internal static float GetPercentToCut(float height, MeasureBarcodeUnit heightToCut, int scaleMultiplier)
{
switch (heightToCut.Type)
{
case MeasureBarcodeType.Percent:
{
if (heightToCut.Value > 99)
{
throw new InvalidOperationException("Cannot cut more than 99% of height.");
}
return(heightToCut.Value);
}
case MeasureBarcodeType.Pixel:
{
float percent = GetPercent(height, heightToCut.Value * scaleMultiplier);
if (percent > 99)
{
throw new InvalidOperationException("Cannot cut more than 99% of height.");
}
return(percent);
}
default:
throw new InvalidOperationException("Parameter cutHeight must be of type Pixel or Percent.");
}
}
/// <summary>
/// Renders a GS1-128 barcode on bitmap from the encoded data.
/// </summary>
/// <param name="encodedData">The encoded data.</param>
/// <param name="textDataString">The text to be printed under the barcode lines.</param>
/// <param name="heightToCut">The height in pixels or in percent to be cut from the top of the barcode lines. Can be 0.</param>
/// <param name="showDataLabel">Defines whether to print the barcode data under the lines.</param>
/// <param name="scaleMultiplier">The multiplier of the barcode width for better text rendering.</param>
/// <param name="backColor">The background color.</param>
/// <param name="hasQuietZones">Defines whether the barcode has quiet zones.</param>
/// <param name="strokeColor">The color of barcode lines.</param>
/// <param name="barcodeRotation">Defines barcode rotation angle.</param>
/// <returns></returns>
internal static byte[] GetBarcodeImageGS1_128(byte[] encodedData, string textDataString,
MeasureBarcodeUnit heightToCut, bool showDataLabel = true, int scaleMultiplier = 2,
Color?strokeColor = null, Color?backColor = null, bool hasQuietZones = true, BarcodeRotation barcodeRotation = BarcodeRotation.Clockwise_0)
{
// Draw barcode on bitmap:
Bitmap bitmap = DrawBitmapGS1_128(encodedData, textDataString, heightToCut, showDataLabel, scaleMultiplier, strokeColor, backColor, hasQuietZones, barcodeRotation);
// Save bitmap to a byte array:
using (var memStream = new MemoryStream())
{
bitmap.Save(memStream, ImageFormat.Png);
return(memStream.ToArray());
}
}
internal static float GetPixels(float from, MeasureBarcodeUnit howMuch)
{
switch (howMuch.Type)
{
case MeasureBarcodeType.Percent:
return(from * howMuch.Value / 100);
case MeasureBarcodeType.Pixel:
return(howMuch.Value);
default:
throw new System.InvalidOperationException("Parameter cutHeight must be of type Pixel or Percent");
}
}
public void Test_MeasureBarcodeUnit(MeasureBarcodeType heightType, float heightValue, string caseName)
{
MeasureBarcodeUnit height = new MeasureBarcodeUnit(0);
if (heightType == MeasureBarcodeType.Percent)
{
height = MeasureBarcodeUnit.FromPercent(heightValue);
}
else if (heightType == MeasureBarcodeType.Pixel)
{
height = MeasureBarcodeUnit.FromPixel(heightValue);
}
height.Type.Should().Be(heightType);
height.Value.Should().Be(heightValue);
}
internal static void ValidateInputParameters(MeasureBarcodeUnit heightToCut, int scaleMultiplier)
{
if ((heightToCut.Type == MeasureBarcodeType.Percent) && (heightToCut.Value > 99))
{
throw new System.InvalidOperationException("Cannot cut more than 99% of barcode height.");
}
if ((heightToCut.Type == MeasureBarcodeType.Percent) && (heightToCut.Value < 0))
