Leadtools.Barcode Namespace > BarcodeWriteOptions Class : ForeColor Property |
[DescriptionAttribute("Foreground (bar) color to use when writing the barcode")] [CategoryAttribute(" Colors")] [DisplayNameAttribute("Fore color")] public RasterColor ForeColor {get; set;}
'Declaration <DescriptionAttribute("Foreground (bar) color to use when writing the barcode")> <CategoryAttribute(" Colors")> <DisplayNameAttribute("Fore color")> Public Property ForeColor As RasterColor
'Usage Dim instance As BarcodeWriteOptions Dim value As RasterColor instance.ForeColor = value value = instance.ForeColor
[DescriptionAttribute("Foreground (bar) color to use when writing the barcode")] [CategoryAttribute(" Colors")] [DisplayNameAttribute("Fore color")] public RasterColor ForeColor {get; set;}
@property (nonatomic, copy) LTRasterColor* foreColor;
public RasterColor getForeColor() public void setForeColor(RasterColor value)
DescriptionAttribute("Foreground (bar) color to use when writing the barcode") CategoryAttribute(" Colors") DisplayNameAttribute("Fore color")
get_ForeColor();
set_ForeColor(value);
Object.defineProperty('ForeColor');
[DescriptionAttribute("Foreground (bar) color to use when writing the barcode")] [CategoryAttribute(" Colors")] [DisplayNameAttribute("Fore color")] public: property RasterColor ForeColor { RasterColor get(); void set ( RasterColor value); }
LEADTOOLS will use ForeColor and BackColor when drawing the new barcode to the image and no special processing is performed. Note that you can specify a transparent color for BackColor to "overlay" the barcode on top of the background of the image. This however, is not recommended.
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.Forms Imports Leadtools.Barcode Imports Leadtools.ImageProcessing Public Sub BarcodeWriteOptions_ColorsExample() Dim imageFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcode.png") Dim engine As New BarcodeEngine() Dim writer As BarcodeWriter = engine.Writer ' We will create a Red over Yellow backround Dim foreColor As RasterColor = RasterColor.FromKnownColor(RasterKnownColor.Red) Dim backColor As RasterColor = RasterColor.FromKnownColor(RasterKnownColor.Yellow) ' Create a UPC-A barcode Dim barcode As BarcodeData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.UPCA) barcode.Bounds = New LogicalRectangle(0, 0, 400, 200, LogicalUnit.Pixel) ' Create a 24 BPP image the same size as the barcode ' The image will have red over yellow colors Dim resolution As Integer = 300 Dim pixels As LeadRect = barcode.Bounds.ToRectangle(resolution, resolution) Using image As RasterImage = RasterImage.Create(pixels.Width, pixels.Height, 24, resolution, backColor) ' Change the barcode colors to be Red over Yellow Dim options As OneDBarcodeWriteOptions = DirectCast(writer.GetDefaultOptions(BarcodeSymbology.UPCA), OneDBarcodeWriteOptions) options.ForeColor = foreColor options.BackColor = backColor ' Write the barcode writer.WriteBarcode(image, barcode, options) ' Save as PNG Using codecs As New RasterCodecs() codecs.Save(image, imageFileName, RasterImageFormat.Png, 24) End Using End Using End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
using Leadtools; using Leadtools.Codecs; using Leadtools.Forms; using Leadtools.Barcode; using Leadtools.ImageProcessing; public void BarcodeWriteOptions_ColorsExample() { string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcode.png"); BarcodeEngine engine = new BarcodeEngine(); BarcodeWriter writer = engine.Writer; // We will create a Red over Yellow backround RasterColor foreColor = RasterColor.FromKnownColor(RasterKnownColor.Red); RasterColor backColor = RasterColor.FromKnownColor(RasterKnownColor.Yellow); // Create a UPC-A barcode BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.UPCA); barcode.Bounds = new LogicalRectangle(0, 0, 400, 200, LogicalUnit.Pixel); // Create a 24 BPP image the same size as the barcode // The image will have red over yellow colors int resolution = 300; LeadRect pixels = barcode.Bounds.ToRectangle(resolution, resolution); using(RasterImage image = RasterImage.Create(pixels.Width, pixels.Height, 24, resolution, backColor)) { // Change the barcode colors to be Red over Yellow OneDBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.UPCA) as OneDBarcodeWriteOptions; options.ForeColor = foreColor; options.BackColor = backColor; // Write the barcode writer.WriteBarcode(image, barcode, options); // Save as PNG using(RasterCodecs codecs = new RasterCodecs()) { codecs.Save(image, imageFileName, RasterImageFormat.Png, 24); } } } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }
