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Normal Topic SaveToPNG image size (Read 4318 times)
binuvc
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SaveToPNG image size
Jan 31st, 2012 at 3:16pm
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Hi,

The size of the png stream obtained on invoking SaveToPNG is increasing to more than 8 mb and sending the image to serverside is becoming an issue.

Do we have any compressioin routines using which we can reduce the size?

Please advice.

Thanks
BinuVC
  
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Stoyo
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Re: SaveToPNG image size
Reply #1 - Jan 31st, 2012 at 5:46pm
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Hi,

There are no image encoders provided with the Silverlight runtime and there's no built-in compression in DiagramLite. You will have to use a third party library to create compressed images. E.g. the code below creates a jpeg image using the Silverlight ImageTools library from http://imagetools.codeplex.com/:

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private void OnExport(object sender, RoutedEventArgs e)
{
	var bitmap = diagram.CreateImage();
	var image = ImageExtensions.ToImage(bitmap);
	var dlg = new SaveFileDialog();
	dlg.DefaultExt = ".jpg";
	if (dlg.ShowDialog() == true)
	{
		var stream = dlg.OpenFile();
		var encoder = new JpegEncoder();
		encoder.Encode(image, stream);
		stream.Close();
	}
}


I hope that helps,
Stoyan
  
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binuvc
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Re: SaveToPNG image size
Reply #2 - Feb 1st, 2012 at 4:22am
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Thanks !!

BinuVC
  
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