{
throw new System.InvalidOperationException("Height to cut cannot be negative.");
}
if (scaleMultiplier < 1)
{
throw new System.InvalidOperationException("scaleMultiplier cannot be less than 1.");
}
}
public void QuickStart_BarcodeGS128()
{
byte[] dataBarcodeGS128 = BarcodesMaker.GetBarcode("012345678912ABCD",
BarcodeType.GS1_128A,
Color.Black,
Color.White,
true,
MeasureBarcodeUnit.FromPixel(0));
using (Image image = Image.FromStream(new MemoryStream(dataBarcodeGS128)))
{
image.Save("barcodeGS128.png", System.Drawing.Imaging.ImageFormat.Png);
}
FileComparer.AreEqual("etalon_barcodeGS128.png", "barcodeGS128.png").Should().Be(true);
}
public void QuickStart_BarcodeEAN13_Colors_NoQuiteZones()
{
byte[] dataBarcode13 = BarcodesMaker.GetBarcode("0123456789123",
BarcodeType.EAN_13,
Color.Green,
Color.White,
true,
MeasureBarcodeUnit.FromPixel(0),
2,
false);
using (Image image = Image.FromStream(new MemoryStream(dataBarcode13)))
{
image.Save("barcodeEAN13_2.png", System.Drawing.Imaging.ImageFormat.Png);
}
FileComparer.AreEqual("etalon_barcodeEAN13_2.png", "barcodeEAN13_2.png").Should().Be(true);
}
public void Test_ValidationOfInputParameters(MeasureBarcodeType heightToCutType, float heightToCutValue, bool shouldFail, string because)
{
void Validate()
{
MeasureBarcodeUnit heightToCut = new MeasureBarcodeUnit(heightToCutValue, heightToCutType);
BarcodesUtils.ValidateInputParameters(heightToCut, 4);
}
if (shouldFail)
{
((Action)Validate).Should().ThrowExactly <InvalidOperationException>();
}
else
{
Validate();
}
}
/// <summary>
/// Generates a GS1-128 barcode image from the input data and returns the image as an array of bytes.
/// </summary>
/// <param name="data">The input data for the barcode.</param>
/// <param name="barcodeType">The barcode type.</param>
/// <param name="lineColor">The color of barcode lines.</param>
/// <param name="backColor">The background color.</param>
/// <param name="showDataLabel">Defines whether the input data is printed under the barcode lines.</param>
/// <param name="heightToCut">The height in pixels or in percent to be cut from the top of the barcode lines to reduce the standard height.</param>
/// <param name="scaleMultiplier">The multiplier of the barcode width for better text rendering.</param>
/// <param name="hasQuietZones">Defines whether the barcode has quiet zones.</param>
/// <param name="barcodeRotation">Defines barcode rotation angle.</param>
/// <returns>Array of bytes</returns>
internal static byte[] GetBarcodeGS1_128(string data, BarcodeType barcodeType, System.Drawing.Color lineColor, System.Drawing.Color backColor, bool showDataLabel, MeasureBarcodeUnit heightToCut, int scaleMultiplier = 2, bool hasQuietZones = true, BarcodeRotation barcodeRotation = BarcodeRotation.Clockwise_0)
{
// Process the data and encode it:
byte[] encodedData = BarcodesEncoder.EncodeBarcodeDataGS1_128(data, barcodeType);
// Create an image using encodedData and save the image to a byte array:
byte[] imgData = BarcodesRenderer.GetBarcodeImageGS1_128(encodedData, data, heightToCut, showDataLabel, scaleMultiplier, strokeColor: lineColor, backColor: backColor, hasQuietZones, barcodeRotation);
return(imgData);
}
/// <summary>
/// Generates a barcode image from the input data and returns the image as an array of bytes.
