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tmtton
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background image
May 21st, 2008 at 4:09pm
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I use flowChart.setImage(anImage) to add a JPEG image to the flowchart background.

1) flowChart.clearAll() clears both the diagram and the background. I have to make the setImage call again to restore the background. Can the background image stay in-place on a clear?

2) flowChart.saveTo(filename) does not save the background image. So no background seen after a flowChart.loadFrom(filename). How do I store the background image along with the diagram?
  
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Stoyo
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Re: background image
Reply #1 - May 22nd, 2008 at 7:45am
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1) It can't. For the time being, you will have to save the result of getImage, call clearAll, call setImage again.

2) Try with FlowChart.getSerializationOptions().setBackgroundImage(true);

I hope that helps,
Stoyan
  
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tmtton
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Re: background image
Reply #2 - May 23rd, 2008 at 8:25pm
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When saving the diagram, we like to have a store-background-image as an option. In most cases, we just need to save the diagram. But in a few cases, we want to store the background with the diagram. Does JDiagram 2 support that?
  
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Stoyo
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Re: background image
Reply #3 - May 24th, 2008 at 9:06am
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We have removed the SerializationOptions feature from JDiagram 2, and the BackgroundImage is always saved. You can still achieve what you need by clearing the image temporarily:

Code
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public void saveDiagram(Diagram diagram, String fileName, boolean storeImage)
	throws FileNotFoundException, IOException
{
	if (storeImage)
	{
		// saveTo always saves the image
		diagram.saveTo(fileName);
	}
	else
	{
		// set the image temporarily to null
		Image image = diagram.getBackgroundImage();
		diagram.setBackgroundImage(null);

		diagram.saveTo(fileName);

		diagram.setBackgroundImage(image);
	}
}

public void loadDiagram(Diagram diagram, String fileName, boolean loadImage)
	throws FileNotFoundException, IOException
{
	if (loadImage)
	{
		// load the diagram with whatever image has been stored
		diagram.loadFrom(fileName);
	}
	else
	{
		Image image = diagram.getBackgroundImage();

		// this will also load the image
		diagram.loadFrom(fileName);

		// restore the previous image
		diagram.setBackgroundImage(image);
	}
}


I hope that helps,
Stoyan
  
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