versionInfo, depth int) *qrcode {
 	dim := vi.modulWidth()
 	results := make([]*qrcode, 8)
 	for i := 0; i < 8; i++ {
-		results[i] = newBarcode(dim)
+		results[i] = newBarCodeWithDepth(dim, depth)
 	}
 
-	occupied := newBarcode(dim)
+	occupied := newBarCodeWithDepth(dim, depth)
 
 	setAll := func(x int, y int, val bool) {
 		occupied.Set(x, y, true)

qr/qrcode.go

@@ -13,6 +13,7 @@ type qrcode struct {
 	dimension int
 	data      *utils.BitList
 	content   string
+	depth     int
 }
 
 func (qr *qrcode) Content() string {
@@ -24,7 +25,7 @@ func (qr *qrcode) Metadata() barcode.Metadata {
 }
 
 func (qr *qrcode) ColorModel() color.Model {
-	return color.Gray16Model
+	return utils.ColorModel(qr.depth)
 }
 
 func (qr *qrcode) Bounds() image.Rectangle {
@@ -33,9 +34,9 @@ func (qr *qrcode) Bounds() image.Rectangle {
 
 func (qr *qrcode) At(x, y int) color.Color {
 	if qr.Get(x, y) {
-		return color.Black
+		return utils.BlackColor(qr.depth)
 	}
-	return color.White
+	return utils.WhiteColor(qr.depth)
 }
 
 func (qr *qrcode) Get(x, y int) bool {
@@ -158,9 +159,14 @@ func (qr *qrcode) calcPenaltyRule4() uint {
 	return uint(math.Min(floor, ceil) * 10)
 }
 
-func newBarcode(dim int) *qrcode {
+func newBarCodeWithDepth(dim int, depth int) *qrcode {
 	res := new(qrcode)
 	res.dimension = dim
 	res.data = utils.NewBitList(dim * dim)
+	res.depth = depth
 	return res
 }
+
+func newBarcode(dim int) *qrcode {
+	return newBarCodeWithDepth(dim, 16)
+}

twooffive/encoder.go

@@ -78,8 +78,8 @@ func AddCheckSum(content string) (string, error) {
 	return content + string(utils.IntToRune(sum%10)), nil
 }
 
-// Encode creates a codabar barcode for the given content
+// Encode creates a codabar barcode for the given content and depth
-func Encode(content string, interleaved bool) (barcode.Barcode, error) {
+func EncodeWithDepth(content string, interleaved bool, depth int) (barcode.Barcode, error) {
 	if content == "" {
 		return nil, errors.New("content is empty")
 	}
@@ -131,8 +131,13 @@ func Encode(content string, interleaved bool) (barcode.Barcode, error) {
 	resBits.AddBit(mode.end...)
 
 	if interleaved {
-		return utils.New1DCode(barcode.Type2of5Interleaved, content, resBits), nil
+		return utils.New1DCodeWithDepth(barcode.Type2of5Interleaved, content, resBits, depth), nil
 	} else {
-		return utils.New1DCode(barcode.Type2of5, content, resBits), nil
+		return utils.New1DCodeWithDepth(barcode.Type2of5, content, resBits, depth), nil
 	}
 }
+
+// Encode creates a codabar barcode for the given content
+func Encode(content string, interleaved bool) (barcode.Barcode, error) {
+	return EncodeWithDepth(content, interleaved, 16)
+}