/// </summary>
/// <param name="data">The input data for the barcode.</param>
/// <param name="barcodeType">The barcode type.</param>
/// <param name="lineColor">The color of barcode lines.</param>
/// <param name="backColor">The background color.</param>
/// <param name="showDataLabel">Defines whether the input data is printed under the barcode lines.</param>
/// <param name="heightToCut">The height in pixels or in percent to be cut from the top of the barcode lines to reduce the standard height.</param>
/// <param name="scaleMultiplier">The multiplier of the barcode width for better text rendering.</param>
/// <param name="hasQuietZones">Defines whether the barcode has quiet zones.</param>
/// <param name="barcodeRotation">Defines barcode rotation angle.</param>
/// <returns>Array of bytes</returns>
public static byte[] GetBarcode(string data, BarcodeType barcodeType, System.Drawing.Color lineColor, System.Drawing.Color backColor, bool showDataLabel, MeasureBarcodeUnit heightToCut, int scaleMultiplier = 2, bool hasQuietZones = true, BarcodeRotation barcodeRotation = BarcodeRotation.Clockwise_0)
{
// Validate the data depending on barcodeType:
BarcodesUtils.ValidateBarcodeData(data, barcodeType);
// Validate the input parameters:
BarcodesUtils.ValidateInputParameters(heightToCut, scaleMultiplier);
if (barcodeType == BarcodeType.EAN_8 || barcodeType == BarcodeType.EAN_13 || barcodeType == BarcodeType.UPC_A)
{
byte[] imgData = GetBarcodeEAN_UPC(data, barcodeType, lineColor, backColor, showDataLabel, heightToCut, scaleMultiplier, hasQuietZones, barcodeRotation);
return(imgData);
}
else
{
byte[] imgData = GetBarcodeGS1_128(data, barcodeType, lineColor, backColor, showDataLabel, heightToCut, scaleMultiplier, hasQuietZones, barcodeRotation);
return(imgData);
}
}
public void Test_Renderer_GS1_128(BarcodeType type, MeasureBarcodeType heightToCutType, float heightToCutValue, int scaleMultiplier, bool hasQuiteZones, bool rotate270, string caseName)
{
MeasureBarcodeUnit heightToCut = new MeasureBarcodeUnit(heightToCutValue, heightToCutType);
float labelHeight = scaleMultiplier * 2;
int widthShould;
Font labelFont = new Font(GS1_128Data.font_family_name, GS1_128Data.default_font_size * scaleMultiplier);
labelHeight += labelFont.Size;
BarcodeRotation rotation = BarcodeRotation.Clockwise_0;
if (rotate270)
{
rotation = BarcodeRotation.Clockwise_270;
}
switch (type)
{
case BarcodeType.GS1_128A:
if (hasQuiteZones)
{
widthShould = (GS1_128Data.QuietZoneMinimumWidth * 2 + BarcodesTestData.encodedTestDataGS1_128A.Length) * scaleMultiplier;
}
else
{
widthShould = BarcodesTestData.encodedTestDataGS1_128A.Length * scaleMultiplier;
}
int heightShould = (int)(widthShould * 0.15f);
heightShould = heightShould - (int)(heightShould * BarcodesUtils.GetPercentToCut(heightShould, heightToCut, scaleMultiplier) / 100);
heightShould = heightShould + (int)labelHeight;
Bitmap bitmap = BarcodesRenderer.DrawBitmapGS1_128(
BarcodesTestData.encodedTestDataGS1_128A,
BarcodesTestData.inputTestStringGS1_128A,
heightToCut,
true, scaleMultiplier, null, null, hasQuiteZones, rotation);
if (rotate270)
{
bitmap.Width.Should().Be(heightShould);
bitmap.Height.Should().Be(widthShould);
}
else
{
bitmap.Width.Should().Be(widthShould);
bitmap.Height.Should().Be(heightShould);
}
break;
case BarcodeType.GS1_128B:
if (hasQuiteZones)
{
widthShould = (GS1_128Data.QuietZoneMinimumWidth * 2 + BarcodesTestData.encodedTestDataGS1_128B.Length) * scaleMultiplier;
}
else
{
widthShould = BarcodesTestData.encodedTestDataGS1_128B.Length * scaleMultiplier;
}
heightShould = (int)(widthShould * 0.15f);
heightShould = heightShould - (int)(heightShould * BarcodesUtils.GetPercentToCut(heightShould, heightToCut, scaleMultiplier) / 100);
heightShould = heightShould + (int)labelHeight;
bitmap = BarcodesRenderer.DrawBitmapGS1_128(
BarcodesTestData.encodedTestDataGS1_128B,
BarcodesTestData.inputTestStringGS1_128B,
heightToCut,
true, scaleMultiplier, null, null, hasQuiteZones, rotation);
if (rotate270)
{
bitmap.Width.Should().Be(heightShould);
bitmap.Height.Should().Be(widthShould);
}
else
{
