BackgroundColor Property

Summary

Gets or sets the color used to fill the background of the transformed destination rectangle.

Syntax

Objective-C

C++/CLI

Java

Python

public RasterColor BackgroundColor { get; set; }

@property (nonatomic, copy) LTRasterColor *backgroundColor;

public RasterColor getBackgroundColor() 
public void setBackgroundColor(RasterColor color)

public: 
property RasterColor BackgroundColor { 
   RasterColor get(); 
   void set (    RasterColor ); 
}

BackgroundColor # get and set (SvgRenderOptions)

Property Value

The color used to the fill the background of the transformed destination rectangle. The default value is "white".

Remarks

SVG documents do not have a background color. Use this property to fill the SvgRenderOptions.Bounds (final transformation applied) with a color. Will only be used if UseBackgroundColor is true.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.Forms.DocumentWriters; 
using Leadtools.Svg; 
 
using Leadtools.Document.Writer; 
 
public void SvgDocumentRenderExample() 
{ 
   // Create a form with a picture box 
   Form form = new Form(); 
   PictureBox pictureBox = new PictureBox(); 
   pictureBox.Dock = DockStyle.Fill; 
   form.Controls.Add(pictureBox); 
 
   SvgDocument document = null; 
 
   // Load a page from a document file as SVG 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"); 
   using (var codecs = new RasterCodecs()) 
   { 
      // Set 300 as the default value for loading document files 
      codecs.Options.RasterizeDocument.Load.Resolution = 300; 
 
      document = codecs.LoadSvg(srcFileName, 1, null) as SvgDocument; 
   } 
 
   // Make sure the document is valid for rendering 
   if (!document.IsFlat) 
      document.Flat(null); 
   if (!document.Bounds.IsValid) 
      document.CalculateBounds(false); 
 
   // Optimize it for rendering to increase the speed 
   document.BeginRenderOptimize(); 
   Console.WriteLine("IsRenderOptimized is " + document.IsRenderOptimized); 
 
   // This is our paint code 
   pictureBox.Paint += (sender, e) => 
   { 
      Graphics graphics = e.Graphics; 
 
      // We will fit and center this SVG document in the client area of the picture box 
      Rectangle dstBounds = pictureBox.ClientRectangle; 
      if (dstBounds.Width < 1 || dstBounds.Height < 1) 
         return; 
 
      // Create the transformation matrix 
      LeadMatrix transform = LeadMatrix.Identity; 
      LeadRectD srcBounds = document.Bounds.Bounds; 
 
      // Calculate the zoom so we can fit 
      double zoom = 1.0; 
      if (dstBounds.Width > dstBounds.Height) 
      { 
         zoom = dstBounds.Width / srcBounds.Width; 
         if ((zoom * srcBounds.Height) > dstBounds.Height) 
            zoom = dstBounds.Height / srcBounds.Height; 
      } 
      else 
      { 
         zoom = dstBounds.Height / srcBounds.Height; 
         if ((zoom * srcBounds.Width) > dstBounds.Width) 
            zoom = dstBounds.Width / srcBounds.Width; 
      } 
 
      // We have the zoom factor, set it in the transform 
      transform.Scale(zoom, zoom); 
 
      // Center 
      double xOffset = (dstBounds.Width - (zoom * srcBounds.Width)) / 2.0; 
      double yOffset = (dstBounds.Height - (zoom * srcBounds.Height)) / 2.0; 
      transform.Translate(xOffset, yOffset); 
 
      // Now setup the rendering options 
      SvgRenderOptions options = new SvgRenderOptions(); 
      // Use our transform 
      options.Transform = transform; 
      // clipping (if any) 
      options.ClipBounds = LeadRectD.Create(e.ClipRectangle.X, e.ClipRectangle.Y, e.ClipRectangle.Width, e.ClipRectangle.Height); 
      // Fill the background with a white color 
      options.UseBackgroundColor = true; 
      options.BackgroundColor = RasterColor.FromKnownColor(RasterKnownColor.White); 
      options.Bounds = srcBounds; 
 
      // Create a rendering engine 
      using (var engine = RenderingEngineFactory.Create(graphics)) 
      { 
         // Render the document 
         document.Render(engine, options); 
      } 
   }; 
 
   form.SizeChanged += (sender, e) => pictureBox.Invalidate(); 
 
   form.ShowDialog(); 
 
   document.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.ByteArrayInputStream; 
import java.io.ByteArrayOutputStream; 
import java.io.File; 
import java.io.FileInputStream; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.ObjectInputStream; 
import java.io.ObjectOutputStream; 
import java.io.PrintStream; 
import java.nio.file.FileVisitOption; 
import java.nio.file.Files; 
import java.nio.file.Path; 
import java.nio.file.Paths; 
import java.util.stream.Stream; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.document.writer.*; 
import leadtools.svg.*; 
 
 
public void svgDocumentRenderExample() { 
   // Skipped due to java ui 
}

Requirements

Target Platforms

Reference

SvgRenderOptions Class

SvgRenderOptions Members

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Help Version 23.0.2024.5.23

Leadtools.Svg Assembly

Introduction

Getting Started

Namespaces

Leadtools.Svg Namespace

Assemblies