public LeadRectD ClipBounds { get; set; }
The clipping rectangle, in pixel coordinates. The default value is LeadRectD.Empty.
The engine will apply this clipping into Bounds to exclude all or parts of the objects that do not fit. The transformation set in SvgRenderOptions.Transform will not be applied to this rectangle. If this value is an empty Leadtools.LeadRectD or has 0 width and 0 height, then an Empty rectangle will be used to render the entire document and no clipping performed.
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 boxForm 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 SVGstring srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf");using (var codecs = new RasterCodecs()){// Set 300 as the default value for loading document filescodecs.Options.RasterizeDocument.Load.Resolution = 300;document = codecs.LoadSvg(srcFileName, 1, null) as SvgDocument;}// Make sure the document is valid for renderingif (!document.IsFlat)document.Flat(null);if (!document.Bounds.IsValid)document.CalculateBounds(false);// Optimize it for rendering to increase the speeddocument.BeginRenderOptimize();Console.WriteLine("IsRenderOptimized is " + document.IsRenderOptimized);// This is our paint codepictureBox.Paint += (sender, e) =>{Graphics graphics = e.Graphics;// We will fit and center this SVG document in the client area of the picture boxRectangle dstBounds = pictureBox.ClientRectangle;if (dstBounds.Width < 1 || dstBounds.Height < 1)return;// Create the transformation matrixLeadMatrix transform = LeadMatrix.Identity;LeadRectD srcBounds = document.Bounds.Bounds;// Calculate the zoom so we can fitdouble 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 transformtransform.Scale(zoom, zoom);// Centerdouble 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 optionsSvgRenderOptions options = new SvgRenderOptions();// Use our transformoptions.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 coloroptions.UseBackgroundColor = true;options.BackgroundColor = RasterColor.FromKnownColor(RasterKnownColor.White);options.Bounds = srcBounds;// Create a rendering engineusing (var engine = RenderingEngineFactory.Create(graphics)){// Render the documentdocument.Render(engine, options);}};form.SizeChanged += (sender, e) => pictureBox.Invalidate();form.ShowDialog();document.Dispose();}static class LEAD_VARS{public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";}