bitmap.Width.Should().Be(widthShould);
bitmap.Height.Should().Be(heightShould);
}
break;
case BarcodeType.GS1_128C:
if (hasQuiteZones)
{
widthShould = (GS1_128Data.QuietZoneMinimumWidth * 2 + BarcodesTestData.encodedTestDataGS1_128C.Length) * scaleMultiplier;
}
else
{
widthShould = BarcodesTestData.encodedTestDataGS1_128C.Length * scaleMultiplier;
}
heightShould = (int)(widthShould * 0.15f);
heightShould = heightShould - (int)(heightShould * BarcodesUtils.GetPercentToCut(heightShould, heightToCut, scaleMultiplier) / 100);
heightShould = heightShould + (int)labelHeight;
bitmap = BarcodesRenderer.DrawBitmapGS1_128(
BarcodesTestData.encodedTestDataGS1_128C,
BarcodesTestData.inputTestStringGS1_128C,
heightToCut,
true, scaleMultiplier, null, null, hasQuiteZones, rotation);
if (rotate270)
{
bitmap.Width.Should().Be(heightShould);
bitmap.Height.Should().Be(widthShould);
}
else
{
bitmap.Width.Should().Be(widthShould);
bitmap.Height.Should().Be(heightShould);
}
break;
}
Assert.True(true, caseName);
}
public void Test_Renderer_EAN_UPC(BarcodeType type, MeasureBarcodeType heightToCutType, float heightToCutValue, int scaleMultiplier, bool hasQuiteZones, bool rotate90, string caseName)
{
MeasureBarcodeUnit heightToCut = new MeasureBarcodeUnit(heightToCutValue, heightToCutType);
BarcodeRotation rotation = BarcodeRotation.Clockwise_0;
if (rotate90)
{
rotation = BarcodeRotation.Clockwise_90;
}
switch (type)
{
case BarcodeType.EAN_13:
int widthShould = EANData.default_barcode_width_EAN_13 * scaleMultiplier;
int heightShould = BarcodesUtils.GetBarcodeHeightInt(widthShould, type);
heightShould = heightShould - (int)(heightShould * BarcodesUtils.GetPercentToCut(heightShould, heightToCut, scaleMultiplier) / 100);
Bitmap bitmap = BarcodesRenderer.DrawBitmapEAN_UPC(
BarcodesTestData.encodedTestDataEAN_13,
BarcodesTestData.inputTestStringEAN_13,
type, heightToCut, true, scaleMultiplier, null, null, hasQuiteZones, rotation);
if (!hasQuiteZones)
{
widthShould = widthShould - (EANData.left_quite_zone_count_EAN_13 + EANData.right_quite_zone_count) * scaleMultiplier;
}
if (rotate90)
{
bitmap.Width.Should().Be(heightShould);
bitmap.Height.Should().Be(widthShould);
}
else
{
bitmap.Width.Should().Be(widthShould);
bitmap.Height.Should().Be(heightShould);
}
break;
case BarcodeType.EAN_8:
widthShould = EANData.default_barcode_width_EAN_8 * scaleMultiplier;
heightShould = BarcodesUtils.GetBarcodeHeightInt(widthShould, type);
heightShould = heightShould - (int)(heightShould * BarcodesUtils.GetPercentToCut(heightShould, heightToCut, scaleMultiplier) / 100);
bitmap = BarcodesRenderer.DrawBitmapEAN_UPC(
BarcodesTestData.encodedTestDataEAN_8,
BarcodesTestData.inputTestStringEAN_8,
type, heightToCut, true, scaleMultiplier, null, null, hasQuiteZones, rotation);
if (!hasQuiteZones)
{
widthShould = widthShould - (EANData.left_quite_zone_count_EAN_8 + EANData.right_quite_zone_count) * scaleMultiplier;
}
if (rotate90)
{
bitmap.Width.Should().Be(heightShould);
bitmap.Height.Should().Be(widthShould);
}
else
{
bitmap.Width.Should().Be(widthShould);
bitmap.Height.Should().Be(heightShould);
}
break;
case BarcodeType.UPC_A:
widthShould = EANData.default_barcode_width_EAN_13 * scaleMultiplier;
heightShould = BarcodesUtils.GetBarcodeHeightInt(widthShould, type);
heightShould = heightShould - (int)(heightShould * BarcodesUtils.GetPercentToCut(heightShould, heightToCut, scaleMultiplier) / 100);
bitmap = BarcodesRenderer.DrawBitmapEAN_UPC(
BarcodesTestData.encodedTestDataUPC_A,
BarcodesTestData.inputTestStringUPC_A,
type, heightToCut, true, scaleMultiplier, null, null, hasQuiteZones, rotation);
if (!hasQuiteZones)
{
widthShould = widthShould - (EANData.left_quite_zone_count_EAN_13 + EANData.right_quite_zone_count) * scaleMultiplier;
}
if (rotate90)
{
bitmap.Width.Should().Be(heightShould);
bitmap.Height.Should().Be(widthShould);
}
else
{
bitmap.Width.Should().Be(widthShould);
bitmap.Height.Should().Be(heightShould);
}
break;
}
Assert.True(true, caseName);
}
/// <summary>
/// Draws a EAN/UPC barcode on bitmap from the encoded data depending on the barcode type and returns bitmap.