using Leadtools; using Leadtools.Codecs; using Leadtools.Barcode; using Leadtools.ImageProcessing; public async Task BarcodeWriteOptions_ColorsExample() { string imageFileName = @"MyBarcode.png"; BarcodeEngine engine = new BarcodeEngine(); BarcodeWriter writer = engine.Writer; // We will create a Red over Yellow backround RasterColor foreColor = RasterColorHelper.FromKnownColor(RasterKnownColor.Red); RasterColor backColor = RasterColorHelper.FromKnownColor(RasterKnownColor.Yellow); // Create a UPC-A barcode BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.UPCA); barcode.Bounds = LeadRectHelper.Create(0, 0, 400, 200); // Create a 24 BPP image the same size as the barcode // The image will have red over yellow colors int resolution = 300; LeadRect pixels = barcode.Bounds; using(RasterImage image = RasterImage.Create(pixels.Width, pixels.Height, 24, resolution, backColor)) { // Change the barcode colors to be Red over Yellow OneDBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.UPCA) as OneDBarcodeWriteOptions; options.ForeColor = foreColor; options.BackColor = backColor; // Write the barcode writer.WriteBarcode(image, barcode, options); // Save as PNG using(RasterCodecs codecs = new RasterCodecs()) { StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(imageFileName); await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Png, 24); } } }
using Leadtools; using Leadtools.Codecs; using Leadtools.Forms; using Leadtools.Barcode; using Leadtools.ImageProcessing; using Leadtools.Examples; public void BarcodeWriteOptions_ColorsExample(Stream outStream) { BarcodeEngine engine = new BarcodeEngine(); BarcodeWriter writer = engine.Writer; // We will create a Red over Yellow backround RasterColor foreColor = RasterColor.FromKnownColor(RasterKnownColor.Red); RasterColor backColor = RasterColor.FromKnownColor(RasterKnownColor.Yellow); // Create a UPC-A barcode BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.UPCA); barcode.Bounds = new LogicalRectangle(0, 0, 400, 200, LogicalUnit.Pixel); // Create a 24 BPP image the same size as the barcode // The image will have red over yellow colors int resolution = 300; LeadRect pixels = barcode.Bounds.ToRectangle(resolution, resolution); using(RasterImage image = RasterImage.Create(pixels.Width, pixels.Height, 24, resolution, backColor)) { // Change the barcode colors to be Red over Yellow OneDBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.UPCA) as OneDBarcodeWriteOptions; options.ForeColor = foreColor; options.BackColor = backColor; // Write the barcode writer.WriteBarcode(image, barcode, options); // Save as PNG RasterCodecs codecs = new RasterCodecs(); codecs.Save(image, outStream, RasterImageFormat.Png, 24); } }
Imports Leadtools Imports Leadtools.Codecs Imports Leadtools.Forms Imports Leadtools.Barcode Imports Leadtools.ImageProcessing Public Sub BarcodeWriteOptions_ColorsExample(ByVal outStream As Stream) Dim engine As BarcodeEngine = New BarcodeEngine() Dim writer As BarcodeWriter = engine.Writer ' We will create a Red over Yellow backround Dim foreColor As RasterColor = RasterColor.FromKnownColor(RasterKnownColor.Red) Dim backColor As RasterColor = RasterColor.FromKnownColor(RasterKnownColor.Yellow) ' Create a UPC-A barcode Dim barcode As BarcodeData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.UPCA) barcode.Bounds = New LogicalRectangle(0, 0, 400, 200, LogicalUnit.Pixel) ' Create a 24 BPP image the same size as the barcode ' The image will have red over yellow colors Dim resolution As Integer = 300 Dim pixels As LeadRect = barcode.Bounds.ToRectangle(resolution, resolution) Using image As RasterImage = RasterImage.Create(pixels.Width, pixels.Height, 24, resolution, backColor) ' Change the barcode colors to be Red over Yellow Dim options As OneDBarcodeWriteOptions = TryCast(writer.GetDefaultOptions(BarcodeSymbology.UPCA), OneDBarcodeWriteOptions) options.ForeColor = foreColor options.BackColor = backColor ' Write the barcode writer.WriteBarcode(image, barcode, options) ' Save as PNG Dim codecs As RasterCodecs = New RasterCodecs() codecs.Save(image, outStream, RasterImageFormat.Png, 24) End Using End Sub