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Normal Topic html in silverlight (Read 4473 times)
xarzu
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html in silverlight
Oct 13th, 2011 at 7:56pm
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I have noticed that I can create an HTML class in a silverlight project.  But how can I make use of it?  I do not think it is possible, for example, to import an html document into a richtextedit class.
  
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Stoyo
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Re: html in silverlight
Reply #1 - Oct 13th, 2011 at 8:07pm
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If you are referring to the HtmlBuilder class, it's used to create image-maps for exported diagram images. This will let you (or your users) show in the browser diagram images with clickable node areas that will open a new page. I'm not sure how useful this will be from a Silvelright application that's already shown in a browser anyway, but we copied it from our other controls after a customer requested it.

I hope that helps,
Stoyan
  
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xarzu
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Re: html in silverlight
Reply #2 - Oct 14th, 2011 at 1:25am
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I see it is part of the
MindFusion.Diagramming.Silverlight Namespace.

Is there a demo to see this in action?
  
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Stoyo
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Re: html in silverlight
Reply #3 - Oct 14th, 2011 at 7:34am
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You can see the a sample page here:
http://mindfusion.eu/_samples/html_test.html

The nodes' Hyperlink property is set to http://silverlight.net and the html was generated with the code below:

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private string imageFile;

private void OnExportImage(object sender, RoutedEventArgs e)
{
	var dlg = new SaveFileDialog { Filter = "image files|*.png" };
	if (dlg.ShowDialog() == true)
	{
		using (var stream = dlg.OpenFile())
			diagram.SaveToPng(stream);
		imageFile = dlg.SafeFileName;
	}
}

private void OnExportHtml(object sender, RoutedEventArgs e)
{
	var dlg = new SaveFileDialog { Filter = "html files|*.html" };
	if (!string.IsNullOrEmpty(imageFile) && dlg.ShowDialog() == true)
	{
		using (var stream = dlg.OpenFile())
		using (var writer = new StreamWriter(stream))
		{
			var htmlBuilder = new HtmlBuilder(diagram);
			var map = htmlBuilder.CreateImageMap("map1");
			var mapRef = htmlBuilder.CreateUseMapAttr("map1");

			string html = "<html><body><img src='{0}' {1}>{2}</body></html>";
			html = string.Format(html, imageFile, mapRef, map);

			writer.Write(html);
		}
	}
}


We have found a bug that created incorrect offset of ShapeNodes, it is fixed in the HtmlBuilder version here:
https://mindfusion.eu/_temp/diaglite_html.zip

I hope that helps,
Stoyan
  
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xarzu
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Re: html in silverlight
Reply #4 - Oct 14th, 2011 at 7:44am
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Stoyo wrote on Oct 14th, 2011 at 7:34am:
You can see the a sample page here:
http://mindfusion.eu/_samples/html_test.html


That is an interesting example this page does not display a html document.  Instead it provides a link to a web site.
http://mindfusion.eu/_samples/html_test.html

This is not what I have in mind.  I thought it would display a small image of the website.

We can include an html web page insice a c# project as these two images show.  So, how do we make use of them?
  
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Re: html in silverlight
Reply #5 - Oct 14th, 2011 at 7:52am
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HtmlBuilder only lets you define areas on exported diagram image that work as hyperlinks. Do you need to display html pages as part of the diagram?
  
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