/// </summary>
/// <param name="encodedData">The encoded data.</param>
/// <param name="barcodeType">The barcode type.</param>
/// <param name="strokeColor">The color of barcode lines.</param>
/// <param name="backColor">The background color.</param>
/// <param name="showDataLabel">Defines whether to print the barcode data under the lines.</param>
/// <param name="textDataString">The text to be printed under the barcode lines.</param>
/// <param name="heightToCut">The height in pixels or in percent to be cut from the top of the barcode lines. Can be 0.</param>
/// <param name="scaleMultiplier">The multiplier of the barcode width for better text rendering.</param>
/// <param name="hasQuietZones">Defines whether the barcode has quiet zones.</param>
/// <param name="barcodeRotation">Defines barcode rotation angle.</param>
/// <returns>Bitmap</returns>
internal static Bitmap DrawBitmapEAN_UPC(byte[] encodedData, string textDataString, BarcodeType barcodeType,
MeasureBarcodeUnit heightToCut, bool showDataLabel, int scaleMultiplier = 2, Color?strokeColor = null, Color?backColor = null,
bool hasQuietZones = true, BarcodeRotation barcodeRotation = BarcodeRotation.Clockwise_0)
{
// Bitmap accepts only integer values:
int barcodeWidth;
int barcodeHeight;
int strokeHeight;
int separatorHeight;
int leftQuiteZoneCount;
int leftCodePartCount;
int shiftFromTop = EANData.shift_from_top * scaleMultiplier;
Font labelFont = new Font(EANData.font_family_name, EANData.default_font_size * scaleMultiplier);
Font labelFontSmall = new Font(EANData.font_family_name, EANData.default_font_small_size * scaleMultiplier);
string textDataLeft;
string textDataRight;
int dotsPerInch = EANData.dots_per_inch;
int halfBarItemWidth = scaleMultiplier / 2;
switch (barcodeType)
{
case BarcodeType.EAN_13:
case BarcodeType.UPC_A:
barcodeWidth = EANData.default_barcode_width_EAN_13 * scaleMultiplier;
barcodeHeight = BarcodesUtils.GetBarcodeHeightInt(EANData.default_barcode_width_EAN_13 * scaleMultiplier, barcodeType);
strokeHeight = BarcodesUtils.GetStrokeHeight(EANData.default_barcode_width_EAN_13 * scaleMultiplier, barcodeType);
separatorHeight = BarcodesUtils.GetSeparatorHeight(EANData.default_barcode_width_EAN_13 * scaleMultiplier, barcodeType);
leftQuiteZoneCount = EANData.left_quite_zone_count_EAN_13;
leftCodePartCount = 42;
textDataLeft = textDataString.Substring(0, 6);
textDataRight = textDataString.Substring(6, 6);
if (barcodeType == BarcodeType.UPC_A)
{
textDataLeft = textDataLeft.Substring(1, 5);
textDataRight = textDataRight.Substring(0, 5);
}
break;
case BarcodeType.EAN_8:
barcodeWidth = EANData.default_barcode_width_EAN_8 * scaleMultiplier;
barcodeHeight = BarcodesUtils.GetBarcodeHeightInt(EANData.default_barcode_width_EAN_8 * scaleMultiplier, barcodeType);
strokeHeight = BarcodesUtils.GetStrokeHeight(EANData.default_barcode_width_EAN_8 * scaleMultiplier, barcodeType);
separatorHeight = BarcodesUtils.GetSeparatorHeight(EANData.default_barcode_width_EAN_8 * scaleMultiplier, barcodeType);
leftQuiteZoneCount = EANData.left_quite_zone_count_EAN_8;
leftCodePartCount = 28;
textDataLeft = textDataString.Substring(0, 4);
textDataRight = textDataString.Substring(4, 4);
break;
default:
throw new System.NotImplementedException("BarcodeType is not supported");
}
int leftSeparatorCount = 3;
int middleSeparatorCount = 5;
int rightQuiteZoneCount = EANData.right_quite_zone_count;
if (!hasQuietZones)
{
barcodeWidth = barcodeWidth - (leftQuiteZoneCount + rightQuiteZoneCount) * scaleMultiplier;
leftQuiteZoneCount = 0;
rightQuiteZoneCount = 0;
}
// Calculate the percent the user wants to cut from the top depending on height:
float percentToCut = BarcodesUtils.GetPercentToCut(barcodeHeight, heightToCut, scaleMultiplier);
int cut = (int)(barcodeHeight * percentToCut / 100);
strokeHeight = Math.Max(strokeHeight - cut, 0);
separatorHeight = Math.Max(separatorHeight - cut, 0);
barcodeHeight = barcodeHeight - cut;
Bitmap bitmap;
bitmap = new Bitmap(barcodeWidth, barcodeHeight);
bitmap.SetResolution(dotsPerInch, dotsPerInch);
using (var graphics = Graphics.FromImage(bitmap))
{
void DrawStrokeLine(int pos, bool isSeparator = false)
{
graphics.DrawLine(new Pen(strokeColor ?? Color.Black, scaleMultiplier),
new PointF(pos * scaleMultiplier + halfBarItemWidth, shiftFromTop),
new PointF(pos * scaleMultiplier + halfBarItemWidth, shiftFromTop + (isSeparator ? separatorHeight : strokeHeight)));
}
void DrawSpaceLine(int pos, bool isSeparator = false)
{
graphics.DrawLine(new Pen(backColor ?? Color.White, scaleMultiplier),
new PointF(pos * scaleMultiplier + halfBarItemWidth, shiftFromTop),
new PointF(pos * scaleMultiplier + halfBarItemWidth, shiftFromTop + (isSeparator ? separatorHeight : strokeHeight)));
}
// Paint the background:
graphics.Clear(backColor ?? Color.White);
int x = 0;
// Left quite zone:
while (x < leftQuiteZoneCount)
{
DrawSpaceLine(x++);
}
// Left separator:
DrawStrokeLine(x++, true);
DrawSpaceLine(x++, true);
DrawStrokeLine(x++, true);
// Left part of the barcode:
while (x - leftQuiteZoneCount - leftSeparatorCount < leftCodePartCount)
{
// First digit of UPC must be longer than the others:
bool isFirstDigit = (x - leftQuiteZoneCount - leftSeparatorCount >= 0) && (x - leftQuiteZoneCount - leftSeparatorCount <= 6);
if (encodedData[x - leftQuiteZoneCount - leftSeparatorCount] == 1)
{
DrawStrokeLine(x, (barcodeType == BarcodeType.UPC_A) && isFirstDigit);
}
else
{
DrawSpaceLine(x, (barcodeType == BarcodeType.UPC_A) && isFirstDigit);
}
x++;
}
// Middle separator:
DrawSpaceLine(x++, true);
DrawStrokeLine(x++, true);
DrawSpaceLine(x++, true);
DrawStrokeLine(x++, true);
DrawSpaceLine(x++, true);
// Right part of the barcode:
while (x - leftQuiteZoneCount - leftSeparatorCount - middleSeparatorCount < leftCodePartCount * 2)
{
// Last digit of UPC must be longer than the others:
bool isLastDigit = (x - leftQuiteZoneCount - leftSeparatorCount - middleSeparatorCount >= 77) && (x - leftQuiteZoneCount - leftSeparatorCount - middleSeparatorCount <= 83);
if (encodedData[x - leftQuiteZoneCount - leftSeparatorCount - middleSeparatorCount] == 1)
{
DrawStrokeLine(x, (barcodeType == BarcodeType.UPC_A) && isLastDigit);
}
else
{
DrawSpaceLine(x, (barcodeType == BarcodeType.UPC_A) && isLastDigit);
}
x++;
}
// Right separator:
DrawStrokeLine(x++, true);
DrawSpaceLine(x++, true);
DrawStrokeLine(x++, true);
// Right quite zone:
for (int i = 0; i < rightQuiteZoneCount; i++)
{
DrawSpaceLine(x++);
}
if (showDataLabel)
{
var digitsPath = new GraphicsPath();
var digitsBrush = new SolidBrush(strokeColor ?? Color.Black);
int oneDigitShift = 0;
if (barcodeType == BarcodeType.UPC_A)
{
oneDigitShift = 7;
}
graphics.SmoothingMode = SmoothingMode.AntiAlias;
float textPosY = barcodeHeight - 1 - labelFont.Size;
digitsPath.AddString(textDataLeft, labelFont.FontFamily, (int)labelFont.Style, labelFont.Size,
new RectangleF(
(leftQuiteZoneCount + leftSeparatorCount + oneDigitShift + 3) * scaleMultiplier,
textPosY,
(leftCodePartCount + 7) * scaleMultiplier,
labelFont.Height
),
StringFormat.GenericTypographic);
digitsPath.AddString(textDataRight, labelFont.FontFamily, (int)labelFont.Style, labelFont.Size,
new RectangleF(
(leftQuiteZoneCount + leftSeparatorCount + 2 + leftCodePartCount + middleSeparatorCount) * scaleMultiplier,
textPosY,
(leftCodePartCount + 7) * scaleMultiplier,
labelFont.Height
),
StringFormat.GenericTypographic);
// Print the first digit for EAN-13:
if ((barcodeType == BarcodeType.EAN_13) && hasQuietZones)
{
digitsPath.AddString(textDataString.Substring(0, 1), labelFont.FontFamily, (int)labelFont.Style, labelFont.Size,
new RectangleF(
1 * scaleMultiplier,
textPosY,
(leftCodePartCount + 7) * scaleMultiplier,
labelFont.Height
),
StringFormat.GenericTypographic);
}
// Print the first and the last digits for UPC-A:
if ((barcodeType == BarcodeType.UPC_A) && hasQuietZones)
{
digitsPath.AddString(textDataString.Substring(0, 1), labelFontSmall.FontFamily, (int)labelFontSmall.Style, labelFontSmall.Size,
new RectangleF(
2 * scaleMultiplier,
(textPosY + labelFont.Size - labelFontSmall.Size),
(7) * scaleMultiplier,
labelFontSmall.Height
),
StringFormat.GenericTypographic);
digitsPath.AddString(textDataRight, labelFontSmall.FontFamily, (int)labelFontSmall.Style, labelFontSmall.Size,
new RectangleF(
(leftQuiteZoneCount + leftSeparatorCount * 2 + 2 + leftCodePartCount * 2 + middleSeparatorCount) * scaleMultiplier,
(textPosY + labelFont.Size - labelFontSmall.Size),
(7) * scaleMultiplier,
labelFontSmall.Height
),
StringFormat.GenericTypographic);
}
graphics.FillPath(digitsBrush, digitsPath);
}
}
switch (barcodeRotation)
{
case BarcodeRotation.Clockwise_90:
bitmap.RotateFlip(RotateFlipType.Rotate90FlipNone);
break;
case BarcodeRotation.Clockwise_180:
bitmap.RotateFlip(RotateFlipType.Rotate180FlipNone);
break;
case BarcodeRotation.Clockwise_270:
bitmap.RotateFlip(RotateFlipType.Rotate270FlipNone);
break;
}
return(bitmap);
}
/// <summary>
/// Draws a GS1-128 barcode on bitmap from the encoded data and returns bitmap.
/// </summary>
/// <param name="encodedData">The encoded data.</param>
/// <param name="textDataString">The text to be printed under the barcode lines.</param>
/// <param name="heightToCut">The height in pixels or in percent to be cut from the top of the barcode lines. Can be 0.</param>
/// <param name="showDataLabel">Defines whether to print the barcode data under the lines.</param>
/// <param name="scaleMultiplier">The multiplier of the barcode width for better text rendering.</param>
/// <param name="backColor">The background color.</param>
/// <param name="hasQuietZones">Defines whether the barcode has quiet zones.</param>
/// <param name="strokeColor">The color of barcode lines.</param>
/// <param name="barcodeRotation">Defines barcode rotation angle.</param>
/// <returns>Bitmap</returns>
internal static Bitmap DrawBitmapGS1_128(byte[] encodedData, string textDataString,
MeasureBarcodeUnit heightToCut, bool showDataLabel = true, int scaleMultiplier = 2,
Color?strokeColor = null, Color?backColor = null, bool hasQuietZones = true,
BarcodeRotation barcodeRotation = BarcodeRotation.Clockwise_0)
{
int halfBarItemWidth = scaleMultiplier / 2;
int quietZoneWidth = GS1_128Data.QuietZoneMinimumWidth * scaleMultiplier;
if (!hasQuietZones)
{
quietZoneWidth = 0;
}
int internalWidth = quietZoneWidth * 2 + encodedData.Length * scaleMultiplier;
// Barcode height is 15% of the width:
int internalHeight = (int)(internalWidth * 0.15f);
// Calculate the percent depending on height:
float percentToCut = BarcodesUtils.GetPercentToCut(internalHeight, heightToCut, scaleMultiplier);
internalHeight = internalHeight - (int)(internalHeight * percentToCut / 100);
Font labelFont = new Font(GS1_128Data.font_family_name, GS1_128Data.default_font_size * scaleMultiplier);
float labelY = 0f, labelHeight = 0f;
float labelWidth = 0f;
if (showDataLabel)
{
labelHeight = scaleMultiplier * 2;
labelY = labelHeight + internalHeight;
labelHeight += labelFont.Size;
using (var temp = new Bitmap(1, 1))
using (var g = Graphics.FromImage(temp))
labelWidth = g.MeasureString(textDataString, labelFont).Width;
}
var bitmap = new Bitmap(internalWidth, internalHeight + (int)labelHeight);
int dotsPerInch = GS1_128Data.dots_per_inch;
bitmap.SetResolution(dotsPerInch, dotsPerInch);
int pos = 0;
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.Clear(backColor ?? Color.White);
Pen backgroundPen = new Pen(backColor ?? Color.White, scaleMultiplier);
Pen strokePen = new Pen(strokeColor ?? Color.Black, scaleMultiplier);
Brush backgroundBrush = new SolidBrush(backColor ?? Color.White);
// 1. Left quiet zone
graphics.FillRectangle(backgroundBrush,
x: 0, y: 0,
width: quietZoneWidth, height: internalHeight);
pos += quietZoneWidth; // quiet zone is 10 * X here
// 2. Stop character
for (int i = 0; i < encodedData.Length; i++)
{
graphics.DrawLine(encodedData[i] == 1 ? strokePen : backgroundPen,
new Point(pos + halfBarItemWidth, 0),
new Point(pos + halfBarItemWidth, internalHeight));
pos += scaleMultiplier;
}
// 3. Right quiet zone
graphics.FillRectangle(backgroundBrush,
x: pos + halfBarItemWidth, y: 0,
width: quietZoneWidth, height: internalHeight);
// 4. Print data string under the barcode
if (showDataLabel)
{
labelY = internalHeight + 1;
graphics.SmoothingMode = SmoothingMode.AntiAlias;
var labelPath = new GraphicsPath();
var labelBrush = new SolidBrush(strokeColor ?? Color.Black);
labelPath.AddString(textDataString, labelFont.FontFamily, (int)labelFont.Style, labelFont.Size,
new RectangleF(x: internalWidth / 2f - labelWidth / 2, y: labelY, labelWidth, labelHeight),
new StringFormat(StringFormat.GenericTypographic)
{
Alignment = StringAlignment.Center
});
graphics.FillPath(labelBrush, labelPath);
}
}
switch (barcodeRotation)
{
case BarcodeRotation.Clockwise_90:
bitmap.RotateFlip(RotateFlipType.Rotate90FlipNone);
break;
case BarcodeRotation.Clockwise_180:
bitmap.RotateFlip(RotateFlipType.Rotate180FlipNone);
break;
case BarcodeRotation.Clockwise_270:
bitmap.RotateFlip(RotateFlipType.Rotate270FlipNone);
break;
}
return(bitmap);
}
